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COMMON: Update GZipWriteStream::pos()

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Though it seemed the _wrapped stream should return valid position, it
was always 0. That's why I've added a _pos field, which is updated in
write() and returned in pos().
This commit is contained in:
Alexander Tkachev 2016-08-04 15:14:06 +06:00
parent 7a89caac84
commit f58abd9540
1 changed files with 4 additions and 2 deletions
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6
common/zlib.cpp
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@ -316,6 +316,7 @@ protected:
ScopedPtr<WriteStream> _wrapped;
z_stream _stream;
int _zlibErr;
uint32 _pos;
void processData(int flushType) {
// This function is called by both write() and finalize().
@ -333,7 +334,7 @@ protected:
}
public:
GZipWriteStream(WriteStream *w) : _wrapped(w), _stream() {
GZipWriteStream(WriteStream *w) : _wrapped(w), _stream(), _pos(0) {
assert(w != 0);
// Adding 16 to windowBits indicates to zlib that it is supposed to
@ -403,10 +404,11 @@ public:
// ... and flush it to disk
processData(Z_NO_FLUSH);
_pos += dataSize - _stream.avail_in;
return dataSize - _stream.avail_in;
}
virtual int32 pos() const { return _wrapped->pos(); }
virtual int32 pos() const { return _pos; }
};
#endif // USE_ZLIB