Shamusworld >> Repos - ttedit/blob - src/debug.cpp

   1 //\r
   2 // DEBUG.CPP: Debugging support\r
   3 // by James L. Hammons\r
   4 // (C) 2002 Underground Software\r
   5 //\r
   6 //   JLH = James Hammons <jlhamm@acm.org>\r
   7 //\r
   8 // Who  When        What\r
   9 // ---  ----------  ------------------------------------------------------------\r
  10 // JLH  07/31/2002  Created this file\r
  11 // JLH  07/31/2002  Added debug log functions & system error logging functions\r
  12 // JLH  08/16/2002  Added debug log function for SQL error reporting, made\r
  13 //                  WriteLogMsg thread safe\r
  14 // JLH  12/10/2002  Added code to have a background message window\r
  15 // JLH  05/14/2004  Converted code to C++ (sans ODBC logging)\r
  16 // JLH  05/15/2005  Converted code to generic C++\r
  17 //\r
  18 \r
  19 //#include <windows.h>\r
  20 //#include <odbc.h>\r
  21 #include <stdarg.h>\r
  22 #include <stdio.h>\r
  23 #include "debug.h"\r
  24 \r
  25 // EQUATES\r
  26 \r
  27 //#define USDB_WRITEMESSAGE  WM_USER + 1                        // Display a message on the debug window\r
  28 \r
  29 // Function prototypes\r
  30 \r
  31 //void CreateDebugWin(void);\r
  32 //LRESULT CALLBACK DebugWinProc(HWND, UINT, WPARAM, LPARAM);\r
  33 \r
  34 // CONSTANTS\r
  35 \r
  36 const char logFilename[] = "debug.log";\r
  37 \r
  38 // DATA\r
  39 \r
  40 FILE * logFile = NULL;\r
  41 \r
  42 // UNINITIALIZED DATA\r
  43 \r
  44 //CRITICAL_SECTION csLock;                                              // Critical section lock\r
  45 \r
  46 //\r
  47 // Open the debugging log file\r
  48 //\r
  49 void OpenDebugLog(void)\r
  50 {\r
  51 //      hLogFile = CreateFile(logFilename, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE,\r
  52 //              NULL, CREATE_ALWAYS, FILE_FLAG_WRITE_THROUGH | FILE_ATTRIBUTE_NORMAL, NULL);\r
  53 //      InitializeCriticalSection(&csLock);\r
  54         logFile = fopen(logFilename, "wb");\r
  55 #ifdef DEBUGWIN\r
  56         CreateDebugWin();\r
  57 #endif\r
  58 }\r
  59 \r
  60 //\r
  61 // Close the debugging log file\r
  62 //\r
  63 void CloseDebugLog(void)\r
  64 {\r
  65 //      CloseHandle(hLogFile);\r
  66         fclose(logFile);\r
  67 //      DeleteCriticalSection(&csLock);\r
  68 \r
  69 //      if (hDebugWnd)\r
  70 //              DestroyWindow(hDebugWnd);\r
  71 }\r
  72 \r
  73 //\r
  74 // Write a message to the log file\r
  75 //\r
  76 /*void WriteLogMsg(char * msg)\r
  77 {\r
  78         if (!msg)                                                                       // Check for valid pointer\r
  79                 return;\r
  80 \r
  81         EnterCriticalSection(&csLock);\r
  82 \r
  83         if (hLogFile)\r
  84                 WriteFile(hLogFile, msg, lstrlen(msg), &wfBytesWritten, NULL);\r
  85 \r
  86         if (hDebugWnd)\r
  87                 SendMessage(hDebugWnd, USDB_WRITEMESSAGE, FALSE, (LPARAM)msg);\r
  88 \r
  89         LeaveCriticalSection(&csLock);\r
  90 }//*/\r
  91 \r
  92 //\r
  93 // This logger is used mainly to ensure that text gets written to the log file\r
  94 // even if the program crashes. The performance hit is acceptable in this case!\r
  95 //\r
  96 void WriteLogMsg(const char * msg, ...)\r
  97 {\r
  98         if (!msg)                                                                       // Check for valid pointer\r
  99                 return;\r
 100 \r
 101 //      EnterCriticalSection(&csLock);\r
 102 \r
 103         va_list arg;\r
 104 \r
