git-svn: fix handling of filenames with embedded '@'

svn has trouble parsing files with embedded '@' characters.  For
example,

  svn propget svn:keywords foo@bar.c
  svn: Syntax error parsing revision 'bar.c'

I asked about this on #svn and the workaround suggested was to append
an explicit revision specifier:

  svn propget svn:keywords foo@bar.c@BASE

This patch appends '@BASE' to the filename in all calls to 'svn
propget'.

Patch originally by Seth Falcon <sethfalcon@gmail.com>
Seth: signoff?

[ew: Made to work with older svn that don't support peg revisions]

Signed-off-by: Eric Wong <normalperson@yhbt.net>

diff --git a/contrib/git-svn/git-svn.perl b/contrib/git-svn/git-svn.perl
index aac8779..7ed11ef 100755 (executable)
--- a/contrib/git-svn/git-svn.perl
+++ b/contrib/git-svn/git-svn.perl
@@ -34,7 +34,7 @@ my $sha1_short = qr/[a-f\d]{4,40}/;
 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
        $_find_copies_harder, $_l, $_version, $_upgrade, $_authors);
 my (@_branch_from, %tree_map, %users);
-my $_svn_co_url_revs;
+my ($_svn_co_url_revs, $_svn_pg_peg_revs);
 
 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
                'branch|b=s' => \@_branch_from,
@@ -336,7 +336,7 @@ sub show_ignore {
        my %ign;
        File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
                s#^\./##;
-               @{$ign{$_}} = safe_qx(qw(svn propget svn:ignore),$_);
+               @{$ign{$_}} = svn_propget_base('svn:ignore', $_);
                }}, no_chdir=>1},'.');
 
        print "\n# /\n";
@@ -859,7 +859,7 @@ sub sys { system(@_) == 0 or croak $? }
 
 sub eol_cp {
        my ($from, $to) = @_;
-       my $es = safe_qx(qw/svn propget svn:eol-style/, $to);
+       my $es = svn_propget_base('svn:eol-style', $to);
        open my $rfd, '<', $from or croak $!;
        binmode $rfd or croak $!;
        open my $wfd, '>', $to or croak $!;
@@ -897,7 +897,7 @@ sub do_update_index {
        while (my $x = <$p>) {
                chomp $x;
                if (!$no_text_base && lstat $x && ! -l _ &&
-                               safe_qx(qw/svn propget svn:keywords/,$x)) {
+                               svn_propget_base('svn:keywords', $x)) {
                        my $mode = -x _ ? 0755 : 0644;
                        my ($v,$d,$f) = File::Spec->splitpath($x);
                        my $tb = File::Spec->catfile($d, '.svn', 'tmp',
@@ -1135,6 +1135,9 @@ sub svn_compat_check {
        if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
                $_svn_co_url_revs = 1;
        }
+       if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
+               $_svn_pg_peg_revs = 1;
+       }
 
        # I really, really hope nobody hits this...
        unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
@@ -1214,6 +1217,12 @@ sub load_authors {
        close $authors or croak $!;
 }
 
+sub svn_propget_base {
+       my ($p, $f) = @_;
+       $f .= '@BASE' if $_svn_pg_peg_revs;
+       return safe_qx(qw/svn propget/, $p, $f);
+}
+
 __END__
 
 Data structures: