crypto/external/bsd/heimdal/dist/lib/roken/strsep_copy.c

   1 /*      $NetBSD: strsep_copy.c,v 1.1.1.2 2014/04/24 12:45:52 pettai Exp $       */
   2
   3 /*
   4  * Copyright (c) 2000, 2002 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <config.h>
  37
  38 #include <string.h>
  39
  40 #include <krb5/roken.h>
  41
  42 #ifndef HAVE_STRSEP_COPY
  43
  44 /* strsep, but with const stringp, so return string in buf */
  45
  46 ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
  47 strsep_copy(const char **stringp, const char *delim, char *buf, size_t len)
  48 {
  49     const char *save = *stringp;
  50     size_t l;
  51     if(save == NULL)
  52         return -1;
  53     *stringp = *stringp + strcspn(*stringp, delim);
  54     l = min(len, (size_t)(*stringp - save));
  55     if(len > 0) {
  56         memcpy(buf, save, l);
  57         buf[l] = '\0';
  58     }
  59
  60     l = *stringp - save;
  61     if(**stringp == '\0')
  62         *stringp = NULL;
  63     else
  64         (*stringp)++;
  65     return l;
  66 }
  67
  68 #endif