/* zutil.c -- target dependent utility functions for the compression library
   * Copyright (C) 1995-2005 Jean-loup Gailly.
   * For conditions of distribution and use, see copyright notice in zlib.h
   */
  
  /* @(#) $Id$ */
  
  #include "zutil.h"
  
  #ifndef NO_DUMMY_DECL
  struct internal_state      {int dummy;}; /* for buggy compilers */
  #endif
  
  const char * const z_errmsg[10] = {
  "need dictionary",     /* Z_NEED_DICT       2  */
  "stream end",          /* Z_STREAM_END      1  */
  "",                    /* Z_OK              0  */
  "file error",          /* Z_ERRNO         (-1) */
  "stream error",        /* Z_STREAM_ERROR  (-2) */
  "data error",          /* Z_DATA_ERROR    (-3) */
  "insufficient memory", /* Z_MEM_ERROR     (-4) */
  "buffer error",        /* Z_BUF_ERROR     (-5) */
  "incompatible version",/* Z_VERSION_ERROR (-6) */
  ""};
  
  #ifdef DEBUG
  
  #ifndef verbose
  #define verbose 0
  #endif
  int z_verbose = verbose;
  
  void z_error (m)
      char *m;
  {
  	fprintf(stderr, "%s
  ", m);
  	hang ();
  }
  #endif
  
  /* exported to allow conversion of error code to string for compress() and
   * uncompress()
   */
  #ifndef MY_ZCALLOC /* Any system without a special alloc function */
  
  #ifndef STDC
  extern voidp    malloc OF((uInt size));
  extern voidp    calloc OF((uInt items, uInt size));
  extern void     free   OF((voidpf ptr));
  #endif
  
  voidpf zcalloc(voidpf opaque, unsigned items, unsigned size)
  {
  	if (opaque)
  		items += size - size; /* make compiler happy */
  	return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
  		(voidpf)calloc(items, size);
  }
  
  void  zcfree(voidpf opaque, voidpf ptr, unsigned nb)
  {
  	free(ptr);
  	if (opaque)
  		return; /* make compiler happy */
  }
  
  #endif /* MY_ZCALLOC */