diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/source/zcodec/zcodec.cxx | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/source/zcodec/zcodec.cxx b/tools/source/zcodec/zcodec.cxx index d6bce145a188..b5c645ac92e2 100644 --- a/tools/source/zcodec/zcodec.cxx +++ b/tools/source/zcodec/zcodec.cxx @@ -394,4 +394,30 @@ void ZCodec::UpdateCRC ( sal_uInt8* pSource, long nDatSize) mnCRC = rtl_crc32( mnCRC, pSource, nDatSize ); } +bool ZCodec::AttemptDecompression(SvStream& rIStm, SvStream& rOStm, bool updateCrc, bool gzLib) +{ + assert(meState == STATE_INIT); + sal_uLong nStreamPos = rIStm.Tell(); + BeginCompression(ZCODEC_DEFAULT_COMPRESSION, updateCrc, gzLib); + InitDecompress(rIStm); + EndCompression(); + if ( !mbStatus || rIStm.GetError() ) + { + rIStm.Seek(nStreamPos); + return false; + } + rIStm.Seek(nStreamPos); + BeginCompression(ZCODEC_DEFAULT_COMPRESSION, updateCrc, gzLib); + Decompress(rIStm, rOStm); + EndCompression(); + if( !mbStatus || rIStm.GetError() || rOStm.GetError() ) + { + rIStm.Seek(nStreamPos); + return false; + } + rIStm.Seek(nStreamPos); + rOStm.Seek(0); + return true; +} + /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |