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 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 #ifndef STDC 47 extern voidp malloc OF((uInt size)); 48 extern voidp calloc OF((uInt items, uInt size)); 49 extern void free OF((voidpf ptr)); 50 #endif 51 52 voidpf zcalloc (opaque, items, size) 53 voidpf opaque; 54 unsigned items; 55 unsigned size; 56 { 57 if (opaque) 58 items += size - size; /* make compiler happy */ 59 return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) : 60 (voidpf)calloc(items, size); 61 } 62 63 void zcfree (opaque, ptr, nb) 64 voidpf opaque; 65 voidpf ptr; 66 unsigned nb; 67 { 68 free(ptr); 69 if (opaque) 70 return; /* make compiler happy */ 71 } 72 73 #endif /* MY_ZCALLOC */ 74