/*	$OpenBSD: getopt_long.c,v 1.29 2015/10/01 02:32:07 guenther Exp $	*/

/*	$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $	*/

/*

 * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 *

 * Sponsored in part by the Defense Advanced Research Projects

 * Agency (DARPA) and Air Force Research Laboratory, Air Force

 * Materiel Command, USAF, under agreement number F39502-99-1-0512.

 */

/*-

 * Copyright (c) 2000 The NetBSD Foundation, Inc.

 * All rights reserved.

 *

 * This code is derived from software contributed to The NetBSD Foundation

 * by Dieter Baron and Thomas Klausner.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS

 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#include <err.h>

#include <errno.h>

#include <getopt.h>

#include <stdlib.h>

#include <string.h>

int	opterr = 1;		/* if error message should be printed */

int	optind = 1;		/* index into parent argv vector */

int	optopt = '?';		/* character checked for validity */

int	optreset;		/* reset getopt */

char    *optarg;		/* argument associated with option */

#if 0

/* DEF_* only work on initialized (non-COMMON) variables */

DEF_WEAK(opterr);

DEF_WEAK(optind);

DEF_WEAK(optopt);

#endif

#define PRINT_ERROR	((opterr) && (*options != ':'))

#define FLAG_PERMUTE	0x01	/* permute non-options to the end of argv */

#define FLAG_ALLARGS	0x02	/* treat non-options as args to option "-1" */

#define FLAG_LONGONLY	0x04	/* operate as getopt_long_only */

/* return values */

#define	BADCH		(int)'?'

#define	BADARG		((*options == ':') ? (int)':' : (int)'?')

#define	INORDER 	(int)1

#define	EMSG		""

static int getopt_internal(int, char * const *, const char *,

			   const struct option *, int *, int);

static int parse_long_options(char * const *, const char *,

			      const struct option *, int *, int, int);

static int gcd(int, int);

static void permute_args(int, int, int, char * const *);

static char *place = EMSG; /* option letter processing */

/* XXX: set optreset to 1 rather than these two */

static int nonopt_start = -1; /* first non option argument (for permute) */

static int nonopt_end = -1;   /* first option after non options (for permute) */

/* Error messages */

static const char recargchar[] = "option requires an argument -- %c";

static const char recargstring[] = "option requires an argument -- %s";

static const char ambig[] = "ambiguous option -- %.*s";

static const char noarg[] = "option doesn't take an argument -- %.*s";

static const char illoptchar[] = "unknown option -- %c";

static const char illoptstring[] = "unknown option -- %s";

/*

 * Compute the greatest common divisor of a and b.

 */

static int

gcd(int a, int b)

{

	int c;

		a = b;

		b = c;

	}

}

/*

 * Exchange the block from nonopt_start to nonopt_end with the block

 * from nonopt_end to opt_end (keeping the same order of arguments

 * in each block).

 */

static void

permute_args(int panonopt_start, int panonopt_end, int opt_end,

	char * const *nargv)

{

	int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;

	char *swap;

	/*

	 * compute lengths of blocks and number and size of cycles

	 */

		pos = cstart;

			else

		}

	}

}

/*

 * parse_long_options --

 *	Parse long options in argc/argv argument vector.

 * Returns -1 if short_too is set and the option does not match long_options.

 */

static int

parse_long_options(char * const *nargv, const char *options,

	const struct option *long_options, int *idx, int short_too, int flags)

{

	char *current_argv, *has_equal;

	size_t current_argv_len;

	int i, match, exact_match, second_partial_match;

	match = -1;

	exact_match = 0;

	second_partial_match = 0;

		/* argument found (--option=arg) */

		/* find matching long option */

		    current_argv_len))

			continue;

			/* exact match */

			match = i;

			exact_match = 1;

		}

		/*

		 * If this is a known short option, don't allow

		 * a partial match of a single character.

		 */

			continue;

	}

		/* ambiguous abbreviation */

	}

				     current_argv);

			/*

			 * XXX: GNU sets optopt to val regardless of flag

			 */

			else

				optopt = 0;

		}

			    required_argument) {

				/*

				 * optional argument doesn't use next nargv

				 */

			}

		}

			/*

			 * Missing argument; leading ':' indicates no error

			 * should be generated.

			 */

				    current_argv);

			/*

			 * XXX: GNU sets optopt to val regardless of flag

			 */

			else

				optopt = 0;

		}

	} else {			/* unknown option */

		}

	}

	} else

}

/*

 * getopt_internal --

 *	Parse argc/argv argument vector.  Called by user level routines.

 */

static int

getopt_internal(int nargc, char * const *nargv, const char *options,

	const struct option *long_options, int *idx, int flags)

{

	char *oli;				/* option letter list index */

	int optchar, short_too;

	static int posixly_correct = -1;

	/*

	 * XXX Some GNU programs (like cvs) set optind to 0 instead of

	 * XXX using optreset.  Work around this braindamage.

	 */

	/*

	 * Disable GNU extensions if POSIXLY_CORRECT is set or options

	 * string begins with a '+'.

	 */

start:

				/* do permutation, if we have to */

			}

				/*

				 * If we skipped non-options, set optind

				 * to the first of them.

				 */

				optind = nonopt_start;

			}

		}

				/*

				 * GNU extension:

				 * return non-option as argument to option 1

				 */

			}

				/*

				 * If no permutation wanted, stop parsing

				 * at first non-option.

				 */

			}

			/* do permutation */

			}

			/* process next argument */

		}

		/*

		 * If we have "-" do nothing, if "--" we are done.

		 */

			/*

			 * We found an option (--), so if we skipped

			 * non-options, we have to permute.

			 */

			}

		}

	}

	/*

	 * Check long options if:

	 *  1) we were passed some

	 *  2) the arg is not just "-"

	 *  3) either the arg starts with -- we are getopt_long_only()

	 */

		short_too = 0;

		    idx, short_too, flags);

		}

	}

		/*

		 * If the user specified "-" and  '-' isn't listed in

		 * options, return -1 (non-option) as per POSIX.

		 * Otherwise, it is an unknown option character (or ':').

		 */

	}

		/* -W long-option */

			/* NOTHING */;

		} else				/* white space */

		    idx, 0, flags);

	}

			++optind;

	} else {				/* takes (optional) argument */

			optarg = place;

			} else

		}

		++optind;

	}

	/* dump back option letter */

}

/*

 * getopt --

 *	Parse argc/argv argument vector.

 *

 * [eventually this will replace the BSD getopt]

 */

int

getopt(int nargc, char * const *nargv, const char *options)

{

	/*

	 * We don't pass FLAG_PERMUTE to getopt_internal() since

	 * the BSD getopt(3) (unlike GNU) has never done this.

	 *

	 * Furthermore, since many privileged programs call getopt()

	 * before dropping privileges it makes sense to keep things

	 * as simple (and bug-free) as possible.

	 */

}

/*

 * getopt_long --

 *	Parse argc/argv argument vector.

 */

int

getopt_long(int nargc, char * const *nargv, const char *options,

    const struct option *long_options, int *idx)

{

	    FLAG_PERMUTE));

}

/*

 * getopt_long_only --

 *	Parse argc/argv argument vector.

 */

int

getopt_long_only(int nargc, char * const *nargv, const char *options,

    const struct option *long_options, int *idx)

{

	    FLAG_PERMUTE|FLAG_LONGONLY));

}