/* concat3.c: concatenate three strings.

   Copyright 1992, 2008 Karl Berry.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   This library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this library; if not, see <http://www.gnu.org/licenses/>.  */

#include <kpathsea/config.h>


string
concat3 (const_string s1,  const_string s2,  const_string s3)
{
  int s2l = s2 ? strlen (s2) : 0;
  int s3l = s3 ? strlen (s3) : 0;
  string answer
      = (string) xmalloc (strlen(s1) + s2l + s3l + 1);
  strcpy (answer, s1);
  if (s2) strcat (answer, s2);
  if (s3) strcat (answer, s3);

  return answer;
}