Zip members stored with method 12 are decoded with rbzip2, whole, from
the mapping, from what the stream lends or else read, as Zstandard
members are. A .bz2 file stands for the file named as it is without the
extension: a stream does not say how long it decodes to, so the member
is decoded when it is listed, its size and CRC then known, and kept for
the extraction that follows. "#" after ".bz2" names its member.
HAVE_RBZIP2, on unless configured off, builds both and the decoder;
RVZ's bzip2 groups take the decoder alone where it is off.
file_archive_whole() is the whole-file read the .zst and .bz2 backends
share.
archive_bz2_test lists, reads and extracts bzip2 zip members and a .bz2
file, and refuses members whose CRC is wrong.
LibretroAdmin
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