filecom.c

VC嵌入式CLips专家系统,实现战场环境的目标识别

/* DribbleOnCommand: H/L access routine   */
/*   for the dribble-on command.          */
/******************************************/
globle int DribbleOnCommand(
  void *theEnv)
  {
   char *fileName;

   if (EnvArgCountCheck(theEnv,"dribble-on",EXACTLY,1) == -1) return(FALSE);
   if ((fileName = GetFileName(theEnv,"dribble-on",1)) == NULL) return(FALSE);

   return (EnvDribbleOn(theEnv,fileName));
  }

/**********************************/
/* EnvDribbleOn: C access routine */
/*   for the dribble-on command.  */
/**********************************/
globle intBool EnvDribbleOn(
  void *theEnv,
  char *fileName)
  {
   /*==============================*/
   /* If a dribble file is already */
   /* open, then close it.         */
   /*==============================*/

   if (FileCommandData(theEnv)->DribbleFP != NULL)
     { EnvDribbleOff(theEnv); }

   /*========================*/
   /* Open the dribble file. */
   /*========================*/

   FileCommandData(theEnv)->DribbleFP = GenOpen(theEnv,fileName,"w");
   if (FileCommandData(theEnv)->DribbleFP == NULL)
     {
      OpenErrorMessage(theEnv,"dribble-on",fileName);
      return(0);
     }

   /*============================*/
   /* Create the dribble router. */
   /*============================*/

   EnvAddRouter(theEnv,"dribble", 40,
             FindDribble, PrintDribble,
             GetcDribble, UngetcDribble,
             ExitDribble);

   FileCommandData(theEnv)->DribbleCurrentPosition = 0;

   /*================================================*/
   /* Call the dribble status function. This is used */
   /* by some of the machine specific interfaces to  */
   /* do things such as changing the wording of menu */
   /* items from "Turn Dribble On..." to             */
   /* "Turn Dribble Off..."                          */
   /*================================================*/

   if (FileCommandData(theEnv)->DribbleStatusFunction != NULL)
     { (*FileCommandData(theEnv)->DribbleStatusFunction)(theEnv,TRUE); }

   /*=====================================*/
   /* Return TRUE to indicate the dribble */
   /* file was successfully opened.       */
   /*=====================================*/

   return(TRUE);
  }

/*************************************************/
/* EnvDribbleActive: Returns TRUE if the dribble */
/*   router is active, otherwise FALSE>          */
/*************************************************/
globle intBool EnvDribbleActive(
  void *theEnv)
  {
   if (FileCommandData(theEnv)->DribbleFP != NULL) return(TRUE);

   return(FALSE);
  }

/*******************************************/
/* DribbleOffCommand: H/L access  routine  */
/*   for the dribble-off command.          */
/*******************************************/
globle int DribbleOffCommand(
  void *theEnv)
  {
   if (EnvArgCountCheck(theEnv,"dribble-off",EXACTLY,0) == -1) return(FALSE);
   return(EnvDribbleOff(theEnv));
  }

/***********************************/
/* EnvDribbleOff: C access routine */
/*   for the dribble-off command.  */
/***********************************/
globle intBool EnvDribbleOff(
  void *theEnv)
  {
   int rv = 0;

   /*================================================*/
   /* Call the dribble status function. This is used */
   /* by some of the machine specific interfaces to  */
   /* do things such as changing the wording of menu */
   /* items from "Turn Dribble On..." to             */
   /* "Turn Dribble Off..."                          */
   /*================================================*/

   if (FileCommandData(theEnv)->DribbleStatusFunction != NULL)
     { (*FileCommandData(theEnv)->DribbleStatusFunction)(theEnv,FALSE); }

   /*=======================================*/
   /* Close the dribble file and deactivate */
   /* the dribble router.                   */
   /*=======================================*/

   if (FileCommandData(theEnv)->DribbleFP != NULL)
     {
      if (FileCommandData(theEnv)->DribbleCurrentPosition > 0)
        { fprintf(FileCommandData(theEnv)->DribbleFP,"%s",FileCommandData(theEnv)->DribbleBuffer); }
      EnvDeleteRouter(theEnv,"dribble");
      if (GenClose(theEnv,FileCommandData(theEnv)->DribbleFP) == 0) rv = 1;
     }
   else
     { rv = 1; }

