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Classes | Macros | Typedefs | Functions
zlib.h File Reference
#include "windef.h"
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Classes

struct  z_stream_s
 
struct  gz_header_s
 

Macros

#define FAR
 
#define z_const   const
 
#define Z_NO_FLUSH   0
 
#define Z_PARTIAL_FLUSH   1
 
#define Z_SYNC_FLUSH   2
 
#define Z_FULL_FLUSH   3
 
#define Z_FINISH   4
 
#define Z_BLOCK   5
 
#define Z_TREES   6
 
#define Z_OK   0
 
#define Z_STREAM_END   1
 
#define Z_NEED_DICT   2
 
#define Z_ERRNO   (-1)
 
#define Z_STREAM_ERROR   (-2)
 
#define Z_DATA_ERROR   (-3)
 
#define Z_MEM_ERROR   (-4)
 
#define Z_BUF_ERROR   (-5)
 
#define Z_VERSION_ERROR   (-6)
 
#define Z_NO_COMPRESSION   0
 
#define Z_BEST_SPEED   1
 
#define Z_BEST_COMPRESSION   9
 
#define Z_DEFAULT_COMPRESSION   (-1)
 
#define Z_FILTERED   1
 
#define Z_HUFFMAN_ONLY   2
 
#define Z_RLE   3
 
#define Z_FIXED   4
 
#define Z_DEFAULT_STRATEGY   0
 
#define Z_BINARY   0
 
#define Z_TEXT   1
 
#define Z_ASCII   Z_TEXT /* for compatibility with 1.2.2 and earlier */
 
#define Z_UNKNOWN   2
 
#define Z_DEFLATED   8
 
#define Z_NULL   0 /* for initializing zalloc, zfree, opaque */
 
#define MAX_WBITS   15 /* 32K LZ77 window */
 
#define MAX_MEM_LEVEL   9
 

Typedefs

typedef unsigned char Byte
 
typedef unsigned int uInt
 
typedef unsigned long uLong
 
typedef Byte FAR Bytef
 
typedef void FAR * voidpf
 
typedef char FAR charf
 
typedef int FAR intf
 
typedef unsigned char uch
 
typedef uch FAR uchf
 
typedef unsigned short ush
 
typedef ush FAR ushf
 
typedef unsigned long ulg
 
typedef voidpf(* alloc_func) (voidpf opaque, uInt items, uInt size)
 
typedef void(* free_func) (voidpf opaque, voidpf address)
 
typedef struct z_stream_s z_stream
 
typedef z_stream FAR * z_streamp
 
typedef struct gz_header_s gz_header
 
typedef gz_header FAR * gz_headerp
 

Functions

int inflateInit (z_streamp strm) DECLSPEC_HIDDEN
 
int inflateInit2 (z_streamp strm, int windowBits) DECLSPEC_HIDDEN
 
int inflate (z_streamp strm, int flush) DECLSPEC_HIDDEN
 
int inflateEnd (z_streamp strm) DECLSPEC_HIDDEN
 
int deflateInit (z_streamp strm, int level) DECLSPEC_HIDDEN
 
int deflateInit2 (z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy) DECLSPEC_HIDDEN
 
int deflate (z_streamp strm, int flush) DECLSPEC_HIDDEN
 
int deflateEnd (z_streamp strm) DECLSPEC_HIDDEN
 

Macro Definition Documentation

◆ FAR

#define FAR

Definition at line 32 of file zlib.h.

◆ MAX_MEM_LEVEL

#define MAX_MEM_LEVEL   9

Definition at line 150 of file zlib.h.

◆ MAX_WBITS

#define MAX_WBITS   15 /* 32K LZ77 window */

Definition at line 149 of file zlib.h.

◆ Z_ASCII

#define Z_ASCII   Z_TEXT /* for compatibility with 1.2.2 and earlier */

Definition at line 140 of file zlib.h.

◆ Z_BEST_COMPRESSION

#define Z_BEST_COMPRESSION   9

Definition at line 127 of file zlib.h.

◆ Z_BEST_SPEED

#define Z_BEST_SPEED   1

Definition at line 126 of file zlib.h.

◆ Z_BINARY

#define Z_BINARY   0

Definition at line 138 of file zlib.h.

◆ Z_BLOCK

#define Z_BLOCK   5

Definition at line 108 of file zlib.h.

◆ Z_BUF_ERROR

#define Z_BUF_ERROR   (-5)

Definition at line 119 of file zlib.h.

◆ z_const

#define z_const   const

Definition at line 33 of file zlib.h.

◆ Z_DATA_ERROR

#define Z_DATA_ERROR   (-3)

Definition at line 117 of file zlib.h.

◆ Z_DEFAULT_COMPRESSION

#define Z_DEFAULT_COMPRESSION   (-1)

Definition at line 128 of file zlib.h.

◆ Z_DEFAULT_STRATEGY

#define Z_DEFAULT_STRATEGY   0

Definition at line 135 of file zlib.h.

◆ Z_DEFLATED

#define Z_DEFLATED   8

Definition at line 144 of file zlib.h.

◆ Z_ERRNO

#define Z_ERRNO   (-1)

Definition at line 115 of file zlib.h.

◆ Z_FILTERED

#define Z_FILTERED   1

Definition at line 131 of file zlib.h.

◆ Z_FINISH

#define Z_FINISH   4

Definition at line 107 of file zlib.h.

◆ Z_FIXED

#define Z_FIXED   4

Definition at line 134 of file zlib.h.

◆ Z_FULL_FLUSH

#define Z_FULL_FLUSH   3

Definition at line 106 of file zlib.h.

◆ Z_HUFFMAN_ONLY

#define Z_HUFFMAN_ONLY   2

Definition at line 132 of file zlib.h.

◆ Z_MEM_ERROR

#define Z_MEM_ERROR   (-4)

Definition at line 118 of file zlib.h.

◆ Z_NEED_DICT

#define Z_NEED_DICT   2

Definition at line 114 of file zlib.h.

◆ Z_NO_COMPRESSION

#define Z_NO_COMPRESSION   0

Definition at line 125 of file zlib.h.

◆ Z_NO_FLUSH

#define Z_NO_FLUSH   0

Definition at line 103 of file zlib.h.

◆ Z_NULL

#define Z_NULL   0 /* for initializing zalloc, zfree, opaque */

Definition at line 147 of file zlib.h.

◆ Z_OK

#define Z_OK   0

Definition at line 112 of file zlib.h.

◆ Z_PARTIAL_FLUSH

#define Z_PARTIAL_FLUSH   1

Definition at line 104 of file zlib.h.

◆ Z_RLE

#define Z_RLE   3

Definition at line 133 of file zlib.h.

◆ Z_STREAM_END

#define Z_STREAM_END   1

Definition at line 113 of file zlib.h.

◆ Z_STREAM_ERROR

#define Z_STREAM_ERROR   (-2)

Definition at line 116 of file zlib.h.

◆ Z_SYNC_FLUSH

#define Z_SYNC_FLUSH   2

Definition at line 105 of file zlib.h.

◆ Z_TEXT

#define Z_TEXT   1

Definition at line 139 of file zlib.h.

◆ Z_TREES

#define Z_TREES   6

Definition at line 109 of file zlib.h.

