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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include "util.h"
char **split_argv(char *str)
{
size_t i = 0, cap = 0, new_cap;
char **argv = NULL, **new;
char *ptr;
ptr = str;
for (;;) {
if (*ptr == ' ') {
++ptr;
continue;
}
if (i == cap) {
new_cap = cap ? cap * 2 : 16;
new = realloc(argv, sizeof(argv[0]) * new_cap);
if (new == NULL) {
free(argv);
errno = ENOMEM;
return NULL;
}
cap = new_cap;
argv = new;
}
if (*ptr == '\0') {
argv[i++] = NULL;
break;
}
argv[i++] = ptr;
if (*ptr == '"') {
++ptr;
while (*ptr != '\0' && *ptr != '"') {
if (ptr[0] == '\\' && ptr[1] != '\0')
++ptr;
++ptr;
}
if (*ptr == '"')
++ptr;
if (*ptr == ' ') {
*(ptr++) = '\0';
} else if (*ptr != '\0') {
goto fail_str;
}
if (unescape(argv[i - 1]))
goto fail_str;
} else {
while (*ptr != '\0' && *ptr != ' ')
++ptr;
if (*ptr == ' ')
*(ptr++) = '\0';
}
}
return argv;
fail_str:
free(argv);
errno = EINVAL;
return NULL;
}
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