   FileCommandData(theEnv)->DribbleFP = NULL;

   /*============================================*/
   /* Free the space used by the dribble buffer. */
   /*============================================*/

   if (FileCommandData(theEnv)->DribbleBuffer != NULL)
     {
      rm(theEnv,FileCommandData(theEnv)->DribbleBuffer,FileCommandData(theEnv)->DribbleMaximumPosition);
      FileCommandData(theEnv)->DribbleBuffer = NULL;
     }

   FileCommandData(theEnv)->DribbleCurrentPosition = 0;
   FileCommandData(theEnv)->DribbleMaximumPosition = 0;

   /*============================================*/
   /* Return TRUE if the dribble file was closed */
   /* without error, otherwise return FALSE.     */
   /*============================================*/

   return(rv);
  }

/*****************************************************/
/* SetDribbleStatusFunction: Sets the function which */
/*   is called whenever the dribble router is turned */
/*   on or off.                                      */
/*****************************************************/
globle void SetDribbleStatusFunction(
  void *theEnv,
  int (*fnptr)(void *,int))
  {
   FileCommandData(theEnv)->DribbleStatusFunction = fnptr;
  }
#endif

/*************************************************/
/* FindBatch: Find routine for the batch router. */
/*************************************************/
#if IBM_TBC
#pragma argsused
#endif
static int FindBatch(
  void *theEnv,
  char *logicalName)
  {
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(theEnv)
#endif

   if (strcmp(logicalName,"stdin") == 0)
     { return(TRUE); }

   return(FALSE);
  }

/*************************************************/
/* GetcBatch: Getc routine for the batch router. */
/*************************************************/
static int GetcBatch(
  void *theEnv,
  char *logicalName)
  {
   return(LLGetcBatch(theEnv,logicalName,FALSE));
  }

/***************************************************/
/* LLGetcBatch: Lower level routine for retrieving */
/*   a character when a batch file is active.      */
/***************************************************/
globle int LLGetcBatch(
  void *theEnv,
  char *logicalName,
  int returnOnEOF)
  {
   int rv = EOF, flag = 1;

   /*=================================================*/
   /* Get a character until a valid character appears */
   /* or no more batch files are left.                */
   /*=================================================*/

   while ((rv == EOF) && (flag == 1))
     {
      if (FileCommandData(theEnv)->BatchType == FILE_BATCH)
        { rv = getc((FILE *) FileCommandData(theEnv)->BatchSource); } 
      else
        { rv = EnvGetcRouter(theEnv,(char *) FileCommandData(theEnv)->BatchSource); }

      if (rv == EOF)
        {
         if (FileCommandData(theEnv)->BatchCurrentPosition > 0) EnvPrintRouter(theEnv,"stdout",(char *) FileCommandData(theEnv)->BatchBuffer);
         flag = RemoveBatch(theEnv);
        }
     }

   /*=========================================================*/
   /* If the character retrieved is an end-of-file character, */
   /* then there are no batch files with character input      */
   /* remaining. Remove the batch router.                     */
   /*=========================================================*/

   if (rv == EOF)
     {
      if (FileCommandData(theEnv)->BatchCurrentPosition > 0) EnvPrintRouter(theEnv,"stdout",(char *) FileCommandData(theEnv)->BatchBuffer);
      EnvDeleteRouter(theEnv,"batch");
      RemoveBatch(theEnv);
      if (returnOnEOF == TRUE)
        { return (EOF); }
      else
        { return(EnvGetcRouter(theEnv,logicalName)); }
     }

   /*========================================*/
   /* Add the character to the batch buffer. */
   /*========================================*/

   FileCommandData(theEnv)->BatchBuffer = ExpandStringWithChar(theEnv,(char) rv,FileCommandData(theEnv)->BatchBuffer,&FileCommandData(theEnv)->BatchCurrentPosition,
                                      &FileCommandData(theEnv)->BatchMaximumPosition,FileCommandData(theEnv)->BatchMaximumPosition+BUFFER_SIZE);