 105         va_start(arg, msg);\r
 106 //      wvsprintf(str, msg, arg);\r
 107         if (logFile)\r
 108         {\r
 109                 vfprintf(logFile, msg, arg);\r
 110                 fflush(logFile);\r
 111         }\r
 112 \r
 113         va_end(arg);\r
 114 \r
 115 //      if (hLogFile)\r
 116 //              WriteFile(hLogFile, str, lstrlen(msg), &wfBytesWritten, NULL);\r
 117 \r
 118 //      if (hDebugWnd)\r
 119 //              SendMessage(hDebugWnd, USDB_WRITEMESSAGE, FALSE, (LPARAM)str);\r
 120 \r
 121 //      LeaveCriticalSection(&csLock);\r
 122 }\r
 123 \r
 124 \r
 125 //\r
 126 // Display a system error message on the screen\r
 127 //\r
 128 /*void DisplaySysError(HWND hWnd)\r
 129 {\r
 130         FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL,\r
 131                 GetLastError(), 1024, pBuf, 0, NULL);\r
 132         MessageBox(hWnd, pBuf, errTitle, MB_ICONERROR);\r
 133         LocalFree(pBuf);\r
 134 }\r
 135 \r
 136 //\r
 137 // Create "live log" debug window\r
 138 //\r
 139 void CreateDebugWin(void)\r
 140 {\r
 141         WNDCLASS wc;\r
 142 \r
 143         RtlZeroMemory(&wc, sizeof(wc));\r
 144         wc.lpfnWndProc = DebugWinProc;\r
 145         wc.hInstance = GetModuleHandle(NULL);\r
 146         wc.hCursor = LoadCursor(NULL, IDC_ARROW);\r
 147         wc.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);\r
 148         wc.lpszClassName = CNDebug;\r
 149 \r
 150         if (!RegisterClass(&wc))\r
 151                 return;\r
 152 \r
 153         hDebugWnd = CreateWindowEx(NULL, CNDebug, debugWin,\r
 154                 WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_THICKFRAME | WS_MINIMIZEBOX | WS_SYSMENU,\r
 155                 0, 0, 400, 400, NULL, NULL, NULL, NULL);\r
 156 }\r
 157 \r
 158 //\r
 159 // Debug "live log" window procedure\r
 160 //\r
 161 LRESULT CALLBACK DebugWinProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)\r
 162 {\r
 163         switch (uMsg)\r
 164         {\r
 165         // *****************\r
 166         // *** WM_CREATE ***\r
 167         // *****************\r
 168 \r
 169         case WM_CREATE:\r
 170                 hEdit1 = CreateWindowEx(NULL, CNEdit, NULL,\r
 171                         WS_CHILD | WS_VISIBLE | WS_VSCROLL | ES_READONLY | ES_MULTILINE | ES_AUTOVSCROLL,\r
 172                         0, 0, 1, 1, hWnd, NULL, NULL, NULL);\r
 173                 break;\r
 174 \r
 175         // ******************\r
 176         // *** WM_DESTROY ***\r
 177         // ******************\r
 178 \r
 179         case WM_DESTROY:\r
 180                 hDebugWnd = NULL;                                               // Just in case user closes it himself...\r
 181                 break;\r
 182 \r
 183         // ***************\r
 184         // *** WM_SIZE ***\r
 185         // ***************\r
 186 \r
 187         case WM_SIZE:\r
 188                 SetWindowPos(hEdit1, NULL, 0, 0, lParam & 0xFFFF, lParam >> 16, SWP_NOMOVE | SWP_NOZORDER);\r
 189                 break;\r
 190 \r
 191         // *************************\r
 192         // *** USDB_WRITEMESSAGE ***\r
 193         // *************************\r
 194 \r
 195         case USDB_WRITEMESSAGE:\r
 196                 SendMessage(hEdit1, EM_SETSEL, -2, -2);\r
 197                 SendMessage(hEdit1, EM_REPLACESEL, wParam, lParam);\r
 198                 break;\r
 199 \r
 200         default:\r
 201                 return DefWindowProc(hWnd, uMsg, wParam, lParam);\r
 202         }\r
 203 \r
 204         return 0;\r
 205 }\r
 206 //*/\r