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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