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