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tar: add support for --strip-components=N

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function                                             old     new   delta
data_extract_all                                     882     995    +113
tar_longopts                                         290     309     +19
tar_main                                             938     942      +4
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(add/remove: 0/0 grow/shrink: 3/0 up/down: 136/0)             Total: 136 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2015-10-22 01:07:13 +02:00
parent c47917865d
commit 6c563e370d
5 changed files with 156 additions and 46 deletions
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10
testsuite/tar.tests
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@@ -53,6 +53,15 @@ dd if=/dev/zero bs=512 count=20 2>/dev/null | tar xvf - 2>&1; echo $?
"" ""
SKIP=
# "tar cf test.tar input input_dir/ input_hard1 input_hard2 input_hard1 input_dir/ input":
# GNU tar 1.26 records as hardlinks:
# input_hard2 -> input_hard1
# input_hard1 -> input_hard1 (!!!)
# input_dir/file -> input_dir/file
# input -> input
# As of 1.24.0, we don't record last two: for them, nlink==1
# and we check for "hardlink"ness only files with nlink!=1
# We also don't use "hrw-r--r--" notation for hardlinks in "tar tv" listing.
optional FEATURE_TAR_CREATE FEATURE_LS_SORTFILES
testing "tar hardlinks and repeated files" '\
rm -rf input_* test.tar 2>/dev/null
@@ -64,6 +73,7 @@ chmod -R 644 *
chmod 755 input_dir
tar cf test.tar input input_dir/ input_hard1 input_hard2 input_hard1 input_dir/ input
tar tvf test.tar | sed "s/.*[0-9] input/input/"
rm -rf input_dir
tar xf test.tar 2>&1
echo Ok: $?
ls -l . input_dir/* | grep input_ | sed "s/\\(^[^ ]*\\) .* input/\\1 input/"