◆ Z_UNKNOWN

#define Z_UNKNOWN   2

Definition at line 141 of file zlib.h.

◆ Z_VERSION_ERROR

#define Z_VERSION_ERROR   (-6)

Definition at line 120 of file zlib.h.

Typedef Documentation

◆ alloc_func

typedef voidpf(* alloc_func) (voidpf opaque, uInt items, uInt size)

Definition at line 51 of file zlib.h.

◆ Byte

typedef unsigned char Byte

Definition at line 35 of file zlib.h.

◆ Bytef

typedef Byte FAR Bytef

Definition at line 39 of file zlib.h.

◆ charf

typedef char FAR charf

Definition at line 42 of file zlib.h.

◆ free_func

typedef void(* free_func) (voidpf opaque, voidpf address)

Definition at line 52 of file zlib.h.

◆ gz_header

typedef struct gz_header_s gz_header

◆ gz_headerp

typedef gz_header FAR* gz_headerp

Definition at line 101 of file zlib.h.

◆ intf

typedef int FAR intf

Definition at line 43 of file zlib.h.

◆ uch

typedef unsigned char uch

Definition at line 45 of file zlib.h.

◆ uchf

typedef uch FAR uchf

Definition at line 46 of file zlib.h.

◆ uInt

typedef unsigned int uInt

Definition at line 36 of file zlib.h.

◆ ulg

typedef unsigned long ulg

Definition at line 49 of file zlib.h.

◆ uLong

typedef unsigned long uLong

Definition at line 37 of file zlib.h.

◆ ush

typedef unsigned short ush

Definition at line 47 of file zlib.h.

◆ ushf

typedef ush FAR ushf

Definition at line 48 of file zlib.h.

◆ voidpf

typedef void FAR* voidpf

Definition at line 40 of file zlib.h.

◆ z_stream

typedef struct z_stream_s z_stream

◆ z_streamp

typedef z_stream FAR* z_streamp

Definition at line 78 of file zlib.h.

Function Documentation

◆ deflate()

int deflate ( z_streamp  strm,
int  flush 
)

Definition at line 815 of file deflate.c.

