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- move macros and constants into cabinet.h where they can be shared

Browse source 
between cabextract.c and fdi.c
- reminders to eliminate global variables (for multithread
  compatibility)
- remove struct fdi_cab: due to the nature of the FDI API, we cannot
  preload all the cabinets; this appears to obviate the need for struct
  fdi_cab
- "oppress" (that is, do not process) partial files which were
  continuations from another cabinet
- more than one partial file can exist in a single cabinet (how!?) --
  so move the partial file notification (and "oppression" that goes with
  it) into the loop that iterates through files
This commit is contained in:
Gregory M. Turner 2003-06-17 03:56:51 +00:00 committed by Alexandre Julliard
parent 677b37cbd8
commit 0c63c39c8d
3 changed files with 1762 additions and 321 deletions
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216
dlls/cabinet/cabextract.c
View file

@ -40,6 +40,8 @@
WINE_DEFAULT_DEBUG_CHANNEL(cabinet);
THOSE_ZIP_CONSTS;
/* all the file IO is abstracted into these routines:
* cabinet_(open|close|read|seek|skip|getoffset)
* file_(open|close|write)
@ -544,33 +546,6 @@ struct cabinet *load_cab_offset(LPCSTR name, cab_off_t offset)
/* Dirk Stoecker wrote the ZIP decoder, based on the InfoZip deflate code */
/* Tables for deflate from PKZIP's appnote.txt. */
static const cab_UBYTE Zipborder[] = /* Order of the bit length code lengths */
{ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
static const cab_UWORD Zipcplens[] = /* Copy lengths for literal codes 257..285 */
{ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51,
59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
static const cab_UWORD Zipcplext[] = /* Extra bits for literal codes 257..285 */
{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4,
4, 5, 5, 5, 5, 0, 99, 99}; /* 99==invalid */
static const cab_UWORD Zipcpdist[] = /* Copy offsets for distance codes 0..29 */
{ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385,
513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
static const cab_UWORD Zipcpdext[] = /* Extra bits for distance codes */
{ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10,
10, 11, 11, 12, 12, 13, 13};
/* And'ing with Zipmask[n] masks the lower n bits */
static const cab_UWORD Zipmask[17] = {
0x0000, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
};
#define ZIPNEEDBITS(n) {while(k<(n)){cab_LONG c=*(ZIP(inpos)++);\
b|=((cab_ULONG)c)<<k;k+=8;}}
#define ZIPDUMPBITS(n) {b>>=(n);k-=(n);}
/********************************************************
* Ziphuft_free (internal)
*/
@ -1148,6 +1123,7 @@ int ZIPdecompress(int inlen, int outlen, cab_decomp_state *decomp_state)
/* This decruncher was researched and implemented by Matthew Russoto. */
/* It has since been tidied up by Stuart Caie */
/* FIXME: eliminate global variables */
static cab_UBYTE q_length_base[27], q_length_extra[27], q_extra_bits[42];
static cab_ULONG q_position_base[42];
@ -1276,91 +1252,6 @@ void QTMupdatemodel(struct QTMmodel *model, int sym) {
}
}
/* Bitstream reading macros (Quantum / normal byte order)
*
* Q_INIT_BITSTREAM should be used first to set up the system
* Q_READ_BITS(var,n) takes N bits from the buffer and puts them in var.
* unlike LZX, this can loop several times to get the
* requisite number of bits.
* Q_FILL_BUFFER adds more data to the bit buffer, if there is room
* for another 16 bits.
* Q_PEEK_BITS(n) extracts (without removing) N bits from the bit
* buffer
* Q_REMOVE_BITS(n) removes N bits from the bit buffer
*
* These bit access routines work by using the area beyond the MSB and the
* LSB as a free source of zeroes. This avoids having to mask any bits.
* So we have to know the bit width of the bitbuffer variable. This is
* defined as ULONG_BITS.
*
* ULONG_BITS should be at least 16 bits. Unlike LZX's Huffman decoding,
* Quantum's arithmetic decoding only needs 1 bit at a time, it doesn't
* need an assured number. Retrieving larger bitstrings can be done with
* multiple reads and fills of the bitbuffer. The code should work fine
* for machines where ULONG >= 32 bits.
