Link zlib statically for windows (#35)
* Add zlib 1.2.11 sources * link zlib statically for windows
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								third_party/zlib/contrib/infback9/infback9.c
									
									
									
									
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								third_party/zlib/contrib/infback9/infback9.c
									
									
									
									
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							| @@ -0,0 +1,615 @@ | ||||
| /* infback9.c -- inflate deflate64 data using a call-back interface | ||||
|  * Copyright (C) 1995-2008 Mark Adler | ||||
|  * For conditions of distribution and use, see copyright notice in zlib.h | ||||
|  */ | ||||
|  | ||||
| #include "zutil.h" | ||||
| #include "infback9.h" | ||||
| #include "inftree9.h" | ||||
| #include "inflate9.h" | ||||
|  | ||||
| #define WSIZE 65536UL | ||||
|  | ||||
| /* | ||||
|    strm provides memory allocation functions in zalloc and zfree, or | ||||
|    Z_NULL to use the library memory allocation functions. | ||||
|  | ||||
|    window is a user-supplied window and output buffer that is 64K bytes. | ||||
|  */ | ||||
| int ZEXPORT inflateBack9Init_(strm, window, version, stream_size) | ||||
| z_stream FAR *strm; | ||||
| unsigned char FAR *window; | ||||
| const char *version; | ||||
| int stream_size; | ||||
| { | ||||
|     struct inflate_state FAR *state; | ||||
|  | ||||
|     if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || | ||||
|         stream_size != (int)(sizeof(z_stream))) | ||||
|         return Z_VERSION_ERROR; | ||||
|     if (strm == Z_NULL || window == Z_NULL) | ||||
|         return Z_STREAM_ERROR; | ||||
|     strm->msg = Z_NULL;                 /* in case we return an error */ | ||||
|     if (strm->zalloc == (alloc_func)0) { | ||||
|         strm->zalloc = zcalloc; | ||||
|         strm->opaque = (voidpf)0; | ||||
|     } | ||||
|     if (strm->zfree == (free_func)0) strm->zfree = zcfree; | ||||
|     state = (struct inflate_state FAR *)ZALLOC(strm, 1, | ||||
|                                                sizeof(struct inflate_state)); | ||||
|     if (state == Z_NULL) return Z_MEM_ERROR; | ||||
|     Tracev((stderr, "inflate: allocated\n")); | ||||
|     strm->state = (voidpf)state; | ||||
|     state->window = window; | ||||
|     return Z_OK; | ||||
| } | ||||
|  | ||||
| /* | ||||
|    Build and output length and distance decoding tables for fixed code | ||||
|    decoding. | ||||
|  */ | ||||
| #ifdef MAKEFIXED | ||||
| #include <stdio.h> | ||||
|  | ||||
| void makefixed9(void) | ||||
| { | ||||
|     unsigned sym, bits, low, size; | ||||
|     code *next, *lenfix, *distfix; | ||||
|     struct inflate_state state; | ||||
|     code fixed[544]; | ||||
|  | ||||
|     /* literal/length table */ | ||||
|     sym = 0; | ||||
|     while (sym < 144) state.lens[sym++] = 8; | ||||
|     while (sym < 256) state.lens[sym++] = 9; | ||||
|     while (sym < 280) state.lens[sym++] = 7; | ||||
|     while (sym < 288) state.lens[sym++] = 8; | ||||
|     next = fixed; | ||||
|     lenfix = next; | ||||
|     bits = 9; | ||||
|     inflate_table9(LENS, state.lens, 288, &(next), &(bits), state.work); | ||||
|  | ||||
|     /* distance table */ | ||||
|     sym = 0; | ||||
|     while (sym < 32) state.lens[sym++] = 5; | ||||
|     distfix = next; | ||||
|     bits = 5; | ||||
|     inflate_table9(DISTS, state.lens, 32, &(next), &(bits), state.work); | ||||
|  | ||||
|     /* write tables */ | ||||
|     puts("    /* inffix9.h -- table for decoding deflate64 fixed codes"); | ||||
|     puts("     * Generated automatically by makefixed9()."); | ||||
|     puts("     */"); | ||||
|     puts(""); | ||||
|     puts("    /* WARNING: this file should *not* be used by applications."); | ||||
|     puts("       It is part of the implementation of this library and is"); | ||||
