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authorGravatar Denys Vlasenko <vda.linux@googlemail.com>2015-10-22 01:07:13 +0200
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2015-10-22 01:07:13 +0200
commit6c563e370d0f2f3cf36f3b274e8fe1392ca7125f (patch)
tree8e9a7cd2e979bc6c956b863128086a342dd1a676 /archival/tar.c
parentc47917865d5f40f9044dd8845814c591d801318d (diff)
downloadbusybox-6c563e370d0f2f3cf36f3b274e8fe1392ca7125f.tar.gz
busybox-6c563e370d0f2f3cf36f3b274e8fe1392ca7125f.tar.bz2
tar: add support for --strip-components=N
function old new delta data_extract_all 882 995 +113 tar_longopts 290 309 +19 tar_main 938 942 +4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 136/0) Total: 136 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/tar.c')
-rw-r--r--archival/tar.c80
1 files changed, 66 insertions, 14 deletions
diff --git a/archival/tar.c b/archival/tar.c
index aa03ba990..566ba34f6 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -152,9 +152,12 @@
# define FNM_LEADING_DIR 0
#endif
-
-//#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
-#define DBG(...) ((void)0)
+#if 0
+# define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
+#else
+# define DBG(...) ((void)0)
+#endif
+#define DBG_OPTION_PARSING 0
#define block_buf bb_common_bufsiz1
@@ -855,6 +858,7 @@ enum {
IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ OPTBIT_STRIP_COMPONENTS,
OPTBIT_NORECURSION,
IF_FEATURE_TAR_TO_COMMAND(OPTBIT_2COMMAND ,)
OPTBIT_NUMERIC_OWNER,
@@ -879,12 +883,13 @@ enum {
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
- OPT_2COMMAND = IF_FEATURE_TAR_TO_COMMAND( (1 << OPTBIT_2COMMAND )) + 0, // to-command
- OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
- 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_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
+ OPT_STRIP_COMPONENTS = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_STRIP_COMPONENTS)) + 0, // strip-components
+ OPT_NORECURSION = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NORECURSION )) + 0, // no-recursion
+ OPT_2COMMAND = IF_FEATURE_TAR_TO_COMMAND( (1 << OPTBIT_2COMMAND )) + 0, // to-command
+ OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
+ 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_XZ | OPT_COMPRESS),
};
@@ -928,6 +933,7 @@ static const char tar_longopts[] ALIGN1 =
# if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
"touch\0" No_argument "m"
# endif
+ "strip-components\0" Required_argument "\xf9"
"no-recursion\0" No_argument "\xfa"
# if ENABLE_FEATURE_TAR_TO_COMMAND
"to-command\0" Required_argument "\xfb"
@@ -973,11 +979,15 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
"tt:vv:" // count -t,-v
IF_FEATURE_TAR_FROM("X::T::") // cumulative lists
#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
- "\xff::" // cumulative lists for --exclude
+ "\xff::" // --exclude=PATTERN is a list
#endif
IF_FEATURE_TAR_CREATE("c:") "t:x:" // at least one of these is reqd
IF_FEATURE_TAR_CREATE("c--tx:t--cx:x--ct") // mutually exclusive
- IF_NOT_FEATURE_TAR_CREATE("t--x:x--t"); // mutually exclusive
+ IF_NOT_FEATURE_TAR_CREATE("t--x:x--t") // mutually exclusive
+#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ ":\xf9+" // --strip-components=NUM
+#endif
+ ;
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
applet_long_options = tar_longopts;
#endif
@@ -1018,10 +1028,14 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
IF_FEATURE_SEAMLESS_XZ( "J" )
IF_FEATURE_SEAMLESS_Z( "Z" )
IF_FEATURE_TAR_NOPRESERVE_TIME("m")
+ IF_FEATURE_TAR_LONG_OPTIONS("\xf9:") // --strip-components
, &base_dir // -C dir
, &tar_filename // -f filename
IF_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T
IF_FEATURE_TAR_FROM(, &(tar_handle->reject)) // X
+#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ , &tar_handle->tar__strip_components // --strip-components
+#endif
IF_FEATURE_TAR_TO_COMMAND(, &(tar_handle->tar__to_command)) // --to-command
#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
, &excludes // --exclude
@@ -1029,11 +1043,49 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
, &verboseFlag // combined count for -t and -v
, &verboseFlag // combined count for -t and -v
);
- //bb_error_msg("opt:%08x", opt);
+#if DBG_OPTION_PARSING
+ bb_error_msg("opt: 0x%08x", opt);
+# define showopt(o) bb_error_msg("opt & %s(%x): %x", #o, o, opt & o);
+ showopt(OPT_TEST );
+ showopt(OPT_EXTRACT );
+ showopt(OPT_BASEDIR );
+ showopt(OPT_TARNAME );
+ showopt(OPT_2STDOUT );
+ showopt(OPT_NOPRESERVE_OWNER);
+ showopt(OPT_P );
+ showopt(OPT_VERBOSE );
+ showopt(OPT_KEEP_OLD );
+ showopt(OPT_CREATE );
+ showopt(OPT_DEREFERENCE );
+ showopt(OPT_BZIP2 );
+ showopt(OPT_LZMA );
+ showopt(OPT_INCLUDE_FROM );
+ showopt(OPT_EXCLUDE_FROM );
+ showopt(OPT_GZIP );
+ showopt(OPT_XZ );
+ showopt(OPT_COMPRESS );
+ showopt(OPT_NOPRESERVE_TIME );
+ showopt(OPT_STRIP_COMPONENTS);
+ showopt(OPT_NORECURSION );
+ showopt(OPT_2COMMAND );
+ showopt(OPT_NUMERIC_OWNER );
+ showopt(OPT_NOPRESERVE_PERM );
+ showopt(OPT_OVERWRITE );
+ showopt(OPT_ANY_COMPRESS );
+ bb_error_msg("base_dir:'%s'", base_dir);
+ bb_error_msg("tar_filename:'%s'", tar_filename);
+ bb_error_msg("verboseFlag:%d", verboseFlag);
+ bb_error_msg("tar_handle->tar__to_command:'%s'", tar_handle->tar__to_command);
+ bb_error_msg("tar_handle->tar__strip_components:%u", tar_handle->tar__strip_components);
+ return 0;
+# undef showopt
+#endif
argv += optind;
- if (verboseFlag) tar_handle->action_header = header_verbose_list;
- if (verboseFlag == 1) tar_handle->action_header = header_list;
+ if (verboseFlag)
+ tar_handle->action_header = header_verbose_list;
+ if (verboseFlag == 1)
+ tar_handle->action_header = header_list;
if (opt & OPT_EXTRACT)
tar_handle->action_data = data_extract_all;