Opened 5 years ago
Last modified 5 years ago
#13075 new Bugs
gzip_decompressor cannot be pushed to filtering_stream if provided with input_seekable
| Reported by: | hellohee | Owned by: | Jonathan Turkanis |
|---|---|---|---|
| Milestone: | To Be Determined | Component: | iostreams |
| Version: | Boost 1.63.0 | Severity: | Problem |
| Keywords: | gzip, seekable | Cc: |
Description
There is a ticket regarding making filtering stream seekable: https://svn.boost.org/trac/boost/ticket/2449 However, the solution doesn't apply to situations where gzip decompressor is pushed.
boost::iostreams::filtering_stream<boost::iostreams::input_seekable> instream; boost::iostreams::file_source file(filename, std::ios_base::in | std::ios_base::binary); instream.push(boost::iostreams::gzip_decompressor()); -> fails HERE instream.push(file);
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Maybe I misunderstand, but that is correct behaviour. Seeking in compressed streams is not possible in a reasonable way, so you should not be able to push a decompressor if you need the input to be seekable.