| // Copyright 2015 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.zip; |
| |
| import java.io.FilterOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** An OutputStream that counts the number of bytes written. */ |
| final class CountingOutputStream extends FilterOutputStream { |
| |
| private long count; |
| |
| /** |
| * Wraps another output stream, counting the number of bytes written. |
| * |
| * @param out the output stream to be wrapped |
| */ |
| public CountingOutputStream(OutputStream out) { |
| super(out); |
| } |
| |
| /** Returns the number of bytes written. */ |
| public long getCount() { |
| return count; |
| } |
| |
| @Override public void write(int b) throws IOException { |
| out.write(b); |
| count++; |
| } |
| |
| @Override public void write(byte[] b) throws IOException { |
| out.write(b); |
| count += b.length; |
| } |
| |
| @Override public void write(byte[] b, int off, int len) throws IOException { |
| out.write(b, off, len); |
| count += len; |
| } |
| } |