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/*
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 * Copyright 2008-2011 Various Authors
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 * Copyright 2005 Timo Hirvonen
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License as
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 * published by the Free Software Foundation; either version 2 of the
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 * License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but
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 * WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef PROG_H
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#define PROG_H
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#include "compiler.h"
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/* set in beginning of main */
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extern char *program_name;
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struct option {
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	/* short option or 0 */
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	int short_opt;
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	/* long option or NULL */
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	const char *long_opt;
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	/* does option have an argument */
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	int has_arg;
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};
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/*
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 * arg: returned argument if .has_arg is 1
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 *
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 * returns: index to options array or -1 of no more options
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 */
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int get_option(char **argv[], const struct option *options, char **arg);
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void warn(const char *format, ...) __FORMAT(1, 2);
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void warn_errno(const char *format, ...) __FORMAT(1, 2);
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void die(const char *format, ...) __FORMAT(1, 2) __NORETURN;
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void die_errno(const char *format, ...) __FORMAT(1, 2) __NORETURN;
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#endif