lib/util/strv_util.c

   1 /*
   2  * strv-based utilities
   3  *
   4  * Copyright Martin Schwenke <martin@meltin.net> 2016
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "replace.h"
  21
  22 #include <string.h>
  23 #include <talloc.h>
  24
  25 #include "strv.h"
  26
  27 #include "strv_util.h"
  28
  29 int strv_split(TALLOC_CTX *mem_ctx, char **strv,
  30                const char *src, const char *sep)
  31 {
  32         const char *s;
  33
  34         if (src == NULL) {
  35                 return 0;
  36         }
  37
  38         s = src;
  39         while (*s != '\0') {
  40                 size_t len;
  41
  42                 /* Skip separators */
  43                 len = strspn(s, sep);
  44                 if (len != 0) {
  45                         s += len;
  46                 }
  47
  48                 /* Find non-separator substring */
  49                 len = strcspn(s, sep);
  50                 if (len != 0) {
  51                         int ret = strv_addn(mem_ctx, strv, s, len);
  52                         if (ret != 0) {
  53                                 TALLOC_FREE(*strv);
  54                                 return ret;
  55                         }
  56                         s += len;
  57                 }
  58         }
  59
  60         return 0;
  61 }