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split_writer.h
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1 /*
2  * Copyright 2010 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http:///www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
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13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
18 
19 #ifndef PAGESPEED_KERNEL_BASE_SPLIT_WRITER_H_
20 #define PAGESPEED_KERNEL_BASE_SPLIT_WRITER_H_
21 
25 
26 namespace net_instaweb {
27 
28 class MessageHandler;
29 
31 class SplitWriter : public Writer {
32  public:
33  SplitWriter(Writer* sub_writer1, Writer* sub_writer2)
34  : writer1_(sub_writer1), writer2_(sub_writer2) {
35  }
36 
37  virtual ~SplitWriter();
38 
39  virtual bool Write(const StringPiece& str, MessageHandler* handler) {
40  bool ret = writer1_->Write(str, handler);
41  ret &= writer2_->Write(str, handler);
42  return ret;
43  }
44 
45  virtual bool Flush(MessageHandler* handler) {
46  bool ret = writer1_->Flush(handler);
47  ret &= writer2_->Flush(handler);
48  return ret;
49  }
50 
51  private:
52  Writer* writer1_;
53  Writer* writer2_;
54 
55 
56 };
57 
58 }
59 
60 #endif
Interface for writing bytes to an output stream.
Definition: writer.h:29
Definition: message_handler.h:39
SplitWriter writes to two sub-writers.
Definition: split_writer.h:31