Re: Help-flex digest, Vol 1 #50 - 2 msgs

[Nicola ONOSE]

> Example of my code is:
> extern Boolean eof1;
> extern Boolean eof2;
> FILE * fileptr1 = fopen("File1", "r");
> FILE * fileptr2 = fopen("File2", "r");
> while(!(eof1 || eof2)){
>   yyin=fileptr1;
>   yyparse();
>   fileptr1=yyin; //to store back the last left off point
>   yyin=fileptr2; //no effect??
>   yyparse();
>   fileptr2=yyin;
> }
> fclose(fileptr1);
> fclose(fileptr2);

 
Try yywrap().
A few weeks ago, I wrote a program that contained smth.
like this (and I had no problem):

/* yywrap () is called whenever an end of file is being reached */
int yywrap () {
   FILE *f = NULL;
   fclose (yyin);
   
   printf ("\nInput file :\"%s\"\n", FileList [uFileIndex++]);

   if ((char*)0 != FileList [uFileIndex]) {
      if ( NULL == (f = fopen (FileList [uFileIndex], "rt")) ) {      
  printf ("Cannot open file %s ", FileList [uFileIndex]);
  perror ("");
  exit (1);  
      }
      yyin = f;
   }
   return ((f)? 0: 1);
}


Nicola