*
* Also note that Quantum reads bytes in normal order; LZX is in
* little-endian order.
*/
#define Q_INIT_BITSTREAM do { bitsleft = 0; bitbuf = 0; } while (0)
#define Q_FILL_BUFFER do { \
if (bitsleft <= (CAB_ULONG_BITS - 16)) { \
bitbuf |= ((inpos[0]<<8)|inpos[1]) << (CAB_ULONG_BITS-16 - bitsleft); \
bitsleft += 16; inpos += 2; \
} \
} while (0)
#define Q_PEEK_BITS(n) (bitbuf >> (CAB_ULONG_BITS - (n)))
#define Q_REMOVE_BITS(n) ((bitbuf <<= (n)), (bitsleft -= (n)))
#define Q_READ_BITS(v,n) do { \
(v) = 0; \
for (bitsneed = (n); bitsneed; bitsneed -= bitrun) { \
Q_FILL_BUFFER; \
bitrun = (bitsneed > bitsleft) ? bitsleft : bitsneed; \
(v) = ((v) << bitrun) | Q_PEEK_BITS(bitrun); \
Q_REMOVE_BITS(bitrun); \
} \
} while (0)
#define Q_MENTRIES(model) (QTM(model).entries)
#define Q_MSYM(model,symidx) (QTM(model).syms[(symidx)].sym)
#define Q_MSYMFREQ(model,symidx) (QTM(model).syms[(symidx)].cumfreq)
/* GET_SYMBOL(model, var) fetches the next symbol from the stated model
* and puts it in var. it may need to read the bitstream to do this.
*/
#define GET_SYMBOL(m, var) do { \
range = ((H - L) & 0xFFFF) + 1; \
symf = ((((C - L + 1) * Q_MSYMFREQ(m,0)) - 1) / range) & 0xFFFF; \
\
for (i=1; i < Q_MENTRIES(m); i++) { \
if (Q_MSYMFREQ(m,i) <= symf) break; \
} \
(var) = Q_MSYM(m,i-1); \
\
range = (H - L) + 1; \
H = L + ((Q_MSYMFREQ(m,i-1) * range) / Q_MSYMFREQ(m,0)) - 1; \
L = L + ((Q_MSYMFREQ(m,i) * range) / Q_MSYMFREQ(m,0)); \
while (1) { \
if ((L & 0x8000) != (H & 0x8000)) { \
if ((L & 0x4000) && !(H & 0x4000)) { \
/* underflow case */ \
C ^= 0x4000; L &= 0x3FFF; H |= 0x4000; \
} \
else break; \
} \
L <<= 1; H = (H << 1) | 1; \
Q_FILL_BUFFER; \
C = (C << 1) | Q_PEEK_BITS(1); \
Q_REMOVE_BITS(1); \
} \
\
QTMupdatemodel(&(QTM(m)), i); \
} while (0)
/*******************************************************************
* QTMdecompress (internal)
*/
@ -1542,6 +1433,8 @@ int QTMdecompress(int inlen, int outlen, cab_decomp_state *decomp_state)
* - lzx_position_base is an index to the position slot bases
* - lzx_extra_bits states how many bits of offset-from-base data is needed.
*/
/* FIXME: Eliminate global variables */
static cab_ULONG lzx_position_base[51];
static cab_UBYTE extra_bits[51];
@ -1599,93 +1492,6 @@ int LZXinit(int window, cab_decomp_state *decomp_state) {
return DECR_OK;
}
/* Bitstream reading macros (LZX / intel little-endian byte order)
*
* INIT_BITSTREAM should be used first to set up the system
* READ_BITS(var,n) takes N bits from the buffer and puts them in var
*
* ENSURE_BITS(n) ensures there are at least N bits in the bit buffer.
* it can guarantee up to 17 bits (i.e. it can read in
* 16 new bits when there is down to 1 bit in the buffer,
* and it can read 32 bits when there are 0 bits in the
* buffer).
* PEEK_BITS(n) extracts (without removing) N bits from the bit buffer
* REMOVE_BITS(n) removes N bits from the bit buffer
*
* These bit access routines work by using the area beyond the MSB and the
* LSB as a free source of zeroes. This avoids having to mask any bits.
* So we have to know the bit width of the bitbuffer variable.
