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ZLibExApi.pas
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ZLibExApi.pas
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{*************************************************************************************************
* ZLibExApi.pas *
* *
* copyright (c) 2000-2013 base2 technologies *
* copyright (c) 1995-2002 Borland Software Corporation *
* *
* revision history *
* 2013.05.23 updated to zlib version 1.2.8 *
* 2012.05.21 updated for win64 (delphi xe2) *
* moved win32 obj files to win32 subfolder *
* changed win32 obj options to exclude the underscore *
* 2012.05.07 updated to zlib version 1.2.7 *
* 2012.03.05 udpated to zlib version 1.2.6 *
* 2010.04.20 updated to zlib version 1.2.5 *
* 2010.04.15 updated to zlib version 1.2.4 *
* 2005.07.25 updated to zlib version 1.2.3 *
* 2005.01.11 updated to zlib version 1.2.2 *
* 2004.01.06 updated to zlib version 1.2.1 *
* 2002.03.15 updated to zlib version 1.1.4 *
* *
* acknowledgments *
* burak kalayci *
* 2002.03.15 informing me about the zlib 1.1.4 update *
* 2004.01.06 informing me about the zlib 1.2.1 update *
* *
* vicente sanchez-alarcos *
* 2005.01.11 informing me about the zlib 1.2.2 update *
* *
* mathijs van veluw *
* 2005.07.25 informing me about the zlib 1.2.3 update *
* *
* tommi prami *
* 2012.03.05 informing me about the zlib 1.2.6 update *
* *
* marian pascalau *
* 2012.05.21 providing the win64 obj files and your win64 modifications *
* *
* roman ganz *
* 2013.05.23 informing me about the zlib 1.2.8 update *
*************************************************************************************************}
unit ZLibExApi;
interface
{$I ZLibEx.inc}
const
{** version ids *******************************************************************************}
ZLIB_VERSION: PAnsiChar = '1.2.8';
ZLIB_VERNUM = $1280;
ZLIB_VER_MAJOR = 1;
ZLIB_VER_MINOR = 2;
ZLIB_VER_REVISION = 8;
ZLIB_VER_SUBREVISION = 0;
{** compression methods ***********************************************************************}
Z_DEFLATED = 8;
{** information flags *************************************************************************}
Z_INFO_FLAG_SIZE = $1;
Z_INFO_FLAG_CRC = $2;
Z_INFO_FLAG_ADLER = $4;
Z_INFO_NONE = 0;
Z_INFO_DEFAULT = Z_INFO_FLAG_SIZE or Z_INFO_FLAG_CRC;
{** flush constants ***************************************************************************}
Z_NO_FLUSH = 0;
Z_PARTIAL_FLUSH = 1;
Z_SYNC_FLUSH = 2;
Z_FULL_FLUSH = 3;
Z_FINISH = 4;
Z_BLOCK = 5;
Z_TREES = 6;
{** return codes ******************************************************************************}
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);
{** compression levels ************************************************************************}
Z_NO_COMPRESSION = 0;
Z_BEST_SPEED = 1;
Z_BEST_COMPRESSION = 9;
Z_DEFAULT_COMPRESSION = (-1);
{** compression strategies ********************************************************************}
Z_FILTERED = 1;
Z_HUFFMAN_ONLY = 2;
Z_RLE = 3;
Z_FIXED = 4;
Z_DEFAULT_STRATEGY = 0;
{** data types ********************************************************************************}
Z_BINARY = 0;
Z_TEXT = 1;
Z_ASCII = Z_TEXT;
Z_UNKNOWN = 2;
{** return code messages **********************************************************************}
z_errmsg: Array [0..9] of String = (
'Need dictionary', // Z_NEED_DICT (2)
'Stream end', // Z_STREAM_END (1)
'OK', // 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)
''
);
type
TZAlloc = function (opaque: Pointer; items, size: Integer): Pointer; cdecl;
TZFree = procedure (opaque, block: Pointer); cdecl;
{** TZStreamRec *******************************************************************************}
TZStreamRec = packed record
next_in : PByte; // next input byte
avail_in : Cardinal; // number of bytes available at next_in
total_in : Longword; // total nb of input bytes read so far
next_out : PByte; // next output byte should be put here
avail_out: Cardinal; // remaining free space at next_out
total_out: Longword; // total nb of bytes output so far
msg : PAnsiChar; // last error message, NULL if no error
state : Pointer; // not visible by applications
zalloc : TZAlloc; // used to allocate the internal state
zfree : TZFree; // used to free the internal state
opaque : Pointer; // private data object passed to zalloc and zfree
data_type: Integer; // best guess about the data type: ascii or binary
adler : Longword; // adler32 value of the uncompressed data
reserved : Longword; // reserved for future use
end;
{** macros **************************************************************************************}
function deflateInit(var strm: TZStreamRec; level: Integer): Integer;
{$ifdef Version2005Plus} inline; {$endif}
function deflateInit2(var strm: TZStreamRec; level, method, windowBits,
