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Add Lzip support

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* configure.ac: Add TAR_COMPR_PROGRAM(lzip)
* doc/tar.texi: Reflect lzip support.
* src/buffer.c (compress_type) <ct_lzip>: New constant.
(magic): Add magic for lzip.
* src/suffix.c (compression_suffixes): Add lz.
* src/tar.c: New option --lzip.
This commit is contained in:
Antonio Diaz Diaz
2010-03-02 18:41:41 +02:00
committed by Sergey Poznyakoff
parent 9a3e8a6f43
commit bffe1074aa
5 changed files with 32 additions and 5 deletions
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23
doc/tar.texi
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@@ -2820,6 +2820,12 @@ backup, using @var{snapshot-file} to determine which files to backup.
With other operations, informs @command{tar} that the archive is in
incremental format. @xref{Incremental Dumps}.
@opsummary{lzip}
@item --lzip
This option tells @command{tar} to read or write archives through
@command{lzip}. @xref{gzip}.
@opsummary{lzma}
@item --lzma
@@ -8628,21 +8634,23 @@ switch to @samp{posix}.
@cindex gzip
@cindex bzip2
@cindex lzip
@cindex lzma
@cindex lzop
@cindex compress
@GNUTAR{} is able to create and read compressed archives. It supports
@command{gzip}, @command{bzip2}, @command{lzma} and @command{lzop} compression
programs. For backward compatibility, it also supports
@command{compress} command, although we strongly recommend against
using it, because it is by far less effective than other compression
programs@footnote{It also had patent problems in the past.}.
@command{gzip}, @command{bzip2}, @command{lzip}, @command{lzma} and
@command{lzop} compression programs. For backward compatibility, it
also supports @command{compress} command, although we strongly recommend
against using it, because it is by far less effective than other
compression programs@footnote{It also had patent problems in the past.}.
Creating a compressed archive is simple: you just specify a
@dfn{compression option} along with the usual archive creation
commands. The compression option is @option{-z} (@option{--gzip}) to
create a @command{gzip} compressed archive, @option{-j}
(@option{--bzip2}) to create a @command{bzip2} compressed archive,
@option{--lzip} to create an @asis{lzip} compressed archive,
@option{-J} (@option{--xz}) to create an @asis{XZ} archive,
@option{--lzma} to create an @asis{LZMA} compressed
archive, @option{--lzop} to create an @asis{LSOP} archive, and
@@ -8739,6 +8747,7 @@ suffix. The following suffixes are recognized:
@item @samp{.tz2} @tab @command{bzip2}
@item @samp{.tbz2} @tab @command{bzip2}
@item @samp{.tbz} @tab @command{bzip2}
@item @samp{.lz} @tab @command{lzip}
@item @samp{.lzma} @tab @command{lzma}
@item @samp{.tlz} @tab @command{lzma}
@item @samp{.lzo} @tab @command{lzop}
@@ -8796,6 +8805,10 @@ Filter the archive through @code{xz}. Otherwise like
@itemx --bzip2
Filter the archive through @code{bzip2}. Otherwise like @option{--gzip}.
@opindex lzip
@item --lzip
Filter the archive through @command{lzip}. Otherwise like @option{--gzip}.
@opindex lzma
@item --lzma
Filter the archive through @command{lzma}. Otherwise like @option{--gzip}.