Panda3D
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multiplexStreamBuf.h
00001 // Filename: multiplexStreamBuf.h
00002 // Created by:  drose (27Nov00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef MULTIPLEXSTREAMBUF_H
00016 #define MULTIPLEXSTREAMBUF_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "pvector.h"
00021 #include <stdio.h>
00022 
00023 ////////////////////////////////////////////////////////////////////
00024 //       Class : MultiplexStreamBuf
00025 // Description : Used by MultiplexStream to implement an ostream that
00026 //               sends what is written to it to any number of
00027 //               additional sources, like other ostreams.
00028 ////////////////////////////////////////////////////////////////////
00029 class EXPCL_PANDAEXPRESS MultiplexStreamBuf : public streambuf {
00030 public:
00031   MultiplexStreamBuf();
00032   virtual ~MultiplexStreamBuf();
00033 
00034   enum BufferType {
00035     BT_none,
00036     BT_line,
00037   };
00038 
00039   enum OutputType {
00040     OT_ostream,
00041     OT_stdio,
00042     OT_system_debug,
00043   };
00044 
00045   void add_output(BufferType buffer_type, OutputType output_type,
00046                   ostream *out = (ostream *)NULL,
00047                   FILE *fout = (FILE *)NULL,
00048                   bool owns_obj = false);
00049 
00050   void flush();
00051 
00052 protected:
00053   virtual int overflow(int c);
00054   virtual int sync();
00055 
00056 private:
00057   void write_chars(const char *start, int length, bool flush);
00058 
00059 
00060   class Output {
00061   public:
00062     void close();
00063     void write_string(const string &str);
00064 
00065     BufferType _buffer_type;
00066     OutputType _output_type;
00067     ostream *_out;
00068     FILE *_fout;
00069     bool _owns_obj;
00070   };
00071 
00072   typedef pvector<Output> Outputs;
00073   Outputs _outputs;
00074 
00075   string _line_buffer;
00076 };
00077 
00078 #include "multiplexStreamBuf.I"
00079 
00080 #endif
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