util/nvramtool/reg_expr.c

   1 /*****************************************************************************\
   2  * reg_expr.c
   3  *****************************************************************************
   4  *  Please also read the file DISCLAIMER which is included in this software
   5  *  distribution.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify it
   8  *  under the terms of the GNU General Public License (as published by the
   9  *  Free Software Foundation) version 2, dated June 1991.
  10  *
  11  *  This program is distributed in the hope that it will be useful, but
  12  *  WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the terms and
  14  *  conditions of the GNU General Public License for more details.
  15 \*****************************************************************************/
  16
  17 #include <stdarg.h>
  18 #include "common.h"
  19 #include "reg_expr.h"
  20
  21 /****************************************************************************
  22  * compile_reg_expr
  23  *
  24  * Compile a regular expression.
  25  ****************************************************************************/
  26 void compile_reg_expr(int cflags, const char *expr, regex_t *reg)
  27 {
  28         static const size_t ERROR_BUF_SIZE = 256;
  29         char error_msg[ERROR_BUF_SIZE];
  30         int result;
  31
  32         if ((result = regcomp(reg, expr, cflags)) != 0) {
  33                 regerror(result, reg, error_msg, ERROR_BUF_SIZE);
  34                 fprintf(stderr, "%s: %s\n", prog_name, error_msg);
  35                 exit(1);
  36         }
  37 }