parser.c

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/*
 * parser.c : an XML 1.0 parser, namespaces and validity support are mostly
 *            implemented on top of the SAX interfaces
 *
 * References:
 *   The XML specification:
 *     http://www.w3.org/TR/REC-xml
 *   Original 1.0 version:
 *     http://www.w3.org/TR/1998/REC-xml-19980210
 *   XML second edition working draft
 *     http://www.w3.org/TR/2000/WD-xml-2e-20000814
 *
 * Okay this is a big file, the parser core is around 7000 lines, then it
 * is followed by the progressive parser top routines, then the various
 * high level APIs to call the parser and a few miscellaneous functions.
 * A number of helper functions and deprecated ones have been moved to
 * parserInternals.c to reduce this file size.
 * As much as possible the functions are associated with their relative
 * production in the XML specification. A few productions defining the
 * different ranges of character are actually implanted either in
 * parserInternals.h or parserInternals.c
 * The DOM tree build is realized from the default SAX callbacks in
 * the module SAX.c.
 * The routines doing the validation checks are in valid.c and called either
 * from the SAX callbacks or as standalone functions using a preparsed
 * document.
 *
 * See Copyright for the status of this software.
 *
 * daniel@veillard.com
 */
 
/* To avoid EBCDIC trouble when parsing on zOS */
#if defined(__MVS__)
#pragma convert("ISO8859-1")
#endif
 
#define IN_LIBXML
#include "libxml.h"
 
#if defined(_WIN32)
#define XML_DIR_SEP '\\'
#else
#define XML_DIR_SEP '/'
#endif
 
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <stdarg.h>
#include <stddef.h>
#include <ctype.h>
#include <stdlib.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>
#include <libxml/tree.h>
#include <libxml/parserInternals.h>
#include <libxml/valid.h>
#include <libxml/entities.h>
#include <libxml/xmlerror.h>
#include <libxml/encoding.h>
#include <libxml/xmlIO.h>
#include <libxml/uri.h>
#include <libxml/SAX2.h>
#ifdef LIBXML_CATALOG_ENABLED
#include <libxml/catalog.h>
#endif
 
#include "private/buf.h"
#include "private/dict.h"
#include "private/entities.h"
#include "private/error.h"
#include "private/html.h"
#include "private/io.h"
#include "private/parser.h"
 
#define NS_INDEX_EMPTY  INT_MAX
#define NS_INDEX_XML    (INT_MAX - 1)
#define URI_HASH_EMPTY  0xD943A04E
#define URI_HASH_XML    0xF0451F02
 
struct _xmlStartTag {
    const xmlChar *prefix;
    const xmlChar *URI;
    int line;
    int nsNr;
};
 
typedef struct {
    void *saxData;
    unsigned prefixHashValue;
    unsigned uriHashValue;
    unsigned elementId;
    int oldIndex;
} xmlParserNsExtra;
 
typedef struct {
    unsigned hashValue;
    int index;
} xmlParserNsBucket;
 
struct _xmlParserNsData {
    xmlParserNsExtra *extra;
 
    unsigned hashSize;
    unsigned hashElems;
    xmlParserNsBucket *hash;
 
    unsigned elementId;
    int defaultNsIndex;
};
 
struct _xmlAttrHashBucket {
    int index;
};
 
static xmlParserCtxtPtr
xmlCreateEntityParserCtxtInternal(xmlSAXHandlerPtr sax, void *userData,
        const xmlChar *URL, const xmlChar *ID, const xmlChar *base,
        xmlParserCtxtPtr pctx);
 
static int
xmlParseElementStart(xmlParserCtxtPtr ctxt);
 
static void
xmlParseElementEnd(xmlParserCtxtPtr ctxt);
 
/************************************************************************
 *                                  *
 *  Arbitrary limits set in the parser. See XML_PARSE_HUGE      *
 *                                  *
 ************************************************************************/
 
#define XML_PARSER_BIG_ENTITY 1000
#define XML_PARSER_LOT_ENTITY 5000
 
/*
 * Constants for protection against abusive entity expansion
 * ("billion laughs").
 */
 
/*
 * A certain amount of entity expansion which is always allowed.
 */
#define XML_PARSER_ALLOWED_EXPANSION 1000000
 
/*
 * Fixed cost for each entity reference. This crudely models processing time
 * as well to protect, for example, against exponential expansion of empty
 * or very short entities.
 */
#define XML_ENT_FIXED_COST 20
 
unsigned int xmlParserMaxDepth = 256;
 
 
 
#define XML_PARSER_BIG_BUFFER_SIZE 300
#define XML_PARSER_BUFFER_SIZE 100
#define SAX_COMPAT_MODE BAD_CAST "SAX compatibility mode document"
 
#define XML_PARSER_CHUNK_SIZE 100
 
const char *const
xmlParserVersion = LIBXML_VERSION_STRING LIBXML_VERSION_EXTRA;
 
/*
 * List of XML prefixed PI allowed by W3C specs
 */
 
static const char* const xmlW3CPIs[] = {
    "xml-stylesheet",
    "xml-model",
    NULL
};
 
 
/* DEPR void xmlParserHandleReference(xmlParserCtxtPtr ctxt); */
static xmlEntityPtr xmlParseStringPEReference(xmlParserCtxtPtr ctxt,
                                              const xmlChar **str);
 
static xmlParserErrors
xmlParseExternalEntityPrivate(xmlDocPtr doc, xmlParserCtxtPtr oldctxt,
                  xmlSAXHandlerPtr sax,
              void *user_data, int depth, const xmlChar *URL,
              const xmlChar *ID, xmlNodePtr *list);
 
static int
xmlCtxtUseOptionsInternal(xmlParserCtxtPtr ctxt, int options);
#ifdef LIBXML_LEGACY_ENABLED
static void
xmlAddEntityReference(xmlEntityPtr ent, xmlNodePtr firstNode,
                      xmlNodePtr lastNode);
#endif /* LIBXML_LEGACY_ENABLED */
 
static xmlParserErrors
xmlParseBalancedChunkMemoryInternal(xmlParserCtxtPtr oldctxt,
              const xmlChar *string, void *user_data, xmlNodePtr *lst);
 
static int
xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity);
 
/************************************************************************
 *                                  *
 *      Some factorized error routines              *
 *                                  *
 ************************************************************************/
 
static void
xmlErrAttributeDup(xmlParserCtxtPtr ctxt, const xmlChar * prefix,
                   const xmlChar * localname)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = XML_ERR_ATTRIBUTE_REDEFINED;
 
    if (prefix == NULL)
        __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
                        XML_ERR_ATTRIBUTE_REDEFINED, XML_ERR_FATAL, NULL, 0,
                        (const char *) localname, NULL, NULL, 0, 0,
                        "Attribute %s redefined\n", localname);
    else
        __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
                        XML_ERR_ATTRIBUTE_REDEFINED, XML_ERR_FATAL, NULL, 0,
                        (const char *) prefix, (const char *) localname,
                        NULL, 0, 0, "Attribute %s:%s redefined\n", prefix,
                        localname);
    if (ctxt != NULL) {
    ctxt->wellFormed = 0;
    if (ctxt->recovery == 0)
        ctxt->disableSAX = 1;
    }
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
               const char *msg)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = error;
    __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error,
                    XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, 0, 0, "%s", msg);
    if (ctxt != NULL) {
    ctxt->wellFormed = 0;
    if (ctxt->recovery == 0)
        ctxt->disableSAX = 1;
    }
}
 
void LIBXML_ATTR_FORMAT(3,0)
xmlWarningMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
              const char *msg, const xmlChar *str1, const xmlChar *str2)
{
    xmlStructuredErrorFunc schannel = NULL;
 
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if ((ctxt != NULL) && (ctxt->sax != NULL) &&
        (ctxt->sax->initialized == XML_SAX2_MAGIC))
        schannel = ctxt->sax->serror;
    if (ctxt != NULL) {
        __xmlRaiseError(schannel,
                    (ctxt->sax) ? ctxt->sax->warning : NULL,
                    ctxt->userData,
                    ctxt, NULL, XML_FROM_PARSER, error,
                    XML_ERR_WARNING, NULL, 0,
            (const char *) str1, (const char *) str2, NULL, 0, 0,
            msg, (const char *) str1, (const char *) str2);
    } else {
        __xmlRaiseError(schannel, NULL, NULL,
                    ctxt, NULL, XML_FROM_PARSER, error,
                    XML_ERR_WARNING, NULL, 0,
            (const char *) str1, (const char *) str2, NULL, 0, 0,
            msg, (const char *) str1, (const char *) str2);
    }
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlValidityError(xmlParserCtxtPtr ctxt, xmlParserErrors error,
              const char *msg, const xmlChar *str1, const xmlChar *str2)
{
    xmlStructuredErrorFunc schannel = NULL;
 
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL) {
    ctxt->errNo = error;
    if ((ctxt->sax != NULL) && (ctxt->sax->initialized == XML_SAX2_MAGIC))
        schannel = ctxt->sax->serror;
    }
    if (ctxt != NULL) {
        __xmlRaiseError(schannel,
                    ctxt->vctxt.error, ctxt->vctxt.userData,
                    ctxt, NULL, XML_FROM_DTD, error,
                    XML_ERR_ERROR, NULL, 0, (const char *) str1,
            (const char *) str2, NULL, 0, 0,
            msg, (const char *) str1, (const char *) str2);
    ctxt->valid = 0;
    } else {
        __xmlRaiseError(schannel, NULL, NULL,
                    ctxt, NULL, XML_FROM_DTD, error,
                    XML_ERR_ERROR, NULL, 0, (const char *) str1,
            (const char *) str2, NULL, 0, 0,
            msg, (const char *) str1, (const char *) str2);
    }
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsgInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
                  const char *msg, int val)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = error;
    __xmlRaiseError(NULL, NULL, NULL,
                    ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
                    NULL, 0, NULL, NULL, NULL, val, 0, msg, val);
    if (ctxt != NULL) {
    ctxt->wellFormed = 0;
    if (ctxt->recovery == 0)
        ctxt->disableSAX = 1;
    }
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsgStrIntStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
                  const char *msg, const xmlChar *str1, int val,
          const xmlChar *str2)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = error;
    __xmlRaiseError(NULL, NULL, NULL,
                    ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
                    NULL, 0, (const char *) str1, (const char *) str2,
            NULL, val, 0, msg, str1, val, str2);
    if (ctxt != NULL) {
    ctxt->wellFormed = 0;
    if (ctxt->recovery == 0)
        ctxt->disableSAX = 1;
    }
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
                  const char *msg, const xmlChar * val)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = error;
    __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL,
                    XML_FROM_PARSER, error, XML_ERR_FATAL,
                    NULL, 0, (const char *) val, NULL, NULL, 0, 0, msg,
                    val);
    if (ctxt != NULL) {
    ctxt->wellFormed = 0;
    if (ctxt->recovery == 0)
        ctxt->disableSAX = 1;
    }
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
                  const char *msg, const xmlChar * val)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = error;
    __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL,
                    XML_FROM_PARSER, error, XML_ERR_ERROR,
                    NULL, 0, (const char *) val, NULL, NULL, 0, 0, msg,
                    val);
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlNsErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
         const char *msg,
         const xmlChar * info1, const xmlChar * info2,
         const xmlChar * info3)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    if (ctxt != NULL)
    ctxt->errNo = error;
    __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_NAMESPACE, error,
                    XML_ERR_ERROR, NULL, 0, (const char *) info1,
                    (const char *) info2, (const char *) info3, 0, 0, msg,
                    info1, info2, info3);
    if (ctxt != NULL)
    ctxt->nsWellFormed = 0;
}
 
static void LIBXML_ATTR_FORMAT(3,0)
xmlNsWarn(xmlParserCtxtPtr ctxt, xmlParserErrors error,
         const char *msg,
         const xmlChar * info1, const xmlChar * info2,
         const xmlChar * info3)
{
    if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
        (ctxt->instate == XML_PARSER_EOF))
    return;
    __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_NAMESPACE, error,
                    XML_ERR_WARNING, NULL, 0, (const char *) info1,
                    (const char *) info2, (const char *) info3, 0, 0, msg,
                    info1, info2, info3);
}
 
static void
xmlSaturatedAdd(unsigned long *dst, unsigned long val) {
    if (val > ULONG_MAX - *dst)
        *dst = ULONG_MAX;
    else
        *dst += val;
}
 
static void
xmlSaturatedAddSizeT(unsigned long *dst, unsigned long val) {
    if (val > ULONG_MAX - *dst)
        *dst = ULONG_MAX;
    else
        *dst += val;
}
 
static int
xmlParserEntityCheck(xmlParserCtxtPtr ctxt, unsigned long extra)
{
    unsigned long consumed;
    xmlParserInputPtr input = ctxt->input;
    xmlEntityPtr entity = input->entity;
 
    /*
     * Compute total consumed bytes so far, including input streams of
     * external entities.
     */
    consumed = input->parentConsumed;
    if ((entity == NULL) ||
        ((entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) &&
         ((entity->flags & XML_ENT_PARSED) == 0))) {
        xmlSaturatedAdd(&consumed, input->consumed);
        xmlSaturatedAddSizeT(&consumed, input->cur - input->base);
    }
    xmlSaturatedAdd(&consumed, ctxt->sizeentities);
 
    /*
     * Add extra cost and some fixed cost.
     */
    xmlSaturatedAdd(&ctxt->sizeentcopy, extra);
    xmlSaturatedAdd(&ctxt->sizeentcopy, XML_ENT_FIXED_COST);
 
    /*
     * It's important to always use saturation arithmetic when tracking
     * entity sizes to make the size checks reliable. If "sizeentcopy"
     * overflows, we have to abort.
     */
    if ((ctxt->sizeentcopy > XML_PARSER_ALLOWED_EXPANSION) &&
        ((ctxt->sizeentcopy >= ULONG_MAX) ||
         (ctxt->sizeentcopy / ctxt->maxAmpl > consumed))) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_LOOP,
                       "Maximum entity amplification factor exceeded, see "
                       "xmlCtxtSetMaxAmplification.\n");
        xmlHaltParser(ctxt);
        return(1);
    }
 
    return(0);
}
 
/************************************************************************
 *                                  *
 *      Library wide options                    *
 *                                  *
 ************************************************************************/
 
int
xmlHasFeature(xmlFeature feature)
{
    switch (feature) {
    case XML_WITH_THREAD:
#ifdef LIBXML_THREAD_ENABLED
        return(1);
#else
        return(0);
#endif
        case XML_WITH_TREE:
#ifdef LIBXML_TREE_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_OUTPUT:
#ifdef LIBXML_OUTPUT_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_PUSH:
#ifdef LIBXML_PUSH_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_READER:
#ifdef LIBXML_READER_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_PATTERN:
#ifdef LIBXML_PATTERN_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_WRITER:
#ifdef LIBXML_WRITER_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_SAX1:
#ifdef LIBXML_SAX1_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_FTP:
#ifdef LIBXML_FTP_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_HTTP:
#ifdef LIBXML_HTTP_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_VALID:
#ifdef LIBXML_VALID_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_HTML:
#ifdef LIBXML_HTML_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_LEGACY:
#ifdef LIBXML_LEGACY_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_C14N:
#ifdef LIBXML_C14N_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_CATALOG:
#ifdef LIBXML_CATALOG_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_XPATH:
#ifdef LIBXML_XPATH_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_XPTR:
#ifdef LIBXML_XPTR_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_XINCLUDE:
#ifdef LIBXML_XINCLUDE_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_ICONV:
#ifdef LIBXML_ICONV_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_ISO8859X:
#ifdef LIBXML_ISO8859X_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_UNICODE:
#ifdef LIBXML_UNICODE_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_REGEXP:
#ifdef LIBXML_REGEXP_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_AUTOMATA:
#ifdef LIBXML_AUTOMATA_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_EXPR:
#ifdef LIBXML_EXPR_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_SCHEMAS:
#ifdef LIBXML_SCHEMAS_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_SCHEMATRON:
#ifdef LIBXML_SCHEMATRON_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_MODULES:
#ifdef LIBXML_MODULES_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_DEBUG:
#ifdef LIBXML_DEBUG_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_DEBUG_MEM:
#ifdef DEBUG_MEMORY_LOCATION
            return(1);
#else
            return(0);
#endif
        case XML_WITH_DEBUG_RUN:
            return(0);
        case XML_WITH_ZLIB:
#ifdef LIBXML_ZLIB_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_LZMA:
#ifdef LIBXML_LZMA_ENABLED
            return(1);
#else
            return(0);
#endif
        case XML_WITH_ICU:
#ifdef LIBXML_ICU_ENABLED
            return(1);
#else
            return(0);
#endif
        default:
        break;
     }
     return(0);
}
 
/************************************************************************
 *                                  *
 *      SAX2 defaulted attributes handling          *
 *                                  *
 ************************************************************************/
 
static void
xmlDetectSAX2(xmlParserCtxtPtr ctxt) {
    xmlSAXHandlerPtr sax;
 
    /* Avoid unused variable warning if features are disabled. */
    (void) sax;
 
    if (ctxt == NULL) return;
    sax = ctxt->sax;
#ifdef LIBXML_SAX1_ENABLED
    /*
     * Only enable SAX2 if there SAX2 element handlers, except when there
     * are no element handlers at all.
     */
    if ((sax) && (sax->initialized == XML_SAX2_MAGIC) &&
        ((sax->startElementNs != NULL) ||
         (sax->endElementNs != NULL) ||
         ((sax->startElement == NULL) && (sax->endElement == NULL))))
        ctxt->sax2 = 1;
#else
    ctxt->sax2 = 1;
#endif /* LIBXML_SAX1_ENABLED */
 
    ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3);
    ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5);
    ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36);
    if ((ctxt->str_xml==NULL) || (ctxt->str_xmlns==NULL) ||
        (ctxt->str_xml_ns == NULL)) {
        xmlErrMemory(ctxt, NULL);
    }
}
 
typedef struct {
    xmlHashedString prefix;
    xmlHashedString name;
    xmlHashedString value;
    const xmlChar *valueEnd;
    int external;
    int expandedSize;
} xmlDefAttr;
 
typedef struct _xmlDefAttrs xmlDefAttrs;
typedef xmlDefAttrs *xmlDefAttrsPtr;
struct _xmlDefAttrs {
    int nbAttrs;    /* number of defaulted attributes on that element */
    int maxAttrs;       /* the size of the array */
#if __STDC_VERSION__ >= 199901L
    /* Using a C99 flexible array member avoids UBSan errors. */
    xmlDefAttr attrs[]; /* array of localname/prefix/values/external */
#else
    xmlDefAttr attrs[1];
#endif
};
 
static xmlChar *
xmlAttrNormalizeSpace(const xmlChar *src, xmlChar *dst)
{
    if ((src == NULL) || (dst == NULL))
        return(NULL);
 
    while (*src == 0x20) src++;
    while (*src != 0) {
    if (*src == 0x20) {
        while (*src == 0x20) src++;
        if (*src != 0)
        *dst++ = 0x20;
    } else {
        *dst++ = *src++;
    }
    }
    *dst = 0;
    if (dst == src)
       return(NULL);
    return(dst);
}
 
static const xmlChar *
xmlAttrNormalizeSpace2(xmlParserCtxtPtr ctxt, xmlChar *src, int *len)
{
    int i;
    int remove_head = 0;
    int need_realloc = 0;
    const xmlChar *cur;
 
    if ((ctxt == NULL) || (src == NULL) || (len == NULL))
        return(NULL);
    i = *len;
    if (i <= 0)
        return(NULL);
 
    cur = src;
    while (*cur == 0x20) {
        cur++;
    remove_head++;
    }
    while (*cur != 0) {
    if (*cur == 0x20) {
        cur++;
        if ((*cur == 0x20) || (*cur == 0)) {
            need_realloc = 1;
        break;
        }
    } else
        cur++;
    }
    if (need_realloc) {
        xmlChar *ret;
 
    ret = xmlStrndup(src + remove_head, i - remove_head + 1);
    if (ret == NULL) {
        xmlErrMemory(ctxt, NULL);
        return(NULL);
    }
    xmlAttrNormalizeSpace(ret, ret);
    *len = strlen((const char *)ret);
        return(ret);
    } else if (remove_head) {
        *len -= remove_head;
        memmove(src, src + remove_head, 1 + *len);
    return(src);
    }
    return(NULL);
}
 
static void
xmlAddDefAttrs(xmlParserCtxtPtr ctxt,
               const xmlChar *fullname,
               const xmlChar *fullattr,
               const xmlChar *value) {
    xmlDefAttrsPtr defaults;
    xmlDefAttr *attr;
    int len, expandedSize;
    xmlHashedString name;
    xmlHashedString prefix;
    xmlHashedString hvalue;
    const xmlChar *localname;
 
    /*
     * Allows to detect attribute redefinitions
     */
    if (ctxt->attsSpecial != NULL) {
        if (xmlHashLookup2(ctxt->attsSpecial, fullname, fullattr) != NULL)
        return;
    }
 
    if (ctxt->attsDefault == NULL) {
        ctxt->attsDefault = xmlHashCreateDict(10, ctxt->dict);
    if (ctxt->attsDefault == NULL)
        goto mem_error;
    }
 
    /*
     * split the element name into prefix:localname , the string found
     * are within the DTD and then not associated to namespace names.
     */
    localname = xmlSplitQName3(fullname, &len);
    if (localname == NULL) {
        name = xmlDictLookupHashed(ctxt->dict, fullname, -1);
    prefix.name = NULL;
    } else {
        name = xmlDictLookupHashed(ctxt->dict, localname, -1);
    prefix = xmlDictLookupHashed(ctxt->dict, fullname, len);
        if (prefix.name == NULL)
            goto mem_error;
    }
    if (name.name == NULL)
        goto mem_error;
 
    /*
     * make sure there is some storage
     */
    defaults = xmlHashLookup2(ctxt->attsDefault, name.name, prefix.name);
    if ((defaults == NULL) ||
        (defaults->nbAttrs >= defaults->maxAttrs)) {
        xmlDefAttrsPtr temp;
        int newSize;
 
        newSize = (defaults != NULL) ? 2 * defaults->maxAttrs : 4;
        temp = xmlRealloc(defaults,
                          sizeof(*defaults) + newSize * sizeof(xmlDefAttr));
    if (temp == NULL)
        goto mem_error;
        if (defaults == NULL)
            temp->nbAttrs = 0;
    temp->maxAttrs = newSize;
        defaults = temp;
    if (xmlHashUpdateEntry2(ctxt->attsDefault, name.name, prefix.name,
                            defaults, NULL) < 0) {
        xmlFree(defaults);
        goto mem_error;
    }
    }
 
    /*
     * Split the attribute name into prefix:localname , the string found
     * are within the DTD and hen not associated to namespace names.
     */
    localname = xmlSplitQName3(fullattr, &len);
    if (localname == NULL) {
        name = xmlDictLookupHashed(ctxt->dict, fullattr, -1);
    prefix.name = NULL;
    } else {
        name = xmlDictLookupHashed(ctxt->dict, localname, -1);
    prefix = xmlDictLookupHashed(ctxt->dict, fullattr, len);
        if (prefix.name == NULL)
            goto mem_error;
    }
    if (name.name == NULL)
        goto mem_error;
 
    /* intern the string and precompute the end */
    len = strlen((const char *) value);
    hvalue = xmlDictLookupHashed(ctxt->dict, value, len);
    if (hvalue.name == NULL)
        goto mem_error;
 
    expandedSize = strlen((const char *) name.name);
    if (prefix.name != NULL)
        expandedSize += strlen((const char *) prefix.name);
    expandedSize += len;
 
    attr = &defaults->attrs[defaults->nbAttrs++];
    attr->name = name;
    attr->prefix = prefix;
    attr->value = hvalue;
    attr->valueEnd = hvalue.name + len;
    attr->external = ctxt->external;
    attr->expandedSize = expandedSize;
 
    return;
 
mem_error:
    xmlErrMemory(ctxt, NULL);
    return;
}
 
static void
xmlAddSpecialAttr(xmlParserCtxtPtr ctxt,
          const xmlChar *fullname,
          const xmlChar *fullattr,
          int type)
{
    if (ctxt->attsSpecial == NULL) {
        ctxt->attsSpecial = xmlHashCreateDict(10, ctxt->dict);
    if (ctxt->attsSpecial == NULL)
        goto mem_error;
    }
 
    if (xmlHashLookup2(ctxt->attsSpecial, fullname, fullattr) != NULL)
        return;
 
    xmlHashAddEntry2(ctxt->attsSpecial, fullname, fullattr,
                     (void *) (ptrdiff_t) type);
    return;
 
mem_error:
    xmlErrMemory(ctxt, NULL);
    return;
}
 
static void
xmlCleanSpecialAttrCallback(void *payload, void *data,
                            const xmlChar *fullname, const xmlChar *fullattr,
                            const xmlChar *unused ATTRIBUTE_UNUSED) {
    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) data;
 
    if (((ptrdiff_t) payload) == XML_ATTRIBUTE_CDATA) {
        xmlHashRemoveEntry2(ctxt->attsSpecial, fullname, fullattr, NULL);
    }
}
 
static void
xmlCleanSpecialAttr(xmlParserCtxtPtr ctxt)
{
    if (ctxt->attsSpecial == NULL)
        return;
 
    xmlHashScanFull(ctxt->attsSpecial, xmlCleanSpecialAttrCallback, ctxt);
 
    if (xmlHashSize(ctxt->attsSpecial) == 0) {
        xmlHashFree(ctxt->attsSpecial, NULL);
        ctxt->attsSpecial = NULL;
    }
    return;
}
 
int
xmlCheckLanguageID(const xmlChar * lang)
{
    const xmlChar *cur = lang, *nxt;
 
    if (cur == NULL)
        return (0);
    if (((cur[0] == 'i') && (cur[1] == '-')) ||
        ((cur[0] == 'I') && (cur[1] == '-')) ||
        ((cur[0] == 'x') && (cur[1] == '-')) ||
        ((cur[0] == 'X') && (cur[1] == '-'))) {
        /*
         * Still allow IANA code and user code which were coming
         * from the previous version of the XML-1.0 specification
         * it's deprecated but we should not fail
         */
        cur += 2;
        while (((cur[0] >= 'A') && (cur[0] <= 'Z')) ||
               ((cur[0] >= 'a') && (cur[0] <= 'z')))
            cur++;
        return(cur[0] == 0);
    }
    nxt = cur;
    while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
           ((nxt[0] >= 'a') && (nxt[0] <= 'z')))
           nxt++;
    if (nxt - cur >= 4) {
        /*
         * Reserved
         */
        if ((nxt - cur > 8) || (nxt[0] != 0))
            return(0);
        return(1);
    }
    if (nxt - cur < 2)
        return(0);
    /* we got an ISO 639 code */
    if (nxt[0] == 0)
        return(1);
    if (nxt[0] != '-')
        return(0);
 
    nxt++;
    cur = nxt;
    /* now we can have extlang or script or region or variant */
    if ((nxt[0] >= '0') && (nxt[0] <= '9'))
        goto region_m49;
 
    while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
           ((nxt[0] >= 'a') && (nxt[0] <= 'z')))
           nxt++;
    if (nxt - cur == 4)
        goto script;
    if (nxt - cur == 2)
        goto region;
    if ((nxt - cur >= 5) && (nxt - cur <= 8))
        goto variant;
    if (nxt - cur != 3)
        return(0);
    /* we parsed an extlang */
    if (nxt[0] == 0)
        return(1);
    if (nxt[0] != '-')
        return(0);
 
    nxt++;
    cur = nxt;
    /* now we can have script or region or variant */
    if ((nxt[0] >= '0') && (nxt[0] <= '9'))
        goto region_m49;
 
    while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
           ((nxt[0] >= 'a') && (nxt[0] <= 'z')))
           nxt++;
    if (nxt - cur == 2)
        goto region;
    if ((nxt - cur >= 5) && (nxt - cur <= 8))
        goto variant;
    if (nxt - cur != 4)
        return(0);
    /* we parsed a script */
script:
    if (nxt[0] == 0)
        return(1);
    if (nxt[0] != '-')
        return(0);
 
    nxt++;
    cur = nxt;
    /* now we can have region or variant */
    if ((nxt[0] >= '0') && (nxt[0] <= '9'))
        goto region_m49;
 
    while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
           ((nxt[0] >= 'a') && (nxt[0] <= 'z')))
           nxt++;
 
    if ((nxt - cur >= 5) && (nxt - cur <= 8))
        goto variant;
    if (nxt - cur != 2)
        return(0);
    /* we parsed a region */
region:
    if (nxt[0] == 0)
        return(1);
    if (nxt[0] != '-')
        return(0);
 
    nxt++;
    cur = nxt;
    /* now we can just have a variant */
    while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
           ((nxt[0] >= 'a') && (nxt[0] <= 'z')))
           nxt++;
 
    if ((nxt - cur < 5) || (nxt - cur > 8))
        return(0);
 
    /* we parsed a variant */
variant:
    if (nxt[0] == 0)
        return(1);
    if (nxt[0] != '-')
        return(0);
    /* extensions and private use subtags not checked */
    return (1);
 
region_m49:
    if (((nxt[1] >= '0') && (nxt[1] <= '9')) &&
        ((nxt[2] >= '0') && (nxt[2] <= '9'))) {
        nxt += 3;
        goto region;
    }
    return(0);
}
 
/************************************************************************
 *                                  *
 *      Parser stacks related functions and macros      *
 *                                  *
 ************************************************************************/
 
static xmlEntityPtr xmlParseStringEntityRef(xmlParserCtxtPtr ctxt,
                                            const xmlChar ** str);
 
xmlParserNsData *
xmlParserNsCreate(void) {
    xmlParserNsData *nsdb = xmlMalloc(sizeof(*nsdb));
 
    if (nsdb == NULL)
        return(NULL);
    memset(nsdb, 0, sizeof(*nsdb));
    nsdb->defaultNsIndex = INT_MAX;
 
    return(nsdb);
}
 
void
xmlParserNsFree(xmlParserNsData *nsdb) {
    if (nsdb == NULL)
        return;
 
    xmlFree(nsdb->extra);
    xmlFree(nsdb->hash);
    xmlFree(nsdb);
}
 
static void
xmlParserNsReset(xmlParserNsData *nsdb) {
    if (nsdb == NULL)
        return;
 
    nsdb->hashElems = 0;
    nsdb->elementId = 0;
    nsdb->defaultNsIndex = INT_MAX;
 
    if (nsdb->hash)
        memset(nsdb->hash, 0, nsdb->hashSize * sizeof(nsdb->hash[0]));
}
 
static int
xmlParserNsStartElement(xmlParserNsData *nsdb) {
    if (nsdb->elementId == UINT_MAX)
        return(-1);
    nsdb->elementId++;
 
    return(0);
}
 
static int
xmlParserNsLookup(xmlParserCtxtPtr ctxt, const xmlHashedString *prefix,
                  xmlParserNsBucket **bucketPtr) {
    xmlParserNsBucket *bucket, *tombstone;
    unsigned index, hashValue;
 
    if (prefix->name == NULL)
        return(ctxt->nsdb->defaultNsIndex);
 
    if (ctxt->nsdb->hashSize == 0)
        return(INT_MAX);
 
    hashValue = prefix->hashValue;
    index = hashValue & (ctxt->nsdb->hashSize - 1);
    bucket = &ctxt->nsdb->hash[index];
    tombstone = NULL;
 
    while (bucket->hashValue) {
        if (bucket->index == INT_MAX) {
            if (tombstone == NULL)
                tombstone = bucket;
        } else if (bucket->hashValue == hashValue) {
            if (ctxt->nsTab[bucket->index * 2] == prefix->name) {
                if (bucketPtr != NULL)
                    *bucketPtr = bucket;
                return(bucket->index);
            }
        }
 
        index++;
        bucket++;
        if (index == ctxt->nsdb->hashSize) {
            index = 0;
            bucket = ctxt->nsdb->hash;
        }
    }
 
    if (bucketPtr != NULL)
        *bucketPtr = tombstone ? tombstone : bucket;
    return(INT_MAX);
}
 
static const xmlChar *
xmlParserNsLookupUri(xmlParserCtxtPtr ctxt, const xmlHashedString *prefix) {
    const xmlChar *ret;
    int nsIndex;
 
    if (prefix->name == ctxt->str_xml)
        return(ctxt->str_xml_ns);
 
    nsIndex = xmlParserNsLookup(ctxt, prefix, NULL);
    if (nsIndex == INT_MAX)
        return(NULL);
 
    ret = ctxt->nsTab[nsIndex * 2 + 1];
    if (ret[0] == 0)
        ret = NULL;
    return(ret);
}
 
void *
xmlParserNsLookupSax(xmlParserCtxtPtr ctxt, const xmlChar *prefix) {
    xmlHashedString hprefix;
    int nsIndex;
 
    if (prefix == ctxt->str_xml)
        return(NULL);
 
    hprefix.name = prefix;
    if (prefix != NULL)
        hprefix.hashValue = xmlDictComputeHash(ctxt->dict, prefix);
    else
        hprefix.hashValue = 0;
    nsIndex = xmlParserNsLookup(ctxt, &hprefix, NULL);
    if (nsIndex == INT_MAX)
        return(NULL);
 
    return(ctxt->nsdb->extra[nsIndex].saxData);
}
 
int
xmlParserNsUpdateSax(xmlParserCtxtPtr ctxt, const xmlChar *prefix,
                     void *saxData) {
    xmlHashedString hprefix;
    int nsIndex;
 
    if (prefix == ctxt->str_xml)
        return(-1);
 
    hprefix.name = prefix;
    if (prefix != NULL)
        hprefix.hashValue = xmlDictComputeHash(ctxt->dict, prefix);
    else
        hprefix.hashValue = 0;
    nsIndex = xmlParserNsLookup(ctxt, &hprefix, NULL);
    if (nsIndex == INT_MAX)
        return(-1);
 
    ctxt->nsdb->extra[nsIndex].saxData = saxData;
    return(0);
}
 
static int
xmlParserNsGrow(xmlParserCtxtPtr ctxt) {
    const xmlChar **table;
    xmlParserNsExtra *extra;
    int newSize;
 
    if (ctxt->nsMax > INT_MAX / 2)
        goto error;
    newSize = ctxt->nsMax ? ctxt->nsMax * 2 : 16;
 
    table = xmlRealloc(ctxt->nsTab, 2 * newSize * sizeof(table[0]));
    if (table == NULL)
        goto error;
    ctxt->nsTab = table;
 
    extra = xmlRealloc(ctxt->nsdb->extra, newSize * sizeof(extra[0]));
    if (extra == NULL)
        goto error;
    ctxt->nsdb->extra = extra;
 
    ctxt->nsMax = newSize;
    return(0);
 
error:
    xmlErrMemory(ctxt, NULL);
    return(-1);
}
 
static int
xmlParserNsPush(xmlParserCtxtPtr ctxt, const xmlHashedString *prefix,
                const xmlHashedString *uri, void *saxData, int defAttr) {
    xmlParserNsBucket *bucket = NULL;
    xmlParserNsExtra *extra;
    const xmlChar **ns;
    unsigned hashValue, nsIndex, oldIndex;
 
    if ((prefix != NULL) && (prefix->name == ctxt->str_xml))
        return(0);
 
    if ((ctxt->nsNr >= ctxt->nsMax) && (xmlParserNsGrow(ctxt) < 0)) {
        xmlErrMemory(ctxt, NULL);
        return(-1);
    }
 
    /*
     * Default namespace and 'xml' namespace
     */
    if ((prefix == NULL) || (prefix->name == NULL)) {
        oldIndex = ctxt->nsdb->defaultNsIndex;
 
        if (oldIndex != INT_MAX) {
            extra = &ctxt->nsdb->extra[oldIndex];
 
            if (extra->elementId == ctxt->nsdb->elementId) {
                if (defAttr == 0)
                    xmlErrAttributeDup(ctxt, NULL, BAD_CAST "xmlns");
                return(0);
            }
 
            if ((ctxt->options & XML_PARSE_NSCLEAN) &&
                (uri->name == ctxt->nsTab[oldIndex * 2 + 1]))
                return(0);
        }
 
        ctxt->nsdb->defaultNsIndex = ctxt->nsNr;
        goto populate_entry;
    }
 
    /*
     * Hash table lookup
     */
    oldIndex = xmlParserNsLookup(ctxt, prefix, &bucket);
    if (oldIndex != INT_MAX) {
        extra = &ctxt->nsdb->extra[oldIndex];
 
        /*
         * Check for duplicate definitions on the same element.
         */
        if (extra->elementId == ctxt->nsdb->elementId) {
            if (defAttr == 0)
                xmlErrAttributeDup(ctxt, BAD_CAST "xmlns", prefix->name);
            return(0);
        }
 
        if ((ctxt->options & XML_PARSE_NSCLEAN) &&
            (uri->name == ctxt->nsTab[bucket->index * 2 + 1]))
            return(0);
 
        bucket->index = ctxt->nsNr;
        goto populate_entry;
    }
 
    /*
     * Insert new bucket
     */
 
    hashValue = prefix->hashValue;
 
    /*
     * Grow hash table, 50% fill factor
     */
    if (ctxt->nsdb->hashElems + 1 > ctxt->nsdb->hashSize / 2) {
        xmlParserNsBucket *newHash;
        unsigned newSize, i, index;
 
        if (ctxt->nsdb->hashSize > UINT_MAX / 2) {
            xmlErrMemory(ctxt, NULL);
            return(-1);
        }
        newSize = ctxt->nsdb->hashSize ? ctxt->nsdb->hashSize * 2 : 16;
        newHash = xmlMalloc(newSize * sizeof(newHash[0]));
        if (newHash == NULL) {
            xmlErrMemory(ctxt, NULL);
            return(-1);
        }
        memset(newHash, 0, newSize * sizeof(newHash[0]));
 
        for (i = 0; i < ctxt->nsdb->hashSize; i++) {
            unsigned hv = ctxt->nsdb->hash[i].hashValue;
            unsigned newIndex;
 
            if ((hv == 0) || (ctxt->nsdb->hash[i].index == INT_MAX))
                continue;
            newIndex = hv & (newSize - 1);
 
            while (newHash[newIndex].hashValue != 0) {
                newIndex++;
                if (newIndex == newSize)
                    newIndex = 0;
            }
 
            newHash[newIndex] = ctxt->nsdb->hash[i];
        }
 
        xmlFree(ctxt->nsdb->hash);
        ctxt->nsdb->hash = newHash;
        ctxt->nsdb->hashSize = newSize;
 
        /*
         * Relookup
         */
        index = hashValue & (newSize - 1);
 
        while (newHash[index].hashValue != 0) {
            index++;
            if (index == newSize)
                index = 0;
        }
 
        bucket = &newHash[index];
    }
 
    bucket->hashValue = hashValue;
    bucket->index = ctxt->nsNr;
    ctxt->nsdb->hashElems++;
    oldIndex = INT_MAX;
 
populate_entry:
    nsIndex = ctxt->nsNr;
 
    ns = &ctxt->nsTab[nsIndex * 2];
    ns[0] = prefix ? prefix->name : NULL;
    ns[1] = uri->name;
 
    extra = &ctxt->nsdb->extra[nsIndex];
    extra->saxData = saxData;
    extra->prefixHashValue = prefix ? prefix->hashValue : 0;
    extra->uriHashValue = uri->hashValue;
    extra->elementId = ctxt->nsdb->elementId;
    extra->oldIndex = oldIndex;
 
    ctxt->nsNr++;
 
    return(1);
}
 
static int
xmlParserNsPop(xmlParserCtxtPtr ctxt, int nr)
{
    int i;
 
    /* assert(nr <= ctxt->nsNr); */
 
    for (i = ctxt->nsNr - 1; i >= ctxt->nsNr - nr; i--) {
        const xmlChar *prefix = ctxt->nsTab[i * 2];
        xmlParserNsExtra *extra = &ctxt->nsdb->extra[i];
 
        if (prefix == NULL) {
            ctxt->nsdb->defaultNsIndex = extra->oldIndex;
        } else {
            xmlHashedString hprefix;
            xmlParserNsBucket *bucket = NULL;
 
            hprefix.name = prefix;
            hprefix.hashValue = extra->prefixHashValue;
            xmlParserNsLookup(ctxt, &hprefix, &bucket);
            /* assert(bucket && bucket->hashValue); */
            bucket->index = extra->oldIndex;
        }
    }
 
    ctxt->nsNr -= nr;
    return(nr);
}
 
static int
xmlCtxtGrowAttrs(xmlParserCtxtPtr ctxt, int nr) {
    const xmlChar **atts;
    unsigned *attallocs;
    int maxatts;
 
    if (nr + 5 > ctxt->maxatts) {
    maxatts = ctxt->maxatts == 0 ? 55 : (nr + 5) * 2;
    atts = (const xmlChar **) xmlMalloc(
                     maxatts * sizeof(const xmlChar *));
    if (atts == NULL) goto mem_error;
    attallocs = xmlRealloc(ctxt->attallocs,
                               (maxatts / 5) * sizeof(attallocs[0]));
    if (attallocs == NULL) {
            xmlFree(atts);
            goto mem_error;
        }
        if (ctxt->maxatts > 0)
            memcpy(atts, ctxt->atts, ctxt->maxatts * sizeof(const xmlChar *));
        xmlFree(ctxt->atts);
    ctxt->atts = atts;
    ctxt->attallocs = attallocs;
    ctxt->maxatts = maxatts;
    }
    return(ctxt->maxatts);
mem_error:
    xmlErrMemory(ctxt, NULL);
    return(-1);
}
 
int
inputPush(xmlParserCtxtPtr ctxt, xmlParserInputPtr value)
{
    if ((ctxt == NULL) || (value == NULL))
        return(-1);
    if (ctxt->inputNr >= ctxt->inputMax) {
        size_t newSize = ctxt->inputMax * 2;
        xmlParserInputPtr *tmp;
 
        tmp = (xmlParserInputPtr *) xmlRealloc(ctxt->inputTab,
                                               newSize * sizeof(*tmp));
        if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            return (-1);
        }
        ctxt->inputTab = tmp;
        ctxt->inputMax = newSize;
    }
    ctxt->inputTab[ctxt->inputNr] = value;
    ctxt->input = value;
    return (ctxt->inputNr++);
}
xmlParserInputPtr
inputPop(xmlParserCtxtPtr ctxt)
{
    xmlParserInputPtr ret;
 
    if (ctxt == NULL)
        return(NULL);
    if (ctxt->inputNr <= 0)
        return (NULL);
    ctxt->inputNr--;
    if (ctxt->inputNr > 0)
        ctxt->input = ctxt->inputTab[ctxt->inputNr - 1];
    else
        ctxt->input = NULL;
    ret = ctxt->inputTab[ctxt->inputNr];
    ctxt->inputTab[ctxt->inputNr] = NULL;
    return (ret);
}
int
nodePush(xmlParserCtxtPtr ctxt, xmlNodePtr value)
{
    if (ctxt == NULL) return(0);
    if (ctxt->nodeNr >= ctxt->nodeMax) {
        xmlNodePtr *tmp;
 
    tmp = (xmlNodePtr *) xmlRealloc(ctxt->nodeTab,
                                      ctxt->nodeMax * 2 *
                                      sizeof(ctxt->nodeTab[0]));
        if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            return (-1);
        }
        ctxt->nodeTab = tmp;
    ctxt->nodeMax *= 2;
    }
    if ((((unsigned int) ctxt->nodeNr) > xmlParserMaxDepth) &&
        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
    xmlFatalErrMsgInt(ctxt, XML_ERR_INTERNAL_ERROR,
         "Excessive depth in document: %d use XML_PARSE_HUGE option\n",
              xmlParserMaxDepth);
    xmlHaltParser(ctxt);
    return(-1);
    }
    ctxt->nodeTab[ctxt->nodeNr] = value;
    ctxt->node = value;
    return (ctxt->nodeNr++);
}
 
xmlNodePtr
nodePop(xmlParserCtxtPtr ctxt)
{
    xmlNodePtr ret;
 
    if (ctxt == NULL) return(NULL);
    if (ctxt->nodeNr <= 0)
        return (NULL);
    ctxt->nodeNr--;
    if (ctxt->nodeNr > 0)
        ctxt->node = ctxt->nodeTab[ctxt->nodeNr - 1];
    else
        ctxt->node = NULL;
    ret = ctxt->nodeTab[ctxt->nodeNr];
    ctxt->nodeTab[ctxt->nodeNr] = NULL;
    return (ret);
}
 
static int
nameNsPush(xmlParserCtxtPtr ctxt, const xmlChar * value,
           const xmlChar *prefix, const xmlChar *URI, int line, int nsNr)
{
    xmlStartTag *tag;
 
    if (ctxt->nameNr >= ctxt->nameMax) {
        const xmlChar * *tmp;
        xmlStartTag *tmp2;
        ctxt->nameMax *= 2;
        tmp = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab,
                                    ctxt->nameMax *
                                    sizeof(ctxt->nameTab[0]));
        if (tmp == NULL) {
        ctxt->nameMax /= 2;
        goto mem_error;
        }
    ctxt->nameTab = tmp;
        tmp2 = (xmlStartTag *) xmlRealloc((void * *)ctxt->pushTab,
                                    ctxt->nameMax *
                                    sizeof(ctxt->pushTab[0]));
        if (tmp2 == NULL) {
        ctxt->nameMax /= 2;
        goto mem_error;
        }
    ctxt->pushTab = tmp2;
    } else if (ctxt->pushTab == NULL) {
        ctxt->pushTab = (xmlStartTag *) xmlMalloc(ctxt->nameMax *
                                            sizeof(ctxt->pushTab[0]));
        if (ctxt->pushTab == NULL)
            goto mem_error;
    }
    ctxt->nameTab[ctxt->nameNr] = value;
    ctxt->name = value;
    tag = &ctxt->pushTab[ctxt->nameNr];
    tag->prefix = prefix;
    tag->URI = URI;
    tag->line = line;
    tag->nsNr = nsNr;
    return (ctxt->nameNr++);
mem_error:
    xmlErrMemory(ctxt, NULL);
    return (-1);
}
#ifdef LIBXML_PUSH_ENABLED
static const xmlChar *
nameNsPop(xmlParserCtxtPtr ctxt)
{
    const xmlChar *ret;
 
    if (ctxt->nameNr <= 0)
        return (NULL);
    ctxt->nameNr--;
    if (ctxt->nameNr > 0)
        ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
    else
        ctxt->name = NULL;
    ret = ctxt->nameTab[ctxt->nameNr];
    ctxt->nameTab[ctxt->nameNr] = NULL;
    return (ret);
}
#endif /* LIBXML_PUSH_ENABLED */
 
int
namePush(xmlParserCtxtPtr ctxt, const xmlChar * value)
{
    if (ctxt == NULL) return (-1);
 
    if (ctxt->nameNr >= ctxt->nameMax) {
        const xmlChar * *tmp;
        tmp = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab,
                                    ctxt->nameMax * 2 *
                                    sizeof(ctxt->nameTab[0]));
        if (tmp == NULL) {
        goto mem_error;
        }
    ctxt->nameTab = tmp;
        ctxt->nameMax *= 2;
    }
    ctxt->nameTab[ctxt->nameNr] = value;
    ctxt->name = value;
    return (ctxt->nameNr++);
mem_error:
    xmlErrMemory(ctxt, NULL);
    return (-1);
}
 
const xmlChar *
namePop(xmlParserCtxtPtr ctxt)
{
    const xmlChar *ret;
 
    if ((ctxt == NULL) || (ctxt->nameNr <= 0))
        return (NULL);
    ctxt->nameNr--;
    if (ctxt->nameNr > 0)
        ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
    else
        ctxt->name = NULL;
    ret = ctxt->nameTab[ctxt->nameNr];
    ctxt->nameTab[ctxt->nameNr] = NULL;
    return (ret);
}
 
static int spacePush(xmlParserCtxtPtr ctxt, int val) {
    if (ctxt->spaceNr >= ctxt->spaceMax) {
        int *tmp;
 
    ctxt->spaceMax *= 2;
        tmp = (int *) xmlRealloc(ctxt->spaceTab,
                             ctxt->spaceMax * sizeof(ctxt->spaceTab[0]));
        if (tmp == NULL) {
        xmlErrMemory(ctxt, NULL);
        ctxt->spaceMax /=2;
        return(-1);
    }
    ctxt->spaceTab = tmp;
    }
    ctxt->spaceTab[ctxt->spaceNr] = val;
    ctxt->space = &ctxt->spaceTab[ctxt->spaceNr];
    return(ctxt->spaceNr++);
}
 
static int spacePop(xmlParserCtxtPtr ctxt) {
    int ret;
    if (ctxt->spaceNr <= 0) return(0);
    ctxt->spaceNr--;
    if (ctxt->spaceNr > 0)
    ctxt->space = &ctxt->spaceTab[ctxt->spaceNr - 1];
    else
        ctxt->space = &ctxt->spaceTab[0];
    ret = ctxt->spaceTab[ctxt->spaceNr];
    ctxt->spaceTab[ctxt->spaceNr] = -1;
    return(ret);
}
 
