Get rid of carriage returns; Windows compilers don't require them, and

some UNIX compilers don't like them.

svn path=/trunk/; revision=2580

1 files changed, 754 insertions, 754 deletions

diff --git a/getopt.c b/getopt.c
index a9c230d71f..1285616ccb 100644
--- a/getopt.c
+++ b/getopt.c
@@ -1,754 +1,754 @@
-/* Getopt for GNU.

-

-   $Id: getopt.c,v 1.2 2000/04/12 21:51:28 gram Exp $

-

-   NOTE: getopt is now part of the C library, so if you don't know what

-   "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu

-   before changing it!

-

-   Copyright (C) 1987, 88, 89, 90, 91, 92, 1993

-   	Free Software Foundation, Inc.

-

-   This program is free software; you can redistribute it and/or modify it

-   under the terms of the GNU General Public License as published by the

-   Free Software Foundation; either version 2, or (at your option) any

-   later version.

-

-   This program is distributed in the hope that it will be useful,

-   but WITHOUT ANY WARRANTY; without even the implied warranty of

-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

-   GNU General Public License for more details.

-

-   You should have received a copy of the GNU General Public License

-   along with this program; if not, write to the Free Software

-   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

-

-

-#ifdef HAVE_CONFIG_H

-#include "config.h"

-#endif

-

-#ifndef __STDC__

-/* This is a separate conditional since some stdc systems

-   reject `defined (const)'.  */

-#ifndef const

-#define const

-#endif

-#endif

-

-/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.  */

-#ifndef _NO_PROTO

-#define _NO_PROTO

-#endif

-

-#include <stdio.h>

-

-/* Comment out all this code if we are using the GNU C Library, and are not

-   actually compiling the library itself.  This code is part of the GNU C

-   Library, but also included in many other GNU distributions.  Compiling

-   and linking in this code is a waste when using the GNU C library

-   (especially if it is a shared library).  Rather than having every GNU

-   program understand `configure --with-gnu-libc' and omit the object files,

-   it is simpler to just do this in the source for each such file.  */

-

-#if defined (_LIBC) || !defined (__GNU_LIBRARY__)

-

-

-/* This needs to come after some library #include

-   to get __GNU_LIBRARY__ defined.  */

-#ifdef	__GNU_LIBRARY__

-/* Don't include stdlib.h for non-GNU C libraries because some of them

-   contain conflicting prototypes for getopt.  */

-#include <stdlib.h>

-#endif	/* GNU C library.  */

-

-/* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a

-   long-named option.  Because this is not POSIX.2 compliant, it is

-   being phased out.  */

-/* #define GETOPT_COMPAT */

-

-/* This version of `getopt' appears to the caller like standard Unix `getopt'

-   but it behaves differently for the user, since it allows the user

-   to intersperse the options with the other arguments.

-

-   As `getopt' works, it permutes the elements of ARGV so that,

-   when it is done, all the options precede everything else.  Thus

-   all application programs are extended to handle flexible argument order.

-

-   Setting the environment variable POSIXLY_CORRECT disables permutation.

-   Then the behavior is completely standard.

-

-   GNU application programs can use a third alternative mode in which

-   they can distinguish the relative order of options and other arguments.  */

-

-#include "getopt.h"

-

-/* For communication from `getopt' to the caller.

-   When `getopt' finds an option that takes an argument,

-   the argument value is returned here.

-   Also, when `ordering' is RETURN_IN_ORDER,

-   each non-option ARGV-element is returned here.  */

-

-char *optarg = 0;

-

-/* Index in ARGV of the next element to be scanned.

-   This is used for communication to and from the caller

-   and for communication between successive calls to `getopt'.

-

-   On entry to `getopt', zero means this is the first call; initialize.

-

-   When `getopt' returns EOF, this is the index of the first of the

-   non-option elements that the caller should itself scan.

-

-   Otherwise, `optind' communicates from one call to the next

-   how much of ARGV has been scanned so far.  */

-

-/* XXX 1003.2 says this must be 1 before any call.  */

-int optind = 0;

-

-/* The next char to be scanned in the option-element

-   in which the last option character we returned was found.

-   This allows us to pick up the scan where we left off.

-

-   If this is zero, or a null string, it means resume the scan

-   by advancing to the next ARGV-element.  */

-

-static char *nextchar;

-

-/* Callers store zero here to inhibit the error message

-   for unrecognized options.  */

-

-int opterr = 1;

-

-/* Set to an option character which was unrecognized.

-   This must be initialized on some systems to avoid linking in the

-   system's own getopt implementation.  */

-

-int optopt = '?';

-

-/* Describe how to deal with options that follow non-option ARGV-elements.

-

-   If the caller did not specify anything,

-   the default is REQUIRE_ORDER if the environment variable

-   POSIXLY_CORRECT is defined, PERMUTE otherwise.

-

-   REQUIRE_ORDER means don't recognize them as options;

-   stop option processing when the first non-option is seen.

-   This is what Unix does.

-   This mode of operation is selected by either setting the environment

-   variable POSIXLY_CORRECT, or using `+' as the first character

-   of the list of option characters.

