ref-filter: provide a function for parsing sort options

diff --git a/perl/Git.pm b/perl/Git.pm
index bfce1f795dfa5fea05f4f96637a1ae2333038735..f4b56e6d4d38cbc4365ecfc9073f5caf3a05377a 100644 (file)
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -61,7 +61,8 @@ =head1 SYNOPSIS
                 remote_refs prompt
                 get_tz_offset get_record
                 credential credential_read credential_write
-                temp_acquire temp_is_locked temp_release temp_reset temp_path);
+                temp_acquire temp_is_locked temp_release temp_reset temp_path
+                unquote_path);
 
 
 =head1 DESCRIPTION
@@ -1451,6 +1452,57 @@ sub prefix_lines {
        return $string;
 }
 
+=item unquote_path ( PATH )
+
+Unquote a quoted path containing c-escapes as returned by ls-files etc.
+when not using -z or when parsing the output of diff -u.
+
+=cut
+
+{
+       my %cquote_map = (
+               "a" => chr(7),
+               "b" => chr(8),
+               "t" => chr(9),
+               "n" => chr(10),
+               "v" => chr(11),
+               "f" => chr(12),
+               "r" => chr(13),
+               "\\" => "\\",
+               "\042" => "\042",
+       );
+
+       sub unquote_path {
+               local ($_) = @_;
+               my ($retval, $remainder);
+               if (!/^\042(.*)\042$/) {
+                       return $_;
+               }
+               ($_, $retval) = ($1, "");
+               while (/^([^\\]*)\\(.*)$/) {
+                       $remainder = $2;
+                       $retval .= $1;
+                       for ($remainder) {
+                               if (/^([0-3][0-7][0-7])(.*)$/) {
+                                       $retval .= chr(oct($1));
+                                       $_ = $2;
+                                       last;
+                               }
+                               if (/^([\\\042abtnvfr])(.*)$/) {
+                                       $retval .= $cquote_map{$1};
+                                       $_ = $2;
+                                       last;
+                               }
+                               # This is malformed
+                               throw Error::Simple("invalid quoted path $_[0]");
+                       }
+                       $_ = $remainder;
+               }
+               $retval .= $_;
+               return $retval;
+       }
+}
+
 =item get_comment_line_char ( )
 
 Gets the core.commentchar configuration value.