1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
(*
* zlib pascal headers
* This file is part of Free Pascal, released under the LGPL.
*)
{$ifdef FPC}
{$ifndef NO_SMART_LINK}
{$smartlink on}
{$endif}
{$endif}
unit zlib;
interface
{$ifdef FPC}
{$mode objfpc} // Needed for array of const
{$H+} // use AnsiString
{$PACKRECORDS C}
{$endif}
uses
ctypes;
const
ZLIB_VERSION = '1.2.3';
{$ifdef MSWINDOWS}
libz = 'zlib1';
{$else}
libz = 'z';
{$IFDEF DARWIN}
{$linklib libz}
{$ENDIF}
{$endif}
type
{ Compatible with paszlib }
uInt = cuint;
uLong = culong;
uLongf = uLong; {FAR}
PuLongf = ^uLongf;
z_off_t = clong;
pbyte = ^byte;
bytef = byte; {FAR}
pbytef = ^byte;
voidpf = pointer;
TAllocfunc = function (opaque: voidpf; items: uInt; size: uInt): voidpf; cdecl;
TFreeFunc = procedure (opaque: voidpf; address: voidpf); cdecl;
TInternalState = record
end;
PInternalState = ^TInternalstate;
TZStream = record
next_in: pbytef;
avail_in: uInt;
total_in: uLong;
next_out: pbytef;
avail_out: uInt;
total_out: uLong;
msg: pchar;
state: PInternalState;
zalloc: TAllocFunc;
zfree: TFreeFunc;
opaque: voidpf;
data_type: cint;
adler: uLong;
reserved: uLong;
end;
TZStreamRec = TZStream;
PZstream = ^TZStream;
gzFile = pointer;
const
Z_NO_FLUSH = 0;
Z_PARTIAL_FLUSH = 1;
Z_SYNC_FLUSH = 2;
Z_FULL_FLUSH = 3;
Z_FINISH = 4;
Z_BLOCK = 5;
Z_OK = 0;
Z_STREAM_END = 1;
Z_NEED_DICT = 2;
Z_ERRNO = -(1);
Z_STREAM_ERROR = -(2);
Z_DATA_ERROR = -(3);
Z_MEM_ERROR = -(4);
Z_BUF_ERROR = -(5);
Z_VERSION_ERROR = -(6);
Z_NO_COMPRESSION = 0;
Z_BEST_SPEED = 1;
Z_BEST_COMPRESSION = 9;
Z_DEFAULT_COMPRESSION = -(1);
Z_FILTERED = 1;
Z_HUFFMAN_ONLY = 2;
Z_RLE = 3;
Z_FIXED = 4;
Z_DEFAULT_STRATEGY = 0;
Z_BINARY = 0;
Z_TEXT = 1;
Z_ASCII = Z_TEXT;
Z_UNKNOWN = 2;
Z_DEFLATED = 8;
Z_NULL = 0;
function zlibVersionpchar(): pchar; cdecl; external libz name 'zlibVersion';
function zlibVersion(): string;
function deflate(var strm: TZStream; flush: integer): integer; cdecl; external libz name 'deflate';
function deflateEnd(var strm: TZStream): integer; cdecl; external libz name 'deflateEnd';
function inflate(var strm: TZStream; flush: integer): integer; cdecl; external libz name 'inflate';
function inflateEnd(var strm: TZStream): integer; cdecl; external libz name 'inflateEnd';
function deflateSetDictionary(var strm: TZStream; dictionary: pbytef; dictLength: uInt): integer; cdecl; external libz name 'deflateSetDictionary';
function deflateCopy(var dest, source: TZstream): integer; cdecl; external libz name 'deflateCopy';
function deflateReset(var strm: TZStream): integer; cdecl; external libz name 'deflateReset';
function deflateParams(var strm: TZStream; level: integer; strategy: integer): integer; cdecl; external libz name 'deflateParams';
//...
function inflateSetDictionary(var strm: TZStream; dictionary: pbytef; dictLength: uInt): integer; cdecl; external libz name 'inflateSetDictionary';
function inflateSync(var strm: TZStream): integer; cdecl; external libz name 'inflateSync';
//...
function inflateReset(var strm: TZStream): integer; cdecl; external libz name 'inflateReset';
function compress(dest: pbytef; destLen: puLongf; source : pbytef; sourceLen: uLong): integer; cdecl; external libz name 'compress';
function compress2(dest: pbytef; destLen: puLongf; source : pbytef; sourceLen: uLong; level: integer): integer; cdecl; external libz name 'compress2';
function uncompress(dest: pbytef; destLen: puLongf; source : pbytef; sourceLen: uLong): integer; cdecl; external libz name 'uncompress';
function gzopen(path: pchar; mode: pchar): gzFile; cdecl; external libz name 'gzopen';
function gzdopen(fd: integer; mode: pchar): gzFile; cdecl; external libz name 'gzdopen';
function gzsetparams(thefile: gzFile; level: integer; strategy: integer): integer; cdecl; external libz name 'gzsetparams';
function gzread(thefile: gzFile; buf: pointer; len: cardinal): integer; cdecl; external libz name 'gzread';
function gzwrite(thefile: gzFile; buf: pointer; len: cardinal): integer; cdecl; external libz name 'gzwrite';
function gzprintf(thefile: gzFile; format: pbytef; args: array of const): integer; cdecl; external libz name 'gzprintf';
function gzputs(thefile: gzFile; s: pbytef): integer; cdecl; external libz name 'gzputs';
function gzgets(thefile: gzFile; buf: pbytef; len: integer): pchar; cdecl; external libz name 'gzgets';
function gzputc(thefile: gzFile; c: integer): integer; cdecl; external libz name 'gzputc';
function gzgetc(thefile: gzFile): integer; cdecl; external libz name 'gzgetc';
function gzflush(thefile: gzFile; flush: integer): integer; cdecl; external libz name 'gzflush';
function gzseek(thefile: gzFile; offset: z_off_t; whence: integer): z_off_t; cdecl; external libz name 'gzseek';
function gzrewind(thefile: gzFile): integer; cdecl; external libz name 'gzrewind';
function gztell(thefile: gzFile): z_off_t; cdecl; external libz name 'gztell';
function gzeof(thefile: gzFile): integer; cdecl; external libz name 'gzeof';
function gzclose(thefile: gzFile): integer; cdecl; external libz name 'gzclose';
function gzerror(thefile: gzFile; var errnum: integer): pchar; cdecl; external libz name 'gzerror';
function adler32(adler: uLong; buf: pbytef; len: uInt): uLong; cdecl; external libz name 'adler32';
function crc32(crc: uLong; buf: pbytef; len: uInt): uLong; cdecl; external libz name 'crc32';
function deflateInit_(var strm: TZStream; level: integer; version: pchar; stream_size: integer): integer; cdecl; external libz name 'deflateInit_';
function deflateInit(var strm: TZStream; level : integer) : integer;
function inflateInit_(var strm: TZStream; version: pchar; stream_size: integer): integer; cdecl; external libz name 'inflateInit_';
function inflateInit(var strm:TZStream) : integer;
function deflateInit2_(var strm: TZStream; level: integer; method: integer; windowBits: integer; memLevel: integer; strategy: integer; version: pchar; stream_size: integer): integer; cdecl; external libz name 'deflateInit2_';
function deflateInit2(var strm: TZStream; level, method, windowBits, memLevel, strategy: integer): integer;
function inflateInit2_(var strm: TZStream; windowBits: integer; version: pchar; stream_size: integer): integer; cdecl; external libz name 'inflateInit2_';
function inflateInit2(var strm: TZStream; windowBits: integer): integer;
function zErrorpchar(err: integer): pchar; cdecl; external libz name 'zError';
function zError(err: integer): string;
function inflateSyncPoint(z: PZstream): integer; cdecl; external libz name 'inflateSyncPoint';
function get_crc_table(): pointer; cdecl; external libz name 'get_crc_table';
function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
implementation
function zlibversion(): string;
begin
zlibversion := string(zlibversionpchar);
end;
function deflateInit(var strm: TZStream; level: integer) : integer;
begin
deflateInit := deflateInit_(strm, level, ZLIB_VERSION, sizeof(TZStream));
end;
function inflateInit(var strm: TZStream): integer;
begin
inflateInit := inflateInit_(strm, ZLIB_VERSION, sizeof(TZStream));
end;
function deflateInit2(var strm: TZStream; level, method, windowBits, memLevel, strategy: integer) : integer;
begin
deflateInit2 := deflateInit2_(strm, level, method, windowBits, memLevel, strategy, ZLIB_VERSION, sizeof(TZStream));
end;
function inflateInit2(var strm: TZStream; windowBits: integer): integer;
begin
inflateInit2 := inflateInit2_(strm, windowBits, ZLIB_VERSION, sizeof(TZStream));
end;
function zError(err: integer): string;
begin
zerror := string(zErrorpchar(err));
end;
function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
begin
Result := GetMemory(Items * Size);
end;
procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
begin
FreeMem(Block);
end;
end.
|