818{
819 int old_flush; /* value of flush param for previous deflate call */
820 deflate_state *s;
821
822 if (deflateStateCheck(strm) || flush > Z_BLOCK || flush < 0) {
823 return Z_STREAM_ERROR;
824 }
825 s = strm->state;
826
827 if (strm->next_out == Z_NULL ||
828 (strm->avail_in != 0 && strm->next_in == Z_NULL) ||
829 (s->status == FINISH_STATE && flush != Z_FINISH)) {
830 ERR_RETURN(strm, Z_STREAM_ERROR);
831 }
832 if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
833
834 old_flush = s->last_flush;
835 s->last_flush = flush;
836
837 /* Flush as much pending output as possible */
838 if (s->pending != 0) {
839 flush_pending(strm);
840 if (strm->avail_out == 0) {
841 /* Since avail_out is 0, deflate will be called again with
842 * more output space, but possibly with both pending and
843 * avail_in equal to zero. There won't be anything to do,
844 * but this is not an error situation so make sure we
845 * return OK instead of BUF_ERROR at next call of deflate:
846 */
847 s->last_flush = -1;
848 return Z_OK;
849 }
850
851 /* Make sure there is something to do and avoid duplicate consecutive
852 * flushes. For repeated and useless calls with Z_FINISH, we keep
853 * returning Z_STREAM_END instead of Z_BUF_ERROR.
854 */
855 } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
856 flush != Z_FINISH) {
857 ERR_RETURN(strm, Z_BUF_ERROR);
858 }
859
860 /* User must not provide more input after the first FINISH: */
861 if (s->status == FINISH_STATE && strm->avail_in != 0) {
862 ERR_RETURN(strm, Z_BUF_ERROR);
863 }
864
865 /* Write the header */
866 if (s->status == INIT_STATE && s->wrap == 0)
867 s->status = BUSY_STATE;
868 if (s->status == INIT_STATE) {
869 /* zlib header */
870 uInt header = (Z_DEFLATED + ((s->w_bits - 8) << 4)) << 8;
871 uInt level_flags;
872
873 if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
874 level_flags = 0;
875 else if (s->level < 6)
876 level_flags = 1;
877 else if (s->level == 6)
878 level_flags = 2;
879 else
880 level_flags = 3;
881 header |= (level_flags << 6);
882 if (s->strstart != 0) header |= PRESET_DICT;
883 header += 31 - (header % 31);
884
885 putShortMSB(s, header);
886
887 /* Save the adler32 of the preset dictionary: */
888 if (s->strstart != 0) {
889 putShortMSB(s, (uInt)(strm->adler >> 16));
890 putShortMSB(s, (uInt)(strm->adler & 0xffff));
891 }
892 strm->adler = adler32(0L, Z_NULL, 0);
893 s->status = BUSY_STATE;
894
895 /* Compression must start with an empty pending buffer */
896 flush_pending(strm);
897 if (s->pending != 0) {
898 s->last_flush = -1;
899 return Z_OK;
900 }
901 }
902#ifdef GZIP
903 if (s->status == GZIP_STATE) {
904 /* gzip header */
905 strm->adler = crc32(0L, Z_NULL, 0);
906 put_byte(s, 31);
907 put_byte(s, 139);
908 put_byte(s, 8);
909 if (s->gzhead == Z_NULL) {
910 put_byte(s, 0);
911 put_byte(s, 0);
912 put_byte(s, 0);
913 put_byte(s, 0);
914 put_byte(s, 0);
915 put_byte(s, s->level == 9 ? 2 :
916 (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
917 4 : 0));
918 put_byte(s, OS_CODE);
919 s->status = BUSY_STATE;
920
921 /* Compression must start with an empty pending buffer */
922 flush_pending(strm);
923 if (s->pending != 0) {
924 s->last_flush = -1;
925 return Z_OK;
926 }
927 }
928 else {
929 put_byte(s, (s->gzhead->text ? 1 : 0) +
930 (s->gzhead->hcrc ? 2 : 0) +
931 (s->gzhead->extra == Z_NULL ? 0 : 4) +
932 (s->gzhead->name == Z_NULL ? 0 : 8) +
933 (s->gzhead->comment == Z_NULL ? 0 : 16)
934 );
935 put_byte(s, (Byte)(s->gzhead->time & 0xff));
936 put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));
937 put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));
938 put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));
939 put_byte(s, s->level == 9 ? 2 :
940 (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
941 4 : 0));
942 put_byte(s, s->gzhead->os & 0xff);
943 if (s->gzhead->extra != Z_NULL) {
944 put_byte(s, s->gzhead->extra_len & 0xff);
945 put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
946 }
947 if (s->gzhead->hcrc)
948 strm->adler = crc32(strm->adler, s->pending_buf,
949 s->pending);
950 s->gzindex = 0;
951 s->status = EXTRA_STATE;
952 }
953 }
954 if (s->status == EXTRA_STATE) {
955 if (s->gzhead->extra != Z_NULL) {
956 ulg beg = s->pending; /* start of bytes to update crc */
957 uInt left = (s->gzhead->extra_len & 0xffff) - s->gzindex;
958 while (s->pending + left > s->pending_buf_size) {
959 uInt copy = s->pending_buf_size - s->pending;
960 zmemcpy(s->pending_buf + s->pending,
961 s->gzhead->extra + s->gzindex, copy);
962 s->pending = s->pending_buf_size;
963 HCRC_UPDATE(beg);
964 s->gzindex += copy;
965 flush_pending(strm);
966 if (s->pending != 0) {
967 s->last_flush = -1;
968 return Z_OK;
969 }
970 beg = 0;
971 left -= copy;
972 }
973 zmemcpy(s->pending_buf + s->pending,
974 s->gzhead->extra + s->gzindex, left);
975 s->pending += left;
976 HCRC_UPDATE(beg);
977 s->gzindex = 0;
978 }
979 s->status = NAME_STATE;
980 }
981 if (s->status == NAME_STATE) {
982 if (s->gzhead->name != Z_NULL) {
983 ulg beg = s->pending; /* start of bytes to update crc */
984 int val;
985 do {
986 if (s->pending == s->pending_buf_size) {
987 HCRC_UPDATE(beg);
988 flush_pending(strm);
989 if (s->pending != 0) {
990 s->last_flush = -1;
991 return Z_OK;
992 }
993 beg = 0;
994 }
995 val = s->gzhead->name[s->gzindex++];
996 put_byte(s, val);
997 } while (val != 0);
998 HCRC_UPDATE(beg);
999 s->gzindex = 0;
1000 }
1001 s->status = COMMENT_STATE;
1002 }
1003 if (s->status == COMMENT_STATE) {
1004 if (s->gzhead->comment != Z_NULL) {
1005 ulg beg = s->pending; /* start of bytes to update crc */
1006 int val;
1007 do {
1008 if (s->pending == s->pending_buf_size) {
1009 HCRC_UPDATE(beg);
1010 flush_pending(strm);
1011 if (s->pending != 0) {
1012 s->last_flush = -1;
1013 return Z_OK;
1014 }
1015 beg = 0;
1016 }
1017 val = s->gzhead->comment[s->gzindex++];
1018 put_byte(s, val);
1019 } while (val != 0);
1020 HCRC_UPDATE(beg);
1021 }
1022 s->status = HCRC_STATE;
1023 }
1024 if (s->status == HCRC_STATE) {
1025 if (s->gzhead->hcrc) {
1026 if (s->pending + 2 > s->pending_buf_size) {
1027 flush_pending(strm);
1028 if (s->pending != 0) {
1029 s->last_flush = -1;
1030 return Z_OK;
1031 }
1032 }
1033 put_byte(s, (Byte)(strm->adler & 0xff));
1034 put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
1035 strm->adler = crc32(0L, Z_NULL, 0);
1036 }
1037 s->status = BUSY_STATE;
1038
1039 /* Compression must start with an empty pending buffer */
1040 flush_pending(strm);
1041 if (s->pending != 0) {
1042 s->last_flush = -1;
1043 return Z_OK;
1044 }
1045 }
1046#endif
1047
1048 /* Start a new block or continue the current one.
1049 */
1050 if (strm->avail_in != 0 || s->lookahead != 0 ||
1051 (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
1052 block_state bstate;
1053
1054 bstate = s->level == 0 ? deflate_stored(s, flush) :
1055 s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
1056 s->strategy == Z_RLE ? deflate_rle(s, flush) :
1057 (*(configuration_table[s->level].func))(s, flush);
1058
1059 if (bstate == finish_started || bstate == finish_done) {
1060 s->status = FINISH_STATE;
1061 }
1062 if (bstate == need_more || bstate == finish_started) {
1063 if (strm->avail_out == 0) {
1064 s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
1065 }
1066 return Z_OK;
1067 /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
1068 * of deflate should use the same flush parameter to make sure
1069 * that the flush is complete. So we don't have to output an
1070 * empty block here, this will be done at next call. This also
1071 * ensures that for a very small output buffer, we emit at most
1072 * one empty block.
1073 */
1074 }
1075 if (bstate == block_done) {
1076 if (flush == Z_PARTIAL_FLUSH) {
1077 _tr_align(s);
1078 } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
1079 _tr_stored_block(s, (char*)0, 0L, 0);
1080 /* For a full flush, this empty block will be recognized
1081 * as a special marker by inflate_sync().
1082 */
1083 if (flush == Z_FULL_FLUSH) {
1084 CLEAR_HASH(s); /* forget history */
1085 if (s->lookahead == 0) {
1086 s->strstart = 0;
1087 s->block_start = 0L;
1088 s->insert = 0;
1089 }
1090 }
1091 }
1092 flush_pending(strm);
1093 if (strm->avail_out == 0) {
1094 s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
1095 return Z_OK;
1096 }
1097 }
1098 }
1099
1100 if (flush != Z_FINISH) return Z_OK;
1101 if (s->wrap <= 0) return Z_STREAM_END;
1102
1103 /* Write the trailer */
1104#ifdef GZIP
1105 if (s->wrap == 2) {
1106 put_byte(s, (Byte)(strm->adler & 0xff));
1107 put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
1108 put_byte(s, (Byte)((strm->adler >> 16) & 0xff));
1109 put_byte(s, (Byte)((strm->adler >> 24) & 0xff));
1110 put_byte(s, (Byte)(strm->total_in & 0xff));
1111 put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));
1112 put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));
1113 put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));
1114 }
1115 else
1116#endif
1117 {
1118 putShortMSB(s, (uInt)(strm->adler >> 16));
1119 putShortMSB(s, (uInt)(strm->adler & 0xffff));
1120 }
1121 flush_pending(strm);
1122 /* If avail_out is zero, the application will call deflate again
1123 * to flush the rest.
1124 */
1125 if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */
1126 return s->pending != 0 ? Z_OK : Z_STREAM_END;
1127}
copy
INT copy(TCHAR source[MAX_PATH], TCHAR dest[MAX_PATH], INT append, DWORD lpdwFlags, BOOL bTouch)
Definition: copy.c:51
while
while(CdLookupNextInitialFileDirent(IrpContext, Fcb, FileContext))
configuration_table
const config configuration_table[10]
Definition: deflate.c:128
block_state
block_state
Definition: deflate.c:66
finish_started
@ finish_started
Definition: deflate.c:69
block_done
@ block_done
Definition: deflate.c:68
need_more
@ need_more
Definition: deflate.c:67
finish_done
@ finish_done
Definition: deflate.c:70
HCRC_UPDATE
#define HCRC_UPDATE(beg)
Definition: deflate.c:807
deflate_stored
block_state deflate_stored(deflate_state *s, int flush)
Definition: deflate.c:1690
putShortMSB
void putShortMSB(deflate_state *s, uInt b)
Definition: deflate.c:768
flush_pending
void flush_pending(z_streamp strm)
Definition: deflate.c:782
deflate_huff
block_state deflate_huff(deflate_state *s, int flush)
Definition: deflate.c:2184
deflateStateCheck
int deflateStateCheck(z_streamp strm)
Definition: deflate.c:389
RANK
#define RANK(f)
Definition: deflate.c:149
CLEAR_HASH
#define CLEAR_HASH(s)
Definition: deflate.c:186
deflate_rle
block_state deflate_rle(deflate_state *s, int flush)
Definition: deflate.c:2110
FINISH_STATE
#define FINISH_STATE
Definition: deflate.h:63
COMMENT_STATE
#define COMMENT_STATE
Definition: deflate.h:60
HCRC_STATE
#define HCRC_STATE
Definition: deflate.h:61
GZIP_STATE
#define GZIP_STATE
Definition: deflate.h:56
BUSY_STATE
#define BUSY_STATE
Definition: deflate.h:62
put_byte
#define put_byte(s, c)
Definition: deflate.h:276
INIT_STATE
#define INIT_STATE
Definition: deflate.h:54
NAME_STATE
#define NAME_STATE
Definition: deflate.h:59
EXTRA_STATE
#define EXTRA_STATE
Definition: deflate.h:58
crc32
#define crc32(crc, buf, len)
Definition: inflate.c:1081
zmemcpy
#define zmemcpy
Definition: inflate.c:38
adler32
static uLong adler32(uLong adler, const Bytef *buf, uInt len)
Definition: inflate.c:72
Z_HUFFMAN_ONLY
#define Z_HUFFMAN_ONLY
Definition: zlib.h:134
Z_DEFLATED
#define Z_DEFLATED
Definition: zlib.h:146
Z_BUF_ERROR
#define Z_BUF_ERROR
Definition: zlib.h:121
Z_BLOCK
#define Z_BLOCK
Definition: zlib.h:110
Z_STREAM_END
#define Z_STREAM_END
Definition: zlib.h:115
Z_FINISH
#define Z_FINISH
Definition: zlib.h:109
uInt
unsigned int uInt
Definition: zlib.h:38
Z_OK
#define Z_OK
Definition: zlib.h:114
Z_STREAM_ERROR
#define Z_STREAM_ERROR
Definition: zlib.h:118
ulg
unsigned long ulg
Definition: zlib.h:51
Z_NO_FLUSH
#define Z_NO_FLUSH
Definition: zlib.h:105
Z_NULL
#define Z_NULL
Definition: zlib.h:149
Z_PARTIAL_FLUSH
#define Z_PARTIAL_FLUSH
Definition: zlib.h:106
Byte
unsigned char Byte
Definition: zlib.h:37
Z_FULL_FLUSH
#define Z_FULL_FLUSH
Definition: zlib.h:108
Z_RLE
#define Z_RLE
Definition: zlib.h:135
ERR_RETURN
#define ERR_RETURN(strm, err)
Definition: zutil.h:41
PRESET_DICT
#define PRESET_DICT
Definition: zutil.h:68
OS_CODE
#define OS_CODE
Definition: zutil.h:139
level
GLint level
Definition: gl.h:1546
s
GLdouble s
Definition: gl.h:2039
func
GLenum func
Definition: glext.h:6028
left
GLint left
Definition: glext.h:7726
val
GLuint GLfloat * val
Definition: glext.h:7180
L
#define L(x)
Definition: ntvdm.h:50
flush
int flush
Definition: zlib.h:309
define::name
char * name
Definition: compiler.c:66
internal_state
Definition: inflate.c:30
_tr_stored_block
void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf, ulg stored_len, int last)
Definition: trees.c:863
_tr_align
void ZLIB_INTERNAL _tr_align(deflate_state *s)
Definition: trees.c:897