|     puts("       subject to change. Applications should only use zlib.h."); | ||||
|     puts("     */"); | ||||
|     puts(""); | ||||
|     size = 1U << 9; | ||||
|     printf("    static const code lenfix[%u] = {", size); | ||||
|     low = 0; | ||||
|     for (;;) { | ||||
|         if ((low % 6) == 0) printf("\n        "); | ||||
|         printf("{%u,%u,%d}", lenfix[low].op, lenfix[low].bits, | ||||
|                lenfix[low].val); | ||||
|         if (++low == size) break; | ||||
|         putchar(','); | ||||
|     } | ||||
|     puts("\n    };"); | ||||
|     size = 1U << 5; | ||||
|     printf("\n    static const code distfix[%u] = {", size); | ||||
|     low = 0; | ||||
|     for (;;) { | ||||
|         if ((low % 5) == 0) printf("\n        "); | ||||
|         printf("{%u,%u,%d}", distfix[low].op, distfix[low].bits, | ||||
|                distfix[low].val); | ||||
|         if (++low == size) break; | ||||
|         putchar(','); | ||||
|     } | ||||
|     puts("\n    };"); | ||||
| } | ||||
| #endif /* MAKEFIXED */ | ||||
|  | ||||
| /* Macros for inflateBack(): */ | ||||
|  | ||||
| /* Clear the input bit accumulator */ | ||||
| #define INITBITS() \ | ||||
|     do { \ | ||||
|         hold = 0; \ | ||||
|         bits = 0; \ | ||||
|     } while (0) | ||||
|  | ||||
| /* Assure that some input is available.  If input is requested, but denied, | ||||
|    then return a Z_BUF_ERROR from inflateBack(). */ | ||||
| #define PULL() \ | ||||
|     do { \ | ||||
|         if (have == 0) { \ | ||||
|             have = in(in_desc, &next); \ | ||||
|             if (have == 0) { \ | ||||
|                 next = Z_NULL; \ | ||||
|                 ret = Z_BUF_ERROR; \ | ||||
|                 goto inf_leave; \ | ||||
|             } \ | ||||
|         } \ | ||||
|     } while (0) | ||||
|  | ||||
| /* Get a byte of input into the bit accumulator, or return from inflateBack() | ||||
|    with an error if there is no input available. */ | ||||
| #define PULLBYTE() \ | ||||
|     do { \ | ||||
|         PULL(); \ | ||||
|         have--; \ | ||||
|         hold += (unsigned long)(*next++) << bits; \ | ||||
|         bits += 8; \ | ||||
|     } while (0) | ||||
|  | ||||
| /* Assure that there are at least n bits in the bit accumulator.  If there is | ||||
|    not enough available input to do that, then return from inflateBack() with | ||||
|    an error. */ | ||||
| #define NEEDBITS(n) \ | ||||
|     do { \ | ||||
|         while (bits < (unsigned)(n)) \ | ||||
|             PULLBYTE(); \ | ||||
|     } while (0) | ||||
|  | ||||
| /* Return the low n bits of the bit accumulator (n <= 16) */ | ||||
| #define BITS(n) \ | ||||
|     ((unsigned)hold & ((1U << (n)) - 1)) | ||||
|  | ||||
| /* Remove n bits from the bit accumulator */ | ||||
| #define DROPBITS(n) \ | ||||
|     do { \ | ||||
|         hold >>= (n); \ | ||||
|         bits -= (unsigned)(n); \ | ||||
|     } while (0) | ||||
|  | ||||
| /* Remove zero to seven bits as needed to go to a byte boundary */ | ||||
| #define BYTEBITS() \ | ||||
|     do { \ | ||||
|         hold >>= bits & 7; \ | ||||
|         bits -= bits & 7; \ | ||||
|     } while (0) | ||||
|  | ||||
| /* Assure that some output space is available, by writing out the window | ||||
|    if it's full.  If the write fails, return from inflateBack() with a | ||||
|    Z_BUF_ERROR. */ | ||||
| #define ROOM() \ | ||||
|     do { \ | ||||
|         if (left == 0) { \ | ||||
|             put = window; \ | ||||
|             left = WSIZE; \ | ||||
|             wrap = 1; \ | ||||
|             if (out(out_desc, put, (unsigned)left)) { \ | ||||
|                 ret = Z_BUF_ERROR; \ | ||||
|                 goto inf_leave; \ | ||||
|             } \ | ||||
|         } \ | ||||
|     } while (0) | ||||
|  | ||||
| /* | ||||
|    strm provides the memory allocation functions and window buffer on input, | ||||