-

-   PERMUTE is the default.  We permute the contents of ARGV as we scan,

-   so that eventually all the non-options are at the end.  This allows options

-   to be given in any order, even with programs that were not written to

-   expect this.

-

-   RETURN_IN_ORDER is an option available to programs that were written

-   to expect options and other ARGV-elements in any order and that care about

-   the ordering of the two.  We describe each non-option ARGV-element

-   as if it were the argument of an option with character code 1.

-   Using `-' as the first character of the list of option characters

-   selects this mode of operation.

-

-   The special argument `--' forces an end of option-scanning regardless

-   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only

-   `--' can cause `getopt' to return EOF with `optind' != ARGC.  */

-

-static enum

-{

-  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER

-} ordering;

-

-#ifdef	__GNU_LIBRARY__

-/* We want to avoid inclusion of string.h with non-GNU libraries

-   because there are many ways it can cause trouble.

-   On some systems, it contains special magic macros that don't work

-   in GCC.  */

-#include <string.h>

-#define	my_index	strchr

-#else

-

-/* Avoid depending on library functions or files

-   whose names are inconsistent.  */

-

-char *getenv ();

-

-static char *

-my_index (str, chr)

-     const char *str;

-     int chr;

-{

-  while (*str)

-    {

-      if (*str == chr)

-	return (char *) str;

-      str++;

-    }

-  return 0;

-}

-

-/* If using GCC, we can safely declare strlen this way.

-   If not using GCC, it is ok not to declare it.

-   (Supposedly there are some machines where it might get a warning,

-   but changing this conditional to __STDC__ is too risky.)  */

-#ifdef __GNUC__

-#ifdef IN_GCC

-#include "gstddef.h"

-#else

-#include <stddef.h>

-#endif

-extern size_t strlen (const char *);

-#endif

-

-#endif				/* GNU C library.  */

-

-/* Handle permutation of arguments.  */

-

-/* Describe the part of ARGV that contains non-options that have

-   been skipped.  `first_nonopt' is the index in ARGV of the first of them;

-   `last_nonopt' is the index after the last of them.  */

-

-static int first_nonopt;

-static int last_nonopt;

-

-/* Exchange two adjacent subsequences of ARGV.

-   One subsequence is elements [first_nonopt,last_nonopt)

-   which contains all the non-options that have been skipped so far.

-   The other is elements [last_nonopt,optind), which contains all

-   the options processed since those non-options were skipped.

-

-   `first_nonopt' and `last_nonopt' are relocated so that they describe

-   the new indices of the non-options in ARGV after they are moved.  */

-

-static void

-exchange (argv)

-     char **argv;

-{

-  int bottom = first_nonopt;

-  int middle = last_nonopt;

-  int top = optind;

-  char *tem;

-

-  /* Exchange the shorter segment with the far end of the longer segment.

-     That puts the shorter segment into the right place.

-     It leaves the longer segment in the right place overall,

-     but it consists of two parts that need to be swapped next.  */

-

-  while (top > middle && middle > bottom)

-    {

-      if (top - middle > middle - bottom)

-	{

-	  /* Bottom segment is the short one.  */

-	  int len = middle - bottom;

-	  register int i;

-

-	  /* Swap it with the top part of the top segment.  */

-	  for (i = 0; i < len; i++)

-	    {

-	      tem = argv[bottom + i];

-	      argv[bottom + i] = argv[top - (middle - bottom) + i];

-	      argv[top - (middle - bottom) + i] = tem;

-	    }

-	  /* Exclude the moved bottom segment from further swapping.  */

-	  top -= len;

-	}

-      else

-	{

-	  /* Top segment is the short one.  */

-	  int len = top - middle;

-	  register int i;

-

-	  /* Swap it with the bottom part of the bottom segment.  */

-	  for (i = 0; i < len; i++)

-	    {

-	      tem = argv[bottom + i];

-	      argv[bottom + i] = argv[middle + i];

-	      argv[middle + i] = tem;

-	    }

-	  /* Exclude the moved top segment from further swapping.  */

-	  bottom += len;

-	}

-    }

-

-  /* Update records for the slots the non-options now occupy.  */

-

-  first_nonopt += (optind - last_nonopt);

-  last_nonopt = optind;

-}

-

-/* Scan elements of ARGV (whose length is ARGC) for option characters

-   given in OPTSTRING.

-

-   If an element of ARGV starts with '-', and is not exactly "-" or "--",

-   then it is an option element.  The characters of this element

-   (aside from the initial '-') are option characters.  If `getopt'

-   is called repeatedly, it returns successively each of the option characters

-   from each of the option elements.

-

-   If `getopt' finds another option character, it returns that character,

-   updating `optind' and `nextchar' so that the next call to `getopt' can

-   resume the scan with the following option character or ARGV-element.

-

-   If there are no more option characters, `getopt' returns `EOF'.

-   Then `optind' is the index in ARGV of the first ARGV-element

-   that is not an option.  (The ARGV-elements have been permuted

-   so that those that are not options now come last.)

-

-   OPTSTRING is a string containing the legitimate option characters.

-   If an option character is seen that is not listed in OPTSTRING,

-   return '?' after printing an error message.  If you set `opterr' to

-   zero, the error message is suppressed but we still return '?'.

