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/****************************************************************************
* bfs *
* Copyright (C) 2022 Tavian Barnes <tavianator@tavianator.com> *
* *
* Permission to use, copy, modify, and/or distribute this software for any *
* purpose with or without fee is hereby granted. *
* *
* 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 "regex.h"
#include <stdlib.h>
int bfs_regcomp(regex_t *preg, const char *regex, int cflags, enum bfs_regex_type type) {
#if BFS_WITH_ONIGURUMA
// Oniguruma's POSIX wrapper uses the selected default syntax when REG_EXTENDED is set
cflags |= REG_EXTENDED;
switch (type) {
case BFS_REGEX_POSIX_BASIC:
onig_set_default_syntax(ONIG_SYNTAX_POSIX_BASIC);
break;
case BFS_REGEX_POSIX_EXTENDED:
onig_set_default_syntax(ONIG_SYNTAX_POSIX_EXTENDED);
break;
case BFS_REGEX_EMACS:
onig_set_default_syntax(ONIG_SYNTAX_EMACS);
break;
case BFS_REGEX_GREP:
onig_set_default_syntax(ONIG_SYNTAX_GREP);
break;
}
#else
switch (type) {
case BFS_REGEX_POSIX_BASIC:
cflags &= ~REG_EXTENDED;
break;
case BFS_REGEX_POSIX_EXTENDED:
cflags |= REG_EXTENDED;
break;
default:
return REG_BADPAT;
}
#endif
return regcomp(preg, regex, cflags);
}
char *bfs_regerror(int err, const regex_t *regex) {
size_t len = regerror(err, regex, NULL, 0);
char *str = malloc(len);
if (str) {
regerror(err, regex, str, len);
}
return str;
}
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