*/
#define INIT_BITSTREAM do { bitsleft = 0; bitbuf = 0; } while (0)
/* Quantum reads bytes in normal order; LZX is little-endian order */
#define ENSURE_BITS(n) \
while (bitsleft < (n)) { \
bitbuf |= ((inpos[1]<<8)|inpos[0]) << (CAB_ULONG_BITS-16 - bitsleft); \
bitsleft += 16; inpos+=2; \
}
#define PEEK_BITS(n) (bitbuf >> (CAB_ULONG_BITS - (n)))
#define REMOVE_BITS(n) ((bitbuf <<= (n)), (bitsleft -= (n)))
#define READ_BITS(v,n) do { \
if (n) { \
ENSURE_BITS(n); \
(v) = PEEK_BITS(n); \
REMOVE_BITS(n); \
} \
else { \
(v) = 0; \
} \
} while (0)
/* Huffman macros */
#define TABLEBITS(tbl) (LZX_##tbl##_TABLEBITS)
#define MAXSYMBOLS(tbl) (LZX_##tbl##_MAXSYMBOLS)
#define SYMTABLE(tbl) (LZX(tbl##_table))
#define LENTABLE(tbl) (LZX(tbl##_len))
/* BUILD_TABLE(tablename) builds a huffman lookup table from code lengths.
* In reality, it just calls make_decode_table() with the appropriate
* values - they're all fixed by some #defines anyway, so there's no point
* writing each call out in full by hand.
*/
#define BUILD_TABLE(tbl) \
if (make_decode_table( \
MAXSYMBOLS(tbl), TABLEBITS(tbl), LENTABLE(tbl), SYMTABLE(tbl) \
)) { return DECR_ILLEGALDATA; }
/* READ_HUFFSYM(tablename, var) decodes one huffman symbol from the
* bitstream using the stated table and puts it in var.
*/
#define READ_HUFFSYM(tbl,var) do { \
ENSURE_BITS(16); \
hufftbl = SYMTABLE(tbl); \
if ((i = hufftbl[PEEK_BITS(TABLEBITS(tbl))]) >= MAXSYMBOLS(tbl)) { \
j = 1 << (CAB_ULONG_BITS - TABLEBITS(tbl)); \
do { \
j >>= 1; i <<= 1; i |= (bitbuf & j) ? 1 : 0; \
if (!j) { return DECR_ILLEGALDATA; } \
} while ((i = hufftbl[i]) >= MAXSYMBOLS(tbl)); \
} \
j = LENTABLE(tbl)[(var) = i]; \
REMOVE_BITS(j); \
} while (0)
/* READ_LENGTHS(tablename, first, last) reads in code lengths for symbols
* first to last in the given table. The code lengths are stored in their
* own special LZX way.
*/
#define READ_LENGTHS(tbl,first,last) do { \
lb.bb = bitbuf; lb.bl = bitsleft; lb.ip = inpos; \
if (lzx_read_lens(LENTABLE(tbl),(first),(last),&lb,decomp_state)) { \
return DECR_ILLEGALDATA; \
} \
bitbuf = lb.bb; bitsleft = lb.bl; inpos = lb.ip; \
} while (0)
/*************************************************************************
* make_decode_table (internal)
*
@ -1773,12 +1579,6 @@ int make_decode_table(cab_ULONG nsyms, cab_ULONG nbits, cab_UBYTE *length, cab_U
return 0;
}
struct lzx_bits {
cab_ULONG bb;
int bl;
cab_UBYTE *ip;
};
/************************************************************
* lzx_read_lens (internal)
*/
@ -1883,12 +1683,12 @@ int LZXdecompress(int inlen, int outlen, cab_decomp_state *decomp_state) {
/* rest of aligned header is same as verbatim */
case LZX_BLOCKTYPE_VERBATIM:
READ_LENGTHS(MAINTREE, 0, 256);
READ_LENGTHS(MAINTREE, 256, LZX(main_elements));
READ_LENGTHS(MAINTREE, 0, 256, lzx_read_lens);
READ_LENGTHS(MAINTREE, 256, LZX(main_elements), lzx_read_lens);
BUILD_TABLE(MAINTREE);
if (LENTABLE(MAINTREE)[0xE8] != 0) LZX(intel_started) = 1;
READ_LENGTHS(LENGTH, 0, LZX_NUM_SECONDARY_LENGTHS);
READ_LENGTHS(LENGTH, 0, LZX_NUM_SECONDARY_LENGTHS, lzx_read_lens);