   /*======================================*/
   /* If a carriage return is encountered, */
   /* then flush the batch buffer.         */
   /*======================================*/

   if ((char) rv == '\n')
     {
      EnvPrintRouter(theEnv,"stdout",(char *) FileCommandData(theEnv)->BatchBuffer);
      FileCommandData(theEnv)->BatchCurrentPosition = 0;
      if ((FileCommandData(theEnv)->BatchBuffer != NULL) && (FileCommandData(theEnv)->BatchMaximumPosition > BUFFER_SIZE))
        {
         rm(theEnv,FileCommandData(theEnv)->BatchBuffer,FileCommandData(theEnv)->BatchMaximumPosition);
         FileCommandData(theEnv)->BatchMaximumPosition = 0;
         FileCommandData(theEnv)->BatchBuffer = NULL;
        }
     }

   /*=====================================================*/
   /* Return the character retrieved from the batch file. */
   /*=====================================================*/

   return(rv);
  }

/*****************************************************/
/* UngetcBatch: Ungetc routine for the batch router. */
/*****************************************************/
#if IBM_TBC
#pragma argsused
#endif
static int UngetcBatch(
  void *theEnv,
  int ch,
  char *logicalName)
  {
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(logicalName)
#endif

   if (FileCommandData(theEnv)->BatchCurrentPosition > 0) FileCommandData(theEnv)->BatchCurrentPosition--;
   if (FileCommandData(theEnv)->BatchBuffer != NULL) FileCommandData(theEnv)->BatchBuffer[FileCommandData(theEnv)->BatchCurrentPosition] = EOS;
   if (FileCommandData(theEnv)->BatchType == FILE_BATCH)
     { return(ungetc(ch,(FILE *) FileCommandData(theEnv)->BatchSource)); }

   return(EnvUngetcRouter(theEnv,ch,(char *) FileCommandData(theEnv)->BatchSource));
  }

/*************************************************/
/* ExitBatch: Exit routine for the batch router. */
/*************************************************/
#if IBM_TBC
#pragma argsused
#endif
static int ExitBatch(
  void *theEnv,
  int num)
  {
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(num)
#endif
   CloseAllBatchSources(theEnv);
   return(1);
  }

/**************************************/
/* BatchCommand: H/L access routine   */
/*   for the batch command.           */
/**************************************/
globle int BatchCommand(
  void *theEnv)
  {
   char *fileName;

   if (EnvArgCountCheck(theEnv,"batch",EXACTLY,1) == -1) return(FALSE);
   if ((fileName = GetFileName(theEnv,"batch",1)) == NULL) return(FALSE);

   return(OpenBatch(theEnv,fileName,FALSE));
  }

/**************************************************/
/* Batch: C access routine for the batch command. */
/**************************************************/
globle int Batch(
  void *theEnv,
  char *fileName)
  { return(OpenBatch(theEnv,fileName,FALSE)); }

/***********************************************/
/* OpenBatch: Adds a file to the list of files */
/*   opened with the batch command.            */
/***********************************************/
globle int OpenBatch(
  void *theEnv,
  char *fileName,
  int placeAtEnd)
  {
   FILE *theFile;

   /*======================*/
   /* Open the batch file. */
   /*======================*/

   theFile = GenOpen(theEnv,fileName,"r");

   if (theFile == NULL)
     {
      OpenErrorMessage(theEnv,"batch",fileName);
      return(FALSE);
     }

   /*============================*/
   /* Create the batch router if */
   /* it doesn't already exist.  */
   /*============================*/

   if (FileCommandData(theEnv)->TopOfBatchList == NULL)
     {
      EnvAddRouter(theEnv,"batch", 20,
                 FindBatch, NULL,
                 GetcBatch, UngetcBatch,
                 ExitBatch);
     }

   /*====================================*/
   /* Add the newly opened batch file to */
   /* the list of batch files opened.    */
   /*====================================*/

   AddBatch(theEnv,placeAtEnd,(void *) theFile,FILE_BATCH,NULL);

   /*===================================*/
   /* Return TRUE to indicate the batch */
   /* file was successfully opened.     */
   /*===================================*/

   return(TRUE);
  }

/*****************************************************************/