-

-   If a char in OPTSTRING is followed by a colon, that means it wants an arg,

-   so the following text in the same ARGV-element, or the text of the following

-   ARGV-element, is returned in `optarg'.  Two colons mean an option that

-   wants an optional arg; if there is text in the current ARGV-element,

-   it is returned in `optarg', otherwise `optarg' is set to zero.

-

-   If OPTSTRING starts with `-' or `+', it requests different methods of

-   handling the non-option ARGV-elements.

-   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.

-

-   Long-named options begin with `--' instead of `-'.

-   Their names may be abbreviated as long as the abbreviation is unique

-   or is an exact match for some defined option.  If they have an

-   argument, it follows the option name in the same ARGV-element, separated

-   from the option name by a `=', or else the in next ARGV-element.

-   When `getopt' finds a long-named option, it returns 0 if that option's

-   `flag' field is nonzero, the value of the option's `val' field

-   if the `flag' field is zero.

-

-   The elements of ARGV aren't really const, because we permute them.

-   But we pretend they're const in the prototype to be compatible

-   with other systems.

-

-   LONGOPTS is a vector of `struct option' terminated by an

-   element containing a name which is zero.

-

-   LONGIND returns the index in LONGOPT of the long-named option found.

-   It is only valid when a long-named option has been found by the most

-   recent call.

-

-   If LONG_ONLY is nonzero, '-' as well as '--' can introduce

-   long-named options.  */

-

-int

-_getopt_internal (argc, argv, optstring, longopts, longind, long_only)

-     int argc;

-     char *const *argv;

-     const char *optstring;

-     const struct option *longopts;

-     int *longind;

-     int long_only;

-{

-  int option_index;

-

-  optarg = 0;

-

-  /* Initialize the internal data when the first call is made.

-     Start processing options with ARGV-element 1 (since ARGV-element 0

-     is the program name); the sequence of previously skipped

-     non-option ARGV-elements is empty.  */

-

-  if (optind == 0)

-    {

-      first_nonopt = last_nonopt = optind = 1;

-

-      nextchar = NULL;

-

-      /* Determine how to handle the ordering of options and nonoptions.  */

-

-      if (optstring[0] == '-')

-	{

-	  ordering = RETURN_IN_ORDER;

-	  ++optstring;

-	}

-      else if (optstring[0] == '+')

-	{

-	  ordering = REQUIRE_ORDER;

-	  ++optstring;

-	}

-      else if (getenv ("POSIXLY_CORRECT") != NULL)

-	ordering = REQUIRE_ORDER;

-      else

-	ordering = PERMUTE;

-    }

-

-  if (nextchar == NULL || *nextchar == '\0')

-    {

-      if (ordering == PERMUTE)

-	{

-	  /* If we have just processed some options following some non-options,

-	     exchange them so that the options come first.  */

-

-	  if (first_nonopt != last_nonopt && last_nonopt != optind)

-	    exchange ((char **) argv);

-	  else if (last_nonopt != optind)

-	    first_nonopt = optind;

-

-	  /* Now skip any additional non-options

-	     and extend the range of non-options previously skipped.  */

-

-	  while (optind < argc

-		 && (argv[optind][0] != '-' || argv[optind][1] == '\0')

-#ifdef GETOPT_COMPAT

-		 && (longopts == NULL

-		     || argv[optind][0] != '+' || argv[optind][1] == '\0')

-#endif				/* GETOPT_COMPAT */

-		 )

-	    optind++;

-	  last_nonopt = optind;

-	}

-

-      /* Special ARGV-element `--' means premature end of options.

-	 Skip it like a null option,

-	 then exchange with previous non-options as if it were an option,

-	 then skip everything else like a non-option.  */

-

-      if (optind != argc && !strcmp (argv[optind], "--"))

-	{

-	  optind++;

-

-	  if (first_nonopt != last_nonopt && last_nonopt != optind)

-	    exchange ((char **) argv);

-	  else if (first_nonopt == last_nonopt)

-	    first_nonopt = optind;

-	  last_nonopt = argc;

-

-	  optind = argc;

-	}

-

-      /* If we have done all the ARGV-elements, stop the scan

-	 and back over any non-options that we skipped and permuted.  */

-

-      if (optind == argc)

-	{

-	  /* Set the next-arg-index to point at the non-options

-	     that we previously skipped, so the caller will digest them.  */

-	  if (first_nonopt != last_nonopt)

-	    optind = first_nonopt;

-	  return EOF;

-	}

-

-      /* If we have come to a non-option and did not permute it,

-	 either stop the scan or describe it to the caller and pass it by.  */

-

-      if ((argv[optind][0] != '-' || argv[optind][1] == '\0')

-#ifdef GETOPT_COMPAT

-	  && (longopts == NULL

-	      || argv[optind][0] != '+' || argv[optind][1] == '\0')

-#endif				/* GETOPT_COMPAT */

-	  )

-	{

-	  if (ordering == REQUIRE_ORDER)

-	    return EOF;

-	  optarg = argv[optind++];

-	  return 1;

-	}

-

-      /* We have found another option-ARGV-element.

