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# Description
#
# This patch adds `-a' and a long option equivalent `--lzma'
# to GNU tar 1.18.
#
# Changes
#
# 2007-08-10 - Updated the patch to work with GNU tar 1.18.
#
# 2007-08-10 - Use `-a' instead of of `-Y'. BusyBox already uses `-a'
# and that conflicts less with other tar implementations
# than `-Y'.
#
# 2006-08-16 - Updated magic byte detection for the new .lzma format.
#
# 2005-12-23 - Updated to use the new lzma command line tool which
# replaced the ugly lzmash wrapper script.
#
# 2005-05-06 - Initial version using lzmash wrapper script
#
# Copyright information
#
# GNU tar is copyright by Free Software Foundation, Inc.
# This patch was written by Lasse Collin <lasse.collin@tukaani.org>.
#
# GNU tar is distributed under the GNU GPL. However, the author of
# this patch puts the changes made by him into the public domain.
diff -ru tar-1.18.orig/src/buffer.c tar-1.18/src/buffer.c
--- tar-1.18.orig/src/buffer.c 2007-06-27 16:30:31.000000000 +0300
+++ tar-1.18/src/buffer.c 2007-08-10 23:03:33.430394635 +0300
@@ -205,7 +205,8 @@
ct_none,
ct_compress,
ct_gzip,
- ct_bzip2
+ ct_bzip2,
+ ct_lzma
};
struct zip_magic
@@ -222,6 +223,7 @@
{ ct_compress, 2, "\037\235", "compress", "-Z" },
{ ct_gzip, 2, "\037\213", "gzip", "-z" },
{ ct_bzip2, 3, "BZh", "bzip2", "-j" },
+ { ct_lzma, 6, "\xFFLZMA", "lzma", "-a" },
};
#define NMAGIC (sizeof(magic)/sizeof(magic[0]))
diff -ru tar-1.18.orig/src/tar.c tar-1.18/src/tar.c
--- tar-1.18.orig/src/tar.c 2007-06-27 16:30:32.000000000 +0300
+++ tar-1.18/src/tar.c 2007-08-10 23:03:33.430394635 +0300
@@ -574,6 +574,8 @@
N_("control pax keywords"), GRID+8 },
{"label", 'V', N_("TEXT"), 0,
N_("create archive with volume name TEXT; at list/extract time, use TEXT as a globbing pattern for volume name"), GRID+8 },
+ {"lzma", 'a', 0, 0,
+ N_("filter the archive through lzma"), GRID+8 },
{"bzip2", 'j', 0, 0,
N_("filter the archive through bzip2"), GRID+8 },
{"gzip", 'z', 0, 0,
@@ -1184,6 +1186,10 @@
args->input_files = true;
break;
+ case 'a':
+ set_use_compress_program_option ("lzma");
+ break;
+
case 'A':
set_subcommand_option (CAT_SUBCOMMAND);
break;
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