/*
 * Macros for accessing the content. Those should be used only by the parser,
 * and not exported.
 *
 * Dirty macros, i.e. one often need to make assumption on the context to
 * use them
 *
 *   CUR_PTR return the current pointer to the xmlChar to be parsed.
 *           To be used with extreme caution since operations consuming
 *           characters may move the input buffer to a different location !
 *   CUR     returns the current xmlChar value, i.e. a 8 bit value if compiled
 *           This should be used internally by the parser
 *           only to compare to ASCII values otherwise it would break when
 *           running with UTF-8 encoding.
 *   RAW     same as CUR but in the input buffer, bypass any token
 *           extraction that may have been done
 *   NXT(n)  returns the n'th next xmlChar. Same as CUR is should be used only
 *           to compare on ASCII based substring.
 *   SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
 *           strings without newlines within the parser.
 *   NEXT1(l) Skip 1 xmlChar, and must also be used only to skip 1 non-newline ASCII
 *           defined char within the parser.
 * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
 *
 *   NEXT    Skip to the next character, this does the proper decoding
 *           in UTF-8 mode. It also pop-up unfinished entities on the fly.
 *   NEXTL(l) Skip the current unicode character of l xmlChars long.
 *   CUR_CHAR(l) returns the current unicode character (int), set l
 *           to the number of xmlChars used for the encoding [0-5].
 *   CUR_SCHAR  same but operate on a string instead of the context
 *   COPY_BUF  copy the current unicode char to the target buffer, increment
 *            the index
 *   GROW, SHRINK  handling of input buffers
 */
 
#define RAW (*ctxt->input->cur)
#define CUR (*ctxt->input->cur)
#define NXT(val) ctxt->input->cur[(val)]
#define CUR_PTR ctxt->input->cur
#define BASE_PTR ctxt->input->base
 
#define CMP4( s, c1, c2, c3, c4 ) \
  ( ((unsigned char *) s)[ 0 ] == c1 && ((unsigned char *) s)[ 1 ] == c2 && \
    ((unsigned char *) s)[ 2 ] == c3 && ((unsigned char *) s)[ 3 ] == c4 )
#define CMP5( s, c1, c2, c3, c4, c5 ) \
  ( CMP4( s, c1, c2, c3, c4 ) && ((unsigned char *) s)[ 4 ] == c5 )
#define CMP6( s, c1, c2, c3, c4, c5, c6 ) \
  ( CMP5( s, c1, c2, c3, c4, c5 ) && ((unsigned char *) s)[ 5 ] == c6 )
#define CMP7( s, c1, c2, c3, c4, c5, c6, c7 ) \
  ( CMP6( s, c1, c2, c3, c4, c5, c6 ) && ((unsigned char *) s)[ 6 ] == c7 )
#define CMP8( s, c1, c2, c3, c4, c5, c6, c7, c8 ) \
  ( CMP7( s, c1, c2, c3, c4, c5, c6, c7 ) && ((unsigned char *) s)[ 7 ] == c8 )
#define CMP9( s, c1, c2, c3, c4, c5, c6, c7, c8, c9 ) \
  ( CMP8( s, c1, c2, c3, c4, c5, c6, c7, c8 ) && \
    ((unsigned char *) s)[ 8 ] == c9 )
#define CMP10( s, c1, c2, c3, c4, c5, c6, c7, c8, c9, c10 ) \
  ( CMP9( s, c1, c2, c3, c4, c5, c6, c7, c8, c9 ) && \
    ((unsigned char *) s)[ 9 ] == c10 )
 
#define SKIP(val) do {                          \
    ctxt->input->cur += (val),ctxt->input->col+=(val);          \
    if (*ctxt->input->cur == 0)                     \
        xmlParserGrow(ctxt);                        \
  } while (0)
 
#define SKIPL(val) do {                         \
    int skipl;                              \
    for(skipl=0; skipl<val; skipl++) {                  \
    if (*(ctxt->input->cur) == '\n') {              \
    ctxt->input->line++; ctxt->input->col = 1;          \
    } else ctxt->input->col++;                  \
    ctxt->input->cur++;                     \
    }                                   \
    if (*ctxt->input->cur == 0)                     \
        xmlParserGrow(ctxt);                        \
  } while (0)
 
/* Don't shrink push parser buffer. */
#define SHRINK \
    if (((ctxt->progressive == 0) || (ctxt->inputNr > 1)) && \
        (ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \
    (ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \
    xmlParserShrink(ctxt);
 
#define GROW if (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK) \
    xmlParserGrow(ctxt);
 
#define SKIP_BLANKS xmlSkipBlankChars(ctxt)
 
#define NEXT xmlNextChar(ctxt)
 
#define NEXT1 {                             \
    ctxt->input->col++;                     \
    ctxt->input->cur++;                     \
    if (*ctxt->input->cur == 0)                 \
        xmlParserGrow(ctxt);                        \
    }
 
#define NEXTL(l) do {                           \
    if (*(ctxt->input->cur) == '\n') {                  \
    ctxt->input->line++; ctxt->input->col = 1;          \
    } else ctxt->input->col++;                      \
    ctxt->input->cur += l;              \
  } while (0)
 
#define CUR_CHAR(l) xmlCurrentChar(ctxt, &l)
#define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l)
 
#define COPY_BUF(b, i, v)                       \
    if (v < 0x80) b[i++] = v;                       \
    else i += xmlCopyCharMultiByte(&b[i],v)
 
int
xmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
    int res = 0;
 
    /*
     * It's Okay to use CUR/NEXT here since all the blanks are on
     * the ASCII range.
     */
    if (((ctxt->inputNr == 1) && (ctxt->instate != XML_PARSER_DTD)) ||
        (ctxt->instate == XML_PARSER_START)) {
    const xmlChar *cur;
    /*
     * if we are in the document content, go really fast
     */
    cur = ctxt->input->cur;
    while (IS_BLANK_CH(*cur)) {
        if (*cur == '\n') {
        ctxt->input->line++; ctxt->input->col = 1;
        } else {
        ctxt->input->col++;
        }
        cur++;
        if (res < INT_MAX)
        res++;
        if (*cur == 0) {
        ctxt->input->cur = cur;
        xmlParserGrow(ctxt);
        cur = ctxt->input->cur;
        }
    }
    ctxt->input->cur = cur;
    } else {
        int expandPE = ((ctxt->external != 0) || (ctxt->inputNr != 1));
 
    while (ctxt->instate != XML_PARSER_EOF) {
            if (IS_BLANK_CH(CUR)) { /* CHECKED tstblanks.xml */
        NEXT;
        } else if (CUR == '%') {
                /*
                 * Need to handle support of entities branching here
                 */
            if ((expandPE == 0) || (IS_BLANK_CH(NXT(1))) || (NXT(1) == 0))
                    break;
            xmlParsePEReference(ctxt);
            } else if (CUR == 0) {
                unsigned long consumed;
                xmlEntityPtr ent;
 
                if (ctxt->inputNr <= 1)
                    break;
 
                consumed = ctxt->input->consumed;
                xmlSaturatedAddSizeT(&consumed,
                                     ctxt->input->cur - ctxt->input->base);
 
                /*
                 * Add to sizeentities when parsing an external entity
                 * for the first time.
                 */
                ent = ctxt->input->entity;
                if ((ent->etype == XML_EXTERNAL_PARAMETER_ENTITY) &&
                    ((ent->flags & XML_ENT_PARSED) == 0)) {
                    ent->flags |= XML_ENT_PARSED;
 
                    xmlSaturatedAdd(&ctxt->sizeentities, consumed);
                }
 
                xmlParserEntityCheck(ctxt, consumed);
 
                xmlPopInput(ctxt);
            } else {
                break;
            }
 
            /*
             * Also increase the counter when entering or exiting a PERef.
             * The spec says: "When a parameter-entity reference is recognized
             * in the DTD and included, its replacement text MUST be enlarged
             * by the attachment of one leading and one following space (#x20)
             * character."
             */
        if (res < INT_MAX)
        res++;
        }
    }
    return(res);
}
 
/************************************************************************
 *                                  *
 *      Commodity functions to handle entities          *
 *                                  *
 ************************************************************************/
 
xmlChar
xmlPopInput(xmlParserCtxtPtr ctxt) {
    xmlParserInputPtr input;
 
    if ((ctxt == NULL) || (ctxt->inputNr <= 1)) return(0);
    if (xmlParserDebugEntities)
    xmlGenericError(xmlGenericErrorContext,
        "Popping input %d\n", ctxt->inputNr);
    if ((ctxt->inputNr > 1) && (ctxt->inSubset == 0) &&
        (ctxt->instate != XML_PARSER_EOF))
        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
                    "Unfinished entity outside the DTD");
    input = inputPop(ctxt);
    if (input->entity != NULL)
        input->entity->flags &= ~XML_ENT_EXPANDING;
    xmlFreeInputStream(input);
    if (*ctxt->input->cur == 0)
        xmlParserGrow(ctxt);
    return(CUR);
}
 
int
xmlPushInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr input) {
    int ret;
    if (input == NULL) return(-1);
 
    if (xmlParserDebugEntities) {
    if ((ctxt->input != NULL) && (ctxt->input->filename))
        xmlGenericError(xmlGenericErrorContext,
            "%s(%d): ", ctxt->input->filename,
            ctxt->input->line);
    xmlGenericError(xmlGenericErrorContext,
        "Pushing input %d : %.30s\n", ctxt->inputNr+1, input->cur);
    }
    if (((ctxt->inputNr > 40) && ((ctxt->options & XML_PARSE_HUGE) == 0)) ||
        (ctxt->inputNr > 100)) {
        xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
        while (ctxt->inputNr > 1)
            xmlFreeInputStream(inputPop(ctxt));
    return(-1);
    }
    ret = inputPush(ctxt, input);
    if (ctxt->instate == XML_PARSER_EOF)
        return(-1);
    GROW;
    return(ret);
}
 
int
xmlParseCharRef(xmlParserCtxtPtr ctxt) {
    int val = 0;
    int count = 0;
 
    /*
     * Using RAW/CUR/NEXT is okay since we are working on ASCII range here
     */
    if ((RAW == '&') && (NXT(1) == '#') &&
        (NXT(2) == 'x')) {
    SKIP(3);
    GROW;
    while (RAW != ';') { /* loop blocked by count */
        if (count++ > 20) {
        count = 0;
        GROW;
                if (ctxt->instate == XML_PARSER_EOF)
                    return(0);
        }
        if ((RAW >= '0') && (RAW <= '9'))
            val = val * 16 + (CUR - '0');
        else if ((RAW >= 'a') && (RAW <= 'f') && (count < 20))
            val = val * 16 + (CUR - 'a') + 10;
        else if ((RAW >= 'A') && (RAW <= 'F') && (count < 20))
            val = val * 16 + (CUR - 'A') + 10;
        else {
        xmlFatalErr(ctxt, XML_ERR_INVALID_HEX_CHARREF, NULL);
        val = 0;
        break;
        }
        if (val > 0x110000)
            val = 0x110000;
 
        NEXT;
        count++;
    }
    if (RAW == ';') {
        /* on purpose to avoid reentrancy problems with NEXT and SKIP */
        ctxt->input->col++;
        ctxt->input->cur++;
    }
    } else if  ((RAW == '&') && (NXT(1) == '#')) {
    SKIP(2);
    GROW;
    while (RAW != ';') { /* loop blocked by count */
        if (count++ > 20) {
        count = 0;
        GROW;
                if (ctxt->instate == XML_PARSER_EOF)
                    return(0);
        }
        if ((RAW >= '0') && (RAW <= '9'))
            val = val * 10 + (CUR - '0');
        else {
        xmlFatalErr(ctxt, XML_ERR_INVALID_DEC_CHARREF, NULL);
        val = 0;
        break;
        }
        if (val > 0x110000)
            val = 0x110000;
 
        NEXT;
        count++;
    }
    if (RAW == ';') {
        /* on purpose to avoid reentrancy problems with NEXT and SKIP */
        ctxt->input->col++;
        ctxt->input->cur++;
    }
    } else {
        if (RAW == '&')
            SKIP(1);
        xmlFatalErr(ctxt, XML_ERR_INVALID_CHARREF, NULL);
    }
 
    /*
     * [ WFC: Legal Character ]
     * Characters referred to using character references must match the
     * production for Char.
     */
    if (val >= 0x110000) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                "xmlParseCharRef: character reference out of bounds\n",
            val);
    } else if (IS_CHAR(val)) {
        return(val);
    } else {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                          "xmlParseCharRef: invalid xmlChar value %d\n",
                      val);
    }
    return(0);
}
 
static int
xmlParseStringCharRef(xmlParserCtxtPtr ctxt, const xmlChar **str) {
    const xmlChar *ptr;
    xmlChar cur;
    int val = 0;
 
    if ((str == NULL) || (*str == NULL)) return(0);
    ptr = *str;
    cur = *ptr;
    if ((cur == '&') && (ptr[1] == '#') && (ptr[2] == 'x')) {
    ptr += 3;
    cur = *ptr;
    while (cur != ';') { /* Non input consuming loop */
        if ((cur >= '0') && (cur <= '9'))
            val = val * 16 + (cur - '0');
        else if ((cur >= 'a') && (cur <= 'f'))
            val = val * 16 + (cur - 'a') + 10;
        else if ((cur >= 'A') && (cur <= 'F'))
            val = val * 16 + (cur - 'A') + 10;
        else {
        xmlFatalErr(ctxt, XML_ERR_INVALID_HEX_CHARREF, NULL);
        val = 0;
        break;
        }
        if (val > 0x110000)
            val = 0x110000;
 
        ptr++;
        cur = *ptr;
    }
    if (cur == ';')
        ptr++;
    } else if  ((cur == '&') && (ptr[1] == '#')){
    ptr += 2;
    cur = *ptr;
    while (cur != ';') { /* Non input consuming loops */
        if ((cur >= '0') && (cur <= '9'))
            val = val * 10 + (cur - '0');
        else {
        xmlFatalErr(ctxt, XML_ERR_INVALID_DEC_CHARREF, NULL);
        val = 0;
        break;
        }
        if (val > 0x110000)
            val = 0x110000;
 
        ptr++;
        cur = *ptr;
    }
    if (cur == ';')
        ptr++;
    } else {
    xmlFatalErr(ctxt, XML_ERR_INVALID_CHARREF, NULL);
    return(0);
    }
    *str = ptr;
 
    /*
     * [ WFC: Legal Character ]
     * Characters referred to using character references must match the
     * production for Char.
     */
    if (val >= 0x110000) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                "xmlParseStringCharRef: character reference out of bounds\n",
                val);
    } else if (IS_CHAR(val)) {
        return(val);
    } else {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
              "xmlParseStringCharRef: invalid xmlChar value %d\n",
              val);
    }
    return(0);
}
 
void
xmlParserHandlePEReference(xmlParserCtxtPtr ctxt) {
    switch(ctxt->instate) {
    case XML_PARSER_CDATA_SECTION:
        return;
        case XML_PARSER_COMMENT:
        return;
    case XML_PARSER_START_TAG:
        return;
    case XML_PARSER_END_TAG:
        return;
        case XML_PARSER_EOF:
        xmlFatalErr(ctxt, XML_ERR_PEREF_AT_EOF, NULL);
        return;
        case XML_PARSER_PROLOG:
    case XML_PARSER_START:
    case XML_PARSER_XML_DECL:
    case XML_PARSER_MISC:
        xmlFatalErr(ctxt, XML_ERR_PEREF_IN_PROLOG, NULL);
        return;
    case XML_PARSER_ENTITY_DECL:
        case XML_PARSER_CONTENT:
        case XML_PARSER_ATTRIBUTE_VALUE:
        case XML_PARSER_PI:
    case XML_PARSER_SYSTEM_LITERAL:
    case XML_PARSER_PUBLIC_LITERAL:
        /* we just ignore it there */
        return;
        case XML_PARSER_EPILOG:
        xmlFatalErr(ctxt, XML_ERR_PEREF_IN_EPILOG, NULL);
        return;
    case XML_PARSER_ENTITY_VALUE:
        /*
         * NOTE: in the case of entity values, we don't do the
         *       substitution here since we need the literal
         *       entity value to be able to save the internal
         *       subset of the document.
         *       This will be handled by xmlStringDecodeEntities
         */
        return;
        case XML_PARSER_DTD:
        /*
         * [WFC: Well-Formedness Constraint: PEs in Internal Subset]
         * In the internal DTD subset, parameter-entity references
         * can occur only where markup declarations can occur, not
         * within markup declarations.
         * In that case this is handled in xmlParseMarkupDecl
         */
        if ((ctxt->external == 0) && (ctxt->inputNr == 1))
        return;
        if (IS_BLANK_CH(NXT(1)) || NXT(1) == 0)
        return;
            break;
        case XML_PARSER_IGNORE:
            return;
    }
 
    xmlParsePEReference(ctxt);
}
 
/*
 * Macro used to grow the current buffer.
 * buffer##_size is expected to be a size_t
 * mem_error: is expected to handle memory allocation failures
 */
#define growBuffer(buffer, n) {                     \
    xmlChar *tmp;                           \
    size_t new_size = buffer##_size * 2 + n;                            \
    if (new_size < buffer##_size) goto mem_error;                       \
    tmp = (xmlChar *) xmlRealloc(buffer, new_size);                     \
    if (tmp == NULL) goto mem_error;                    \
    buffer = tmp;                           \
    buffer##_size = new_size;                                           \
}
 
static xmlChar *
xmlStringDecodeEntitiesInt(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
                   int what, xmlChar end, xmlChar  end2, xmlChar end3,
                           int check) {
    xmlChar *buffer = NULL;
    size_t buffer_size = 0;
    size_t nbchars = 0;
 
    xmlChar *current = NULL;
    xmlChar *rep = NULL;
    const xmlChar *last;
    xmlEntityPtr ent;
    int c,l;
 
    if (str == NULL)
        return(NULL);
    last = str + len;
 
    if (((ctxt->depth > 40) &&
         ((ctxt->options & XML_PARSE_HUGE) == 0)) ||
    (ctxt->depth > 100)) {
    xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_LOOP,
                       "Maximum entity nesting depth exceeded");
    return(NULL);
    }
 
    /*
     * allocate a translation buffer.
     */
    buffer_size = XML_PARSER_BIG_BUFFER_SIZE;
    buffer = (xmlChar *) xmlMallocAtomic(buffer_size);
    if (buffer == NULL) goto mem_error;
 
    /*
     * OK loop until we reach one of the ending char or a size limit.
     * we are operating on already parsed values.
     */
    if (str < last)
    c = CUR_SCHAR(str, l);
    else
        c = 0;
    while ((c != 0) && (c != end) && /* non input consuming loop */
           (c != end2) && (c != end3) &&
           (ctxt->instate != XML_PARSER_EOF)) {
 
    if (c == 0) break;
        if ((c == '&') && (str[1] == '#')) {
        int val = xmlParseStringCharRef(ctxt, &str);
        if (val == 0)
                goto int_error;
        COPY_BUF(buffer, nbchars, val);
        if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) {
            growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
        }
    } else if ((c == '&') && (what & XML_SUBSTITUTE_REF)) {
        if (xmlParserDebugEntities)
        xmlGenericError(xmlGenericErrorContext,
            "String decoding Entity Reference: %.30s\n",
            str);
        ent = xmlParseStringEntityRef(ctxt, &str);
        if ((ent != NULL) &&
        (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
        if (ent->content != NULL) {
            COPY_BUF(buffer, nbchars, ent->content[0]);
            if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) {
            growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
            }
        } else {
            xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
                "predefined entity has no content\n");
                    goto int_error;
        }
        } else if ((ent != NULL) && (ent->content != NULL)) {
            if ((check) && (xmlParserEntityCheck(ctxt, ent->length)))
                    goto int_error;
 
                if (ent->flags & XML_ENT_EXPANDING) {
                xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
                    xmlHaltParser(ctxt);
                    ent->content[0] = 0;
                    goto int_error;
                }
 
                ent->flags |= XML_ENT_EXPANDING;
        ctxt->depth++;
        rep = xmlStringDecodeEntitiesInt(ctxt, ent->content,
                        ent->length, what, 0, 0, 0, check);
        ctxt->depth--;
                ent->flags &= ~XML_ENT_EXPANDING;
 
        if (rep == NULL) {
                    ent->content[0] = 0;
                    goto int_error;
                }
 
                current = rep;
                while (*current != 0) { /* non input consuming loop */
                    buffer[nbchars++] = *current++;
                    if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) {
                        growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
                    }
                }
                xmlFree(rep);
                rep = NULL;
        } else if (ent != NULL) {
        int i = xmlStrlen(ent->name);
        const xmlChar *cur = ent->name;
 
        buffer[nbchars++] = '&';
        if (nbchars + i + XML_PARSER_BUFFER_SIZE > buffer_size) {
            growBuffer(buffer, i + XML_PARSER_BUFFER_SIZE);
        }
        for (;i > 0;i--)
            buffer[nbchars++] = *cur++;
        buffer[nbchars++] = ';';
        }
    } else if (c == '%' && (what & XML_SUBSTITUTE_PEREF)) {
        if (xmlParserDebugEntities)
        xmlGenericError(xmlGenericErrorContext,
            "String decoding PE Reference: %.30s\n", str);
        ent = xmlParseStringPEReference(ctxt, &str);
        if (ent != NULL) {
                if (ent->content == NULL) {
            /*
             * Note: external parsed entities will not be loaded,
             * it is not required for a non-validating parser to
             * complete external PEReferences coming from the
             * internal subset
             */
            if (((ctxt->options & XML_PARSE_NOENT) != 0) ||
            ((ctxt->options & XML_PARSE_DTDVALID) != 0) ||
            (ctxt->validate != 0)) {
            xmlLoadEntityContent(ctxt, ent);
            } else {
            xmlWarningMsg(ctxt, XML_ERR_ENTITY_PROCESSING,
          "not validating will not read content for PE entity %s\n",
                              ent->name, NULL);
            }
        }
 
            if ((check) && (xmlParserEntityCheck(ctxt, ent->length)))
                    goto int_error;
 
                if (ent->flags & XML_ENT_EXPANDING) {
                xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
                    xmlHaltParser(ctxt);
                    if (ent->content != NULL)
                        ent->content[0] = 0;
                    goto int_error;
                }
 
                ent->flags |= XML_ENT_EXPANDING;
        ctxt->depth++;
        rep = xmlStringDecodeEntitiesInt(ctxt, ent->content,
                        ent->length, what, 0, 0, 0, check);
        ctxt->depth--;
                ent->flags &= ~XML_ENT_EXPANDING;
 
        if (rep == NULL) {
                    if (ent->content != NULL)
                        ent->content[0] = 0;
                    goto int_error;
                }
                current = rep;
                while (*current != 0) { /* non input consuming loop */
                    buffer[nbchars++] = *current++;
                    if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) {
                        growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
                    }
                }
                xmlFree(rep);
                rep = NULL;
        }
    } else {
        COPY_BUF(buffer, nbchars, c);
        str += l;
        if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) {
            growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
        }
    }
    if (str < last)
        c = CUR_SCHAR(str, l);
    else
        c = 0;
    }
    buffer[nbchars] = 0;
    return(buffer);
 
mem_error:
    xmlErrMemory(ctxt, NULL);
int_error:
    if (rep != NULL)
        xmlFree(rep);
    if (buffer != NULL)
        xmlFree(buffer);
    return(NULL);
}
 
xmlChar *
xmlStringLenDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
                           int what, xmlChar end, xmlChar  end2,
                           xmlChar end3) {
    if ((ctxt == NULL) || (str == NULL) || (len < 0))
        return(NULL);
    return(xmlStringDecodeEntitiesInt(ctxt, str, len, what,
                                      end, end2, end3, 0));
}
 
xmlChar *
xmlStringDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int what,
                xmlChar end, xmlChar  end2, xmlChar end3) {
    if ((ctxt == NULL) || (str == NULL)) return(NULL);
    return(xmlStringDecodeEntitiesInt(ctxt, str, xmlStrlen(str), what,
                                      end, end2, end3, 0));
}
 
/************************************************************************
 *                                  *
 *      Commodity functions, cleanup needed ?           *
 *                                  *
 ************************************************************************/
 
static int areBlanks(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
                     int blank_chars) {
    int i, ret;
    xmlNodePtr lastChild;
 
    /*
     * Don't spend time trying to differentiate them, the same callback is
     * used !
     */
    if (ctxt->sax->ignorableWhitespace == ctxt->sax->characters)
    return(0);
 
    /*
     * Check for xml:space value.
     */
    if ((ctxt->space == NULL) || (*(ctxt->space) == 1) ||
        (*(ctxt->space) == -2))
    return(0);
 
    /*
     * Check that the string is made of blanks
     */
    if (blank_chars == 0) {
    for (i = 0;i < len;i++)
        if (!(IS_BLANK_CH(str[i]))) return(0);
    }
 
    /*
     * Look if the element is mixed content in the DTD if available
     */
    if (ctxt->node == NULL) return(0);
    if (ctxt->myDoc != NULL) {
    ret = xmlIsMixedElement(ctxt->myDoc, ctxt->node->name);
        if (ret == 0) return(1);
        if (ret == 1) return(0);
    }
 
    /*
     * Otherwise, heuristic :-\
     */
    if ((RAW != '<') && (RAW != 0xD)) return(0);
    if ((ctxt->node->children == NULL) &&
    (RAW == '<') && (NXT(1) == '/')) return(0);
 
    lastChild = xmlGetLastChild(ctxt->node);
    if (lastChild == NULL) {
        if ((ctxt->node->type != XML_ELEMENT_NODE) &&
            (ctxt->node->content != NULL)) return(0);
    } else if (xmlNodeIsText(lastChild))
        return(0);
    else if ((ctxt->node->children != NULL) &&
             (xmlNodeIsText(ctxt->node->children)))
        return(0);
    return(1);
}
 
/************************************************************************
 *                                  *
 *      Extra stuff for namespace support           *
 *  Relates to http://www.w3.org/TR/WD-xml-names            *
 *                                  *
 ************************************************************************/
 
xmlChar *
xmlSplitQName(xmlParserCtxtPtr ctxt, const xmlChar *name, xmlChar **prefix) {
    xmlChar buf[XML_MAX_NAMELEN + 5];
    xmlChar *buffer = NULL;
    int len = 0;
    int max = XML_MAX_NAMELEN;
    xmlChar *ret = NULL;
    const xmlChar *cur = name;
    int c;
 
    if (prefix == NULL) return(NULL);
    *prefix = NULL;
 
    if (cur == NULL) return(NULL);
 
#ifndef XML_XML_NAMESPACE
    /* xml: prefix is not really a namespace */
    if ((cur[0] == 'x') && (cur[1] == 'm') &&
        (cur[2] == 'l') && (cur[3] == ':'))
    return(xmlStrdup(name));
#endif
 
    /* nasty but well=formed */
    if (cur[0] == ':')
    return(xmlStrdup(name));
 
    c = *cur++;
    while ((c != 0) && (c != ':') && (len < max)) { /* tested bigname.xml */
    buf[len++] = c;
    c = *cur++;
    }
    if (len >= max) {
    /*
     * Okay someone managed to make a huge name, so he's ready to pay
     * for the processing speed.
     */
    max = len * 2;
 
    buffer = (xmlChar *) xmlMallocAtomic(max);
    if (buffer == NULL) {
        xmlErrMemory(ctxt, NULL);
        return(NULL);
    }
    memcpy(buffer, buf, len);
    while ((c != 0) && (c != ':')) { /* tested bigname.xml */
        if (len + 10 > max) {
            xmlChar *tmp;
 
        max *= 2;
        tmp = (xmlChar *) xmlRealloc(buffer, max);
        if (tmp == NULL) {
            xmlFree(buffer);
            xmlErrMemory(ctxt, NULL);
            return(NULL);
        }
        buffer = tmp;
        }
        buffer[len++] = c;
        c = *cur++;
    }
    buffer[len] = 0;
    }
 
    if ((c == ':') && (*cur == 0)) {
        if (buffer != NULL)
        xmlFree(buffer);
    *prefix = NULL;
    return(xmlStrdup(name));
    }
 
    if (buffer == NULL)
    ret = xmlStrndup(buf, len);
    else {
    ret = buffer;
    buffer = NULL;
    max = XML_MAX_NAMELEN;
    }
 
 
    if (c == ':') {
    c = *cur;
        *prefix = ret;
    if (c == 0) {
        return(xmlStrndup(BAD_CAST "", 0));
    }
    len = 0;
 
    /*
     * Check that the first character is proper to start
     * a new name
     */
    if (!(((c >= 0x61) && (c <= 0x7A)) ||
          ((c >= 0x41) && (c <= 0x5A)) ||
          (c == '_') || (c == ':'))) {
        int l;
        int first = CUR_SCHAR(cur, l);
 
        if (!IS_LETTER(first) && (first != '_')) {
        xmlFatalErrMsgStr(ctxt, XML_NS_ERR_QNAME,
                "Name %s is not XML Namespace compliant\n",
                  name);
        }
    }
    cur++;
 
    while ((c != 0) && (len < max)) { /* tested bigname2.xml */
        buf[len++] = c;
        c = *cur++;
    }
    if (len >= max) {
        /*
         * Okay someone managed to make a huge name, so he's ready to pay
         * for the processing speed.
         */
        max = len * 2;
 
        buffer = (xmlChar *) xmlMallocAtomic(max);
        if (buffer == NULL) {
            xmlErrMemory(ctxt, NULL);
        return(NULL);
        }
        memcpy(buffer, buf, len);
        while (c != 0) { /* tested bigname2.xml */
        if (len + 10 > max) {
            xmlChar *tmp;
 
            max *= 2;
            tmp = (xmlChar *) xmlRealloc(buffer, max);
            if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            xmlFree(buffer);
            return(NULL);
            }
            buffer = tmp;
        }
        buffer[len++] = c;
        c = *cur++;
        }
        buffer[len] = 0;
    }
 
    if (buffer == NULL)
        ret = xmlStrndup(buf, len);
    else {
        ret = buffer;
    }
    }
 
    return(ret);
}
 
/************************************************************************
 *                                  *
 *          The parser itself               *
 *  Relates to http://www.w3.org/TR/REC-xml             *
 *                                  *
 ************************************************************************/
 
/************************************************************************
 *                                  *
 *  Routines to parse Name, NCName and NmToken          *
 *                                  *
 ************************************************************************/
 
/*
 * The two following functions are related to the change of accepted
 * characters for Name and NmToken in the Revision 5 of XML-1.0
 * They correspond to the modified production [4] and the new production [4a]
 * changes in that revision. Also note that the macros used for the
 * productions Letter, Digit, CombiningChar and Extender are not needed
 * anymore.
 * We still keep compatibility to pre-revision5 parsing semantic if the
 * new XML_PARSE_OLD10 option is given to the parser.
 */
static int
xmlIsNameStartChar(xmlParserCtxtPtr ctxt, int c) {
    if ((ctxt->options & XML_PARSE_OLD10) == 0) {
        /*
     * Use the new checks of production [4] [4a] amd [5] of the
     * Update 5 of XML-1.0
     */
    if ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */
        (((c >= 'a') && (c <= 'z')) ||
         ((c >= 'A') && (c <= 'Z')) ||
         (c == '_') || (c == ':') ||
         ((c >= 0xC0) && (c <= 0xD6)) ||
         ((c >= 0xD8) && (c <= 0xF6)) ||
         ((c >= 0xF8) && (c <= 0x2FF)) ||
         ((c >= 0x370) && (c <= 0x37D)) ||
         ((c >= 0x37F) && (c <= 0x1FFF)) ||
         ((c >= 0x200C) && (c <= 0x200D)) ||
         ((c >= 0x2070) && (c <= 0x218F)) ||
         ((c >= 0x2C00) && (c <= 0x2FEF)) ||
         ((c >= 0x3001) && (c <= 0xD7FF)) ||
         ((c >= 0xF900) && (c <= 0xFDCF)) ||
         ((c >= 0xFDF0) && (c <= 0xFFFD)) ||
         ((c >= 0x10000) && (c <= 0xEFFFF))))
        return(1);
    } else {
        if (IS_LETTER(c) || (c == '_') || (c == ':'))
        return(1);
    }
    return(0);
}
 
static int
xmlIsNameChar(xmlParserCtxtPtr ctxt, int c) {
    if ((ctxt->options & XML_PARSE_OLD10) == 0) {
        /*
     * Use the new checks of production [4] [4a] amd [5] of the
     * Update 5 of XML-1.0
     */
    if ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */
        (((c >= 'a') && (c <= 'z')) ||
         ((c >= 'A') && (c <= 'Z')) ||
         ((c >= '0') && (c <= '9')) || /* !start */
         (c == '_') || (c == ':') ||
         (c == '-') || (c == '.') || (c == 0xB7) || /* !start */
         ((c >= 0xC0) && (c <= 0xD6)) ||
         ((c >= 0xD8) && (c <= 0xF6)) ||
         ((c >= 0xF8) && (c <= 0x2FF)) ||
         ((c >= 0x300) && (c <= 0x36F)) || /* !start */
         ((c >= 0x370) && (c <= 0x37D)) ||
         ((c >= 0x37F) && (c <= 0x1FFF)) ||
         ((c >= 0x200C) && (c <= 0x200D)) ||
         ((c >= 0x203F) && (c <= 0x2040)) || /* !start */
         ((c >= 0x2070) && (c <= 0x218F)) ||
         ((c >= 0x2C00) && (c <= 0x2FEF)) ||
         ((c >= 0x3001) && (c <= 0xD7FF)) ||
         ((c >= 0xF900) && (c <= 0xFDCF)) ||
         ((c >= 0xFDF0) && (c <= 0xFFFD)) ||
         ((c >= 0x10000) && (c <= 0xEFFFF))))
         return(1);
    } else {
        if ((IS_LETTER(c)) || (IS_DIGIT(c)) ||
            (c == '.') || (c == '-') ||
        (c == '_') || (c == ':') ||
        (IS_COMBINING(c)) ||
        (IS_EXTENDER(c)))
        return(1);
    }
    return(0);
}
 
static xmlChar * xmlParseAttValueInternal(xmlParserCtxtPtr ctxt,
                                          int *len, int *alloc, int normalize);
 
static const xmlChar *
xmlParseNameComplex(xmlParserCtxtPtr ctxt) {
    int len = 0, l;
    int c;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
 
    /*
     * Handler for more complex cases
     */
    c = CUR_CHAR(l);
    if ((ctxt->options & XML_PARSE_OLD10) == 0) {
        /*
     * Use the new checks of production [4] [4a] amd [5] of the
     * Update 5 of XML-1.0
     */
    if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
        (!(((c >= 'a') && (c <= 'z')) ||
           ((c >= 'A') && (c <= 'Z')) ||
           (c == '_') || (c == ':') ||
           ((c >= 0xC0) && (c <= 0xD6)) ||
           ((c >= 0xD8) && (c <= 0xF6)) ||
           ((c >= 0xF8) && (c <= 0x2FF)) ||
           ((c >= 0x370) && (c <= 0x37D)) ||
           ((c >= 0x37F) && (c <= 0x1FFF)) ||
           ((c >= 0x200C) && (c <= 0x200D)) ||
           ((c >= 0x2070) && (c <= 0x218F)) ||
           ((c >= 0x2C00) && (c <= 0x2FEF)) ||
           ((c >= 0x3001) && (c <= 0xD7FF)) ||
           ((c >= 0xF900) && (c <= 0xFDCF)) ||
           ((c >= 0xFDF0) && (c <= 0xFFFD)) ||
           ((c >= 0x10000) && (c <= 0xEFFFF))))) {
        return(NULL);
    }
    len += l;
    NEXTL(l);
    c = CUR_CHAR(l);
    while ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */
           (((c >= 'a') && (c <= 'z')) ||
            ((c >= 'A') && (c <= 'Z')) ||
            ((c >= '0') && (c <= '9')) || /* !start */
            (c == '_') || (c == ':') ||
            (c == '-') || (c == '.') || (c == 0xB7) || /* !start */
            ((c >= 0xC0) && (c <= 0xD6)) ||
            ((c >= 0xD8) && (c <= 0xF6)) ||
            ((c >= 0xF8) && (c <= 0x2FF)) ||
            ((c >= 0x300) && (c <= 0x36F)) || /* !start */
            ((c >= 0x370) && (c <= 0x37D)) ||
            ((c >= 0x37F) && (c <= 0x1FFF)) ||
            ((c >= 0x200C) && (c <= 0x200D)) ||
            ((c >= 0x203F) && (c <= 0x2040)) || /* !start */
            ((c >= 0x2070) && (c <= 0x218F)) ||
            ((c >= 0x2C00) && (c <= 0x2FEF)) ||
            ((c >= 0x3001) && (c <= 0xD7FF)) ||
            ((c >= 0xF900) && (c <= 0xFDCF)) ||
            ((c >= 0xFDF0) && (c <= 0xFFFD)) ||
            ((c >= 0x10000) && (c <= 0xEFFFF))
        )) {
            if (len <= INT_MAX - l)
            len += l;
        NEXTL(l);
        c = CUR_CHAR(l);
    }
    } else {
    if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
        (!IS_LETTER(c) && (c != '_') &&
         (c != ':'))) {
        return(NULL);
    }
    len += l;
    NEXTL(l);
    c = CUR_CHAR(l);
 
    while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
           ((IS_LETTER(c)) || (IS_DIGIT(c)) ||
        (c == '.') || (c == '-') ||
        (c == '_') || (c == ':') ||
        (IS_COMBINING(c)) ||
        (IS_EXTENDER(c)))) {
            if (len <= INT_MAX - l)
            len += l;
        NEXTL(l);
        c = CUR_CHAR(l);
    }
    }
    if (ctxt->instate == XML_PARSER_EOF)
        return(NULL);
    if (len > maxLength) {
        xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
        return(NULL);
    }
    if (ctxt->input->cur - ctxt->input->base < len) {
        /*
         * There were a couple of bugs where PERefs lead to to a change
         * of the buffer. Check the buffer size to avoid passing an invalid
         * pointer to xmlDictLookup.
         */
        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
                    "unexpected change of input buffer");
        return (NULL);
    }
    if ((*ctxt->input->cur == '\n') && (ctxt->input->cur[-1] == '\r'))
        return(xmlDictLookup(ctxt->dict, ctxt->input->cur - (len + 1), len));
    return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len));
}
 
const xmlChar *
xmlParseName(xmlParserCtxtPtr ctxt) {
    const xmlChar *in;
    const xmlChar *ret;
    size_t count = 0;
    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                       XML_MAX_TEXT_LENGTH :
                       XML_MAX_NAME_LENGTH;
 
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        return(NULL);
 
    /*
     * Accelerator for simple ASCII names
     */
    in = ctxt->input->cur;
    if (((*in >= 0x61) && (*in <= 0x7A)) ||
    ((*in >= 0x41) && (*in <= 0x5A)) ||
    (*in == '_') || (*in == ':')) {
    in++;
    while (((*in >= 0x61) && (*in <= 0x7A)) ||
           ((*in >= 0x41) && (*in <= 0x5A)) ||
           ((*in >= 0x30) && (*in <= 0x39)) ||
           (*in == '_') || (*in == '-') ||
           (*in == ':') || (*in == '.'))
        in++;
    if ((*in > 0) && (*in < 0x80)) {
        count = in - ctxt->input->cur;
            if (count > maxLength) {
                xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
                return(NULL);
            }
        ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count);
        ctxt->input->cur = in;
        ctxt->input->col += count;
        if (ret == NULL)
            xmlErrMemory(ctxt, NULL);
        return(ret);
    }
    }
    /* accelerator for special cases */
    return(xmlParseNameComplex(ctxt));
}
 
static xmlHashedString
xmlParseNCNameComplex(xmlParserCtxtPtr ctxt) {
    xmlHashedString ret;
    int len = 0, l;
    int c;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
    size_t startPosition = 0;
 
    ret.name = NULL;
    ret.hashValue = 0;
 
    /*
     * Handler for more complex cases
     */
    startPosition = CUR_PTR - BASE_PTR;
    c = CUR_CHAR(l);
    if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
    (!xmlIsNameStartChar(ctxt, c) || (c == ':'))) {
    return(ret);
    }
 
    while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
       (xmlIsNameChar(ctxt, c) && (c != ':'))) {
        if (len <= INT_MAX - l)
        len += l;
    NEXTL(l);
    c = CUR_CHAR(l);
    }
    if (ctxt->instate == XML_PARSER_EOF)
        return(ret);
    if (len > maxLength) {
        xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
        return(ret);
    }
    ret = xmlDictLookupHashed(ctxt->dict, (BASE_PTR + startPosition), len);
    return(ret);
}
 
static xmlHashedString
xmlParseNCName(xmlParserCtxtPtr ctxt) {
    const xmlChar *in, *e;
    xmlHashedString ret;
    size_t count = 0;
    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                       XML_MAX_TEXT_LENGTH :
                       XML_MAX_NAME_LENGTH;
 
    ret.name = NULL;
 
    /*
     * Accelerator for simple ASCII names
     */
    in = ctxt->input->cur;
    e = ctxt->input->end;
    if ((((*in >= 0x61) && (*in <= 0x7A)) ||
     ((*in >= 0x41) && (*in <= 0x5A)) ||
     (*in == '_')) && (in < e)) {
    in++;
    while ((((*in >= 0x61) && (*in <= 0x7A)) ||
            ((*in >= 0x41) && (*in <= 0x5A)) ||
            ((*in >= 0x30) && (*in <= 0x39)) ||
            (*in == '_') || (*in == '-') ||
            (*in == '.')) && (in < e))
        in++;
    if (in >= e)
        goto complex;
    if ((*in > 0) && (*in < 0x80)) {
        count = in - ctxt->input->cur;
            if (count > maxLength) {
                xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
                return(ret);
            }
        ret = xmlDictLookupHashed(ctxt->dict, ctxt->input->cur, count);
        ctxt->input->cur = in;
        ctxt->input->col += count;
        if (ret.name == NULL) {
            xmlErrMemory(ctxt, NULL);
        }
        return(ret);
    }
    }
complex:
    return(xmlParseNCNameComplex(ctxt));
}
 
static const xmlChar *
xmlParseNameAndCompare(xmlParserCtxtPtr ctxt, xmlChar const *other) {
    register const xmlChar *cmp = other;
    register const xmlChar *in;
    const xmlChar *ret;
 
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        return(NULL);
 
    in = ctxt->input->cur;
    while (*in != 0 && *in == *cmp) {
    ++in;
    ++cmp;
    }
    if (*cmp == 0 && (*in == '>' || IS_BLANK_CH (*in))) {
    /* success */
    ctxt->input->col += in - ctxt->input->cur;
    ctxt->input->cur = in;
    return (const xmlChar*) 1;
    }
    /* failure (or end of input buffer), check with full function */
    ret = xmlParseName (ctxt);
    /* strings coming from the dictionary direct compare possible */
    if (ret == other) {
    return (const xmlChar*) 1;
    }
    return ret;
}
 
static xmlChar *
xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) {
    xmlChar buf[XML_MAX_NAMELEN + 5];
    const xmlChar *cur = *str;
    int len = 0, l;
    int c;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
 
    c = CUR_SCHAR(cur, l);
    if (!xmlIsNameStartChar(ctxt, c)) {
    return(NULL);
    }
 
