ceph/src/dpdk/lib/librte_eal/common/eal_common_string_fns.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <string.h>
  35 #include <stdio.h>
  36 #include <stdarg.h>
  37 #include <errno.h>
  38
  39 #include <rte_string_fns.h>
  40
  41 /* split string into tokens */
  42 int
  43 rte_strsplit(char *string, int stringlen,
  44              char **tokens, int maxtokens, char delim)
  45 {
  46         int i, tok = 0;
  47         int tokstart = 1; /* first token is right at start of string */
  48
  49         if (string == NULL || tokens == NULL)
  50                 goto einval_error;
  51
  52         for (i = 0; i < stringlen; i++) {
  53                 if (string[i] == '\0' || tok >= maxtokens)
  54                         break;
  55                 if (tokstart) {
  56                         tokstart = 0;
  57                         tokens[tok++] = &string[i];
  58                 }
  59                 if (string[i] == delim) {
  60                         string[i] = '\0';
  61                         tokstart = 1;
  62                 }
  63         }
  64         return tok;
  65
  66 einval_error:
  67         errno = EINVAL;
  68         return -1;
  69 }