|    and provides information on the unused input on return.  For Z_DATA_ERROR | ||||
|    returns, strm will also provide an error message. | ||||
|  | ||||
|    in() and out() are the call-back input and output functions.  When | ||||
|    inflateBack() needs more input, it calls in().  When inflateBack() has | ||||
|    filled the window with output, or when it completes with data in the | ||||
|    window, it calls out() to write out the data.  The application must not | ||||
|    change the provided input until in() is called again or inflateBack() | ||||
|    returns.  The application must not change the window/output buffer until | ||||
|    inflateBack() returns. | ||||
|  | ||||
|    in() and out() are called with a descriptor parameter provided in the | ||||
|    inflateBack() call.  This parameter can be a structure that provides the | ||||
|    information required to do the read or write, as well as accumulated | ||||
|    information on the input and output such as totals and check values. | ||||
|  | ||||
|    in() should return zero on failure.  out() should return non-zero on | ||||
|    failure.  If either in() or out() fails, than inflateBack() returns a | ||||
|    Z_BUF_ERROR.  strm->next_in can be checked for Z_NULL to see whether it | ||||
|    was in() or out() that caused in the error.  Otherwise,  inflateBack() | ||||
|    returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format | ||||
|    error, or Z_MEM_ERROR if it could not allocate memory for the state. | ||||
|    inflateBack() can also return Z_STREAM_ERROR if the input parameters | ||||
|    are not correct, i.e. strm is Z_NULL or the state was not initialized. | ||||
|  */ | ||||
| int ZEXPORT inflateBack9(strm, in, in_desc, out, out_desc) | ||||
| z_stream FAR *strm; | ||||
| in_func in; | ||||
| void FAR *in_desc; | ||||
| out_func out; | ||||
| void FAR *out_desc; | ||||
| { | ||||
|     struct inflate_state FAR *state; | ||||
|     z_const unsigned char FAR *next;    /* next input */ | ||||
|     unsigned char FAR *put;     /* next output */ | ||||
|     unsigned have;              /* available input */ | ||||
|     unsigned long left;         /* available output */ | ||||
|     inflate_mode mode;          /* current inflate mode */ | ||||
|     int lastblock;              /* true if processing last block */ | ||||
|     int wrap;                   /* true if the window has wrapped */ | ||||
|     unsigned char FAR *window;  /* allocated sliding window, if needed */ | ||||
|     unsigned long hold;         /* bit buffer */ | ||||
|     unsigned bits;              /* bits in bit buffer */ | ||||
|     unsigned extra;             /* extra bits needed */ | ||||
|     unsigned long length;       /* literal or length of data to copy */ | ||||
|     unsigned long offset;       /* distance back to copy string from */ | ||||
|     unsigned long copy;         /* number of stored or match bytes to copy */ | ||||
|     unsigned char FAR *from;    /* where to copy match bytes from */ | ||||
|     code const FAR *lencode;    /* starting table for length/literal codes */ | ||||
|     code const FAR *distcode;   /* starting table for distance codes */ | ||||
|     unsigned lenbits;           /* index bits for lencode */ | ||||
|     unsigned distbits;          /* index bits for distcode */ | ||||
|     code here;                  /* current decoding table entry */ | ||||
|     code last;                  /* parent table entry */ | ||||
|     unsigned len;               /* length to copy for repeats, bits to drop */ | ||||
|     int ret;                    /* return code */ | ||||
|     static const unsigned short order[19] = /* permutation of code lengths */ | ||||
|         {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; | ||||
| #include "inffix9.h" | ||||
|  | ||||
|     /* Check that the strm exists and that the state was initialized */ | ||||
