src/Utils/DebugOutput.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2009, 2011, 2013-2014 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20 #include "registry.h"
  21
  22
  23 class CTraceToOutputDebugString
  24 {
  25 public:
  26         static CTraceToOutputDebugString& Instance()
  27         {
  28                 if (m_pInstance == NULL)
  29                         m_pInstance = new CTraceToOutputDebugString;
  30                 return *m_pInstance;
  31         }
  32
  33         static bool Active()
  34         {
  35                 return Instance().m_bActive;
  36         }
  37
  38         // Non Unicode output helper
  39         void operator()(PCSTR pszFormat, ...)
  40         {
  41                 if (m_bActive)
  42                 {
  43                         va_list ptr;
  44                         va_start(ptr, pszFormat);
  45                         TraceV(pszFormat,ptr);
  46                         va_end(ptr);
  47                 }
  48         }
  49
  50         // Unicode output helper
  51         void operator()(PCWSTR pszFormat, ...)
  52         {
  53                 if (m_bActive)
  54                 {
  55                         va_list ptr;
  56                         va_start(ptr, pszFormat);
  57                         TraceV(pszFormat,ptr);
  58                         va_end(ptr);
  59                 }
  60         }
  61
  62 private:
  63         CTraceToOutputDebugString()
  64         {
  65                 m_LastTick = GetTickCount();
  66                 m_bActive = !!CRegStdDWORD(_T("Software\\TortoiseGit\\DebugOutputString"), FALSE);
  67         }
  68         ~CTraceToOutputDebugString()
  69         {
  70                 delete m_pInstance;
  71         }
  72
  73         DWORD m_LastTick;
  74         bool    m_bActive;
  75         static CTraceToOutputDebugString * m_pInstance;
  76
  77         // Non Unicode output helper
  78         void TraceV(PCSTR pszFormat, va_list args) const
  79         {
  80                 // Format the output buffer
  81                 char szBuffer[1024];
  82                 _vsnprintf_s(szBuffer, _countof(szBuffer), _countof(szBuffer)-1, pszFormat, args);
  83                 OutputDebugStringA(szBuffer);
  84         }
  85
  86         // Unicode output helper
  87         void TraceV(PCWSTR pszFormat, va_list args) const
  88         {
  89                 wchar_t szBuffer[1024];
  90                 _vsnwprintf_s(szBuffer, _countof(szBuffer), _countof(szBuffer)-1, pszFormat, args);
  91                 OutputDebugStringW(szBuffer);
  92         }
  93
  94         bool IsActive()
  95         {
  96 #ifdef DEBUG
  97                 return true;
  98 #else
  99                 if (GetTickCount() - m_LastTick > 10000)
 100                 {
 101                         m_LastTick = GetTickCount();
 102                         m_bActive = !!CRegStdDWORD(_T("Software\\TortoiseGit\\DebugOutputString"), FALSE);
 103                 }
 104                 return m_bActive;
 105 #endif
 106         }
 107 };