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/* $OpenBSD: path.c,v 1.6 2015/05/22 13:48:25 jsg Exp $ */
/*
* Copyright (c) 2013 Kurt Miller <kurt@intricatesoftware.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include "path.h"
#include "util.h"
char **
_dl_split_path(const char *searchpath)
{
int pos = 0;
int count = 1;
const char *pp, *p_begin;
char **retval;
if (searchpath == NULL)
return (NULL);
/* Count ':' or ';' in searchpath */
pp = searchpath;
while (*pp) {
if (*pp == ':' || *pp == ';')
count++;
pp++;
}
/* one more for NULL entry */
count++;
retval = _dl_reallocarray(NULL, count, sizeof(*retval));
if (retval == NULL)
return (NULL);
pp = searchpath;
while (pp) {
p_begin = pp;
while (*pp != '\0' && *pp != ':' && *pp != ';')
pp++;
/* interpret "" as curdir "." */
if (p_begin == pp) {
retval[pos] = _dl_malloc(2);
if (retval[pos] == NULL)
goto badret;
_dl_bcopy(".", retval[pos++], 2);
} else {
retval[pos] = _dl_malloc(pp - p_begin + 1);
if (retval[pos] == NULL)
goto badret;
_dl_bcopy(p_begin, retval[pos], pp - p_begin);
retval[pos++][pp - p_begin] = '\0';
}
if (*pp) /* Try curdir if ':' at end */
pp++;
else
pp = NULL;
}
retval[pos] = NULL;
return (retval);
badret:
_dl_free_path(retval);
return (NULL);
}
void
_dl_free_path(char **path)
{
char **p = path;
if (path == NULL)
return;
while (*p != NULL)
_dl_free(*p++);
_dl_free(path);
}
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