    COPY_BUF(buf, len, c);
    cur += l;
    c = CUR_SCHAR(cur, l);
    while (xmlIsNameChar(ctxt, c)) {
    COPY_BUF(buf, len, c);
    cur += l;
    c = CUR_SCHAR(cur, l);
    if (len >= XML_MAX_NAMELEN) { /* test bigentname.xml */
        /*
         * Okay someone managed to make a huge name, so he's ready to pay
         * for the processing speed.
         */
        xmlChar *buffer;
        int max = len * 2;
 
        buffer = (xmlChar *) xmlMallocAtomic(max);
        if (buffer == NULL) {
            xmlErrMemory(ctxt, NULL);
        return(NULL);
        }
        memcpy(buffer, buf, len);
        while (xmlIsNameChar(ctxt, c)) {
        if (len + 10 > max) {
            xmlChar *tmp;
 
            max *= 2;
            tmp = (xmlChar *) xmlRealloc(buffer, max);
            if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            xmlFree(buffer);
            return(NULL);
            }
            buffer = tmp;
        }
        COPY_BUF(buffer, len, c);
        cur += l;
        c = CUR_SCHAR(cur, l);
                if (len > maxLength) {
                    xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
                    xmlFree(buffer);
                    return(NULL);
                }
        }
        buffer[len] = 0;
        *str = cur;
        return(buffer);
    }
    }
    if (len > maxLength) {
        xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
        return(NULL);
    }
    *str = cur;
    return(xmlStrndup(buf, len));
}
 
xmlChar *
xmlParseNmtoken(xmlParserCtxtPtr ctxt) {
    xmlChar buf[XML_MAX_NAMELEN + 5];
    int len = 0, l;
    int c;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
 
    c = CUR_CHAR(l);
 
    while (xmlIsNameChar(ctxt, c)) {
    COPY_BUF(buf, len, c);
    NEXTL(l);
    c = CUR_CHAR(l);
    if (len >= XML_MAX_NAMELEN) {
        /*
         * Okay someone managed to make a huge token, so he's ready to pay
         * for the processing speed.
         */
        xmlChar *buffer;
        int max = len * 2;
 
        buffer = (xmlChar *) xmlMallocAtomic(max);
        if (buffer == NULL) {
            xmlErrMemory(ctxt, NULL);
        return(NULL);
        }
        memcpy(buffer, buf, len);
        while (xmlIsNameChar(ctxt, c)) {
        if (len + 10 > max) {
            xmlChar *tmp;
 
            max *= 2;
            tmp = (xmlChar *) xmlRealloc(buffer, max);
            if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            xmlFree(buffer);
            return(NULL);
            }
            buffer = tmp;
        }
        COPY_BUF(buffer, len, c);
                if (len > maxLength) {
                    xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
                    xmlFree(buffer);
                    return(NULL);
                }
        NEXTL(l);
        c = CUR_CHAR(l);
        }
        buffer[len] = 0;
            if (ctxt->instate == XML_PARSER_EOF) {
                xmlFree(buffer);
                return(NULL);
            }
        return(buffer);
    }
    }
    if (ctxt->instate == XML_PARSER_EOF)
        return(NULL);
    if (len == 0)
        return(NULL);
    if (len > maxLength) {
        xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
        return(NULL);
    }
    return(xmlStrndup(buf, len));
}
 
xmlChar *
xmlParseEntityValue(xmlParserCtxtPtr ctxt, xmlChar **orig) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = XML_PARSER_BUFFER_SIZE;
    int c, l;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_HUGE_LENGTH :
                    XML_MAX_TEXT_LENGTH;
    xmlChar stop;
    xmlChar *ret = NULL;
    const xmlChar *cur = NULL;
    xmlParserInputPtr input;
 
    if (RAW == '"') stop = '"';
    else if (RAW == '\'') stop = '\'';
    else {
    xmlFatalErr(ctxt, XML_ERR_ENTITY_NOT_STARTED, NULL);
    return(NULL);
    }
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
    xmlErrMemory(ctxt, NULL);
    return(NULL);
    }
 
    /*
     * The content of the entity definition is copied in a buffer.
     */
 
    ctxt->instate = XML_PARSER_ENTITY_VALUE;
    input = ctxt->input;
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        goto error;
    NEXT;
    c = CUR_CHAR(l);
    /*
     * NOTE: 4.4.5 Included in Literal
     * When a parameter entity reference appears in a literal entity
     * value, ... a single or double quote character in the replacement
     * text is always treated as a normal data character and will not
     * terminate the literal.
     * In practice it means we stop the loop only when back at parsing
     * the initial entity and the quote is found
     */
    while (((IS_CHAR(c)) && ((c != stop) || /* checked */
        (ctxt->input != input))) && (ctxt->instate != XML_PARSER_EOF)) {
    if (len + 5 >= size) {
        xmlChar *tmp;
 
        size *= 2;
        tmp = (xmlChar *) xmlRealloc(buf, size);
        if (tmp == NULL) {
        xmlErrMemory(ctxt, NULL);
                goto error;
        }
        buf = tmp;
    }
    COPY_BUF(buf, len, c);
    NEXTL(l);
 
    GROW;
    c = CUR_CHAR(l);
    if (c == 0) {
        GROW;
        c = CUR_CHAR(l);
    }
 
        if (len > maxLength) {
            xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_NOT_FINISHED,
                           "entity value too long\n");
            goto error;
        }
    }
    buf[len] = 0;
    if (ctxt->instate == XML_PARSER_EOF)
        goto error;
    if (c != stop) {
        xmlFatalErr(ctxt, XML_ERR_ENTITY_NOT_FINISHED, NULL);
        goto error;
    }
    NEXT;
 
    /*
     * Raise problem w.r.t. '&' and '%' being used in non-entities
     * reference constructs. Note Charref will be handled in
     * xmlStringDecodeEntities()
     */
    cur = buf;
    while (*cur != 0) { /* non input consuming */
    if ((*cur == '%') || ((*cur == '&') && (cur[1] != '#'))) {
        xmlChar *name;
        xmlChar tmp = *cur;
            int nameOk = 0;
 
        cur++;
        name = xmlParseStringName(ctxt, &cur);
            if (name != NULL) {
                nameOk = 1;
                xmlFree(name);
            }
            if ((nameOk == 0) || (*cur != ';')) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_ENTITY_CHAR_ERROR,
        "EntityValue: '%c' forbidden except for entities references\n",
                              tmp);
                goto error;
        }
        if ((tmp == '%') && (ctxt->inSubset == 1) &&
        (ctxt->inputNr == 1)) {
        xmlFatalErr(ctxt, XML_ERR_ENTITY_PE_INTERNAL, NULL);
                goto error;
        }
        if (*cur == 0)
            break;
    }
    cur++;
    }
 
    /*
     * Then PEReference entities are substituted.
     *
     * NOTE: 4.4.7 Bypassed
     * When a general entity reference appears in the EntityValue in
     * an entity declaration, it is bypassed and left as is.
     * so XML_SUBSTITUTE_REF is not set here.
     */
    ++ctxt->depth;
    ret = xmlStringDecodeEntitiesInt(ctxt, buf, len, XML_SUBSTITUTE_PEREF,
                                     0, 0, 0, /* check */ 1);
    --ctxt->depth;
 
    if (orig != NULL) {
        *orig = buf;
        buf = NULL;
    }
 
error:
    if (buf != NULL)
        xmlFree(buf);
    return(ret);
}
 
static xmlChar *
xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) {
    xmlChar limit = 0;
    xmlChar *buf = NULL;
    xmlChar *rep = NULL;
    size_t len = 0;
    size_t buf_size = 0;
    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                       XML_MAX_HUGE_LENGTH :
                       XML_MAX_TEXT_LENGTH;
    int c, l, in_space = 0;
    xmlChar *current = NULL;
    xmlEntityPtr ent;
 
    if (NXT(0) == '"') {
    ctxt->instate = XML_PARSER_ATTRIBUTE_VALUE;
    limit = '"';
        NEXT;
    } else if (NXT(0) == '\'') {
    limit = '\'';
    ctxt->instate = XML_PARSER_ATTRIBUTE_VALUE;
        NEXT;
    } else {
    xmlFatalErr(ctxt, XML_ERR_ATTRIBUTE_NOT_STARTED, NULL);
    return(NULL);
    }
 
    /*
     * allocate a translation buffer.
     */
    buf_size = XML_PARSER_BUFFER_SIZE;
    buf = (xmlChar *) xmlMallocAtomic(buf_size);
    if (buf == NULL) goto mem_error;
 
    /*
     * OK loop until we reach one of the ending char or a size limit.
     */
    c = CUR_CHAR(l);
    while (((NXT(0) != limit) && /* checked */
            (IS_CHAR(c)) && (c != '<')) &&
            (ctxt->instate != XML_PARSER_EOF)) {
    if (c == '&') {
        in_space = 0;
        if (NXT(1) == '#') {
        int val = xmlParseCharRef(ctxt);
 
        if (val == '&') {
            if (ctxt->replaceEntities) {
            if (len + 10 > buf_size) {
                growBuffer(buf, 10);
            }
            buf[len++] = '&';
            } else {
            /*
             * The reparsing will be done in xmlStringGetNodeList()
             * called by the attribute() function in SAX.c
             */
            if (len + 10 > buf_size) {
                growBuffer(buf, 10);
            }
            buf[len++] = '&';
            buf[len++] = '#';
            buf[len++] = '3';
            buf[len++] = '8';
            buf[len++] = ';';
            }
        } else if (val != 0) {
            if (len + 10 > buf_size) {
            growBuffer(buf, 10);
            }
            len += xmlCopyChar(0, &buf[len], val);
        }
        } else {
        ent = xmlParseEntityRef(ctxt);
        if ((ent != NULL) &&
            (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
            if (len + 10 > buf_size) {
            growBuffer(buf, 10);
            }
            if ((ctxt->replaceEntities == 0) &&
                (ent->content[0] == '&')) {
            buf[len++] = '&';
            buf[len++] = '#';
            buf[len++] = '3';
            buf[len++] = '8';
            buf[len++] = ';';
            } else {
            buf[len++] = ent->content[0];
            }
        } else if ((ent != NULL) &&
                   (ctxt->replaceEntities != 0)) {
            if (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) {
                        if (xmlParserEntityCheck(ctxt, ent->length))
                            goto error;
 
            ++ctxt->depth;
            rep = xmlStringDecodeEntitiesInt(ctxt, ent->content,
                                ent->length, XML_SUBSTITUTE_REF, 0, 0, 0,
                                /* check */ 1);
            --ctxt->depth;
            if (rep != NULL) {
                current = rep;
                while (*current != 0) { /* non input consuming */
                                if ((*current == 0xD) || (*current == 0xA) ||
                                    (*current == 0x9)) {
                                    buf[len++] = 0x20;
                                    current++;
                                } else
                                    buf[len++] = *current++;
                if (len + 10 > buf_size) {
                    growBuffer(buf, 10);
                }
                }
                xmlFree(rep);
                rep = NULL;
            }
            } else {
            if (len + 10 > buf_size) {
                growBuffer(buf, 10);
            }
            if (ent->content != NULL)
                buf[len++] = ent->content[0];
            }
        } else if (ent != NULL) {
            int i = xmlStrlen(ent->name);
            const xmlChar *cur = ent->name;
 
            /*
                     * We also check for recursion and amplification
                     * when entities are not substituted. They're
                     * often expanded later.
             */
            if ((ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) &&
            (ent->content != NULL)) {
                        if ((ent->flags & XML_ENT_CHECKED) == 0) {
                            unsigned long oldCopy = ctxt->sizeentcopy;
 
                            ctxt->sizeentcopy = ent->length;
 
                            ++ctxt->depth;
                            rep = xmlStringDecodeEntitiesInt(ctxt,
                                    ent->content, ent->length,
                                    XML_SUBSTITUTE_REF, 0, 0, 0,
                                    /* check */ 1);
                            --ctxt->depth;
 
                            /*
                             * If we're parsing DTD content, the entity
                             * might reference other entities which
                             * weren't defined yet, so the check isn't
                             * reliable.
                             */
                            if (ctxt->inSubset == 0) {
                                ent->flags |= XML_ENT_CHECKED;
                                ent->expandedSize = ctxt->sizeentcopy;
                            }
 
                            if (rep != NULL) {
                                xmlFree(rep);
                                rep = NULL;
                            } else {
                                ent->content[0] = 0;
                            }
 
                            if (xmlParserEntityCheck(ctxt, oldCopy))
                                goto error;
                        } else {
                            if (xmlParserEntityCheck(ctxt, ent->expandedSize))
                                goto error;
                        }
            }
 
            /*
             * Just output the reference
             */
            buf[len++] = '&';
            while (len + i + 10 > buf_size) {
            growBuffer(buf, i + 10);
            }
            for (;i > 0;i--)
            buf[len++] = *cur++;
            buf[len++] = ';';
        }
        }
    } else {
        if ((c == 0x20) || (c == 0xD) || (c == 0xA) || (c == 0x9)) {
            if ((len != 0) || (!normalize)) {
            if ((!normalize) || (!in_space)) {
            COPY_BUF(buf, len, 0x20);
            while (len + 10 > buf_size) {
                growBuffer(buf, 10);
            }
            }
            in_space = 1;
        }
        } else {
            in_space = 0;
        COPY_BUF(buf, len, c);
        if (len + 10 > buf_size) {
            growBuffer(buf, 10);
        }
        }
        NEXTL(l);
    }
    GROW;
    c = CUR_CHAR(l);
        if (len > maxLength) {
            xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                           "AttValue length too long\n");
            goto mem_error;
        }
    }
    if (ctxt->instate == XML_PARSER_EOF)
        goto error;
 
    if ((in_space) && (normalize)) {
        while ((len > 0) && (buf[len - 1] == 0x20)) len--;
    }
    buf[len] = 0;
    if (RAW == '<') {
    xmlFatalErr(ctxt, XML_ERR_LT_IN_ATTRIBUTE, NULL);
    } else if (RAW != limit) {
    if ((c != 0) && (!IS_CHAR(c))) {
        xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
               "invalid character in attribute value\n");
    } else {
        xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
               "AttValue: ' expected\n");
        }
    } else
    NEXT;
 
    if (attlen != NULL) *attlen = len;
    return(buf);
 
mem_error:
    xmlErrMemory(ctxt, NULL);
error:
    if (buf != NULL)
        xmlFree(buf);
    if (rep != NULL)
        xmlFree(rep);
    return(NULL);
}
 
xmlChar *
xmlParseAttValue(xmlParserCtxtPtr ctxt) {
    if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL);
    return(xmlParseAttValueInternal(ctxt, NULL, NULL, 0));
}
 
xmlChar *
xmlParseSystemLiteral(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = XML_PARSER_BUFFER_SIZE;
    int cur, l;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
    xmlChar stop;
    int state = ctxt->instate;
 
    if (RAW == '"') {
        NEXT;
    stop = '"';
    } else if (RAW == '\'') {
        NEXT;
    stop = '\'';
    } else {
    xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL);
    return(NULL);
    }
 
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
        xmlErrMemory(ctxt, NULL);
    return(NULL);
    }
    ctxt->instate = XML_PARSER_SYSTEM_LITERAL;
    cur = CUR_CHAR(l);
    while ((IS_CHAR(cur)) && (cur != stop)) { /* checked */
    if (len + 5 >= size) {
        xmlChar *tmp;
 
        size *= 2;
        tmp = (xmlChar *) xmlRealloc(buf, size);
        if (tmp == NULL) {
            xmlFree(buf);
        xmlErrMemory(ctxt, NULL);
        ctxt->instate = (xmlParserInputState) state;
        return(NULL);
        }
        buf = tmp;
    }
    COPY_BUF(buf, len, cur);
        if (len > maxLength) {
            xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "SystemLiteral");
            xmlFree(buf);
            ctxt->instate = (xmlParserInputState) state;
            return(NULL);
        }
    NEXTL(l);
    cur = CUR_CHAR(l);
    }
    buf[len] = 0;
    if (ctxt->instate == XML_PARSER_EOF) {
        xmlFree(buf);
        return(NULL);
    }
    ctxt->instate = (xmlParserInputState) state;
    if (!IS_CHAR(cur)) {
    xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL);
    } else {
    NEXT;
    }
    return(buf);
}
 
xmlChar *
xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = XML_PARSER_BUFFER_SIZE;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
    xmlChar cur;
    xmlChar stop;
    xmlParserInputState oldstate = ctxt->instate;
 
    if (RAW == '"') {
        NEXT;
    stop = '"';
    } else if (RAW == '\'') {
        NEXT;
    stop = '\'';
    } else {
    xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL);
    return(NULL);
    }
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
    xmlErrMemory(ctxt, NULL);
    return(NULL);
    }
    ctxt->instate = XML_PARSER_PUBLIC_LITERAL;
    cur = CUR;
    while ((IS_PUBIDCHAR_CH(cur)) && (cur != stop)) { /* checked */
    if (len + 1 >= size) {
        xmlChar *tmp;
 
        size *= 2;
        tmp = (xmlChar *) xmlRealloc(buf, size);
        if (tmp == NULL) {
        xmlErrMemory(ctxt, NULL);
        xmlFree(buf);
        return(NULL);
        }
        buf = tmp;
    }
    buf[len++] = cur;
        if (len > maxLength) {
            xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Public ID");
            xmlFree(buf);
            return(NULL);
        }
    NEXT;
    cur = CUR;
    }
    buf[len] = 0;
    if (ctxt->instate == XML_PARSER_EOF) {
        xmlFree(buf);
        return(NULL);
    }
    if (cur != stop) {
    xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL);
    } else {
    NEXTL(1);
    }
    ctxt->instate = oldstate;
    return(buf);
}
 
static void xmlParseCharDataComplex(xmlParserCtxtPtr ctxt, int partial);
 
/*
 * used for the test in the inner loop of the char data testing
 */
static const unsigned char test_char_data[256] = {
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x9, CR/LF separated */
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x00, 0x27, /* & */
    0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
    0x38, 0x39, 0x3A, 0x3B, 0x00, 0x3D, 0x3E, 0x3F, /* < */
    0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
    0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
    0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
    0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x00, 0x5E, 0x5F, /* ] */
    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
    0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
    0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* non-ascii */
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
 
static void
xmlParseCharDataInternal(xmlParserCtxtPtr ctxt, int partial) {
    const xmlChar *in;
    int nbchar = 0;
    int line = ctxt->input->line;
    int col = ctxt->input->col;
    int ccol;
 
    GROW;
    /*
     * Accelerated common case where input don't need to be
     * modified before passing it to the handler.
     */
    in = ctxt->input->cur;
    do {
get_more_space:
        while (*in == 0x20) { in++; ctxt->input->col++; }
        if (*in == 0xA) {
            do {
                ctxt->input->line++; ctxt->input->col = 1;
                in++;
            } while (*in == 0xA);
            goto get_more_space;
        }
        if (*in == '<') {
            nbchar = in - ctxt->input->cur;
            if (nbchar > 0) {
                const xmlChar *tmp = ctxt->input->cur;
                ctxt->input->cur = in;
 
                if ((ctxt->sax != NULL) &&
                    (ctxt->disableSAX == 0) &&
                    (ctxt->sax->ignorableWhitespace !=
                     ctxt->sax->characters)) {
                    if (areBlanks(ctxt, tmp, nbchar, 1)) {
                        if (ctxt->sax->ignorableWhitespace != NULL)
                            ctxt->sax->ignorableWhitespace(ctxt->userData,
                                                   tmp, nbchar);
                    } else {
                        if (ctxt->sax->characters != NULL)
                            ctxt->sax->characters(ctxt->userData,
                                                  tmp, nbchar);
                        if (*ctxt->space == -1)
                            *ctxt->space = -2;
                    }
                } else if ((ctxt->sax != NULL) &&
                           (ctxt->disableSAX == 0) &&
                           (ctxt->sax->characters != NULL)) {
                    ctxt->sax->characters(ctxt->userData,
                                          tmp, nbchar);
                }
            }
            return;
        }
 
get_more:
        ccol = ctxt->input->col;
        while (test_char_data[*in]) {
            in++;
            ccol++;
        }
        ctxt->input->col = ccol;
        if (*in == 0xA) {
            do {
                ctxt->input->line++; ctxt->input->col = 1;
                in++;
            } while (*in == 0xA);
            goto get_more;
        }
        if (*in == ']') {
            if ((in[1] == ']') && (in[2] == '>')) {
                xmlFatalErr(ctxt, XML_ERR_MISPLACED_CDATA_END, NULL);
                if (ctxt->instate != XML_PARSER_EOF)
                    ctxt->input->cur = in + 1;
                return;
            }
            in++;
            ctxt->input->col++;
            goto get_more;
        }
        nbchar = in - ctxt->input->cur;
        if (nbchar > 0) {
            if ((ctxt->sax != NULL) &&
                (ctxt->disableSAX == 0) &&
                (ctxt->sax->ignorableWhitespace !=
                 ctxt->sax->characters) &&
                (IS_BLANK_CH(*ctxt->input->cur))) {
                const xmlChar *tmp = ctxt->input->cur;
                ctxt->input->cur = in;
 
                if (areBlanks(ctxt, tmp, nbchar, 0)) {
                    if (ctxt->sax->ignorableWhitespace != NULL)
                        ctxt->sax->ignorableWhitespace(ctxt->userData,
                                                       tmp, nbchar);
                } else {
                    if (ctxt->sax->characters != NULL)
                        ctxt->sax->characters(ctxt->userData,
                                              tmp, nbchar);
                    if (*ctxt->space == -1)
                        *ctxt->space = -2;
                }
                line = ctxt->input->line;
                col = ctxt->input->col;
            } else if ((ctxt->sax != NULL) &&
                       (ctxt->disableSAX == 0)) {
                if (ctxt->sax->characters != NULL)
                    ctxt->sax->characters(ctxt->userData,
                                          ctxt->input->cur, nbchar);
                line = ctxt->input->line;
                col = ctxt->input->col;
            }
            if (ctxt->instate == XML_PARSER_EOF)
                return;
        }
        ctxt->input->cur = in;
        if (*in == 0xD) {
            in++;
            if (*in == 0xA) {
                ctxt->input->cur = in;
                in++;
                ctxt->input->line++; ctxt->input->col = 1;
                continue; /* while */
            }
            in--;
        }
        if (*in == '<') {
            return;
        }
        if (*in == '&') {
            return;
        }
        SHRINK;
        GROW;
        if (ctxt->instate == XML_PARSER_EOF)
            return;
        in = ctxt->input->cur;
    } while (((*in >= 0x20) && (*in <= 0x7F)) ||
             (*in == 0x09) || (*in == 0x0a));
    ctxt->input->line = line;
    ctxt->input->col = col;
    xmlParseCharDataComplex(ctxt, partial);
}
 
static void
xmlParseCharDataComplex(xmlParserCtxtPtr ctxt, int partial) {
    xmlChar buf[XML_PARSER_BIG_BUFFER_SIZE + 5];
    int nbchar = 0;
    int cur, l;
 
    cur = CUR_CHAR(l);
    while ((cur != '<') && /* checked */
           (cur != '&') &&
       (IS_CHAR(cur))) {
    if ((cur == ']') && (NXT(1) == ']') && (NXT(2) == '>')) {
        xmlFatalErr(ctxt, XML_ERR_MISPLACED_CDATA_END, NULL);
    }
    COPY_BUF(buf, nbchar, cur);
    /* move current position before possible calling of ctxt->sax->characters */
    NEXTL(l);
    if (nbchar >= XML_PARSER_BIG_BUFFER_SIZE) {
        buf[nbchar] = 0;
 
        /*
         * OK the segment is to be consumed as chars.
         */
        if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
        if (areBlanks(ctxt, buf, nbchar, 0)) {
            if (ctxt->sax->ignorableWhitespace != NULL)
            ctxt->sax->ignorableWhitespace(ctxt->userData,
                                           buf, nbchar);
        } else {
            if (ctxt->sax->characters != NULL)
            ctxt->sax->characters(ctxt->userData, buf, nbchar);
            if ((ctxt->sax->characters !=
                 ctxt->sax->ignorableWhitespace) &&
            (*ctxt->space == -1))
            *ctxt->space = -2;
        }
        }
        nbchar = 0;
            /* something really bad happened in the SAX callback */
            if (ctxt->instate != XML_PARSER_CONTENT)
                return;
            SHRINK;
    }
    cur = CUR_CHAR(l);
    }
    if (ctxt->instate == XML_PARSER_EOF)
        return;
    if (nbchar != 0) {
        buf[nbchar] = 0;
    /*
     * OK the segment is to be consumed as chars.
     */
    if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
        if (areBlanks(ctxt, buf, nbchar, 0)) {
        if (ctxt->sax->ignorableWhitespace != NULL)
            ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar);
        } else {
        if (ctxt->sax->characters != NULL)
            ctxt->sax->characters(ctxt->userData, buf, nbchar);
        if ((ctxt->sax->characters != ctxt->sax->ignorableWhitespace) &&
            (*ctxt->space == -1))
            *ctxt->space = -2;
        }
    }
    }
    /*
     * cur == 0 can mean
     *
     * - XML_PARSER_EOF or memory error. This is checked above.
     * - An actual 0 character.
     * - End of buffer.
     * - An incomplete UTF-8 sequence. This is allowed if partial is set.
     */
    if (ctxt->input->cur < ctxt->input->end) {
        if ((cur == 0) && (CUR != 0)) {
            if (partial == 0) {
                xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                        "Incomplete UTF-8 sequence starting with %02X\n", CUR);
                NEXTL(1);
            }
        } else if ((cur != '<') && (cur != '&')) {
            /* Generate the error and skip the offending character */
            xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                              "PCDATA invalid Char value %d\n", cur);
            NEXTL(l);
        }
    }
}
 
void
xmlParseCharData(xmlParserCtxtPtr ctxt, ATTRIBUTE_UNUSED int cdata) {
    xmlParseCharDataInternal(ctxt, 0);
}
 
xmlChar *
xmlParseExternalID(xmlParserCtxtPtr ctxt, xmlChar **publicID, int strict) {
    xmlChar *URI = NULL;
 
    *publicID = NULL;
    if (CMP6(CUR_PTR, 'S', 'Y', 'S', 'T', 'E', 'M')) {
        SKIP(6);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                       "Space required after 'SYSTEM'\n");
    }
    URI = xmlParseSystemLiteral(ctxt);
    if (URI == NULL) {
        xmlFatalErr(ctxt, XML_ERR_URI_REQUIRED, NULL);
        }
    } else if (CMP6(CUR_PTR, 'P', 'U', 'B', 'L', 'I', 'C')) {
        SKIP(6);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
            "Space required after 'PUBLIC'\n");
    }
    *publicID = xmlParsePubidLiteral(ctxt);
    if (*publicID == NULL) {
        xmlFatalErr(ctxt, XML_ERR_PUBID_REQUIRED, NULL);
    }
    if (strict) {
        /*
         * We don't handle [83] so "S SystemLiteral" is required.
         */
        if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
            "Space required after the Public Identifier\n");
        }
    } else {
        /*
         * We handle [83] so we return immediately, if
         * "S SystemLiteral" is not detected. We skip blanks if no
             * system literal was found, but this is harmless since we must
             * be at the end of a NotationDecl.
         */
        if (SKIP_BLANKS == 0) return(NULL);
        if ((CUR != '\'') && (CUR != '"')) return(NULL);
    }
    URI = xmlParseSystemLiteral(ctxt);
    if (URI == NULL) {
        xmlFatalErr(ctxt, XML_ERR_URI_REQUIRED, NULL);
        }
    }
    return(URI);
}
 
static void
xmlParseCommentComplex(xmlParserCtxtPtr ctxt, xmlChar *buf,
                       size_t len, size_t size) {
    int q, ql;
    int r, rl;
    int cur, l;
    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                       XML_MAX_HUGE_LENGTH :
                       XML_MAX_TEXT_LENGTH;
    int inputid;
 
    inputid = ctxt->input->id;
 
    if (buf == NULL) {
        len = 0;
    size = XML_PARSER_BUFFER_SIZE;
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
        xmlErrMemory(ctxt, NULL);
        return;
    }
    }
    q = CUR_CHAR(ql);
    if (q == 0)
        goto not_terminated;
    if (!IS_CHAR(q)) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                          "xmlParseComment: invalid xmlChar value %d\n",
                      q);
    xmlFree (buf);
    return;
    }
    NEXTL(ql);
    r = CUR_CHAR(rl);
    if (r == 0)
        goto not_terminated;
    if (!IS_CHAR(r)) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                          "xmlParseComment: invalid xmlChar value %d\n",
                      r);
    xmlFree (buf);
    return;
    }
    NEXTL(rl);
    cur = CUR_CHAR(l);
    if (cur == 0)
        goto not_terminated;
    while (IS_CHAR(cur) && /* checked */
           ((cur != '>') ||
        (r != '-') || (q != '-'))) {
    if ((r == '-') && (q == '-')) {
        xmlFatalErr(ctxt, XML_ERR_HYPHEN_IN_COMMENT, NULL);
    }
    if (len + 5 >= size) {
        xmlChar *new_buf;
            size_t new_size;
 
        new_size = size * 2;
        new_buf = (xmlChar *) xmlRealloc(buf, new_size);
        if (new_buf == NULL) {
        xmlFree (buf);
        xmlErrMemory(ctxt, NULL);
        return;
        }
        buf = new_buf;
            size = new_size;
    }
    COPY_BUF(buf, len, q);
        if (len > maxLength) {
            xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
                         "Comment too big found", NULL);
            xmlFree (buf);
            return;
        }
 
    q = r;
    ql = rl;
    r = cur;
    rl = l;
 
    NEXTL(l);
    cur = CUR_CHAR(l);
 
    }
    buf[len] = 0;
    if (ctxt->instate == XML_PARSER_EOF) {
        xmlFree(buf);
        return;
    }
    if (cur == 0) {
    xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
                         "Comment not terminated \n<!--%.50s\n", buf);
    } else if (!IS_CHAR(cur)) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                          "xmlParseComment: invalid xmlChar value %d\n",
                      cur);
    } else {
    if (inputid != ctxt->input->id) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                   "Comment doesn't start and stop in the same"
                           " entity\n");
    }
        NEXT;
    if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
        (!ctxt->disableSAX))
        ctxt->sax->comment(ctxt->userData, buf);
    }
    xmlFree(buf);
    return;
not_terminated:
    xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
             "Comment not terminated\n", NULL);
    xmlFree(buf);
    return;
}
 
void
xmlParseComment(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    size_t size = XML_PARSER_BUFFER_SIZE;
    size_t len = 0;
    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                       XML_MAX_HUGE_LENGTH :
                       XML_MAX_TEXT_LENGTH;
    xmlParserInputState state;
    const xmlChar *in;
    size_t nbchar = 0;
    int ccol;
    int inputid;
 
    /*
     * Check that there is a comment right here.
     */
    if ((RAW != '<') || (NXT(1) != '!'))
        return;
    SKIP(2);
    if ((RAW != '-') || (NXT(1) != '-'))
        return;
    state = ctxt->instate;
    ctxt->instate = XML_PARSER_COMMENT;
    inputid = ctxt->input->id;
    SKIP(2);
    GROW;
 
    /*
     * Accelerated common case where input don't need to be
     * modified before passing it to the handler.
     */
    in = ctxt->input->cur;
    do {
    if (*in == 0xA) {
        do {
        ctxt->input->line++; ctxt->input->col = 1;
        in++;
        } while (*in == 0xA);
    }
get_more:
        ccol = ctxt->input->col;
    while (((*in > '-') && (*in <= 0x7F)) ||
           ((*in >= 0x20) && (*in < '-')) ||
           (*in == 0x09)) {
            in++;
            ccol++;
    }
    ctxt->input->col = ccol;
    if (*in == 0xA) {
        do {
        ctxt->input->line++; ctxt->input->col = 1;
        in++;
        } while (*in == 0xA);
        goto get_more;
    }
    nbchar = in - ctxt->input->cur;
    /*
     * save current set of data
     */
    if (nbchar > 0) {
            if (buf == NULL) {
                if ((*in == '-') && (in[1] == '-'))
                    size = nbchar + 1;
                else
                    size = XML_PARSER_BUFFER_SIZE + nbchar;
                buf = (xmlChar *) xmlMallocAtomic(size);
                if (buf == NULL) {
                    xmlErrMemory(ctxt, NULL);
                    ctxt->instate = state;
                    return;
                }
                len = 0;
            } else if (len + nbchar + 1 >= size) {
                xmlChar *new_buf;
                size  += len + nbchar + XML_PARSER_BUFFER_SIZE;
                new_buf = (xmlChar *) xmlRealloc(buf, size);
                if (new_buf == NULL) {
                    xmlFree (buf);
                    xmlErrMemory(ctxt, NULL);
                    ctxt->instate = state;
                    return;
                }
                buf = new_buf;
            }
            memcpy(&buf[len], ctxt->input->cur, nbchar);
            len += nbchar;
            buf[len] = 0;
    }
        if (len > maxLength) {
            xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
                         "Comment too big found", NULL);
            xmlFree (buf);
            return;
        }
    ctxt->input->cur = in;
    if (*in == 0xA) {
        in++;
        ctxt->input->line++; ctxt->input->col = 1;
    }
    if (*in == 0xD) {
        in++;
        if (*in == 0xA) {
        ctxt->input->cur = in;
        in++;
        ctxt->input->line++; ctxt->input->col = 1;
        goto get_more;
        }
        in--;
    }
    SHRINK;
    GROW;
        if (ctxt->instate == XML_PARSER_EOF) {
            xmlFree(buf);
            return;
        }
    in = ctxt->input->cur;
    if (*in == '-') {
        if (in[1] == '-') {
            if (in[2] == '>') {
            if (ctxt->input->id != inputid) {
            xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                           "comment doesn't start and stop in the"
                                       " same entity\n");
            }
            SKIP(3);
            if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
                (!ctxt->disableSAX)) {
            if (buf != NULL)
                ctxt->sax->comment(ctxt->userData, buf);
            else
                ctxt->sax->comment(ctxt->userData, BAD_CAST "");
            }
            if (buf != NULL)
                xmlFree(buf);
            if (ctxt->instate != XML_PARSER_EOF)
            ctxt->instate = state;
            return;
        }
        if (buf != NULL) {
            xmlFatalErrMsgStr(ctxt, XML_ERR_HYPHEN_IN_COMMENT,
                              "Double hyphen within comment: "
                                      "<!--%.50s\n",
                      buf);
        } else
            xmlFatalErrMsgStr(ctxt, XML_ERR_HYPHEN_IN_COMMENT,
                              "Double hyphen within comment\n", NULL);
                if (ctxt->instate == XML_PARSER_EOF) {
                    xmlFree(buf);
                    return;
                }
        in++;
        ctxt->input->col++;
        }
        in++;
        ctxt->input->col++;
        goto get_more;
    }
    } while (((*in >= 0x20) && (*in <= 0x7F)) || (*in == 0x09) || (*in == 0x0a));
    xmlParseCommentComplex(ctxt, buf, len, size);
    ctxt->instate = state;
    return;
}
 
 
const xmlChar *
xmlParsePITarget(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
 
    name = xmlParseName(ctxt);
    if ((name != NULL) &&
        ((name[0] == 'x') || (name[0] == 'X')) &&
        ((name[1] == 'm') || (name[1] == 'M')) &&
        ((name[2] == 'l') || (name[2] == 'L'))) {
    int i;
    if ((name[0] == 'x') && (name[1] == 'm') &&
        (name[2] == 'l') && (name[3] == 0)) {
        xmlFatalErrMsg(ctxt, XML_ERR_RESERVED_XML_NAME,
         "XML declaration allowed only at the start of the document\n");
        return(name);
    } else if (name[3] == 0) {
        xmlFatalErr(ctxt, XML_ERR_RESERVED_XML_NAME, NULL);
        return(name);
    }
    for (i = 0;;i++) {
        if (xmlW3CPIs[i] == NULL) break;
        if (xmlStrEqual(name, (const xmlChar *)xmlW3CPIs[i]))
            return(name);
    }
    xmlWarningMsg(ctxt, XML_ERR_RESERVED_XML_NAME,
              "xmlParsePITarget: invalid name prefix 'xml'\n",
              NULL, NULL);
    }
    if ((name != NULL) && (xmlStrchr(name, ':') != NULL)) {
    xmlNsErr(ctxt, XML_NS_ERR_COLON,
         "colons are forbidden from PI names '%s'\n", name, NULL, NULL);
    }
    return(name);
}
 
#ifdef LIBXML_CATALOG_ENABLED
static void
xmlParseCatalogPI(xmlParserCtxtPtr ctxt, const xmlChar *catalog) {
    xmlChar *URL = NULL;
    const xmlChar *tmp, *base;
    xmlChar marker;
 
    tmp = catalog;
    while (IS_BLANK_CH(*tmp)) tmp++;
    if (xmlStrncmp(tmp, BAD_CAST"catalog", 7))
    goto error;
    tmp += 7;
    while (IS_BLANK_CH(*tmp)) tmp++;
    if (*tmp != '=') {
    return;
    }
    tmp++;
    while (IS_BLANK_CH(*tmp)) tmp++;
    marker = *tmp;
    if ((marker != '\'') && (marker != '"'))
    goto error;
    tmp++;
    base = tmp;
    while ((*tmp != 0) && (*tmp != marker)) tmp++;
    if (*tmp == 0)
    goto error;
    URL = xmlStrndup(base, tmp - base);
    tmp++;
    while (IS_BLANK_CH(*tmp)) tmp++;
    if (*tmp != 0)
    goto error;
 
    if (URL != NULL) {
    ctxt->catalogs = xmlCatalogAddLocal(ctxt->catalogs, URL);
    xmlFree(URL);
    }
    return;
 
error:
    xmlWarningMsg(ctxt, XML_WAR_CATALOG_PI,
              "Catalog PI syntax error: %s\n",
          catalog, NULL);
    if (URL != NULL)
    xmlFree(URL);
}
#endif
 
void
xmlParsePI(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    size_t len = 0;
    size_t size = XML_PARSER_BUFFER_SIZE;
    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                       XML_MAX_HUGE_LENGTH :
                       XML_MAX_TEXT_LENGTH;
    int cur, l;
    const xmlChar *target;
    xmlParserInputState state;
 
    if ((RAW == '<') && (NXT(1) == '?')) {
    int inputid = ctxt->input->id;
    state = ctxt->instate;
        ctxt->instate = XML_PARSER_PI;
    /*
     * this is a Processing Instruction.
     */
    SKIP(2);
 
    /*
     * Parse the target name and check for special support like
     * namespace.
     */
        target = xmlParsePITarget(ctxt);
    if (target != NULL) {
        if ((RAW == '?') && (NXT(1) == '>')) {
        if (inputid != ctxt->input->id) {
            xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "PI declaration doesn't start and stop in"
                                   " the same entity\n");
        }
        SKIP(2);
 
        /*
         * SAX: PI detected.
         */
        if ((ctxt->sax) && (!ctxt->disableSAX) &&
            (ctxt->sax->processingInstruction != NULL))
            ctxt->sax->processingInstruction(ctxt->userData,
                                             target, NULL);
        if (ctxt->instate != XML_PARSER_EOF)
            ctxt->instate = state;
        return;
        }
        buf = (xmlChar *) xmlMallocAtomic(size);
        if (buf == NULL) {
        xmlErrMemory(ctxt, NULL);
        ctxt->instate = state;
        return;
        }
        if (SKIP_BLANKS == 0) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_SPACE_REQUIRED,
              "ParsePI: PI %s space expected\n", target);
        }
        cur = CUR_CHAR(l);
        while (IS_CHAR(cur) && /* checked */
           ((cur != '?') || (NXT(1) != '>'))) {
        if (len + 5 >= size) {
            xmlChar *tmp;
                    size_t new_size = size * 2;
            tmp = (xmlChar *) xmlRealloc(buf, new_size);
            if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            xmlFree(buf);
            ctxt->instate = state;
            return;
            }
            buf = tmp;
                    size = new_size;
        }
        COPY_BUF(buf, len, cur);
                if (len > maxLength) {
                    xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
                                      "PI %s too big found", target);
                    xmlFree(buf);
                    ctxt->instate = state;
                    return;
                }
        NEXTL(l);
        cur = CUR_CHAR(l);
        }
        buf[len] = 0;
            if (ctxt->instate == XML_PARSER_EOF) {
                xmlFree(buf);
                return;
            }
        if (cur != '?') {
        xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
              "ParsePI: PI %s never end ...\n", target);
        } else {
        if (inputid != ctxt->input->id) {
            xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "PI declaration doesn't start and stop in"
                                   " the same entity\n");
        }
        SKIP(2);
 
#ifdef LIBXML_CATALOG_ENABLED
        if (((state == XML_PARSER_MISC) ||
                 (state == XML_PARSER_START)) &&
            (xmlStrEqual(target, XML_CATALOG_PI))) {
            xmlCatalogAllow allow = xmlCatalogGetDefaults();
            if ((allow == XML_CATA_ALLOW_DOCUMENT) ||
            (allow == XML_CATA_ALLOW_ALL))
            xmlParseCatalogPI(ctxt, buf);
        }
#endif
 
 
        /*
         * SAX: PI detected.
         */
        if ((ctxt->sax) && (!ctxt->disableSAX) &&
            (ctxt->sax->processingInstruction != NULL))
            ctxt->sax->processingInstruction(ctxt->userData,
                                             target, buf);
        }
        xmlFree(buf);
    } else {
        xmlFatalErr(ctxt, XML_ERR_PI_NOT_STARTED, NULL);
    }
    if (ctxt->instate != XML_PARSER_EOF)
        ctxt->instate = state;
    }
}
 
void
xmlParseNotationDecl(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
    xmlChar *Pubid;
    xmlChar *Systemid;
 
    if ((CUR != '<') || (NXT(1) != '!'))
        return;
    SKIP(2);
 
    if (CMP8(CUR_PTR, 'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N')) {
    int inputid = ctxt->input->id;
    SKIP(8);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space required after '<!NOTATION'\n");
        return;
    }
 
        name = xmlParseName(ctxt);
    if (name == NULL) {
        xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_STARTED, NULL);
        return;
    }
    if (xmlStrchr(name, ':') != NULL) {
        xmlNsErr(ctxt, XML_NS_ERR_COLON,
             "colons are forbidden from notation names '%s'\n",
             name, NULL, NULL);
    }
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
             "Space required after the NOTATION name'\n");
        return;
    }
 
    /*
     * Parse the IDs.
     */
    Systemid = xmlParseExternalID(ctxt, &Pubid, 0);
    SKIP_BLANKS;
 
    if (RAW == '>') {
        if (inputid != ctxt->input->id) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                           "Notation declaration doesn't start and stop"
                               " in the same entity\n");
        }
        NEXT;
        if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
        (ctxt->sax->notationDecl != NULL))
        ctxt->sax->notationDecl(ctxt->userData, name, Pubid, Systemid);
    } else {
        xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_FINISHED, NULL);
    }
    if (Systemid != NULL) xmlFree(Systemid);
    if (Pubid != NULL) xmlFree(Pubid);
    }
}
 
void
xmlParseEntityDecl(xmlParserCtxtPtr ctxt) {
    const xmlChar *name = NULL;
    xmlChar *value = NULL;
    xmlChar *URI = NULL, *literal = NULL;
    const xmlChar *ndata = NULL;
    int isParameter = 0;
    xmlChar *orig = NULL;
 
    if ((CUR != '<') || (NXT(1) != '!'))
        return;
    SKIP(2);
 
    /* GROW; done in the caller */
    if (CMP6(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'Y')) {
    int inputid = ctxt->input->id;
    SKIP(6);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space required after '<!ENTITY'\n");
    }
 
    if (RAW == '%') {
        NEXT;
        if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                   "Space required after '%%'\n");
        }
        isParameter = 1;
    }
 
        name = xmlParseName(ctxt);
    if (name == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
                       "xmlParseEntityDecl: no name\n");
            return;
    }
    if (xmlStrchr(name, ':') != NULL) {
        xmlNsErr(ctxt, XML_NS_ERR_COLON,
             "colons are forbidden from entities names '%s'\n",
             name, NULL, NULL);
    }
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space required after the entity name\n");
    }
 
    ctxt->instate = XML_PARSER_ENTITY_DECL;
    /*
     * handle the various case of definitions...
     */
    if (isParameter) {
        if ((RAW == '"') || (RAW == '\'')) {
            value = xmlParseEntityValue(ctxt, &orig);
        if (value) {
            if ((ctxt->sax != NULL) &&
            (!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL))
            ctxt->sax->entityDecl(ctxt->userData, name,
                            XML_INTERNAL_PARAMETER_ENTITY,
                    NULL, NULL, value);
        }
        } else {
            URI = xmlParseExternalID(ctxt, &literal, 1);
        if ((URI == NULL) && (literal == NULL)) {
            xmlFatalErr(ctxt, XML_ERR_VALUE_REQUIRED, NULL);
        }
        if (URI) {
            xmlURIPtr uri;
 
            uri = xmlParseURI((const char *) URI);
            if (uri == NULL) {
                xmlErrMsgStr(ctxt, XML_ERR_INVALID_URI,
                     "Invalid URI: %s\n", URI);
            /*
             * This really ought to be a well formedness error
             * but the XML Core WG decided otherwise c.f. issue
             * E26 of the XML erratas.
             */
            } else {
            if (uri->fragment != NULL) {
                /*
                 * Okay this is foolish to block those but not
                 * invalid URIs.
                 */
                xmlFatalErr(ctxt, XML_ERR_URI_FRAGMENT, NULL);
            } else {
                if ((ctxt->sax != NULL) &&
                (!ctxt->disableSAX) &&
                (ctxt->sax->entityDecl != NULL))
                ctxt->sax->entityDecl(ctxt->userData, name,
                        XML_EXTERNAL_PARAMETER_ENTITY,
                        literal, URI, NULL);
            }
            xmlFreeURI(uri);
            }
        }
        }
    } else {
        if ((RAW == '"') || (RAW == '\'')) {
            value = xmlParseEntityValue(ctxt, &orig);
        if ((ctxt->sax != NULL) &&
            (!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL))
            ctxt->sax->entityDecl(ctxt->userData, name,
                XML_INTERNAL_GENERAL_ENTITY,
                NULL, NULL, value);
        /*
         * For expat compatibility in SAX mode.
         */
        if ((ctxt->myDoc == NULL) ||
            (xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE))) {
            if (ctxt->myDoc == NULL) {
            ctxt->myDoc = xmlNewDoc(SAX_COMPAT_MODE);
            if (ctxt->myDoc == NULL) {
                xmlErrMemory(ctxt, "New Doc failed");
                goto done;
            }
            ctxt->myDoc->properties = XML_DOC_INTERNAL;
            }
            if (ctxt->myDoc->intSubset == NULL)
            ctxt->myDoc->intSubset = xmlNewDtd(ctxt->myDoc,
                        BAD_CAST "fake", NULL, NULL);
 
            xmlSAX2EntityDecl(ctxt, name, XML_INTERNAL_GENERAL_ENTITY,
                          NULL, NULL, value);
        }
        } else {
            URI = xmlParseExternalID(ctxt, &literal, 1);
        if ((URI == NULL) && (literal == NULL)) {
            xmlFatalErr(ctxt, XML_ERR_VALUE_REQUIRED, NULL);
        }
        if (URI) {
            xmlURIPtr uri;
 
            uri = xmlParseURI((const char *)URI);
            if (uri == NULL) {
                xmlErrMsgStr(ctxt, XML_ERR_INVALID_URI,
                     "Invalid URI: %s\n", URI);
            /*
             * This really ought to be a well formedness error
             * but the XML Core WG decided otherwise c.f. issue
             * E26 of the XML erratas.
             */
            } else {
            if (uri->fragment != NULL) {
                /*
                 * Okay this is foolish to block those but not
                 * invalid URIs.
                 */
                xmlFatalErr(ctxt, XML_ERR_URI_FRAGMENT, NULL);
            }
            xmlFreeURI(uri);
            }
        }
        if ((RAW != '>') && (SKIP_BLANKS == 0)) {
            xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                   "Space required before 'NDATA'\n");
        }
        if (CMP5(CUR_PTR, 'N', 'D', 'A', 'T', 'A')) {
            SKIP(5);
            if (SKIP_BLANKS == 0) {
            xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                       "Space required after 'NDATA'\n");
            }
            ndata = xmlParseName(ctxt);
            if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
                (ctxt->sax->unparsedEntityDecl != NULL))
            ctxt->sax->unparsedEntityDecl(ctxt->userData, name,
                    literal, URI, ndata);
        } else {
            if ((ctxt->sax != NULL) &&
                (!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL))
            ctxt->sax->entityDecl(ctxt->userData, name,
                    XML_EXTERNAL_GENERAL_PARSED_ENTITY,
                    literal, URI, NULL);
            /*
             * For expat compatibility in SAX mode.
             * assuming the entity replacement was asked for
             */
            if ((ctxt->replaceEntities != 0) &&
            ((ctxt->myDoc == NULL) ||
            (xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE)))) {
            if (ctxt->myDoc == NULL) {
                ctxt->myDoc = xmlNewDoc(SAX_COMPAT_MODE);
                if (ctxt->myDoc == NULL) {
                    xmlErrMemory(ctxt, "New Doc failed");
                goto done;
                }
                ctxt->myDoc->properties = XML_DOC_INTERNAL;
            }
 
            if (ctxt->myDoc->intSubset == NULL)
                ctxt->myDoc->intSubset = xmlNewDtd(ctxt->myDoc,
                        BAD_CAST "fake", NULL, NULL);
            xmlSAX2EntityDecl(ctxt, name,
                          XML_EXTERNAL_GENERAL_PARSED_ENTITY,
                          literal, URI, NULL);
            }
        }
        }
    }
    if (ctxt->instate == XML_PARSER_EOF)
        goto done;
    SKIP_BLANKS;
    if (RAW != '>') {
        xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_NOT_FINISHED,
                "xmlParseEntityDecl: entity %s not terminated\n", name);
        xmlHaltParser(ctxt);
    } else {
        if (inputid != ctxt->input->id) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                           "Entity declaration doesn't start and stop in"
                               " the same entity\n");
        }
        NEXT;
    }
    if (orig != NULL) {
        /*
         * Ugly mechanism to save the raw entity value.
         */
        xmlEntityPtr cur = NULL;
 
        if (isParameter) {
            if ((ctxt->sax != NULL) &&
            (ctxt->sax->getParameterEntity != NULL))
            cur = ctxt->sax->getParameterEntity(ctxt->userData, name);
        } else {
            if ((ctxt->sax != NULL) &&
            (ctxt->sax->getEntity != NULL))
            cur = ctxt->sax->getEntity(ctxt->userData, name);
        if ((cur == NULL) && (ctxt->userData==ctxt)) {
            cur = xmlSAX2GetEntity(ctxt, name);
        }
        }
            if ((cur != NULL) && (cur->orig == NULL)) {
        cur->orig = orig;
                orig = NULL;
        }
    }
 
done:
    if (value != NULL) xmlFree(value);
    if (URI != NULL) xmlFree(URI);
    if (literal != NULL) xmlFree(literal);
        if (orig != NULL) xmlFree(orig);
    }
}
 
int
xmlParseDefaultDecl(xmlParserCtxtPtr ctxt, xmlChar **value) {
    int val;
    xmlChar *ret;
 