Referenced by deflateParams().

◆ deflateEnd()

int deflateEnd ( z_streamp  strm)

Definition at line 1130 of file deflate.c.

1132{
1133 int status;
1134
1135 if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
1136
1137 status = strm->state->status;
1138
1139 /* Deallocate in reverse order of allocations: */
1140 TRY_FREE(strm, strm->state->pending_buf);
1141 TRY_FREE(strm, strm->state->head);
1142 TRY_FREE(strm, strm->state->prev);
1143 TRY_FREE(strm, strm->state->window);
1144
1145 ZFREE(strm, strm->state);
1146 strm->state = Z_NULL;
1147
1148 return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
1149}
ZFREE
#define ZFREE(strm, addr)
Definition: inflate.c:51
TRY_FREE
#define TRY_FREE(s, p)
Definition: inflate.c:52
Z_DATA_ERROR
#define Z_DATA_ERROR
Definition: zlib.h:119
status
Definition: ps.c:97
status::state
DWORD state
Definition: ps.c:98

Referenced by deflateCopy(), and deflateInit2_().

◆ deflateInit()

int deflateInit ( z_streamp  strm,
int  level 
)

◆ deflateInit2()

int deflateInit2 ( z_streamp  strm,
int  level,
int  method,
int  windowBits,
int  memLevel,
int  strategy 
)

◆ inflate()

int inflate ( z_streamp  strm,
int  flush 
)

Definition at line 1257 of file inflate.c.

