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Exception while using TStreamReader with TZipFile

The curse of Dennis D. Spreen – If you’re using the TStreamReader with a TZDecompressionStream – the stream output by TZipFile.Read(const FileName: string; out Stream: TStream; out LocalHeader: TZipHeader) – you’re likely to experience the exception: EZDecompressionError with the message 'Invalid ZStream operation!'. TZDecompressionStream allows only three seek methods: Read forward from beginning (Offset = 0) and (Origin = soBeginning) Read forward from current position (Offset >= 0) and (Origin = soCurrent) Read end (Offset = 0) and (Origin = soEnd) But TStreamReader adjusts the read buffer ...
Favorite? Off-Topic? Dennis @ 2014-05-13 13:03


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