    *value = NULL;
    if (CMP9(CUR_PTR, '#', 'R', 'E', 'Q', 'U', 'I', 'R', 'E', 'D')) {
    SKIP(9);
    return(XML_ATTRIBUTE_REQUIRED);
    }
    if (CMP8(CUR_PTR, '#', 'I', 'M', 'P', 'L', 'I', 'E', 'D')) {
    SKIP(8);
    return(XML_ATTRIBUTE_IMPLIED);
    }
    val = XML_ATTRIBUTE_NONE;
    if (CMP6(CUR_PTR, '#', 'F', 'I', 'X', 'E', 'D')) {
    SKIP(6);
    val = XML_ATTRIBUTE_FIXED;
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space required after '#FIXED'\n");
    }
    }
    ret = xmlParseAttValue(ctxt);
    ctxt->instate = XML_PARSER_DTD;
    if (ret == NULL) {
    xmlFatalErrMsg(ctxt, (xmlParserErrors)ctxt->errNo,
               "Attribute default value declaration error\n");
    } else
        *value = ret;
    return(val);
}
 
xmlEnumerationPtr
xmlParseNotationType(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
    xmlEnumerationPtr ret = NULL, last = NULL, cur, tmp;
 
    if (RAW != '(') {
    xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_STARTED, NULL);
    return(NULL);
    }
    do {
        NEXT;
    SKIP_BLANKS;
        name = xmlParseName(ctxt);
    if (name == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "Name expected in NOTATION declaration\n");
            xmlFreeEnumeration(ret);
        return(NULL);
    }
    tmp = ret;
    while (tmp != NULL) {
        if (xmlStrEqual(name, tmp->name)) {
        xmlValidityError(ctxt, XML_DTD_DUP_TOKEN,
      "standalone: attribute notation value token %s duplicated\n",
                 name, NULL);
        if (!xmlDictOwns(ctxt->dict, name))
            xmlFree((xmlChar *) name);
        break;
        }
        tmp = tmp->next;
    }
    if (tmp == NULL) {
        cur = xmlCreateEnumeration(name);
        if (cur == NULL) {
                xmlFreeEnumeration(ret);
                return(NULL);
            }
        if (last == NULL) ret = last = cur;
        else {
        last->next = cur;
        last = cur;
        }
    }
    SKIP_BLANKS;
    } while (RAW == '|');
    if (RAW != ')') {
    xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_FINISHED, NULL);
        xmlFreeEnumeration(ret);
    return(NULL);
    }
    NEXT;
    return(ret);
}
 
xmlEnumerationPtr
xmlParseEnumerationType(xmlParserCtxtPtr ctxt) {
    xmlChar *name;
    xmlEnumerationPtr ret = NULL, last = NULL, cur, tmp;
 
    if (RAW != '(') {
    xmlFatalErr(ctxt, XML_ERR_ATTLIST_NOT_STARTED, NULL);
    return(NULL);
    }
    do {
        NEXT;
    SKIP_BLANKS;
        name = xmlParseNmtoken(ctxt);
    if (name == NULL) {
        xmlFatalErr(ctxt, XML_ERR_NMTOKEN_REQUIRED, NULL);
        return(ret);
    }
    tmp = ret;
    while (tmp != NULL) {
        if (xmlStrEqual(name, tmp->name)) {
        xmlValidityError(ctxt, XML_DTD_DUP_TOKEN,
      "standalone: attribute enumeration value token %s duplicated\n",
                 name, NULL);
        if (!xmlDictOwns(ctxt->dict, name))
            xmlFree(name);
        break;
        }
        tmp = tmp->next;
    }
    if (tmp == NULL) {
        cur = xmlCreateEnumeration(name);
        if (!xmlDictOwns(ctxt->dict, name))
        xmlFree(name);
        if (cur == NULL) {
                xmlFreeEnumeration(ret);
                return(NULL);
            }
        if (last == NULL) ret = last = cur;
        else {
        last->next = cur;
        last = cur;
        }
    }
    SKIP_BLANKS;
    } while (RAW == '|');
    if (RAW != ')') {
    xmlFatalErr(ctxt, XML_ERR_ATTLIST_NOT_FINISHED, NULL);
    return(ret);
    }
    NEXT;
    return(ret);
}
 
int
xmlParseEnumeratedType(xmlParserCtxtPtr ctxt, xmlEnumerationPtr *tree) {
    if (CMP8(CUR_PTR, 'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N')) {
    SKIP(8);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space required after 'NOTATION'\n");
        return(0);
    }
    *tree = xmlParseNotationType(ctxt);
    if (*tree == NULL) return(0);
    return(XML_ATTRIBUTE_NOTATION);
    }
    *tree = xmlParseEnumerationType(ctxt);
    if (*tree == NULL) return(0);
    return(XML_ATTRIBUTE_ENUMERATION);
}
 
int
xmlParseAttributeType(xmlParserCtxtPtr ctxt, xmlEnumerationPtr *tree) {
    if (CMP5(CUR_PTR, 'C', 'D', 'A', 'T', 'A')) {
    SKIP(5);
    return(XML_ATTRIBUTE_CDATA);
     } else if (CMP6(CUR_PTR, 'I', 'D', 'R', 'E', 'F', 'S')) {
    SKIP(6);
    return(XML_ATTRIBUTE_IDREFS);
     } else if (CMP5(CUR_PTR, 'I', 'D', 'R', 'E', 'F')) {
    SKIP(5);
    return(XML_ATTRIBUTE_IDREF);
     } else if ((RAW == 'I') && (NXT(1) == 'D')) {
        SKIP(2);
    return(XML_ATTRIBUTE_ID);
     } else if (CMP6(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'Y')) {
    SKIP(6);
    return(XML_ATTRIBUTE_ENTITY);
     } else if (CMP8(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'I', 'E', 'S')) {
    SKIP(8);
    return(XML_ATTRIBUTE_ENTITIES);
     } else if (CMP8(CUR_PTR, 'N', 'M', 'T', 'O', 'K', 'E', 'N', 'S')) {
    SKIP(8);
    return(XML_ATTRIBUTE_NMTOKENS);
     } else if (CMP7(CUR_PTR, 'N', 'M', 'T', 'O', 'K', 'E', 'N')) {
    SKIP(7);
    return(XML_ATTRIBUTE_NMTOKEN);
     }
     return(xmlParseEnumeratedType(ctxt, tree));
}
 
void
xmlParseAttributeListDecl(xmlParserCtxtPtr ctxt) {
    const xmlChar *elemName;
    const xmlChar *attrName;
    xmlEnumerationPtr tree;
 
    if ((CUR != '<') || (NXT(1) != '!'))
        return;
    SKIP(2);
 
    if (CMP7(CUR_PTR, 'A', 'T', 'T', 'L', 'I', 'S', 'T')) {
    int inputid = ctxt->input->id;
 
    SKIP(7);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                         "Space required after '<!ATTLIST'\n");
    }
        elemName = xmlParseName(ctxt);
    if (elemName == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "ATTLIST: no name for Element\n");
        return;
    }
    SKIP_BLANKS;
    GROW;
    while ((RAW != '>') && (ctxt->instate != XML_PARSER_EOF)) {
        int type;
        int def;
        xmlChar *defaultValue = NULL;
 
        GROW;
            tree = NULL;
        attrName = xmlParseName(ctxt);
        if (attrName == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
                   "ATTLIST: no name for Attribute\n");
        break;
        }
        GROW;
        if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                "Space required after the attribute name\n");
        break;
        }
 
        type = xmlParseAttributeType(ctxt, &tree);
        if (type <= 0) {
            break;
        }
 
        GROW;
        if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                   "Space required after the attribute type\n");
            if (tree != NULL)
            xmlFreeEnumeration(tree);
        break;
        }
 
        def = xmlParseDefaultDecl(ctxt, &defaultValue);
        if (def <= 0) {
                if (defaultValue != NULL)
            xmlFree(defaultValue);
            if (tree != NULL)
            xmlFreeEnumeration(tree);
            break;
        }
        if ((type != XML_ATTRIBUTE_CDATA) && (defaultValue != NULL))
            xmlAttrNormalizeSpace(defaultValue, defaultValue);
 
        GROW;
            if (RAW != '>') {
        if (SKIP_BLANKS == 0) {
            xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
            "Space required after the attribute default value\n");
            if (defaultValue != NULL)
            xmlFree(defaultValue);
            if (tree != NULL)
            xmlFreeEnumeration(tree);
            break;
        }
        }
        if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
        (ctxt->sax->attributeDecl != NULL))
        ctxt->sax->attributeDecl(ctxt->userData, elemName, attrName,
                            type, def, defaultValue, tree);
        else if (tree != NULL)
        xmlFreeEnumeration(tree);
 
        if ((ctxt->sax2) && (defaultValue != NULL) &&
            (def != XML_ATTRIBUTE_IMPLIED) &&
        (def != XML_ATTRIBUTE_REQUIRED)) {
        xmlAddDefAttrs(ctxt, elemName, attrName, defaultValue);
        }
        if (ctxt->sax2) {
        xmlAddSpecialAttr(ctxt, elemName, attrName, type);
        }
        if (defaultValue != NULL)
            xmlFree(defaultValue);
        GROW;
    }
    if (RAW == '>') {
        if (inputid != ctxt->input->id) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "Attribute list declaration doesn't start and"
                               " stop in the same entity\n");
        }
        NEXT;
    }
    }
}
 
xmlElementContentPtr
xmlParseElementMixedContentDecl(xmlParserCtxtPtr ctxt, int inputchk) {
    xmlElementContentPtr ret = NULL, cur = NULL, n;
    const xmlChar *elem = NULL;
 
    GROW;
    if (CMP7(CUR_PTR, '#', 'P', 'C', 'D', 'A', 'T', 'A')) {
    SKIP(7);
    SKIP_BLANKS;
    if (RAW == ')') {
        if (ctxt->input->id != inputchk) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "Element content declaration doesn't start and"
                               " stop in the same entity\n");
        }
        NEXT;
        ret = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_PCDATA);
        if (ret == NULL)
            return(NULL);
        if (RAW == '*') {
        ret->ocur = XML_ELEMENT_CONTENT_MULT;
        NEXT;
        }
        return(ret);
    }
    if ((RAW == '(') || (RAW == '|')) {
        ret = cur = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_PCDATA);
        if (ret == NULL) return(NULL);
    }
    while ((RAW == '|') && (ctxt->instate != XML_PARSER_EOF)) {
        NEXT;
        if (elem == NULL) {
            ret = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR);
        if (ret == NULL) {
            xmlFreeDocElementContent(ctxt->myDoc, cur);
                    return(NULL);
                }
        ret->c1 = cur;
        if (cur != NULL)
            cur->parent = ret;
        cur = ret;
        } else {
            n = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR);
        if (n == NULL) {
            xmlFreeDocElementContent(ctxt->myDoc, ret);
                    return(NULL);
                }
        n->c1 = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT);
        if (n->c1 != NULL)
            n->c1->parent = n;
            cur->c2 = n;
        if (n != NULL)
            n->parent = cur;
        cur = n;
        }
        SKIP_BLANKS;
        elem = xmlParseName(ctxt);
        if (elem == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
            "xmlParseElementMixedContentDecl : Name expected\n");
        xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        SKIP_BLANKS;
        GROW;
    }
    if ((RAW == ')') && (NXT(1) == '*')) {
        if (elem != NULL) {
        cur->c2 = xmlNewDocElementContent(ctxt->myDoc, elem,
                                       XML_ELEMENT_CONTENT_ELEMENT);
        if (cur->c2 != NULL)
            cur->c2->parent = cur;
            }
            if (ret != NULL)
                ret->ocur = XML_ELEMENT_CONTENT_MULT;
        if (ctxt->input->id != inputchk) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "Element content declaration doesn't start and"
                               " stop in the same entity\n");
        }
        SKIP(2);
    } else {
        xmlFreeDocElementContent(ctxt->myDoc, ret);
        xmlFatalErr(ctxt, XML_ERR_MIXED_NOT_STARTED, NULL);
        return(NULL);
    }
 
    } else {
    xmlFatalErr(ctxt, XML_ERR_PCDATA_REQUIRED, NULL);
    }
    return(ret);
}
 
static xmlElementContentPtr
xmlParseElementChildrenContentDeclPriv(xmlParserCtxtPtr ctxt, int inputchk,
                                       int depth) {
    xmlElementContentPtr ret = NULL, cur = NULL, last = NULL, op = NULL;
    const xmlChar *elem;
    xmlChar type = 0;
 
    if (((depth > 128) && ((ctxt->options & XML_PARSE_HUGE) == 0)) ||
        (depth >  2048)) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_ELEMCONTENT_NOT_FINISHED,
"xmlParseElementChildrenContentDecl : depth %d too deep, use XML_PARSE_HUGE\n",
                          depth);
    return(NULL);
    }
    SKIP_BLANKS;
    GROW;
    if (RAW == '(') {
    int inputid = ctxt->input->id;
 
        /* Recurse on first child */
    NEXT;
    SKIP_BLANKS;
        cur = ret = xmlParseElementChildrenContentDeclPriv(ctxt, inputid,
                                                           depth + 1);
        if (cur == NULL)
            return(NULL);
    SKIP_BLANKS;
    GROW;
    } else {
    elem = xmlParseName(ctxt);
    if (elem == NULL) {
        xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, NULL);
        return(NULL);
    }
        cur = ret = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT);
    if (cur == NULL) {
        xmlErrMemory(ctxt, NULL);
        return(NULL);
    }
    GROW;
    if (RAW == '?') {
        cur->ocur = XML_ELEMENT_CONTENT_OPT;
        NEXT;
    } else if (RAW == '*') {
        cur->ocur = XML_ELEMENT_CONTENT_MULT;
        NEXT;
    } else if (RAW == '+') {
        cur->ocur = XML_ELEMENT_CONTENT_PLUS;
        NEXT;
    } else {
        cur->ocur = XML_ELEMENT_CONTENT_ONCE;
    }
    GROW;
    }
    SKIP_BLANKS;
    while ((RAW != ')') && (ctxt->instate != XML_PARSER_EOF)) {
        /*
     * Each loop we parse one separator and one element.
     */
        if (RAW == ',') {
        if (type == 0) type = CUR;
 
        /*
         * Detect "Name | Name , Name" error
         */
        else if (type != CUR) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_SEPARATOR_REQUIRED,
            "xmlParseElementChildrenContentDecl : '%c' expected\n",
                          type);
        if ((last != NULL) && (last != ret))
            xmlFreeDocElementContent(ctxt->myDoc, last);
        if (ret != NULL)
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        NEXT;
 
        op = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_SEQ);
        if (op == NULL) {
        if ((last != NULL) && (last != ret))
            xmlFreeDocElementContent(ctxt->myDoc, last);
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        if (last == NULL) {
        op->c1 = ret;
        if (ret != NULL)
            ret->parent = op;
        ret = cur = op;
        } else {
            cur->c2 = op;
        if (op != NULL)
            op->parent = cur;
        op->c1 = last;
        if (last != NULL)
            last->parent = op;
        cur =op;
        last = NULL;
        }
    } else if (RAW == '|') {
        if (type == 0) type = CUR;
 
        /*
         * Detect "Name , Name | Name" error
         */
        else if (type != CUR) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_SEPARATOR_REQUIRED,
            "xmlParseElementChildrenContentDecl : '%c' expected\n",
                  type);
        if ((last != NULL) && (last != ret))
            xmlFreeDocElementContent(ctxt->myDoc, last);
        if (ret != NULL)
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        NEXT;
 
        op = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR);
        if (op == NULL) {
        if ((last != NULL) && (last != ret))
            xmlFreeDocElementContent(ctxt->myDoc, last);
        if (ret != NULL)
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        if (last == NULL) {
        op->c1 = ret;
        if (ret != NULL)
            ret->parent = op;
        ret = cur = op;
        } else {
            cur->c2 = op;
        if (op != NULL)
            op->parent = cur;
        op->c1 = last;
        if (last != NULL)
            last->parent = op;
        cur =op;
        last = NULL;
        }
    } else {
        xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_FINISHED, NULL);
        if ((last != NULL) && (last != ret))
            xmlFreeDocElementContent(ctxt->myDoc, last);
        if (ret != NULL)
        xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
    }
    GROW;
    SKIP_BLANKS;
    GROW;
    if (RAW == '(') {
        int inputid = ctxt->input->id;
        /* Recurse on second child */
        NEXT;
        SKIP_BLANKS;
        last = xmlParseElementChildrenContentDeclPriv(ctxt, inputid,
                                                          depth + 1);
            if (last == NULL) {
        if (ret != NULL)
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
            }
        SKIP_BLANKS;
    } else {
        elem = xmlParseName(ctxt);
        if (elem == NULL) {
        xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, NULL);
        if (ret != NULL)
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        last = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT);
        if (last == NULL) {
        if (ret != NULL)
            xmlFreeDocElementContent(ctxt->myDoc, ret);
        return(NULL);
        }
        if (RAW == '?') {
        last->ocur = XML_ELEMENT_CONTENT_OPT;
        NEXT;
        } else if (RAW == '*') {
        last->ocur = XML_ELEMENT_CONTENT_MULT;
        NEXT;
        } else if (RAW == '+') {
        last->ocur = XML_ELEMENT_CONTENT_PLUS;
        NEXT;
        } else {
        last->ocur = XML_ELEMENT_CONTENT_ONCE;
        }
    }
    SKIP_BLANKS;
    GROW;
    }
    if ((cur != NULL) && (last != NULL)) {
        cur->c2 = last;
    if (last != NULL)
        last->parent = cur;
    }
    if (ctxt->input->id != inputchk) {
    xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                       "Element content declaration doesn't start and stop in"
                       " the same entity\n");
    }
    NEXT;
    if (RAW == '?') {
    if (ret != NULL) {
        if ((ret->ocur == XML_ELEMENT_CONTENT_PLUS) ||
            (ret->ocur == XML_ELEMENT_CONTENT_MULT))
            ret->ocur = XML_ELEMENT_CONTENT_MULT;
        else
            ret->ocur = XML_ELEMENT_CONTENT_OPT;
    }
    NEXT;
    } else if (RAW == '*') {
    if (ret != NULL) {
        ret->ocur = XML_ELEMENT_CONTENT_MULT;
        cur = ret;
        /*
         * Some normalization:
         * (a | b* | c?)* == (a | b | c)*
         */
        while ((cur != NULL) && (cur->type == XML_ELEMENT_CONTENT_OR)) {
        if ((cur->c1 != NULL) &&
                ((cur->c1->ocur == XML_ELEMENT_CONTENT_OPT) ||
             (cur->c1->ocur == XML_ELEMENT_CONTENT_MULT)))
            cur->c1->ocur = XML_ELEMENT_CONTENT_ONCE;
        if ((cur->c2 != NULL) &&
                ((cur->c2->ocur == XML_ELEMENT_CONTENT_OPT) ||
             (cur->c2->ocur == XML_ELEMENT_CONTENT_MULT)))
            cur->c2->ocur = XML_ELEMENT_CONTENT_ONCE;
        cur = cur->c2;
        }
    }
    NEXT;
    } else if (RAW == '+') {
    if (ret != NULL) {
        int found = 0;
 
        if ((ret->ocur == XML_ELEMENT_CONTENT_OPT) ||
            (ret->ocur == XML_ELEMENT_CONTENT_MULT))
            ret->ocur = XML_ELEMENT_CONTENT_MULT;
        else
            ret->ocur = XML_ELEMENT_CONTENT_PLUS;
        /*
         * Some normalization:
         * (a | b*)+ == (a | b)*
         * (a | b?)+ == (a | b)*
         */
        while ((cur != NULL) && (cur->type == XML_ELEMENT_CONTENT_OR)) {
        if ((cur->c1 != NULL) &&
                ((cur->c1->ocur == XML_ELEMENT_CONTENT_OPT) ||
             (cur->c1->ocur == XML_ELEMENT_CONTENT_MULT))) {
            cur->c1->ocur = XML_ELEMENT_CONTENT_ONCE;
            found = 1;
        }
        if ((cur->c2 != NULL) &&
                ((cur->c2->ocur == XML_ELEMENT_CONTENT_OPT) ||
             (cur->c2->ocur == XML_ELEMENT_CONTENT_MULT))) {
            cur->c2->ocur = XML_ELEMENT_CONTENT_ONCE;
            found = 1;
        }
        cur = cur->c2;
        }
        if (found)
        ret->ocur = XML_ELEMENT_CONTENT_MULT;
    }
    NEXT;
    }
    return(ret);
}
 
xmlElementContentPtr
xmlParseElementChildrenContentDecl(xmlParserCtxtPtr ctxt, int inputchk) {
    /* stub left for API/ABI compat */
    return(xmlParseElementChildrenContentDeclPriv(ctxt, inputchk, 1));
}
 
int
xmlParseElementContentDecl(xmlParserCtxtPtr ctxt, const xmlChar *name,
                           xmlElementContentPtr *result) {
 
    xmlElementContentPtr tree = NULL;
    int inputid = ctxt->input->id;
    int res;
 
    *result = NULL;
 
    if (RAW != '(') {
    xmlFatalErrMsgStr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED,
        "xmlParseElementContentDecl : %s '(' expected\n", name);
    return(-1);
    }
    NEXT;
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        return(-1);
    SKIP_BLANKS;
    if (CMP7(CUR_PTR, '#', 'P', 'C', 'D', 'A', 'T', 'A')) {
        tree = xmlParseElementMixedContentDecl(ctxt, inputid);
    res = XML_ELEMENT_TYPE_MIXED;
    } else {
        tree = xmlParseElementChildrenContentDeclPriv(ctxt, inputid, 1);
    res = XML_ELEMENT_TYPE_ELEMENT;
    }
    SKIP_BLANKS;
    *result = tree;
    return(res);
}
 
int
xmlParseElementDecl(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
    int ret = -1;
    xmlElementContentPtr content  = NULL;
 
    if ((CUR != '<') || (NXT(1) != '!'))
        return(ret);
    SKIP(2);
 
    /* GROW; done in the caller */
    if (CMP7(CUR_PTR, 'E', 'L', 'E', 'M', 'E', 'N', 'T')) {
    int inputid = ctxt->input->id;
 
    SKIP(7);
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                   "Space required after 'ELEMENT'\n");
        return(-1);
    }
        name = xmlParseName(ctxt);
    if (name == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "xmlParseElementDecl: no name for Element\n");
        return(-1);
    }
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space required after the element name\n");
    }
    if (CMP5(CUR_PTR, 'E', 'M', 'P', 'T', 'Y')) {
        SKIP(5);
        /*
         * Element must always be empty.
         */
        ret = XML_ELEMENT_TYPE_EMPTY;
    } else if ((RAW == 'A') && (NXT(1) == 'N') &&
               (NXT(2) == 'Y')) {
        SKIP(3);
        /*
         * Element is a generic container.
         */
        ret = XML_ELEMENT_TYPE_ANY;
    } else if (RAW == '(') {
        ret = xmlParseElementContentDecl(ctxt, name, &content);
    } else {
        /*
         * [ WFC: PEs in Internal Subset ] error handling.
         */
        if ((RAW == '%') && (ctxt->external == 0) &&
            (ctxt->inputNr == 1)) {
        xmlFatalErrMsg(ctxt, XML_ERR_PEREF_IN_INT_SUBSET,
      "PEReference: forbidden within markup decl in internal subset\n");
        } else {
        xmlFatalErrMsg(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED,
              "xmlParseElementDecl: 'EMPTY', 'ANY' or '(' expected\n");
            }
        return(-1);
    }
 
    SKIP_BLANKS;
 
    if (RAW != '>') {
        xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL);
        if (content != NULL) {
        xmlFreeDocElementContent(ctxt->myDoc, content);
        }
    } else {
        if (inputid != ctxt->input->id) {
        xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "Element declaration doesn't start and stop in"
                               " the same entity\n");
        }
 
        NEXT;
        if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
        (ctxt->sax->elementDecl != NULL)) {
        if (content != NULL)
            content->parent = NULL;
            ctxt->sax->elementDecl(ctxt->userData, name, ret,
                               content);
        if ((content != NULL) && (content->parent == NULL)) {
            /*
             * this is a trick: if xmlAddElementDecl is called,
             * instead of copying the full tree it is plugged directly
             * if called from the parser. Avoid duplicating the
             * interfaces or change the API/ABI
             */
            xmlFreeDocElementContent(ctxt->myDoc, content);
        }
        } else if (content != NULL) {
        xmlFreeDocElementContent(ctxt->myDoc, content);
        }
    }
    }
    return(ret);
}
 
static void
xmlParseConditionalSections(xmlParserCtxtPtr ctxt) {
    int *inputIds = NULL;
    size_t inputIdsSize = 0;
    size_t depth = 0;
 
    while (ctxt->instate != XML_PARSER_EOF) {
        if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
            int id = ctxt->input->id;
 
            SKIP(3);
            SKIP_BLANKS;
 
            if (CMP7(CUR_PTR, 'I', 'N', 'C', 'L', 'U', 'D', 'E')) {
                SKIP(7);
                SKIP_BLANKS;
                if (RAW != '[') {
                    xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID, NULL);
                    xmlHaltParser(ctxt);
                    goto error;
                }
                if (ctxt->input->id != id) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                                   "All markup of the conditional section is"
                                   " not in the same entity\n");
                }
                NEXT;
 
                if (inputIdsSize <= depth) {
                    int *tmp;
 
                    inputIdsSize = (inputIdsSize == 0 ? 4 : inputIdsSize * 2);
                    tmp = (int *) xmlRealloc(inputIds,
                            inputIdsSize * sizeof(int));
                    if (tmp == NULL) {
                        xmlErrMemory(ctxt, NULL);
                        goto error;
                    }
                    inputIds = tmp;
                }
                inputIds[depth] = id;
                depth++;
            } else if (CMP6(CUR_PTR, 'I', 'G', 'N', 'O', 'R', 'E')) {
                size_t ignoreDepth = 0;
 
                SKIP(6);
                SKIP_BLANKS;
                if (RAW != '[') {
                    xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID, NULL);
                    xmlHaltParser(ctxt);
                    goto error;
                }
                if (ctxt->input->id != id) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                                   "All markup of the conditional section is"
                                   " not in the same entity\n");
                }
                NEXT;
 
                while (RAW != 0) {
                    if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
                        SKIP(3);
                        ignoreDepth++;
                        /* Check for integer overflow */
                        if (ignoreDepth == 0) {
                            xmlErrMemory(ctxt, NULL);
                            goto error;
                        }
                    } else if ((RAW == ']') && (NXT(1) == ']') &&
                               (NXT(2) == '>')) {
                        if (ignoreDepth == 0)
                            break;
                        SKIP(3);
                        ignoreDepth--;
                    } else {
                        NEXT;
                    }
                }
 
        if (RAW == 0) {
            xmlFatalErr(ctxt, XML_ERR_CONDSEC_NOT_FINISHED, NULL);
                    goto error;
        }
                if (ctxt->input->id != id) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                                   "All markup of the conditional section is"
                                   " not in the same entity\n");
                }
                SKIP(3);
            } else {
                xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID_KEYWORD, NULL);
                xmlHaltParser(ctxt);
                goto error;
            }
        } else if ((depth > 0) &&
                   (RAW == ']') && (NXT(1) == ']') && (NXT(2) == '>')) {
            depth--;
            if (ctxt->input->id != inputIds[depth]) {
                xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
                               "All markup of the conditional section is not"
                               " in the same entity\n");
            }
            SKIP(3);
        } else if ((RAW == '<') && ((NXT(1) == '!') || (NXT(1) == '?'))) {
            xmlParseMarkupDecl(ctxt);
        } else {
            xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL);
            xmlHaltParser(ctxt);
            goto error;
        }
 
        if (depth == 0)
            break;
 
        SKIP_BLANKS;
        SHRINK;
        GROW;
    }
 
error:
    xmlFree(inputIds);
}
 
void
xmlParseMarkupDecl(xmlParserCtxtPtr ctxt) {
    GROW;
    if (CUR == '<') {
        if (NXT(1) == '!') {
        switch (NXT(2)) {
            case 'E':
            if (NXT(3) == 'L')
            xmlParseElementDecl(ctxt);
            else if (NXT(3) == 'N')
            xmlParseEntityDecl(ctxt);
                    else
                        SKIP(2);
            break;
            case 'A':
            xmlParseAttributeListDecl(ctxt);
            break;
            case 'N':
            xmlParseNotationDecl(ctxt);
            break;
            case '-':
            xmlParseComment(ctxt);
            break;
        default:
            /* there is an error but it will be detected later */
                    SKIP(2);
            break;
        }
    } else if (NXT(1) == '?') {
        xmlParsePI(ctxt);
    }
    }
 
    /*
     * detect requirement to exit there and act accordingly
     * and avoid having instate overridden later on
     */
    if (ctxt->instate == XML_PARSER_EOF)
        return;
 
    ctxt->instate = XML_PARSER_DTD;
}
 
void
xmlParseTextDecl(xmlParserCtxtPtr ctxt) {
    xmlChar *version;
    int oldstate;
 
    /*
     * We know that '<?xml' is here.
     */
    if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
    SKIP(5);
    } else {
    xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_STARTED, NULL);
    return;
    }
 
    /* Avoid expansion of parameter entities when skipping blanks. */
    oldstate = ctxt->instate;
    ctxt->instate = XML_PARSER_START;
 
    if (SKIP_BLANKS == 0) {
    xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "Space needed after '<?xml'\n");
    }
 
    /*
     * We may have the VersionInfo here.
     */
    version = xmlParseVersionInfo(ctxt);
    if (version == NULL)
    version = xmlCharStrdup(XML_DEFAULT_VERSION);
    else {
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                   "Space needed here\n");
    }
    }
    ctxt->input->version = version;
 
    /*
     * We must have the encoding declaration
     */
    xmlParseEncodingDecl(ctxt);
    if (ctxt->instate == XML_PARSER_EOF)
        return;
    if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
    /*
     * The XML REC instructs us to stop parsing right here
     */
        ctxt->instate = oldstate;
        return;
    }
 
    SKIP_BLANKS;
    if ((RAW == '?') && (NXT(1) == '>')) {
        SKIP(2);
    } else if (RAW == '>') {
        /* Deprecated old WD ... */
    xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
    NEXT;
    } else {
        int c;
 
    xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
        while ((c = CUR) != 0) {
            NEXT;
            if (c == '>')
                break;
        }
    }
 
    if (ctxt->instate != XML_PARSER_EOF)
        ctxt->instate = oldstate;
}
 
void
xmlParseExternalSubset(xmlParserCtxtPtr ctxt, const xmlChar *ExternalID,
                       const xmlChar *SystemID) {
    xmlDetectSAX2(ctxt);
 
    xmlDetectEncoding(ctxt);
 
    if (CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) {
    xmlParseTextDecl(ctxt);
    if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
        /*
         * The XML REC instructs us to stop parsing right here
         */
        xmlHaltParser(ctxt);
        return;
    }
    }
    if (ctxt->myDoc == NULL) {
        ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0");
    if (ctxt->myDoc == NULL) {
        xmlErrMemory(ctxt, "New Doc failed");
        return;
    }
    ctxt->myDoc->properties = XML_DOC_INTERNAL;
    }
    if ((ctxt->myDoc != NULL) && (ctxt->myDoc->intSubset == NULL))
        xmlCreateIntSubset(ctxt->myDoc, NULL, ExternalID, SystemID);
 
    ctxt->instate = XML_PARSER_DTD;
    ctxt->external = 1;
    SKIP_BLANKS;
    while ((ctxt->instate != XML_PARSER_EOF) && (RAW != 0)) {
    GROW;
        if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
            xmlParseConditionalSections(ctxt);
        } else if ((RAW == '<') && ((NXT(1) == '!') || (NXT(1) == '?'))) {
            xmlParseMarkupDecl(ctxt);
        } else {
            xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL);
            xmlHaltParser(ctxt);
            return;
        }
        SKIP_BLANKS;
        SHRINK;
    }
 
    if (RAW != 0) {
    xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL);
    }
 
}
 
void
xmlParseReference(xmlParserCtxtPtr ctxt) {
    xmlEntityPtr ent;
    xmlChar *val;
    int was_checked;
    xmlNodePtr list = NULL;
    xmlParserErrors ret = XML_ERR_OK;
 
 
    if (RAW != '&')
        return;
 
    /*
     * Simple case of a CharRef
     */
    if (NXT(1) == '#') {
    int i = 0;
    xmlChar out[16];
    int value = xmlParseCharRef(ctxt);
 
    if (value == 0)
        return;
 
        /*
         * Just encode the value in UTF-8
         */
        COPY_BUF(out, i, value);
        out[i] = 0;
        if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) &&
            (!ctxt->disableSAX))
            ctxt->sax->characters(ctxt->userData, out, i);
    return;
    }
 
    /*
     * We are seeing an entity reference
     */
    ent = xmlParseEntityRef(ctxt);
    if (ent == NULL) return;
    if (!ctxt->wellFormed)
    return;
    was_checked = ent->flags & XML_ENT_PARSED;
 
    /* special case of predefined entities */
    if ((ent->name == NULL) ||
        (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
    val = ent->content;
    if (val == NULL) return;
    /*
     * inline the entity.
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) &&
        (!ctxt->disableSAX))
        ctxt->sax->characters(ctxt->userData, val, xmlStrlen(val));
    return;
    }
 
    /*
     * The first reference to the entity trigger a parsing phase
     * where the ent->children is filled with the result from
     * the parsing.
     * Note: external parsed entities will not be loaded, it is not
     * required for a non-validating parser, unless the parsing option
     * of validating, or substituting entities were given. Doing so is
     * far more secure as the parser will only process data coming from
     * the document entity by default.
     *
     * FIXME: This doesn't work correctly since entities can be
     * expanded with different namespace declarations in scope.
     * For example:
     *
     * <!DOCTYPE doc [
     *   <!ENTITY ent "<ns:elem/>">
     * ]>
     * <doc>
     *   <decl1 xmlns:ns="urn:ns1">
     *     &ent;
     *   </decl1>
     *   <decl2 xmlns:ns="urn:ns2">
     *     &ent;
     *   </decl2>
     * </doc>
     *
     * Proposed fix:
     *
     * - Remove the ent->owner optimization which tries to avoid the
     *   initial copy of the entity. Always make entities own the
     *   subtree.
     * - Ignore current namespace declarations when parsing the
     *   entity. If a prefix can't be resolved, don't report an error
     *   but mark it as unresolved.
     * - Try to resolve these prefixes when expanding the entity.
     *   This will require a specialized version of xmlStaticCopyNode
     *   which can also make use of the namespace hash table to avoid
     *   quadratic behavior.
     *
     * Alternatively, we could simply reparse the entity on each
     * expansion like we already do with custom SAX callbacks.
     * External entity content should be cached in this case.
     */
    if (((ent->flags & XML_ENT_PARSED) == 0) &&
        ((ent->etype != XML_EXTERNAL_GENERAL_PARSED_ENTITY) ||
         (ctxt->options & (XML_PARSE_NOENT | XML_PARSE_DTDVALID)))) {
    unsigned long oldsizeentcopy = ctxt->sizeentcopy;
 
    /*
     * This is a bit hackish but this seems the best
     * way to make sure both SAX and DOM entity support
     * behaves okay.
     */
    void *user_data;
    if (ctxt->userData == ctxt)
        user_data = NULL;
    else
        user_data = ctxt->userData;
 
        /* Avoid overflow as much as possible */
        ctxt->sizeentcopy = 0;
 
        if (ent->flags & XML_ENT_EXPANDING) {
            xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
            xmlHaltParser(ctxt);
            return;
        }
 
        ent->flags |= XML_ENT_EXPANDING;
 
    /*
     * Check that this entity is well formed
     * 4.3.2: An internal general parsed entity is well-formed
     * if its replacement text matches the production labeled
     * content.
     */
    if (ent->etype == XML_INTERNAL_GENERAL_ENTITY) {
        ctxt->depth++;
        ret = xmlParseBalancedChunkMemoryInternal(ctxt, ent->content,
                                                  user_data, &list);
        ctxt->depth--;
 
    } else if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY) {
        ctxt->depth++;
        ret = xmlParseExternalEntityPrivate(ctxt->myDoc, ctxt, ctxt->sax,
                                       user_data, ctxt->depth, ent->URI,
                       ent->ExternalID, &list);
        ctxt->depth--;
    } else {
        ret = XML_ERR_ENTITY_PE_INTERNAL;
        xmlErrMsgStr(ctxt, XML_ERR_INTERNAL_ERROR,
             "invalid entity type found\n", NULL);
    }
 
        ent->flags &= ~XML_ENT_EXPANDING;
        ent->flags |= XML_ENT_PARSED | XML_ENT_CHECKED;
        ent->expandedSize = ctxt->sizeentcopy;
    if (ret == XML_ERR_ENTITY_LOOP) {
            xmlHaltParser(ctxt);
        xmlFreeNodeList(list);
        return;
    }
    if (xmlParserEntityCheck(ctxt, oldsizeentcopy)) {
        xmlFreeNodeList(list);
        return;
    }
 
    if ((ret == XML_ERR_OK) && (list != NULL)) {
            ent->children = list;
            /*
             * Prune it directly in the generated document
             * except for single text nodes.
             */
            if ((ctxt->replaceEntities == 0) ||
                (ctxt->parseMode == XML_PARSE_READER) ||
                ((list->type == XML_TEXT_NODE) &&
                 (list->next == NULL))) {
                ent->owner = 1;
                while (list != NULL) {
                    list->parent = (xmlNodePtr) ent;
                    if (list->doc != ent->doc)
                        xmlSetTreeDoc(list, ent->doc);
                    if (list->next == NULL)
                        ent->last = list;
                    list = list->next;
                }
                list = NULL;
            } else {
                ent->owner = 0;
                while (list != NULL) {
                    list->parent = (xmlNodePtr) ctxt->node;
                    list->doc = ctxt->myDoc;
                    if (list->next == NULL)
                        ent->last = list;
                    list = list->next;
                }
                list = ent->children;
#ifdef LIBXML_LEGACY_ENABLED
                if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)
                    xmlAddEntityReference(ent, list, NULL);
#endif /* LIBXML_LEGACY_ENABLED */
            }
    } else if ((ret != XML_ERR_OK) &&
           (ret != XML_WAR_UNDECLARED_ENTITY)) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY,
             "Entity '%s' failed to parse\n", ent->name);
            if (ent->content != NULL)
                ent->content[0] = 0;
    } else if (list != NULL) {
        xmlFreeNodeList(list);
        list = NULL;
    }
 
        /* Prevent entity from being parsed and expanded twice (Bug 760367). */
        was_checked = 0;
    }
 
    /*
     * Now that the entity content has been gathered
     * provide it to the application, this can take different forms based
     * on the parsing modes.
     */
    if (ent->children == NULL) {
    /*
     * Probably running in SAX mode and the callbacks don't
     * build the entity content. So unless we already went
     * though parsing for first checking go though the entity
     * content to generate callbacks associated to the entity
     */
    if (was_checked != 0) {
        void *user_data;
        /*
         * This is a bit hackish but this seems the best
         * way to make sure both SAX and DOM entity support
         * behaves okay.
         */
        if (ctxt->userData == ctxt)
        user_data = NULL;
        else
        user_data = ctxt->userData;
 
        if (ent->etype == XML_INTERNAL_GENERAL_ENTITY) {
        ctxt->depth++;
        ret = xmlParseBalancedChunkMemoryInternal(ctxt,
                   ent->content, user_data, NULL);
        ctxt->depth--;
        } else if (ent->etype ==
               XML_EXTERNAL_GENERAL_PARSED_ENTITY) {
            unsigned long oldsizeentities = ctxt->sizeentities;
 
        ctxt->depth++;
        ret = xmlParseExternalEntityPrivate(ctxt->myDoc, ctxt,
               ctxt->sax, user_data, ctxt->depth,
               ent->URI, ent->ExternalID, NULL);
        ctxt->depth--;
 
                /* Undo the change to sizeentities */
                ctxt->sizeentities = oldsizeentities;
        } else {
        ret = XML_ERR_ENTITY_PE_INTERNAL;
        xmlErrMsgStr(ctxt, XML_ERR_INTERNAL_ERROR,
                 "invalid entity type found\n", NULL);
        }
        if (ret == XML_ERR_ENTITY_LOOP) {
        xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
        return;
        }
            if (xmlParserEntityCheck(ctxt, 0))
                return;
    }
    if ((ctxt->sax != NULL) && (ctxt->sax->reference != NULL) &&
        (ctxt->replaceEntities == 0) && (!ctxt->disableSAX)) {
        /*
         * Entity reference callback comes second, it's somewhat
         * superfluous but a compatibility to historical behaviour
         */
        ctxt->sax->reference(ctxt->userData, ent->name);
    }
    return;
    }
 
    /*
     * We also check for amplification if entities aren't substituted.
     * They might be expanded later.
     */
    if ((was_checked != 0) &&
        (xmlParserEntityCheck(ctxt, ent->expandedSize)))
        return;
 
    /*
     * If we didn't get any children for the entity being built
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->reference != NULL) &&
    (ctxt->replaceEntities == 0) && (!ctxt->disableSAX)) {
    /*
     * Create a node.
     */
    ctxt->sax->reference(ctxt->userData, ent->name);
    return;
    }
 
    if (ctxt->replaceEntities)  {
    /*
     * There is a problem on the handling of _private for entities
     * (bug 155816): Should we copy the content of the field from
     * the entity (possibly overwriting some value set by the user
     * when a copy is created), should we leave it alone, or should
     * we try to take care of different situations?  The problem
     * is exacerbated by the usage of this field by the xmlReader.
     * To fix this bug, we look at _private on the created node
     * and, if it's NULL, we copy in whatever was in the entity.
     * If it's not NULL we leave it alone.  This is somewhat of a
     * hack - maybe we should have further tests to determine
     * what to do.
     */
    if (ctxt->node != NULL) {
        /*
         * Seems we are generating the DOM content, do
         * a simple tree copy for all references except the first
         * In the first occurrence list contains the replacement.
         */
        if (((list == NULL) && (ent->owner == 0)) ||
        (ctxt->parseMode == XML_PARSE_READER)) {
        xmlNodePtr nw = NULL, cur, firstChild = NULL;
 
        /*
         * when operating on a reader, the entities definitions
         * are always owning the entities subtree.
        if (ctxt->parseMode == XML_PARSE_READER)
            ent->owner = 1;
         */
 
        cur = ent->children;
        while (cur != NULL) {
            nw = xmlDocCopyNode(cur, ctxt->myDoc, 1);
            if (nw != NULL) {
            if (nw->_private == NULL)
                nw->_private = cur->_private;
            if (firstChild == NULL){
                firstChild = nw;
            }
            nw = xmlAddChild(ctxt->node, nw);
            }
            if (cur == ent->last) {
            /*
             * needed to detect some strange empty
             * node cases in the reader tests
             */
            if ((ctxt->parseMode == XML_PARSE_READER) &&
                (nw != NULL) &&
                (nw->type == XML_ELEMENT_NODE) &&
                (nw->children == NULL))
                nw->extra = 1;
 
            break;
            }
            cur = cur->next;
        }
#ifdef LIBXML_LEGACY_ENABLED
        if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)
          xmlAddEntityReference(ent, firstChild, nw);
#endif /* LIBXML_LEGACY_ENABLED */
        } else if ((list == NULL) || (ctxt->inputNr > 0)) {
        xmlNodePtr nw = NULL, cur, next, last,
               firstChild = NULL;
 
