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125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
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/* zutil.c -- target dependent utility functions for the compression library
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* Copyright (C) 1995-2005, 2010, 2011, 2012 Jean-loup Gailly.
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* @(#) $Id$ */
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#include "zutil.h"
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#ifdef WITH_GZFILEOP
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# include "gzguts.h"
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#endif
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const char * const z_errmsg[10] = {
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"need dictionary", /* Z_NEED_DICT 2 */
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"stream end", /* Z_STREAM_END 1 */
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"", /* Z_OK 0 */
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"file error", /* Z_ERRNO (-1) */
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"stream error", /* Z_STREAM_ERROR (-2) */
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"data error", /* Z_DATA_ERROR (-3) */
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"insufficient memory", /* Z_MEM_ERROR (-4) */
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"buffer error", /* Z_BUF_ERROR (-5) */
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"incompatible version",/* Z_VERSION_ERROR (-6) */
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""};
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const char zlibng_string[] =
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" zlib-ng 1.9.9 forked from zlib 1.2.8 ";
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const char * ZEXPORT zlibVersion(void)
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{
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return ZLIB_VERSION;
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}
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unsigned long ZEXPORT zlibCompileFlags(void)
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{
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unsigned long flags;
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flags = 0;
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switch ((int)(sizeof(unsigned int))) {
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case 2: break;
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case 4: flags += 1; break;
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case 8: flags += 2; break;
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default: flags += 3;
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}
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switch ((int)(sizeof(unsigned long))) {
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case 2: break;
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case 4: flags += 1 << 2; break;
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case 8: flags += 2 << 2; break;
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default: flags += 3 << 2;
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}
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switch ((int)(sizeof(void *))) {
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case 2: break;
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case 4: flags += 1 << 4; break;
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case 8: flags += 2 << 4; break;
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default: flags += 3 << 4;
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}
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switch ((int)(sizeof(z_off_t))) {
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case 2: break;
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case 4: flags += 1 << 6; break;
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case 8: flags += 2 << 6; break;
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default: flags += 3 << 6;
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}
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#ifdef DEBUG
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flags += 1 << 8;
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#endif
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#ifdef ZLIB_WINAPI
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flags += 1 << 10;
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#endif
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#ifdef BUILDFIXED
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flags += 1 << 12;
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#endif
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#ifdef DYNAMIC_CRC_TABLE
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flags += 1 << 13;
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#endif
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#ifdef NO_GZCOMPRESS
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flags += 1L << 16;
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#endif
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#ifdef NO_GZIP
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flags += 1L << 17;
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#endif
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#ifdef PKZIP_BUG_WORKAROUND
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flags += 1L << 20;
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#endif
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return flags;
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}
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#ifdef DEBUG
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# ifndef verbose
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# define verbose 0
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# endif
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int ZLIB_INTERNAL z_verbose = verbose;
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void ZLIB_INTERNAL z_error (m)
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char *m;
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{
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fprintf(stderr, "%s\n", m);
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exit(1);
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}
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#endif
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/* exported to allow conversion of error code to string for compress() and
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* uncompress()
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*/
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const char * ZEXPORT zError(int err)
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{
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return ERR_MSG(err);
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}
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#ifndef MY_ZCALLOC /* Any system without a special alloc function */
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void ZLIB_INTERNAL *zcalloc (void *opaque, unsigned items, unsigned size)
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{
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(void)opaque;
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return sizeof(unsigned int) > 2 ? (void *)malloc(items * size) :
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(void *)calloc(items, size);
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}
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void ZLIB_INTERNAL zcfree (void *opaque, void *ptr)
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{
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(void)opaque;
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free(ptr);
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}
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#endif /* MY_ZCALLOC */
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