1/* 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#include <hang.h>
10
11#ifndef NO_DUMMY_DECL
12struct internal_state      {int dummy;}; /* for buggy compilers */
13#endif
14
15const char * const z_errmsg[10] = {
16"need dictionary",     /* Z_NEED_DICT       2  */
17"stream end",          /* Z_STREAM_END      1  */
18"",                    /* Z_OK              0  */
19"file error",          /* Z_ERRNO         (-1) */
20"stream error",        /* Z_STREAM_ERROR  (-2) */
21"data error",          /* Z_DATA_ERROR    (-3) */
22"insufficient memory", /* Z_MEM_ERROR     (-4) */
23"buffer error",        /* Z_BUF_ERROR     (-5) */
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#ifdef __UBOOT__
47#include <malloc.h>
48#else
49#ifndef STDC
50extern voidp    malloc OF((uInt size));
51extern voidp    calloc OF((uInt items, uInt size));
52extern void     free   OF((voidpf ptr));
53#endif
54#endif
55
56voidpf zcalloc(voidpf opaque, unsigned items, unsigned size)
57{
58	if (opaque)
59		items += size - size; /* make compiler happy */
60	return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
61		(voidpf)calloc(items, size);
62}
63
64void  zcfree(voidpf opaque, voidpf ptr, unsigned nb)
65{
66	free(ptr);
67	if (opaque)
68		return; /* make compiler happy */
69}
70
71#endif /* MY_ZCALLOC */
72