1258{
1259 struct inflate_state FAR *state;
1260 z_const unsigned char FAR *next; /* next input */
1261 unsigned char FAR *put; /* next output */
1262 unsigned have, left; /* available input and output */
1263 unsigned long hold; /* bit buffer */
1264 unsigned bits; /* bits in bit buffer */
1265 unsigned in, out; /* save starting available input and output */
1266 unsigned copy; /* number of stored or match bytes to copy */
1267 unsigned char FAR *from; /* where to copy match bytes from */
1268 code here; /* current decoding table entry */
1269 code last; /* parent table entry */
1270 unsigned len; /* length to copy for repeats, bits to drop */
1271 int ret; /* return code */
1272#ifdef GUNZIP
1273 unsigned char hbuf[4]; /* buffer for gzip header crc calculation */
1274#endif
1275 static const unsigned short order[19] = /* permutation of code lengths */
1276 {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
1277
1278 if (inflateStateCheck(strm) || strm->next_out == Z_NULL ||
1279 (strm->next_in == Z_NULL && strm->avail_in != 0))
1280 return Z_STREAM_ERROR;
1281
1282 state = (struct inflate_state FAR *)strm->state;
1283 if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */
1284 LOAD();
1285 in = have;
1286 out = left;
1287 ret = Z_OK;
1288 for (;;)
1289 switch (state->mode) {
1290 case HEAD:
1291 if (state->wrap == 0) {
1292 state->mode = TYPEDO;
1293 break;
1294 }
1295 NEEDBITS(16);
1296#ifdef GUNZIP
1297 if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */
1298 if (state->wbits == 0)
1299 state->wbits = 15;
1300 state->check = crc32(0L, Z_NULL, 0);
1301 CRC2(state->check, hold);
1302 INITBITS();
1303 state->mode = FLAGS;
1304 break;
1305 }
1306 state->flags = 0; /* expect zlib header */
1307 if (state->head != Z_NULL)
1308 state->head->done = -1;
1309 if (!(state->wrap & 1) || /* check if zlib header allowed */
1310#else
1311 if (
1312#endif
1313 ((BITS(8) << 8) + (hold >> 8)) % 31) {
1314 strm->msg = (char *)"incorrect header check";
1315 state->mode = BAD;
1316 break;
1317 }
1318 if (BITS(4) != Z_DEFLATED) {
1319 strm->msg = (char *)"unknown compression method";
1320 state->mode = BAD;
1321 break;
1322 }
1323 DROPBITS(4);
1324 len = BITS(4) + 8;
1325 if (state->wbits == 0)
1326 state->wbits = len;
1327 if (len > 15 || len > state->wbits) {
1328 strm->msg = (char *)"invalid window size";
1329 state->mode = BAD;
1330 break;
1331 }
1332 state->dmax = 1U << len;
1333 Tracev((stderr, "inflate: zlib header ok\n"));
1334 strm->adler = state->check = adler32(0L, Z_NULL, 0);
1335 state->mode = hold & 0x200 ? DICTID : TYPE;
1336 INITBITS();
1337 break;
1338#ifdef GUNZIP
1339 case FLAGS:
1340 NEEDBITS(16);
1341 state->flags = (int)(hold);
1342 if ((state->flags & 0xff) != Z_DEFLATED) {
1343 strm->msg = (char *)"unknown compression method";
1344 state->mode = BAD;
1345 break;
1346 }
1347 if (state->flags & 0xe000) {
1348 strm->msg = (char *)"unknown header flags set";
1349 state->mode = BAD;
1350 break;
1351 }
1352 if (state->head != Z_NULL)
1353 state->head->text = (int)((hold >> 8) & 1);
1354 if ((state->flags & 0x0200) && (state->wrap & 4))
1355 CRC2(state->check, hold);
1356 INITBITS();
1357 state->mode = TIME;
1358 case TIME:
1359 NEEDBITS(32);
1360 if (state->head != Z_NULL)
1361 state->head->time = hold;
1362 if ((state->flags & 0x0200) && (state->wrap & 4))
1363 CRC4(state->check, hold);
1364 INITBITS();
1365 state->mode = OS;
1366 case OS:
1367 NEEDBITS(16);
1368 if (state->head != Z_NULL) {
1369 state->head->xflags = (int)(hold & 0xff);
1370 state->head->os = (int)(hold >> 8);
1371 }
1372 if ((state->flags & 0x0200) && (state->wrap & 4))
1373 CRC2(state->check, hold);
1374 INITBITS();
1375 state->mode = EXLEN;
1376 case EXLEN:
1377 if (state->flags & 0x0400) {
1378 NEEDBITS(16);
1379 state->length = (unsigned)(hold);
1380 if (state->head != Z_NULL)
1381 state->head->extra_len = (unsigned)hold;
1382 if ((state->flags & 0x0200) && (state->wrap & 4))
1383 CRC2(state->check, hold);
1384 INITBITS();
1385 }
1386 else if (state->head != Z_NULL)
1387 state->head->extra = Z_NULL;
1388 state->mode = EXTRA;
1389 case EXTRA:
1390 if (state->flags & 0x0400) {
1391 copy = state->length;
1392 if (copy > have) copy = have;
1393 if (copy) {
1394 if (state->head != Z_NULL &&
1395 state->head->extra != Z_NULL) {
1396 len = state->head->extra_len - state->length;
1397 zmemcpy(state->head->extra + len, next,
1398 len + copy > state->head->extra_max ?
1399 state->head->extra_max - len : copy);
1400 }
1401 if ((state->flags & 0x0200) && (state->wrap & 4))
1402 state->check = crc32(state->check, next, copy);
1403 have -= copy;
1404 next += copy;
1405 state->length -= copy;
1406 }
1407 if (state->length) goto inf_leave;
1408 }
1409 state->length = 0;
1410 state->mode = NAME;
1411 case NAME:
1412 if (state->flags & 0x0800) {
1413 if (have == 0) goto inf_leave;
1414 copy = 0;
1415 do {
1416 len = (unsigned)(next[copy++]);
1417 if (state->head != Z_NULL &&
1418 state->head->name != Z_NULL &&
1419 state->length < state->head->name_max)
1420 state->head->name[state->length++] = (Bytef)len;
1421 } while (len && copy < have);
1422 if ((state->flags & 0x0200) && (state->wrap & 4))
1423 state->check = crc32(state->check, next, copy);
1424 have -= copy;
1425 next += copy;
1426 if (len) goto inf_leave;
1427 }
1428 else if (state->head != Z_NULL)
1429 state->head->name = Z_NULL;
1430 state->length = 0;
1431 state->mode = COMMENT;
1432 case COMMENT:
1433 if (state->flags & 0x1000) {
1434 if (have == 0) goto inf_leave;
1435 copy = 0;
1436 do {
1437 len = (unsigned)(next[copy++]);
1438 if (state->head != Z_NULL &&
1439 state->head->comment != Z_NULL &&
1440 state->length < state->head->comm_max)
1441 state->head->comment[state->length++] = (Bytef)len;
1442 } while (len && copy < have);
1443 if ((state->flags & 0x0200) && (state->wrap & 4))
1444 state->check = crc32(state->check, next, copy);
1445 have -= copy;
1446 next += copy;
1447 if (len) goto inf_leave;
1448 }
1449 else if (state->head != Z_NULL)
1450 state->head->comment = Z_NULL;
1451 state->mode = HCRC;
1452 case HCRC:
1453 if (state->flags & 0x0200) {
1454 NEEDBITS(16);
1455 if ((state->wrap & 4) && hold != (state->check & 0xffff)) {
1456 strm->msg = (char *)"header crc mismatch";
1457 state->mode = BAD;
1458 break;
1459 }
1460 INITBITS();
1461 }
1462 if (state->head != Z_NULL) {
1463 state->head->hcrc = (int)((state->flags >> 9) & 1);
1464 state->head->done = 1;
1465 }
1466 strm->adler = state->check = crc32(0L, Z_NULL, 0);
1467 state->mode = TYPE;
1468 break;
1469#endif
1470 case DICTID:
1471 NEEDBITS(32);
1472 strm->adler = state->check = ZSWAP32(hold);
1473 INITBITS();
1474 state->mode = DICT;
1475 case DICT:
1476 if (state->havedict == 0) {
1477 RESTORE();
1478 return Z_NEED_DICT;
1479 }
1480 strm->adler = state->check = adler32(0L, Z_NULL, 0);
1481 state->mode = TYPE;
1482 case TYPE:
1483 if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;
1484 case TYPEDO:
1485 if (state->last) {
1486 BYTEBITS();
1487 state->mode = CHECK;
1488 break;
1489 }
1490 NEEDBITS(3);
1491 state->last = BITS(1);
1492 DROPBITS(1);
1493 switch (BITS(2)) {
1494 case 0: /* stored block */
1495 Tracev((stderr, "inflate: stored block%s\n",
1496 state->last ? " (last)" : ""));
1497 state->mode = STORED;
1498 break;
1499 case 1: /* fixed block */
1500 fixedtables(state);
1501 Tracev((stderr, "inflate: fixed codes block%s\n",
1502 state->last ? " (last)" : ""));
1503 state->mode = LEN_; /* decode codes */
1504 if (flush == Z_TREES) {
1505 DROPBITS(2);
1506 goto inf_leave;
1507 }
1508 break;
1509 case 2: /* dynamic block */
1510 Tracev((stderr, "inflate: dynamic codes block%s\n",
1511 state->last ? " (last)" : ""));
1512 state->mode = TABLE;
1513 break;
1514 case 3:
1515 strm->msg = (char *)"invalid block type";
1516 state->mode = BAD;
1517 }