memLevel, strategy: Integer): Integer;
{$ifdef Version2005Plus} inline; {$endif}
function inflateInit(var strm: TZStreamRec): Integer;
{$ifdef Version2005Plus} inline; {$endif}
function inflateInit2(var strm: TZStreamRec; windowBits: Integer): Integer;
{$ifdef Version2005Plus} inline; {$endif}
{** external routines ***************************************************************************}
function deflateInit_(var strm: TZStreamRec; level: Integer;
version: PAnsiChar; recsize: Integer): Integer;
function deflateInit2_(var strm: TZStreamRec; level, method, windowBits,
memLevel, strategy: Integer; version: PAnsiChar; recsize: Integer): Integer;
function deflate(var strm: TZStreamRec; flush: Integer): Integer;
function deflateEnd(var strm: TZStreamRec): Integer;
function deflateReset(var strm: TZStreamRec): Integer;
function inflateInit_(var strm: TZStreamRec; version: PAnsiChar;
recsize: Integer): Integer;
function inflateInit2_(var strm: TZStreamRec; windowBits: Integer;
version: PAnsiChar; recsize: Integer): Integer;
function inflate(var strm: TZStreamRec; flush: Integer): Integer;
function inflateEnd(var strm: TZStreamRec): Integer;
function inflateReset(var strm: TZStreamRec): Integer;
function adler32(adler: Longint; const buf; len: Integer): Longint;
function crc32(crc: Longint; const buf; len: Integer): Longint;
implementation
{*************************************************************************************************
* link zlib code *
* *
* bcc32 flags *
* -c -O2 -Ve -X -pr -a8 -b -d -k- -vi -tWM -u- *
* *
* note: do not reorder the following -- doing so will result in external *
* functions being undefined *
*************************************************************************************************}
{$ifdef WIN64}
{$L win64\deflate.obj}
{$L win64\inflate.obj}
{$L win64\inftrees.obj}
{$L win64\infback.obj}
{$L win64\inffast.obj}
{$L win64\trees.obj}
{$L win64\compress.obj}
{$L win64\adler32.obj}
{$L win64\crc32.obj}
{$else}
{$L win32\deflate.obj}
{$L win32\inflate.obj}
{$L win32\inftrees.obj}
{$L win32\infback.obj}
{$L win32\inffast.obj}
{$L win32\trees.obj}
{$L win32\compress.obj}
{$L win32\adler32.obj}
{$L win32\crc32.obj}
{$endif}
{** macros **************************************************************************************}
function deflateInit(var strm: TZStreamRec; level: Integer): Integer;
begin
result := deflateInit_(strm, level, ZLIB_VERSION, SizeOf(TZStreamRec));
end;
function deflateInit2(var strm: TZStreamRec; level, method, windowBits,
memLevel, strategy: Integer): Integer;
begin
result := deflateInit2_(strm, level, method, windowBits,
memLevel, strategy, ZLIB_VERSION, SizeOf(TZStreamRec));
end;
function inflateInit(var strm: TZStreamRec): Integer;
begin
result := inflateInit_(strm, ZLIB_VERSION, SizeOf(TZStreamRec));
end;
function inflateInit2(var strm: TZStreamRec; windowBits: Integer): Integer;
begin
result := inflateInit2_(strm, windowBits, ZLIB_VERSION,
SizeOf(TZStreamRec));
end;
{** external routines ***************************************************************************}
function deflateInit_(var strm: TZStreamRec; level: Integer;
version: PAnsiChar; recsize: Integer): Integer;
external;
function deflateInit2_(var strm: TZStreamRec; level, method, windowBits,
memLevel, strategy: Integer; version: PAnsiChar; recsize: Integer): Integer;
external;
function deflate(var strm: TZStreamRec; flush: Integer): Integer;
external;
function deflateEnd(var strm: TZStreamRec): Integer;
external;
function deflateReset(var strm: TZStreamRec): Integer;
external;
function inflateInit_(var strm: TZStreamRec; version: PAnsiChar;
recsize: Integer): Integer;
external;
function inflateInit2_(var strm: TZStreamRec; windowBits: Integer;
version: PAnsiChar; recsize: Integer): Integer;
external;
function inflate(var strm: TZStreamRec; flush: Integer): Integer;
external;
function inflateEnd(var strm: TZStreamRec): Integer;
external;
function inflateReset(var strm: TZStreamRec): Integer;
external;
function adler32(adler: Longint; const buf; len: Integer): Longint;
external;
function crc32(crc: Longint; const buf; len: Integer): Longint;
external;
{** zlib function implementations ***************************************************************}
function zcalloc(opaque: Pointer; items, size: Integer): Pointer;
begin
GetMem(result,items * size);
end;
procedure zcfree(opaque, block: Pointer);
begin
FreeMem(block);
end;
{** c function implementations ******************************************************************}
function memset(p: Pointer; b: Byte; count: Integer): Pointer; cdecl;
begin
FillChar(p^, count, b);
result := p;
end;
procedure memcpy(dest, source: Pointer; count: Integer); cdecl;
begin
Move(source^, dest^, count);
end;
{$ifndef WIN64}
procedure _llmod;
asm
jmp System.@_llmod;
end;
{$endif}
end.