1308
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"
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COPYRIGHT (c) 2002 by eXept Software AG
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3916
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All Rights Reserved
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1308
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5 |
This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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11 |
"
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4259
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"{ Package: 'stx:libbasic2' }"
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1308
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4259
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"{ NameSpace: Smalltalk }"
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1059
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1196
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CompressionStream subclass:#BZip2Stream
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1193
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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4259
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category:'Streams-Compressed'
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1059
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!
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1196
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!BZip2Stream primitiveDefinitions!
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1059
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%{
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/*
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* includes, defines, structure definitions
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* and typedefs come here.
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*/
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1838
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#include <stdio.h>
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3915
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#ifdef WIN32
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// sigh - bzlib.h includes windows.h, which does not like ST/X definitions
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3916
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# undef Process
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# undef Processor
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# undef Context
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38 |
# undef Array
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39 |
# undef Date
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40 |
# undef Method
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41 |
# undef Delay
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42 |
# undef Character
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43 |
# undef String
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44 |
# undef Time
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# undef Signal
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46 |
# undef Set
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# undef Message
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# undef Rectangle
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# undef Block
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# undef Object
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51 |
# undef Point
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52 |
# undef INT
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53 |
# undef UINT
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# define NO_STDIO
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# if defined(__i386__) || defined(__x86__)
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# define _X86_
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# endif
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3915
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#endif
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1838
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#include "bzlib.h"
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1059
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3915
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#ifdef WIN32
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3916
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# define INT STX_INT
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# define UINT STX_UINT
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65 |
# ifdef STX_Process
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# define Process STX_Process
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# endif
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68 |
# ifdef STX_Processor
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# define Processor STX_Processor
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|
70 |
# endif
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|
71 |
# ifdef STX_Context
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72 |
# define Context STX_Context
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# endif
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|
74 |
# ifdef STX_Array
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|
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# define Array STX_Array
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|
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# endif
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77 |
# ifdef STX_Date
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# define Date STX_Date
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# endif
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# ifdef STX_Method
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# define Method STX_Method
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# endif
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# ifdef STX_Delay
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|
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# define Delay STX_Delay
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|
85 |
# endif
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# ifdef STX_Character
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|
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# define Character STX_Character
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|
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# endif
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# ifdef STX_String
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# define String STX_String
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|
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# endif
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|
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# ifdef STX_Time
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|
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# define Time STX_Time
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|
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# endif
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|
95 |
# ifdef STX_Signal
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|
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# define Signal STX_Signal
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|
97 |
# endif
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|
98 |
# ifdef STX_Set
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# define Set STX_Set
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|
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# endif
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# ifdef STX_Message
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# define Message STX_Message
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|
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# endif
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# ifdef STX_Rectangle
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# define Rectangle STX_Rectangle
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|
106 |
# endif
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|
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# ifdef STX_Block
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|
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# define Block STX_Block
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|
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# endif
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# ifdef STX_Object
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# define Object STX_Object
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# endif
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# ifdef STX_Point
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# define Point STXPoint
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# endif
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#endif
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typedef enum {
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e_opmode_unspecified /* processing done */
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, e_opmode_deflate /* running deflate */
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, e_opmode_inflate /* running inflate */
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} e_opmode;
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typedef struct {
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1195
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bz_stream stream; /* pointer to the external in -stream */
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char * in_ref; /* size of the external in -stream */
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char * out_ref; /* pointer to the external out-stream */
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unsigned int out_total; /* size of the external out-stream */
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1195
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e_opmode op_mode; /* current operational mode */
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} zstream_s;
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|
133 |
%}
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! !
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1308
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!BZip2Stream class methodsFor:'documentation'!
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copyright
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139 |
"
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140 |
COPYRIGHT (c) 2002 by eXept Software AG
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3916
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All Rights Reserved
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1308
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142 |
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143 |
This software is furnished under a license and may be used
|
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144 |
only in accordance with the terms of that license and with the
|
|
145 |
inclusion of the above copyright notice. This software may not
|
|
146 |
be provided or otherwise made available to, or used by, any
|
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other person. No title to or ownership of the software is
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hereby transferred.
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149 |
"
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! !
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1193
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151 |
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1196
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152 |
!BZip2Stream methodsFor:'low level'!