1518 DROPBITS(2);
1519 break;
1520 case STORED:
1521 BYTEBITS(); /* go to byte boundary */
1522 NEEDBITS(32);
1523 if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
1524 strm->msg = (char *)"invalid stored block lengths";
1525 state->mode = BAD;
1526 break;
1527 }
1528 state->length = (unsigned)hold & 0xffff;
1529 Tracev((stderr, "inflate: stored length %u\n",
1530 state->length));
1531 INITBITS();
1532 state->mode = COPY_;
1533 if (flush == Z_TREES) goto inf_leave;
1534 case COPY_:
1535 state->mode = COPY;
1536 case COPY:
1537 copy = state->length;
1538 if (copy) {
1539 if (copy > have) copy = have;
1540 if (copy > left) copy = left;
1541 if (copy == 0) goto inf_leave;
1542 zmemcpy(put, next, copy);
1543 have -= copy;
1544 next += copy;
1545 left -= copy;
1546 put += copy;
1547 state->length -= copy;
1548 break;
1549 }
1550 Tracev((stderr, "inflate: stored end\n"));
1551 state->mode = TYPE;
1552 break;
1553 case TABLE:
1554 NEEDBITS(14);
1555 state->nlen = BITS(5) + 257;
1556 DROPBITS(5);
1557 state->ndist = BITS(5) + 1;
1558 DROPBITS(5);
1559 state->ncode = BITS(4) + 4;
1560 DROPBITS(4);
1561#ifndef PKZIP_BUG_WORKAROUND
1562 if (state->nlen > 286 || state->ndist > 30) {
1563 strm->msg = (char *)"too many length or distance symbols";
1564 state->mode = BAD;
1565 break;
1566 }
1567#endif
1568 Tracev((stderr, "inflate: table sizes ok\n"));
1569 state->have = 0;
1570 state->mode = LENLENS;
1571 case LENLENS:
1572 while (state->have < state->ncode) {
1573 NEEDBITS(3);
1574 state->lens[order[state->have++]] = (unsigned short)BITS(3);
1575 DROPBITS(3);
1576 }
1577 while (state->have < 19)
1578 state->lens[order[state->have++]] = 0;
1579 state->next = state->codes;
1580 state->lencode = (const code FAR *)(state->next);
1581 state->lenbits = 7;
1582 ret = inflate_table(CODES, state->lens, 19, &(state->next),
1583 &(state->lenbits), state->work);
1584 if (ret) {
1585 strm->msg = (char *)"invalid code lengths set";
1586 state->mode = BAD;
1587 break;
1588 }
1589 Tracev((stderr, "inflate: code lengths ok\n"));
1590 state->have = 0;
1591 state->mode = CODELENS;
1592 case CODELENS:
1593 while (state->have < state->nlen + state->ndist) {
1594 for (;;) {
1595 here = state->lencode[BITS(state->lenbits)];
1596 if ((unsigned)(here.bits) <= bits) break;
1597 PULLBYTE();
1598 }
1599 if (here.val < 16) {
1600 DROPBITS(here.bits);
1601 state->lens[state->have++] = here.val;
1602 }
1603 else {
1604 if (here.val == 16) {
1605 NEEDBITS(here.bits + 2);
1606 DROPBITS(here.bits);
1607 if (state->have == 0) {
1608 strm->msg = (char *)"invalid bit length repeat";
1609 state->mode = BAD;
1610 break;
1611 }
1612 len = state->lens[state->have - 1];
1613 copy = 3 + BITS(2);
1614 DROPBITS(2);
1615 }
1616 else if (here.val == 17) {
1617 NEEDBITS(here.bits + 3);
1618 DROPBITS(here.bits);
1619 len = 0;
1620 copy = 3 + BITS(3);
1621 DROPBITS(3);
1622 }
1623 else {
1624 NEEDBITS(here.bits + 7);
1625 DROPBITS(here.bits);
1626 len = 0;
1627 copy = 11 + BITS(7);
1628 DROPBITS(7);
1629 }
1630 if (state->have + copy > state->nlen + state->ndist) {
1631 strm->msg = (char *)"invalid bit length repeat";
1632 state->mode = BAD;
1633 break;
1634 }
1635 while (copy--)
1636 state->lens[state->have++] = (unsigned short)len;
1637 }
1638 }
1639
1640 /* handle error breaks in while */
1641 if (state->mode == BAD) break;
1642
1643 /* check for end-of-block code (better have one) */
1644 if (state->lens[256] == 0) {
1645 strm->msg = (char *)"invalid code -- missing end-of-block";
1646 state->mode = BAD;
1647 break;
1648 }
1649
1650 /* build code tables -- note: do not change the lenbits or distbits
1651 values here (9 and 6) without reading the comments in inftrees.h
1652 concerning the ENOUGH constants, which depend on those values */
1653 state->next = state->codes;
1654 state->lencode = (const code FAR *)(state->next);
1655 state->lenbits = 9;
1656 ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
1657 &(state->lenbits), state->work);
1658 if (ret) {
1659 strm->msg = (char *)"invalid literal/lengths set";
1660 state->mode = BAD;
1661 break;
1662 }
1663 state->distcode = (const code FAR *)(state->next);
1664 state->distbits = 6;
1665 ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
1666 &(state->next), &(state->distbits), state->work);
1667 if (ret) {
1668 strm->msg = (char *)"invalid distances set";
1669 state->mode = BAD;
1670 break;
1671 }
1672 Tracev((stderr, "inflate: codes ok\n"));
1673 state->mode = LEN_;
1674 if (flush == Z_TREES) goto inf_leave;
1675 case LEN_:
1676 state->mode = LEN;
1677 case LEN:
1678 if (have >= 6 && left >= 258) {
1679 RESTORE();
1680 inflate_fast(strm, out);
1681 LOAD();
1682 if (state->mode == TYPE)
1683 state->back = -1;
1684 break;
1685 }
1686 state->back = 0;
1687 for (;;) {
1688 here = state->lencode[BITS(state->lenbits)];
1689 if ((unsigned)(here.bits) <= bits) break;
1690 PULLBYTE();
1691 }
1692 if (here.op && (here.op & 0xf0) == 0) {
1693 last = here;
1694 for (;;) {
1695 here = state->lencode[last.val +
1696 (BITS(last.bits + last.op) >> last.bits)];
1697 if ((unsigned)(last.bits + here.bits) <= bits) break;
1698 PULLBYTE();
1699 }
1700 DROPBITS(last.bits);
1701 state->back += last.bits;
1702 }
1703 DROPBITS(here.bits);
1704 state->back += here.bits;
1705 state->length = (unsigned)here.val;
1706 if ((int)(here.op) == 0) {
1707 Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
1708 "inflate: literal '%c'\n" :
1709 "inflate: literal 0x%02x\n", here.val));
1710 state->mode = LIT;
1711 break;
1712 }
1713 if (here.op & 32) {
1714 Tracevv((stderr, "inflate: end of block\n"));
1715 state->back = -1;
1716 state->mode = TYPE;
1717 break;
1718 }
1719 if (here.op & 64) {
1720 strm->msg = (char *)"invalid literal/length code";
1721 state->mode = BAD;
1722 break;
1723 }
1724 state->extra = (unsigned)(here.op) & 15;
1725 state->mode = LENEXT;
1726 case LENEXT:
1727 if (state->extra) {
1728 NEEDBITS(state->extra);
1729 state->length += BITS(state->extra);
1730 DROPBITS(state->extra);
1731 state->back += state->extra;
1732 }
1733 Tracevv((stderr, "inflate: length %u\n", state->length));
1734 state->was = state->length;
1735 state->mode = DIST;
1736 case DIST:
1737 for (;;) {
1738 here = state->distcode[BITS(state->distbits)];
1739 if ((unsigned)(here.bits) <= bits) break;
1740 PULLBYTE();
1741 }
1742 if ((here.op & 0xf0) == 0) {
1743 last = here;
1744 for (;;) {
1745 here = state->distcode[last.val +
1746 (BITS(last.bits + last.op) >> last.bits)];
1747 if ((unsigned)(last.bits + here.bits) <= bits) break;
1748 PULLBYTE();
1749 }
1750 DROPBITS(last.bits);
1751 state->back += last.bits;
1752 }
1753 DROPBITS(here.bits);
1754 state->back += here.bits;
1755 if (here.op & 64) {
1756 strm->msg = (char *)"invalid distance code";
1757 state->mode = BAD;
1758 break;
1759 }
1760 state->offset = (unsigned)here.val;
1761 state->extra = (unsigned)(here.op) & 15;
1762 state->mode = DISTEXT;
1763 case DISTEXT:
1764 if (state->extra) {
1765 NEEDBITS(state->extra);
1766 state->offset += BITS(state->extra);
1767 DROPBITS(state->extra);
1768 state->back += state->extra;
1769 }
1770#ifdef INFLATE_STRICT
1771 if (state->offset > state->dmax) {
1772 strm->msg = (char *)"invalid distance too far back";
1773 state->mode = BAD;
1774 break;
1775 }
1776#endif
1777 Tracevv((stderr, "inflate: distance %u\n", state->offset));
1778 state->mode = MATCH;
1779 case MATCH:
1780 if (left == 0) goto inf_leave;
1781 copy = out - left;
1782 if (state->offset > copy) { /* copy from window */
1783 copy = state->offset - copy;
1784 if (copy > state->whave) {
1785 if (state->sane) {
1786 strm->msg = (char *)"invalid distance too far back";
1787 state->mode = BAD;
1788 break;
1789 }
1790#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
1791 Trace((stderr, "inflate.c too far\n"));
1792 copy -= state->whave;
