#define SNAPPY_CHUNK_SIZE (1 * 1024 * 1024)
-#define SNAPPY_BYTE1 'a'
-#define SNAPPY_BYTE2 't'
using namespace trace;
protected:
virtual bool rawOpen(const std::string &filename, File::Mode mode);
virtual bool rawWrite(const void *buffer, size_t length);
- virtual bool rawRead(void *buffer, size_t length);
+ virtual size_t rawRead(void *buffer, size_t length);
virtual int rawGetc();
virtual void rawClose();
virtual void rawFlush();
return true;
}
-bool SnappyFile::rawRead(void *buffer, size_t length)
+size_t SnappyFile::rawRead(void *buffer, size_t length)
{
if (endOfData()) {
- return false;
+ return 0;
}
if (freeCacheSize() >= length) {
flushReadCache();
}
if (!m_cacheSize) {
- break;
+ return length - sizeToRead;
}
}
}
- return true;
+ return length;
}
int SnappyFile::rawGetc()
{
- int c = 0;
- if (!rawRead(&c, 1))
+ unsigned char c = 0;
+ if (rawRead(&c, 1) != 1)
return -1;
return c;
}
int SnappyFile::rawPercentRead()
{
- return 100 * (double(m_stream.tellg()) / double(m_endPos));
+ return int(100 * (double(m_stream.tellg()) / double(m_endPos)));
}
File* File::createSnappy(void) {
return new SnappyFile;
}
-
-bool File::isSnappyCompressed(const std::string &filename)
-{
- std::fstream stream(filename.c_str(),
- std::fstream::binary | std::fstream::in);
- if (!stream.is_open())
- return false;
-
- unsigned char byte1, byte2;
- stream >> byte1;
- stream >> byte2;
- stream.close();
-
- return (byte1 == SNAPPY_BYTE1 && byte2 == SNAPPY_BYTE2);
-}