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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 #undef min
00027 #undef max
00028 #include <ostream>
00029 #include <sstream>
00030 #include <string>
00031 
00032 
00033 // This is a wrapper to make ::OutputDebugStringA behave like std::ostream
00034 // Derived from code written by Sven Axelsson
00035 // Documented: http://www.codeproject.com/KB/debug/debugout.aspx
00036 
00037 namespace cinder { namespace msw {
00038 
00039 template <class CharT, class TraitsT = std::char_traits<CharT> >
00040 class basic_debugbuf : 
00041     public std::basic_stringbuf<CharT, TraitsT>
00042 {
00043 public:
00044 
00045     virtual ~basic_debugbuf() {
00046         sync();
00047     }
00048 
00049 protected:
00050     int sync() {
00051         output_debug_string(str().c_str());
00052         str(std::basic_string<CharT>());    // Clear the string buffer
00053 
00054         return 0;
00055     }
00056 
00057     void output_debug_string(const CharT *text) {}
00058 };
00059 
00060 template<>
00061 void basic_debugbuf<char>::output_debug_string(const char *text)
00062 {
00063     ::OutputDebugStringA(text);
00064 }
00065 
00066 template<>
00067 void basic_debugbuf<wchar_t>::output_debug_string(const wchar_t *text)
00068 {
00069     ::OutputDebugStringW(text);
00070 }
00071 
00072 template<class CharT, class TraitsT = std::char_traits<CharT> >
00073 class basic_dostream : 
00074     public std::basic_ostream<CharT, TraitsT>
00075 {
00076 public:
00077 
00078     basic_dostream() : std::basic_ostream<CharT, TraitsT>
00079                 (new basic_debugbuf<CharT, TraitsT>()) {}
00080     ~basic_dostream() 
00081     {
00082         delete rdbuf(); 
00083     }
00084 };
00085 
00086 typedef basic_dostream<char>    dostream;
00087 typedef basic_dostream<wchar_t> wdostream;
00088 
00089 } } // namespace cinder::msw