/* log.cpp - Don Yang (uguu.org)

   See log.h for macros.

   12/21/00
                                                                           */

#include"global.h"
#include"log.h"
#include"resource.h"


static FILE *LogFile = NULL;

/***************************************************************** LogMalloc
   Log memory allocation (does nothing in release build).                  */
void *LogMalloc(char *file, int line, size_t size)
{
#ifndef NODEBUG
   char text[256];
   void *ptr;

   ptr = malloc(size);
   sprintf(text, "0x%08x = malloc(%u)", (unsigned int)ptr, size);
   WriteLog(file, line, text);
   return ptr;

#else
   return NULL;
#endif

} // LogMalloc()

/******************************************************************* LogFree
   Log memory release (does nothing in release build).                     */
void LogFree(char *file, int line, void *ptr)
{
#ifndef NODEBUG
   char text[256];

   sprintf(text, "free(0x%08x)", (unsigned int)ptr);
   WriteLog(file, line, text);
   free(ptr);
#endif

} // LogFree()

/****************************************************************** StartLog
   Start logging events (does nothing in release build).                   */
BOOL StartLog(void)
{

#ifndef NODEBUG
   if( (LogFile = fopen(LOG_FILE_NAME, "at+")) == NULL )
   {
      if( (LogFile = fopen(LOG_FILE_NAME, "wt+")) == NULL )
         return FALSE;
   }

   LogMessage(APP_VERSION ": " __TIME__ " " __DATE__);
#endif

   return TRUE;

} // StartLog()

/******************************************************************* StopLog
   Stop logging events (does nothing in release build).                    */
void StopLog(void)
{

#ifndef NODEBUG
   if( LogFile != NULL )
   {
      LogMessage("exit.\n");
      fclose(LogFile);
      LogFile = NULL;
   }
#endif

} // StopLog()

/****************************************************************** WriteLog
   Log event (does nothing in release build).                              */
void WriteLog(char *file, int line, char *text)
{
#ifndef NODEBUG
   time_t gtime;
   struct tm *ltime;

   time(&gtime);
   ltime = localtime(&gtime);
   if( LogFile != NULL && text != NULL )
      fprintf(LogFile, "%.24s:%s:%d: %s\n", asctime(ltime), file, line, text);
#endif

} // WriteLog()

/***************************************************************** WriteLogN
   Log event with numeric parameter (does nothing in release build).       */
void WriteLogN(char *file, int line, char *text, int number)
{
#ifndef NODEBUG
   char string[256];

   sprintf(string, text, number);
   WriteLog(file, line, string);
#endif

} // WriteLogN()


char *LogObjTime = __TIME__ " " __DATE__;
int LogObjLines = __LINE__;