1793 if (copy > state->length) copy = state->length;
1794 if (copy > left) copy = left;
1795 left -= copy;
1796 state->length -= copy;
1797 do {
1798 *put++ = 0;
1799 } while (--copy);
1800 if (state->length == 0) state->mode = LEN;
1801 break;
1802#endif
1803 }
1804 if (copy > state->wnext) {
1805 copy -= state->wnext;
1806 from = state->window + (state->wsize - copy);
1807 }
1808 else
1809 from = state->window + (state->wnext - copy);
1810 if (copy > state->length) copy = state->length;
1811 }
1812 else { /* copy from output */
1813 from = put - state->offset;
1814 copy = state->length;
1815 }
1816 if (copy > left) copy = left;
1817 left -= copy;
1818 state->length -= copy;
1819 do {
1820 *put++ = *from++;
1821 } while (--copy);
1822 if (state->length == 0) state->mode = LEN;
1823 break;
1824 case LIT:
1825 if (left == 0) goto inf_leave;
1826 *put++ = (unsigned char)(state->length);
1827 left--;
1828 state->mode = LEN;
1829 break;
1830 case CHECK:
1831 if (state->wrap) {
1832 NEEDBITS(32);
1833 out -= left;
1834 strm->total_out += out;
1835 state->total += out;
1836 if ((state->wrap & 4) && out)
1837 strm->adler = state->check =
1838 UPDATE(state->check, put - out, out);
1839 out = left;
1840 if ((state->wrap & 4) && (
1841#ifdef GUNZIP
1842 state->flags ? hold :
1843#endif
1844 ZSWAP32(hold)) != state->check) {
1845 strm->msg = (char *)"incorrect data check";
1846 state->mode = BAD;
1847 break;
1848 }
1849 INITBITS();
1850 Tracev((stderr, "inflate: check matches trailer\n"));
1851 }
1852#ifdef GUNZIP
1853 state->mode = LENGTH;
1854 case LENGTH:
1855 if (state->wrap && state->flags) {
1856 NEEDBITS(32);
1857 if (hold != (state->total & 0xffffffffUL)) {
1858 strm->msg = (char *)"incorrect length check";
1859 state->mode = BAD;
1860 break;
1861 }
1862 INITBITS();
1863 Tracev((stderr, "inflate: length matches trailer\n"));
1864 }
1865#endif
1866 state->mode = DONE;
1867 case DONE:
1868 ret = Z_STREAM_END;
1869 goto inf_leave;
1870 case BAD:
1871 ret = Z_DATA_ERROR;
1872 goto inf_leave;
1873 case MEM:
1874 return Z_MEM_ERROR;
1875 case SYNC:
1876 default:
1877 return Z_STREAM_ERROR;
1878 }
1879
1880 /*
1881 Return from inflate(), updating the total counts and the check value.
1882 If there was no progress during the inflate() call, return a buffer
1883 error. Call updatewindow() to create and/or update the window state.
1884 Note: a memory error from inflate() is non-recoverable.
1885 */
1886 inf_leave:
1887 RESTORE();
1888 if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
1889 (state->mode < CHECK || flush != Z_FINISH)))
1890 if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
1891 state->mode = MEM;
1892 return Z_MEM_ERROR;
1893 }
1894 in -= strm->avail_in;
1895 out -= strm->avail_out;
1896 strm->total_in += in;
1897 strm->total_out += out;
1898 state->total += out;
1899 if ((state->wrap & 4) && out)
1900 strm->adler = state->check =
1901 UPDATE(state->check, strm->next_out - out, out);
1902 strm->data_type = (int)state->bits + (state->last ? 64 : 0) +
1903 (state->mode == TYPE ? 128 : 0) +
1904 (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0);
1905 if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
1906 ret = Z_BUF_ERROR;
1907 return ret;
1908}
state
static int state
Definition: maze.c:121
LOAD
#define LOAD()
Definition: inflate.c:1111
CODES
@ CODES
Definition: inflate.c:151
LENS
@ LENS
Definition: inflate.c:152
DISTS
@ DISTS
Definition: inflate.c:153
HEAD
@ HEAD
Definition: inflate.c:158
MATCH
@ MATCH
Definition: inflate.c:182
DICT
@ DICT
Definition: inflate.c:168
TABLE
@ TABLE
Definition: inflate.c:174
LENGTH
@ LENGTH
Definition: inflate.c:185
FLAGS
@ FLAGS
Definition: inflate.c:159
LIT
@ LIT
Definition: inflate.c:183
SYNC
@ SYNC
Definition: inflate.c:189
OS
@ OS
Definition: inflate.c:161
EXLEN
@ EXLEN
Definition: inflate.c:162
MEM
@ MEM
Definition: inflate.c:188
NAME
@ NAME
Definition: inflate.c:164
STORED
@ STORED
Definition: inflate.c:171
CODELENS
@ CODELENS
Definition: inflate.c:176
DICTID
@ DICTID
Definition: inflate.c:167
DONE
@ DONE
Definition: inflate.c:186
TYPEDO
@ TYPEDO
Definition: inflate.c:170
COMMENT
@ COMMENT
Definition: inflate.c:165
LENLENS
@ LENLENS
Definition: inflate.c:175
TYPE
@ TYPE
Definition: inflate.c:169
COPY
@ COPY
Definition: inflate.c:173
LEN_
@ LEN_
Definition: inflate.c:177
COPY_
@ COPY_
Definition: inflate.c:172
DIST
@ DIST
Definition: inflate.c:180
LENEXT
@ LENEXT
Definition: inflate.c:179
HCRC
@ HCRC
Definition: inflate.c:166
TIME
@ TIME
Definition: inflate.c:160
CHECK
@ CHECK
Definition: inflate.c:184
DISTEXT
@ DISTEXT
Definition: inflate.c:181
BAD
@ BAD
Definition: inflate.c:187
LEN
@ LEN
Definition: inflate.c:178
EXTRA
@ EXTRA
Definition: inflate.c:163
CRC2
#define CRC2(check, word)
Definition: inflate.c:1093
inflate_table
static int inflate_table(codetype type, unsigned short FAR *lens, unsigned codes, code FAR *FAR *table, unsigned FAR *bits, unsigned short FAR *work)
Definition: inflate.c:533
INITBITS
#define INITBITS()
Definition: inflate.c:1133
CRC4
#define CRC4(check, word)
Definition: inflate.c:1100
BITS
#define BITS(n)
Definition: inflate.c:1158
inflate_fast
static void inflate_fast(z_streamp strm, unsigned start)
Definition: inflate.c:274
UPDATE
#define UPDATE(check, buf, len)
Definition: inflate.c:1085
DROPBITS
#define DROPBITS(n)
Definition: inflate.c:1162
inflateStateCheck
static int inflateStateCheck(z_streamp strm)
Definition: inflate.c:802
Tracev
#define Tracev(x)
Definition: inflate.c:43
fixedtables
static void fixedtables(struct inflate_state FAR *state)
Definition: inflate.c:924
Trace
#define Trace(x)
Definition: inflate.c:42
BYTEBITS
#define BYTEBITS()
Definition: inflate.c:1169
ZSWAP32
#define ZSWAP32(q)
Definition: inflate.c:55
NEEDBITS
#define NEEDBITS(n)
Definition: inflate.c:1151
PULLBYTE
#define PULLBYTE()
Definition: inflate.c:1141
Tracevv
#define Tracevv(x)
Definition: inflate.c:44
GUNZIP
#define GUNZIP
Definition: inflate.c:47
updatewindow
static int updatewindow(z_streamp strm, const Bytef *end, unsigned copy)
Definition: inflate.c:1032
RESTORE
#define RESTORE()
Definition: inflate.c:1122
Z_TREES
#define Z_TREES
Definition: zlib.h:111
Z_NEED_DICT
#define Z_NEED_DICT
Definition: zlib.h:116
z_const
#define z_const
Definition: zlib.h:35
Z_MEM_ERROR
#define Z_MEM_ERROR
Definition: zlib.h:120
Bytef
Byte FAR Bytef
Definition: zlib.h:41
FAR
#define FAR
Definition: zlib.h:34
int
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31
char
unsigned char
Definition: typeof.h:29
short
unsigned short(__cdecl typeof(TIFFCurrentDirectory))(struct tiff *)
Definition: typeof.h:94
TYPE
TYPE
Definition: eventcreate.c:652
in
GLuint in
Definition: glext.h:9616
bits
GLenum GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * bits
Definition: glext.h:10929
order
GLuint GLdouble GLdouble GLint GLint order
Definition: glext.h:11194
len
GLenum GLsizei len
Definition: glext.h:6722
stderr
#define stderr
Definition: stdio.h:100
bits
#define bits
Definition: infblock.c:15
if
if(dx< 0)
Definition: linetemp.h:194
put
#define put(ret, state, sp, n)
Definition: match.c:105
last
static UINT UINT last
Definition: font.c:45
unsigned
static unsigned(__cdecl *hash_bstr)(bstr_t s)
next
static unsigned __int64 next
Definition: rand_nt.c:6
out
static FILE * out
Definition: regtests2xml.c:44
from
CardRegion * from
Definition: spigame.cpp:19
code
Definition: inflate.c:139
code::op
unsigned char op
Definition: inflate.c:140
code::bits
unsigned char bits
Definition: inflate.c:141
code::val
unsigned short val
Definition: inflate.c:142
inflate_state
Definition: inflate.c:194
inflate_state::have
unsigned have
Definition: inflate.c:229
inflate_state::hold
unsigned long hold
Definition: inflate.c:213
inflate_state::strm
z_streamp strm
Definition: inflate.c:195
ret
int ret
Definition: wcstombs-tests.c:31

