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include/cinder/msw/OutputDebugStringStream.h

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00001 /*
00002  Copyright (c) 2010, The Barbarian Group
00003  All rights reserved.
00004 
00005  Redistribution and use in source and binary forms, with or without modification, are permitted provided that
00006  the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and
00009     the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
00011     the following disclaimer in the documentation and/or other materials provided with the distribution.
00012 
00013  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
00014  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00015  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
00016  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00017  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00018  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00019  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00020  POSSIBILITY OF SUCH DAMAGE.
00021 */
00022 
00023 #pragma once
00024 
00025 #include <Windows.h>
00026 #include <ostream>
00027 #include <sstream>
00028 #include <string>
00029 
00030 
00031 // This is a wrapper to make ::OutputDebugStringA behave like std::ostream
00032 // Derived from code written by Sven Axelsson
00033 // Documented: http://www.codeproject.com/KB/debug/debugout.aspx
00034 
00035 namespace cinder { namespace msw {
00036 
00037 template <class CharT, class TraitsT = std::char_traits<CharT> >
00038 class basic_debugbuf : 
00039     public std::basic_stringbuf<CharT, TraitsT>
00040 {
00041 public:
00042 
00043     virtual ~basic_debugbuf() {
00044         sync();
00045     }
00046 
00047 protected:
00048     int sync() {
00049         output_debug_string(str().c_str());
00050         str(std::basic_string<CharT>());    // Clear the string buffer
00051 
00052         return 0;
00053     }
00054 
00055     void output_debug_string(const CharT *text) {}
00056 };
00057 
00058 template<>
00059 void basic_debugbuf<char>::output_debug_string(const char *text)
00060 {
00061     ::OutputDebugStringA(text);
00062 }
00063 
00064 template<>
00065 void basic_debugbuf<wchar_t>::output_debug_string(const wchar_t *text)
00066 {
00067     ::OutputDebugStringW(text);
00068 }
00069 
00070 template<class CharT, class TraitsT = std::char_traits<CharT> >
00071 class basic_dostream : 
00072     public std::basic_ostream<CharT, TraitsT>
00073 {
00074 public:
00075 
00076     basic_dostream() : std::basic_ostream<CharT, TraitsT>
00077                 (new basic_debugbuf<CharT, TraitsT>()) {}
00078     ~basic_dostream() 
00079     {
00080         delete rdbuf(); 
00081     }
00082 };
00083 
00084 typedef basic_dostream<char>    dostream;
00085 typedef basic_dostream<wchar_t> wdostream;
00086 
00087 } } // namespace cinder::msw