LXR busybox/libbb/xregcomp.c

   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 source tree.
   9 */
  10#include "libbb.h"
  11#include "xregex.h"
  12
  13char* FAST_FUNC regcomp_or_errmsg(regex_t *preg, const char *regex, int cflags)
  14{
  15        int ret = regcomp(preg, regex, cflags);
  16        if (ret) {
  17                int errmsgsz = regerror(ret, preg, NULL, 0);
  18                char *errmsg = xmalloc(errmsgsz);
  19                regerror(ret, preg, errmsg, errmsgsz);
  20                return errmsg;
  21        }
  22        return NULL;
  23}
  24
  25void FAST_FUNC xregcomp(regex_t *preg, const char *regex, int cflags)
  26{
  27        char *errmsg = regcomp_or_errmsg(preg, regex, cflags);
  28        if (errmsg) {
  29                bb_error_msg_and_die("bad regex '%s': %s", regex, errmsg);
  30        }
  31}
  32