Basic DiffusionGitDiffQuery.

src/applications/diffusion/query/diff/git/DiffusionGitDiffQuery.php

@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * Copyright 2011 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class DiffusionGitDiffQuery extends DiffusionDiffQuery {
+
+  protected function executeQuery() {
+    $drequest = $this->getRequest();
+    $repository = $drequest->getRepository();
+
+    $options = array(
+      '-M',
+      '-C',
+      '--no-ext-diff',
+      '--no-color',
+      '--src-prefix=a/',
+      '--dst-prefix=b/',
+      '-U65535',
+    );
+    $options = implode(' ', $options);
+
+    list($raw_diff) = execx(
+      "(cd %s && git diff {$options} %s^ %s -- %s)",
+      $repository->getDetail('local-path'),
+      $drequest->getCommit(),
+      $drequest->getCommit(),
+      $drequest->getPath());
+
+    $parser = new ArcanistDiffParser();
+    $parser->setDetectBinaryFiles(true);
+    $changes = $parser->parseDiff($raw_diff);
+
+    $diff = DifferentialDiff::newFromRawChanges($changes);
+    $changesets = $diff->getChangesets();
+    $changeset = reset($changesets);
+
+    $id =
+      $drequest->getBranch().'/'.
+      $drequest->getPath().';'.
+      $drequest->getCommit();
+
+    $changeset->setID($id);
+
+    return $changeset;
+  }
+
+}