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 tarball for details.
   9 */
  10
  11#include "libbb.h"
  12#include "xregex.h"
  13
  14char* FAST_FUNC 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 FAST_FUNC 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("bad regex '%s': %s", regex, errmsg);
  31        }
  32}
  33