1 files changed, 66 insertions, 0 deletions
diff --git a/java/com/google/gerrit/testing/TempFileUtil.java b/java/com/google/gerrit/testing/TempFileUtil.java
new file mode 100644
index 0000000000..c42bd74dad
--- /dev/null
+++ b/java/com/google/gerrit/testing/TempFileUtil.java
@@ -0,0 +1,66 @@
+// Copyright (C) 2011 The Android Open Source Project
+//
+// 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.
+
+package com.google.gerrit.testing;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class TempFileUtil {
+  private static List<File> allDirsCreated = new ArrayList<>();
+
+  public static synchronized File createTempDirectory() throws IOException {
+    File tmp = File.createTempFile("gerrit_test_", "").getCanonicalFile();
+    if (!tmp.delete() || !tmp.mkdir()) {
+      throw new IOException("Cannot create " + tmp.getPath());
+    }
+    allDirsCreated.add(tmp);
+    return tmp;
+  }
+
+  public static synchronized void cleanup() throws IOException {
+    for (File dir : allDirsCreated) {
+      recursivelyDelete(dir);
+    }
+    allDirsCreated.clear();
+  }
+
+  public static void recursivelyDelete(File dir) throws IOException {
+    if (!dir.getPath().equals(dir.getCanonicalPath())) {
+      // Directory symlink reaching outside of temporary space.
+      return;
+    }
+    File[] contents = dir.listFiles();
+    if (contents != null) {
+      for (File d : contents) {
+        if (d.isDirectory()) {
+          recursivelyDelete(d);
+        } else {
+          deleteNowOrOnExit(d);
+        }
+      }
+    }
+    deleteNowOrOnExit(dir);
+  }
+
+  private static void deleteNowOrOnExit(File dir) {
+    if (!dir.delete()) {
+      dir.deleteOnExit();
+    }
+  }
+
+  private TempFileUtil() {}
+}