blob: 14f6eb1e07d9d65a20231119d693231d1ed49c1a [file] [log] [blame]
Mike Frysingere89516f2011-04-08 12:23:30 +00001/* zutil.c -- target dependent utility functions for the compression library
2 * Copyright (C) 1995-2005 Jean-loup Gailly.
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
6/* @(#) $Id$ */
7
8#include "zutil.h"
9
10#ifndef NO_DUMMY_DECL
11struct internal_state {int dummy;}; /* for buggy compilers */
12#endif
13
14const char * const z_errmsg[10] = {
15"need dictionary", /* Z_NEED_DICT 2 */
16"stream end", /* Z_STREAM_END 1 */
17"", /* Z_OK 0 */
18"file error", /* Z_ERRNO (-1) */
19"stream error", /* Z_STREAM_ERROR (-2) */
20"data error", /* Z_DATA_ERROR (-3) */
21"insufficient memory", /* Z_MEM_ERROR (-4) */
22"buffer error", /* Z_BUF_ERROR (-5) */
23"incompatible version",/* Z_VERSION_ERROR (-6) */
24""};
25
26#ifdef DEBUG
27
28#ifndef verbose
29#define verbose 0
30#endif
31int z_verbose = verbose;
32
33void z_error (m)
34 char *m;
35{
36 fprintf(stderr, "%s\n", m);
37 hang ();
38}
39#endif
40
41/* exported to allow conversion of error code to string for compress() and
42 * uncompress()
43 */
44#ifndef MY_ZCALLOC /* Any system without a special alloc function */
45
46#ifndef STDC
47extern voidp malloc OF((uInt size));
48extern voidp calloc OF((uInt items, uInt size));
49extern void free OF((voidpf ptr));
50#endif
51
Kim Phillipsee820b52012-10-29 13:34:35 +000052voidpf zcalloc(voidpf opaque, unsigned items, unsigned size)
Mike Frysingere89516f2011-04-08 12:23:30 +000053{
54 if (opaque)
55 items += size - size; /* make compiler happy */
56 return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
57 (voidpf)calloc(items, size);
58}
59
Kim Phillipsee820b52012-10-29 13:34:35 +000060void zcfree(voidpf opaque, voidpf ptr, unsigned nb)
Mike Frysingere89516f2011-04-08 12:23:30 +000061{
62 free(ptr);
63 if (opaque)
64 return; /* make compiler happy */
65}
66
67#endif /* MY_ZCALLOC */