        /*
         * Copy the entity child list and make it the new
         * entity child list. The goal is to make sure any
         * ID or REF referenced will be the one from the
         * document content and not the entity copy.
         */
        cur = ent->children;
        ent->children = NULL;
        last = ent->last;
        ent->last = NULL;
        while (cur != NULL) {
            next = cur->next;
            cur->next = NULL;
            cur->parent = NULL;
            nw = xmlDocCopyNode(cur, ctxt->myDoc, 1);
            if (nw != NULL) {
            if (nw->_private == NULL)
                nw->_private = cur->_private;
            if (firstChild == NULL){
                firstChild = cur;
            }
            xmlAddChild((xmlNodePtr) ent, nw);
            }
            xmlAddChild(ctxt->node, cur);
            if (cur == last)
            break;
            cur = next;
        }
        if (ent->owner == 0)
            ent->owner = 1;
#ifdef LIBXML_LEGACY_ENABLED
        if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)
          xmlAddEntityReference(ent, firstChild, nw);
#endif /* LIBXML_LEGACY_ENABLED */
        } else {
        const xmlChar *nbktext;
 
        /*
         * the name change is to avoid coalescing of the
         * node with a possible previous text one which
         * would make ent->children a dangling pointer
         */
        nbktext = xmlDictLookup(ctxt->dict, BAD_CAST "nbktext",
                    -1);
        if (ent->children->type == XML_TEXT_NODE)
            ent->children->name = nbktext;
        if ((ent->last != ent->children) &&
            (ent->last->type == XML_TEXT_NODE))
            ent->last->name = nbktext;
        xmlAddChildList(ctxt->node, ent->children);
        }
 
        /*
         * This is to avoid a nasty side effect, see
         * characters() in SAX.c
         */
        ctxt->nodemem = 0;
        ctxt->nodelen = 0;
        return;
    }
    }
}
 
xmlEntityPtr
xmlParseEntityRef(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
    xmlEntityPtr ent = NULL;
 
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        return(NULL);
 
    if (RAW != '&')
        return(NULL);
    NEXT;
    name = xmlParseName(ctxt);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "xmlParseEntityRef: no name\n");
        return(NULL);
    }
    if (RAW != ';') {
    xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL);
    return(NULL);
    }
    NEXT;
 
    /*
     * Predefined entities override any extra definition
     */
    if ((ctxt->options & XML_PARSE_OLDSAX) == 0) {
        ent = xmlGetPredefinedEntity(name);
        if (ent != NULL)
            return(ent);
    }
 
    /*
     * Ask first SAX for entity resolution, otherwise try the
     * entities which may have stored in the parser context.
     */
    if (ctxt->sax != NULL) {
    if (ctxt->sax->getEntity != NULL)
        ent = ctxt->sax->getEntity(ctxt->userData, name);
    if ((ctxt->wellFormed == 1 ) && (ent == NULL) &&
        (ctxt->options & XML_PARSE_OLDSAX))
        ent = xmlGetPredefinedEntity(name);
    if ((ctxt->wellFormed == 1 ) && (ent == NULL) &&
        (ctxt->userData==ctxt)) {
        ent = xmlSAX2GetEntity(ctxt, name);
    }
    }
    if (ctxt->instate == XML_PARSER_EOF)
    return(NULL);
    /*
     * [ WFC: Entity Declared ]
     * In a document without any DTD, a document with only an
     * internal DTD subset which contains no parameter entity
     * references, or a document with "standalone='yes'", the
     * Name given in the entity reference must match that in an
     * entity declaration, except that well-formed documents
     * need not declare any of the following entities: amp, lt,
     * gt, apos, quot.
     * The declaration of a parameter entity must precede any
     * reference to it.
     * Similarly, the declaration of a general entity must
     * precede any reference to it which appears in a default
     * value in an attribute-list declaration. Note that if
     * entities are declared in the external subset or in
     * external parameter entities, a non-validating processor
     * is not obligated to read and process their declarations;
     * for such documents, the rule that an entity must be
     * declared is a well-formedness constraint only if
     * standalone='yes'.
     */
    if (ent == NULL) {
    if ((ctxt->standalone == 1) ||
        ((ctxt->hasExternalSubset == 0) &&
         (ctxt->hasPErefs == 0))) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY,
             "Entity '%s' not defined\n", name);
    } else {
        xmlErrMsgStr(ctxt, XML_WAR_UNDECLARED_ENTITY,
             "Entity '%s' not defined\n", name);
        if ((ctxt->inSubset == 0) &&
        (ctxt->sax != NULL) &&
                (ctxt->disableSAX == 0) &&
        (ctxt->sax->reference != NULL)) {
        ctxt->sax->reference(ctxt->userData, name);
        }
    }
    ctxt->valid = 0;
    }
 
    /*
     * [ WFC: Parsed Entity ]
     * An entity reference must not contain the name of an
     * unparsed entity
     */
    else if (ent->etype == XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) {
    xmlFatalErrMsgStr(ctxt, XML_ERR_UNPARSED_ENTITY,
         "Entity reference to unparsed entity %s\n", name);
    }
 
    /*
     * [ WFC: No External Entity References ]
     * Attribute values cannot contain direct or indirect
     * entity references to external entities.
     */
    else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) &&
         (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)) {
    xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_EXTERNAL,
         "Attribute references external entity '%s'\n", name);
    }
    /*
     * [ WFC: No < in Attribute Values ]
     * The replacement text of any entity referred to directly or
     * indirectly in an attribute value (other than "&lt;") must
     * not contain a <.
     */
    else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) &&
         (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY)) {
    if ((ent->flags & XML_ENT_CHECKED_LT) == 0) {
            if ((ent->content != NULL) && (xmlStrchr(ent->content, '<')))
                ent->flags |= XML_ENT_CONTAINS_LT;
            ent->flags |= XML_ENT_CHECKED_LT;
        }
        if (ent->flags & XML_ENT_CONTAINS_LT)
            xmlFatalErrMsgStr(ctxt, XML_ERR_LT_IN_ATTRIBUTE,
                    "'<' in entity '%s' is not allowed in attributes "
                    "values\n", name);
    }
 
    /*
     * Internal check, no parameter entities here ...
     */
    else {
    switch (ent->etype) {
        case XML_INTERNAL_PARAMETER_ENTITY:
        case XML_EXTERNAL_PARAMETER_ENTITY:
        xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_PARAMETER,
         "Attempt to reference the parameter entity '%s'\n",
                  name);
        break;
        default:
        break;
    }
    }
 
    /*
     * [ WFC: No Recursion ]
     * A parsed entity must not contain a recursive reference
     * to itself, either directly or indirectly.
     * Done somewhere else
     */
    return(ent);
}
 
static xmlEntityPtr
xmlParseStringEntityRef(xmlParserCtxtPtr ctxt, const xmlChar ** str) {
    xmlChar *name;
    const xmlChar *ptr;
    xmlChar cur;
    xmlEntityPtr ent = NULL;
 
    if ((str == NULL) || (*str == NULL))
        return(NULL);
    ptr = *str;
    cur = *ptr;
    if (cur != '&')
    return(NULL);
 
    ptr++;
    name = xmlParseStringName(ctxt, &ptr);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "xmlParseStringEntityRef: no name\n");
    *str = ptr;
    return(NULL);
    }
    if (*ptr != ';') {
    xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL);
        xmlFree(name);
    *str = ptr;
    return(NULL);
    }
    ptr++;
 
 
    /*
     * Predefined entities override any extra definition
     */
    if ((ctxt->options & XML_PARSE_OLDSAX) == 0) {
        ent = xmlGetPredefinedEntity(name);
        if (ent != NULL) {
            xmlFree(name);
            *str = ptr;
            return(ent);
        }
    }
 
    /*
     * Ask first SAX for entity resolution, otherwise try the
     * entities which may have stored in the parser context.
     */
    if (ctxt->sax != NULL) {
    if (ctxt->sax->getEntity != NULL)
        ent = ctxt->sax->getEntity(ctxt->userData, name);
    if ((ent == NULL) && (ctxt->options & XML_PARSE_OLDSAX))
        ent = xmlGetPredefinedEntity(name);
    if ((ent == NULL) && (ctxt->userData==ctxt)) {
        ent = xmlSAX2GetEntity(ctxt, name);
    }
    }
    if (ctxt->instate == XML_PARSER_EOF) {
    xmlFree(name);
    return(NULL);
    }
 
    /*
     * [ WFC: Entity Declared ]
     * In a document without any DTD, a document with only an
     * internal DTD subset which contains no parameter entity
     * references, or a document with "standalone='yes'", the
     * Name given in the entity reference must match that in an
     * entity declaration, except that well-formed documents
     * need not declare any of the following entities: amp, lt,
     * gt, apos, quot.
     * The declaration of a parameter entity must precede any
     * reference to it.
     * Similarly, the declaration of a general entity must
     * precede any reference to it which appears in a default
     * value in an attribute-list declaration. Note that if
     * entities are declared in the external subset or in
     * external parameter entities, a non-validating processor
     * is not obligated to read and process their declarations;
     * for such documents, the rule that an entity must be
     * declared is a well-formedness constraint only if
     * standalone='yes'.
     */
    if (ent == NULL) {
    if ((ctxt->standalone == 1) ||
        ((ctxt->hasExternalSubset == 0) &&
         (ctxt->hasPErefs == 0))) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY,
             "Entity '%s' not defined\n", name);
    } else {
        xmlErrMsgStr(ctxt, XML_WAR_UNDECLARED_ENTITY,
              "Entity '%s' not defined\n",
              name);
    }
    /* TODO ? check regressions ctxt->valid = 0; */
    }
 
    /*
     * [ WFC: Parsed Entity ]
     * An entity reference must not contain the name of an
     * unparsed entity
     */
    else if (ent->etype == XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) {
    xmlFatalErrMsgStr(ctxt, XML_ERR_UNPARSED_ENTITY,
         "Entity reference to unparsed entity %s\n", name);
    }
 
    /*
     * [ WFC: No External Entity References ]
     * Attribute values cannot contain direct or indirect
     * entity references to external entities.
     */
    else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) &&
         (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)) {
    xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_EXTERNAL,
     "Attribute references external entity '%s'\n", name);
    }
    /*
     * [ WFC: No < in Attribute Values ]
     * The replacement text of any entity referred to directly or
     * indirectly in an attribute value (other than "&lt;") must
     * not contain a <.
     */
    else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) &&
         (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY)) {
    if ((ent->flags & XML_ENT_CHECKED_LT) == 0) {
            if ((ent->content != NULL) && (xmlStrchr(ent->content, '<')))
                ent->flags |= XML_ENT_CONTAINS_LT;
            ent->flags |= XML_ENT_CHECKED_LT;
        }
        if (ent->flags & XML_ENT_CONTAINS_LT)
            xmlFatalErrMsgStr(ctxt, XML_ERR_LT_IN_ATTRIBUTE,
                    "'<' in entity '%s' is not allowed in attributes "
                    "values\n", name);
    }
 
    /*
     * Internal check, no parameter entities here ...
     */
    else {
    switch (ent->etype) {
        case XML_INTERNAL_PARAMETER_ENTITY:
        case XML_EXTERNAL_PARAMETER_ENTITY:
        xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_PARAMETER,
         "Attempt to reference the parameter entity '%s'\n",
                  name);
        break;
        default:
        break;
    }
    }
 
    /*
     * [ WFC: No Recursion ]
     * A parsed entity must not contain a recursive reference
     * to itself, either directly or indirectly.
     * Done somewhere else
     */
 
    xmlFree(name);
    *str = ptr;
    return(ent);
}
 
void
xmlParsePEReference(xmlParserCtxtPtr ctxt)
{
    const xmlChar *name;
    xmlEntityPtr entity = NULL;
    xmlParserInputPtr input;
 
    if (RAW != '%')
        return;
    NEXT;
    name = xmlParseName(ctxt);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_PEREF_NO_NAME, "PEReference: no name\n");
    return;
    }
    if (xmlParserDebugEntities)
    xmlGenericError(xmlGenericErrorContext,
        "PEReference: %s\n", name);
    if (RAW != ';') {
    xmlFatalErr(ctxt, XML_ERR_PEREF_SEMICOL_MISSING, NULL);
        return;
    }
 
    NEXT;
 
    /*
     * Request the entity from SAX
     */
    if ((ctxt->sax != NULL) &&
    (ctxt->sax->getParameterEntity != NULL))
    entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
    if (ctxt->instate == XML_PARSER_EOF)
    return;
    if (entity == NULL) {
    /*
     * [ WFC: Entity Declared ]
     * In a document without any DTD, a document with only an
     * internal DTD subset which contains no parameter entity
     * references, or a document with "standalone='yes'", ...
     * ... The declaration of a parameter entity must precede
     * any reference to it...
     */
    if ((ctxt->standalone == 1) ||
        ((ctxt->hasExternalSubset == 0) &&
         (ctxt->hasPErefs == 0))) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY,
                  "PEReference: %%%s; not found\n",
                  name);
    } else {
        /*
         * [ VC: Entity Declared ]
         * In a document with an external subset or external
         * parameter entities with "standalone='no'", ...
         * ... The declaration of a parameter entity must
         * precede any reference to it...
         */
            if ((ctxt->validate) && (ctxt->vctxt.error != NULL)) {
                xmlValidityError(ctxt, XML_WAR_UNDECLARED_ENTITY,
                                 "PEReference: %%%s; not found\n",
                                 name, NULL);
            } else
                xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
                              "PEReference: %%%s; not found\n",
                              name, NULL);
            ctxt->valid = 0;
    }
    } else {
    /*
     * Internal checking in case the entity quest barfed
     */
    if ((entity->etype != XML_INTERNAL_PARAMETER_ENTITY) &&
        (entity->etype != XML_EXTERNAL_PARAMETER_ENTITY)) {
        xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
          "Internal: %%%s; is not a parameter entity\n",
              name, NULL);
    } else {
            unsigned long parentConsumed;
            xmlEntityPtr oldEnt;
 
        if ((entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) &&
            ((ctxt->options & XML_PARSE_NOENT) == 0) &&
        ((ctxt->options & XML_PARSE_DTDVALID) == 0) &&
        ((ctxt->options & XML_PARSE_DTDLOAD) == 0) &&
        ((ctxt->options & XML_PARSE_DTDATTR) == 0) &&
        (ctxt->replaceEntities == 0) &&
        (ctxt->validate == 0))
        return;
 
            if (entity->flags & XML_ENT_EXPANDING) {
                xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
                xmlHaltParser(ctxt);
                return;
            }
 
            /* Must be computed from old input before pushing new input. */
            parentConsumed = ctxt->input->parentConsumed;
            oldEnt = ctxt->input->entity;
            if ((oldEnt == NULL) ||
                ((oldEnt->etype == XML_EXTERNAL_PARAMETER_ENTITY) &&
                 ((oldEnt->flags & XML_ENT_PARSED) == 0))) {
                xmlSaturatedAdd(&parentConsumed, ctxt->input->consumed);
                xmlSaturatedAddSizeT(&parentConsumed,
                                     ctxt->input->cur - ctxt->input->base);
            }
 
        input = xmlNewEntityInputStream(ctxt, entity);
        if (xmlPushInput(ctxt, input) < 0) {
                xmlFreeInputStream(input);
        return;
            }
 
            entity->flags |= XML_ENT_EXPANDING;
 
            input->parentConsumed = parentConsumed;
 
        if (entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) {
                xmlDetectEncoding(ctxt);
 
                if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) &&
                    (IS_BLANK_CH(NXT(5)))) {
                    xmlParseTextDecl(ctxt);
                }
            }
    }
    }
    ctxt->hasPErefs = 1;
}
 
static int
xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity) {
    xmlParserInputPtr oldinput, input = NULL;
    xmlParserInputPtr *oldinputTab;
    const xmlChar *oldencoding;
    xmlChar *content = NULL;
    size_t length, i;
    int oldinputNr, oldinputMax, oldprogressive;
    int ret = -1;
    int res;
 
    if ((ctxt == NULL) || (entity == NULL) ||
        ((entity->etype != XML_EXTERNAL_PARAMETER_ENTITY) &&
     (entity->etype != XML_EXTERNAL_GENERAL_PARSED_ENTITY)) ||
    (entity->content != NULL)) {
    xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
                "xmlLoadEntityContent parameter error");
        return(-1);
    }
 
    if (xmlParserDebugEntities)
    xmlGenericError(xmlGenericErrorContext,
        "Reading %s entity content input\n", entity->name);
 
    input = xmlLoadExternalEntity((char *) entity->URI,
           (char *) entity->ExternalID, ctxt);
    if (input == NULL) {
    xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
                "xmlLoadEntityContent input error");
        return(-1);
    }
 
    oldinput = ctxt->input;
    oldinputNr = ctxt->inputNr;
    oldinputMax = ctxt->inputMax;
    oldinputTab = ctxt->inputTab;
    oldencoding = ctxt->encoding;
    oldprogressive = ctxt->progressive;
 
    ctxt->input = NULL;
    ctxt->inputNr = 0;
    ctxt->inputMax = 1;
    ctxt->encoding = NULL;
    ctxt->progressive = 0;
    ctxt->inputTab = xmlMalloc(sizeof(xmlParserInputPtr));
    if (ctxt->inputTab == NULL) {
        xmlErrMemory(ctxt, NULL);
        xmlFreeInputStream(input);
        goto error;
    }
 
    xmlBufResetInput(input->buf->buffer, input);
 
    inputPush(ctxt, input);
 
    xmlDetectEncoding(ctxt);
 
    /*
     * Parse a possible text declaration first
     */
    if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
    xmlParseTextDecl(ctxt);
        /*
         * An XML-1.0 document can't reference an entity not XML-1.0
         */
        if ((xmlStrEqual(ctxt->version, BAD_CAST "1.0")) &&
            (!xmlStrEqual(ctxt->input->version, BAD_CAST "1.0"))) {
            xmlFatalErrMsg(ctxt, XML_ERR_VERSION_MISMATCH,
                           "Version mismatch between document and entity\n");
        }
    }
 
    if (ctxt->instate == XML_PARSER_EOF)
        goto error;
 
    length = input->cur - input->base;
    xmlBufShrink(input->buf->buffer, length);
    xmlSaturatedAdd(&ctxt->sizeentities, length);
 
    while ((res = xmlParserInputBufferGrow(input->buf, 4096)) > 0)
        ;
 
    xmlBufResetInput(input->buf->buffer, input);
 
    if (res < 0) {
        xmlFatalErr(ctxt, input->buf->error, NULL);
        goto error;
    }
 
    length = xmlBufUse(input->buf->buffer);
    content = xmlBufDetach(input->buf->buffer);
 
    if (length > INT_MAX) {
        xmlErrMemory(ctxt, NULL);
        goto error;
    }
 
    for (i = 0; i < length; ) {
        int clen = length - i;
        int c = xmlGetUTF8Char(content + i, &clen);
 
        if ((c < 0) || (!IS_CHAR(c))) {
            xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
                              "xmlLoadEntityContent: invalid char value %d\n",
                              content[i]);
            goto error;
        }
        i += clen;
    }
 
    xmlSaturatedAdd(&ctxt->sizeentities, length);
    entity->content = content;
    entity->length = length;
    content = NULL;
    ret = 0;
 
error:
    while (ctxt->inputNr > 0)
        xmlFreeInputStream(inputPop(ctxt));
    xmlFree(ctxt->inputTab);
    xmlFree((xmlChar *) ctxt->encoding);
 
    ctxt->input = oldinput;
    ctxt->inputNr = oldinputNr;
    ctxt->inputMax = oldinputMax;
    ctxt->inputTab = oldinputTab;
    ctxt->encoding = oldencoding;
    ctxt->progressive = oldprogressive;
 
    xmlFree(content);
 
    return(ret);
}
 
static xmlEntityPtr
xmlParseStringPEReference(xmlParserCtxtPtr ctxt, const xmlChar **str) {
    const xmlChar *ptr;
    xmlChar cur;
    xmlChar *name;
    xmlEntityPtr entity = NULL;
 
    if ((str == NULL) || (*str == NULL)) return(NULL);
    ptr = *str;
    cur = *ptr;
    if (cur != '%')
        return(NULL);
    ptr++;
    name = xmlParseStringName(ctxt, &ptr);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "xmlParseStringPEReference: no name\n");
    *str = ptr;
    return(NULL);
    }
    cur = *ptr;
    if (cur != ';') {
    xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL);
    xmlFree(name);
    *str = ptr;
    return(NULL);
    }
    ptr++;
 
    /*
     * Request the entity from SAX
     */
    if ((ctxt->sax != NULL) &&
    (ctxt->sax->getParameterEntity != NULL))
    entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
    if (ctxt->instate == XML_PARSER_EOF) {
    xmlFree(name);
    *str = ptr;
    return(NULL);
    }
    if (entity == NULL) {
    /*
     * [ WFC: Entity Declared ]
     * In a document without any DTD, a document with only an
     * internal DTD subset which contains no parameter entity
     * references, or a document with "standalone='yes'", ...
     * ... The declaration of a parameter entity must precede
     * any reference to it...
     */
    if ((ctxt->standalone == 1) ||
        ((ctxt->hasExternalSubset == 0) && (ctxt->hasPErefs == 0))) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY,
         "PEReference: %%%s; not found\n", name);
    } else {
        /*
         * [ VC: Entity Declared ]
         * In a document with an external subset or external
         * parameter entities with "standalone='no'", ...
         * ... The declaration of a parameter entity must
         * precede any reference to it...
         */
        xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
              "PEReference: %%%s; not found\n",
              name, NULL);
        ctxt->valid = 0;
    }
    } else {
    /*
     * Internal checking in case the entity quest barfed
     */
    if ((entity->etype != XML_INTERNAL_PARAMETER_ENTITY) &&
        (entity->etype != XML_EXTERNAL_PARAMETER_ENTITY)) {
        xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
              "%%%s; is not a parameter entity\n",
              name, NULL);
    }
    }
    ctxt->hasPErefs = 1;
    xmlFree(name);
    *str = ptr;
    return(entity);
}
 
void
xmlParseDocTypeDecl(xmlParserCtxtPtr ctxt) {
    const xmlChar *name = NULL;
    xmlChar *ExternalID = NULL;
    xmlChar *URI = NULL;
 
    /*
     * We know that '<!DOCTYPE' has been detected.
     */
    SKIP(9);
 
    SKIP_BLANKS;
 
    /*
     * Parse the DOCTYPE name.
     */
    name = xmlParseName(ctxt);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "xmlParseDocTypeDecl : no DOCTYPE name !\n");
    }
    ctxt->intSubName = name;
 
    SKIP_BLANKS;
 
    /*
     * Check for SystemID and ExternalID
     */
    URI = xmlParseExternalID(ctxt, &ExternalID, 1);
 
    if ((URI != NULL) || (ExternalID != NULL)) {
        ctxt->hasExternalSubset = 1;
    }
    ctxt->extSubURI = URI;
    ctxt->extSubSystem = ExternalID;
 
    SKIP_BLANKS;
 
    /*
     * Create and update the internal subset.
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
    (!ctxt->disableSAX))
    ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
    if (ctxt->instate == XML_PARSER_EOF)
    return;
 
    /*
     * Is there any internal subset declarations ?
     * they are handled separately in xmlParseInternalSubset()
     */
    if (RAW == '[')
    return;
 
    /*
     * We should be at the end of the DOCTYPE declaration.
     */
    if (RAW != '>') {
    xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL);
    }
    NEXT;
}
 
static void
xmlParseInternalSubset(xmlParserCtxtPtr ctxt) {
    /*
     * Is there any DTD definition ?
     */
    if (RAW == '[') {
        int baseInputNr = ctxt->inputNr;
        ctxt->instate = XML_PARSER_DTD;
        NEXT;
    /*
     * Parse the succession of Markup declarations and
     * PEReferences.
     * Subsequence (markupdecl | PEReference | S)*
     */
    SKIP_BLANKS;
    while (((RAW != ']') || (ctxt->inputNr > baseInputNr)) &&
               (ctxt->instate != XML_PARSER_EOF)) {
 
            /*
             * Conditional sections are allowed from external entities included
             * by PE References in the internal subset.
             */
            if ((ctxt->inputNr > 1) && (ctxt->input->filename != NULL) &&
                (RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
                xmlParseConditionalSections(ctxt);
            } else if ((RAW == '<') && ((NXT(1) == '!') || (NXT(1) == '?'))) {
            xmlParseMarkupDecl(ctxt);
            } else if (RAW == '%') {
            xmlParsePEReference(ctxt);
            } else {
        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
                        "xmlParseInternalSubset: error detected in"
                        " Markup declaration\n");
                xmlHaltParser(ctxt);
                return;
            }
        SKIP_BLANKS;
            SHRINK;
            GROW;
    }
    if (RAW == ']') {
        NEXT;
        SKIP_BLANKS;
    }
    }
 
    /*
     * We should be at the end of the DOCTYPE declaration.
     */
    if (RAW != '>') {
    xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL);
    return;
    }
    NEXT;
}
 
#ifdef LIBXML_SAX1_ENABLED
const xmlChar *
xmlParseAttribute(xmlParserCtxtPtr ctxt, xmlChar **value) {
    const xmlChar *name;
    xmlChar *val;
 
    *value = NULL;
    GROW;
    name = xmlParseName(ctxt);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
                   "error parsing attribute name\n");
        return(NULL);
    }
 
    /*
     * read the value
     */
    SKIP_BLANKS;
    if (RAW == '=') {
        NEXT;
    SKIP_BLANKS;
    val = xmlParseAttValue(ctxt);
    ctxt->instate = XML_PARSER_CONTENT;
    } else {
    xmlFatalErrMsgStr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
           "Specification mandates value for attribute %s\n", name);
    return(name);
    }
 
    /*
     * Check that xml:lang conforms to the specification
     * No more registered as an error, just generate a warning now
     * since this was deprecated in XML second edition
     */
    if ((ctxt->pedantic) && (xmlStrEqual(name, BAD_CAST "xml:lang"))) {
    if (!xmlCheckLanguageID(val)) {
        xmlWarningMsg(ctxt, XML_WAR_LANG_VALUE,
                  "Malformed value for xml:lang : %s\n",
              val, NULL);
    }
    }
 
    /*
     * Check that xml:space conforms to the specification
     */
    if (xmlStrEqual(name, BAD_CAST "xml:space")) {
    if (xmlStrEqual(val, BAD_CAST "default"))
        *(ctxt->space) = 0;
    else if (xmlStrEqual(val, BAD_CAST "preserve"))
        *(ctxt->space) = 1;
    else {
        xmlWarningMsg(ctxt, XML_WAR_SPACE_VALUE,
"Invalid value \"%s\" for xml:space : \"default\" or \"preserve\" expected\n",
                                 val, NULL);
    }
    }
 
    *value = val;
    return(name);
}
 
const xmlChar *
xmlParseStartTag(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
    const xmlChar *attname;
    xmlChar *attvalue;
    const xmlChar **atts = ctxt->atts;
    int nbatts = 0;
    int maxatts = ctxt->maxatts;
    int i;
 
    if (RAW != '<') return(NULL);
    NEXT1;
 
    name = xmlParseName(ctxt);
    if (name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
         "xmlParseStartTag: invalid element name\n");
        return(NULL);
    }
 
    /*
     * Now parse the attributes, it ends up with the ending
     *
     * (S Attribute)* S?
     */
    SKIP_BLANKS;
    GROW;
 
    while (((RAW != '>') &&
       ((RAW != '/') || (NXT(1) != '>')) &&
       (IS_BYTE_CHAR(RAW))) && (ctxt->instate != XML_PARSER_EOF)) {
    attname = xmlParseAttribute(ctxt, &attvalue);
        if (attname == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
               "xmlParseStartTag: problem parsing attributes\n");
        break;
    }
        if (attvalue != NULL) {
        /*
         * [ WFC: Unique Att Spec ]
         * No attribute name may appear more than once in the same
         * start-tag or empty-element tag.
         */
        for (i = 0; i < nbatts;i += 2) {
            if (xmlStrEqual(atts[i], attname)) {
            xmlErrAttributeDup(ctxt, NULL, attname);
            xmlFree(attvalue);
            goto failed;
        }
        }
        /*
         * Add the pair to atts
         */
        if (atts == NULL) {
            maxatts = 22; /* allow for 10 attrs by default */
            atts = (const xmlChar **)
               xmlMalloc(maxatts * sizeof(xmlChar *));
        if (atts == NULL) {
            xmlErrMemory(ctxt, NULL);
            if (attvalue != NULL)
            xmlFree(attvalue);
            goto failed;
        }
        ctxt->atts = atts;
        ctxt->maxatts = maxatts;
        } else if (nbatts + 4 > maxatts) {
            const xmlChar **n;
 
            maxatts *= 2;
            n = (const xmlChar **) xmlRealloc((void *) atts,
                         maxatts * sizeof(const xmlChar *));
        if (n == NULL) {
            xmlErrMemory(ctxt, NULL);
            if (attvalue != NULL)
            xmlFree(attvalue);
            goto failed;
        }
        atts = n;
        ctxt->atts = atts;
        ctxt->maxatts = maxatts;
        }
        atts[nbatts++] = attname;
        atts[nbatts++] = attvalue;
        atts[nbatts] = NULL;
        atts[nbatts + 1] = NULL;
    } else {
        if (attvalue != NULL)
        xmlFree(attvalue);
    }
 
failed:
 
    GROW
    if ((RAW == '>') || (((RAW == '/') && (NXT(1) == '>'))))
        break;
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "attributes construct error\n");
    }
    SHRINK;
        GROW;
    }
 
    /*
     * SAX: Start of Element !
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL) &&
    (!ctxt->disableSAX)) {
    if (nbatts > 0)
        ctxt->sax->startElement(ctxt->userData, name, atts);
    else
        ctxt->sax->startElement(ctxt->userData, name, NULL);
    }
 
    if (atts != NULL) {
        /* Free only the content strings */
        for (i = 1;i < nbatts;i+=2)
        if (atts[i] != NULL)
           xmlFree((xmlChar *) atts[i]);
    }
    return(name);
}
 
static void
xmlParseEndTag1(xmlParserCtxtPtr ctxt, int line) {
    const xmlChar *name;
 
    GROW;
    if ((RAW != '<') || (NXT(1) != '/')) {
    xmlFatalErrMsg(ctxt, XML_ERR_LTSLASH_REQUIRED,
               "xmlParseEndTag: '</' not found\n");
    return;
    }
    SKIP(2);
 
    name = xmlParseNameAndCompare(ctxt,ctxt->name);
 
    /*
     * We should definitely be at the ending "S? '>'" part
     */
    GROW;
    SKIP_BLANKS;
    if ((!IS_BYTE_CHAR(RAW)) || (RAW != '>')) {
    xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL);
    } else
    NEXT1;
 
    /*
     * [ WFC: Element Type Match ]
     * The Name in an element's end-tag must match the element type in the
     * start-tag.
     *
     */
    if (name != (xmlChar*)1) {
        if (name == NULL) name = BAD_CAST "unparsable";
        xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
             "Opening and ending tag mismatch: %s line %d and %s\n",
                        ctxt->name, line, name);
    }
 
    /*
     * SAX: End of Tag
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL) &&
    (!ctxt->disableSAX))
        ctxt->sax->endElement(ctxt->userData, ctxt->name);
 
    namePop(ctxt);
    spacePop(ctxt);
    return;
}
 
void
xmlParseEndTag(xmlParserCtxtPtr ctxt) {
    xmlParseEndTag1(ctxt, 0);
}
#endif /* LIBXML_SAX1_ENABLED */
 
/************************************************************************
 *                                  *
 *            SAX 2 specific operations             *
 *                                  *
 ************************************************************************/
 
static xmlHashedString
xmlParseQNameHashed(xmlParserCtxtPtr ctxt, xmlHashedString *prefix) {
    xmlHashedString l, p;
    int start, isNCName = 0;
 
    l.name = NULL;
    p.name = NULL;
 
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        return(l);
    start = CUR_PTR - BASE_PTR;
 
    l = xmlParseNCName(ctxt);
    if (l.name != NULL) {
        isNCName = 1;
        if (CUR == ':') {
            NEXT;
            p = l;
            l = xmlParseNCName(ctxt);
        }
    }
    if ((l.name == NULL) || (CUR == ':')) {
        xmlChar *tmp;
 
        l.name = NULL;
        p.name = NULL;
        if (ctxt->instate == XML_PARSER_EOF)
            return(l);
        if ((isNCName == 0) && (CUR != ':'))
            return(l);
        tmp = xmlParseNmtoken(ctxt);
        if (tmp != NULL)
            xmlFree(tmp);
        if (ctxt->instate == XML_PARSER_EOF)
            return(l);
        l = xmlDictLookupHashed(ctxt->dict, BASE_PTR + start,
                                CUR_PTR - (BASE_PTR + start));
        xmlNsErr(ctxt, XML_NS_ERR_QNAME,
                 "Failed to parse QName '%s'\n", l.name, NULL, NULL);
    }
 
    *prefix = p;
    return(l);
}
 
static const xmlChar *
xmlParseQName(xmlParserCtxtPtr ctxt, const xmlChar **prefix) {
    xmlHashedString n, p;
 
    n = xmlParseQNameHashed(ctxt, &p);
    if (n.name == NULL)
        return(NULL);
    *prefix = p.name;
    return(n.name);
}
 
static const xmlChar *
xmlParseQNameAndCompare(xmlParserCtxtPtr ctxt, xmlChar const *name,
                        xmlChar const *prefix) {
    const xmlChar *cmp;
    const xmlChar *in;
    const xmlChar *ret;
    const xmlChar *prefix2;
 
    if (prefix == NULL) return(xmlParseNameAndCompare(ctxt, name));
 
    GROW;
    in = ctxt->input->cur;
 
    cmp = prefix;
    while (*in != 0 && *in == *cmp) {
    ++in;
    ++cmp;
    }
    if ((*cmp == 0) && (*in == ':')) {
        in++;
    cmp = name;
    while (*in != 0 && *in == *cmp) {
        ++in;
        ++cmp;
    }
    if (*cmp == 0 && (*in == '>' || IS_BLANK_CH (*in))) {
        /* success */
            ctxt->input->col += in - ctxt->input->cur;
        ctxt->input->cur = in;
        return((const xmlChar*) 1);
    }
    }
    /*
     * all strings coms from the dictionary, equality can be done directly
     */
    ret = xmlParseQName (ctxt, &prefix2);
    if (ret == NULL)
        return(NULL);
    if ((ret == name) && (prefix == prefix2))
    return((const xmlChar*) 1);
    return ret;
}
 
#define GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end) \
    const xmlChar *oldbase = ctxt->input->base;\
    GROW;\
    if (ctxt->instate == XML_PARSER_EOF)\
        return(NULL);\
    if (oldbase != ctxt->input->base) {\
        ptrdiff_t delta = ctxt->input->base - oldbase;\
        start = start + delta;\
        in = in + delta;\
    }\
    end = ctxt->input->end;
 
static xmlChar *
xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
                         int normalize)
{
    xmlChar limit = 0;
    const xmlChar *in = NULL, *start, *end, *last;
    xmlChar *ret = NULL;
    int line, col;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_HUGE_LENGTH :
                    XML_MAX_TEXT_LENGTH;
 
    GROW;
    in = (xmlChar *) CUR_PTR;
    line = ctxt->input->line;
    col = ctxt->input->col;
    if (*in != '"' && *in != '\'') {
        xmlFatalErr(ctxt, XML_ERR_ATTRIBUTE_NOT_STARTED, NULL);
        return (NULL);
    }
    ctxt->instate = XML_PARSER_ATTRIBUTE_VALUE;
 
    /*
     * try to handle in this routine the most common case where no
     * allocation of a new string is required and where content is
     * pure ASCII.
     */
    limit = *in++;
    col++;
    end = ctxt->input->end;
    start = in;
    if (in >= end) {
        GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end)
    }
    if (normalize) {
        /*
     * Skip any leading spaces
     */
    while ((in < end) && (*in != limit) &&
           ((*in == 0x20) || (*in == 0x9) ||
            (*in == 0xA) || (*in == 0xD))) {
        if (*in == 0xA) {
            line++; col = 1;
        } else {
            col++;
        }
        in++;
        start = in;
        if (in >= end) {
                GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end)
                if ((in - start) > maxLength) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                                   "AttValue length too long\n");
                    return(NULL);
                }
        }
    }
    while ((in < end) && (*in != limit) && (*in >= 0x20) &&
           (*in <= 0x7f) && (*in != '&') && (*in != '<')) {
        col++;
        if ((*in++ == 0x20) && (*in == 0x20)) break;
        if (in >= end) {
                GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end)
                if ((in - start) > maxLength) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                                   "AttValue length too long\n");
                    return(NULL);
                }
        }
    }
    last = in;
    /*
     * skip the trailing blanks
     */
    while ((last[-1] == 0x20) && (last > start)) last--;
    while ((in < end) && (*in != limit) &&
           ((*in == 0x20) || (*in == 0x9) ||
            (*in == 0xA) || (*in == 0xD))) {
        if (*in == 0xA) {
            line++, col = 1;
        } else {
            col++;
        }
        in++;
        if (in >= end) {
        const xmlChar *oldbase = ctxt->input->base;
        GROW;
                if (ctxt->instate == XML_PARSER_EOF)
                    return(NULL);
        if (oldbase != ctxt->input->base) {
            ptrdiff_t delta = ctxt->input->base - oldbase;
            start = start + delta;
            in = in + delta;
            last = last + delta;
        }
        end = ctxt->input->end;
                if ((in - start) > maxLength) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                                   "AttValue length too long\n");
                    return(NULL);
                }
        }
    }
        if ((in - start) > maxLength) {
            xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                           "AttValue length too long\n");
            return(NULL);
        }
    if (*in != limit) goto need_complex;
    } else {
    while ((in < end) && (*in != limit) && (*in >= 0x20) &&
           (*in <= 0x7f) && (*in != '&') && (*in != '<')) {
        in++;
        col++;
        if (in >= end) {
                GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end)
                if ((in - start) > maxLength) {
                    xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                                   "AttValue length too long\n");
                    return(NULL);
                }
        }
    }
    last = in;
        if ((in - start) > maxLength) {
            xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
                           "AttValue length too long\n");
            return(NULL);
        }
    if (*in != limit) goto need_complex;
    }
    in++;
    col++;
    if (len != NULL) {
        if (alloc) *alloc = 0;
        *len = last - start;
        ret = (xmlChar *) start;
    } else {
        if (alloc) *alloc = 1;
        ret = xmlStrndup(start, last - start);
    }
    CUR_PTR = in;
    ctxt->input->line = line;
    ctxt->input->col = col;
    return ret;
need_complex:
    if (alloc) *alloc = 1;
    return xmlParseAttValueComplex(ctxt, len, normalize);
}
 
static xmlHashedString
xmlParseAttribute2(xmlParserCtxtPtr ctxt,
                   const xmlChar * pref, const xmlChar * elem,
                   xmlHashedString * hprefix, xmlChar ** value,
                   int *len, int *alloc)
{
    xmlHashedString hname;
    const xmlChar *prefix, *name;
    xmlChar *val, *internal_val = NULL;
    int normalize = 0;
 
    *value = NULL;
    GROW;
    hname = xmlParseQNameHashed(ctxt, hprefix);
    if (hname.name == NULL) {
        xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
                       "error parsing attribute name\n");
        return(hname);
    }
    name = hname.name;
    if (hprefix->name != NULL)
        prefix = hprefix->name;
    else
        prefix = NULL;
 
    /*
     * get the type if needed
     */
    if (ctxt->attsSpecial != NULL) {
        int type;
 
        type = (int) (ptrdiff_t) xmlHashQLookup2(ctxt->attsSpecial,
                                                 pref, elem,
                                                 prefix, name);
        if (type != 0)
            normalize = 1;
    }
 
    /*
     * read the value
     */
    SKIP_BLANKS;
    if (RAW == '=') {
        NEXT;
        SKIP_BLANKS;
        val = xmlParseAttValueInternal(ctxt, len, alloc, normalize);
        if (val == NULL) {
            hname.name = NULL;
            return(hname);
        }
    if (normalize) {
        /*
         * Sometimes a second normalisation pass for spaces is needed
         * but that only happens if charrefs or entities references
         * have been used in the attribute value, i.e. the attribute
         * value have been extracted in an allocated string already.
         */
        if (*alloc) {
            const xmlChar *val2;
 
            val2 = xmlAttrNormalizeSpace2(ctxt, val, len);
        if ((val2 != NULL) && (val2 != val)) {
            xmlFree(val);
            val = (xmlChar *) val2;
        }
        }
    }
        ctxt->instate = XML_PARSER_CONTENT;
    } else {
        xmlFatalErrMsgStr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
                          "Specification mandates value for attribute %s\n",
                          name);
        return(hname);
    }
 
    if (prefix == ctxt->str_xml) {
        /*
         * Check that xml:lang conforms to the specification
         * No more registered as an error, just generate a warning now
         * since this was deprecated in XML second edition
         */
        if ((ctxt->pedantic) && (xmlStrEqual(name, BAD_CAST "lang"))) {
            internal_val = xmlStrndup(val, *len);
            if (!xmlCheckLanguageID(internal_val)) {
                xmlWarningMsg(ctxt, XML_WAR_LANG_VALUE,
                              "Malformed value for xml:lang : %s\n",
                              internal_val, NULL);
            }
        }
 
        /*
         * Check that xml:space conforms to the specification
         */
        if (xmlStrEqual(name, BAD_CAST "space")) {
            internal_val = xmlStrndup(val, *len);
            if (xmlStrEqual(internal_val, BAD_CAST "default"))
                *(ctxt->space) = 0;
            else if (xmlStrEqual(internal_val, BAD_CAST "preserve"))
                *(ctxt->space) = 1;
            else {
                xmlWarningMsg(ctxt, XML_WAR_SPACE_VALUE,
                              "Invalid value \"%s\" for xml:space : \"default\" or \"preserve\" expected\n",
                              internal_val, NULL);
            }
        }
        if (internal_val) {
            xmlFree(internal_val);
        }
    }
 
    *value = val;
    return (hname);
}
 
static int
xmlAttrHashInsert(xmlParserCtxtPtr ctxt, unsigned size, const xmlChar *name,
                  const xmlChar *uri, unsigned hashValue, int aindex) {
    xmlAttrHashBucket *table = ctxt->attrHash;
    xmlAttrHashBucket *bucket;
    unsigned hindex;
 
    hindex = hashValue & (size - 1);
    bucket = &table[hindex];
 
    while (bucket->index >= 0) {
        const xmlChar **atts = &ctxt->atts[bucket->index];
 
        if (name == atts[0]) {
            int nsIndex = (int) (ptrdiff_t) atts[2];
 
            if ((nsIndex == NS_INDEX_EMPTY) ? (uri == NULL) :
                (nsIndex == NS_INDEX_XML) ? (uri == ctxt->str_xml_ns) :
                (uri == ctxt->nsTab[nsIndex * 2 + 1]))
                return(bucket->index);
        }
 
        hindex++;
        bucket++;
        if (hindex >= size) {
            hindex = 0;
            bucket = table;
        }
    }
 
    bucket->index = aindex;
 
    return(INT_MAX);
}
 
static const xmlChar *
xmlParseStartTag2(xmlParserCtxtPtr ctxt, const xmlChar **pref,
                  const xmlChar **URI, int *nbNsPtr) {
    xmlHashedString hlocalname;
    xmlHashedString hprefix;
    xmlHashedString hattname;
    xmlHashedString haprefix;
    const xmlChar *localname;
    const xmlChar *prefix;
    const xmlChar *attname;
    const xmlChar *aprefix;
    const xmlChar *uri;
    xmlChar *attvalue = NULL;
    const xmlChar **atts = ctxt->atts;
    unsigned attrHashSize = 0;
    int maxatts = ctxt->maxatts;
    int nratts, nbatts, nbdef, inputid;
    int i, j, nbNs, nbTotalDef, attval, nsIndex, maxAtts;
    int alloc = 0;
 
    if (RAW != '<') return(NULL);
    NEXT1;
 
    inputid = ctxt->input->id;
    nbatts = 0;
    nratts = 0;
    nbdef = 0;
    nbNs = 0;
    nbTotalDef = 0;
    attval = 0;
 
    if (xmlParserNsStartElement(ctxt->nsdb) < 0) {
        xmlErrMemory(ctxt, NULL);
        return(NULL);
    }
 
    hlocalname = xmlParseQNameHashed(ctxt, &hprefix);
    if (hlocalname.name == NULL) {
    xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
               "StartTag: invalid element name\n");
        return(NULL);
    }
    localname = hlocalname.name;
    prefix = hprefix.name;
 
    /*
     * Now parse the attributes, it ends up with the ending
     *
     * (S Attribute)* S?
     */
    SKIP_BLANKS;
    GROW;
 
    /*
     * The ctxt->atts array will be ultimately passed to the SAX callback
     * containing five xmlChar pointers for each attribute:
     *
     * [0] attribute name
     * [1] attribute prefix
     * [2] namespace URI
     * [3] attribute value
     * [4] end of attribute value
     *
     * To save memory, we reuse this array temporarily and store integers
     * in these pointer variables.
     *
     * [0] attribute name
     * [1] attribute prefix
     * [2] hash value of attribute prefix, and later namespace index
     * [3] for non-allocated values: ptrdiff_t offset into input buffer
     * [4] for non-allocated values: ptrdiff_t offset into input buffer
     *
     * The ctxt->attallocs array contains an additional unsigned int for
     * each attribute, containing the hash value of the attribute name
     * and the alloc flag in bit 31.
     */
 
    while (((RAW != '>') &&
       ((RAW != '/') || (NXT(1) != '>')) &&
       (IS_BYTE_CHAR(RAW))) && (ctxt->instate != XML_PARSER_EOF)) {
    int len = -1;
 
    hattname = xmlParseAttribute2(ctxt, prefix, localname,
                                          &haprefix, &attvalue, &len,
                                          &alloc);
        if (hattname.name == NULL) {
        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
             "xmlParseStartTag: problem parsing attributes\n");
        break;
    }
        if (attvalue == NULL)
            goto next_attr;
        attname = hattname.name;
        aprefix = haprefix.name;
    if (len < 0) len = xmlStrlen(attvalue);
 
        if ((attname == ctxt->str_xmlns) && (aprefix == NULL)) {
            xmlHashedString huri;
            xmlURIPtr parsedUri;
 
            huri = xmlDictLookupHashed(ctxt->dict, attvalue, len);
            uri = huri.name;
            if (uri == NULL) {
                xmlErrMemory(ctxt, NULL);
                goto next_attr;
            }
            if (*uri != 0) {
                parsedUri = xmlParseURI((const char *) uri);
                if (parsedUri == NULL) {
                    xmlNsErr(ctxt, XML_WAR_NS_URI,
                             "xmlns: '%s' is not a valid URI\n",
                                       uri, NULL, NULL);
                } else {
                    if (parsedUri->scheme == NULL) {
                        xmlNsWarn(ctxt, XML_WAR_NS_URI_RELATIVE,
                                  "xmlns: URI %s is not absolute\n",
                                  uri, NULL, NULL);
                    }
                    xmlFreeURI(parsedUri);
                }
                if (uri == ctxt->str_xml_ns) {
                    if (attname != ctxt->str_xml) {
                        xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                     "xml namespace URI cannot be the default namespace\n",
                                 NULL, NULL, NULL);
                    }
                    goto next_attr;
                }
                if ((len == 29) &&
                    (xmlStrEqual(uri,
                             BAD_CAST "http://www.w3.org/2000/xmlns/"))) {
                    xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                         "reuse of the xmlns namespace name is forbidden\n",
                             NULL, NULL, NULL);
                    goto next_attr;
                }
            }
 
            if (xmlParserNsPush(ctxt, NULL, &huri, NULL, 0) > 0)
                nbNs++;
        } else if (aprefix == ctxt->str_xmlns) {
            xmlHashedString huri;
            xmlURIPtr parsedUri;
 
            huri = xmlDictLookupHashed(ctxt->dict, attvalue, len);
            uri = huri.name;
            if (uri == NULL) {
                xmlErrMemory(ctxt, NULL);
                goto next_attr;
            }
 
            if (attname == ctxt->str_xml) {
                if (uri != ctxt->str_xml_ns) {
                    xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                             "xml namespace prefix mapped to wrong URI\n",
                             NULL, NULL, NULL);
                }
                /*
                 * Do not keep a namespace definition node
                 */
                goto next_attr;
            }
            if (uri == ctxt->str_xml_ns) {
                if (attname != ctxt->str_xml) {
                    xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                             "xml namespace URI mapped to wrong prefix\n",
                             NULL, NULL, NULL);
                }
                goto next_attr;
            }
            if (attname == ctxt->str_xmlns) {
                xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                         "redefinition of the xmlns prefix is forbidden\n",
                         NULL, NULL, NULL);
                goto next_attr;
            }
            if ((len == 29) &&
                (xmlStrEqual(uri,
                             BAD_CAST "http://www.w3.org/2000/xmlns/"))) {
                xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                         "reuse of the xmlns namespace name is forbidden\n",
                         NULL, NULL, NULL);
                goto next_attr;
            }
            if ((uri == NULL) || (uri[0] == 0)) {
                xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
                         "xmlns:%s: Empty XML namespace is not allowed\n",
                              attname, NULL, NULL);
                goto next_attr;
            } else {
                parsedUri = xmlParseURI((const char *) uri);
                if (parsedUri == NULL) {
                    xmlNsErr(ctxt, XML_WAR_NS_URI,
                         "xmlns:%s: '%s' is not a valid URI\n",
                                       attname, uri, NULL);
                } else {
                    if ((ctxt->pedantic) && (parsedUri->scheme == NULL)) {
                        xmlNsWarn(ctxt, XML_WAR_NS_URI_RELATIVE,
                                  "xmlns:%s: URI %s is not absolute\n",
                                  attname, uri, NULL);
                    }
                    xmlFreeURI(parsedUri);
                }
            }
 
            if (xmlParserNsPush(ctxt, &hattname, &huri, NULL, 0) > 0)
                nbNs++;
        } else {
            /*
             * Populate attributes array, see above for repurposing
             * of xmlChar pointers.
             */
            if ((atts == NULL) || (nbatts + 5 > maxatts)) {
                if (xmlCtxtGrowAttrs(ctxt, nbatts + 5) < 0) {
                    goto next_attr;
                }
                maxatts = ctxt->maxatts;
                atts = ctxt->atts;
            }
            ctxt->attallocs[nratts++] = (hattname.hashValue & 0x7FFFFFFF) |
                                        ((unsigned) alloc << 31);
            atts[nbatts++] = attname;
            atts[nbatts++] = aprefix;
            atts[nbatts++] = (const xmlChar *) (size_t) haprefix.hashValue;
            if (alloc) {
                atts[nbatts++] = attvalue;
                attvalue += len;
                atts[nbatts++] = attvalue;
            } else {
                /*
                 * attvalue points into the input buffer which can be
                 * reallocated. Store differences to input->base instead.
                 * The pointers will be reconstructed later.
                 */
                atts[nbatts++] = (void *) (attvalue - BASE_PTR);
                attvalue += len;
                atts[nbatts++] = (void *) (attvalue - BASE_PTR);
            }
            /*
             * tag if some deallocation is needed
             */
            if (alloc != 0) attval = 1;
            attvalue = NULL; /* moved into atts */
        }
 
next_attr:
        if ((attvalue != NULL) && (alloc != 0)) {
            xmlFree(attvalue);
            attvalue = NULL;
        }
 
    GROW
        if (ctxt->instate == XML_PARSER_EOF)
            break;
    if ((RAW == '>') || (((RAW == '/') && (NXT(1) == '>'))))
        break;
    if (SKIP_BLANKS == 0) {
        xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
               "attributes construct error\n");
        break;
    }
        GROW;
    }
 
    if (ctxt->input->id != inputid) {
        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
                    "Unexpected change of input\n");
        localname = NULL;
        goto done;
    }
 
    /*
     * Namespaces from default attributes
     */
    if (ctxt->attsDefault != NULL) {
        xmlDefAttrsPtr defaults;
 
    defaults = xmlHashLookup2(ctxt->attsDefault, localname, prefix);
    if (defaults != NULL) {
        for (i = 0; i < defaults->nbAttrs; i++) {
                xmlDefAttr *attr = &defaults->attrs[i];
 
            attname = attr->name.name;
        aprefix = attr->prefix.name;
 
        if ((attname == ctxt->str_xmlns) && (aprefix == NULL)) {
                    xmlParserEntityCheck(ctxt, attr->expandedSize);
 
                    if (xmlParserNsPush(ctxt, NULL, &attr->value, NULL, 1) > 0)
                        nbNs++;
        } else if (aprefix == ctxt->str_xmlns) {
                    xmlParserEntityCheck(ctxt, attr->expandedSize);
 
                    if (xmlParserNsPush(ctxt, &attr->name, &attr->value,
                                      NULL, 1) > 0)
                        nbNs++;
        } else {
                    nbTotalDef += 1;
                }
        }
    }
    }
 
    /*
     * Resolve attribute namespaces
     */
    for (i = 0; i < nbatts; i += 5) {
        attname = atts[i];
        aprefix = atts[i+1];
 
        /*
    * The default namespace does not apply to attribute names.
    */
    if (aprefix == NULL) {
            nsIndex = NS_INDEX_EMPTY;
        } else if (aprefix == ctxt->str_xml) {
            nsIndex = NS_INDEX_XML;
        } else {
            haprefix.name = aprefix;
            haprefix.hashValue = (size_t) atts[i+2];
            nsIndex = xmlParserNsLookup(ctxt, &haprefix, NULL);
        if (nsIndex == INT_MAX) {
                xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE,
            "Namespace prefix %s for %s on %s is not defined\n",
            aprefix, attname, localname);
                nsIndex = NS_INDEX_EMPTY;
            }
        }
 
        atts[i+2] = (const xmlChar *) (ptrdiff_t) nsIndex;
    }
 
    /*
     * Maximum number of attributes including default attributes.
     */
    maxAtts = nratts + nbTotalDef;
 
    /*
     * Verify that attribute names are unique.
     */
    if (maxAtts > 1) {
        attrHashSize = 4;
        while (attrHashSize / 2 < (unsigned) maxAtts)
            attrHashSize *= 2;
 
        if (attrHashSize > ctxt->attrHashMax) {
            xmlAttrHashBucket *tmp;
 
            tmp = xmlRealloc(ctxt->attrHash, attrHashSize * sizeof(tmp[0]));
            if (tmp == NULL) {
                xmlErrMemory(ctxt, NULL);
                goto done;
            }
 
            ctxt->attrHash = tmp;
            ctxt->attrHashMax = attrHashSize;
        }
 
        memset(ctxt->attrHash, -1, attrHashSize * sizeof(ctxt->attrHash[0]));
 
        for (i = 0, j = 0; j < nratts; i += 5, j++) {
            const xmlChar *nsuri;
            unsigned hashValue, nameHashValue, uriHashValue;
            int res;
 
            attname = atts[i];
            aprefix = atts[i+1];
            nsIndex = (ptrdiff_t) atts[i+2];
            /* Hash values always have bit 31 set, see dict.c */
            nameHashValue = ctxt->attallocs[j] | 0x80000000;
 
            if (nsIndex == NS_INDEX_EMPTY) {
                nsuri = NULL;
                uriHashValue = URI_HASH_EMPTY;
            } else if (nsIndex == NS_INDEX_XML) {
                nsuri = ctxt->str_xml_ns;
                uriHashValue = URI_HASH_XML;
            } else {
                nsuri = ctxt->nsTab[nsIndex * 2 + 1];
                uriHashValue = ctxt->nsdb->extra[nsIndex].uriHashValue;
            }
 
            hashValue = xmlDictCombineHash(nameHashValue, uriHashValue);
            res = xmlAttrHashInsert(ctxt, attrHashSize, attname, nsuri,
                                    hashValue, i);
            if (res < 0)
                continue;
 
            /*
             * [ WFC: Unique Att Spec ]
             * No attribute name may appear more than once in the same
             * start-tag or empty-element tag.
             * As extended by the Namespace in XML REC.
             */
            if (res < INT_MAX) {
                if (aprefix == atts[res+1]) {
                    xmlErrAttributeDup(ctxt, aprefix, attname);
                } else {
                    xmlNsErr(ctxt, XML_NS_ERR_ATTRIBUTE_REDEFINED,
                             "Namespaced Attribute %s in '%s' redefined\n",
                             attname, nsuri, NULL);
                }
            }
        }
    }
 
    /*
     * Default attributes
     */
    if (ctxt->attsDefault != NULL) {
        xmlDefAttrsPtr defaults;
 
    defaults = xmlHashLookup2(ctxt->attsDefault, localname, prefix);
    if (defaults != NULL) {
        for (i = 0; i < defaults->nbAttrs; i++) {
                xmlDefAttr *attr = &defaults->attrs[i];
                const xmlChar *nsuri;
                unsigned hashValue, uriHashValue;
                int res;
 
            attname = attr->name.name;
        aprefix = attr->prefix.name;
 
        if ((attname == ctxt->str_xmlns) && (aprefix == NULL))
                    continue;
        if (aprefix == ctxt->str_xmlns)
                    continue;
 
                if (aprefix == NULL) {
                    nsIndex = NS_INDEX_EMPTY;
                    nsuri = NULL;
                    uriHashValue = URI_HASH_EMPTY;
                } if (aprefix == ctxt->str_xml) {
                    nsIndex = NS_INDEX_XML;
                    nsuri = ctxt->str_xml_ns;
                    uriHashValue = URI_HASH_XML;
                } else if (aprefix != NULL) {
                    nsIndex = xmlParserNsLookup(ctxt, &attr->prefix, NULL);
                    if (nsIndex == INT_MAX) {
                        xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE,
                                 "Namespace prefix %s for %s on %s is not "
                                 "defined\n",
                                 aprefix, attname, localname);
                        nsIndex = NS_INDEX_EMPTY;
                        nsuri = NULL;
                        uriHashValue = URI_HASH_EMPTY;
                    } else {
                        nsuri = ctxt->nsTab[nsIndex * 2 + 1];
                        uriHashValue = ctxt->nsdb->extra[nsIndex].uriHashValue;
                    }
                }
 
                /*
                 * Check whether the attribute exists
                 */
                if (maxAtts > 1) {
                    hashValue = xmlDictCombineHash(attr->name.hashValue,
                                                   uriHashValue);
                    res = xmlAttrHashInsert(ctxt, attrHashSize, attname, nsuri,
                                            hashValue, nbatts);
                    if (res < 0)
                        continue;
                    if (res < INT_MAX) {
                        if (aprefix == atts[res+1])
                            continue;
                        xmlNsErr(ctxt, XML_NS_ERR_ATTRIBUTE_REDEFINED,
                                 "Namespaced Attribute %s in '%s' redefined\n",
                                 attname, nsuri, NULL);
                    }
                }
 
                xmlParserEntityCheck(ctxt, attr->expandedSize);
 
                if ((atts == NULL) || (nbatts + 5 > maxatts)) {
                    if (xmlCtxtGrowAttrs(ctxt, nbatts + 5) < 0) {
                        localname = NULL;
                        goto done;
                    }
                    maxatts = ctxt->maxatts;
                    atts = ctxt->atts;
                }
 
                atts[nbatts++] = attname;
                atts[nbatts++] = aprefix;
                atts[nbatts++] = (const xmlChar *) (ptrdiff_t) nsIndex;
                atts[nbatts++] = attr->value.name;
                atts[nbatts++] = attr->valueEnd;
                if ((ctxt->standalone == 1) && (attr->external != 0)) {
                    xmlValidityError(ctxt, XML_DTD_STANDALONE_DEFAULTED,
                            "standalone: attribute %s on %s defaulted "
                            "from external subset\n",
                            attname, localname);
                }
                nbdef++;
        }
    }
    }
 
    /*
     * Reconstruct attribute pointers
     */
    for (i = 0, j = 0; i < nbatts; i += 5, j++) {
        /* namespace URI */
        nsIndex = (ptrdiff_t) atts[i+2];
        if (nsIndex == INT_MAX)
            atts[i+2] = NULL;
        else if (nsIndex == INT_MAX - 1)
            atts[i+2] = ctxt->str_xml_ns;
        else
            atts[i+2] = ctxt->nsTab[nsIndex * 2 + 1];
 
        if ((j < nratts) && (ctxt->attallocs[j] & 0x80000000) == 0) {
            atts[i+3] = BASE_PTR + (ptrdiff_t) atts[i+3];  /* value */
            atts[i+4] = BASE_PTR + (ptrdiff_t) atts[i+4];  /* valuend */
        }
    }
 
    uri = xmlParserNsLookupUri(ctxt, &hprefix);
    if ((prefix != NULL) && (uri == NULL)) {
    xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE,
             "Namespace prefix %s on %s is not defined\n",
         prefix, localname, NULL);
    }
    *pref = prefix;
    *URI = uri;
 
    /*
     * SAX callback
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->startElementNs != NULL) &&
    (!ctxt->disableSAX)) {
    if (nbNs > 0)
        ctxt->sax->startElementNs(ctxt->userData, localname, prefix, uri,
                          nbNs, ctxt->nsTab + 2 * (ctxt->nsNr - nbNs),
              nbatts / 5, nbdef, atts);
    else
        ctxt->sax->startElementNs(ctxt->userData, localname, prefix, uri,
                          0, NULL, nbatts / 5, nbdef, atts);
    }
 
done:
    /*
     * Free allocated attribute values
     */
    if (attval != 0) {
    for (i = 0, j = 0; j < nratts; i += 5, j++)
        if (ctxt->attallocs[j] & 0x80000000)
            xmlFree((xmlChar *) atts[i+3]);
    }
 
    *nbNsPtr = nbNs;
    return(localname);
}
 
static void
xmlParseEndTag2(xmlParserCtxtPtr ctxt, const xmlStartTag *tag) {
    const xmlChar *name;
 
    GROW;
    if ((RAW != '<') || (NXT(1) != '/')) {
    xmlFatalErr(ctxt, XML_ERR_LTSLASH_REQUIRED, NULL);
    return;
    }
    SKIP(2);
 
    if (tag->prefix == NULL)
        name = xmlParseNameAndCompare(ctxt, ctxt->name);
    else
        name = xmlParseQNameAndCompare(ctxt, ctxt->name, tag->prefix);
 
    /*
     * We should definitely be at the ending "S? '>'" part
     */
    GROW;
    if (ctxt->instate == XML_PARSER_EOF)
        return;
    SKIP_BLANKS;
    if ((!IS_BYTE_CHAR(RAW)) || (RAW != '>')) {
    xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL);
    } else
    NEXT1;
 
    /*
     * [ WFC: Element Type Match ]
     * The Name in an element's end-tag must match the element type in the
     * start-tag.
     *
     */
    if (name != (xmlChar*)1) {
        if (name == NULL) name = BAD_CAST "unparsable";
        xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
             "Opening and ending tag mismatch: %s line %d and %s\n",
                        ctxt->name, tag->line, name);
    }
 
    /*
     * SAX: End of Tag
     */
    if ((ctxt->sax != NULL) && (ctxt->sax->endElementNs != NULL) &&
    (!ctxt->disableSAX))
    ctxt->sax->endElementNs(ctxt->userData, ctxt->name, tag->prefix,
                                tag->URI);
 
    spacePop(ctxt);
    if (tag->nsNr != 0)
    xmlParserNsPop(ctxt, tag->nsNr);
}
 
void
xmlParseCDSect(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = XML_PARSER_BUFFER_SIZE;
    int r, rl;
    int s, sl;
    int cur, l;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_HUGE_LENGTH :
                    XML_MAX_TEXT_LENGTH;
 
    if ((CUR != '<') || (NXT(1) != '!') || (NXT(2) != '['))
        return;
    SKIP(3);
 
    if (!CMP6(CUR_PTR, 'C', 'D', 'A', 'T', 'A', '['))
        return;
    SKIP(6);
 
    ctxt->instate = XML_PARSER_CDATA_SECTION;
    r = CUR_CHAR(rl);
    if (!IS_CHAR(r)) {
    xmlFatalErr(ctxt, XML_ERR_CDATA_NOT_FINISHED, NULL);
        goto out;
    }
    NEXTL(rl);
    s = CUR_CHAR(sl);
    if (!IS_CHAR(s)) {
    xmlFatalErr(ctxt, XML_ERR_CDATA_NOT_FINISHED, NULL);
        goto out;
    }
    NEXTL(sl);
    cur = CUR_CHAR(l);
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
    xmlErrMemory(ctxt, NULL);
        goto out;
    }
    while (IS_CHAR(cur) &&
           ((r != ']') || (s != ']') || (cur != '>'))) {
    if (len + 5 >= size) {
        xmlChar *tmp;
 
        tmp = (xmlChar *) xmlRealloc(buf, size * 2);
        if (tmp == NULL) {
        xmlErrMemory(ctxt, NULL);
                goto out;
        }
        buf = tmp;
        size *= 2;
    }
    COPY_BUF(buf, len, r);
        if (len > maxLength) {
            xmlFatalErrMsg(ctxt, XML_ERR_CDATA_NOT_FINISHED,
                           "CData section too big found\n");
            goto out;
        }
    r = s;
    rl = sl;
    s = cur;
    sl = l;
    NEXTL(l);
    cur = CUR_CHAR(l);
    }
    buf[len] = 0;
    if (ctxt->instate == XML_PARSER_EOF) {
        xmlFree(buf);
        return;
    }
    if (cur != '>') {
    xmlFatalErrMsgStr(ctxt, XML_ERR_CDATA_NOT_FINISHED,
                         "CData section not finished\n%.50s\n", buf);
        goto out;
    }
    NEXTL(l);
 
    /*
     * OK the buffer is to be consumed as cdata.
     */
    if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
    if (ctxt->sax->cdataBlock != NULL)
        ctxt->sax->cdataBlock(ctxt->userData, buf, len);
    else if (ctxt->sax->characters != NULL)
        ctxt->sax->characters(ctxt->userData, buf, len);
    }
 
out:
    if (ctxt->instate != XML_PARSER_EOF)
        ctxt->instate = XML_PARSER_CONTENT;
    xmlFree(buf);
}
 
static void
xmlParseContentInternal(xmlParserCtxtPtr ctxt) {
    int nameNr = ctxt->nameNr;
 
    GROW;
    while ((ctxt->input->cur < ctxt->input->end) &&
       (ctxt->instate != XML_PARSER_EOF)) {
    const xmlChar *cur = ctxt->input->cur;
 
    /*
     * First case : a Processing Instruction.
     */
    if ((*cur == '<') && (cur[1] == '?')) {
        xmlParsePI(ctxt);
    }
 
    /*
     * Second case : a CDSection
     */
    /* 2.6.0 test was *cur not RAW */
    else if (CMP9(CUR_PTR, '<', '!', '[', 'C', 'D', 'A', 'T', 'A', '[')) {
        xmlParseCDSect(ctxt);
    }
 
    /*
     * Third case :  a comment
     */
    else if ((*cur == '<') && (NXT(1) == '!') &&
         (NXT(2) == '-') && (NXT(3) == '-')) {
        xmlParseComment(ctxt);
        ctxt->instate = XML_PARSER_CONTENT;
    }
 
    /*
     * Fourth case :  a sub-element.
     */
    else if (*cur == '<') {
            if (NXT(1) == '/') {
                if (ctxt->nameNr <= nameNr)
                    break;
            xmlParseElementEnd(ctxt);
            } else {
            xmlParseElementStart(ctxt);
            }
    }
 
    /*
     * Fifth case : a reference. If if has not been resolved,
     *    parsing returns it's Name, create the node
     */
 
    else if (*cur == '&') {
        xmlParseReference(ctxt);
    }
 
    /*
     * Last case, text. Note that References are handled directly.
     */
    else {
        xmlParseCharDataInternal(ctxt, 0);
    }
 
    SHRINK;
    GROW;
    }
}
 
void
xmlParseContent(xmlParserCtxtPtr ctxt) {
    int nameNr = ctxt->nameNr;
 
    xmlParseContentInternal(ctxt);
 
    if ((ctxt->instate != XML_PARSER_EOF) &&
        (ctxt->errNo == XML_ERR_OK) &&
        (ctxt->nameNr > nameNr)) {
        const xmlChar *name = ctxt->nameTab[ctxt->nameNr - 1];
        int line = ctxt->pushTab[ctxt->nameNr - 1].line;
        xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
                "Premature end of data in tag %s line %d\n",
        name, line, NULL);
    }
}
 
void
xmlParseElement(xmlParserCtxtPtr ctxt) {
    if (xmlParseElementStart(ctxt) != 0)
        return;
 
    xmlParseContentInternal(ctxt);
    if (ctxt->instate == XML_PARSER_EOF)
    return;
 
    if (ctxt->input->cur >= ctxt->input->end) {
        if (ctxt->errNo == XML_ERR_OK) {
            const xmlChar *name = ctxt->nameTab[ctxt->nameNr - 1];
            int line = ctxt->pushTab[ctxt->nameNr - 1].line;
            xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
                    "Premature end of data in tag %s line %d\n",
                    name, line, NULL);
        }
        return;
    }
 
    xmlParseElementEnd(ctxt);
}
 
static int
xmlParseElementStart(xmlParserCtxtPtr ctxt) {
    const xmlChar *name;
    const xmlChar *prefix = NULL;
    const xmlChar *URI = NULL;
    xmlParserNodeInfo node_info;
    int line;
    xmlNodePtr cur;
    int nbNs = 0;
 
    if (((unsigned int) ctxt->nameNr > xmlParserMaxDepth) &&
        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
    xmlFatalErrMsgInt(ctxt, XML_ERR_INTERNAL_ERROR,
         "Excessive depth in document: %d use XML_PARSE_HUGE option\n",
              xmlParserMaxDepth);
    xmlHaltParser(ctxt);
    return(-1);
    }
 
    /* Capture start position */
    if (ctxt->record_info) {
        node_info.begin_pos = ctxt->input->consumed +
                          (CUR_PTR - ctxt->input->base);
    node_info.begin_line = ctxt->input->line;
    }
 
    if (ctxt->spaceNr == 0)
    spacePush(ctxt, -1);
    else if (*ctxt->space == -2)
    spacePush(ctxt, -1);
    else
    spacePush(ctxt, *ctxt->space);
 
    line = ctxt->input->line;
#ifdef LIBXML_SAX1_ENABLED
    if (ctxt->sax2)
#endif /* LIBXML_SAX1_ENABLED */
        name = xmlParseStartTag2(ctxt, &prefix, &URI, &nbNs);
#ifdef LIBXML_SAX1_ENABLED
    else
    name = xmlParseStartTag(ctxt);
#endif /* LIBXML_SAX1_ENABLED */
    if (ctxt->instate == XML_PARSER_EOF)
    return(-1);
    if (name == NULL) {
    spacePop(ctxt);
        return(-1);
    }
    nameNsPush(ctxt, name, prefix, URI, line, nbNs);
    cur = ctxt->node;
 
#ifdef LIBXML_VALID_ENABLED
    /*
     * [ VC: Root Element Type ]
     * The Name in the document type declaration must match the element
     * type of the root element.
     */
    if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc &&
        ctxt->node && (ctxt->node == ctxt->myDoc->children))
        ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc);
#endif /* LIBXML_VALID_ENABLED */
 
    /*
     * Check for an Empty Element.
     */
    if ((RAW == '/') && (NXT(1) == '>')) {
        SKIP(2);
    if (ctxt->sax2) {
        if ((ctxt->sax != NULL) && (ctxt->sax->endElementNs != NULL) &&
        (!ctxt->disableSAX))
        ctxt->sax->endElementNs(ctxt->userData, name, prefix, URI);
#ifdef LIBXML_SAX1_ENABLED
    } else {
        if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL) &&
        (!ctxt->disableSAX))
        ctxt->sax->endElement(ctxt->userData, name);
#endif /* LIBXML_SAX1_ENABLED */
    }
    namePop(ctxt);
    spacePop(ctxt);
    if (nbNs > 0)
        xmlParserNsPop(ctxt, nbNs);
    if (cur != NULL && ctxt->record_info) {
            node_info.node = cur;
            node_info.end_pos = ctxt->input->consumed +
                                (CUR_PTR - ctxt->input->base);
            node_info.end_line = ctxt->input->line;
            xmlParserAddNodeInfo(ctxt, &node_info);
    }
    return(1);
    }
    if (RAW == '>') {
        NEXT1;
        if (cur != NULL && ctxt->record_info) {
            node_info.node = cur;
            node_info.end_pos = 0;
            node_info.end_line = 0;
            xmlParserAddNodeInfo(ctxt, &node_info);
        }
    } else {
        xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_GT_REQUIRED,
             "Couldn't find end of Start Tag %s line %d\n",
                        name, line, NULL);
 
    /*
     * end of parsing of this node.
     */
    nodePop(ctxt);
    namePop(ctxt);
    spacePop(ctxt);
    if (nbNs > 0)
        xmlParserNsPop(ctxt, nbNs);
    return(-1);
    }
 
    return(0);
}
 
static void
xmlParseElementEnd(xmlParserCtxtPtr ctxt) {
    xmlNodePtr cur = ctxt->node;
 
    if (ctxt->nameNr <= 0) {
        if ((RAW == '<') && (NXT(1) == '/'))
            SKIP(2);
        return;
    }
 
    /*
     * parse the end of tag: '</' should be here.
     */
    if (ctxt->sax2) {
    xmlParseEndTag2(ctxt, &ctxt->pushTab[ctxt->nameNr - 1]);
    namePop(ctxt);
    }
#ifdef LIBXML_SAX1_ENABLED
    else
    xmlParseEndTag1(ctxt, 0);
#endif /* LIBXML_SAX1_ENABLED */
 
    /*
     * Capture end position
     */
    if (cur != NULL && ctxt->record_info) {
        xmlParserNodeInfoPtr node_info;
 
        node_info = (xmlParserNodeInfoPtr) xmlParserFindNodeInfo(ctxt, cur);
        if (node_info != NULL) {
            node_info->end_pos = ctxt->input->consumed +
                                 (CUR_PTR - ctxt->input->base);
            node_info->end_line = ctxt->input->line;
        }
    }
}
 
xmlChar *
xmlParseVersionNum(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = 10;
    xmlChar cur;
 
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
    xmlErrMemory(ctxt, NULL);
    return(NULL);
    }
    cur = CUR;
    if (!((cur >= '0') && (cur <= '9'))) {
    xmlFree(buf);
    return(NULL);
    }
    buf[len++] = cur;
    NEXT;
    cur=CUR;
    if (cur != '.') {
    xmlFree(buf);
    return(NULL);
    }
    buf[len++] = cur;
    NEXT;
    cur=CUR;
    while ((cur >= '0') && (cur <= '9')) {
    if (len + 1 >= size) {
        xmlChar *tmp;
 
        size *= 2;
        tmp = (xmlChar *) xmlRealloc(buf, size);
        if (tmp == NULL) {
            xmlFree(buf);
        xmlErrMemory(ctxt, NULL);
        return(NULL);
        }
        buf = tmp;
    }
    buf[len++] = cur;
    NEXT;
    cur=CUR;
    }
    buf[len] = 0;
    return(buf);
}
 
xmlChar *
xmlParseVersionInfo(xmlParserCtxtPtr ctxt) {
    xmlChar *version = NULL;
 
    if (CMP7(CUR_PTR, 'v', 'e', 'r', 's', 'i', 'o', 'n')) {
    SKIP(7);
    SKIP_BLANKS;
    if (RAW != '=') {
        xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL);
        return(NULL);
        }
    NEXT;
    SKIP_BLANKS;
    if (RAW == '"') {
        NEXT;
        version = xmlParseVersionNum(ctxt);
        if (RAW != '"') {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
        } else
            NEXT;
    } else if (RAW == '\''){
        NEXT;
        version = xmlParseVersionNum(ctxt);
        if (RAW != '\'') {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
        } else
            NEXT;
    } else {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL);
    }
    }
    return(version);
}
 
xmlChar *
xmlParseEncName(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = 10;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;
    xmlChar cur;
 
    cur = CUR;
    if (((cur >= 'a') && (cur <= 'z')) ||
        ((cur >= 'A') && (cur <= 'Z'))) {
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
        xmlErrMemory(ctxt, NULL);
        return(NULL);
    }
 
    buf[len++] = cur;
    NEXT;
    cur = CUR;
    while (((cur >= 'a') && (cur <= 'z')) ||
           ((cur >= 'A') && (cur <= 'Z')) ||
           ((cur >= '0') && (cur <= '9')) ||
           (cur == '.') || (cur == '_') ||
           (cur == '-')) {
        if (len + 1 >= size) {
            xmlChar *tmp;
 
        size *= 2;
        tmp = (xmlChar *) xmlRealloc(buf, size);
        if (tmp == NULL) {
            xmlErrMemory(ctxt, NULL);
            xmlFree(buf);
            return(NULL);
        }
        buf = tmp;
        }
        buf[len++] = cur;
            if (len > maxLength) {
                xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "EncName");
                xmlFree(buf);
                return(NULL);
            }
        NEXT;
        cur = CUR;
        }
    buf[len] = 0;
    } else {
    xmlFatalErr(ctxt, XML_ERR_ENCODING_NAME, NULL);
    }
    return(buf);
}
 
const xmlChar *
xmlParseEncodingDecl(xmlParserCtxtPtr ctxt) {
    xmlChar *encoding = NULL;
 
    SKIP_BLANKS;
    if (CMP8(CUR_PTR, 'e', 'n', 'c', 'o', 'd', 'i', 'n', 'g') == 0)
        return(NULL);
 
    SKIP(8);
    SKIP_BLANKS;
    if (RAW != '=') {
        xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL);
        return(NULL);
    }
    NEXT;
    SKIP_BLANKS;
    if (RAW == '"') {
        NEXT;
        encoding = xmlParseEncName(ctxt);
        if (RAW != '"') {
            xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
            xmlFree((xmlChar *) encoding);
            return(NULL);
        } else
            NEXT;
    } else if (RAW == '\''){
        NEXT;
        encoding = xmlParseEncName(ctxt);
        if (RAW != '\'') {
            xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
            xmlFree((xmlChar *) encoding);
            return(NULL);
        } else
            NEXT;
    } else {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL);
    }
 
    if (encoding == NULL)
        return(NULL);
 
    xmlSetDeclaredEncoding(ctxt, encoding);
 
    return(ctxt->encoding);
}
 
int
xmlParseSDDecl(xmlParserCtxtPtr ctxt) {
    int standalone = -2;
 
    SKIP_BLANKS;
    if (CMP10(CUR_PTR, 's', 't', 'a', 'n', 'd', 'a', 'l', 'o', 'n', 'e')) {
    SKIP(10);
        SKIP_BLANKS;
    if (RAW != '=') {
        xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL);
        return(standalone);
        }
    NEXT;
    SKIP_BLANKS;
        if (RAW == '\''){
        NEXT;
        if ((RAW == 'n') && (NXT(1) == 'o')) {
            standalone = 0;
                SKIP(2);
        } else if ((RAW == 'y') && (NXT(1) == 'e') &&
                   (NXT(2) == 's')) {
            standalone = 1;
        SKIP(3);
            } else {
        xmlFatalErr(ctxt, XML_ERR_STANDALONE_VALUE, NULL);
        }
        if (RAW != '\'') {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
        } else
            NEXT;
    } else if (RAW == '"'){
        NEXT;
        if ((RAW == 'n') && (NXT(1) == 'o')) {
            standalone = 0;
        SKIP(2);
        } else if ((RAW == 'y') && (NXT(1) == 'e') &&
                   (NXT(2) == 's')) {
            standalone = 1;
                SKIP(3);
            } else {
        xmlFatalErr(ctxt, XML_ERR_STANDALONE_VALUE, NULL);
        }
        if (RAW != '"') {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
        } else
            NEXT;
    } else {
        xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL);
        }
    }
    return(standalone);
}
 
void
xmlParseXMLDecl(xmlParserCtxtPtr ctxt) {
    xmlChar *version;
 
    /*
     * This value for standalone indicates that the document has an
     * XML declaration but it does not have a standalone attribute.
     * It will be overwritten later if a standalone attribute is found.
     */
 
    ctxt->standalone = -2;
 
    /*
     * We know that '<?xml' is here.
     */
    SKIP(5);
 
    if (!IS_BLANK_CH(RAW)) {
    xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
                   "Blank needed after '<?xml'\n");
    }
    SKIP_BLANKS;
 
    /*
     * We must have the VersionInfo here.
     */
    version = xmlParseVersionInfo(ctxt);
    if (version == NULL) {
    xmlFatalErr(ctxt, XML_ERR_VERSION_MISSING, NULL);
    } else {
    if (!xmlStrEqual(version, (const xmlChar *) XML_DEFAULT_VERSION)) {
        /*
         * Changed here for XML-1.0 5th edition
         */
        if (ctxt->options & XML_PARSE_OLD10) {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNKNOWN_VERSION,
                      "Unsupported version '%s'\n",
                      version);
        } else {
            if ((version[0] == '1') && ((version[1] == '.'))) {
            xmlWarningMsg(ctxt, XML_WAR_UNKNOWN_VERSION,
                          "Unsupported version '%s'\n",
                  version, NULL);
        } else {
            xmlFatalErrMsgStr(ctxt, XML_ERR_UNKNOWN_VERSION,
                      "Unsupported version '%s'\n",
                      version);
        }
        }
    }
    if (ctxt->version != NULL)
        xmlFree((void *) ctxt->version);
    ctxt->version = version;
    }
 
    /*
     * We may have the encoding declaration
     */
    if (!IS_BLANK_CH(RAW)) {
        if ((RAW == '?') && (NXT(1) == '>')) {
        SKIP(2);
        return;
    }
    xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, "Blank needed here\n");
    }
    xmlParseEncodingDecl(ctxt);
    if ((ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) ||
         (ctxt->instate == XML_PARSER_EOF)) {
    /*
     * The XML REC instructs us to stop parsing right here
     */
        return;
    }
 
    /*
     * We may have the standalone status.
     */
    if ((ctxt->encoding != NULL) && (!IS_BLANK_CH(RAW))) {
        if ((RAW == '?') && (NXT(1) == '>')) {
        SKIP(2);
        return;
    }
    xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, "Blank needed here\n");
    }
 
    /*
     * We can grow the input buffer freely at that point
     */
    GROW;
 
    SKIP_BLANKS;
    ctxt->standalone = xmlParseSDDecl(ctxt);
 
    SKIP_BLANKS;
    if ((RAW == '?') && (NXT(1) == '>')) {
        SKIP(2);
    } else if (RAW == '>') {
        /* Deprecated old WD ... */
    xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
    NEXT;
    } else {
        int c;
 
    xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
        while ((c = CUR) != 0) {
            NEXT;
            if (c == '>')
                break;
        }
    }
}
 
void
xmlParseMisc(xmlParserCtxtPtr ctxt) {
    while (ctxt->instate != XML_PARSER_EOF) {
        SKIP_BLANKS;
        GROW;
        if ((RAW == '<') && (NXT(1) == '?')) {
        xmlParsePI(ctxt);
        } else if (CMP4(CUR_PTR, '<', '!', '-', '-')) {
        xmlParseComment(ctxt);
        } else {
            break;
        }
    }
}
 
int
xmlParseDocument(xmlParserCtxtPtr ctxt) {
    xmlInitParser();
 
    if ((ctxt == NULL) || (ctxt->input == NULL))
        return(-1);
 
    GROW;
 
    /*
     * SAX: detecting the level.
     */
    xmlDetectSAX2(ctxt);
 
    /*
     * SAX: beginning of the document processing.
     */
    if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
        ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
    if (ctxt->instate == XML_PARSER_EOF)
    return(-1);
 
    xmlDetectEncoding(ctxt);
 
    if (CUR == 0) {
    xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL);
    return(-1);
    }
 
    GROW;
    if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
 
    /*
     * Note that we will switch encoding on the fly.
     */
    xmlParseXMLDecl(ctxt);
    if ((ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) ||
        (ctxt->instate == XML_PARSER_EOF)) {
        /*
         * The XML REC instructs us to stop parsing right here
         */
        return(-1);
    }
    SKIP_BLANKS;
    } else {
    ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
    }
    if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
        ctxt->sax->startDocument(ctxt->userData);
    if (ctxt->instate == XML_PARSER_EOF)
    return(-1);
    if ((ctxt->myDoc != NULL) && (ctxt->input != NULL) &&
        (ctxt->input->buf != NULL) && (ctxt->input->buf->compressed >= 0)) {
    ctxt->myDoc->compression = ctxt->input->buf->compressed;
    }
 
    /*
     * The Misc part of the Prolog
     */
    xmlParseMisc(ctxt);
 
    /*
     * Then possibly doc type declaration(s) and more Misc
     * (doctypedecl Misc*)?
     */
    GROW;
    if (CMP9(CUR_PTR, '<', '!', 'D', 'O', 'C', 'T', 'Y', 'P', 'E')) {
 
    ctxt->inSubset = 1;
    xmlParseDocTypeDecl(ctxt);
    if (RAW == '[') {
        ctxt->instate = XML_PARSER_DTD;
        xmlParseInternalSubset(ctxt);
        if (ctxt->instate == XML_PARSER_EOF)
        return(-1);
    }
 
    /*
     * Create and update the external subset.
     */
    ctxt->inSubset = 2;
    if ((ctxt->sax != NULL) && (ctxt->sax->externalSubset != NULL) &&
        (!ctxt->disableSAX))
        ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName,
                                  ctxt->extSubSystem, ctxt->extSubURI);
    if (ctxt->instate == XML_PARSER_EOF)
        return(-1);
    ctxt->inSubset = 0;
 
        xmlCleanSpecialAttr(ctxt);
 
    ctxt->instate = XML_PARSER_PROLOG;
    xmlParseMisc(ctxt);
    }
 
    /*
     * Time to start parsing the tree itself
     */
    GROW;
    if (RAW != '<') {
    xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY,
               "Start tag expected, '<' not found\n");
    } else {
    ctxt->instate = XML_PARSER_CONTENT;
    xmlParseElement(ctxt);
    ctxt->instate = XML_PARSER_EPILOG;
 
 
    /*
     * The Misc part at the end
     */
    xmlParseMisc(ctxt);
 
        if (ctxt->input->cur < ctxt->input->end) {
            if (ctxt->errNo == XML_ERR_OK)
            xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL);
        } else if ((ctxt->input->buf != NULL) &&
                   (ctxt->input->buf->encoder != NULL) &&
                   (!xmlBufIsEmpty(ctxt->input->buf->raw))) {
            xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
                           "Truncated multi-byte sequence at EOF\n");
        }
    ctxt->instate = XML_PARSER_EOF;
    }
 
    /*
     * SAX: end of the document processing.
     */
    if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
        ctxt->sax->endDocument(ctxt->userData);
 
    /*
     * Remove locally kept entity definitions if the tree was not built
     */
    if ((ctxt->myDoc != NULL) &&
    (xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE))) {
    xmlFreeDoc(ctxt->myDoc);
    ctxt->myDoc = NULL;
    }
 
    if ((ctxt->wellFormed) && (ctxt->myDoc != NULL)) {
        ctxt->myDoc->properties |= XML_DOC_WELLFORMED;
    if (ctxt->valid)
        ctxt->myDoc->properties |= XML_DOC_DTDVALID;
    if (ctxt->nsWellFormed)
        ctxt->myDoc->properties |= XML_DOC_NSVALID;
    if (ctxt->options & XML_PARSE_OLD10)
        ctxt->myDoc->properties |= XML_DOC_OLD10;
    }
    if (! ctxt->wellFormed) {
    ctxt->valid = 0;
    return(-1);
    }
    return(0);
}
 
int
xmlParseExtParsedEnt(xmlParserCtxtPtr ctxt) {
    if ((ctxt == NULL) || (ctxt->input == NULL))
        return(-1);
 
    xmlDetectSAX2(ctxt);
 
    /*
     * SAX: beginning of the document processing.
     */
    if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
        ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
 
    xmlDetectEncoding(ctxt);
 
    if (CUR == 0) {
    xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL);
    }
 
    /*
     * Check for the XMLDecl in the Prolog.
     */
    GROW;
    if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
 
    /*
     * Note that we will switch encoding on the fly.
     */
    xmlParseXMLDecl(ctxt);
    if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
        /*
         * The XML REC instructs us to stop parsing right here
         */
        return(-1);
    }
    SKIP_BLANKS;
    } else {
    ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
    }
    if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
        ctxt->sax->startDocument(ctxt->userData);
    if (ctxt->instate == XML_PARSER_EOF)
    return(-1);
 
    /*
     * Doing validity checking on chunk doesn't make sense
     */
    ctxt->instate = XML_PARSER_CONTENT;
    ctxt->validate = 0;
    ctxt->loadsubset = 0;
    ctxt->depth = 0;
 
    xmlParseContent(ctxt);
    if (ctxt->instate == XML_PARSER_EOF)
    return(-1);
 
    if ((RAW == '<') && (NXT(1) == '/')) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    } else if (RAW != 0) {
    xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL);
    }
 
    /*
     * SAX: end of the document processing.
     */
    if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
        ctxt->sax->endDocument(ctxt->userData);
 
    if (! ctxt->wellFormed) return(-1);
    return(0);
}
 
#ifdef LIBXML_PUSH_ENABLED
/************************************************************************
 *                                  *
 *      Progressive parsing interfaces              *
 *                                  *
 ************************************************************************/
 
static int
xmlParseLookupChar(xmlParserCtxtPtr ctxt, int c) {
    const xmlChar *cur;
 
    if (ctxt->checkIndex == 0) {
        cur = ctxt->input->cur + 1;
    } else {
        cur = ctxt->input->cur + ctxt->checkIndex;
    }
 
    if (memchr(cur, c, ctxt->input->end - cur) == NULL) {
        size_t index = ctxt->input->end - ctxt->input->cur;
 
        if (index > LONG_MAX) {
            ctxt->checkIndex = 0;
            return(1);
        }
        ctxt->checkIndex = index;
        return(0);
    } else {
        ctxt->checkIndex = 0;
        return(1);
    }
}
 
static const xmlChar *
xmlParseLookupString(xmlParserCtxtPtr ctxt, size_t startDelta,
                     const char *str, size_t strLen) {
    const xmlChar *cur, *term;
 
    if (ctxt->checkIndex == 0) {
        cur = ctxt->input->cur + startDelta;
    } else {
        cur = ctxt->input->cur + ctxt->checkIndex;
    }
 
    term = BAD_CAST strstr((const char *) cur, str);
    if (term == NULL) {
        const xmlChar *end = ctxt->input->end;
        size_t index;
 
