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-rw-r--r--src/stable/bzip2.cpp344
1 files changed, 172 insertions, 172 deletions
diff --git a/src/stable/bzip2.cpp b/src/stable/bzip2.cpp
index 11b8873..5e660d0 100644
--- a/src/stable/bzip2.cpp
+++ b/src/stable/bzip2.cpp
@@ -15,222 +15,222 @@
15using namespace Bu; 15using namespace Bu;
16 16
17Bu::BZip2::BZip2( Bu::Stream &rNext, int nCompression ) : 17Bu::BZip2::BZip2( Bu::Stream &rNext, int nCompression ) :
18 Bu::Filter( rNext ), 18 Bu::Filter( rNext ),
19 prState( NULL ), 19 prState( NULL ),
20 nCompression( nCompression ), 20 nCompression( nCompression ),
21 sTotalOut( 0 ) 21 sTotalOut( 0 )
22{ 22{
23 TRACE( nCompression ); 23 TRACE( nCompression );
24 start(); 24 start();
25} 25}
26 26
27Bu::BZip2::~BZip2() 27Bu::BZip2::~BZip2()
28{ 28{
29 TRACE(); 29 TRACE();
30 stop(); 30 stop();
31} 31}
32 32
33void Bu::BZip2::start() 33void Bu::BZip2::start()
34{ 34{
35 TRACE(); 35 TRACE();
36 36
37 prState = new bz_stream; 37 prState = new bz_stream;
38 pState->state = NULL; 38 pState->state = NULL;
39 pState->bzalloc = NULL; 39 pState->bzalloc = NULL;
40 pState->bzfree = NULL; 40 pState->bzfree = NULL;
41 pState->opaque = NULL; 41 pState->opaque = NULL;
42 42
43 nBufSize = 64*1024; 43 nBufSize = 64*1024;
44 pBuf = new char[nBufSize]; 44 pBuf = new char[nBufSize];
45} 45}
46 46
47Bu::size Bu::BZip2::stop() 47Bu::size Bu::BZip2::stop()
48{ 48{
49 TRACE(); 49 TRACE();
50 if( !pState ) 50 if( !pState )
51 return 0; 51 return 0;
52 52
53 if( pState->state ) 53 if( pState->state )
54 { 54 {
55 if( bReading ) 55 if( bReading )
56 { 56 {
57 BZ2_bzDecompressEnd( pState ); 57 BZ2_bzDecompressEnd( pState );
58 delete[] pBuf; 58 delete[] pBuf;
59 pBuf = NULL; 59 pBuf = NULL;
60 delete pState; 60 delete pState;
61 prState = NULL; 61 prState = NULL;
62 return 0; 62 return 0;
63 } 63 }
64 else 64 else
65 { 65 {
66// Bu::size sTotal = 0; 66// Bu::size sTotal = 0;
67 for(;;) 67 for(;;)
68 { 68 {
69 pState->next_in = NULL; 69 pState->next_in = NULL;
70 pState->avail_in = 0; 70 pState->avail_in = 0;
71 pState->avail_out = nBufSize; 71 pState->avail_out = nBufSize;
72 pState->next_out = pBuf; 72 pState->next_out = pBuf;
73 int res = BZ2_bzCompress( pState, BZ_FINISH ); 73 int res = BZ2_bzCompress( pState, BZ_FINISH );
74 if( pState->avail_out < nBufSize ) 74 if( pState->avail_out < nBufSize )
75 { 75 {
76 sTotalOut += rNext.write( pBuf, nBufSize-pState->avail_out ); 76 sTotalOut += rNext.write( pBuf, nBufSize-pState->avail_out );
77 } 77 }
78 if( res == BZ_STREAM_END ) 78 if( res == BZ_STREAM_END )
79 break; 79 break;
80 } 80 }
81 BZ2_bzCompressEnd( pState ); 81 BZ2_bzCompressEnd( pState );
82 delete[] pBuf; 82 delete[] pBuf;
83 pBuf = NULL; 83 pBuf = NULL;
84 delete pState; 84 delete pState;
85 prState = NULL; 85 prState = NULL;
86 return sTotalOut; 86 return sTotalOut;
87 } 87 }
88 } 88 }
89 return 0; 89 return 0;
90} 90}
91 91
92void Bu::BZip2::bzError( int code ) 92void Bu::BZip2::bzError( int code )
93{ 93{
94 TRACE( code ); 94 TRACE( code );
95 switch( code ) 95 switch( code )
96 { 96 {
97 case BZ_OK: 97 case BZ_OK:
98 case BZ_RUN_OK: 98 case BZ_RUN_OK:
99 case BZ_FLUSH_OK: 99 case BZ_FLUSH_OK:
100 case BZ_FINISH_OK: 100 case BZ_FINISH_OK:
101 return; 101 return;
102 102
