Bug 617802: Add see also support for Rietveld installations on appspot.com

Bugzilla/BugUrl.pm

@@ -57,6 +57,7 @@ use constant SUB_CLASSES => qw(
     Bugzilla::BugUrl::MantisBT
     Bugzilla::BugUrl::SourceForge
     Bugzilla::BugUrl::ReviewBoard
+    Bugzilla::BugUrl::Rietveld
 );
 
 ###############################

Bugzilla/BugUrl/Rietveld.pm

+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This Source Code Form is "Incompatible With Secondary Licenses", as
+# defined by the Mozilla Public License, v. 2.0.
+
+package Bugzilla::BugUrl::Rietveld;
+use strict;
+use base qw(Bugzilla::BugUrl);
+
+###############################
+####        Methods        ####
+###############################
+
+sub should_handle {
+    my ($class, $uri) = @_;
+    return ($uri->authority =~ /\.appspot\.com$/i
+            and $uri->path =~ m#^/\d+(?:/|/show)?$#) ? 1 : 0;
+}
+
+sub _check_value {
+    my ($class, $uri) = @_;
+
+    $uri = $class->SUPER::_check_value($uri);
+
+    # Rietveld URLs have three forms:
+    #   http(s)://example.appspot.com/1234
+    #   http(s)://example.appspot.com/1234/
+    #   http(s)://example.appspot.com/1234/show
+    if ($uri->path =~ m#^/(\d+)(?:/|/show)$#) {
+        # This is the shortest standard URL form for Rietveld issues,
+        # and so we reduce all URLs to this.
+        $uri->path('/' . $1);
+    }
+
+    # Make sure there are no query parameters.
+    $uri->query(undef);
+    # And remove any # part if there is one.
+    $uri->fragment(undef);
+
+    return $uri;
+}
+
+1;

template/en/default/global/user-error.html.tmpl

@@ -255,6 +255,7 @@
         <li>A b[% %]ug in a MantisBT installation.</li>
         <li>A b[% %]ug on sourceforge.net.</li>
         <li>A Review Board review request.</li>
+        <li>An issue in a Rietveld installation.</li>
       </ul>
     [% ELSIF reason == 'id' %]
       There is no valid [% terms.bug %] id in that URL.