        /* Rescan (strLen - 1) characters. */
        if ((size_t) (end - cur) < strLen)
            end = cur;
        else
            end -= strLen - 1;
        index = end - ctxt->input->cur;
        if (index > LONG_MAX) {
            ctxt->checkIndex = 0;
            return(ctxt->input->end - strLen);
        }
        ctxt->checkIndex = index;
    } else {
        ctxt->checkIndex = 0;
    }
 
    return(term);
}
 
static int
xmlParseLookupCharData(xmlParserCtxtPtr ctxt) {
    const xmlChar *cur = ctxt->input->cur + ctxt->checkIndex;
    const xmlChar *end = ctxt->input->end;
    size_t index;
 
    while (cur < end) {
        if ((*cur == '<') || (*cur == '&')) {
            ctxt->checkIndex = 0;
            return(1);
        }
        cur++;
    }
 
    index = cur - ctxt->input->cur;
    if (index > LONG_MAX) {
        ctxt->checkIndex = 0;
        return(1);
    }
    ctxt->checkIndex = index;
    return(0);
}
 
static int
xmlParseLookupGt(xmlParserCtxtPtr ctxt) {
    const xmlChar *cur;
    const xmlChar *end = ctxt->input->end;
    int state = ctxt->endCheckState;
    size_t index;
 
    if (ctxt->checkIndex == 0)
        cur = ctxt->input->cur + 1;
    else
        cur = ctxt->input->cur + ctxt->checkIndex;
 
    while (cur < end) {
        if (state) {
            if (*cur == state)
                state = 0;
        } else if (*cur == '\'' || *cur == '"') {
            state = *cur;
        } else if (*cur == '>') {
            ctxt->checkIndex = 0;
            ctxt->endCheckState = 0;
            return(1);
        }
        cur++;
    }
 
    index = cur - ctxt->input->cur;
    if (index > LONG_MAX) {
        ctxt->checkIndex = 0;
        ctxt->endCheckState = 0;
        return(1);
    }
    ctxt->checkIndex = index;
    ctxt->endCheckState = state;
    return(0);
}
 
static int
xmlParseLookupInternalSubset(xmlParserCtxtPtr ctxt) {
    /*
     * Sorry, but progressive parsing of the internal subset is not
     * supported. We first check that the full content of the internal
     * subset is available and parsing is launched only at that point.
     * Internal subset ends with "']' S? '>'" in an unescaped section and
     * not in a ']]>' sequence which are conditional sections.
     */
    const xmlChar *cur, *start;
    const xmlChar *end = ctxt->input->end;
    int state = ctxt->endCheckState;
    size_t index;
 
    if (ctxt->checkIndex == 0) {
        cur = ctxt->input->cur + 1;
    } else {
        cur = ctxt->input->cur + ctxt->checkIndex;
    }
    start = cur;
 
    while (cur < end) {
        if (state == '-') {
            if ((*cur == '-') &&
                (cur[1] == '-') &&
                (cur[2] == '>')) {
                state = 0;
                cur += 3;
                start = cur;
                continue;
            }
        }
        else if (state == ']') {
            if (*cur == '>') {
                ctxt->checkIndex = 0;
                ctxt->endCheckState = 0;
                return(1);
            }
            if (IS_BLANK_CH(*cur)) {
                state = ' ';
            } else if (*cur != ']') {
                state = 0;
                start = cur;
                continue;
            }
        }
        else if (state == ' ') {
            if (*cur == '>') {
                ctxt->checkIndex = 0;
                ctxt->endCheckState = 0;
                return(1);
            }
            if (!IS_BLANK_CH(*cur)) {
                state = 0;
                start = cur;
                continue;
            }
        }
        else if (state != 0) {
            if (*cur == state) {
                state = 0;
                start = cur + 1;
            }
        }
        else if (*cur == '<') {
            if ((cur[1] == '!') &&
                (cur[2] == '-') &&
                (cur[3] == '-')) {
                state = '-';
                cur += 4;
                /* Don't treat <!--> as comment */
                start = cur;
                continue;
            }
        }
        else if ((*cur == '"') || (*cur == '\'') || (*cur == ']')) {
            state = *cur;
        }
 
        cur++;
    }
 
    /*
     * Rescan the three last characters to detect "<!--" and "-->"
     * split across chunks.
     */
    if ((state == 0) || (state == '-')) {
        if (cur - start < 3)
            cur = start;
        else
            cur -= 3;
    }
    index = cur - ctxt->input->cur;
    if (index > LONG_MAX) {
        ctxt->checkIndex = 0;
        ctxt->endCheckState = 0;
        return(1);
    }
    ctxt->checkIndex = index;
    ctxt->endCheckState = state;
    return(0);
}
 
static int
xmlCheckCdataPush(const xmlChar *utf, int len, int complete) {
    int ix;
    unsigned char c;
    int codepoint;
 
    if ((utf == NULL) || (len <= 0))
        return(0);
 
    for (ix = 0; ix < len;) {      /* string is 0-terminated */
        c = utf[ix];
        if ((c & 0x80) == 0x00) {   /* 1-byte code, starts with 10 */
        if (c >= 0x20)
        ix++;
        else if ((c == 0xA) || (c == 0xD) || (c == 0x9))
            ix++;
        else
            return(-ix);
    } else if ((c & 0xe0) == 0xc0) {/* 2-byte code, starts with 110 */
        if (ix + 2 > len) return(complete ? -ix : ix);
        if ((utf[ix+1] & 0xc0 ) != 0x80)
            return(-ix);
        codepoint = (utf[ix] & 0x1f) << 6;
        codepoint |= utf[ix+1] & 0x3f;
        if (!xmlIsCharQ(codepoint))
            return(-ix);
        ix += 2;
    } else if ((c & 0xf0) == 0xe0) {/* 3-byte code, starts with 1110 */
        if (ix + 3 > len) return(complete ? -ix : ix);
        if (((utf[ix+1] & 0xc0) != 0x80) ||
            ((utf[ix+2] & 0xc0) != 0x80))
            return(-ix);
        codepoint = (utf[ix] & 0xf) << 12;
        codepoint |= (utf[ix+1] & 0x3f) << 6;
        codepoint |= utf[ix+2] & 0x3f;
        if (!xmlIsCharQ(codepoint))
            return(-ix);
        ix += 3;
    } else if ((c & 0xf8) == 0xf0) {/* 4-byte code, starts with 11110 */
        if (ix + 4 > len) return(complete ? -ix : ix);
        if (((utf[ix+1] & 0xc0) != 0x80) ||
            ((utf[ix+2] & 0xc0) != 0x80) ||
        ((utf[ix+3] & 0xc0) != 0x80))
            return(-ix);
        codepoint = (utf[ix] & 0x7) << 18;
        codepoint |= (utf[ix+1] & 0x3f) << 12;
        codepoint |= (utf[ix+2] & 0x3f) << 6;
        codepoint |= utf[ix+3] & 0x3f;
        if (!xmlIsCharQ(codepoint))
            return(-ix);
        ix += 4;
    } else              /* unknown encoding */
        return(-ix);
      }
      return(ix);
}
 
static int
xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
    int ret = 0;
    size_t avail;
    xmlChar cur, next;
 
    if (ctxt->input == NULL)
        return(0);
 
    if ((ctxt->input != NULL) &&
        (ctxt->input->cur - ctxt->input->base > 4096)) {
        xmlParserShrink(ctxt);
    }
 
    while (ctxt->instate != XML_PARSER_EOF) {
    if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1))
        return(0);
 
        avail = ctxt->input->end - ctxt->input->cur;
        if (avail < 1)
        goto done;
        switch (ctxt->instate) {
            case XML_PARSER_EOF:
            /*
         * Document parsing is done !
         */
            goto done;
            case XML_PARSER_START:
                /*
                 * Very first chars read from the document flow.
                 */
                if ((!terminate) && (avail < 4))
                    goto done;
 
                /*
                 * We need more bytes to detect EBCDIC code pages.
                 * See xmlDetectEBCDIC.
                 */
                if ((CMP4(CUR_PTR, 0x4C, 0x6F, 0xA7, 0x94)) &&
                    (!terminate) && (avail < 200))
                    goto done;
 
                xmlDetectEncoding(ctxt);
                if (ctxt->instate == XML_PARSER_EOF)
                    goto done;
                ctxt->instate = XML_PARSER_XML_DECL;
        break;
 
            case XML_PARSER_XML_DECL:
        if ((!terminate) && (avail < 2))
            goto done;
        cur = ctxt->input->cur[0];
        next = ctxt->input->cur[1];
            if ((cur == '<') && (next == '?')) {
            /* PI or XML decl */
            if ((!terminate) &&
                        (!xmlParseLookupString(ctxt, 2, "?>", 2)))
            goto done;
            if ((ctxt->input->cur[2] == 'x') &&
            (ctxt->input->cur[3] == 'm') &&
            (ctxt->input->cur[4] == 'l') &&
            (IS_BLANK_CH(ctxt->input->cur[5]))) {
            ret += 5;
            xmlParseXMLDecl(ctxt);
            if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
                /*
                 * The XML REC instructs us to stop parsing right
                 * here
                 */
                xmlHaltParser(ctxt);
                return(0);
            }
            } else {
            ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
            }
        } else {
            ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
            if (ctxt->version == NULL) {
                xmlErrMemory(ctxt, NULL);
            break;
            }
        }
                if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
                    ctxt->sax->setDocumentLocator(ctxt->userData,
                                                  &xmlDefaultSAXLocator);
                if ((ctxt->sax) && (ctxt->sax->startDocument) &&
                    (!ctxt->disableSAX))
                    ctxt->sax->startDocument(ctxt->userData);
                if (ctxt->instate == XML_PARSER_EOF)
                    goto done;
                ctxt->instate = XML_PARSER_MISC;
        break;
            case XML_PARSER_START_TAG: {
            const xmlChar *name;
        const xmlChar *prefix = NULL;
        const xmlChar *URI = NULL;
                int line = ctxt->input->line;
        int nbNs = 0;
 
        if ((!terminate) && (avail < 2))
            goto done;
        cur = ctxt->input->cur[0];
            if (cur != '<') {
            xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY,
                                   "Start tag expected, '<' not found");
            xmlHaltParser(ctxt);
            if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
            ctxt->sax->endDocument(ctxt->userData);
            goto done;
        }
        if ((!terminate) && (!xmlParseLookupGt(ctxt)))
                    goto done;
        if (ctxt->spaceNr == 0)
            spacePush(ctxt, -1);
        else if (*ctxt->space == -2)
            spacePush(ctxt, -1);
        else
            spacePush(ctxt, *ctxt->space);
#ifdef LIBXML_SAX1_ENABLED
        if (ctxt->sax2)
#endif /* LIBXML_SAX1_ENABLED */
            name = xmlParseStartTag2(ctxt, &prefix, &URI, &nbNs);
#ifdef LIBXML_SAX1_ENABLED
        else
            name = xmlParseStartTag(ctxt);
#endif /* LIBXML_SAX1_ENABLED */
        if (ctxt->instate == XML_PARSER_EOF)
            goto done;
        if (name == NULL) {
            spacePop(ctxt);
            xmlHaltParser(ctxt);
            if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
            ctxt->sax->endDocument(ctxt->userData);
            goto done;
        }
#ifdef LIBXML_VALID_ENABLED
        /*
         * [ VC: Root Element Type ]
         * The Name in the document type declaration must match
         * the element type of the root element.
         */
        if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc &&
            ctxt->node && (ctxt->node == ctxt->myDoc->children))
            ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc);
#endif /* LIBXML_VALID_ENABLED */
 
        /*
         * Check for an Empty Element.
         */
        if ((RAW == '/') && (NXT(1) == '>')) {
            SKIP(2);
 
            if (ctxt->sax2) {
            if ((ctxt->sax != NULL) &&
                (ctxt->sax->endElementNs != NULL) &&
                (!ctxt->disableSAX))
                ctxt->sax->endElementNs(ctxt->userData, name,
                                        prefix, URI);
            if (nbNs > 0)
                xmlParserNsPop(ctxt, nbNs);
#ifdef LIBXML_SAX1_ENABLED
            } else {
            if ((ctxt->sax != NULL) &&
                (ctxt->sax->endElement != NULL) &&
                (!ctxt->disableSAX))
                ctxt->sax->endElement(ctxt->userData, name);
#endif /* LIBXML_SAX1_ENABLED */
            }
            spacePop(ctxt);
        } else if (RAW == '>') {
            NEXT;
                    nameNsPush(ctxt, name, prefix, URI, line, nbNs);
        } else {
            xmlFatalErrMsgStr(ctxt, XML_ERR_GT_REQUIRED,
                     "Couldn't find end of Start Tag %s\n",
                     name);
            nodePop(ctxt);
            spacePop(ctxt);
                    if (nbNs > 0)
                        xmlParserNsPop(ctxt, nbNs);
        }
 
                if (ctxt->instate == XML_PARSER_EOF)
                    goto done;
                if (ctxt->nameNr == 0)
                    ctxt->instate = XML_PARSER_EPILOG;
                else
                    ctxt->instate = XML_PARSER_CONTENT;
                break;
        }
            case XML_PARSER_CONTENT: {
        cur = ctxt->input->cur[0];
 
        if (cur == '<') {
                    if ((!terminate) && (avail < 2))
                        goto done;
            next = ctxt->input->cur[1];
 
                    if (next == '/') {
                        ctxt->instate = XML_PARSER_END_TAG;
                        break;
                    } else if (next == '?') {
                        if ((!terminate) &&
                            (!xmlParseLookupString(ctxt, 2, "?>", 2)))
                            goto done;
                        xmlParsePI(ctxt);
                        if (ctxt->instate == XML_PARSER_EOF)
                            goto done;
                        ctxt->instate = XML_PARSER_CONTENT;
                        break;
                    } else if (next == '!') {
                        if ((!terminate) && (avail < 3))
                            goto done;
                        next = ctxt->input->cur[2];
 
                        if (next == '-') {
                            if ((!terminate) && (avail < 4))
                                goto done;
                            if (ctxt->input->cur[3] == '-') {
                                if ((!terminate) &&
                                    (!xmlParseLookupString(ctxt, 4, "-->", 3)))
                                    goto done;
                                xmlParseComment(ctxt);
                                if (ctxt->instate == XML_PARSER_EOF)
                                    goto done;
                                ctxt->instate = XML_PARSER_CONTENT;
                                break;
                            }
                        } else if (next == '[') {
                            if ((!terminate) && (avail < 9))
                                goto done;
                            if ((ctxt->input->cur[2] == '[') &&
                                (ctxt->input->cur[3] == 'C') &&
                                (ctxt->input->cur[4] == 'D') &&
                                (ctxt->input->cur[5] == 'A') &&
                                (ctxt->input->cur[6] == 'T') &&
                                (ctxt->input->cur[7] == 'A') &&
                                (ctxt->input->cur[8] == '[')) {
                                SKIP(9);
                                ctxt->instate = XML_PARSER_CDATA_SECTION;
                                break;
                            }
                        }
                    }
        } else if (cur == '&') {
            if ((!terminate) && (!xmlParseLookupChar(ctxt, ';')))
            goto done;
            xmlParseReference(ctxt);
                    break;
        } else {
            /* TODO Avoid the extra copy, handle directly !!! */
            /*
             * Goal of the following test is:
             *  - minimize calls to the SAX 'character' callback
             *    when they are mergeable
             *  - handle an problem for isBlank when we only parse
             *    a sequence of blank chars and the next one is
             *    not available to check against '<' presence.
             *  - tries to homogenize the differences in SAX
             *    callbacks between the push and pull versions
             *    of the parser.
             */
            if (avail < XML_PARSER_BIG_BUFFER_SIZE) {
            if ((!terminate) && (!xmlParseLookupCharData(ctxt)))
                goto done;
                    }
                    ctxt->checkIndex = 0;
            xmlParseCharDataInternal(ctxt, !terminate);
                    break;
        }
 
                ctxt->instate = XML_PARSER_START_TAG;
        break;
        }
            case XML_PARSER_END_TAG:
        if ((!terminate) && (!xmlParseLookupChar(ctxt, '>')))
            goto done;
        if (ctxt->sax2) {
                xmlParseEndTag2(ctxt, &ctxt->pushTab[ctxt->nameNr - 1]);
            nameNsPop(ctxt);
        }
#ifdef LIBXML_SAX1_ENABLED
          else
            xmlParseEndTag1(ctxt, 0);
#endif /* LIBXML_SAX1_ENABLED */
                if (ctxt->instate == XML_PARSER_EOF)
                    goto done;
        if (ctxt->nameNr == 0) {
            ctxt->instate = XML_PARSER_EPILOG;
        } else {
            ctxt->instate = XML_PARSER_CONTENT;
        }
        break;
            case XML_PARSER_CDATA_SECTION: {
            /*
         * The Push mode need to have the SAX callback for
         * cdataBlock merge back contiguous callbacks.
         */
        const xmlChar *term;
 
                if (terminate) {
                    /*
                     * Don't call xmlParseLookupString. If 'terminate'
                     * is set, checkIndex is invalid.
                     */
                    term = BAD_CAST strstr((const char *) ctxt->input->cur,
                                           "]]>");
                } else {
            term = xmlParseLookupString(ctxt, 0, "]]>", 3);
                }
 
        if (term == NULL) {
            int tmp, size;
 
                    if (terminate) {
                        /* Unfinished CDATA section */
                        size = ctxt->input->end - ctxt->input->cur;
                    } else {
                        if (avail < XML_PARSER_BIG_BUFFER_SIZE + 2)
                            goto done;
                        ctxt->checkIndex = 0;
                        /* XXX: Why don't we pass the full buffer? */
                        size = XML_PARSER_BIG_BUFFER_SIZE;
                    }
                    tmp = xmlCheckCdataPush(ctxt->input->cur, size, 0);
                    if (tmp <= 0) {
                        tmp = -tmp;
                        ctxt->input->cur += tmp;
                        goto encoding_error;
                    }
                    if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
                        if (ctxt->sax->cdataBlock != NULL)
                            ctxt->sax->cdataBlock(ctxt->userData,
                                                  ctxt->input->cur, tmp);
                        else if (ctxt->sax->characters != NULL)
                            ctxt->sax->characters(ctxt->userData,
                                                  ctxt->input->cur, tmp);
                    }
                    if (ctxt->instate == XML_PARSER_EOF)
                        goto done;
                    SKIPL(tmp);
        } else {
                    int base = term - CUR_PTR;
            int tmp;
 
            tmp = xmlCheckCdataPush(ctxt->input->cur, base, 1);
            if ((tmp < 0) || (tmp != base)) {
            tmp = -tmp;
            ctxt->input->cur += tmp;
            goto encoding_error;
            }
            if ((ctxt->sax != NULL) && (base == 0) &&
                (ctxt->sax->cdataBlock != NULL) &&
                (!ctxt->disableSAX)) {
            /*
             * Special case to provide identical behaviour
             * between pull and push parsers on enpty CDATA
             * sections
             */
             if ((ctxt->input->cur - ctxt->input->base >= 9) &&
                 (!strncmp((const char *)&ctxt->input->cur[-9],
                           "<![CDATA[", 9)))
                 ctxt->sax->cdataBlock(ctxt->userData,
                                       BAD_CAST "", 0);
            } else if ((ctxt->sax != NULL) && (base > 0) &&
            (!ctxt->disableSAX)) {
            if (ctxt->sax->cdataBlock != NULL)
                ctxt->sax->cdataBlock(ctxt->userData,
                          ctxt->input->cur, base);
            else if (ctxt->sax->characters != NULL)
                ctxt->sax->characters(ctxt->userData,
                          ctxt->input->cur, base);
            }
            if (ctxt->instate == XML_PARSER_EOF)
            goto done;
            SKIPL(base + 3);
            ctxt->instate = XML_PARSER_CONTENT;
        }
        break;
        }
            case XML_PARSER_MISC:
            case XML_PARSER_PROLOG:
            case XML_PARSER_EPILOG:
        SKIP_BLANKS;
                avail = ctxt->input->end - ctxt->input->cur;
        if (avail < 1)
            goto done;
        if (ctxt->input->cur[0] == '<') {
                    if ((!terminate) && (avail < 2))
                        goto done;
                    next = ctxt->input->cur[1];
                    if (next == '?') {
                        if ((!terminate) &&
                            (!xmlParseLookupString(ctxt, 2, "?>", 2)))
                            goto done;
                        xmlParsePI(ctxt);
                        if (ctxt->instate == XML_PARSER_EOF)
                            goto done;
                        break;
                    } else if (next == '!') {
                        if ((!terminate) && (avail < 3))
                            goto done;
 
                        if (ctxt->input->cur[2] == '-') {
                            if ((!terminate) && (avail < 4))
                                goto done;
                            if (ctxt->input->cur[3] == '-') {
                                if ((!terminate) &&
                                    (!xmlParseLookupString(ctxt, 4, "-->", 3)))
                                    goto done;
                                xmlParseComment(ctxt);
                                if (ctxt->instate == XML_PARSER_EOF)
                                    goto done;
                                break;
                            }
                        } else if (ctxt->instate == XML_PARSER_MISC) {
                            if ((!terminate) && (avail < 9))
                                goto done;
                            if ((ctxt->input->cur[2] == 'D') &&
                                (ctxt->input->cur[3] == 'O') &&
                                (ctxt->input->cur[4] == 'C') &&
                                (ctxt->input->cur[5] == 'T') &&
                                (ctxt->input->cur[6] == 'Y') &&
                                (ctxt->input->cur[7] == 'P') &&
                                (ctxt->input->cur[8] == 'E')) {
                                if ((!terminate) && (!xmlParseLookupGt(ctxt)))
                                    goto done;
                                ctxt->inSubset = 1;
                                xmlParseDocTypeDecl(ctxt);
                                if (ctxt->instate == XML_PARSER_EOF)
                                    goto done;
                                if (RAW == '[') {
                                    ctxt->instate = XML_PARSER_DTD;
                                } else {
                                    /*
                                     * Create and update the external subset.
                                     */
                                    ctxt->inSubset = 2;
                                    if ((ctxt->sax != NULL) &&
                                        (!ctxt->disableSAX) &&
                                        (ctxt->sax->externalSubset != NULL))
                                        ctxt->sax->externalSubset(
                                                ctxt->userData,
                                                ctxt->intSubName,
                                                ctxt->extSubSystem,
                                                ctxt->extSubURI);
                                    ctxt->inSubset = 0;
                                    xmlCleanSpecialAttr(ctxt);
                                    if (ctxt->instate == XML_PARSER_EOF)
                                        goto done;
                                    ctxt->instate = XML_PARSER_PROLOG;
                                }
                                break;
                            }
                        }
                    }
                }
 
                if (ctxt->instate == XML_PARSER_EPILOG) {
                    if (ctxt->errNo == XML_ERR_OK)
                        xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL);
            ctxt->instate = XML_PARSER_EOF;
                    if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
                        ctxt->sax->endDocument(ctxt->userData);
                } else {
            ctxt->instate = XML_PARSER_START_TAG;
        }
        break;
            case XML_PARSER_DTD: {
                if ((!terminate) && (!xmlParseLookupInternalSubset(ctxt)))
                    goto done;
        xmlParseInternalSubset(ctxt);
        if (ctxt->instate == XML_PARSER_EOF)
            goto done;
        ctxt->inSubset = 2;
        if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
            (ctxt->sax->externalSubset != NULL))
            ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName,
                ctxt->extSubSystem, ctxt->extSubURI);
        ctxt->inSubset = 0;
        xmlCleanSpecialAttr(ctxt);
        if (ctxt->instate == XML_PARSER_EOF)
            goto done;
        ctxt->instate = XML_PARSER_PROLOG;
                break;
        }
            default:
        xmlGenericError(xmlGenericErrorContext,
            "PP: internal error\n");
        ctxt->instate = XML_PARSER_EOF;
        break;
    }
    }
done:
    return(ret);
encoding_error:
    if (ctxt->input->end - ctxt->input->cur < 4) {
    __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR,
             "Input is not proper UTF-8, indicate encoding !\n",
             NULL, NULL);
    } else {
        char buffer[150];
 
    snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n",
            ctxt->input->cur[0], ctxt->input->cur[1],
            ctxt->input->cur[2], ctxt->input->cur[3]);
    __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR,
             "Input is not proper UTF-8, indicate encoding !\n%s",
             BAD_CAST buffer, NULL);
    }
    return(0);
}
 
int
xmlParseChunk(xmlParserCtxtPtr ctxt, const char *chunk, int size,
              int terminate) {
    int end_in_lf = 0;
 
    if (ctxt == NULL)
        return(XML_ERR_INTERNAL_ERROR);
    if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1))
        return(ctxt->errNo);
    if (ctxt->instate == XML_PARSER_EOF)
        return(-1);
    if (ctxt->input == NULL)
        return(-1);
 
    ctxt->progressive = 1;
    if (ctxt->instate == XML_PARSER_START)
        xmlDetectSAX2(ctxt);
    if ((size > 0) && (chunk != NULL) && (!terminate) &&
        (chunk[size - 1] == '\r')) {
    end_in_lf = 1;
    size--;
    }
 
    if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
        (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF))  {
    size_t pos = ctxt->input->cur - ctxt->input->base;
    int res;
 
    res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
        xmlBufUpdateInput(ctxt->input->buf->buffer, ctxt->input, pos);
    if (res < 0) {
            xmlFatalErr(ctxt, ctxt->input->buf->error, NULL);
        xmlHaltParser(ctxt);
        return(ctxt->errNo);
    }
    }
 
    xmlParseTryOrFinish(ctxt, terminate);
    if (ctxt->instate == XML_PARSER_EOF)
        return(ctxt->errNo);
 
    if ((ctxt->input != NULL) &&
         (((ctxt->input->end - ctxt->input->cur) > XML_MAX_LOOKUP_LIMIT) ||
         ((ctxt->input->cur - ctxt->input->base) > XML_MAX_LOOKUP_LIMIT)) &&
        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, "Huge input lookup");
        xmlHaltParser(ctxt);
    }
    if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1))
        return(ctxt->errNo);
 
    if ((end_in_lf == 1) && (ctxt->input != NULL) &&
        (ctxt->input->buf != NULL)) {
    size_t pos = ctxt->input->cur - ctxt->input->base;
        int res;
 
    res = xmlParserInputBufferPush(ctxt->input->buf, 1, "\r");
    xmlBufUpdateInput(ctxt->input->buf->buffer, ctxt->input, pos);
        if (res < 0) {
            xmlFatalErr(ctxt, ctxt->input->buf->error, NULL);
            xmlHaltParser(ctxt);
            return(ctxt->errNo);
        }
    }
    if (terminate) {
    /*
     * Check for termination
     */
        if ((ctxt->instate != XML_PARSER_EOF) &&
            (ctxt->instate != XML_PARSER_EPILOG)) {
            if (ctxt->nameNr > 0) {
                const xmlChar *name = ctxt->nameTab[ctxt->nameNr - 1];
                int line = ctxt->pushTab[ctxt->nameNr - 1].line;
                xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
                        "Premature end of data in tag %s line %d\n",
                        name, line, NULL);
            } else if (ctxt->instate == XML_PARSER_START) {
                xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL);
            } else {
                xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY,
                               "Start tag expected, '<' not found\n");
            }
        } else if ((ctxt->input->buf != NULL) &&
                   (ctxt->input->buf->encoder != NULL) &&
                   (!xmlBufIsEmpty(ctxt->input->buf->raw))) {
            xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
                           "Truncated multi-byte sequence at EOF\n");
        }
    if (ctxt->instate != XML_PARSER_EOF) {
        if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
        ctxt->sax->endDocument(ctxt->userData);
    }
    ctxt->instate = XML_PARSER_EOF;
    }
    if (ctxt->wellFormed == 0)
    return((xmlParserErrors) ctxt->errNo);
    else
        return(0);
}
 
/************************************************************************
 *                                  *
 *      I/O front end functions to the parser           *
 *                                  *
 ************************************************************************/
 
xmlParserCtxtPtr
xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
                        const char *chunk, int size, const char *filename) {
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr inputStream;
    xmlParserInputBufferPtr buf;
 
    buf = xmlAllocParserInputBuffer(XML_CHAR_ENCODING_NONE);
    if (buf == NULL) return(NULL);
 
    ctxt = xmlNewSAXParserCtxt(sax, user_data);
    if (ctxt == NULL) {
        xmlErrMemory(NULL, "creating parser: out of memory\n");
    xmlFreeParserInputBuffer(buf);
    return(NULL);
    }
    ctxt->dictNames = 1;
    if (filename == NULL) {
    ctxt->directory = NULL;
    } else {
        ctxt->directory = xmlParserGetDirectory(filename);
    }
 
    inputStream = xmlNewInputStream(ctxt);
    if (inputStream == NULL) {
    xmlFreeParserCtxt(ctxt);
    xmlFreeParserInputBuffer(buf);
    return(NULL);
    }
 
    if (filename == NULL)
    inputStream->filename = NULL;
    else {
    inputStream->filename = (char *)
        xmlCanonicPath((const xmlChar *) filename);
    if (inputStream->filename == NULL) {
            xmlFreeInputStream(inputStream);
        xmlFreeParserCtxt(ctxt);
        xmlFreeParserInputBuffer(buf);
        return(NULL);
    }
    }
    inputStream->buf = buf;
    xmlBufResetInput(inputStream->buf->buffer, inputStream);
    inputPush(ctxt, inputStream);
 
    if ((size != 0) && (chunk != NULL) &&
        (ctxt->input != NULL) && (ctxt->input->buf != NULL)) {
    size_t pos = ctxt->input->cur - ctxt->input->base;
        int res;
 
    res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
        xmlBufUpdateInput(ctxt->input->buf->buffer, ctxt->input, pos);
        if (res < 0) {
            xmlFatalErr(ctxt, ctxt->input->buf->error, NULL);
            xmlHaltParser(ctxt);
        }
    }
 
    return(ctxt);
}
#endif /* LIBXML_PUSH_ENABLED */
 
void
xmlStopParser(xmlParserCtxtPtr ctxt) {
    if (ctxt == NULL)
        return;
    xmlHaltParser(ctxt);
    ctxt->errNo = XML_ERR_USER_STOP;
}
 
xmlParserCtxtPtr
xmlCreateIOParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
    xmlInputReadCallback   ioread, xmlInputCloseCallback  ioclose,
    void *ioctx, xmlCharEncoding enc) {
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr inputStream;
    xmlParserInputBufferPtr buf;
 
    if (ioread == NULL) return(NULL);
 
    buf = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, enc);
    if (buf == NULL) {
        if (ioclose != NULL)
            ioclose(ioctx);
        return (NULL);
    }
 
    ctxt = xmlNewSAXParserCtxt(sax, user_data);
    if (ctxt == NULL) {
    xmlFreeParserInputBuffer(buf);
    return(NULL);
    }
 
    inputStream = xmlNewIOInputStream(ctxt, buf, enc);
    if (inputStream == NULL) {
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
    inputPush(ctxt, inputStream);
 
    return(ctxt);
}
 
#ifdef LIBXML_VALID_ENABLED
/************************************************************************
 *                                  *
 *      Front ends when parsing a DTD               *
 *                                  *
 ************************************************************************/
 
xmlDtdPtr
xmlIOParseDTD(xmlSAXHandlerPtr sax, xmlParserInputBufferPtr input,
          xmlCharEncoding enc) {
    xmlDtdPtr ret = NULL;
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr pinput = NULL;
 
    if (input == NULL)
    return(NULL);
 
    ctxt = xmlNewSAXParserCtxt(sax, NULL);
    if (ctxt == NULL) {
        xmlFreeParserInputBuffer(input);
    return(NULL);
    }
 
    /* We are loading a DTD */
    ctxt->options |= XML_PARSE_DTDLOAD;
 
    xmlDetectSAX2(ctxt);
 
    /*
     * generate a parser input from the I/O handler
     */
 
    pinput = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (pinput == NULL) {
        xmlFreeParserInputBuffer(input);
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    /*
     * plug some encoding conversion routines here.
     */
    if (xmlPushInput(ctxt, pinput) < 0) {
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
    if (enc != XML_CHAR_ENCODING_NONE) {
        xmlSwitchEncoding(ctxt, enc);
    }
 
    /*
     * let's parse that entity knowing it's an external subset.
     */
    ctxt->inSubset = 2;
    ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0");
    if (ctxt->myDoc == NULL) {
    xmlErrMemory(ctxt, "New Doc failed");
    return(NULL);
    }
    ctxt->myDoc->properties = XML_DOC_INTERNAL;
    ctxt->myDoc->extSubset = xmlNewDtd(ctxt->myDoc, BAD_CAST "none",
                                   BAD_CAST "none", BAD_CAST "none");
 
    xmlDetectEncoding(ctxt);
 
    xmlParseExternalSubset(ctxt, BAD_CAST "none", BAD_CAST "none");
 
    if (ctxt->myDoc != NULL) {
    if (ctxt->wellFormed) {
        ret = ctxt->myDoc->extSubset;
        ctxt->myDoc->extSubset = NULL;
        if (ret != NULL) {
        xmlNodePtr tmp;
 
        ret->doc = NULL;
        tmp = ret->children;
        while (tmp != NULL) {
            tmp->doc = NULL;
            tmp = tmp->next;
        }
        }
    } else {
        ret = NULL;
    }
        xmlFreeDoc(ctxt->myDoc);
        ctxt->myDoc = NULL;
    }
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
xmlDtdPtr
xmlSAXParseDTD(xmlSAXHandlerPtr sax, const xmlChar *ExternalID,
                          const xmlChar *SystemID) {
    xmlDtdPtr ret = NULL;
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr input = NULL;
    xmlChar* systemIdCanonic;
 
    if ((ExternalID == NULL) && (SystemID == NULL)) return(NULL);
 
    ctxt = xmlNewSAXParserCtxt(sax, NULL);
    if (ctxt == NULL) {
    return(NULL);
    }
 
    /* We are loading a DTD */
    ctxt->options |= XML_PARSE_DTDLOAD;
 
    /*
     * Canonicalise the system ID
     */
    systemIdCanonic = xmlCanonicPath(SystemID);
    if ((SystemID != NULL) && (systemIdCanonic == NULL)) {
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    /*
     * Ask the Entity resolver to load the damn thing
     */
 
    if ((ctxt->sax != NULL) && (ctxt->sax->resolveEntity != NULL))
    input = ctxt->sax->resolveEntity(ctxt->userData, ExternalID,
                                     systemIdCanonic);
    if (input == NULL) {
    xmlFreeParserCtxt(ctxt);
    if (systemIdCanonic != NULL)
        xmlFree(systemIdCanonic);
    return(NULL);
    }
 
    /*
     * plug some encoding conversion routines here.
     */
    if (xmlPushInput(ctxt, input) < 0) {
    xmlFreeParserCtxt(ctxt);
    if (systemIdCanonic != NULL)
        xmlFree(systemIdCanonic);
    return(NULL);
    }
 
    xmlDetectEncoding(ctxt);
 
    if (input->filename == NULL)
    input->filename = (char *) systemIdCanonic;
    else
    xmlFree(systemIdCanonic);
 
    /*
     * let's parse that entity knowing it's an external subset.
     */
    ctxt->inSubset = 2;
    ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0");
    if (ctxt->myDoc == NULL) {
    xmlErrMemory(ctxt, "New Doc failed");
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
    ctxt->myDoc->properties = XML_DOC_INTERNAL;
    ctxt->myDoc->extSubset = xmlNewDtd(ctxt->myDoc, BAD_CAST "none",
                                   ExternalID, SystemID);
    xmlParseExternalSubset(ctxt, ExternalID, SystemID);
 
    if (ctxt->myDoc != NULL) {
    if (ctxt->wellFormed) {
        ret = ctxt->myDoc->extSubset;
        ctxt->myDoc->extSubset = NULL;
        if (ret != NULL) {
        xmlNodePtr tmp;
 
        ret->doc = NULL;
        tmp = ret->children;
        while (tmp != NULL) {
            tmp->doc = NULL;
            tmp = tmp->next;
        }
        }
    } else {
        ret = NULL;
    }
        xmlFreeDoc(ctxt->myDoc);
        ctxt->myDoc = NULL;
    }
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
 
xmlDtdPtr
xmlParseDTD(const xmlChar *ExternalID, const xmlChar *SystemID) {
    return(xmlSAXParseDTD(NULL, ExternalID, SystemID));
}
#endif /* LIBXML_VALID_ENABLED */
 
/************************************************************************
 *                                  *
 *      Front ends when parsing an Entity           *
 *                                  *
 ************************************************************************/
 
int
xmlParseCtxtExternalEntity(xmlParserCtxtPtr ctx, const xmlChar *URL,
                   const xmlChar *ID, xmlNodePtr *lst) {
    void *userData;
 
    if (ctx == NULL) return(-1);
    /*
     * If the user provided their own SAX callbacks, then reuse the
     * userData callback field, otherwise the expected setup in a
     * DOM builder is to have userData == ctxt
     */
    if (ctx->userData == ctx)
        userData = NULL;
    else
        userData = ctx->userData;
    return xmlParseExternalEntityPrivate(ctx->myDoc, ctx, ctx->sax,
                                         userData, ctx->depth + 1,
                                         URL, ID, lst);
}
 
static xmlParserErrors
xmlParseExternalEntityPrivate(xmlDocPtr doc, xmlParserCtxtPtr oldctxt,
                  xmlSAXHandlerPtr sax,
              void *user_data, int depth, const xmlChar *URL,
              const xmlChar *ID, xmlNodePtr *list) {
    xmlParserCtxtPtr ctxt;
    xmlDocPtr newDoc;
    xmlNodePtr newRoot;
    xmlParserErrors ret = XML_ERR_OK;
 
    if (((depth > 40) &&
    ((oldctxt == NULL) || (oldctxt->options & XML_PARSE_HUGE) == 0)) ||
    (depth > 100)) {
    xmlFatalErrMsg(oldctxt, XML_ERR_ENTITY_LOOP,
                       "Maximum entity nesting depth exceeded");
        return(XML_ERR_ENTITY_LOOP);
    }
 
    if (list != NULL)
        *list = NULL;
    if ((URL == NULL) && (ID == NULL))
    return(XML_ERR_INTERNAL_ERROR);
    if (doc == NULL)
    return(XML_ERR_INTERNAL_ERROR);
 
    ctxt = xmlCreateEntityParserCtxtInternal(sax, user_data, URL, ID, NULL,
                                             oldctxt);
    if (ctxt == NULL) return(XML_WAR_UNDECLARED_ENTITY);
    if (oldctxt != NULL) {
        ctxt->nbErrors = oldctxt->nbErrors;
        ctxt->nbWarnings = oldctxt->nbWarnings;
    }
    xmlDetectSAX2(ctxt);
 
    newDoc = xmlNewDoc(BAD_CAST "1.0");
    if (newDoc == NULL) {
    xmlFreeParserCtxt(ctxt);
    return(XML_ERR_INTERNAL_ERROR);
    }
    newDoc->properties = XML_DOC_INTERNAL;
    if (doc) {
        newDoc->intSubset = doc->intSubset;
        newDoc->extSubset = doc->extSubset;
        if (doc->dict) {
            newDoc->dict = doc->dict;
            xmlDictReference(newDoc->dict);
        }
        if (doc->URL != NULL) {
            newDoc->URL = xmlStrdup(doc->URL);
        }
    }
    newRoot = xmlNewDocNode(newDoc, NULL, BAD_CAST "pseudoroot", NULL);
    if (newRoot == NULL) {
    if (sax != NULL)
    xmlFreeParserCtxt(ctxt);
    newDoc->intSubset = NULL;
    newDoc->extSubset = NULL;
        xmlFreeDoc(newDoc);
    return(XML_ERR_INTERNAL_ERROR);
    }
    xmlAddChild((xmlNodePtr) newDoc, newRoot);
    nodePush(ctxt, newDoc->children);
    if (doc == NULL) {
        ctxt->myDoc = newDoc;
    } else {
        ctxt->myDoc = doc;
        newRoot->doc = doc;
    }
 
    xmlDetectEncoding(ctxt);
 
    /*
     * Parse a possible text declaration first
     */
    if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
    xmlParseTextDecl(ctxt);
        /*
         * An XML-1.0 document can't reference an entity not XML-1.0
         */
        if ((xmlStrEqual(oldctxt->version, BAD_CAST "1.0")) &&
            (!xmlStrEqual(ctxt->input->version, BAD_CAST "1.0"))) {
            xmlFatalErrMsg(ctxt, XML_ERR_VERSION_MISMATCH,
                           "Version mismatch between document and entity\n");
        }
    }
 
    ctxt->instate = XML_PARSER_CONTENT;
    ctxt->depth = depth;
    if (oldctxt != NULL) {
    ctxt->_private = oldctxt->_private;
    ctxt->loadsubset = oldctxt->loadsubset;
    ctxt->validate = oldctxt->validate;
    ctxt->valid = oldctxt->valid;
    ctxt->replaceEntities = oldctxt->replaceEntities;
        if (oldctxt->validate) {
            ctxt->vctxt.error = oldctxt->vctxt.error;
            ctxt->vctxt.warning = oldctxt->vctxt.warning;
            ctxt->vctxt.userData = oldctxt->vctxt.userData;
            ctxt->vctxt.flags = oldctxt->vctxt.flags;
        }
    ctxt->external = oldctxt->external;
        if (ctxt->dict) xmlDictFree(ctxt->dict);
        ctxt->dict = oldctxt->dict;
        ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3);
        ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5);
        ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36);
        ctxt->dictNames = oldctxt->dictNames;
        ctxt->attsDefault = oldctxt->attsDefault;
        ctxt->attsSpecial = oldctxt->attsSpecial;
        ctxt->linenumbers = oldctxt->linenumbers;
    ctxt->record_info = oldctxt->record_info;
    ctxt->node_seq.maximum = oldctxt->node_seq.maximum;
    ctxt->node_seq.length = oldctxt->node_seq.length;
    ctxt->node_seq.buffer = oldctxt->node_seq.buffer;
    } else {
    /*
     * Doing validity checking on chunk without context
     * doesn't make sense
     */
    ctxt->_private = NULL;
    ctxt->validate = 0;
    ctxt->external = 2;
    ctxt->loadsubset = 0;
    }
 
    xmlParseContent(ctxt);
 
    if ((RAW == '<') && (NXT(1) == '/')) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    } else if (RAW != 0) {
    xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL);
    }
    if (ctxt->node != newDoc->children) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    }
 
    if (!ctxt->wellFormed) {
    ret = (xmlParserErrors)ctxt->errNo;
        if (oldctxt != NULL) {
            oldctxt->errNo = ctxt->errNo;
            oldctxt->wellFormed = 0;
            xmlCopyError(&ctxt->lastError, &oldctxt->lastError);
        }
    } else {
    if (list != NULL) {
        xmlNodePtr cur;
 
        /*
         * Return the newly created nodeset after unlinking it from
         * they pseudo parent.
         */
        cur = newDoc->children->children;
        *list = cur;
        while (cur != NULL) {
        cur->parent = NULL;
        cur = cur->next;
        }
            newDoc->children->children = NULL;
    }
    ret = XML_ERR_OK;
    }
 
    /*
     * Also record the size of the entity parsed
     */
    if (ctxt->input != NULL && oldctxt != NULL) {
        unsigned long consumed = ctxt->input->consumed;
 
        xmlSaturatedAddSizeT(&consumed, ctxt->input->cur - ctxt->input->base);
 
        xmlSaturatedAdd(&oldctxt->sizeentities, consumed);
        xmlSaturatedAdd(&oldctxt->sizeentities, ctxt->sizeentities);
 
        xmlSaturatedAdd(&oldctxt->sizeentcopy, consumed);
        xmlSaturatedAdd(&oldctxt->sizeentcopy, ctxt->sizeentcopy);
    }
 
    if (oldctxt != NULL) {
        ctxt->dict = NULL;
        ctxt->attsDefault = NULL;
        ctxt->attsSpecial = NULL;
        oldctxt->nbErrors = ctxt->nbErrors;
        oldctxt->nbWarnings = ctxt->nbWarnings;
        oldctxt->validate = ctxt->validate;
        oldctxt->valid = ctxt->valid;
        oldctxt->node_seq.maximum = ctxt->node_seq.maximum;
        oldctxt->node_seq.length = ctxt->node_seq.length;
        oldctxt->node_seq.buffer = ctxt->node_seq.buffer;
    }
    ctxt->node_seq.maximum = 0;
    ctxt->node_seq.length = 0;
    ctxt->node_seq.buffer = NULL;
    xmlFreeParserCtxt(ctxt);
    newDoc->intSubset = NULL;
    newDoc->extSubset = NULL;
    xmlFreeDoc(newDoc);
 
    return(ret);
}
 
#ifdef LIBXML_SAX1_ENABLED
int
xmlParseExternalEntity(xmlDocPtr doc, xmlSAXHandlerPtr sax, void *user_data,
      int depth, const xmlChar *URL, const xmlChar *ID, xmlNodePtr *lst) {
    return(xmlParseExternalEntityPrivate(doc, NULL, sax, user_data, depth, URL,
                               ID, lst));
}
 
int
xmlParseBalancedChunkMemory(xmlDocPtr doc, xmlSAXHandlerPtr sax,
     void *user_data, int depth, const xmlChar *string, xmlNodePtr *lst) {
    return xmlParseBalancedChunkMemoryRecover( doc, sax, user_data,
                                                depth, string, lst, 0 );
}
#endif /* LIBXML_SAX1_ENABLED */
 
static xmlParserErrors
xmlParseBalancedChunkMemoryInternal(xmlParserCtxtPtr oldctxt,
    const xmlChar *string, void *user_data, xmlNodePtr *lst) {
    xmlParserCtxtPtr ctxt;
    xmlDocPtr newDoc = NULL;
    xmlNodePtr newRoot;
    xmlSAXHandlerPtr oldsax = NULL;
    xmlNodePtr content = NULL;
    xmlNodePtr last = NULL;
    xmlParserErrors ret = XML_ERR_OK;
    xmlHashedString hprefix, huri;
    unsigned i;
 
    if (((oldctxt->depth > 40) && ((oldctxt->options & XML_PARSE_HUGE) == 0)) ||
        (oldctxt->depth >  100)) {
    xmlFatalErrMsg(oldctxt, XML_ERR_ENTITY_LOOP,
                       "Maximum entity nesting depth exceeded");
    return(XML_ERR_ENTITY_LOOP);
    }
 
 
    if (lst != NULL)
        *lst = NULL;
    if (string == NULL)
        return(XML_ERR_INTERNAL_ERROR);
 
    ctxt = xmlCreateDocParserCtxt(string);
    if (ctxt == NULL) return(XML_WAR_UNDECLARED_ENTITY);
    ctxt->nbErrors = oldctxt->nbErrors;
    ctxt->nbWarnings = oldctxt->nbWarnings;
    if (user_data != NULL)
    ctxt->userData = user_data;
    else
    ctxt->userData = ctxt;
    if (ctxt->dict != NULL) xmlDictFree(ctxt->dict);
    ctxt->dict = oldctxt->dict;
    ctxt->input_id = oldctxt->input_id;
    ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3);
    ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5);
    ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36);
 
    /*
     * Propagate namespaces down the entity
     *
     * Making entities and namespaces work correctly requires additional
     * changes, see xmlParseReference.
     */
 
    /* Default namespace */
    hprefix.name = NULL;
    hprefix.hashValue = 0;
    huri.name = xmlParserNsLookupUri(oldctxt, &hprefix);
    huri.hashValue = 0;
    if (huri.name != NULL)
        xmlParserNsPush(ctxt, NULL, &huri, NULL, 0);
 
    for (i = 0; i < oldctxt->nsdb->hashSize; i++) {
        xmlParserNsBucket *bucket = &oldctxt->nsdb->hash[i];
        const xmlChar **ns;
        xmlParserNsExtra *extra;
        unsigned nsIndex;
 
        if ((bucket->hashValue != 0) &&
            (bucket->index != INT_MAX)) {
            nsIndex = bucket->index;
            ns = &oldctxt->nsTab[nsIndex * 2];
            extra = &oldctxt->nsdb->extra[nsIndex];
 
            hprefix.name = ns[0];
            hprefix.hashValue = bucket->hashValue;
            huri.name = ns[1];
            huri.hashValue = extra->uriHashValue;
            /*
             * Don't copy SAX data to avoid a use-after-free with XML reader.
             * This matches the pre-2.12 behavior.
             */
            xmlParserNsPush(ctxt, &hprefix, &huri, NULL, 0);
        }
    }
 
    oldsax = ctxt->sax;
    ctxt->sax = oldctxt->sax;
    xmlDetectSAX2(ctxt);
    ctxt->replaceEntities = oldctxt->replaceEntities;
    ctxt->options = oldctxt->options;
 
    ctxt->_private = oldctxt->_private;
    if (oldctxt->myDoc == NULL) {
    newDoc = xmlNewDoc(BAD_CAST "1.0");
    if (newDoc == NULL) {
            ret = XML_ERR_INTERNAL_ERROR;
            goto error;
    }
    newDoc->properties = XML_DOC_INTERNAL;
    newDoc->dict = ctxt->dict;
    xmlDictReference(newDoc->dict);
    ctxt->myDoc = newDoc;
    } else {
    ctxt->myDoc = oldctxt->myDoc;
        content = ctxt->myDoc->children;
    last = ctxt->myDoc->last;
    }
    newRoot = xmlNewDocNode(ctxt->myDoc, NULL, BAD_CAST "pseudoroot", NULL);
    if (newRoot == NULL) {
        ret = XML_ERR_INTERNAL_ERROR;
        goto error;
    }
    ctxt->myDoc->children = NULL;
    ctxt->myDoc->last = NULL;
    xmlAddChild((xmlNodePtr) ctxt->myDoc, newRoot);
    nodePush(ctxt, ctxt->myDoc->children);
    ctxt->instate = XML_PARSER_CONTENT;
    ctxt->depth = oldctxt->depth;
 
    ctxt->validate = 0;
    ctxt->loadsubset = oldctxt->loadsubset;
    if ((oldctxt->validate) || (oldctxt->replaceEntities != 0)) {
    /*
     * ID/IDREF registration will be done in xmlValidateElement below
     */
    ctxt->loadsubset |= XML_SKIP_IDS;
    }
    ctxt->dictNames = oldctxt->dictNames;
    ctxt->attsDefault = oldctxt->attsDefault;
    ctxt->attsSpecial = oldctxt->attsSpecial;
 
    xmlParseContent(ctxt);
    if ((RAW == '<') && (NXT(1) == '/')) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    } else if (RAW != 0) {
    xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL);
    }
    if (ctxt->node != ctxt->myDoc->children) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    }
 
    if (!ctxt->wellFormed) {
    ret = (xmlParserErrors)ctxt->errNo;
        oldctxt->errNo = ctxt->errNo;
        oldctxt->wellFormed = 0;
        xmlCopyError(&ctxt->lastError, &oldctxt->lastError);
    } else {
        ret = XML_ERR_OK;
    }
 
    if ((lst != NULL) && (ret == XML_ERR_OK)) {
    xmlNodePtr cur;
 
