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 "xregex.h"
  19 #include "libbb/libbb.h"
  20
  21 static void print_regcomp_err(const regex_t * preg, int err);
  22
  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
  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 }