1 files changed, 90 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/actions/BinaryFileWriteAction.java b/src/main/java/com/google/devtools/build/lib/analysis/actions/BinaryFileWriteAction.java
new file mode 100644
index 0000000000..b9a2ea56cf
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/analysis/actions/BinaryFileWriteAction.java
@@ -0,0 +1,90 @@
+// Copyright 2014 Google Inc. 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.lib.analysis.actions;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
+import com.google.common.io.ByteSource;
+import com.google.common.io.ByteStreams;
+import com.google.devtools.build.lib.actions.ActionOwner;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.Executor;
+import com.google.devtools.build.lib.events.EventHandler;
+import com.google.devtools.build.lib.util.Fingerprint;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+/**
+ * Action to write a binary file.
+ */
+public final class BinaryFileWriteAction extends AbstractFileWriteAction {
+
+  private static final String GUID = "eeee07fe-4b40-11e4-82d6-eba0b4f713e2";
+
+  private final ByteSource source;
+
+  /**
+   * Creates a new BinaryFileWriteAction instance without inputs.
+   *
+   * @param owner the action owner.
+   * @param output the Artifact that will be created by executing this Action.
+   * @param source a source of bytes that will be written to the file.
+   * @param makeExecutable iff true will change the output file to be executable.
+   */
+  public BinaryFileWriteAction(
+      ActionOwner owner, Artifact output, ByteSource source, boolean makeExecutable) {
+    super(owner, /*inputs=*/Artifact.NO_ARTIFACTS, output, makeExecutable);
+    this.source = Preconditions.checkNotNull(source);
+  }
+
+  @VisibleForTesting
+  public ByteSource getSource() {
+    return source;
+  }
+
+  @Override
+  public DeterministicWriter newDeterministicWriter(EventHandler eventHandler, Executor executor) {
+    return new DeterministicWriter() {
+      @Override
+      public void writeOutputFile(OutputStream out) throws IOException {
+        try (InputStream in = source.openStream()) {
+          ByteStreams.copy(in, out);
+        }
+        out.flush();
+      }
+    };
+  }
+
+  @Override
+  protected String computeKey() {
+    Fingerprint f = new Fingerprint();
+    f.addString(GUID);
+    f.addString(String.valueOf(makeExecutable));
+
+    try (InputStream in = source.openStream()) {
+      byte[] buffer = new byte[512];
+      int amountRead;
+      while ((amountRead = in.read(buffer)) != -1) {
+        f.addBytes(buffer, 0, amountRead);
+      }
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+
+    return f.hexDigestAndReset();
+  }
+}