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/* MIT License
*
* Copyright (c) 2018 John Schember
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* SPDX-License-Identifier: MIT
*/
#include "ares_private.h"
void ares__strsplit_free(char **elms, size_t num_elm)
{
size_t i;
if (elms == NULL) {
return;
}
for (i = 0; i < num_elm; i++) {
ares_free(elms[i]);
}
ares_free(elms);
}
char **ares__strsplit_duplicate(char **elms, size_t num_elm)
{
size_t i;
char **out;
if (elms == NULL || num_elm == 0) {
return NULL; /* LCOV_EXCL_LINE: DefensiveCoding */
}
out = ares_malloc_zero(sizeof(*elms) * num_elm);
if (out == NULL) {
return NULL; /* LCOV_EXCL_LINE: OutOfMemory */
}
for (i = 0; i < num_elm; i++) {
out[i] = ares_strdup(elms[i]);
if (out[i] == NULL) {
ares__strsplit_free(out, num_elm); /* LCOV_EXCL_LINE: OutOfMemory */
return NULL; /* LCOV_EXCL_LINE: OutOfMemory */
}
}
return out;
}
char **ares__strsplit(const char *in, const char *delms, size_t *num_elm)
{
ares_status_t status;
ares__buf_t *buf = NULL;
ares__llist_t *llist = NULL;
ares__llist_node_t *node;
char **out = NULL;
size_t cnt = 0;
size_t idx = 0;
if (in == NULL || delms == NULL || num_elm == NULL) {
return NULL; /* LCOV_EXCL_LINE: DefensiveCoding */
}
*num_elm = 0;
buf = ares__buf_create_const((const unsigned char *)in, ares_strlen(in));
if (buf == NULL) {
return NULL;
}
status = ares__buf_split(
buf, (const unsigned char *)delms, ares_strlen(delms),
ARES_BUF_SPLIT_NO_DUPLICATES | ARES_BUF_SPLIT_CASE_INSENSITIVE, 0, &llist);
if (status != ARES_SUCCESS) {
goto done;
}
cnt = ares__llist_len(llist);
if (cnt == 0) {
status = ARES_EFORMERR;
goto done;
}
out = ares_malloc_zero(cnt * sizeof(*out));
if (out == NULL) {
status = ARES_ENOMEM; /* LCOV_EXCL_LINE: OutOfMemory */
goto done; /* LCOV_EXCL_LINE: OutOfMemory */
}
for (node = ares__llist_node_first(llist); node != NULL;
node = ares__llist_node_next(node)) {
ares__buf_t *val = ares__llist_node_val(node);
char *temp = NULL;
status = ares__buf_fetch_str_dup(val, ares__buf_len(val), &temp);
if (status != ARES_SUCCESS) {
goto done;
}
out[idx++] = temp;
}
*num_elm = cnt;
status = ARES_SUCCESS;
done:
ares__llist_destroy(llist);
ares__buf_destroy(buf);
if (status != ARES_SUCCESS) {
ares__strsplit_free(out, cnt);
out = NULL;
}
return out;
}
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