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git-svn: bugfix and optimize the 'log' command

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Revisions with long commit messages were being skipped, since
the 'git-svn-id' metadata line was at the end and git-log uses a
32k buffer to print the commits.

Also the last 'git-svn-id' metadata line in a commit is always
the valid one, so make sure we use that, as well.

Made the verbose flag work by passing the correct option switch
('--summary') to git-log.

Finally, optimize -r/--revision argument handling by passing
the appropriate limits to revision

Signed-off-by: Eric Wong <normalperson@yhbt.net>
This commit is contained in:
Eric Wong 2006-06-15 18:48:22 -07:00
parent 968bdf1f3d
commit c0d4822268
1 changed files with 52 additions and 8 deletions
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60
contrib/git-svn/git-svn.perl
View file

@ -663,17 +663,15 @@ sub show_log {
my $pid = open(my $log,'-|');
defined $pid or croak $!;
if (!$pid) {
my @rl = (qw/git-log --abbrev-commit --pretty=raw
--default/, "remotes/$GIT_SVN");
push @rl, '--raw' if $_verbose;
exec(@rl, @args) or croak $!;
exec(git_svn_log_cmd($r_min,$r_max), @args) or croak $!;
}
setup_pager();
my (@k, $c, $d);
while (<$log>) {
if (/^commit ($sha1_short)/o) {
my $cmt = $1;
if ($c && defined $c->{r} && $c->{r} != $r_last) {
if ($c && cmt_showable($c) && $c->{r} != $r_last) {
$r_last = $c->{r};
process_commit($c, $r_min, $r_max, \@k) or
goto out;
@ -692,8 +690,7 @@ sub show_log {
} elsif ($d) {
push @{$c->{diff}}, $_;
} elsif (/^ (git-svn-id:.+)$/) {
my ($url, $rev, $uuid) = extract_metadata($1);
$c->{r} = $rev;
(undef, $c->{r}, undef) = extract_metadata($1);
} elsif (s/^ //) {
push @{$c->{l}}, $_;
}
@ -715,6 +712,52 @@ sub show_log {
########################### utility functions #########################
sub cmt_showable {
my ($c) = @_;
return 1 if defined $c->{r};
if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
$c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
shift @msg while ($msg[0] ne "\n");
shift @msg;
@{$c->{l}} = grep !/^git-svn-id: /, @msg;
(undef, $c->{r}, undef) = extract_metadata(
(grep(/^git-svn-id: /, @msg))[-1]);
}
return defined $c->{r};
}
sub git_svn_log_cmd {
my ($r_min, $r_max) = @_;
my @cmd = (qw/git-log --abbrev-commit --pretty=raw
--default/, "refs/remotes/$GIT_SVN");
push @cmd, '--summary' if $_verbose;
return @cmd unless defined $r_max;
if ($r_max == $r_min) {
push @cmd, '--max-count=1';
if (my $c = revdb_get($REVDB, $r_max)) {
push @cmd, $c;
}
} else {
my ($c_min, $c_max);
$c_max = revdb_get($REVDB, $r_max);
$c_min = revdb_get($REVDB, $r_min);
if ($c_min && $c_max) {
if ($r_max > $r_max) {
push @cmd, "$c_min..$c_max";
} else {
push @cmd, "$c_max..$c_min";
}
} elsif ($r_max > $r_min) {
push @cmd, $c_max;
} else {
push @cmd, $c_min;
}
}
return @cmd;
}
sub fetch_child_id {
my $id = shift;
print "Fetching $id\n";
@ -2206,6 +2249,7 @@ sub setup_pager { # translated to Perl from pager.c
sub get_author_info {
my ($dest, $author, $t, $tz) = @_;
$author =~ s/(?:^\s*|\s*$)//g;
$dest->{a_raw} = $author;
my $_a;
if ($_authors) {
$_a = $rusers{$author} || undef;
@ -2440,7 +2484,7 @@ sub svn_grab_base_rev {
close $fh;
if (defined $c && length $c) {
my ($url, $rev, $uuid) = extract_metadata((grep(/^git-svn-id: /,
safe_qx(qw/git-cat-file commit/, $c)))[0]);
safe_qx(qw/git-cat-file commit/, $c)))[-1]);
return ($rev, $c);
}
return (undef, undef);