1 files changed, 68 insertions, 0 deletions
diff --git a/jack-launcher/src/com/android/jack/launcher/util/BytesStreamSucker.java b/jack-launcher/src/com/android/jack/launcher/util/BytesStreamSucker.java
new file mode 100644
index 00000000..8d5d672a
--- /dev/null
+++ b/jack-launcher/src/com/android/jack/launcher/util/BytesStreamSucker.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2012 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.android.jack.launcher.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Class that continuously read an {@link InputStream} and optionally could write the input in a
+ * {@link OutputStream}.
+ */
+public class BytesStreamSucker {
+
+  private static final int BUFFER_SIZE = 4096;
+
+  @Nonnull
+  private final byte[] buffer = new byte[BUFFER_SIZE];
+
+  @Nonnull
+  private final InputStream is;
+
+  @Nonnull
+  private final OutputStream os;
+
+  private final boolean toBeClose;
+
+  public BytesStreamSucker(
+      @Nonnull InputStream is, @Nonnull OutputStream os, boolean toBeClose) {
+    this.is = is;
+    this.os = os;
+    this.toBeClose = toBeClose;
+  }
+
+  public BytesStreamSucker(@Nonnull InputStream is, @Nonnull OutputStream os) {
+    this(is, os, false);
+  }
+
+  public void suck() throws IOException {
+    try {
+      int bytesRead;
+      while ((bytesRead = is.read(buffer)) >= 0) {
+        os.write(buffer, 0, bytesRead);
+        os.flush();
+      }
+    } finally {
+      if (toBeClose) {
+        os.close();
+      }
+    }
+  }
+}
+\ No newline at end of file