libopkg/xregex.c

   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 "includes.h"
  19
  20 #include "xregex.h"
  21 #include "libbb/libbb.h"
  22
  23 static void print_regcomp_err(const regex_t *preg, int err);
  24
  25 int xregcomp(regex_t *preg, const char *regex, int cflags)
  26 {
  27     int err;
  28     err = regcomp(preg, regex, cflags);
  29     if (err) {
  30         print_regcomp_err(preg, err);
  31     }
  32
  33     return err;
  34 }
  35
  36 static void print_regcomp_err(const regex_t *preg, int err)
  37 {
  38     unsigned int size;
  39     char *error;
  40
  41     size = regerror(err, preg, 0, 0);
  42     error = xcalloc(1, size);
  43     regerror(err, preg, error, size);
  44
  45     opkg_msg(ERROR, "Internal error compiling regex: %s.", error);
  46
  47     free(error);
  48 }