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1 /* zutil.h (internal interface of the zlib compression library) */
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2
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3 /* Modified by Andrew Makhorin <mao@gnu.org>, April 2011 */
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4
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5 /* Copyright (C) 1995-2010 Jean-loup Gailly
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6 * For conditions of distribution and use, see copyright notice in
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7 * zlib.h */
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8
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9 /* WARNING: this file should *not* be used by applications. It is
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10 part of the implementation of the compression library and is
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11 subject to change. Applications should only use zlib.h. */
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12
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13 #ifndef ZUTIL_H
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14 #define ZUTIL_H
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15
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16 #define ZLIB_INTERNAL
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17
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18 #include "zlib.h"
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19
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20 #include <stddef.h>
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21 #include <string.h>
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22 #include <stdlib.h>
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23
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24 #define local static
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25
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26 typedef unsigned char uch;
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27 typedef uch uchf;
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28 typedef unsigned short ush;
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29 typedef ush ushf;
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30 typedef unsigned long ulg;
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31
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32 extern const char * const z_errmsg[10];
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33
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34 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
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35
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36 #define ERR_RETURN(strm, err) \
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37 return (strm->msg = (char *)ERR_MSG(err), (err))
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38
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39 #define DEF_WBITS MAX_WBITS
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40
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41 #if MAX_MEM_LEVEL >= 8
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42 #define DEF_MEM_LEVEL 8
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43 #else
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44 #define DEF_MEM_LEVEL MAX_MEM_LEVEL
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45 #endif
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46
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47 #define STORED_BLOCK 0
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48 #define STATIC_TREES 1
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49 #define DYN_TREES 2
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50
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51 #define MIN_MATCH 3
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52 #define MAX_MATCH 258
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53
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54 #define PRESET_DICT 0x20
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55
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56 #define OS_CODE 0x03 /* assume Unix */
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57
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58 #define HAVE_MEMCPY 1
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59 #define zmemcpy memcpy
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60 #define zmemzero(dest, len) memset(dest, 0, len)
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61
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62 #ifdef DEBUG
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63 #include <stdio.h>
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64 extern int ZLIB_INTERNAL z_verbose;
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65 extern void ZLIB_INTERNAL z_error OF((char *m));
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66 #define Assert(cond, msg) { if(!(cond)) z_error(msg); }
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67 #define Trace(x) { if (z_verbose >= 0) fprintf x; }
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68 #define Tracev(x) { if (z_verbose > 0) fprintf x; }
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69 #define Tracevv(x) {if (z_verbose > 1) fprintf x; }
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70 #define Tracec(c, x) {if (z_verbose > 0 && (c)) fprintf x; }
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71 #define Tracecv(c, x) {if (z_verbose > 1 && (c)) fprintf x; }
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72 #else
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73 #define Assert(cond, msg)
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74 #define Trace(x)
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75 #define Tracev(x)
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76 #define Tracevv(x)
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77 #define Tracec(c, x)
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78 #define Tracecv(c, x)
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79 #endif
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80
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81 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
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82 unsigned size));
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83 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
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84
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85 #define ZALLOC(strm, items, size) \
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86 (*((strm)->zalloc))((strm)->opaque, (items), (size))
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87 #define ZFREE(strm, addr) \
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88 (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
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89 #define TRY_FREE(s, p) { if (p) ZFREE(s, p); }
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90
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91 #endif
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92
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93 /* eof */
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