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zclose
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"low level close of the zip stream
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"
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%{
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OBJ _zstreamObj = __INST( zstream );
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if( _zstreamObj != nil )
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{
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1195
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zstream_s * _zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
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1195
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__INST(zstream) = nil;
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1195
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if( _zstream->stream.state != NULL )
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{
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if( _zstream->op_mode == e_opmode_inflate )
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BZ2_bzDecompressEnd( & _zstream->stream );
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else
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BZ2_bzCompressEnd( & _zstream->stream );
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172 |
}
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free( _zstream );
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}
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%}.
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!
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zdeflate
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"low level - deflate"
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180 |
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|errorNo|
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errorNo := nil.
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183 |
%{
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OBJ _zstreamObj = __INST( zstream );
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186 |
if( _zstreamObj != nil )
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{
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3916
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int _errorNo, _action;
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189 |
unsigned int _bfsize;
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190 |
zstream_s * _zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
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1059
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3916
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192 |
if( _zstream->op_mode != e_opmode_deflate )
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RETURN( nil );
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1059
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3916
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_bfsize = _zstream->out_total;
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3916
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if( _zstream->stream.state == NULL )
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{
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199 |
_zstream->op_mode = e_opmode_unspecified;
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200 |
RETURN( nil );
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201 |
}
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_action = (__INST(hitEOF) == true) ? BZ_FINISH : BZ_RUN;
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3916
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_zstream->stream.avail_out = _bfsize;
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_zstream->stream.next_out = _zstream->out_ref;
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206 |
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207 |
_errorNo = BZ2_bzCompress( & _zstream->stream, _action );
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208 |
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3916
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209 |
if( _errorNo == BZ_STREAM_END )
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210 |
{
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211 |
_zstream->stream.avail_in = 0;
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212 |
_zstream->stream.next_in = NULL;
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213 |
_errorNo = BZ2_bzCompressEnd( & _zstream->stream );
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|
214 |
}
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1059
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215 |
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3916
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216 |
if( (_errorNo == BZ_OK)
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|
217 |
|| (_errorNo == BZ_RUN_OK)
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|
218 |
|| (_errorNo == BZ_FINISH_OK)
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219 |
)
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220 |
{
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221 |
if( (_zstream->stream.avail_out != _bfsize)
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222 |
|| (_zstream->stream.avail_in != 0)
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)
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224 |
RETURN( true );
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1059
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3916
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RETURN( false );
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227 |
}
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228 |
errorNo = __MKSMALLINT( _errorNo );
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1059
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229 |
}
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230 |
%}.
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4054
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errorNo isNil ifTrue:[
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zstream isNil ifTrue:[self errorNotOpen].
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3916
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self invalidArgument.
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1059
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].
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235 |
self zerror:errorNo.
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236 |
!
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237 |
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238 |
zdeflateInit
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1570
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"low level - open for reading"
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240 |
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1059
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|errorNo blockSize100k workFactor|
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242 |
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243 |
errorNo := nil.
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|
244 |
blockSize100k := BlockSize.
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|
245 |
workFactor := 30.
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|
246 |
%{
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|
247 |
OBJ _zstreamObj = __INST( zstream );
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|
248 |
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|
249 |
if( (_zstreamObj != nil) && __bothSmallInteger(blockSize100k, workFactor) )
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|
250 |
{
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3916
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251 |
int _errorNo;
|
|
252 |
zstream_s * _zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
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1059
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253 |
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3916
|
254 |
_zstream->op_mode = e_opmode_deflate;
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1059
|
255 |
|
3916
|
256 |
_errorNo = BZ2_bzCompressInit( & _zstream->stream
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|
257 |
, __intVal( blockSize100k ), 0, __intVal( workFactor ) );
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1059
|
258 |
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3916
|
259 |
if( _errorNo == BZ_OK )
|
|
260 |
RETURN( self );
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1059
|
261 |
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3916
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262 |
errorNo = __MKSMALLINT( _errorNo );
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1059
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263 |
}
|
|
264 |
%}.
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4054
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265 |
errorNo isNil ifTrue:[
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|
266 |
zstream isNil ifTrue:[ self errorNotOpen ].
