daemon/catdup.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
   6  *
   7  **************************************************************************
   8  * This file contains implementation of the catdup() function
   9  **************************************************************************
  10  *
  11  * LADI Session Handler is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * LADI Session Handler is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  23  * or write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <assert.h>
  30
  31 #include "../common/debug.h"
  32 #include "catdup.h"
  33
  34 char * catdup(const char * s1, const char * s2)
  35 {
  36   char * buffer;
  37   size_t s1_len, s2_len;
  38
  39   assert(s1 != NULL && s2 != NULL);
  40
  41   s1_len = strlen(s1);
  42   s2_len = strlen(s2);
  43
  44   buffer = malloc(s1_len + s2_len + 1);
  45   if (buffer == NULL)
  46   {
  47     lash_error("malloc() failed.");
  48     return NULL;
  49   }
  50
  51   memcpy(buffer, s1, s1_len);
  52   memcpy(buffer + s1_len, s2, s2_len);
  53   buffer[s1_len + s2_len] = 0;
  54
  55   return buffer;
  56 }