git-svn: detect and fail gracefully when dcommitting to a void

[git.git] / git-svn.perl

diff --git a/git-svn.perl b/git-svn.perl
index 1b44cbe10682401b9296d19f7a3595819e60702b..711e7b7eb9274c9de292d6f36fca9a9f0baf6318 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -410,10 +410,12 @@ sub cmd_dcommit {
        $head ||= 'HEAD';
        my @refs;
        my ($url, $rev, $uuid, $gs) = working_head_info($head, \@refs);
-       print "Committing to $url ...\n";
+       if ($url) {
+               print "Committing to $url ...\n";
+       }
        unless ($gs) {
                die "Unable to determine upstream SVN information from ",
-                   "$head history\n";
+                   "$head history.\nPerhaps the repository is empty.";
        }
        my $last_rev;
        my ($linear_refs, $parents) = linearize_history($gs, \@refs);
@@ -1120,7 +1122,7 @@ sub cmt_metadata {
 
 sub working_head_info {
        my ($head, $refs) = @_;
-       my @args = ('log', '--no-color', '--first-parent');
+       my @args = ('log', '--no-color', '--first-parent', '--pretty=medium');
        my ($fh, $ctx) = command_output_pipe(@args, $head);
        my $hash;
        my %max;
@@ -2239,12 +2241,13 @@ sub find_parent_branch {
                # just grow a tail if we're not unique enough :x
                $ref_id .= '-' while find_ref($ref_id);
                print STDERR "Initializing parent: $ref_id\n";
-               my ($u, $p) = ($new_url, '');
+               my ($u, $p, $repo_id) = ($new_url, '', $ref_id);
                if ($u =~ s#^\Q$url\E(/|$)##) {
                        $p = $u;
                        $u = $url;
+                       $repo_id = $self->{repo_id};
                }
-               $gs = Git::SVN->init($u, $p, $self->{repo_id}, $ref_id, 1);
+               $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1);
        }
        my ($r0, $parent) = $gs->find_rev_before($r, 1);
        if (!defined $r0 || !defined $parent) {
@@ -2374,8 +2377,7 @@ sub check_author {
        my ($author) = @_;
        if (!defined $author || length $author == 0) {
                $author = '(no author)';
-       }
-       if (defined $::_authors && ! defined $::users{$author}) {
+       } elsif (defined $::_authors && ! defined $::users{$author}) {
                die "Author: $author not defined in $::_authors file\n";
        }
        $author;
@@ -2518,6 +2520,7 @@ sub rebuild_from_rev_db {
        my ($self, $path) = @_;
        my $r = -1;
        open my $fh, '<', $path or croak "open: $!";
+       binmode $fh or croak "binmode: $!";
        while (<$fh>) {
                length($_) == 41 or croak "inconsistent size in ($_) != 41";
                chomp($_);
@@ -2615,6 +2618,7 @@ sub rebuild {
 sub _rev_map_set {
        my ($fh, $rev, $commit) = @_;
 
+       binmode $fh or croak "binmode: $!";
        my $size = (stat($fh))[7];
        ($size % 24) == 0 or croak "inconsistent size: $size";
 
@@ -2718,6 +2722,7 @@ sub rev_map_max {
        my $map_path = $self->map_path;
        stat $map_path or return $want_commit ? (0, undef) : 0;
        sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+       binmode $fh or croak "binmode: $!";
        my $size = (stat($fh))[7];
        ($size % 24) == 0 or croak "inconsistent size: $size";
 
@@ -2750,6 +2755,7 @@ sub rev_map_get {
        return undef unless -e $map_path;
 
        sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+       binmode $fh or croak "binmode: $!";
        my $size = (stat($fh))[7];
        ($size % 24) == 0 or croak "inconsistent size: $size";