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git-svn: add the 'dcommit' command

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This is a high-level wrapper around the 'commit-diff' command
and used to produce cleaner history against the mirrored repository
through rebase/reset usage.

It's basically a more polished version of this:

for i in `git rev-list --no-merges remotes/git-svn..HEAD | tac`; do
	git-svn commit-diff $i~1 $i
done
git reset --hard remotes/git-svn

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Eric Wong
2006-08-26 00:01:23 -07:00
committed by Junio C Hamano
parent 2e93115ed8
commit b22d449721
2 changed files with 61 additions and 1 deletions
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35
git-svn.perl
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@ -51,7 +51,8 @@ my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
$_message, $_file, $_follow_parent, $_no_metadata,
$_template, $_shared, $_no_default_regex, $_no_graft_copy,
$_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
$_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m);
$_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
$_merge, $_strategy, $_dry_run);
my (@_branch_from, %tree_map, %users, %rusers, %equiv);
my ($_svn_co_url_revs, $_svn_pg_peg_revs);
my @repo_path_split_cache;
@ -118,6 +119,11 @@ my %cmd = (
{ 'message|m=s' => \$_message,
'file|F=s' => \$_file,
%cmt_opts } ],
dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
{ 'merge|m|M' => \$_merge,
'strategy|s=s' => \$_strategy,
'dry-run|n' => \$_dry_run,
%cmt_opts } ],
);
my $cmd;
@ -561,6 +567,33 @@ sub commit_lib {
unlink $commit_msg;
}
sub dcommit {
my $gs = "refs/remotes/$GIT_SVN";
chomp(my @refs = safe_qx(qw/git-rev-list --no-merges/, "$gs..HEAD"));
foreach my $d (reverse @refs) {
if ($_dry_run) {
print "diff-tree $d~1 $d\n";
} else {
commit_diff("$d~1", $d);
}
}
return if $_dry_run;
fetch();
my @diff = safe_qx(qw/git-diff-tree HEAD/, $gs);
my @finish;
if (@diff) {
@finish = qw/rebase/;
push @finish, qw/--merge/ if $_merge;
push @finish, "--strategy=$_strategy" if $_strategy;
print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
} else {
print "No changes between current HEAD and $gs\n",
"Hard resetting to the latest $gs\n";
@finish = qw/reset --hard/;
}
sys('git', @finish, $gs);
}
sub show_ignore {
$SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
$_use_lib ? show_ignore_lib() : show_ignore_cmd();