BUILD_TABLE(LENGTH);
break;

244
dlls/cabinet/cabinet.h
View file

@ -41,10 +41,6 @@ typedef UINT32 cab_off_t;
#endif
#define CAB_ULONG_BITS (sizeof(cab_ULONG) * CHAR_BIT)
/* endian-neutral reading of little-endian data */
#define EndGetI32(a) ((((a)[3])<<24)|(((a)[2])<<16)|(((a)[1])<<8)|((a)[0]))
#define EndGetI16(a) ((((a)[1])<<8)|((a)[0]))
/* structure offsets */
#define cfhead_Signature (0x00)
#define cfhead_CabinetSize (0x08)
@ -212,18 +208,11 @@ struct LZXstate {
LZX_DECLARE_TABLE(ALIGNED);
};
/* generic stuff */
#define CAB(x) (decomp_state->x)
#define ZIP(x) (decomp_state->methods.zip.x)
#define QTM(x) (decomp_state->methods.qtm.x)
#define LZX(x) (decomp_state->methods.lzx.x)
#define DECR_OK (0)
#define DECR_DATAFORMAT (1)
#define DECR_ILLEGALDATA (2)
#define DECR_NOMEMORY (3)
#define DECR_CHECKSUM (4)
#define DECR_INPUT (5)
#define DECR_OUTPUT (6)
struct lzx_bits {
cab_ULONG bb;
int bl;
cab_UBYTE *ip;
};
/* CAB data blocks are <= 32768 bytes in uncompressed form. Uncompressed
* blocks have zero growth. MSZIP guarantees that it won't grow above
@ -331,7 +320,230 @@ typedef struct {
(((void *) hfdi) != NULL) && \
(PFDI_INT(hfdi)->FDI_Intmagic == FDI_INT_MAGIC) )
/*
* the rest of these are somewhat kludgy macros which are shared between fdi.c
* and cabextract.c.
*/
#define ZIPNEEDBITS(n) {while(k<(n)){cab_LONG c=*(ZIP(inpos)++);\
b|=((cab_ULONG)c)<<k;k+=8;}}
#define ZIPDUMPBITS(n) {b>>=(n);k-=(n);}
/* endian-neutral reading of little-endian data */
#define EndGetI32(a) ((((a)[3])<<24)|(((a)[2])<<16)|(((a)[1])<<8)|((a)[0]))
#define EndGetI16(a) ((((a)[1])<<8)|((a)[0]))
#define CAB(x) (decomp_state->x)
#define ZIP(x) (decomp_state->methods.zip.x)
#define QTM(x) (decomp_state->methods.qtm.x)
#define LZX(x) (decomp_state->methods.lzx.x)
#define DECR_OK (0)
#define DECR_DATAFORMAT (1)
#define DECR_ILLEGALDATA (2)
#define DECR_NOMEMORY (3)
#define DECR_CHECKSUM (4)
#define DECR_INPUT (5)
#define DECR_OUTPUT (6)
/* Bitstream reading macros (Quantum / normal byte order)
*
* Q_INIT_BITSTREAM should be used first to set up the system
* Q_READ_BITS(var,n) takes N bits from the buffer and puts them in var.
* unlike LZX, this can loop several times to get the
* requisite number of bits.
* Q_FILL_BUFFER adds more data to the bit buffer, if there is room
* for another 16 bits.
* Q_PEEK_BITS(n) extracts (without removing) N bits from the bit
* buffer
* Q_REMOVE_BITS(n) removes N bits from the bit buffer
*
* These bit access routines work by using the area beyond the MSB and the
* LSB as a free source of zeroes. This avoids having to mask any bits.
* So we have to know the bit width of the bitbuffer variable. This is
* defined as ULONG_BITS.
*
* ULONG_BITS should be at least 16 bits. Unlike LZX's Huffman decoding,
* Quantum's arithmetic decoding only needs 1 bit at a time, it doesn't
* need an assured number. Retrieving larger bitstrings can be done with
* multiple reads and fills of the bitbuffer. The code should work fine
* for machines where ULONG >= 32 bits.
