57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* getopt.h - a simple getopt(3) implementation.
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*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __GETOPT_H
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#define __GETOPT_H
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extern int opterr;
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extern int optind;
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extern int optopt;
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extern char *optarg;
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/*
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* Simple getopt(3) implementation.
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* This version of getopt does not take long options but should
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* otherwise behave like one expects.
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*
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* - It takes ':' in optstring for required arguments and '::'
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* for optional arguments.
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* - arguments can be followed directly by optargs (like -loptarg)
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* or in the next argv[] element (like -l optarg).
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* - arguments can be grouped together (like ls -alR)
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* - options can be mixed with nonoptions (like ls /bin -R)
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*/
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int getopt(int argc, char *argv[], const char *optstring);
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struct getopt_context {
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int opterr;
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int optind;
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int optopt;
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int nonopts;
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int optindex;
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char *optarg;
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};
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/*
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* We do not start a new process for each getopt() run, so we
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* need this function to save and restore the context.
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*/
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void getopt_context_store(struct getopt_context *ctx);
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void getopt_context_restore(struct getopt_context *ctx);
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#endif /* __GETOPT_H */
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