|     if (strm == Z_NULL || strm->state == Z_NULL) | ||||
|         return Z_STREAM_ERROR; | ||||
|     state = (struct inflate_state FAR *)strm->state; | ||||
|  | ||||
|     /* Reset the state */ | ||||
|     strm->msg = Z_NULL; | ||||
|     mode = TYPE; | ||||
|     lastblock = 0; | ||||
|     wrap = 0; | ||||
|     window = state->window; | ||||
|     next = strm->next_in; | ||||
|     have = next != Z_NULL ? strm->avail_in : 0; | ||||
|     hold = 0; | ||||
|     bits = 0; | ||||
|     put = window; | ||||
|     left = WSIZE; | ||||
|     lencode = Z_NULL; | ||||
|     distcode = Z_NULL; | ||||
|  | ||||
|     /* Inflate until end of block marked as last */ | ||||
|     for (;;) | ||||
|         switch (mode) { | ||||
|         case TYPE: | ||||
|             /* determine and dispatch block type */ | ||||
|             if (lastblock) { | ||||
|                 BYTEBITS(); | ||||
|                 mode = DONE; | ||||
|                 break; | ||||
|             } | ||||
|             NEEDBITS(3); | ||||
|             lastblock = BITS(1); | ||||
|             DROPBITS(1); | ||||
|             switch (BITS(2)) { | ||||
|             case 0:                             /* stored block */ | ||||
|                 Tracev((stderr, "inflate:     stored block%s\n", | ||||
|                         lastblock ? " (last)" : "")); | ||||
|                 mode = STORED; | ||||
|                 break; | ||||
|             case 1:                             /* fixed block */ | ||||
|                 lencode = lenfix; | ||||
|                 lenbits = 9; | ||||
|                 distcode = distfix; | ||||
|                 distbits = 5; | ||||
|                 Tracev((stderr, "inflate:     fixed codes block%s\n", | ||||
|                         lastblock ? " (last)" : "")); | ||||
|                 mode = LEN;                     /* decode codes */ | ||||
|                 break; | ||||
|             case 2:                             /* dynamic block */ | ||||
|                 Tracev((stderr, "inflate:     dynamic codes block%s\n", | ||||
|                         lastblock ? " (last)" : "")); | ||||
|                 mode = TABLE; | ||||
|                 break; | ||||
|             case 3: | ||||
|                 strm->msg = (char *)"invalid block type"; | ||||
|                 mode = BAD; | ||||
|             } | ||||
|             DROPBITS(2); | ||||
|             break; | ||||
|  | ||||
|         case STORED: | ||||
|             /* get and verify stored block length */ | ||||
|             BYTEBITS();                         /* go to byte boundary */ | ||||
|             NEEDBITS(32); | ||||
|             if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { | ||||
|                 strm->msg = (char *)"invalid stored block lengths"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             length = (unsigned)hold & 0xffff; | ||||
|             Tracev((stderr, "inflate:       stored length %lu\n", | ||||
|                     length)); | ||||
|             INITBITS(); | ||||
|  | ||||
|             /* copy stored block from input to output */ | ||||
|             while (length != 0) { | ||||
|                 copy = length; | ||||
|                 PULL(); | ||||
|                 ROOM(); | ||||
|                 if (copy > have) copy = have; | ||||
|                 if (copy > left) copy = left; | ||||
|                 zmemcpy(put, next, copy); | ||||
|                 have -= copy; | ||||
|                 next += copy; | ||||
|                 left -= copy; | ||||
|                 put += copy; | ||||
|                 length -= copy; | ||||
|             } | ||||
|             Tracev((stderr, "inflate:       stored end\n")); | ||||
|             mode = TYPE; | ||||
|             break; | ||||
|  | ||||
|         case TABLE: | ||||
|             /* get dynamic table entries descriptor */ | ||||
|             NEEDBITS(14); | ||||