*
* Also note that Quantum reads bytes in normal order; LZX is in
* little-endian order.
*/
#define Q_INIT_BITSTREAM do { bitsleft = 0; bitbuf = 0; } while (0)
#define Q_FILL_BUFFER do { \
if (bitsleft <= (CAB_ULONG_BITS - 16)) { \
bitbuf |= ((inpos[0]<<8)|inpos[1]) << (CAB_ULONG_BITS-16 - bitsleft); \
bitsleft += 16; inpos += 2; \
} \
} while (0)
#define Q_PEEK_BITS(n) (bitbuf >> (CAB_ULONG_BITS - (n)))
#define Q_REMOVE_BITS(n) ((bitbuf <<= (n)), (bitsleft -= (n)))
#define Q_READ_BITS(v,n) do { \
(v) = 0; \
for (bitsneed = (n); bitsneed; bitsneed -= bitrun) { \
Q_FILL_BUFFER; \
bitrun = (bitsneed > bitsleft) ? bitsleft : bitsneed; \
(v) = ((v) << bitrun) | Q_PEEK_BITS(bitrun); \
Q_REMOVE_BITS(bitrun); \
} \
} while (0)
#define Q_MENTRIES(model) (QTM(model).entries)
#define Q_MSYM(model,symidx) (QTM(model).syms[(symidx)].sym)
#define Q_MSYMFREQ(model,symidx) (QTM(model).syms[(symidx)].cumfreq)
/* GET_SYMBOL(model, var) fetches the next symbol from the stated model
* and puts it in var. it may need to read the bitstream to do this.
*/
#define GET_SYMBOL(m, var) do { \
range = ((H - L) & 0xFFFF) + 1; \
symf = ((((C - L + 1) * Q_MSYMFREQ(m,0)) - 1) / range) & 0xFFFF; \
\
for (i=1; i < Q_MENTRIES(m); i++) { \
if (Q_MSYMFREQ(m,i) <= symf) break; \
} \
(var) = Q_MSYM(m,i-1); \
\
range = (H - L) + 1; \
H = L + ((Q_MSYMFREQ(m,i-1) * range) / Q_MSYMFREQ(m,0)) - 1; \
L = L + ((Q_MSYMFREQ(m,i) * range) / Q_MSYMFREQ(m,0)); \
while (1) { \
if ((L & 0x8000) != (H & 0x8000)) { \
if ((L & 0x4000) && !(H & 0x4000)) { \
/* underflow case */ \
C ^= 0x4000; L &= 0x3FFF; H |= 0x4000; \
} \
else break; \
} \
L <<= 1; H = (H << 1) | 1; \
Q_FILL_BUFFER; \
C = (C << 1) | Q_PEEK_BITS(1); \
Q_REMOVE_BITS(1); \
} \
\
QTMupdatemodel(&(QTM(m)), i); \
} while (0)
/* Bitstream reading macros (LZX / intel little-endian byte order)
*
* INIT_BITSTREAM should be used first to set up the system
* READ_BITS(var,n) takes N bits from the buffer and puts them in var
*
* ENSURE_BITS(n) ensures there are at least N bits in the bit buffer.
* it can guarantee up to 17 bits (i.e. it can read in
* 16 new bits when there is down to 1 bit in the buffer,
* and it can read 32 bits when there are 0 bits in the
* buffer).
* PEEK_BITS(n) extracts (without removing) N bits from the bit buffer
* REMOVE_BITS(n) removes N bits from the bit buffer
*
* These bit access routines work by using the area beyond the MSB and the
* LSB as a free source of zeroes. This avoids having to mask any bits.
* So we have to know the bit width of the bitbuffer variable.
