/* $Id: $ */

/* Copyright (C) 1997 Sverre Hvammen Johansen,
 * Department of Informatics, University of Oslo.
 *
 * 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; version 2.
 *
 * 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 "text.h"

/******************************************************************************
                                   INTEGER PROCEDURE GETINT (text attributt) */

long 
__rtgetint (t)
     __txtvp t;
{
  char *s;
  int sign;
  long i,
    j,
    n = 0;

  s = t->obj->string;
  i = t->start - 1;
  j = i + t->length;

  skipblanke;
  if (!more)
    __rerror ("Getint: Can't find any integer item");
  sign = fortegn;
  if (sign)
    i++;
  else
    sign = 1;
  skipblanke;
  if (!more)
    __rerror ("Getint: Can't find any integer item");
  if (!digit)
    __rerror ("Getint: Can't find any integer item");
  for (; more && digit; i++)
    {
      if (n > MAX_INT / 10)
	goto forstort;
      if (n == MAX_INT / 10)
	if ((s[i] - '0') > MAX_INT % 10)
	  goto forstort;
      n = 10 * n + s[i] - '0';
    }
  t->pos = i - t->start + 2;
  return (sign * n);
forstort:
  __rwarning ("Getint: To big integer item");
  return (sign * n);
}