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tar: support -J, --xz explicit compression option

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function                                             old     new   delta
tar_main                                             868     881     +13
tar_longopts                                         285     290      +5
packed_usage                                       29267   29270      +3

Signed-off-by: Boris Reisig <boris@boris.ca>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Boris Reisig 2012-05-24 09:01:55 +02:00 committed by Denys Vlasenko
parent 6e9284db78
commit dfc2473b9e
1 changed files with 15 additions and 2 deletions
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17
archival/tar.c
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@ -693,6 +693,7 @@ static llist_t *append_file_list_to_list(llist_t *list)
//usage: "-[" IF_FEATURE_TAR_CREATE("c") "xt"
//usage: IF_FEATURE_SEAMLESS_Z("Z")
//usage: IF_FEATURE_SEAMLESS_GZ("z")
//usage: IF_FEATURE_SEAMLESS_XZ("J")
//usage: IF_FEATURE_SEAMLESS_BZ2("j")
//usage: IF_FEATURE_SEAMLESS_LZMA("a")
//usage: IF_FEATURE_TAR_CREATE("h")
@ -719,6 +720,9 @@ static llist_t *append_file_list_to_list(llist_t *list)
//usage: IF_FEATURE_SEAMLESS_GZ(
//usage: "\n z (De)compress using gzip"
//usage: )
//usage: IF_FEATURE_SEAMLESS_XZ(
//usage: "\n J (De)compress using xz"
//usage: )
//usage: IF_FEATURE_SEAMLESS_BZ2(
//usage: "\n j (De)compress using bzip2"
//usage: )
@ -765,7 +769,8 @@ enum {
IF_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,)
IF_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
IF_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,)
IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,) // 16th bit
IF_FEATURE_SEAMLESS_XZ( OPTBIT_XZ ,) // 16th bit
IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
OPTBIT_NORECURSION,
@ -790,6 +795,7 @@ enum {
OPT_INCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_INCLUDE_FROM)) + 0, // T
OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
OPT_XZ = IF_FEATURE_SEAMLESS_XZ( (1 << OPTBIT_XZ )) + 0, // J
OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
OPT_NORECURSION = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NORECURSION )) + 0, // no-recursion
@ -798,7 +804,7 @@ enum {
OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
OPT_OVERWRITE = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE )) + 0, // overwrite
OPT_ANY_COMPRESS = (OPT_BZIP2 | OPT_LZMA | OPT_GZIP | OPT_COMPRESS),
OPT_ANY_COMPRESS = (OPT_BZIP2 | OPT_LZMA | OPT_GZIP | OPT_XZ | OPT_COMPRESS),
};
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
static const char tar_longopts[] ALIGN1 =
@ -831,6 +837,9 @@ static const char tar_longopts[] ALIGN1 =
# if ENABLE_FEATURE_SEAMLESS_GZ
"gzip\0" No_argument "z"
# endif
# if ENABLE_FEATURE_SEAMLESS_XZ
"xz\0" No_argument "J"
# endif
# if ENABLE_FEATURE_SEAMLESS_Z
"compress\0" No_argument "Z"
# endif
@ -924,6 +933,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
IF_FEATURE_SEAMLESS_LZMA("a" )
IF_FEATURE_TAR_FROM( "T:X:")
IF_FEATURE_SEAMLESS_GZ( "z" )
IF_FEATURE_SEAMLESS_XZ( "J" )
IF_FEATURE_SEAMLESS_Z( "Z" )
IF_FEATURE_TAR_NOPRESERVE_TIME("m")
, &base_dir // -C dir
@ -1076,6 +1086,9 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
if (opt & OPT_LZMA)
USE_FOR_MMU(xformer = unpack_lzma_stream;)
USE_FOR_NOMMU(xformer_prog = "unlzma";)
if (opt & OPT_XZ)
USE_FOR_MMU(xformer = unpack_xz_stream;)
USE_FOR_NOMMU(xformer_prog = "unxz";)
open_transformer_with_sig(tar_handle->src_fd, xformer, xformer_prog);
/* Can't lseek over pipes */