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| author | David Barr <david.barr@cordelta.com> | 2010-10-10 03:30:15 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-10-13 22:10:31 (GMT) |
| commit | 2794ad524462c4e2ecd4573d650e7b4f8da89a5d (patch) | |
| tree | fdc7ec72b3ccd22b51a0b88a8cf4f9186a6aca45 /t | |
| parent | d0af3734f14410e9c297aa08bf46fdb153a25ccb (diff) | |
| download | git-2794ad524462c4e2ecd4573d650e7b4f8da89a5d.zip git-2794ad524462c4e2ecd4573d650e7b4f8da89a5d.tar.gz git-2794ad524462c4e2ecd4573d650e7b4f8da89a5d.tar.bz2 | |
fast-import: Allow filemodify to set the root
v1.7.3-rc0~75^2 (Teach fast-import to import subtrees named by tree id,
2010-06-30) has a shortcoming - it doesn't allow the root to be set.
Extend this behaviour by allowing the root to be referenced as the
empty path, "".
For a command (like filter-branch --subdirectory-filter) that wants
to commit a lot of trees that already exist in the object db, writing
undeltified objects as loose files only to repack them later can
involve a significant amount of overhead.
(23% slow-down observed on Linux 2.6.35, worse on Mac OS X 10.6)
Fortunately we have fast-import (which is one of the only git commands
that will write to a pack directly) but there is not an advertised way
to tell fast-import to commit a given tree without unpacking it.
This patch changes that, by allowing
M 040000 <tree id> ""
as a filemodify line in a commit to reset to a particular tree without
any need to parse it. For example,
M 040000 4b825dc642cb6eb9a060e54bf8d69288fbee4904 ""
is a synonym for the deleteall command and the fast-import equivalent of
git read-tree 4b825dc642cb6eb9a060e54bf8d69288fbee4904
Signed-off-by: David Barr <david.barr@cordelta.com>
Commit-message-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Sverre Rabbelier <srabbelier@gmail.com>
Tested-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't')
| -rwxr-xr-x | t/t9300-fast-import.sh | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/t/t9300-fast-import.sh b/t/t9300-fast-import.sh index 7c05920..3c0cf05 100755 --- a/t/t9300-fast-import.sh +++ b/t/t9300-fast-import.sh @@ -875,6 +875,27 @@ test_expect_success \ compare_diff_raw expect actual' test_expect_success \ + 'N: copy root directory by tree hash' \ + 'cat >expect <<-\EOF && + :100755 000000 f1fb5da718392694d0076d677d6d0e364c79b0bc 0000000000000000000000000000000000000000 D file3/newf + :100644 000000 7123f7f44e39be127c5eb701e5968176ee9d78b1 0000000000000000000000000000000000000000 D file3/oldf + EOF + root=$(git rev-parse refs/heads/branch^0^{tree}) && + cat >input <<-INPUT_END && + commit refs/heads/N6 + committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE + data <<COMMIT + copy root directory by tree hash + COMMIT + + from refs/heads/branch^0 + M 040000 $root "" + INPUT_END + git fast-import <input && + git diff-tree -C --find-copies-harder -r N4 N6 >actual && + compare_diff_raw expect actual' + +test_expect_success \ 'N: modify copied tree' \ 'cat >expect <<-\EOF && :100644 100644 fcf778cda181eaa1cbc9e9ce3a2e15ee9f9fe791 fcf778cda181eaa1cbc9e9ce3a2e15ee9f9fe791 C100 newdir/interesting file3/file5 |