-	 Start decoding its characters.  */

-

-      nextchar = (argv[optind] + 1

-		  + (longopts != NULL && argv[optind][1] == '-'));

-    }

-

-  if (longopts != NULL

-      && ((argv[optind][0] == '-'

-	   && (argv[optind][1] == '-' || long_only))

-#ifdef GETOPT_COMPAT

-	  || argv[optind][0] == '+'

-#endif				/* GETOPT_COMPAT */

-	  ))

-    {

-      const struct option *p;

-      char *s = nextchar;

-      int exact = 0;

-      int ambig = 0;

-      const struct option *pfound = NULL;

-      int indfound;

-

-      while (*s && *s != '=')

-	s++;

-

-      /* Test all options for either exact match or abbreviated matches.  */

-      for (p = longopts, option_index = 0; p->name;

-	   p++, option_index++)

-	if (!strncmp (p->name, nextchar, s - nextchar))

-	  {

-	    if (s - nextchar == strlen (p->name))

-	      {

-		/* Exact match found.  */

-		pfound = p;

-		indfound = option_index;

-		exact = 1;

-		break;

-	      }

-	    else if (pfound == NULL)

-	      {

-		/* First nonexact match found.  */

-		pfound = p;

-		indfound = option_index;

-	      }

-	    else

-	      /* Second nonexact match found.  */

-	      ambig = 1;

-	  }

-

-      if (ambig && !exact)

-	{

-	  if (opterr)

-	    fprintf (stderr, "%s: option `%s' is ambiguous\n",

-		     argv[0], argv[optind]);

-	  nextchar += strlen (nextchar);

-	  optind++;

-	  return '?';

-	}

-

-      if (pfound != NULL)

-	{

-	  option_index = indfound;

-	  optind++;

-	  if (*s)

-	    {

-	      /* Don't test has_arg with >, because some C compilers don't

-		 allow it to be used on enums.  */

-	      if (pfound->has_arg)

-		optarg = s + 1;

-	      else

-		{

-		  if (opterr)

-		    {

-		      if (argv[optind - 1][1] == '-')

-			/* --option */

-			fprintf (stderr,

-				 "%s: option `--%s' doesn't allow an argument\n",

-				 argv[0], pfound->name);

-		      else

-			/* +option or -option */

-			fprintf (stderr,

-			     "%s: option `%c%s' doesn't allow an argument\n",

-			     argv[0], argv[optind - 1][0], pfound->name);

-		    }

-		  nextchar += strlen (nextchar);

-		  return '?';

-		}

-	    }

-	  else if (pfound->has_arg == 1)

-	    {

-	      if (optind < argc)

-		optarg = argv[optind++];

-	      else

-		{

-		  if (opterr)

-		    fprintf (stderr, "%s: option `%s' requires an argument\n",

-			     argv[0], argv[optind - 1]);

-		  nextchar += strlen (nextchar);

-		  return optstring[0] == ':' ? ':' : '?';

-		}

-	    }

-	  nextchar += strlen (nextchar);

-	  if (longind != NULL)

-	    *longind = option_index;

-	  if (pfound->flag)

-	    {

-	      *(pfound->flag) = pfound->val;

-	      return 0;

-	    }

-	  return pfound->val;

-	}

-      /* Can't find it as a long option.  If this is not getopt_long_only,

-	 or the option starts with '--' or is not a valid short

-	 option, then it's an error.

-	 Otherwise interpret it as a short option.  */

-      if (!long_only || argv[optind][1] == '-'

-#ifdef GETOPT_COMPAT

-	  || argv[optind][0] == '+'

-#endif				/* GETOPT_COMPAT */

-	  || my_index (optstring, *nextchar) == NULL)

-	{

-	  if (opterr)

-	    {

-	      if (argv[optind][1] == '-')

-		/* --option */

-		fprintf (stderr, "%s: unrecognized option `--%s'\n",

-			 argv[0], nextchar);

-	      else

-		/* +option or -option */

-		fprintf (stderr, "%s: unrecognized option `%c%s'\n",

-			 argv[0], argv[optind][0], nextchar);

-	    }

-	  nextchar = (char *) "";

-	  optind++;

-	  return '?';

-	}

-    }

-

-  /* Look at and handle the next option-character.  */

-

-  {

-    char c = *nextchar++;

-    char *temp = my_index (optstring, c);

-

-    /* Increment `optind' when we start to process its last character.  */

-    if (*nextchar == '\0')

-      ++optind;

-

-    if (temp == NULL || c == ':')

-      {

-	if (opterr)

-	  {

-#if 0

-	    if (c < 040 || c >= 0177)

-	      fprintf (stderr, "%s: unrecognized option, character code 0%o\n",

-		       argv[0], c);

-	    else

-	      fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);

-#else

-	    /* 1003.2 specifies the format of this message.  */

-	    fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);

-#endif

-	  }

-	optopt = c;

-	return '?';

-      }

-    if (temp[1] == ':')

-      {

-	if (temp[2] == ':')

-	  {

-	    /* This is an option that accepts an argument optionally.  */

-	    if (*nextchar != '\0')

-	      {

-		optarg = nextchar;

-		optind++;

-	      }

-	    else

-	      optarg = 0;

