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git svn: make empty directory creation gc-aware 

The "git svn gc" command creates and appends to unhandled.log.gz
files which should be parsed before the uncompressed
unhandled.log files.

Reported-by: Robert Zeh
Signed-off-by: Eric Wong <normalperson@yhbt.net>
maint
Eric Wong 2009-12-19 13:49:00 -08:00
parent 94058a90cf
commit a5b80d9263
2 changed files with 59 additions and 12 deletions
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47
git-svn.perl
View File

@ -2740,21 +2740,44 @@ sub do_fetch {

sub mkemptydirs {
my ($self, $r) = @_;
my %empty_dirs = ();

open my $fh, '<', "$self->{dir}/unhandled.log" or return;
binmode $fh or croak "binmode: $!";
while (<$fh>) {
if (defined $r && /^r(\d+)$/) {
last if $1 > $r;
} elsif (/^ \+empty_dir: (.+)$/) {
$empty_dirs{$1} = 1;
} elsif (/^ \-empty_dir: (.+)$/) {
my @d = grep {m[^\Q$1\E(/|$)]} (keys %empty_dirs);
delete @empty_dirs{@d};
sub scan {
my ($r, $empty_dirs, $line) = @_;
if (defined $r && $line =~ /^r(\d+)$/) {
return 0 if $1 > $r;
} elsif ($line =~ /^ \+empty_dir: (.+)$/) {
$empty_dirs->{$1} = 1;
} elsif ($line =~ /^ \-empty_dir: (.+)$/) {
my @d = grep {m[^\Q$1\E(/|$)]} (keys %$empty_dirs);
delete @$empty_dirs{@d};
}
1; # continue
};

my %empty_dirs = ();
my $gz_file = "$self->{dir}/unhandled.log.gz";
if (-f $gz_file) {
if (!$can_compress) {
warn "Compress::Zlib could not be found; ",
"empty directories in $gz_file will not be read\n";
} else {
my $gz = Compress::Zlib::gzopen($gz_file, "rb") or
die "Unable to open $gz_file: $!\n";
my $line;
while ($gz->gzreadline($line) > 0) {
scan($r, \%empty_dirs, $line) or last;
}
$gz->gzclose;
}
}
close $fh;

if (open my $fh, '<', "$self->{dir}/unhandled.log") {
binmode $fh or croak "binmode: $!";
while (<$fh>) {
scan($r, \%empty_dirs, $_) or last;
}
close $fh;
}

my $strip = qr/\A\Q$self->{path}\E(?:\/|$)/;
foreach my $d (sort keys %empty_dirs) {

24
t/t9146-git-svn-empty-dirs.sh
View File

@ -114,5 +114,29 @@ test_expect_success 'removed top-level directory does not exist' '
test ! -e removed/d

'
unhandled=.git/svn/refs/remotes/git-svn/unhandled.log
test_expect_success 'git svn gc-ed files work' '
(
cd removed &&
git svn gc &&
: Compress::Zlib may not be available &&
if test -f "$unhandled".gz
then
svn mkdir -m gz "$svnrepo"/gz &&
git reset --hard $(git rev-list HEAD | tail -1) &&
git svn rebase &&
test -f "$unhandled".gz &&
test -f "$unhandled" &&
for i in a b c "weird file name" gz "! !"
do
if ! test -d "$i"
then
echo >&2 "$i does not exist"
exit 1
fi
done
fi
)
'

test_done