*/
#define INIT_BITSTREAM do { bitsleft = 0; bitbuf = 0; } while (0)
/* Quantum reads bytes in normal order; LZX is little-endian order */
#define ENSURE_BITS(n) \
while (bitsleft < (n)) { \
bitbuf |= ((inpos[1]<<8)|inpos[0]) << (CAB_ULONG_BITS-16 - bitsleft); \
bitsleft += 16; inpos+=2; \
}
#define PEEK_BITS(n) (bitbuf >> (CAB_ULONG_BITS - (n)))
#define REMOVE_BITS(n) ((bitbuf <<= (n)), (bitsleft -= (n)))
#define READ_BITS(v,n) do { \
if (n) { \
ENSURE_BITS(n); \
(v) = PEEK_BITS(n); \
REMOVE_BITS(n); \
} \
else { \
(v) = 0; \
} \
} while (0)
/* Huffman macros */
#define TABLEBITS(tbl) (LZX_##tbl##_TABLEBITS)
#define MAXSYMBOLS(tbl) (LZX_##tbl##_MAXSYMBOLS)
#define SYMTABLE(tbl) (LZX(tbl##_table))
#define LENTABLE(tbl) (LZX(tbl##_len))
/* BUILD_TABLE(tablename) builds a huffman lookup table from code lengths.
* In reality, it just calls make_decode_table() with the appropriate
* values - they're all fixed by some #defines anyway, so there's no point
* writing each call out in full by hand.
*/
#define BUILD_TABLE(tbl) \
if (make_decode_table( \
MAXSYMBOLS(tbl), TABLEBITS(tbl), LENTABLE(tbl), SYMTABLE(tbl) \
)) { return DECR_ILLEGALDATA; }
/* READ_HUFFSYM(tablename, var) decodes one huffman symbol from the
* bitstream using the stated table and puts it in var.
*/
#define READ_HUFFSYM(tbl,var) do { \
ENSURE_BITS(16); \
hufftbl = SYMTABLE(tbl); \
if ((i = hufftbl[PEEK_BITS(TABLEBITS(tbl))]) >= MAXSYMBOLS(tbl)) { \
j = 1 << (CAB_ULONG_BITS - TABLEBITS(tbl)); \
do { \
j >>= 1; i <<= 1; i |= (bitbuf & j) ? 1 : 0; \
if (!j) { return DECR_ILLEGALDATA; } \
} while ((i = hufftbl[i]) >= MAXSYMBOLS(tbl)); \
} \
j = LENTABLE(tbl)[(var) = i]; \
REMOVE_BITS(j); \
} while (0)
/* READ_LENGTHS(tablename, first, last) reads in code lengths for symbols
* first to last in the given table. The code lengths are stored in their
* own special LZX way.
*/
#define READ_LENGTHS(tbl,first,last,fn) do { \
lb.bb = bitbuf; lb.bl = bitsleft; lb.ip = inpos; \
if (fn(LENTABLE(tbl),(first),(last),&lb,decomp_state)) { \
return DECR_ILLEGALDATA; \
} \
bitbuf = lb.bb; bitsleft = lb.bl; inpos = lb.ip; \
} while (0)
/* Tables for deflate from PKZIP's appnote.txt. */
#define THOSE_ZIP_CONSTS \
static const cab_UBYTE Zipborder[] = /* Order of the bit length code lengths */ \
{ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; \
static const cab_UWORD Zipcplens[] = /* Copy lengths for literal codes 257..285 */ \
{ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, \
59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; \
static const cab_UWORD Zipcplext[] = /* Extra bits for literal codes 257..285 */ \
{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, \
4, 5, 5, 5, 5, 0, 99, 99}; /* 99==invalid */ \
static const cab_UWORD Zipcpdist[] = /* Copy offsets for distance codes 0..29 */ \
{ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, \
513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; \
static const cab_UWORD Zipcpdext[] = /* Extra bits for distance codes */ \
{ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, \
10, 11, 11, 12, 12, 13, 13}; \
/* And'ing with Zipmask[n] masks the lower n bits */ \
static const cab_UWORD Zipmask[17] = { \
0x0000, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff, \
0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff \
}
/* from cabextract.c */
BOOL process_cabinet(LPCSTR cabname, LPCSTR dir, BOOL fix, BOOL lower);
void QTMupdatemodel(struct QTMmodel *model, int sym);
int make_decode_table(cab_ULONG nsyms, cab_ULONG nbits, cab_UBYTE *length, cab_UWORD *table);
cab_ULONG checksum(cab_UBYTE *data, cab_UWORD bytes, cab_ULONG csum);
#endif /* __WINE_CABINET_H */

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dlls/cabinet/fdi.c
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