103 case BZ_CONFIG_ERROR: 103 case BZ_CONFIG_ERROR:
104 throw ExceptionBase("BZip2: Library configured improperly, reinstall."); 104 throw ExceptionBase("BZip2: Library configured improperly, reinstall.");
105 105
106 case BZ_SEQUENCE_ERROR: 106 case BZ_SEQUENCE_ERROR:
107 throw ExceptionBase("BZip2: Functions were called in an invalid sequence."); 107 throw ExceptionBase("BZip2: Functions were called in an invalid sequence.");
108 108
109 case BZ_PARAM_ERROR: 109 case BZ_PARAM_ERROR:
110 throw ExceptionBase("BZip2: Invalid parameter was passed into a function."); 110 throw ExceptionBase("BZip2: Invalid parameter was passed into a function.");
111 111
112 case BZ_MEM_ERROR: 112 case BZ_MEM_ERROR:
113 throw ExceptionBase("BZip2: Couldn't allocate sufficient memory."); 113 throw ExceptionBase("BZip2: Couldn't allocate sufficient memory.");
114 114
115 case BZ_DATA_ERROR: 115 case BZ_DATA_ERROR:
116 throw ExceptionBase("BZip2: Data was corrupted before decompression."); 116 throw ExceptionBase("BZip2: Data was corrupted before decompression.");
117 117
118 case BZ_DATA_ERROR_MAGIC: 118 case BZ_DATA_ERROR_MAGIC:
119 throw ExceptionBase("BZip2: Stream does not appear to be bzip2 data."); 119 throw ExceptionBase("BZip2: Stream does not appear to be bzip2 data.");
120 120
121 case BZ_IO_ERROR: 121 case BZ_IO_ERROR:
122 throw ExceptionBase("BZip2: File couldn't be read from / written to."); 122 throw ExceptionBase("BZip2: File couldn't be read from / written to.");
123 123
124 case BZ_UNEXPECTED_EOF: 124 case BZ_UNEXPECTED_EOF:
125 throw ExceptionBase("BZip2: End of file encountered before end of stream."); 125 throw ExceptionBase("BZip2: End of file encountered before end of stream.");
126 126
127 case BZ_OUTBUFF_FULL: 127 case BZ_OUTBUFF_FULL:
128 throw ExceptionBase("BZip2: Buffer not large enough to accomidate data."); 128 throw ExceptionBase("BZip2: Buffer not large enough to accomidate data.");
129 129
130 default: 130 default:
131 throw ExceptionBase("BZip2: Unknown error encountered."); 131 throw ExceptionBase("BZip2: Unknown error encountered.");
132 132
133 } 133 }
134} 134}
135 135
136Bu::size Bu::BZip2::read( void *pData, Bu::size nBytes ) 136Bu::size Bu::BZip2::read( void *pData, Bu::size nBytes )
137{ 137{
138 TRACE( pData, nBytes ); 138 TRACE( pData, nBytes );
139 if( !pState->state ) 139 if( !pState->state )
140 { 140 {
141 bReading = true; 141 bReading = true;
142 BZ2_bzDecompressInit( pState, 0, 0 ); 142 BZ2_bzDecompressInit( pState, 0, 0 );
143 pState->next_in = pBuf; 143 pState->next_in = pBuf;
144 pState->avail_in = 0; 144 pState->avail_in = 0;
145 } 145 }
146 if( bReading == false ) 146 if( bReading == false )
147 throw ExceptionBase("This bzip2 filter is in writing mode, you can't read."); 147 throw ExceptionBase("This bzip2 filter is in writing mode, you can't read.");
148 148
149 int nRead = 0; 149 int nRead = 0;
150 int nReadTotal = pState->total_out_lo32; 150 int nReadTotal = pState->total_out_lo32;
151 pState->next_out = (char *)pData; 151 pState->next_out = (char *)pData;
152 pState->avail_out = nBytes; 152 pState->avail_out = nBytes;
153 for(;;) 153 for(;;)
154 { 154 {
155 int ret = BZ2_bzDecompress( pState ); 155 int ret = BZ2_bzDecompress( pState );
156 156
157 nReadTotal += nRead-pState->avail_out; 157 nReadTotal += nRead-pState->avail_out;