-	    nextchar = NULL;

-	  }

-	else

-	  {

-	    /* This is an option that requires an argument.  */

-	    if (*nextchar != '\0')

-	      {

-		optarg = nextchar;

-		/* If we end this ARGV-element by taking the rest as an arg,

-		   we must advance to the next element now.  */

-		optind++;

-	      }

-	    else if (optind == argc)

-	      {

-		if (opterr)

-		  {

-#if 0

-		    fprintf (stderr, "%s: option `-%c' requires an argument\n",

-			     argv[0], c);

-#else

-		    /* 1003.2 specifies the format of this message.  */

-		    fprintf (stderr, "%s: option requires an argument -- %c\n",

-			     argv[0], c);

-#endif

-		  }

-		optopt = c;

-		if (optstring[0] == ':')

-		  c = ':';

-		else

-		  c = '?';

-	      }

-	    else

-	      /* We already incremented `optind' once;

-		 increment it again when taking next ARGV-elt as argument.  */

-	      optarg = argv[optind++];

-	    nextchar = NULL;

-	  }

-      }

-    return c;

-  }

-}

-

-int

-getopt (argc, argv, optstring)

-     int argc;

-     char *const *argv;

-     const char *optstring;

-{

-  return _getopt_internal (argc, argv, optstring,

-			   (const struct option *) 0,

-			   (int *) 0,

-			   0);

-}

-

-#endif	/* _LIBC or not __GNU_LIBRARY__.  */

-

-#ifdef TEST

-

-/* Compile with -DTEST to make an executable for use in testing

-   the above definition of `getopt'.  */

-

-int

-main (argc, argv)

-     int argc;

-     char **argv;

-{

-  int c;

-  int digit_optind = 0;

-

-  while (1)

-    {

-      int this_option_optind = optind ? optind : 1;

-

-      c = getopt (argc, argv, "abc:d:0123456789");

-      if (c == EOF)

-	break;

-

-      switch (c)

-	{

-	case '0':

-	case '1':

-	case '2':

-	case '3':

-	case '4':

-	case '5':

-	case '6':

-	case '7':

-	case '8':

-	case '9':

-	  if (digit_optind != 0 && digit_optind != this_option_optind)

-	    printf ("digits occur in two different argv-elements.\n");

-	  digit_optind = this_option_optind;

-	  printf ("option %c\n", c);

-	  break;

-

-	case 'a':

-	  printf ("option a\n");

-	  break;

-

-	case 'b':

-	  printf ("option b\n");

-	  break;

-

-	case 'c':

-	  printf ("option c with value `%s'\n", optarg);

-	  break;

-

-	case '?':

-	  break;

-

-	default:

-	  printf ("?? getopt returned character code 0%o ??\n", c);

-	}

-    }

-

-  if (optind < argc)

-    {

-      printf ("non-option ARGV-elements: ");

-      while (optind < argc)

-	printf ("%s ", argv[optind++]);

-      printf ("\n");

-    }

-

-  exit (0);