|             state->nlen = BITS(5) + 257; | ||||
|             DROPBITS(5); | ||||
|             state->ndist = BITS(5) + 1; | ||||
|             DROPBITS(5); | ||||
|             state->ncode = BITS(4) + 4; | ||||
|             DROPBITS(4); | ||||
|             if (state->nlen > 286) { | ||||
|                 strm->msg = (char *)"too many length symbols"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             Tracev((stderr, "inflate:       table sizes ok\n")); | ||||
|  | ||||
|             /* get code length code lengths (not a typo) */ | ||||
|             state->have = 0; | ||||
|             while (state->have < state->ncode) { | ||||
|                 NEEDBITS(3); | ||||
|                 state->lens[order[state->have++]] = (unsigned short)BITS(3); | ||||
|                 DROPBITS(3); | ||||
|             } | ||||
|             while (state->have < 19) | ||||
|                 state->lens[order[state->have++]] = 0; | ||||
|             state->next = state->codes; | ||||
|             lencode = (code const FAR *)(state->next); | ||||
|             lenbits = 7; | ||||
|             ret = inflate_table9(CODES, state->lens, 19, &(state->next), | ||||
|                                 &(lenbits), state->work); | ||||
|             if (ret) { | ||||
|                 strm->msg = (char *)"invalid code lengths set"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             Tracev((stderr, "inflate:       code lengths ok\n")); | ||||
|  | ||||
|             /* get length and distance code code lengths */ | ||||
|             state->have = 0; | ||||
|             while (state->have < state->nlen + state->ndist) { | ||||
|                 for (;;) { | ||||
|                     here = lencode[BITS(lenbits)]; | ||||
|                     if ((unsigned)(here.bits) <= bits) break; | ||||
|                     PULLBYTE(); | ||||
|                 } | ||||
|                 if (here.val < 16) { | ||||
|                     NEEDBITS(here.bits); | ||||
|                     DROPBITS(here.bits); | ||||
|                     state->lens[state->have++] = here.val; | ||||
|                 } | ||||
|                 else { | ||||
|                     if (here.val == 16) { | ||||
|                         NEEDBITS(here.bits + 2); | ||||
|                         DROPBITS(here.bits); | ||||
|                         if (state->have == 0) { | ||||
|                             strm->msg = (char *)"invalid bit length repeat"; | ||||
|                             mode = BAD; | ||||
|                             break; | ||||
|                         } | ||||
|                         len = (unsigned)(state->lens[state->have - 1]); | ||||
|                         copy = 3 + BITS(2); | ||||
|                         DROPBITS(2); | ||||
|                     } | ||||
|                     else if (here.val == 17) { | ||||
|                         NEEDBITS(here.bits + 3); | ||||
|                         DROPBITS(here.bits); | ||||
|                         len = 0; | ||||
|                         copy = 3 + BITS(3); | ||||
|                         DROPBITS(3); | ||||
|                     } | ||||
|                     else { | ||||
|                         NEEDBITS(here.bits + 7); | ||||
|                         DROPBITS(here.bits); | ||||
|                         len = 0; | ||||
|                         copy = 11 + BITS(7); | ||||
|                         DROPBITS(7); | ||||
|                     } | ||||
|                     if (state->have + copy > state->nlen + state->ndist) { | ||||
|                         strm->msg = (char *)"invalid bit length repeat"; | ||||
|                         mode = BAD; | ||||
|                         break; | ||||
|                     } | ||||
|                     while (copy--) | ||||
|                         state->lens[state->have++] = (unsigned short)len; | ||||
