DEBUG.C

//==========================================================================; 
// 
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR 
//  PURPOSE. 
// 
//  Copyright 1992 - 1998 Microsoft Corporation.  All Rights Reserved. 
// 
//--------------------------------------------------------------------------; 
// 
//  debug.c 
// 
//  Description: 
//      This file contains code yanked from several places to provide debug 
//      support that works in win 16 and win 32. 
// 
// 
//==========================================================================; 
 
#ifdef DEBUG 
#include <windows.h> 
#include <windowsx.h> 
#include <mmsystem.h> 
#include <stdarg.h> 
#include "debug.h" 
 
BOOL    __gfDbgEnabled          = TRUE;         // master enable 
UINT    __guDbgLevel            = 0;            // current debug level 
 
 
//--------------------------------------------------------------------------; 
// 
//  void DbgVPrintF 
// 
//  Description: 
// 
// 
//  Arguments: 
//      LPSTR szFormat: 
// 
//      va_list va: 
// 
//  Return (void): 
//      No value is returned. 
// 
//--------------------------------------------------------------------------; 
 
void FAR CDECL DbgVPrintF 
( 
    LPSTR                   szFormat, 
    va_list                 va 
) 
{ 
    char                ach[DEBUG_MAX_LINE_LEN]; 
    BOOL                fDebugBreak = FALSE; 
    BOOL                fPrefix     = TRUE; 
    BOOL                fCRLF       = TRUE; 
 
    ach[0] = '\0'; 
 
    for (;;) 
    { 
        switch (*szFormat) 
        { 
            case '!': 
                fDebugBreak = TRUE; 
                szFormat++; 
                continue; 
 
            case '`': 
                fPrefix = FALSE; 
                szFormat++; 
                continue; 
 
            case '~': 
                fCRLF = FALSE; 
                szFormat++; 
                continue; 
        } 
 
        break; 
    } 
 
    if (fDebugBreak) 
    { 
        ach[0] = '\007'; 
        ach[1] = '\0'; 
    } 
 
    if (fPrefix) 
    { 
        lstrcatA(ach, DEBUG_MODULE_NAME ": "); 
    } 
 
    wvsprintfA(ach + lstrlenA(ach), szFormat, va); 
 
    if (fCRLF) 
    { 
        lstrcatA(ach, "\r\n"); 
    } 
 
    OutputDebugStringA(ach); 
 
    if (fDebugBreak) 
    { 
        DebugBreak(); 
    } 
} // DbgVPrintF() 
 
 
//--------------------------------------------------------------------------; 
// 
//  void dprintf 
// 
//  Description: 
//      dprintf() is called by the DPF() macro if DEBUG is defined at compile 
//      time. It is recommended that you only use the DPF() macro to call 
//      this function--so you don't have to put #ifdef DEBUG around all 
//      of your code. 
// 
//  Arguments: 
//      UINT uDbgLevel: 
// 
//      LPSTR szFormat: 
// 
//  Return (void): 
//      No value is returned. 
// 
//--------------------------------------------------------------------------; 
 
void FAR CDECL dprintf 
( 
    UINT                    uDbgLevel, 
    LPSTR                   szFormat, 
    ... 
) 
{ 
    va_list va; 
 
    if (!__gfDbgEnabled || (__guDbgLevel < uDbgLevel)) 
        return; 
 
    va_start(va, szFormat); 
    DbgVPrintF(szFormat, va); 
    va_end(va); 
} // dprintf() 
 
 
//--------------------------------------------------------------------------; 
// 
//  BOOL DbgEnable 
// 
//  Description: 
// 
// 
//  Arguments: 
//      BOOL fEnable: 
// 
//  Return (BOOL): 
//      Returns the previous debugging state. 
// 
//--------------------------------------------------------------------------; 
 
BOOL WINAPI DbgEnable 
( 
    BOOL                    fEnable 
) 
{ 
    BOOL                fOldState; 
 
    fOldState      = __gfDbgEnabled; 
    __gfDbgEnabled = fEnable; 
 
    return (fOldState); 
} // DbgEnable() 
 
 
//--------------------------------------------------------------------------; 
// 
//  UINT DbgSetLevel 
// 
//  Description: 
// 
// 
//  Arguments: 
//      UINT uLevel: 
// 
//  Return (UINT): 
//      Returns the previous debugging level. 
// 
//--------------------------------------------------------------------------; 
 
UINT WINAPI DbgSetLevel 
( 
    UINT                    uLevel 
) 
{ 
    UINT                uOldLevel; 
 
    uOldLevel    = __guDbgLevel; 
    __guDbgLevel = uLevel; 
 
    return (uOldLevel); 
} // DbgSetLevel() 
 
 
//--------------------------------------------------------------------------; 
// 
//  UINT DbgGetLevel 
// 
//  Description: 
// 
// 
//  Arguments: 
//      None. 
// 
//  Return (UINT): 
//      Returns the current debugging level. 
// 
//--------------------------------------------------------------------------; 
 
UINT WINAPI DbgGetLevel 
( 
    void 
) 
{ 
    return (__guDbgLevel); 
} // DbgGetLevel() 
 
 
//--------------------------------------------------------------------------; 
// 
//  UINT DbgInitialize 
// 
//  Description: 
// 
// 
//  Arguments: 
//      BOOL fEnable: 
// 
//  Return (UINT): 
//      Returns the debugging level that was set. 
// 
//--------------------------------------------------------------------------; 
 
UINT WINAPI DbgInitialize 
( 
    BOOL                    fEnable 
) 
{ 
    UINT                uLevel; 
 
    uLevel = GetProfileIntA(DEBUG_SECTION, DEBUG_MODULE_NAME, (UINT)-1); 
    if ((UINT)-1 == uLevel) 
    { 
        // 
        //  if the debug key is not present, then force debug output to 
        //  be disabled. this way running a debug version of a component 
        //  on a non-debugging machine will not generate output unless 
        //  the debug key exists. 
        // 
        uLevel  = 0; 
        fEnable = FALSE; 
    } 
 
    DbgSetLevel(uLevel); 
    DbgEnable(fEnable); 
 
    return (__guDbgLevel); 
} // DbgInitialize() 
 
#endif // #ifdef DEBUG