-}

-

-#endif /* TEST */

+/* Getopt for GNU.
+
+   $Id: getopt.c,v 1.3 2000/11/08 19:57:39 guy Exp $
+
+   NOTE: getopt is now part of the C library, so if you don't know what
+   "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
+   before changing it!
+
+   Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
+   	Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef __STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.  */
+#ifndef _NO_PROTO
+#define _NO_PROTO
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef	__GNU_LIBRARY__
+/* Don't include stdlib.h for non-GNU C libraries because some of them
+   contain conflicting prototypes for getopt.  */
+#include <stdlib.h>
+#endif	/* GNU C library.  */
+
+/* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
+   long-named option.  Because this is not POSIX.2 compliant, it is
+   being phased out.  */
+/* #define GETOPT_COMPAT */
+
+/* This version of `getopt' appears to the caller like standard Unix `getopt'
+   but it behaves differently for the user, since it allows the user
+   to intersperse the options with the other arguments.
+
+   As `getopt' works, it permutes the elements of ARGV so that,
+   when it is done, all the options precede everything else.  Thus
+   all application programs are extended to handle flexible argument order.
+
+   Setting the environment variable POSIXLY_CORRECT disables permutation.
+   Then the behavior is completely standard.
+
+   GNU application programs can use a third alternative mode in which
+   they can distinguish the relative order of options and other arguments.  */
+
+#include "getopt.h"
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+char *optarg = 0;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns EOF, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/* XXX 1003.2 says this must be 1 before any call.  */
+int optind = 0;
+
+/* The next char to be scanned in the option-element
+   in which the last option character we returned was found.
+   This allows us to pick up the scan where we left off.
+
+   If this is zero, or a null string, it means resume the scan
+   by advancing to the next ARGV-element.  */
+
+static char *nextchar;
+
+/* Callers store zero here to inhibit the error message
+   for unrecognized options.  */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+   This must be initialized on some systems to avoid linking in the
+   system's own getopt implementation.  */
+
+int optopt = '?';
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+   If the caller did not specify anything,
+   the default is REQUIRE_ORDER if the environment variable
+   POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+   REQUIRE_ORDER means don't recognize them as options;
+   stop option processing when the first non-option is seen.
+   This is what Unix does.
+   This mode of operation is selected by either setting the environment
+   variable POSIXLY_CORRECT, or using `+' as the first character
+   of the list of option characters.
+
+   PERMUTE is the default.  We permute the contents of ARGV as we scan,
+   so that eventually all the non-options are at the end.  This allows options
+   to be given in any order, even with programs that were not written to
+   expect this.
+
+   RETURN_IN_ORDER is an option available to programs that were written
+   to expect options and other ARGV-elements in any order and that care about
+   the ordering of the two.  We describe each non-option ARGV-element
+   as if it were the argument of an option with character code 1.
+   Using `-' as the first character of the list of option characters
+   selects this mode of operation.
+
+   The special argument `--' forces an end of option-scanning regardless
+   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+   `--' can cause `getopt' to return EOF with `optind' != ARGC.  */
+
+static enum
+{
+  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+} ordering;
+
+#ifdef	__GNU_LIBRARY__
+/* We want to avoid inclusion of string.h with non-GNU libraries
+   because there are many ways it can cause trouble.
+   On some systems, it contains special magic macros that don't work
+   in GCC.  */
+#include <string.h>
+#define	my_index	strchr
+#else
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+char *getenv ();
+
+static char *
+my_index (str, chr)
+     const char *str;
+     int chr;
+{
+  while (*str)
+    {
+      if (*str == chr)
+	return (char *) str;
+      str++;
+    }
+  return 0;
+}
+
+/* If using GCC, we can safely declare strlen this way.
+   If not using GCC, it is ok not to declare it.
+   (Supposedly there are some machines where it might get a warning,
+   but changing this conditional to __STDC__ is too risky.)  */
+#ifdef __GNUC__
+#ifdef IN_GCC
+#include "gstddef.h"
+#else
+#include <stddef.h>
+#endif
+extern size_t strlen (const char *);
+#endif
+
+#endif				/* GNU C library.  */
+
+/* Handle permutation of arguments.  */
+
+/* Describe the part of ARGV that contains non-options that have
+   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
+   `last_nonopt' is the index after the last of them.  */
+
+static int first_nonopt;
+static int last_nonopt;
+
+/* Exchange two adjacent subsequences of ARGV.
+   One subsequence is elements [first_nonopt,last_nonopt)
+   which contains all the non-options that have been skipped so far.
+   The other is elements [last_nonopt,optind), which contains all
+   the options processed since those non-options were skipped.
+
+   `first_nonopt' and `last_nonopt' are relocated so that they describe
+   the new indices of the non-options in ARGV after they are moved.  */
+
+static void
+exchange (argv)
+     char **argv;
+{
+  int bottom = first_nonopt;
+  int middle = last_nonopt;
+  int top = optind;
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  register int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  register int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  first_nonopt += (optind - last_nonopt);
