text: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  #ifndef PAGESPEED_KERNEL_BASE_SPLIT_WRITER_H_
  #define PAGESPEED_KERNEL_BASE_SPLIT_WRITER_H_
  
  #include "pagespeed/kernel/base/basictypes.h"
  #include "pagespeed/kernel/base/string_util.h"
  #include "pagespeed/kernel/base/writer.h"
  
  namespace net_instaweb {
  
  class MessageHandler;
  
  // SplitWriter writes to two sub-writers.
  class SplitWriter : public Writer {
   public:
    SplitWriter(Writer* sub_writer1, Writer* sub_writer2)
        : writer1_(sub_writer1), writer2_(sub_writer2) {}
  
    ~SplitWriter() override;
  
    bool Write(const StringPiece& str, MessageHandler* handler) override {
      bool ret = writer1_->Write(str, handler);
      ret &= writer2_->Write(str, handler);
      return ret;
    }
  
    bool Flush(MessageHandler* handler) override {
      bool ret = writer1_->Flush(handler);
      ret &= writer2_->Flush(handler);
      return ret;
    }
  
   private:
    Writer* writer1_;
    Writer* writer2_;
  
    DISALLOW_COPY_AND_ASSIGN(SplitWriter);
  };
  
  }  // namespace net_instaweb
  
  #endif  // PAGESPEED_KERNEL_BASE_SPLIT_WRITER_H_
  