Source file: /~heha/hsn/borg.zip/DEBUG.CPP

/************************************************************************
*		    debug.cpp						*
* NB change the path and name of the debugfile in debug.h before using	*
* the debug functions. To enable debug functions change the commented	*
* line in the debug.f header file. Warning - debug files can get very	*
* big quite quickly. I only use them for hard to finc bugs.		*
* One alternative is just to call the DebugMessage function at any	*
* point without using #ifdef DEBUG.... and then you'll get a smaller	*
* file referencing the area you are interested in. (Or just use		*
* Messageboxes for real small bugfinding.... Anyway, the functions are	*
* there should they be required. Eugen Polukhin had suggested using a	*
* second screen for the debug messages, with the ability to switch	*
* between the two with a keypress. It looked good, but in reality it's	*
* not as useful because most bugs I would use this for are fatal...	*
************************************************************************/

#include <windows.h>
#include "debug.h"
#include "dasm.h"

/************************************************************************
* DebugMessage								*
* - this is the only function. It opens the debug file if it isnt open	*
*   already - see the debug.h file for the full name of it, as I have	*
*   it set. If you use this function then you'll need to change it.	*
* - DebugMessages are appended to the debug file.			*
* - The function can be used as wvsprintf is used, with any number of	*
*   arguments. See the scheduler for many examples of its use		*
************************************************************************/
void DebugMessage(char *szFormat,...) {
 char DebugBuff[200];
 HANDLE efile;
 dword num;
 va_list vaArgs;
 va_start(vaArgs,szFormat);
 int len=wvsprintf(DebugBuff,szFormat,vaArgs);
 va_end(vaArgs);
 efile=CreateFile(DEBUGFILE,GENERIC_WRITE,0,NULL,OPEN_ALWAYS,0,NULL);
 if (efile==INVALID_HANDLE_VALUE) {
  MessageBox(MainWnd,"Debug File Creation Failed","Borg Disassembler Alert",MB_OK);
  return;
 }
 SetFilePointer(efile,0,0,FILE_END);
 WriteFile(efile,DebugBuff,len,&num,NULL);
 WriteFile(efile,"\r\n",2,&num,NULL);
 CloseHandle(efile);
}

/************************************************************************
* ShowLastError								*
* - Can be called to show windows error messages, decoded		*
************************************************************************/
void ShowLastError(void) {
 LPTSTR lpMsgBuf;
 FormatMessage(
   FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
   NULL,
   GetLastError(),
   MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
   (LPTSTR) &lpMsgBuf,
   0,
   NULL);
 MessageBox(MainWnd,lpMsgBuf,"Borg Error Message",MB_OK);
 LocalFree(lpMsgBuf);
}