+  last_nonopt = optind;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+   given in OPTSTRING.
+
+   If an element of ARGV starts with '-', and is not exactly "-" or "--",
+   then it is an option element.  The characters of this element
+   (aside from the initial '-') are option characters.  If `getopt'
+   is called repeatedly, it returns successively each of the option characters
+   from each of the option elements.
+
+   If `getopt' finds another option character, it returns that character,
+   updating `optind' and `nextchar' so that the next call to `getopt' can
+   resume the scan with the following option character or ARGV-element.
+
+   If there are no more option characters, `getopt' returns `EOF'.
+   Then `optind' is the index in ARGV of the first ARGV-element
+   that is not an option.  (The ARGV-elements have been permuted
+   so that those that are not options now come last.)
+
+   OPTSTRING is a string containing the legitimate option characters.
+   If an option character is seen that is not listed in OPTSTRING,
+   return '?' after printing an error message.  If you set `opterr' to
+   zero, the error message is suppressed but we still return '?'.
+
+   If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+   so the following text in the same ARGV-element, or the text of the following
+   ARGV-element, is returned in `optarg'.  Two colons mean an option that
+   wants an optional arg; if there is text in the current ARGV-element,
+   it is returned in `optarg', otherwise `optarg' is set to zero.
+
+   If OPTSTRING starts with `-' or `+', it requests different methods of
+   handling the non-option ARGV-elements.
+   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+   Long-named options begin with `--' instead of `-'.
+   Their names may be abbreviated as long as the abbreviation is unique
+   or is an exact match for some defined option.  If they have an
+   argument, it follows the option name in the same ARGV-element, separated
+   from the option name by a `=', or else the in next ARGV-element.
+   When `getopt' finds a long-named option, it returns 0 if that option's
+   `flag' field is nonzero, the value of the option's `val' field
+   if the `flag' field is zero.
+
+   The elements of ARGV aren't really const, because we permute them.
+   But we pretend they're const in the prototype to be compatible
+   with other systems.
+
+   LONGOPTS is a vector of `struct option' terminated by an
+   element containing a name which is zero.
+
+   LONGIND returns the index in LONGOPT of the long-named option found.
+   It is only valid when a long-named option has been found by the most
+   recent call.
+
+   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+   long-named options.  */
+
+int
+_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
+     int argc;
+     char *const *argv;
+     const char *optstring;
+     const struct option *longopts;
+     int *longind;
+     int long_only;
+{
+  int option_index;
+
+  optarg = 0;
+
+  /* Initialize the internal data when the first call is made.
+     Start processing options with ARGV-element 1 (since ARGV-element 0
+     is the program name); the sequence of previously skipped
+     non-option ARGV-elements is empty.  */
+
+  if (optind == 0)
+    {
+      first_nonopt = last_nonopt = optind = 1;
+
+      nextchar = NULL;
+
+      /* Determine how to handle the ordering of options and nonoptions.  */
+
+      if (optstring[0] == '-')
+	{
+	  ordering = RETURN_IN_ORDER;
+	  ++optstring;
+	}
+      else if (optstring[0] == '+')
+	{
+	  ordering = REQUIRE_ORDER;
+	  ++optstring;
+	}
+      else if (getenv ("POSIXLY_CORRECT") != NULL)
+	ordering = REQUIRE_ORDER;
+      else
+	ordering = PERMUTE;
+    }
+
+  if (nextchar == NULL || *nextchar == '\0')
+    {
+      if (ordering == PERMUTE)
+	{
+	  /* If we have just processed some options following some non-options,
+	     exchange them so that the options come first.  */
+
+	  if (first_nonopt != last_nonopt && last_nonopt != optind)
+	    exchange ((char **) argv);
+	  else if (last_nonopt != optind)
+	    first_nonopt = optind;
+
+	  /* Now skip any additional non-options
+	     and extend the range of non-options previously skipped.  */
+
+	  while (optind < argc
+		 && (argv[optind][0] != '-' || argv[optind][1] == '\0')
+#ifdef GETOPT_COMPAT
+		 && (longopts == NULL
+		     || argv[optind][0] != '+' || argv[optind][1] == '\0')
+#endif				/* GETOPT_COMPAT */
+		 )
+	    optind++;
+	  last_nonopt = optind;
+	}
+
+      /* Special ARGV-element `--' means premature end of options.
+	 Skip it like a null option,
+	 then exchange with previous non-options as if it were an option,
+	 then skip everything else like a non-option.  */
+
+      if (optind != argc && !strcmp (argv[optind], "--"))
+	{
+	  optind++;
+
+	  if (first_nonopt != last_nonopt && last_nonopt != optind)
+	    exchange ((char **) argv);
+	  else if (first_nonopt == last_nonopt)
+	    first_nonopt = optind;
+	  last_nonopt = argc;
+
+	  optind = argc;
+	}
+
+      /* If we have done all the ARGV-elements, stop the scan
+	 and back over any non-options that we skipped and permuted.  */
+
+      if (optind == argc)
+	{
+	  /* Set the next-arg-index to point at the non-options
+	     that we previously skipped, so the caller will digest them.  */
+	  if (first_nonopt != last_nonopt)
+	    optind = first_nonopt;
+	  return EOF;
+	}
+
+      /* If we have come to a non-option and did not permute it,
+	 either stop the scan or describe it to the caller and pass it by.  */
+
+      if ((argv[optind][0] != '-' || argv[optind][1] == '\0')
+#ifdef GETOPT_COMPAT
+	  && (longopts == NULL
+	      || argv[optind][0] != '+' || argv[optind][1] == '\0')
+#endif				/* GETOPT_COMPAT */
+	  )
+	{
+	  if (ordering == REQUIRE_ORDER)
+	    return EOF;
+	  optarg = argv[optind++];
+	  return 1;
+	}
+
