1 files changed, 59 insertions, 0 deletions
diff --git a/src/tools/android/java/com/google/devtools/build/android/desugar/io/DirectoryOutputFileProvider.java b/src/tools/android/java/com/google/devtools/build/android/desugar/io/DirectoryOutputFileProvider.java
new file mode 100644
index 0000000000..f8e87cbb33
--- /dev/null
+++ b/src/tools/android/java/com/google/devtools/build/android/desugar/io/DirectoryOutputFileProvider.java
@@ -0,0 +1,59 @@
+// Copyright 2017 The Bazel Authors. All rights reserved.
+//
+// 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.devtools.build.android.desugar.io;
+
+import com.google.common.io.ByteStreams;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+/** Output provider is a directory. */
+class DirectoryOutputFileProvider implements OutputFileProvider {
+
+  private final Path root;
+
+  public DirectoryOutputFileProvider(Path root) {
+    this.root = root;
+  }
+
+  @Override
+  public void copyFrom(String filename, InputFileProvider inputFileProvider) throws IOException {
+    Path path = root.resolve(filename);
+    createParentFolder(path);
+    try (InputStream is = inputFileProvider.getInputStream(filename);
+        OutputStream os = Files.newOutputStream(path)) {
+      ByteStreams.copy(is, os);
+    }
+  }
+
+  @Override
+  public void write(String filename, byte[] content) throws IOException {
+    Path path = root.resolve(filename);
+    createParentFolder(path);
+    Files.write(path, content);
+  }
+
+  @Override
+  public void close() {
+    // Nothing to close
+  }
+
+  private void createParentFolder(Path path) throws IOException {
+    if (!Files.exists(path.getParent())) {
+      Files.createDirectories(path.getParent());
+    }
+  }
+}