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
10 #ifndef NO_DUMMY_DECL
11 struct internal_state {int dummy;}; /* for buggy compilers */
12 #endif
13
14 const 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
31 int z_verbose = verbose;
32
z_error(m)33 void 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
50 extern voidp malloc OF((uInt size));
51 extern voidp calloc OF((uInt items, uInt size));
52 extern void free OF((voidpf ptr));
53 #endif
54 #endif
55
zcalloc(voidpf opaque,unsigned items,unsigned size)56 voidpf 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
zcfree(voidpf opaque,voidpf ptr,unsigned nb)64 void 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