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156 lines
3.5 KiB
C
156 lines
3.5 KiB
C
/* 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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#ifndef Z_SOLO
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# include "gzguts.h"
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#endif
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char z_errmsg[10][21] = {
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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 * zlibVersion(void)
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{
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return ZLIB_VERSION;
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}
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uLong zlibCompileFlags(void)
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{
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uLong flags;
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flags = 0;
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switch ((int)(sizeof(uInt))) {
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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(uLong))) {
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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(voidpf))) {
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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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#if defined(ASMV) || defined(ASMINF)
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flags += 1 << 9;
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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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#ifdef FASTEST
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flags += 1L << 21;
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#endif
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#if defined(STDC) || defined(Z_HAVE_STDARG_H)
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# ifdef NO_vsnprintf
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flags += 1L << 25;
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# ifdef HAS_vsprintf_void
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flags += 1L << 26;
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# endif
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# else
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# ifdef HAS_vsnprintf_void
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flags += 1L << 26;
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# endif
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# endif
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#else
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flags += 1L << 24;
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# ifdef NO_snprintf
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flags += 1L << 25;
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# ifdef HAS_sprintf_void
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flags += 1L << 26;
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# endif
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# else
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# ifdef HAS_snprintf_void
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flags += 1L << 26;
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# endif
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# endif
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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 (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 * zError(int err)
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{
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return ERR_MSG(err);
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}
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#if defined(_WIN32_WCE)
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/* The Microsoft C Run-Time Library for Windows CE doesn't have
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* errno. We define it as a global variable to simplify porting.
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* Its value is always 0 and should not be used.
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*/
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int errno = 0;
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#endif
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voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
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{
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if (opaque) items += size - size; /* make compiler happy */
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return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
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(voidpf)calloc(items, size);
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}
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void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
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{
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free(ptr);
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if (opaque) return; /* make compiler happy */
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}
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