libc/string/strncat.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program 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
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <string.h>
  20
  21 char *strncat (char *dest, char const *src, size_t count)
  22 {
  23         char *tmp = dest;
  24
  25         if (count > 0) {
  26                 while (*dest)
  27                         dest++;
  28
  29                 while ((*dest ++ = *src ++)) {
  30                         if (-- count == 0) {
  31                                 *dest = '\0';
  32
  33                                 break;
  34                         }
  35                 }
  36         }
  37
  38         return tmp;
  39 }