Referenced by dwarf2_init_zsection(), ExtractZipImage(), gz_decomp(), gzip_read(), MSZipCodecUncompress(), test_boundsrect(), CMSZipCodec::Uncompress(), uncompress2(), unzReadCurrentFile(), and zlib_decompress().

◆ inflateEnd()

int inflateEnd ( z_streamp  strm)

Definition at line 1910 of file inflate.c.

1911{
1912 struct inflate_state FAR *state;
1913 if (inflateStateCheck(strm))
1914 return Z_STREAM_ERROR;
1915 state = (struct inflate_state FAR *)strm->state;
1916 if (state->window != Z_NULL) ZFREE(strm, state->window);
1917 ZFREE(strm, strm->state);
1918 strm->state = Z_NULL;
1919 Tracev((stderr, "inflate: end\n"));
1920 return Z_OK;
1921}

Referenced by dwarf2_init_zsection(), ExtractZipImage(), gzclose_r(), gzip_destroy(), gzip_read(), MSZipCodecUncompress(), CMSZipCodec::Uncompress(), uncompress2(), unzCloseCurrentFile(), and zlib_decompress().

◆ inflateInit()

int inflateInit ( z_streamp  strm)

Definition at line 909 of file inflate.c.

910{
911 return inflateInit2(strm, DEF_WBITS);
912}
DEF_WBITS
#define DEF_WBITS
Definition: inflate.c:37
inflateInit2
#define inflateInit2(strm, windowBits)
Definition: zlib.h:1817

◆ inflateInit2()

int inflateInit2 ( z_streamp  strm,
int  windowBits 
)

Definition at line 887 of file inflate.c.

888{
889 int ret;
890 struct inflate_state FAR *state;
891
892 strm->msg = Z_NULL; /* in case we return an error */
893 state = (struct inflate_state FAR *)
894 ZALLOC(strm, 1, sizeof(struct inflate_state));
895 if (state == Z_NULL) return Z_MEM_ERROR;
896 Tracev((stderr, "inflate: allocated\n"));
897 strm->state = (struct internal_state FAR *)state;
898 state->strm = strm;
899 state->window = Z_NULL;
900 state->mode = HEAD; /* to pass state test in inflateReset2() */
901 ret = inflateReset2(strm, windowBits);
902 if (ret != Z_OK) {
903 ZFREE(strm, state);
904 strm->state = Z_NULL;
905 }
906 return ret;
907}
inflateReset2
static int inflateReset2(z_streamp strm, int windowBits)
Definition: inflate.c:851
ZALLOC
#define ZALLOC(strm, items, size)
Definition: inflate.c:49
windowBits
int windowBits
Definition: zlib.h:813
internal_state::strm
z_streamp strm
Definition: deflate.h:101