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authorEric Wong <normalperson@yhbt.net>2007-09-01 01:16:12 (GMT)
committerJunio C Hamano <gitster@pobox.com>2007-09-01 06:22:51 (GMT)
commit751eb39590a1325e761a84bedd5ca2660d2d3497 (patch)
tree1c921eda3357d7c368685d491215e90a34085cc9
parenteeebd8d8c5ab63494abe200b30a840aa99ee7412 (diff)
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git-svn: fix dcommit clobbering upstream when committing multiple changes
Although dcommit could detect if the first commit in the series would conflict with the HEAD revision in SVN, it could not detect conflicts in further commits it made. Now we rebase each uncommitted change after each revision is committed to SVN to ensure that we are up-to-date. git-rebase will bail out on conflict errors if our next change cannot be applied and committed to SVN cleanly, preventing accidental clobbering of changes on the SVN-side. --no-rebase users will have trouble with this, and are thus warned if they are committing more than one commit. Fixing this for (hopefully uncommon) --no-rebase users would be more complex and will probably happen at a later date. Thanks to David Watson for finding this and the original test. Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rwxr-xr-xgit-svn.perl60
-rwxr-xr-xt/t9106-git-svn-commit-diff-clobber.sh30
2 files changed, 62 insertions, 28 deletions
diff --git a/git-svn.perl b/git-svn.perl
index 98218da..d3c8cd0 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -384,6 +384,12 @@ sub cmd_dcommit {
}
my $last_rev;
my ($linear_refs, $parents) = linearize_history($gs, \@refs);
+ if ($_no_rebase && scalar(@$linear_refs) > 1) {
+ warn "Attempting to commit more than one change while ",
+ "--no-rebase is enabled.\n",
+ "If these changes depend on each other, re-running ",
+ "without --no-rebase will be required."
+ }
foreach my $d (@$linear_refs) {
unless (defined $last_rev) {
(undef, $last_rev, undef) = cmt_metadata("$d~1");
@@ -395,6 +401,7 @@ sub cmd_dcommit {
if ($_dry_run) {
print "diff-tree $d~1 $d\n";
} else {
+ my $cmt_rev;
my %ed_opts = ( r => $last_rev,
log => get_commit_entry($d)->{log},
ra => Git::SVN::Ra->new($gs->full_url),
@@ -402,42 +409,39 @@ sub cmd_dcommit {
tree_b => $d,
editor_cb => sub {
print "Committed r$_[0]\n";
- $last_rev = $_[0]; },
+ $cmt_rev = $_[0];
+ },
svn_path => '');
if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
print "No changes\n$d~1 == $d\n";
} elsif ($parents->{$d} && @{$parents->{$d}}) {
- $gs->{inject_parents_dcommit}->{$last_rev} =
+ $gs->{inject_parents_dcommit}->{$cmt_rev} =
$parents->{$d};
}
+ $_fetch_all ? $gs->fetch_all : $gs->fetch;
+ next if $_no_rebase;
+
+ # we always want to rebase against the current HEAD,
+ # not any head that was passed to us
+ my @diff = command('diff-tree', 'HEAD',
+ $gs->refname, '--');
+ my @finish;
+ if (@diff) {
+ @finish = rebase_cmd();
+ print STDERR "W: HEAD and ", $gs->refname,
+ " differ, using @finish:\n",
+ "@diff";
+ } else {
+ print "No changes between current HEAD and ",
+ $gs->refname,
+ "\nResetting to the latest ",
+ $gs->refname, "\n";
+ @finish = qw/reset --mixed/;
+ }
+ command_noisy(@finish, $gs->refname);
+ $last_rev = $cmt_rev;
}
}
- return if $_dry_run;
- unless ($gs) {
- warn "Could not determine fetch information for $url\n",
- "Will not attempt to fetch and rebase commits.\n",
- "This probably means you have useSvmProps and should\n",
- "now resync your SVN::Mirror repository.\n";
- return;
- }
- $_fetch_all ? $gs->fetch_all : $gs->fetch;
- unless ($_no_rebase) {
- # we always want to rebase against the current HEAD, not any
- # head that was passed to us
- my @diff = command('diff-tree', 'HEAD', $gs->refname, '--');
- my @finish;
- if (@diff) {
- @finish = rebase_cmd();
- print STDERR "W: HEAD and ", $gs->refname, " differ, ",
- "using @finish:\n", "@diff";
- } else {
- print "No changes between current HEAD and ",
- $gs->refname, "\nResetting to the latest ",
- $gs->refname, "\n";
- @finish = qw/reset --mixed/;
- }
- command_noisy(@finish, $gs->refname);
- }
}
sub cmd_find_rev {
diff --git a/t/t9106-git-svn-commit-diff-clobber.sh b/t/t9106-git-svn-commit-diff-clobber.sh
index 6f132f2..79b7968 100755
--- a/t/t9106-git-svn-commit-diff-clobber.sh
+++ b/t/t9106-git-svn-commit-diff-clobber.sh
@@ -66,4 +66,34 @@ test_expect_success 'dcommit does the svn equivalent of an index merge' "
git-svn dcommit
"
+test_expect_success 'commit another change from svn side' "
+ svn co $svnrepo t.svn &&
+ cd t.svn &&
+ echo third line from svn >> file &&
+ poke file &&
+ svn commit -m 'third line from svn' &&
+ cd .. &&
+ rm -rf t.svn
+ "
+
+test_expect_failure 'multiple dcommit from git-svn will not clobber svn' "
+ git reset --hard refs/remotes/git-svn &&
+ echo new file >> new-file &&
+ git update-index --add new-file &&
+ git commit -a -m 'new file' &&
+ echo clobber > file &&
+ git commit -a -m 'clobber' &&
+ git svn dcommit
+ " || true
+
+
+test_expect_success 'check that rebase really failed' 'test -d .dotest'
+
+test_expect_success 'resolve, continue the rebase and dcommit' "
+ echo clobber and I really mean it > file &&
+ git update-index file &&
+ git rebase --continue &&
+ git svn dcommit
+ "
+
test_done