//------------------------------------------------------------------
// This is a utility that will remove all the carriage returns 
// (ascii code 13--looks like ^M) from a file that was accidentally
// uploaded using binary instead of ascii mode.
//
// usage: remcr <file>
//
// Sample:
//      remcr addrspace.cc
//      ;now a file called addrspace.cc.fixed is made with no CRs
//
// To compile: gcc remcr.cc -o remcr
//
// Designed by Will Page and Ryan Cunningham for CSCI402 (c) 2003
// University of Southern California
// Updated: 25.Feb.03
//------------------------------------------------------------------

#include <stdio.h>
#include <string.h>

int main(int argc, char **argv)
{
 FILE *in, *out;
 char outname[100];
 int errval = 0, inchar;

 argv++;			// look at filename
 if(in = fopen(*argv,"r"))
 {
  strcpy(outname, *argv);
  strcat(outname, ".fixed");	// filename + .fixed
  if(out = fopen(outname, "w"))
  { 
   inchar = fgetc(in);
   while(!feof(in))
   {
    if(inchar != 13) 
     fputc(inchar, out);
    inchar = fgetc(in);
   }
  }
  else
  {
   printf("ERROR: couldn't open %s for writing.\n",outname);
   errval = -2;
  }
 }
 else
 {
  printf("ERROR: couldn't open %s for reading.\n",*argv);
  errval = -1;
 }
 return errval;
}