source/texk/kpathsea/concat3.c

   1 /* concat3.c: concatenate three strings.
   2
   3    Copyright 1992, 2008 Karl Berry.
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    This library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this library; if not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <kpathsea/config.h>
  19
  20
  21 string
  22 concat3 (const_string s1,  const_string s2,  const_string s3)
  23 {
  24   int s2l = s2 ? strlen (s2) : 0;
  25   int s3l = s3 ? strlen (s3) : 0;
  26   string answer
  27       = (string) xmalloc (strlen(s1) + s2l + s3l + 1);
  28   strcpy (answer, s1);
  29   if (s2) strcat (answer, s2);
  30   if (s3) strcat (answer, s3);
  31
  32   return answer;
  33 }