/*
 * Copyright (c) 1995, 1996 Gunther Schadow.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include "pg_config.h"

IDENT("@(#) ansi-char.c (Gunther Schadow) 12/19/96");

#include "ansi.h"

int _as_getc(ASTRM *s)
{
  if(s->_flags & AS_IN)
    {
      if(s->_poi >= s->_end)
	if(_as_recv(s) == FAIL)
	  return FAIL;
      
      return *s->_poi++;
    }
  else
    {
      AS_ERROR(s, AS_EILL);
      return FAIL;
    }
}

int _as_putc(int c, ASTRM *s)
{
  if(s->_flags & AS_OUT)
    {
      if(s->_poi < s->_end)  
	goto putc;
      else
	if(_as_send(s) == FAIL)
	  return FAIL;
       
    putc:
      if(c == A_DLE)
	{
	  *s->_poi++ = A_DLE;
	  A_BCC(s->_bcc, c);
	}
	  
      *s->_poi++ = c;
      A_BCC(s->_bcc, c); 
      return c;
    }
  else
    {
      AS_ERROR(s, AS_EILL);
      return FAIL;
    }
}