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3916
|
267 |
self invalidArgument.
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1059
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268 |
].
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269 |
self zerror:errorNo.
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|
270 |
!
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|
271 |
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|
272 |
zget_avail_out
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|
273 |
"low level - get the number of available out bytes
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|
274 |
"
|
|
275 |
%{
|
|
276 |
OBJ _zstreamObj = __INST( zstream );
|
|
277 |
|
|
278 |
if( _zstreamObj != nil )
|
|
279 |
{
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1195
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280 |
unsigned int _count;
|
|
281 |
zstream_s * _zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
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1059
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282 |
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1195
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283 |
_count = _zstream->out_total - _zstream->stream.avail_out;
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1059
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284 |
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1195
|
285 |
RETURN( __MKSMALLINT (_count) );
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1059
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286 |
}
|
|
287 |
%}.
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|
288 |
self errorNotOpen.
|
|
289 |
!
|
|
290 |
|
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291 |
zinflate
|
|
292 |
"low level - inflate
|
|
293 |
"
|
|
294 |
|errorNo|
|
|
295 |
|
|
296 |
errorNo := nil.
|
|
297 |
%{
|
|
298 |
OBJ _zstreamObj = __INST( zstream );
|
|
299 |
|
|
300 |
if( _zstreamObj != nil )
|
|
301 |
{
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1195
|
302 |
int _errorNo, _count;
|
|
303 |
zstream_s * _zstream;
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1059
|
304 |
|
1195
|
305 |
_zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
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1059
|
306 |
|
1195
|
307 |
if( _zstream->op_mode != e_opmode_inflate )
|
|
308 |
RETURN( nil );
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1059
|
309 |
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1195
|
310 |
if( _zstream->stream.state == NULL )
|
|
311 |
{
|
|
312 |
_zstream->op_mode = e_opmode_unspecified;
|
|
313 |
RETURN( nil );
|
|
314 |
}
|
|
315 |
if( _zstream->stream.avail_in == 0 )
|
|
316 |
RETURN( __MKSMALLINT (0) );
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1059
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317 |
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1195
|
318 |
_zstream->stream.avail_out = _zstream->out_total;
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|
319 |
_zstream->stream.next_out = _zstream->out_ref;
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1059
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320 |
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1195
|
321 |
_errorNo = BZ2_bzDecompress( & _zstream->stream );
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1059
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322 |
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1195
|
323 |
if( _errorNo == BZ_STREAM_END )
|
|
324 |
_errorNo = BZ2_bzDecompressEnd( & _zstream->stream );
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1059
|
325 |
|
1195
|
326 |
if( _errorNo == BZ_OK )
|
|
327 |
{
|
|
328 |
_count = _zstream->out_total - _zstream->stream.avail_out;
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1059
|
329 |
|
1195
|
330 |
RETURN( __MKSMALLINT (_count) );
|
|
331 |
}
|
|
332 |
errorNo = __MKSMALLINT( _errorNo );
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1059
|
333 |
}
|
|
334 |
%}.
|
4054
|
335 |
errorNo isNil ifTrue:[ self errorNotOpen ].
|
1059
|
336 |
self zerror:errorNo.
|
|
337 |
!
|
|
338 |
|
|
339 |
zinflateInit
|
|
340 |
"low level - inflateInit
|
|
341 |
"
|
|
342 |
|errorNo|
|
|
343 |
|
|
344 |
errorNo := nil.
|
|
345 |
|
|
346 |
%{
|
|
347 |
OBJ _zstreamObj = __INST( zstream );
|
|
348 |
|
|
349 |
if( _zstreamObj != nil )
|
|
350 |
{
|
1195
|
351 |
int _errorNo;
|
|
352 |
zstream_s * _zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
|
1059
|
353 |
|
1195
|
354 |
_zstream->op_mode = e_opmode_inflate;
|
|
355 |
_errorNo = BZ2_bzDecompressInit( & _zstream->stream, 0, 1 );
|
1059
|
356 |
|
1195
|
357 |
if( _errorNo == BZ_OK )
|
|
358 |
RETURN( self );
|
1059
|
359 |
|
1195
|
360 |
_zstream->stream.avail_in = 0;
|
|
361 |
errorNo = __MKSMALLINT( _errorNo );
|
1059
|
362 |
}
|
|
363 |
%}.