|                 } | ||||
|             } | ||||
|  | ||||
|             /* handle error breaks in while */ | ||||
|             if (mode == BAD) break; | ||||
|  | ||||
|             /* check for end-of-block code (better have one) */ | ||||
|             if (state->lens[256] == 0) { | ||||
|                 strm->msg = (char *)"invalid code -- missing end-of-block"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|  | ||||
|             /* build code tables -- note: do not change the lenbits or distbits | ||||
|                values here (9 and 6) without reading the comments in inftree9.h | ||||
|                concerning the ENOUGH constants, which depend on those values */ | ||||
|             state->next = state->codes; | ||||
|             lencode = (code const FAR *)(state->next); | ||||
|             lenbits = 9; | ||||
|             ret = inflate_table9(LENS, state->lens, state->nlen, | ||||
|                             &(state->next), &(lenbits), state->work); | ||||
|             if (ret) { | ||||
|                 strm->msg = (char *)"invalid literal/lengths set"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             distcode = (code const FAR *)(state->next); | ||||
|             distbits = 6; | ||||
|             ret = inflate_table9(DISTS, state->lens + state->nlen, | ||||
|                             state->ndist, &(state->next), &(distbits), | ||||
|                             state->work); | ||||
|             if (ret) { | ||||
|                 strm->msg = (char *)"invalid distances set"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             Tracev((stderr, "inflate:       codes ok\n")); | ||||
|             mode = LEN; | ||||
|  | ||||
|         case LEN: | ||||
|             /* get a literal, length, or end-of-block code */ | ||||
|             for (;;) { | ||||
|                 here = lencode[BITS(lenbits)]; | ||||
|                 if ((unsigned)(here.bits) <= bits) break; | ||||
|                 PULLBYTE(); | ||||
|             } | ||||
|             if (here.op && (here.op & 0xf0) == 0) { | ||||
|                 last = here; | ||||
|                 for (;;) { | ||||
|                     here = lencode[last.val + | ||||
|                             (BITS(last.bits + last.op) >> last.bits)]; | ||||
|                     if ((unsigned)(last.bits + here.bits) <= bits) break; | ||||
|                     PULLBYTE(); | ||||
|                 } | ||||
|                 DROPBITS(last.bits); | ||||
|             } | ||||
|             DROPBITS(here.bits); | ||||
|             length = (unsigned)here.val; | ||||
|  | ||||
|             /* process literal */ | ||||
|             if (here.op == 0) { | ||||
|                 Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? | ||||
|                         "inflate:         literal '%c'\n" : | ||||
|                         "inflate:         literal 0x%02x\n", here.val)); | ||||
|                 ROOM(); | ||||
|                 *put++ = (unsigned char)(length); | ||||
|                 left--; | ||||
|                 mode = LEN; | ||||
|                 break; | ||||
|             } | ||||
|  | ||||
|             /* process end of block */ | ||||
|             if (here.op & 32) { | ||||
|                 Tracevv((stderr, "inflate:         end of block\n")); | ||||
|                 mode = TYPE; | ||||
|                 break; | ||||
|             } | ||||
|  | ||||
|             /* invalid code */ | ||||
|             if (here.op & 64) { | ||||
|                 strm->msg = (char *)"invalid literal/length code"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|  | ||||
|             /* length code -- get extra bits, if any */ | ||||
|             extra = (unsigned)(here.op) & 31; | ||||
|             if (extra != 0) { | ||||
|                 NEEDBITS(extra); | ||||
|                 length += BITS(extra); | ||||
