Use PhutilBugtraqParser in Phabricator

Summary: Fixes T3840. Depends on D7021. See task for discussion. Also improved some config/help stuff.

Test Plan: See screenshot.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3840

Differential Revision: https://secure.phabricator.com/D7022

src/applications/diffusion/controller/DiffusionCommitController.php

@@ -106,7 +106,7 @@ final class DiffusionCommitController extends DiffusionController {
       $message = $commit_data->getCommitMessage();
 
       $revision = $commit->getCommitIdentifier();
-      $message = $repository->linkBugtraq($message, $revision);
+      $message = $this->linkBugtraq($message);
 
       $message = $engine->markupText($message);
 
@@ -999,4 +999,27 @@ final class DiffusionCommitController extends DiffusionController {
     return $view;
   }
 
+  private function linkBugtraq($corpus) {
+    $url = PhabricatorEnv::getEnvConfig('bugtraq.url');
+    if (!strlen($url)) {
+      return $corpus;
+    }
+
+    $regexes = PhabricatorEnv::getEnvConfig('bugtraq.logregex');
+    if (!$regexes) {
+      return $corpus;
+    }
+
+    $parser = id(new PhutilBugtraqParser())
+      ->setBugtraqPattern("[[ {$url} | %BUGID% ]]")
+      ->setBugtraqCaptureExpression(array_shift($regexes));
+
+    $select = array_shift($regexes);
+    if ($select) {
+      $parser->setBugtraqSelectExpression($select);
+    }
+
+    return $parser->processCorpus($corpus);
+  }
+
 }