squashfs-tools-ng.git/lib/fstream/uncompress, branch v1.1.1

Fix: allow concatenated xz streams

2021-05-06T11:27:46+00:00

Some xz compressed tarballs (e.g. from kernel.org) are not made up of a single xz stream, but rather contain several, independendly compressed streams. In that case, the xz decompressor hits an LZMA_STREAM_END early on and reports EOF. If you are lucky, the tar reader bails (premature end-of-file). If you are unlucky, it happens exactely between two records and is interpeted as regular end-of-file. As this seems to be a normal use case for xz, it has a flag to just read across the seams and only report end-of-stream if the action is set to finish. This commit adds the flag to the initialization propperly sets the lzma_action depending on whether the underlying stream hit EOF or not. Signed-off-by: David Oberhollenzer

Add a check whether libzstd supports stream compression

2020-09-17T11:10:25+00:00

Streaming compression was added fairly recently to zstd (and then the API was changed a few times). Rather than rely on libzstd versioning macros, this commit adds an m4 script to test at configure time if the enums/functions we need are available by trying to compile a small sample. Signed-off-by: David Oberhollenzer

Add bzip2 stream compression support

2020-09-16T07:34:35+00:00

Signed-off-by: David Oberhollenzer

Add zstd stream compressor implementation to libfstream

2020-09-16T07:34:35+00:00

Signed-off-by: David Oberhollenzer

Implement istream decompression support

2020-09-16T07:34:35+00:00

Signed-off-by: David Oberhollenzer