158 158
159 if( ret == BZ_STREAM_END ) 159 if( ret == BZ_STREAM_END )
160 { 160 {
161 if( pState->avail_in > 0 ) 161 if( pState->avail_in > 0 )
162 { 162 {
163 if( rNext.isSeekable() ) 163 if( rNext.isSeekable() )
164 { 164 {
165 rNext.seek( -(Bu::size)pState->avail_in ); 165 rNext.seek( -(Bu::size)pState->avail_in );
166 } 166 }
167 } 167 }
168 return nBytes-pState->avail_out; 168 return nBytes-pState->avail_out;
169 } 169 }
170 bzError( ret ); 170 bzError( ret );
171 171
172 if( pState->avail_out ) 172 if( pState->avail_out )
173 { 173 {
174 if( pState->avail_in == 0 ) 174 if( pState->avail_in == 0 )
175 { 175 {
176 nRead = rNext.read( pBuf, nBufSize ); 176 nRead = rNext.read( pBuf, nBufSize );
177 if( nRead == 0 && rNext.isEos() ) 177 if( nRead == 0 && rNext.isEos() )
178 { 178 {
179 throw Bu::ExceptionBase("Premature end of underlying " 179 throw Bu::ExceptionBase("Premature end of underlying "
180 "stream found reading bzip2 stream."); 180 "stream found reading bzip2 stream.");
181 } 181 }
182 pState->next_in = pBuf; 182 pState->next_in = pBuf;
183 pState->avail_in = nRead; 183 pState->avail_in = nRead;
184 } 184 }
185 } 185 }
186 else 186 else
187 { 187 {
188 return nBytes-pState->avail_out; 188 return nBytes-pState->avail_out;
189 } 189 }
190 } 190 }
191 return 0; 191 return 0;
192} 192}
193 193
194Bu::size Bu::BZip2::write( const void *pData, Bu::size nBytes ) 194Bu::size Bu::BZip2::write( const void *pData, Bu::size nBytes )
195{ 195{
196 TRACE( pData, nBytes ); 196 TRACE( pData, nBytes );
197 if( !pState->state ) 197 if( !pState->state )
198 { 198 {
199 bReading = false; 199 bReading = false;
200 BZ2_bzCompressInit( pState, nCompression, 0, 30 ); 200 BZ2_bzCompressInit( pState, nCompression, 0, 30 );
201 } 201 }
202 if( bReading == true ) 202 if( bReading == true )
203 throw ExceptionBase("This bzip2 filter is in reading mode, you can't write."); 203 throw ExceptionBase("This bzip2 filter is in reading mode, you can't write.");
204 204
205// Bu::size sTotalOut = 0; 205// Bu::size sTotalOut = 0;
206 pState->next_in = (char *)pData; 206 pState->next_in = (char *)pData;
207 pState->avail_in = nBytes; 207 pState->avail_in = nBytes;
208 for(;;) 208 for(;;)
209 { 209 {
210 pState->avail_out = nBufSize; 210 pState->avail_out = nBufSize;
211 pState->next_out = pBuf; 211 pState->next_out = pBuf;
212 212
213 bzError( BZ2_bzCompress( pState, BZ_RUN ) ); 213 bzError( BZ2_bzCompress( pState, BZ_RUN ) );
214 214
215 if( pState->avail_out < nBufSize ) 215 if( pState->avail_out < nBufSize )
216 { 216 {
217 sTotalOut += rNext.write( pBuf, nBufSize-pState->avail_out ); 217 sTotalOut += rNext.write( pBuf, nBufSize-pState->avail_out );
218 } 218 }
219 if( pState->avail_in == 0 ) 219 if( pState->avail_in == 0 )
220 break; 220 break;
221 } 221 }
222 222
223 return nBytes; 223 return nBytes;
224} 224}
225 225
226bool Bu::BZip2::isOpen() 226bool Bu::BZip2::isOpen()
227{ 227{
228 TRACE(); 228 TRACE();
229 return (pState->state != NULL); 229 return (pState->state != NULL);
230} 230}
231 231
232Bu::size Bu::BZip2::getCompressedSize() 232Bu::size Bu::BZip2::getCompressedSize()
233{ 233{
234 return sTotalOut; 234 return sTotalOut;
235} 235}
236 236
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