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Adding upstream version 1.5.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-17 22:16:00 +01:00
parent 25083e3fd1
commit f71ad10fd3
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
11 changed files with 91 additions and 91 deletions
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29
README
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@ -5,20 +5,6 @@ small size makes it well suited for embedded devices or software
installers that need to decompress files but do not need compression
capabilities. Lunzip is fully compatible with lzip-1.4 or newer.
If the size of the output buffer is specified with the "--buffer-size"
option, lunzip uses the decompressed file as dictionary for distances
beyond the buffer size and is able to decompress any file using as
little memory as 50 kB, irrespective of the dictionary size used to
compress the file. Of course, the smaller the output buffer size used in
relation to the dictionary size, the more accesses to disk are needed
and the slower the decompression is. This "low memory" mode only works
when decompressing to a regular file and is intended for systems without
enough memory (RAM + swap) to keep the whole dictionary at once.
The amount of memory required by lunzip to decompress a file is about
46 kB larger than the dictionary size used to compress that file, unless
the "--buffer-size" option is specified.
The lzip file format is designed for long-term data archiving. It is
clean, provides very safe 4 factor integrity checking, and is backed by
the recovery capabilities of lziprecover.
@ -28,6 +14,21 @@ bzip2, which makes it safer than decompressors returning ambiguous
warning values (like gunzip) when it is used as a back end for tar or
zutils.
Lunzip provides a "low memory" mode able to decompress any file using as
little memory as 50 kB, irrespective of the dictionary size used to
compress the file. To activate it, specify the size of the output buffer
with the "--buffer-size" option and lunzip will use the decompressed
file as dictionary for distances beyond the buffer size. Of course, the
smaller the output buffer size used in relation to the dictionary size,
the more accesses to disk are needed and the slower the decompression
is. This "low memory" mode only works when decompressing to a regular
file and is intended for systems without enough memory (RAM + swap) to
keep the whole dictionary at once.
The amount of memory required by lunzip to decompress a file is about
46 kB larger than the dictionary size used to compress that file, unless
the "--buffer-size" option is specified.
Lunzip attempts to guess the name for the decompressed file from that of
the compressed file as follows: