util/nvramtool/reg_expr.c

   1 /*****************************************************************************\
   2  * reg_expr.c
   3  *****************************************************************************
   4  *  Copyright (C) 2002-2005 The Regents of the University of California.
   5  *  Produced at the Lawrence Livermore National Laboratory.
   6  *  Written by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
   7  *  UCRL-CODE-2003-012
   8  *  All rights reserved.
   9  *
  10  *  This file is part of nvramtool, a utility for reading/writing coreboot
  11  *  parameters and displaying information from the coreboot table.
  12  *  For details, see https://coreboot.org/nvramtool.
  13  *
  14  *  Please also read the file DISCLAIMER which is included in this software
  15  *  distribution.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify it
  18  *  under the terms of the GNU General Public License (as published by the
  19  *  Free Software Foundation) version 2, dated June 1991.
  20  *
  21  *  This program is distributed in the hope that it will be useful, but
  22  *  WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
  23  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the terms and
  24  *  conditions of the GNU General Public License for more details.
  25 \*****************************************************************************/
  26
  27 #include <stdarg.h>
  28 #include "common.h"
  29 #include "reg_expr.h"
  30
  31 /****************************************************************************
  32  * compile_reg_expr
  33  *
  34  * Compile a regular expression.
  35  ****************************************************************************/
  36 void compile_reg_expr(int cflags, const char *expr, regex_t *reg)
  37 {
  38         static const size_t ERROR_BUF_SIZE = 256;
  39         char error_msg[ERROR_BUF_SIZE];
  40         int result;
  41
  42         if ((result = regcomp(reg, expr, cflags)) != 0) {
  43                 regerror(result, reg, error_msg, ERROR_BUF_SIZE);
  44                 fprintf(stderr, "%s: %s\n", prog_name, error_msg);
  45                 exit(1);
  46         }
  47 }