    /*
     * Return the newly created nodeset after unlinking it from
     * they pseudo parent.
     */
    cur = ctxt->myDoc->children->children;
    *lst = cur;
    while (cur != NULL) {
#ifdef LIBXML_VALID_ENABLED
        if ((oldctxt->validate) && (oldctxt->wellFormed) &&
        (oldctxt->myDoc) && (oldctxt->myDoc->intSubset) &&
        (cur->type == XML_ELEMENT_NODE)) {
        oldctxt->valid &= xmlValidateElement(&oldctxt->vctxt,
            oldctxt->myDoc, cur);
        }
#endif /* LIBXML_VALID_ENABLED */
        cur->parent = NULL;
        cur = cur->next;
    }
    ctxt->myDoc->children->children = NULL;
    }
    if (ctxt->myDoc != NULL) {
    xmlFreeNode(ctxt->myDoc->children);
        ctxt->myDoc->children = content;
        ctxt->myDoc->last = last;
    }
 
    /*
     * Also record the size of the entity parsed
     */
    if (ctxt->input != NULL && oldctxt != NULL) {
        unsigned long consumed = ctxt->input->consumed;
 
        xmlSaturatedAddSizeT(&consumed, ctxt->input->cur - ctxt->input->base);
 
        xmlSaturatedAdd(&oldctxt->sizeentcopy, consumed);
        xmlSaturatedAdd(&oldctxt->sizeentcopy, ctxt->sizeentcopy);
    }
 
    oldctxt->nbErrors = ctxt->nbErrors;
    oldctxt->nbWarnings = ctxt->nbWarnings;
 
error:
    ctxt->sax = oldsax;
    ctxt->dict = NULL;
    ctxt->attsDefault = NULL;
    ctxt->attsSpecial = NULL;
    xmlFreeParserCtxt(ctxt);
    if (newDoc != NULL) {
    xmlFreeDoc(newDoc);
    }
 
    return(ret);
}
 
xmlParserErrors
xmlParseInNodeContext(xmlNodePtr node, const char *data, int datalen,
                      int options, xmlNodePtr *lst) {
    xmlParserCtxtPtr ctxt;
    xmlDocPtr doc = NULL;
    xmlNodePtr fake, cur;
    int nsnr = 0;
 
    xmlParserErrors ret = XML_ERR_OK;
 
    /*
     * check all input parameters, grab the document
     */
    if ((lst == NULL) || (node == NULL) || (data == NULL) || (datalen < 0))
        return(XML_ERR_INTERNAL_ERROR);
    switch (node->type) {
        case XML_ELEMENT_NODE:
        case XML_ATTRIBUTE_NODE:
        case XML_TEXT_NODE:
        case XML_CDATA_SECTION_NODE:
        case XML_ENTITY_REF_NODE:
        case XML_PI_NODE:
        case XML_COMMENT_NODE:
        case XML_DOCUMENT_NODE:
        case XML_HTML_DOCUMENT_NODE:
        break;
    default:
        return(XML_ERR_INTERNAL_ERROR);
 
    }
    while ((node != NULL) && (node->type != XML_ELEMENT_NODE) &&
           (node->type != XML_DOCUMENT_NODE) &&
       (node->type != XML_HTML_DOCUMENT_NODE))
    node = node->parent;
    if (node == NULL)
    return(XML_ERR_INTERNAL_ERROR);
    if (node->type == XML_ELEMENT_NODE)
    doc = node->doc;
    else
        doc = (xmlDocPtr) node;
    if (doc == NULL)
    return(XML_ERR_INTERNAL_ERROR);
 
    /*
     * allocate a context and set-up everything not related to the
     * node position in the tree
     */
    if (doc->type == XML_DOCUMENT_NODE)
    ctxt = xmlCreateMemoryParserCtxt((char *) data, datalen);
#ifdef LIBXML_HTML_ENABLED
    else if (doc->type == XML_HTML_DOCUMENT_NODE) {
    ctxt = htmlCreateMemoryParserCtxt((char *) data, datalen);
        /*
         * When parsing in context, it makes no sense to add implied
         * elements like html/body/etc...
         */
        options |= HTML_PARSE_NOIMPLIED;
    }
#endif
    else
        return(XML_ERR_INTERNAL_ERROR);
 
    if (ctxt == NULL)
        return(XML_ERR_NO_MEMORY);
 
    /*
     * Use input doc's dict if present, else assure XML_PARSE_NODICT is set.
     * We need a dictionary for xmlDetectSAX2, so if there's no doc dict
     * we must wait until the last moment to free the original one.
     */
    if (doc->dict != NULL) {
        if (ctxt->dict != NULL)
        xmlDictFree(ctxt->dict);
    ctxt->dict = doc->dict;
    } else
        options |= XML_PARSE_NODICT;
 
    if (doc->encoding != NULL) {
        xmlCharEncodingHandlerPtr hdlr;
 
        hdlr = xmlFindCharEncodingHandler((const char *) doc->encoding);
        if (hdlr != NULL) {
            xmlSwitchToEncoding(ctxt, hdlr);
    } else {
            return(XML_ERR_UNSUPPORTED_ENCODING);
        }
    }
 
    xmlCtxtUseOptionsInternal(ctxt, options);
    xmlDetectSAX2(ctxt);
    ctxt->myDoc = doc;
    /* parsing in context, i.e. as within existing content */
    ctxt->input_id = 2;
    ctxt->instate = XML_PARSER_CONTENT;
 
    fake = xmlNewDocComment(node->doc, NULL);
    if (fake == NULL) {
        xmlFreeParserCtxt(ctxt);
    return(XML_ERR_NO_MEMORY);
    }
    xmlAddChild(node, fake);
 
    if (node->type == XML_ELEMENT_NODE)
    nodePush(ctxt, node);
 
    if ((ctxt->html == 0) && (node->type == XML_ELEMENT_NODE)) {
    /*
     * initialize the SAX2 namespaces stack
     */
    cur = node;
    while ((cur != NULL) && (cur->type == XML_ELEMENT_NODE)) {
        xmlNsPtr ns = cur->nsDef;
            xmlHashedString hprefix, huri;
 
        while (ns != NULL) {
                hprefix = xmlDictLookupHashed(ctxt->dict, ns->prefix, -1);
                huri = xmlDictLookupHashed(ctxt->dict, ns->href, -1);
                if (xmlParserNsPush(ctxt, &hprefix, &huri, ns, 1) > 0)
                    nsnr++;
        ns = ns->next;
        }
        cur = cur->parent;
    }
    }
 
    if ((ctxt->validate) || (ctxt->replaceEntities != 0)) {
    /*
     * ID/IDREF registration will be done in xmlValidateElement below
     */
    ctxt->loadsubset |= XML_SKIP_IDS;
    }
 
#ifdef LIBXML_HTML_ENABLED
    if (doc->type == XML_HTML_DOCUMENT_NODE)
        __htmlParseContent(ctxt);
    else
#endif
    xmlParseContent(ctxt);
 
    xmlParserNsPop(ctxt, nsnr);
    if ((RAW == '<') && (NXT(1) == '/')) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    } else if (RAW != 0) {
    xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL);
    }
    if ((ctxt->node != NULL) && (ctxt->node != node)) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    ctxt->wellFormed = 0;
    }
 
    if (!ctxt->wellFormed) {
        if (ctxt->errNo == 0)
        ret = XML_ERR_INTERNAL_ERROR;
    else
        ret = (xmlParserErrors)ctxt->errNo;
    } else {
        ret = XML_ERR_OK;
    }
 
    /*
     * Return the newly created nodeset after unlinking it from
     * the pseudo sibling.
     */
 
    cur = fake->next;
    fake->next = NULL;
    node->last = fake;
 
    if (cur != NULL) {
    cur->prev = NULL;
    }
 
    *lst = cur;
 
    while (cur != NULL) {
    cur->parent = NULL;
    cur = cur->next;
    }
 
    xmlUnlinkNode(fake);
    xmlFreeNode(fake);
 
 
    if (ret != XML_ERR_OK) {
        xmlFreeNodeList(*lst);
    *lst = NULL;
    }
 
    if (doc->dict != NULL)
        ctxt->dict = NULL;
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
#ifdef LIBXML_SAX1_ENABLED
int
xmlParseBalancedChunkMemoryRecover(xmlDocPtr doc, xmlSAXHandlerPtr sax,
     void *user_data, int depth, const xmlChar *string, xmlNodePtr *lst,
     int recover) {
    xmlParserCtxtPtr ctxt;
    xmlDocPtr newDoc;
    xmlSAXHandlerPtr oldsax = NULL;
    xmlNodePtr content, newRoot;
    int ret = 0;
 
    if (depth > 40) {
    return(XML_ERR_ENTITY_LOOP);
    }
 
 
    if (lst != NULL)
        *lst = NULL;
    if (string == NULL)
        return(-1);
 
    ctxt = xmlCreateDocParserCtxt(string);
    if (ctxt == NULL) return(-1);
    ctxt->userData = ctxt;
    if (sax != NULL) {
    oldsax = ctxt->sax;
        ctxt->sax = sax;
    if (user_data != NULL)
        ctxt->userData = user_data;
    }
    newDoc = xmlNewDoc(BAD_CAST "1.0");
    if (newDoc == NULL) {
    xmlFreeParserCtxt(ctxt);
    return(-1);
    }
    newDoc->properties = XML_DOC_INTERNAL;
    if ((doc != NULL) && (doc->dict != NULL)) {
        xmlDictFree(ctxt->dict);
    ctxt->dict = doc->dict;
    xmlDictReference(ctxt->dict);
    ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3);
    ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5);
    ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36);
    ctxt->dictNames = 1;
        newDoc->dict = ctxt->dict;
        xmlDictReference(newDoc->dict);
    } else {
    xmlCtxtUseOptionsInternal(ctxt, XML_PARSE_NODICT);
    }
    /* doc == NULL is only supported for historic reasons */
    if (doc != NULL) {
    newDoc->intSubset = doc->intSubset;
    newDoc->extSubset = doc->extSubset;
    }
    newRoot = xmlNewDocNode(newDoc, NULL, BAD_CAST "pseudoroot", NULL);
    if (newRoot == NULL) {
    if (sax != NULL)
        ctxt->sax = oldsax;
    xmlFreeParserCtxt(ctxt);
    newDoc->intSubset = NULL;
    newDoc->extSubset = NULL;
        xmlFreeDoc(newDoc);
    return(-1);
    }
    xmlAddChild((xmlNodePtr) newDoc, newRoot);
    nodePush(ctxt, newRoot);
    /* doc == NULL is only supported for historic reasons */
    if (doc == NULL) {
    ctxt->myDoc = newDoc;
    } else {
    ctxt->myDoc = newDoc;
    /* Ensure that doc has XML spec namespace */
    xmlSearchNsByHref(doc, (xmlNodePtr)doc, XML_XML_NAMESPACE);
    newDoc->oldNs = doc->oldNs;
    }
    ctxt->instate = XML_PARSER_CONTENT;
    ctxt->input_id = 2;
    ctxt->depth = depth;
 
    /*
     * Doing validity checking on chunk doesn't make sense
     */
    ctxt->validate = 0;
    ctxt->loadsubset = 0;
    xmlDetectSAX2(ctxt);
 
    if ( doc != NULL ){
        content = doc->children;
        doc->children = NULL;
        xmlParseContent(ctxt);
        doc->children = content;
    }
    else {
        xmlParseContent(ctxt);
    }
    if ((RAW == '<') && (NXT(1) == '/')) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    } else if (RAW != 0) {
    xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL);
    }
    if (ctxt->node != newDoc->children) {
    xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
    }
 
    if (!ctxt->wellFormed) {
        if (ctxt->errNo == 0)
        ret = 1;
    else
        ret = ctxt->errNo;
    } else {
      ret = 0;
    }
 
    if ((lst != NULL) && ((ret == 0) || (recover == 1))) {
    xmlNodePtr cur;
 
    /*
     * Return the newly created nodeset after unlinking it from
     * they pseudo parent.
     */
    cur = newDoc->children->children;
    *lst = cur;
    while (cur != NULL) {
        xmlSetTreeDoc(cur, doc);
        cur->parent = NULL;
        cur = cur->next;
    }
    newDoc->children->children = NULL;
    }
 
    if (sax != NULL)
    ctxt->sax = oldsax;
    xmlFreeParserCtxt(ctxt);
    newDoc->intSubset = NULL;
    newDoc->extSubset = NULL;
    /* This leaks the namespace list if doc == NULL */
    newDoc->oldNs = NULL;
    xmlFreeDoc(newDoc);
 
    return(ret);
}
 
xmlDocPtr
xmlSAXParseEntity(xmlSAXHandlerPtr sax, const char *filename) {
    xmlDocPtr ret;
    xmlParserCtxtPtr ctxt;
 
    ctxt = xmlCreateFileParserCtxt(filename);
    if (ctxt == NULL) {
    return(NULL);
    }
    if (sax != NULL) {
    if (ctxt->sax != NULL)
        xmlFree(ctxt->sax);
        ctxt->sax = sax;
        ctxt->userData = NULL;
    }
 
    xmlParseExtParsedEnt(ctxt);
 
    if (ctxt->wellFormed)
    ret = ctxt->myDoc;
    else {
        ret = NULL;
        xmlFreeDoc(ctxt->myDoc);
        ctxt->myDoc = NULL;
    }
    if (sax != NULL)
        ctxt->sax = NULL;
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
xmlDocPtr
xmlParseEntity(const char *filename) {
    return(xmlSAXParseEntity(NULL, filename));
}
#endif /* LIBXML_SAX1_ENABLED */
 
static xmlParserCtxtPtr
xmlCreateEntityParserCtxtInternal(xmlSAXHandlerPtr sax, void *userData,
        const xmlChar *URL, const xmlChar *ID, const xmlChar *base,
        xmlParserCtxtPtr pctx) {
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr inputStream;
    char *directory = NULL;
    xmlChar *uri;
 
    ctxt = xmlNewSAXParserCtxt(sax, userData);
    if (ctxt == NULL) {
    return(NULL);
    }
 
    if (pctx != NULL) {
        ctxt->options = pctx->options;
        ctxt->_private = pctx->_private;
    ctxt->input_id = pctx->input_id;
    }
 
    /* Don't read from stdin. */
    if (xmlStrcmp(URL, BAD_CAST "-") == 0)
        URL = BAD_CAST "./-";
 
    uri = xmlBuildURI(URL, base);
 
    if (uri == NULL) {
    inputStream = xmlLoadExternalEntity((char *)URL, (char *)ID, ctxt);
    if (inputStream == NULL) {
        xmlFreeParserCtxt(ctxt);
        return(NULL);
    }
 
    inputPush(ctxt, inputStream);
 
    if ((ctxt->directory == NULL) && (directory == NULL))
        directory = xmlParserGetDirectory((char *)URL);
    if ((ctxt->directory == NULL) && (directory != NULL))
        ctxt->directory = directory;
    } else {
    inputStream = xmlLoadExternalEntity((char *)uri, (char *)ID, ctxt);
    if (inputStream == NULL) {
        xmlFree(uri);
        xmlFreeParserCtxt(ctxt);
        return(NULL);
    }
 
    inputPush(ctxt, inputStream);
 
    if ((ctxt->directory == NULL) && (directory == NULL))
        directory = xmlParserGetDirectory((char *)uri);
    if ((ctxt->directory == NULL) && (directory != NULL))
        ctxt->directory = directory;
    xmlFree(uri);
    }
    return(ctxt);
}
 
xmlParserCtxtPtr
xmlCreateEntityParserCtxt(const xmlChar *URL, const xmlChar *ID,
                      const xmlChar *base) {
    return xmlCreateEntityParserCtxtInternal(NULL, NULL, URL, ID, base, NULL);
 
}
 
/************************************************************************
 *                                  *
 *      Front ends when parsing from a file         *
 *                                  *
 ************************************************************************/
 
xmlParserCtxtPtr
xmlCreateURLParserCtxt(const char *filename, int options)
{
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr inputStream;
    char *directory = NULL;
 
    ctxt = xmlNewParserCtxt();
    if (ctxt == NULL) {
    xmlErrMemory(NULL, "cannot allocate parser context");
    return(NULL);
    }
 
    if (options)
    xmlCtxtUseOptionsInternal(ctxt, options);
    ctxt->linenumbers = 1;
 
    inputStream = xmlLoadExternalEntity(filename, NULL, ctxt);
    if (inputStream == NULL) {
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    inputPush(ctxt, inputStream);
    if ((ctxt->directory == NULL) && (directory == NULL))
        directory = xmlParserGetDirectory(filename);
    if ((ctxt->directory == NULL) && (directory != NULL))
        ctxt->directory = directory;
 
    return(ctxt);
}
 
xmlParserCtxtPtr
xmlCreateFileParserCtxt(const char *filename)
{
    return(xmlCreateURLParserCtxt(filename, 0));
}
 
#ifdef LIBXML_SAX1_ENABLED
xmlDocPtr
xmlSAXParseFileWithData(xmlSAXHandlerPtr sax, const char *filename,
                        int recovery, void *data) {
    xmlDocPtr ret;
    xmlParserCtxtPtr ctxt;
 
    xmlInitParser();
 
    ctxt = xmlCreateFileParserCtxt(filename);
    if (ctxt == NULL) {
    return(NULL);
    }
    if (sax != NULL) {
    if (ctxt->sax != NULL)
        xmlFree(ctxt->sax);
        ctxt->sax = sax;
    }
    xmlDetectSAX2(ctxt);
    if (data!=NULL) {
    ctxt->_private = data;
    }
 
    if (ctxt->directory == NULL)
        ctxt->directory = xmlParserGetDirectory(filename);
 
    ctxt->recovery = recovery;
 
    xmlParseDocument(ctxt);
 
    if ((ctxt->wellFormed) || recovery) {
        ret = ctxt->myDoc;
    if ((ret != NULL) && (ctxt->input->buf != NULL)) {
        if (ctxt->input->buf->compressed > 0)
        ret->compression = 9;
        else
        ret->compression = ctxt->input->buf->compressed;
    }
    }
    else {
       ret = NULL;
       xmlFreeDoc(ctxt->myDoc);
       ctxt->myDoc = NULL;
    }
    if (sax != NULL)
        ctxt->sax = NULL;
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
xmlDocPtr
xmlSAXParseFile(xmlSAXHandlerPtr sax, const char *filename,
                          int recovery) {
    return(xmlSAXParseFileWithData(sax,filename,recovery,NULL));
}
 
xmlDocPtr
xmlRecoverDoc(const xmlChar *cur) {
    return(xmlSAXParseDoc(NULL, cur, 1));
}
 
xmlDocPtr
xmlParseFile(const char *filename) {
    return(xmlSAXParseFile(NULL, filename, 0));
}
 
xmlDocPtr
xmlRecoverFile(const char *filename) {
    return(xmlSAXParseFile(NULL, filename, 1));
}
 
 
void
xmlSetupParserForBuffer(xmlParserCtxtPtr ctxt, const xmlChar* buffer,
                             const char* filename)
{
    xmlParserInputPtr input;
 
    if ((ctxt == NULL) || (buffer == NULL))
        return;
 
    input = xmlNewInputStream(ctxt);
    if (input == NULL) {
        xmlErrMemory(NULL, "parsing new buffer: out of memory\n");
        xmlClearParserCtxt(ctxt);
        return;
    }
 
    xmlClearParserCtxt(ctxt);
    if (filename != NULL)
        input->filename = (char *) xmlCanonicPath((const xmlChar *)filename);
    input->base = buffer;
    input->cur = buffer;
    input->end = &buffer[xmlStrlen(buffer)];
    inputPush(ctxt, input);
}
 
int
xmlSAXUserParseFile(xmlSAXHandlerPtr sax, void *user_data,
                    const char *filename) {
    int ret = 0;
    xmlParserCtxtPtr ctxt;
 
    ctxt = xmlCreateFileParserCtxt(filename);
    if (ctxt == NULL) return -1;
    if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler)
    xmlFree(ctxt->sax);
    ctxt->sax = sax;
    xmlDetectSAX2(ctxt);
 
    if (user_data != NULL)
    ctxt->userData = user_data;
 
    xmlParseDocument(ctxt);
 
    if (ctxt->wellFormed)
    ret = 0;
    else {
        if (ctxt->errNo != 0)
        ret = ctxt->errNo;
    else
        ret = -1;
    }
    if (sax != NULL)
    ctxt->sax = NULL;
    if (ctxt->myDoc != NULL) {
        xmlFreeDoc(ctxt->myDoc);
    ctxt->myDoc = NULL;
    }
    xmlFreeParserCtxt(ctxt);
 
    return ret;
}
#endif /* LIBXML_SAX1_ENABLED */
 
/************************************************************************
 *                                  *
 *      Front ends when parsing from memory         *
 *                                  *
 ************************************************************************/
 
xmlParserCtxtPtr
xmlCreateMemoryParserCtxt(const char *buffer, int size) {
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr input;
    xmlParserInputBufferPtr buf;
 
    if (buffer == NULL)
    return(NULL);
    if (size <= 0)
    return(NULL);
 
    ctxt = xmlNewParserCtxt();
    if (ctxt == NULL)
    return(NULL);
 
    buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
    if (buf == NULL) {
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    input = xmlNewInputStream(ctxt);
    if (input == NULL) {
    xmlFreeParserInputBuffer(buf);
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    input->filename = NULL;
    input->buf = buf;
    xmlBufResetInput(input->buf->buffer, input);
 
    inputPush(ctxt, input);
    return(ctxt);
}
 
#ifdef LIBXML_SAX1_ENABLED
xmlDocPtr
xmlSAXParseMemoryWithData(xmlSAXHandlerPtr sax, const char *buffer,
              int size, int recovery, void *data) {
    xmlDocPtr ret;
    xmlParserCtxtPtr ctxt;
 
    xmlInitParser();
 
    ctxt = xmlCreateMemoryParserCtxt(buffer, size);
    if (ctxt == NULL) return(NULL);
    if (sax != NULL) {
    if (ctxt->sax != NULL)
        xmlFree(ctxt->sax);
        ctxt->sax = sax;
    }
    xmlDetectSAX2(ctxt);
    if (data!=NULL) {
    ctxt->_private=data;
    }
 
    ctxt->recovery = recovery;
 
    xmlParseDocument(ctxt);
 
    if ((ctxt->wellFormed) || recovery) ret = ctxt->myDoc;
    else {
       ret = NULL;
       xmlFreeDoc(ctxt->myDoc);
       ctxt->myDoc = NULL;
    }
    if (sax != NULL)
    ctxt->sax = NULL;
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
xmlDocPtr
xmlSAXParseMemory(xmlSAXHandlerPtr sax, const char *buffer,
              int size, int recovery) {
    return xmlSAXParseMemoryWithData(sax, buffer, size, recovery, NULL);
}
 
xmlDocPtr xmlParseMemory(const char *buffer, int size) {
   return(xmlSAXParseMemory(NULL, buffer, size, 0));
}
 
xmlDocPtr xmlRecoverMemory(const char *buffer, int size) {
   return(xmlSAXParseMemory(NULL, buffer, size, 1));
}
 
int xmlSAXUserParseMemory(xmlSAXHandlerPtr sax, void *user_data,
              const char *buffer, int size) {
    int ret = 0;
    xmlParserCtxtPtr ctxt;
 
    xmlInitParser();
 
    ctxt = xmlCreateMemoryParserCtxt(buffer, size);
    if (ctxt == NULL) return -1;
    if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler)
        xmlFree(ctxt->sax);
    ctxt->sax = sax;
    xmlDetectSAX2(ctxt);
 
    if (user_data != NULL)
    ctxt->userData = user_data;
 
    xmlParseDocument(ctxt);
 
    if (ctxt->wellFormed)
    ret = 0;
    else {
        if (ctxt->errNo != 0)
        ret = ctxt->errNo;
    else
        ret = -1;
    }
    if (sax != NULL)
        ctxt->sax = NULL;
    if (ctxt->myDoc != NULL) {
        xmlFreeDoc(ctxt->myDoc);
    ctxt->myDoc = NULL;
    }
    xmlFreeParserCtxt(ctxt);
 
    return ret;
}
#endif /* LIBXML_SAX1_ENABLED */
 
xmlParserCtxtPtr
xmlCreateDocParserCtxt(const xmlChar *str) {
    xmlParserCtxtPtr ctxt;
    xmlParserInputPtr input;
    xmlParserInputBufferPtr buf;
 
    if (str == NULL)
    return(NULL);
 
    ctxt = xmlNewParserCtxt();
    if (ctxt == NULL)
    return(NULL);
 
    buf = xmlParserInputBufferCreateString(str);
    if (buf == NULL) {
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    input = xmlNewInputStream(ctxt);
    if (input == NULL) {
    xmlFreeParserInputBuffer(buf);
    xmlFreeParserCtxt(ctxt);
    return(NULL);
    }
 
    input->filename = NULL;
    input->buf = buf;
    xmlBufResetInput(input->buf->buffer, input);
 
    inputPush(ctxt, input);
    return(ctxt);
}
 
#ifdef LIBXML_SAX1_ENABLED
xmlDocPtr
xmlSAXParseDoc(xmlSAXHandlerPtr sax, const xmlChar *cur, int recovery) {
    xmlDocPtr ret;
    xmlParserCtxtPtr ctxt;
    xmlSAXHandlerPtr oldsax = NULL;
 
    if (cur == NULL) return(NULL);
 
 
    ctxt = xmlCreateDocParserCtxt(cur);
    if (ctxt == NULL) return(NULL);
    if (sax != NULL) {
        oldsax = ctxt->sax;
        ctxt->sax = sax;
        ctxt->userData = NULL;
    }
    xmlDetectSAX2(ctxt);
 
    xmlParseDocument(ctxt);
    if ((ctxt->wellFormed) || recovery) ret = ctxt->myDoc;
    else {
       ret = NULL;
       xmlFreeDoc(ctxt->myDoc);
       ctxt->myDoc = NULL;
    }
    if (sax != NULL)
    ctxt->sax = oldsax;
    xmlFreeParserCtxt(ctxt);
 
    return(ret);
}
 
xmlDocPtr
xmlParseDoc(const xmlChar *cur) {
    return(xmlSAXParseDoc(NULL, cur, 0));
}
#endif /* LIBXML_SAX1_ENABLED */
 
#ifdef LIBXML_LEGACY_ENABLED
/************************************************************************
 *                                  *
 *  Specific function to keep track of entities references      *
 *  and used by the XSLT debugger                   *
 *                                  *
 ************************************************************************/
 
static xmlEntityReferenceFunc xmlEntityRefFunc = NULL;
 
static void
xmlAddEntityReference(xmlEntityPtr ent, xmlNodePtr firstNode,
                      xmlNodePtr lastNode)
{
    if (xmlEntityRefFunc != NULL) {
        (*xmlEntityRefFunc) (ent, firstNode, lastNode);
    }
}
 
 
void
xmlSetEntityReferenceFunc(xmlEntityReferenceFunc func)
{
    xmlEntityRefFunc = func;
}
#endif /* LIBXML_LEGACY_ENABLED */
 
/************************************************************************
 *                                  *
 *  New set (2.6.0) of simpler and more flexible APIs       *
 *                                  *
 ************************************************************************/
 
#define DICT_FREE(str)                      \
    if ((str) && ((!dict) ||                \
        (xmlDictOwns(dict, (const xmlChar *)(str)) == 0)))  \
        xmlFree((char *)(str));
 
void
xmlCtxtReset(xmlParserCtxtPtr ctxt)
{
    xmlParserInputPtr input;
    xmlDictPtr dict;
 
    if (ctxt == NULL)
        return;
 
    dict = ctxt->dict;
 
    while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
        xmlFreeInputStream(input);
    }
    ctxt->inputNr = 0;
    ctxt->input = NULL;
 
    ctxt->spaceNr = 0;
    if (ctxt->spaceTab != NULL) {
    ctxt->spaceTab[0] = -1;
    ctxt->space = &ctxt->spaceTab[0];
    } else {
        ctxt->space = NULL;
    }
 
 
    ctxt->nodeNr = 0;
    ctxt->node = NULL;
 
    ctxt->nameNr = 0;
    ctxt->name = NULL;
 
    ctxt->nsNr = 0;
    xmlParserNsReset(ctxt->nsdb);
 
    DICT_FREE(ctxt->version);
    ctxt->version = NULL;
    DICT_FREE(ctxt->encoding);
    ctxt->encoding = NULL;
    DICT_FREE(ctxt->directory);
    ctxt->directory = NULL;
    DICT_FREE(ctxt->extSubURI);
    ctxt->extSubURI = NULL;
    DICT_FREE(ctxt->extSubSystem);
    ctxt->extSubSystem = NULL;
    if (ctxt->myDoc != NULL)
        xmlFreeDoc(ctxt->myDoc);
    ctxt->myDoc = NULL;
 
    ctxt->standalone = -1;
    ctxt->hasExternalSubset = 0;
    ctxt->hasPErefs = 0;
    ctxt->html = 0;
    ctxt->external = 0;
    ctxt->instate = XML_PARSER_START;
    ctxt->token = 0;
 
    ctxt->wellFormed = 1;
    ctxt->nsWellFormed = 1;
    ctxt->disableSAX = 0;
    ctxt->valid = 1;
#if 0
    ctxt->vctxt.userData = ctxt;
    ctxt->vctxt.error = xmlParserValidityError;
    ctxt->vctxt.warning = xmlParserValidityWarning;
#endif
    ctxt->record_info = 0;
    ctxt->checkIndex = 0;
    ctxt->endCheckState = 0;
    ctxt->inSubset = 0;
    ctxt->errNo = XML_ERR_OK;
    ctxt->depth = 0;
    ctxt->catalogs = NULL;
    ctxt->sizeentities = 0;
    ctxt->sizeentcopy = 0;
    xmlInitNodeInfoSeq(&ctxt->node_seq);
 
    if (ctxt->attsDefault != NULL) {
        xmlHashFree(ctxt->attsDefault, xmlHashDefaultDeallocator);
        ctxt->attsDefault = NULL;
    }
    if (ctxt->attsSpecial != NULL) {
        xmlHashFree(ctxt->attsSpecial, NULL);
        ctxt->attsSpecial = NULL;
    }
 
#ifdef LIBXML_CATALOG_ENABLED
    if (ctxt->catalogs != NULL)
    xmlCatalogFreeLocal(ctxt->catalogs);
#endif
    ctxt->nbErrors = 0;
    ctxt->nbWarnings = 0;
    if (ctxt->lastError.code != XML_ERR_OK)
        xmlResetError(&ctxt->lastError);
}
 
int
xmlCtxtResetPush(xmlParserCtxtPtr ctxt, const char *chunk,
                 int size, const char *filename, const char *encoding)
{
    xmlParserInputPtr inputStream;
    xmlParserInputBufferPtr buf;
 
    if (ctxt == NULL)
        return(1);
 
    buf = xmlAllocParserInputBuffer(XML_CHAR_ENCODING_NONE);
    if (buf == NULL)
        return(1);
 
    if (ctxt == NULL) {
        xmlFreeParserInputBuffer(buf);
        return(1);
    }
 
    xmlCtxtReset(ctxt);
 
    if (filename == NULL) {
        ctxt->directory = NULL;
    } else {
        ctxt->directory = xmlParserGetDirectory(filename);
    }
 
    inputStream = xmlNewInputStream(ctxt);
    if (inputStream == NULL) {
        xmlFreeParserInputBuffer(buf);
        return(1);
    }
 
    if (filename == NULL)
        inputStream->filename = NULL;
    else
        inputStream->filename = (char *)
            xmlCanonicPath((const xmlChar *) filename);
    inputStream->buf = buf;
    xmlBufResetInput(buf->buffer, inputStream);
 
    inputPush(ctxt, inputStream);
 
    if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
        (ctxt->input->buf != NULL)) {
        size_t pos = ctxt->input->cur - ctxt->input->base;
        int res;
 
        res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
        xmlBufUpdateInput(ctxt->input->buf->buffer, ctxt->input, pos);
        if (res < 0) {
            xmlFatalErr(ctxt, ctxt->input->buf->error, NULL);
            xmlHaltParser(ctxt);
            return(1);
        }
    }
 
    if (encoding != NULL) {
        xmlCharEncodingHandlerPtr hdlr;
 
        hdlr = xmlFindCharEncodingHandler(encoding);
        if (hdlr != NULL) {
            xmlSwitchToEncoding(ctxt, hdlr);
    } else {
        xmlFatalErrMsgStr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
                  "Unsupported encoding %s\n", BAD_CAST encoding);
        }
    }
 
    return(0);
}
 
 
static int
xmlCtxtUseOptionsInternal(xmlParserCtxtPtr ctxt, int options)
{
    if (ctxt == NULL)
        return(-1);
    if (options & XML_PARSE_RECOVER) {
        ctxt->recovery = 1;
        options -= XML_PARSE_RECOVER;
    ctxt->options |= XML_PARSE_RECOVER;
    } else
        ctxt->recovery = 0;
    if (options & XML_PARSE_DTDLOAD) {
        ctxt->loadsubset = XML_DETECT_IDS;
        options -= XML_PARSE_DTDLOAD;
    ctxt->options |= XML_PARSE_DTDLOAD;
    } else
        ctxt->loadsubset = 0;
    if (options & XML_PARSE_DTDATTR) {
        ctxt->loadsubset |= XML_COMPLETE_ATTRS;
        options -= XML_PARSE_DTDATTR;
    ctxt->options |= XML_PARSE_DTDATTR;
    }
    if (options & XML_PARSE_NOENT) {
        ctxt->replaceEntities = 1;
        /* ctxt->loadsubset |= XML_DETECT_IDS; */
        options -= XML_PARSE_NOENT;
    ctxt->options |= XML_PARSE_NOENT;
    } else
        ctxt->replaceEntities = 0;
    if (options & XML_PARSE_PEDANTIC) {
        ctxt->pedantic = 1;
        options -= XML_PARSE_PEDANTIC;
    ctxt->options |= XML_PARSE_PEDANTIC;
    } else
        ctxt->pedantic = 0;
    if (options & XML_PARSE_NOBLANKS) {
        ctxt->keepBlanks = 0;
        ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
        options -= XML_PARSE_NOBLANKS;
    ctxt->options |= XML_PARSE_NOBLANKS;
    } else
        ctxt->keepBlanks = 1;
    if (options & XML_PARSE_DTDVALID) {
        ctxt->validate = 1;
        if (options & XML_PARSE_NOWARNING)
            ctxt->vctxt.warning = NULL;
        if (options & XML_PARSE_NOERROR)
            ctxt->vctxt.error = NULL;
        options -= XML_PARSE_DTDVALID;
    ctxt->options |= XML_PARSE_DTDVALID;
    } else
        ctxt->validate = 0;
    if (options & XML_PARSE_NOWARNING) {
        ctxt->sax->warning = NULL;
        options -= XML_PARSE_NOWARNING;
    }
    if (options & XML_PARSE_NOERROR) {
        ctxt->sax->error = NULL;
        ctxt->sax->fatalError = NULL;
        options -= XML_PARSE_NOERROR;
    }
#ifdef LIBXML_SAX1_ENABLED
    if (options & XML_PARSE_SAX1) {
        ctxt->sax->startElementNs = NULL;
        ctxt->sax->endElementNs = NULL;
        ctxt->sax->initialized = 1;
        options -= XML_PARSE_SAX1;
    ctxt->options |= XML_PARSE_SAX1;
    }
#endif /* LIBXML_SAX1_ENABLED */
    if (options & XML_PARSE_NODICT) {
        ctxt->dictNames = 0;
        options -= XML_PARSE_NODICT;
    ctxt->options |= XML_PARSE_NODICT;
    } else {
        ctxt->dictNames = 1;
    }
    if (options & XML_PARSE_NOCDATA) {
        ctxt->sax->cdataBlock = NULL;
        options -= XML_PARSE_NOCDATA;
    ctxt->options |= XML_PARSE_NOCDATA;
    }
    if (options & XML_PARSE_NSCLEAN) {
    ctxt->options |= XML_PARSE_NSCLEAN;
        options -= XML_PARSE_NSCLEAN;
    }
    if (options & XML_PARSE_NONET) {
    ctxt->options |= XML_PARSE_NONET;
        options -= XML_PARSE_NONET;
    }
    if (options & XML_PARSE_COMPACT) {
    ctxt->options |= XML_PARSE_COMPACT;
        options -= XML_PARSE_COMPACT;
    }
    if (options & XML_PARSE_OLD10) {
    ctxt->options |= XML_PARSE_OLD10;
        options -= XML_PARSE_OLD10;
    }
    if (options & XML_PARSE_NOBASEFIX) {
    ctxt->options |= XML_PARSE_NOBASEFIX;
        options -= XML_PARSE_NOBASEFIX;
    }
    if (options & XML_PARSE_HUGE) {
    ctxt->options |= XML_PARSE_HUGE;
        options -= XML_PARSE_HUGE;
        if (ctxt->dict != NULL)
            xmlDictSetLimit(ctxt->dict, 0);
    }
    if (options & XML_PARSE_OLDSAX) {
    ctxt->options |= XML_PARSE_OLDSAX;
        options -= XML_PARSE_OLDSAX;
    }
    if (options & XML_PARSE_IGNORE_ENC) {
    ctxt->options |= XML_PARSE_IGNORE_ENC;
        options -= XML_PARSE_IGNORE_ENC;
    }
    if (options & XML_PARSE_BIG_LINES) {
    ctxt->options |= XML_PARSE_BIG_LINES;
        options -= XML_PARSE_BIG_LINES;
    }
    ctxt->linenumbers = 1;
    return (options);
}
 
int
xmlCtxtUseOptions(xmlParserCtxtPtr ctxt, int options)
{
   return(xmlCtxtUseOptionsInternal(ctxt, options));
}
 
void
xmlCtxtSetMaxAmplification(xmlParserCtxtPtr ctxt, unsigned maxAmpl)
{
    ctxt->maxAmpl = maxAmpl;
}
 
static xmlDocPtr
xmlDoRead(xmlParserCtxtPtr ctxt, const char *URL, const char *encoding,
          int options, int reuse)
{
    xmlDocPtr ret;
 
    xmlCtxtUseOptionsInternal(ctxt, options);
    if (encoding != NULL) {
        xmlCharEncodingHandlerPtr hdlr;
 
        /*
         * TODO: We should consider to set XML_PARSE_IGNORE_ENC if the
         * caller provided an encoding. Otherwise, we might switch to
         * the encoding from the XML declaration which is likely to
         * break things. Also see xmlSwitchInputEncoding.
         */
    hdlr = xmlFindCharEncodingHandler(encoding);
    if (hdlr != NULL)
        xmlSwitchToEncoding(ctxt, hdlr);
    }
    if ((URL != NULL) && (ctxt->input != NULL) &&
        (ctxt->input->filename == NULL))
        ctxt->input->filename = (char *) xmlStrdup((const xmlChar *) URL);
    xmlParseDocument(ctxt);
    if ((ctxt->wellFormed) || ctxt->recovery)
        ret = ctxt->myDoc;
    else {
        ret = NULL;
    if (ctxt->myDoc != NULL) {
        xmlFreeDoc(ctxt->myDoc);
    }
    }
    ctxt->myDoc = NULL;
    if (!reuse) {
    xmlFreeParserCtxt(ctxt);
    }
 
    return (ret);
}
 
xmlDocPtr
xmlReadDoc(const xmlChar * cur, const char *URL, const char *encoding, int options)
{
    xmlParserCtxtPtr ctxt;
 
    if (cur == NULL)
        return (NULL);
    xmlInitParser();
 
    ctxt = xmlCreateDocParserCtxt(cur);
    if (ctxt == NULL)
        return (NULL);
    return (xmlDoRead(ctxt, URL, encoding, options, 0));
}
 
xmlDocPtr
xmlReadFile(const char *filename, const char *encoding, int options)
{
    xmlParserCtxtPtr ctxt;
 
    xmlInitParser();
    ctxt = xmlCreateURLParserCtxt(filename, options);
    if (ctxt == NULL)
        return (NULL);
    return (xmlDoRead(ctxt, NULL, encoding, options, 0));
}
 
xmlDocPtr
xmlReadMemory(const char *buffer, int size, const char *URL, const char *encoding, int options)
{
    xmlParserCtxtPtr ctxt;
 
    xmlInitParser();
    ctxt = xmlCreateMemoryParserCtxt(buffer, size);
    if (ctxt == NULL)
        return (NULL);
    return (xmlDoRead(ctxt, URL, encoding, options, 0));
}
 
xmlDocPtr
xmlReadFd(int fd, const char *URL, const char *encoding, int options)
{
    xmlParserCtxtPtr ctxt;
    xmlParserInputBufferPtr input;
    xmlParserInputPtr stream;
 
    if (fd < 0)
        return (NULL);
    xmlInitParser();
 
    input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
    if (input == NULL)
        return (NULL);
    input->closecallback = NULL;
    ctxt = xmlNewParserCtxt();
    if (ctxt == NULL) {
        xmlFreeParserInputBuffer(input);
        return (NULL);
    }
    stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (stream == NULL) {
        xmlFreeParserInputBuffer(input);
    xmlFreeParserCtxt(ctxt);
        return (NULL);
    }
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, URL, encoding, options, 0));
}
 
xmlDocPtr
xmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
          void *ioctx, const char *URL, const char *encoding, int options)
{
    xmlParserCtxtPtr ctxt;
    xmlParserInputBufferPtr input;
    xmlParserInputPtr stream;
 
    if (ioread == NULL)
        return (NULL);
    xmlInitParser();
 
    input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                         XML_CHAR_ENCODING_NONE);
    if (input == NULL) {
        if (ioclose != NULL)
            ioclose(ioctx);
        return (NULL);
    }
    ctxt = xmlNewParserCtxt();
    if (ctxt == NULL) {
        xmlFreeParserInputBuffer(input);
        return (NULL);
    }
    stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (stream == NULL) {
        xmlFreeParserInputBuffer(input);
    xmlFreeParserCtxt(ctxt);
        return (NULL);
    }
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, URL, encoding, options, 0));
}
 
xmlDocPtr
xmlCtxtReadDoc(xmlParserCtxtPtr ctxt, const xmlChar *str,
               const char *URL, const char *encoding, int options)
{
    xmlParserInputBufferPtr input;
    xmlParserInputPtr stream;
 
    if (ctxt == NULL)
        return (NULL);
    if (str == NULL)
        return (NULL);
    xmlInitParser();
 
    xmlCtxtReset(ctxt);
 
    input = xmlParserInputBufferCreateString(str);
    if (input == NULL) {
    return(NULL);
    }
 
    stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (stream == NULL) {
    xmlFreeParserInputBuffer(input);
    return(NULL);
    }
 
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, URL, encoding, options, 1));
}
 
xmlDocPtr
xmlCtxtReadFile(xmlParserCtxtPtr ctxt, const char *filename,
                const char *encoding, int options)
{
    xmlParserInputPtr stream;
 
    if (filename == NULL)
        return (NULL);
    if (ctxt == NULL)
        return (NULL);
    xmlInitParser();
 
    xmlCtxtReset(ctxt);
 
    stream = xmlLoadExternalEntity(filename, NULL, ctxt);
    if (stream == NULL) {
        return (NULL);
    }
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, NULL, encoding, options, 1));
}
 
xmlDocPtr
xmlCtxtReadMemory(xmlParserCtxtPtr ctxt, const char *buffer, int size,
                  const char *URL, const char *encoding, int options)
{
    xmlParserInputBufferPtr input;
    xmlParserInputPtr stream;
 
    if (ctxt == NULL)
        return (NULL);
    if (buffer == NULL)
        return (NULL);
    xmlInitParser();
 
    xmlCtxtReset(ctxt);
 
    input = xmlParserInputBufferCreateStatic(buffer, size,
                                             XML_CHAR_ENCODING_NONE);
    if (input == NULL) {
    return(NULL);
    }
 
    stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (stream == NULL) {
    xmlFreeParserInputBuffer(input);
    return(NULL);
    }
 
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, URL, encoding, options, 1));
}
 
xmlDocPtr
xmlCtxtReadFd(xmlParserCtxtPtr ctxt, int fd,
              const char *URL, const char *encoding, int options)
{
    xmlParserInputBufferPtr input;
    xmlParserInputPtr stream;
 
    if (fd < 0)
        return (NULL);
    if (ctxt == NULL)
        return (NULL);
    xmlInitParser();
 
    xmlCtxtReset(ctxt);
 
 
    input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
    if (input == NULL)
        return (NULL);
    input->closecallback = NULL;
    stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (stream == NULL) {
        xmlFreeParserInputBuffer(input);
        return (NULL);
    }
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, URL, encoding, options, 1));
}
 
xmlDocPtr
xmlCtxtReadIO(xmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
              xmlInputCloseCallback ioclose, void *ioctx,
          const char *URL,
              const char *encoding, int options)
{
    xmlParserInputBufferPtr input;
    xmlParserInputPtr stream;
 
    if (ioread == NULL)
        return (NULL);
    if (ctxt == NULL)
        return (NULL);
    xmlInitParser();
 
    xmlCtxtReset(ctxt);
 
    input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                         XML_CHAR_ENCODING_NONE);
    if (input == NULL) {
        if (ioclose != NULL)
            ioclose(ioctx);
        return (NULL);
    }
    stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
    if (stream == NULL) {
        xmlFreeParserInputBuffer(input);
        return (NULL);
    }
    inputPush(ctxt, stream);
    return (xmlDoRead(ctxt, URL, encoding, options, 1));
}