Make more fast and github-like repository viewer

src/main/scala/util/JGitUtil.scala

@@ -348,51 +348,11 @@ object JGitUtil {
    * @return the list of latest commit
    */
   def getLatestCommitFromPaths(git: Git, paths: List[String], revision: String): Map[String, RevCommit] = {
-
-    val map = new scala.collection.mutable.HashMap[String, RevCommit]
-
-    val revWalk = new RevWalk(git.getRepository)
-    revWalk.markStart(revWalk.parseCommit(git.getRepository.resolve(revision)))
-    //revWalk.sort(RevSort.REVERSE);
-    val i = revWalk.iterator
-
-    while(i.hasNext && map.size != paths.length){
-      val commit = i.next
-      if(commit.getParentCount == 0){
-        // Initial commit
-        val treeWalk = new TreeWalk(git.getRepository)
-        treeWalk.reset()
-        treeWalk.setRecursive(true)
-        treeWalk.addTree(commit.getTree)
-        while (treeWalk.next) {
-          paths.foreach { path =>
-            if(treeWalk.getPathString.startsWith(path) && !map.contains(path)){
-              map.put(path, commit)
-            }
-          }
-        }
-        treeWalk.release
-      } else {
-        (0 to commit.getParentCount - 1).foreach { i =>
-          val parent = revWalk.parseCommit(commit.getParent(i).getId())
-          val df = new DiffFormatter(DisabledOutputStream.INSTANCE)
-          df.setRepository(git.getRepository)
-          df.setDiffComparator(RawTextComparator.DEFAULT)
-          df.setDetectRenames(true)
-          val diffs = df.scan(parent.getTree(), commit.getTree)
-          diffs.asScala.foreach { diff =>
-            paths.foreach { path =>
-              if(diff.getChangeType != ChangeType.DELETE && diff.getNewPath.startsWith(path) && !map.contains(path)){
-                map.put(path, commit)
-              }
-            }
-          }
-        }
-      }
-
-      revWalk.release
-    }
-    map.toMap
+    val start = git.getRepository.resolve(revision)
+    paths.map { path =>
+      val commit = git.log.add(start).addPath(path).setMaxCount(1).call.iterator.next
+      (path, commit)
+    }.toMap
   }
 
   /**