|
4054
|
364 |
errorNo isNil ifTrue:[ self errorNotOpen ].
|
1059
|
365 |
self zerror:errorNo.
|
|
366 |
!
|
|
367 |
|
|
368 |
zopen
|
|
369 |
"low level - opens the zip stream
|
|
370 |
"
|
|
371 |
|outTotal|
|
|
372 |
|
|
373 |
outTotal := outputBytes size.
|
|
374 |
%{
|
1750
|
375 |
extern void *malloc();
|
1564
|
376 |
|
1059
|
377 |
zstream_s * _zstream = (zstream_s *) malloc( sizeof(zstream_s) );
|
|
378 |
|
|
379 |
if( _zstream )
|
|
380 |
{
|
1195
|
381 |
OBJ _zobj = __MKEXTERNALADDRESS( _zstream );
|
|
382 |
OBJ _outObj = __INST( outputBytes );
|
|
383 |
OBJ _inpObj = __INST( inputBytes );
|
1059
|
384 |
|
1195
|
385 |
_zstream->in_ref = (char *) __externalBytesAddress( _inpObj );
|
|
386 |
_zstream->stream.next_in = NULL;
|
|
387 |
_zstream->stream.avail_in = 0;
|
|
388 |
_zstream->stream.total_in_lo32 = 0;
|
|
389 |
_zstream->stream.total_in_hi32 = 0;
|
1059
|
390 |
|
1195
|
391 |
_zstream->out_total = __intVal( outTotal );
|
|
392 |
_zstream->out_ref = (char *) __externalBytesAddress( _outObj );
|
|
393 |
_zstream->stream.next_out = _zstream->out_ref;
|
|
394 |
_zstream->stream.avail_out = _zstream->out_total;
|
1059
|
395 |
|
1195
|
396 |
_zstream->stream.total_out_lo32 = 0;
|
|
397 |
_zstream->stream.total_out_hi32 = 0;
|
1059
|
398 |
|
1195
|
399 |
_zstream->stream.bzalloc = 0;
|
|
400 |
_zstream->stream.bzfree = 0;
|
|
401 |
_zstream->stream.opaque = 0;
|
1059
|
402 |
|
1195
|
403 |
_zstream->op_mode = e_opmode_unspecified;
|
1059
|
404 |
|
1195
|
405 |
__INST (zstream) = _zobj;
|
|
406 |
__STORE(self, _zobj);
|
1059
|
407 |
}
|
|
408 |
%}.
|
|
409 |
!
|
|
410 |
|
|
411 |
zset_avail_in:count
|
1570
|
412 |
"set the 'avail_in'"
|
1059
|
413 |
%{
|
|
414 |
OBJ _zstreamObj = __INST( zstream );
|
|
415 |
|
|
416 |
if( (_zstreamObj != nil) && __isSmallInteger(count) )
|
|
417 |
{
|
3916
|
418 |
int _count;
|
|
419 |
zstream_s * _zstream = (zstream_s *) __externalBytesAddress( _zstreamObj );
|
1059
|
420 |
|
3916
|
421 |
if( (_count = __intVal( count )) > 0 )
|
|
422 |
{
|
|
423 |
char * _in_ref = _zstream->in_ref;
|
1059
|
424 |
|
3916
|
425 |
_zstream->stream.avail_in = _count;
|
|
426 |
_zstream->stream.next_in = _in_ref;
|
|
427 |
} else {
|
|
428 |
_zstream->stream.avail_in = 0;
|
|
429 |
_zstream->stream.next_in = NULL;
|
|
430 |
}
|
|
431 |
RETURN( self );
|
1059
|
432 |
}
|
|
433 |
%}.
|
4054
|
434 |
zstream isNil ifTrue:[ self errorNotOpen ].
|
1570
|
435 |
self invalidArgument.
|
1059
|
436 |
! !
|
|
437 |
|
1196
|
438 |
!BZip2Stream class methodsFor:'documentation'!
|
1193
|
439 |
|
|
440 |
version
|
3915
|
441 |
^ '$Header$'
|
1193
|
442 |
! !
|
4259
|
443 |
|