1/* vi: set sw=4 ts=4: */
2/*
3 * Utility routines.
4 *
5 * Copyright (C) many different people.
6 * If you wrote this, please acknowledge your work.
7 *
8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 */
10
11#include "libbb.h"
12#include "xregex.h"
13
14char* regcomp_or_errmsg(regex_t *preg, const char *regex, int cflags)
15{
16	int ret = regcomp(preg, regex, cflags);
17	if (ret) {
18		int errmsgsz = regerror(ret, preg, NULL, 0);
19		char *errmsg = xmalloc(errmsgsz);
20		regerror(ret, preg, errmsg, errmsgsz);
21		return errmsg;
22	}
23	return NULL;
24}
25
26void xregcomp(regex_t *preg, const char *regex, int cflags)
27{
28	char *errmsg = regcomp_or_errmsg(preg, regex, cflags);
29	if (errmsg) {
30		bb_error_msg_and_die("xregcomp: %s", errmsg);
31	}
32}
33