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
12 struct internal_state {int dummy;}; /* for buggy compilers */
13 #endif
14
15 const 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 "incompatible version",/* Z_VERSION_ERROR (-6) */
25 ""};
26
27 #ifdef DEBUG
28
29 #ifndef verbose
30 #define verbose 0
31 #endif
32 int z_verbose = verbose;
33
z_error(m)34 void z_error (m)
35 char *m;
36 {
37 fprintf(stderr, "%s\n", m);
38 hang();
39 }
40 #endif
41
42 /* exported to allow conversion of error code to string for compress() and
43 * uncompress()
44 */
45 #ifndef MY_ZCALLOC /* Any system without a special alloc function */
46
47 #ifdef __UBOOT__
48 #include <malloc.h>
49 #else
50 #ifndef STDC
51 extern voidp malloc OF((uInt size));
52 extern voidp calloc OF((uInt items, uInt size));
53 extern void free OF((voidpf ptr));
54 #endif
55 #endif
56
zcalloc(voidpf opaque,unsigned items,unsigned size)57 voidpf zcalloc(voidpf opaque, unsigned items, unsigned size)
58 {
59 if (opaque)
60 items += size - size; /* make compiler happy */
61 return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
62 (voidpf)calloc(items, size);
63 }
64
zcfree(voidpf opaque,voidpf ptr,unsigned nb)65 void zcfree(voidpf opaque, voidpf ptr, unsigned nb)
66 {
67 free(ptr);
68 if (opaque)
69 return; /* make compiler happy */
70 }
71
72 #endif /* MY_ZCALLOC */
73