1 /* xregex.c - regex functions with error messages
2
3 Carl D. Worth
4
5 Copyright (C) 2001 University of Southern California
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16 */
17
18 #include "xregex.h"
19 #include "libbb/libbb.h"
20
21 static void print_regcomp_err(const regex_t * preg, int err);
22
xregcomp(regex_t * preg,const char * regex,int cflags)23 int xregcomp(regex_t * preg, const char *regex, int cflags)
24 {
25 int err;
26 err = regcomp(preg, regex, cflags);
27 if (err) {
28 print_regcomp_err(preg, err);
29 }
30
31 return err;
32 }
33
print_regcomp_err(const regex_t * preg,int err)34 static void print_regcomp_err(const regex_t * preg, int err)
35 {
36 unsigned int size;
37 char *error;
38
39 size = regerror(err, preg, 0, 0);
40 error = xcalloc(1, size);
41 regerror(err, preg, error, size);
42
43 opkg_msg(ERROR, "Internal error compiling regex: %s.", error);
44
45 free(error);
46 }
47