return (byte1 == SNAPPY_BYTE1 && byte2 == SNAPPY_BYTE2);
}
+typedef struct gz_stream {
+ z_stream stream;
+ int z_err; /* error code for last stream operation */
+ int z_eof; /* set if end of input file */
+ FILE *file; /* .gz file */
+} gz_dummy_stream;
ZLibFile::ZLibFile(const std::string &filename,
File::Mode mode)
(mode == File::Write) ? "wb" : "rb");
if (mode == File::Read && m_gzFile) {
- m_endOffset = gzseek(m_gzFile, 0, SEEK_END);
- gzrewind(m_gzFile);
+ //XXX: unfortunately zlib doesn't support
+ // SEEK_END or we could've done:
+ //m_endOffset = gzseek(m_gzFile, 0, SEEK_END);
+ //gzrewind(m_gzFile);
+ gz_dummy_stream *stream = (gz_dummy_stream *)m_gzFile;
+ long loc = ftell(stream->file);
+ fseek(stream->file,0,SEEK_END);
+ m_endOffset = ftell(stream->file);
+ fseek(stream->file, loc, SEEK_SET);
}
return m_gzFile != NULL;
int ZLibFile::rawPercentRead()
{
- return 100 * (gztell(m_gzFile) / m_endOffset);
+ gz_dummy_stream *stream = (gz_dummy_stream *)m_gzFile;
+ return 100 * (ftell(stream->file) / m_endOffset);
}