decode.c File Reference

#include "jscript.h"
#include "wine/debug.h"

Include dependency graph for decode.c:

Go to the source code of this file.

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (jscript)
static BOOL	decode_dword (const WCHAR *p, DWORD *ret)
HRESULT	decode_source (WCHAR *code)

Variables
static const unsigned char	pick_encoding [64]
static const unsigned char	dictionary [][3]
static const int	digits []

Function Documentation

decode_dword()

static BOOL decode_dword ( const WCHAR *  p, DWORD *  ret  )

static

Definition at line 89 of file decode.c.

{
    DWORD i;
 
    for(i=0; i<6; i++) {
        if(p[i] >= ARRAY_SIZE(digits) || digits[p[i]] == 0xff)
            return FALSE;
    }
    if(p[6] != '=' || p[7] != '=')
        return FALSE;
 
    *ret = (digits[p[0]] << 2)
        + (digits[p[1]] >> 4)
        + ((digits[p[1]] & 0xf) << 12)
        + ((digits[p[2]] >> 2) << 8)
        + ((digits[p[2]] & 0x3) << 22)
        + (digits[p[3]] << 16)
        + ((digits[p[4]] << 2) << 24)
        + ((digits[p[5]] >> 4) << 24);
    return TRUE;
}

Referenced by decode_source().

decode_source()

HRESULT decode_source

(

WCHAR *

code

)

Definition at line 111 of file decode.c.

{
    const WCHAR *src = code;
    WCHAR *dst = code;
 
    static const WCHAR decode_beginW[] = {'#','@','~','^'};
    static const WCHAR decode_endW[] = {'^','#','~','@'};
 
    while(*src) {
        if(!wcsncmp(src, decode_beginW, ARRAY_SIZE(decode_beginW))) {
            DWORD len, i, j=0, csum, s=0;
 
            src += ARRAY_SIZE(decode_beginW);
 
            if(!decode_dword(src, &len))
                return JS_E_INVALID_CHAR;
 
            src += 8;
 
            for(i=0; i<len; i++) {
                if (src[i] == '@') {
                    switch(src[++i]) {
                    case '#':
                        s += dst[j++] = '\r';
                        break;
                    case '&':
                        s += dst[j++] = '\n';
                        break;
                    case '!':
                        s += dst[j++] = '<';
                        break;
                    case '*':
                        s += dst[j++] = '>';
                        break;
                    case '$':
                        s += dst[j++] = '@';
                        break;
                    default:
                        FIXME("unescape %c\n", src[i]);
                        return E_FAIL;
                    }
                }else if (src[i] < 128) {
                    s += dst[j] = dictionary[src[i]][pick_encoding[j%64]];
                    j++;
                }else {
                    FIXME("Unsupported char %c\n", src[i]);
                    return E_FAIL;
                }
            }
 
            src += len;
            dst += j;
 
            if(!decode_dword(src, &csum) || s != csum)
                return JS_E_INVALID_CHAR;
            src += 8;
 
            if(wcsncmp(src, decode_endW, ARRAY_SIZE(decode_endW)))
                return JS_E_INVALID_CHAR;
            src += ARRAY_SIZE(decode_endW);
        }else {
            *dst++ = *src++;
        }
    }
 
    *dst = 0;
 
    TRACE("decoded %s\n", debugstr_w(code));
    return S_OK;
}

Referenced by compile_script().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

jscript

)

Variable Documentation

dictionary

const unsigned char dictionary[][3]

static

Definition at line 37 of file decode.c.

digits

const int digits[]

static

Initial value:

= {
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
    0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
    0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
    0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
    0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
    0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
    0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff}

Definition at line 71 of file decode.c.

Referenced by __get_fdigit(), __get_fdigit_or_sep(), _gcvt_s(), _Initialize_get_float(), LocaleTest::_money_put_get2(), LocaleTest::_num_put_get(), _Stl_string_to_double(), af_latin_metrics_check_digits(), complete_digits(), CRYPT_AsnDecodeGeneralizedTime(), decode_dword(), do_process_key(), format_float(), MCI_GetDWord(), msvcrt_int_to_base32(), msvcrt_int_to_base32_w(), NumPutGetTest::num_put_float(), number(), numberf(), streamout(), strntoi(), ui2ipv4(), and WPRINTF_GetLen().

pick_encoding

const unsigned char pick_encoding[64]

static

Initial value:

= {
    1,2,0,1,2,0,2,0,0,2,0,2,1,0,2,0,
    1,0,2,0,1,1,2,0,0,2,1,0,2,0,0,2,
    1,1,0,2,0,2,0,1,0,1,1,2,0,1,0,2,
    1,0,2,0,1,1,2,0,0,1,1,2,0,1,0,2}

Definition at line 31 of file decode.c.

Referenced by decode_source().