1*e89516f0SMike Frysinger /* zutil.c -- target dependent utility functions for the compression library 2*e89516f0SMike Frysinger * Copyright (C) 1995-2005 Jean-loup Gailly. 3*e89516f0SMike Frysinger * For conditions of distribution and use, see copyright notice in zlib.h 4*e89516f0SMike Frysinger */ 5*e89516f0SMike Frysinger 6*e89516f0SMike Frysinger /* @(#) $Id$ */ 7*e89516f0SMike Frysinger 8*e89516f0SMike Frysinger #include "zutil.h" 9*e89516f0SMike Frysinger 10*e89516f0SMike Frysinger #ifndef NO_DUMMY_DECL 11*e89516f0SMike Frysinger struct internal_state {int dummy;}; /* for buggy compilers */ 12*e89516f0SMike Frysinger #endif 13*e89516f0SMike Frysinger 14*e89516f0SMike Frysinger const char * const z_errmsg[10] = { 15*e89516f0SMike Frysinger "need dictionary", /* Z_NEED_DICT 2 */ 16*e89516f0SMike Frysinger "stream end", /* Z_STREAM_END 1 */ 17*e89516f0SMike Frysinger "", /* Z_OK 0 */ 18*e89516f0SMike Frysinger "file error", /* Z_ERRNO (-1) */ 19*e89516f0SMike Frysinger "stream error", /* Z_STREAM_ERROR (-2) */ 20*e89516f0SMike Frysinger "data error", /* Z_DATA_ERROR (-3) */ 21*e89516f0SMike Frysinger "insufficient memory", /* Z_MEM_ERROR (-4) */ 22*e89516f0SMike Frysinger "buffer error", /* Z_BUF_ERROR (-5) */ 23*e89516f0SMike Frysinger "incompatible version",/* Z_VERSION_ERROR (-6) */ 24*e89516f0SMike Frysinger ""}; 25*e89516f0SMike Frysinger 26*e89516f0SMike Frysinger #ifdef DEBUG 27*e89516f0SMike Frysinger 28*e89516f0SMike Frysinger #ifndef verbose 29*e89516f0SMike Frysinger #define verbose 0 30*e89516f0SMike Frysinger #endif 31*e89516f0SMike Frysinger int z_verbose = verbose; 32*e89516f0SMike Frysinger 33*e89516f0SMike Frysinger void z_error (m) 34*e89516f0SMike Frysinger char *m; 35*e89516f0SMike Frysinger { 36*e89516f0SMike Frysinger fprintf(stderr, "%s\n", m); 37*e89516f0SMike Frysinger hang (); 38*e89516f0SMike Frysinger } 39*e89516f0SMike Frysinger #endif 40*e89516f0SMike Frysinger 41*e89516f0SMike Frysinger /* exported to allow conversion of error code to string for compress() and 42*e89516f0SMike Frysinger * uncompress() 43*e89516f0SMike Frysinger */ 44*e89516f0SMike Frysinger #ifndef MY_ZCALLOC /* Any system without a special alloc function */ 45*e89516f0SMike Frysinger 46*e89516f0SMike Frysinger #ifndef STDC 47*e89516f0SMike Frysinger extern voidp malloc OF((uInt size)); 48*e89516f0SMike Frysinger extern voidp calloc OF((uInt items, uInt size)); 49*e89516f0SMike Frysinger extern void free OF((voidpf ptr)); 50*e89516f0SMike Frysinger #endif 51*e89516f0SMike Frysinger 52*e89516f0SMike Frysinger voidpf zcalloc (opaque, items, size) 53*e89516f0SMike Frysinger voidpf opaque; 54*e89516f0SMike Frysinger unsigned items; 55*e89516f0SMike Frysinger unsigned size; 56*e89516f0SMike Frysinger { 57*e89516f0SMike Frysinger if (opaque) 58*e89516f0SMike Frysinger items += size - size; /* make compiler happy */ 59*e89516f0SMike Frysinger return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) : 60*e89516f0SMike Frysinger (voidpf)calloc(items, size); 61*e89516f0SMike Frysinger } 62*e89516f0SMike Frysinger 63*e89516f0SMike Frysinger void zcfree (opaque, ptr, nb) 64*e89516f0SMike Frysinger voidpf opaque; 65*e89516f0SMike Frysinger voidpf ptr; 66*e89516f0SMike Frysinger unsigned nb; 67*e89516f0SMike Frysinger { 68*e89516f0SMike Frysinger free(ptr); 69*e89516f0SMike Frysinger if (opaque) 70*e89516f0SMike Frysinger return; /* make compiler happy */ 71*e89516f0SMike Frysinger } 72*e89516f0SMike Frysinger 73*e89516f0SMike Frysinger #endif /* MY_ZCALLOC */ 74