|                 DROPBITS(extra); | ||||
|             } | ||||
|             Tracevv((stderr, "inflate:         length %lu\n", length)); | ||||
|  | ||||
|             /* get distance code */ | ||||
|             for (;;) { | ||||
|                 here = distcode[BITS(distbits)]; | ||||
|                 if ((unsigned)(here.bits) <= bits) break; | ||||
|                 PULLBYTE(); | ||||
|             } | ||||
|             if ((here.op & 0xf0) == 0) { | ||||
|                 last = here; | ||||
|                 for (;;) { | ||||
|                     here = distcode[last.val + | ||||
|                             (BITS(last.bits + last.op) >> last.bits)]; | ||||
|                     if ((unsigned)(last.bits + here.bits) <= bits) break; | ||||
|                     PULLBYTE(); | ||||
|                 } | ||||
|                 DROPBITS(last.bits); | ||||
|             } | ||||
|             DROPBITS(here.bits); | ||||
|             if (here.op & 64) { | ||||
|                 strm->msg = (char *)"invalid distance code"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             offset = (unsigned)here.val; | ||||
|  | ||||
|             /* get distance extra bits, if any */ | ||||
|             extra = (unsigned)(here.op) & 15; | ||||
|             if (extra != 0) { | ||||
|                 NEEDBITS(extra); | ||||
|                 offset += BITS(extra); | ||||
|                 DROPBITS(extra); | ||||
|             } | ||||
|             if (offset > WSIZE - (wrap ? 0: left)) { | ||||
|                 strm->msg = (char *)"invalid distance too far back"; | ||||
|                 mode = BAD; | ||||
|                 break; | ||||
|             } | ||||
|             Tracevv((stderr, "inflate:         distance %lu\n", offset)); | ||||
|  | ||||
|             /* copy match from window to output */ | ||||
|             do { | ||||
|                 ROOM(); | ||||
|                 copy = WSIZE - offset; | ||||
|                 if (copy < left) { | ||||
|                     from = put + copy; | ||||
|                     copy = left - copy; | ||||
|                 } | ||||
|                 else { | ||||
|                     from = put - offset; | ||||
|                     copy = left; | ||||
|                 } | ||||
|                 if (copy > length) copy = length; | ||||
|                 length -= copy; | ||||
|                 left -= copy; | ||||
|                 do { | ||||
|                     *put++ = *from++; | ||||
|                 } while (--copy); | ||||
|             } while (length != 0); | ||||
|             break; | ||||
|  | ||||
|         case DONE: | ||||
|             /* inflate stream terminated properly -- write leftover output */ | ||||
|             ret = Z_STREAM_END; | ||||
|             if (left < WSIZE) { | ||||
|                 if (out(out_desc, window, (unsigned)(WSIZE - left))) | ||||
|                     ret = Z_BUF_ERROR; | ||||
|             } | ||||
|             goto inf_leave; | ||||
|  | ||||
|         case BAD: | ||||
|             ret = Z_DATA_ERROR; | ||||
|             goto inf_leave; | ||||
|  | ||||
|         default:                /* can't happen, but makes compilers happy */ | ||||
|             ret = Z_STREAM_ERROR; | ||||
|             goto inf_leave; | ||||
|         } | ||||
|  | ||||
|     /* Return unused input */ | ||||
|   inf_leave: | ||||
|     strm->next_in = next; | ||||
|     strm->avail_in = have; | ||||
|     return ret; | ||||
| } | ||||
|  | ||||
| int ZEXPORT inflateBack9End(strm) | ||||
| z_stream FAR *strm; | ||||
| { | ||||
|     if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) | ||||
|         return Z_STREAM_ERROR; | ||||
|     ZFREE(strm, strm->state); | ||||
|     strm->state = Z_NULL; | ||||
|     Tracev((stderr, "inflate: end\n")); | ||||
|     return Z_OK; | ||||
| } | ||||
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