* code for task #7548.

lib/scm/gitrepo.class.php

@@ -328,6 +328,19 @@ class GitRepo
         return $info;
     }
 
+    /**
+     * Exec git cmd.
+     * 
+     * @param  string $cmd 
+     * @access public
+     * @return array
+     */
+    public function exec($cmd)
+    {
+        chdir($this->root);
+        return execCmd(escapeCmd("$this->client $cmd"), 'array');
+    }
+
     /**
      * Parse diff.
      * 

lib/scm/scm.class.php

@@ -141,6 +141,18 @@ class scm
         return $this->engine->info($entry, $revision);
     }
 
+    /**
+     * Exec scm cmd.
+     * 
+     * @param  string $cmd 
+     * @access public
+     * @return array
+     */
+    public function exec($cmd)
+    {
+        return $this->engine->exec($cmd);
+    }
+
     /**
      * Get commit count 
      * 

lib/scm/subversion.class.php

@@ -403,6 +403,19 @@ class Subversion
         return $info;
     }
 
+    /**
+     * Exec svn cmd.
+     * 
+     * @param  string $cmd 
+     * @access public
+     * @return array
+     */
+    public function exec($cmd)
+    {
+        $cmd = $this->replaceAuth(escapeCmd($this->buildCMD('', $cmd, '')));
+        return execCmd($cmd, 'array');
+    }
+
     /**
      * Parse diff.
      * 

module/repo/control.php

@@ -409,39 +409,14 @@ class repo extends control
         {
             if($repo->SCM == 'Git')
             {
-                $branch = $this->dao->select('*')->from(TABLE_REPOBRANCH)->where('revision')->eq($history->id)->fetch('branch');
-                $prevHistories = $this->dao->select('t1.*')->from(TABLE_REPOHISTORY)->alias('t1')
-                    ->leftJoin(TABLE_REPOBRANCH)->alias('t2')->on('t1.id=t2.revision')
-                    ->where('t1.id')->le($history->id)
-                    ->andWhere('t1.repo')->eq($repoID)
-                    ->andWhere('t2.branch')->eq($branch)
-                    ->orderBy('t1.time_desc')
-                    ->limit(2)
-                    ->fetchAll();
-                $currentHistory = array_shift($prevHistories);
-                if($history->id != $currentHistory->id)
-                {
-                    $prevHistories = $this->dao->select('t1.*')->from(TABLE_REPOHISTORY)->alias('t1')
-                        ->leftJoin(TABLE_REPOBRANCH)->alias('t2')->on('t1.id=t2.revision')
-                        ->where('t1.id')->ge($history->id)
-                        ->andWhere('t1.repo')->eq($repoID)
-                        ->andWhere('t2.branch')->eq($branch)
-                        ->orderBy('t1.time_desc')
-                        ->limit(2)
-                        ->fetchAll();
-                    array_shift($prevHistories);
-                }
-                $prevHistory = array_pop($prevHistories);
-                if($prevHistory) $oldRevision = $prevHistory->revision;
+                $thisAndPrevRevisions = $this->scm->exec("rev-list -n 2 {$history->revision} --");
+
+                array_shift($thisAndPrevRevisions);
+                if($thisAndPrevRevisions) $oldRevision = array_shift($thisAndPrevRevisions);
             }
             else
             {
-                $oldRevision = $this->dao->select('*')->from(TABLE_REPOHISTORY)
-                    ->where('revision')->lt($history->revision)
-                    ->andWhere('repo')->eq($repoID)
-                    ->orderBy('revision_desc')
-                    ->limit(1)
-                    ->fetch('revision');
+                $oldRevision = $this->dao->select('*')->from(TABLE_REPOHISTORY)->where('revision')->lt($history->revision)->andWhere('repo')->eq($repoID)->orderBy('revision_desc')->limit(1)->fetch('revision');
             }
 
             $log[0]->commit = $history->commit;