+      /* We have found another option-ARGV-element.
+	 Start decoding its characters.  */
+
+      nextchar = (argv[optind] + 1
+		  + (longopts != NULL && argv[optind][1] == '-'));
+    }
+
+  if (longopts != NULL
+      && ((argv[optind][0] == '-'
+	   && (argv[optind][1] == '-' || long_only))
+#ifdef GETOPT_COMPAT
+	  || argv[optind][0] == '+'
+#endif				/* GETOPT_COMPAT */
+	  ))
+    {
+      const struct option *p;
+      char *s = nextchar;
+      int exact = 0;
+      int ambig = 0;
+      const struct option *pfound = NULL;
+      int indfound;
+
+      while (*s && *s != '=')
+	s++;
+
+      /* Test all options for either exact match or abbreviated matches.  */
+      for (p = longopts, option_index = 0; p->name;
+	   p++, option_index++)
+	if (!strncmp (p->name, nextchar, s - nextchar))
+	  {
+	    if (s - nextchar == strlen (p->name))
+	      {
+		/* Exact match found.  */
+		pfound = p;
+		indfound = option_index;
+		exact = 1;
+		break;
+	      }
+	    else if (pfound == NULL)
+	      {
+		/* First nonexact match found.  */
+		pfound = p;
+		indfound = option_index;
+	      }
+	    else
+	      /* Second nonexact match found.  */
+	      ambig = 1;
+	  }
+
+      if (ambig && !exact)
+	{
+	  if (opterr)
+	    fprintf (stderr, "%s: option `%s' is ambiguous\n",
+		     argv[0], argv[optind]);
+	  nextchar += strlen (nextchar);
+	  optind++;
+	  return '?';
+	}
+
+      if (pfound != NULL)
+	{
+	  option_index = indfound;
+	  optind++;
+	  if (*s)
+	    {
+	      /* Don't test has_arg with >, because some C compilers don't
+		 allow it to be used on enums.  */
+	      if (pfound->has_arg)
+		optarg = s + 1;
+	      else
+		{
+		  if (opterr)
+		    {
+		      if (argv[optind - 1][1] == '-')
+			/* --option */
+			fprintf (stderr,
+				 "%s: option `--%s' doesn't allow an argument\n",
+				 argv[0], pfound->name);
+		      else
+			/* +option or -option */
+			fprintf (stderr,
+			     "%s: option `%c%s' doesn't allow an argument\n",
+			     argv[0], argv[optind - 1][0], pfound->name);
+		    }
+		  nextchar += strlen (nextchar);
+		  return '?';
+		}
+	    }
+	  else if (pfound->has_arg == 1)
+	    {
+	      if (optind < argc)
+		optarg = argv[optind++];
+	      else
+		{
+		  if (opterr)
+		    fprintf (stderr, "%s: option `%s' requires an argument\n",
+			     argv[0], argv[optind - 1]);
+		  nextchar += strlen (nextchar);
+		  return optstring[0] == ':' ? ':' : '?';
+		}
+	    }
+	  nextchar += strlen (nextchar);
+	  if (longind != NULL)
+	    *longind = option_index;
+	  if (pfound->flag)
+	    {
+	      *(pfound->flag) = pfound->val;
+	      return 0;
+	    }
+	  return pfound->val;
+	}
+      /* Can't find it as a long option.  If this is not getopt_long_only,
+	 or the option starts with '--' or is not a valid short
+	 option, then it's an error.
+	 Otherwise interpret it as a short option.  */
+      if (!long_only || argv[optind][1] == '-'
+#ifdef GETOPT_COMPAT
+	  || argv[optind][0] == '+'
+#endif				/* GETOPT_COMPAT */
+	  || my_index (optstring, *nextchar) == NULL)
+	{
+	  if (opterr)
+	    {
+	      if (argv[optind][1] == '-')
+		/* --option */
+		fprintf (stderr, "%s: unrecognized option `--%s'\n",
+			 argv[0], nextchar);
+	      else
+		/* +option or -option */
+		fprintf (stderr, "%s: unrecognized option `%c%s'\n",
+			 argv[0], argv[optind][0], nextchar);
+	    }
+	  nextchar = (char *) "";
+	  optind++;
+	  return '?';
+	}
+    }
+
+  /* Look at and handle the next option-character.  */
+
+  {
+    char c = *nextchar++;
+    char *temp = my_index (optstring, c);
+
+    /* Increment `optind' when we start to process its last character.  */
+    if (*nextchar == '\0')
+      ++optind;
+
+    if (temp == NULL || c == ':')
+      {
+	if (opterr)
+	  {
+#if 0
+	    if (c < 040 || c >= 0177)
+	      fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
+		       argv[0], c);
+	    else
+	      fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);
+#else
+	    /* 1003.2 specifies the format of this message.  */
+	    fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
+#endif
+	  }
+	optopt = c;
+	return '?';
+      }
+    if (temp[1] == ':')
+      {
+	if (temp[2] == ':')
+	  {
+	    /* This is an option that accepts an argument optionally.  */
+	    if (*nextchar != '\0')
+	      {
+		optarg = nextchar;
+		optind++;
+	      }
+	    else
+	      optarg = 0;
+	    nextchar = NULL;
+	  }
+	else
+	  {
+	    /* This is an option that requires an argument.  */
+	    if (*nextchar != '\0')
+	      {
+		optarg = nextchar;
+		/* If we end this ARGV-element by taking the rest as an arg,
+		   we must advance to the next element now.  */
+		optind++;
+	      }
+	    else if (optind == argc)
+	      {
+		if (opterr)
+		  {
+#if 0
+		    fprintf (stderr, "%s: option `-%c' requires an argument\n",
+			     argv[0], c);
+#else
+		    /* 1003.2 specifies the format of this message.  */
+		    fprintf (stderr, "%s: option requires an argument -- %c\n",
+			     argv[0], c);
+#endif
+		  }
+		optopt = c;
+		if (optstring[0] == ':')
+		  c = ':';
+		else
+		  c = '?';
+	      }
+	    else
+	      /* We already incremented `optind' once;
+		 increment it again when taking next ARGV-elt as argument.  */
+	      optarg = argv[optind++];
+	    nextchar = NULL;
+	  }
+      }
+    return c;
+  }
+}
+
+int
+getopt (argc, argv, optstring)
+     int argc;
+     char *const *argv;
+     const char *optstring;
+{
+  return _getopt_internal (argc, argv, optstring,
+			   (const struct option *) 0,
+			   (int *) 0,
+			   0);
+}
+
+#endif	/* _LIBC or not __GNU_LIBRARY__.  */
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+   the above definition of `getopt'.  */
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+
+      c = getopt (argc, argv, "abc:d:0123456789");
+      if (c == EOF)
+	break;
+
+      switch (c)
+	{
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value `%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */