Skip to content
Snippets Groups Projects
Select Git revision
  • 4c658fbfae00580593b9d82a25aee182f313773a
  • master default
  • wip-slh-dsa-sha2-128s
  • master-updates
  • release-3.10-fixes
  • getopt-prototype
  • fix-bcrypt-warning
  • refactor-hmac
  • wip-use-alignas
  • trim-sha3-context
  • fix-gitlab-ci
  • check-fat-emulate
  • delete-digest_func-size
  • slh-dsa-shake-128f-nettle
  • slh-dsa-shake-128s-nettle
  • slh-dsa-shake-128s
  • delete-openpgp
  • ppc64-sha512
  • delete-md5-compat
  • cleanup-hmac-tests
  • ppc64-sha256
  • nettle_3.10.2_release_20250626
  • nettle_3.10.1_release_20241230
  • nettle_3.10_release_20240616
  • nettle_3.10rc2
  • nettle_3.10rc1
  • nettle_3.9.1_release_20230601
  • nettle_3.9_release_20230514
  • nettle_3.8.1_release_20220727
  • nettle_3.8_release_20220602
  • nettle_3.7.3_release_20210606
  • nettle_3.7.2_release_20210321
  • nettle_3.7.1_release_20210217
  • nettle_3.7_release_20210104
  • nettle_3.7rc1
  • nettle_3.6_release_20200429
  • nettle_3.6rc3
  • nettle_3.6rc2
  • nettle_3.6rc1
  • nettle_3.5.1_release_20190627
  • nettle_3.5_release_20190626
41 results

getopt.c

Blame
  • getopt.c 33.10 KiB
    /* Getopt for GNU.
       NOTE: getopt is part of the C library, so if you don't know what
       "Keep this file name-space clean" means, talk to drepper@gnu.org
       before changing it!
       Copyright (C) 1987-2014 Free Software Foundation, Inc.
       This file is part of the GNU C Library.
    
       The GNU C Library is free software; you can redistribute it and/or
       modify it under the terms of the GNU Lesser General Public
       License as published by the Free Software Foundation; either
       version 2.1 of the License, or (at your option) any later version.
    
       The GNU C Library 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
       Lesser General Public License for more details.
    
       You should have received a copy of the GNU Lesser General Public
       License along with the GNU C Library; if not, see
       <http://www.gnu.org/licenses/>.  */
    
    /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
       Ditto for AIX 3.2 and <stdlib.h>.  */
    #ifndef _NO_PROTO
    # define _NO_PROTO
    #endif
    
    #ifdef HAVE_CONFIG_H
    # include <config.h>
    #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.  */
    
    #define GETOPT_INTERFACE_VERSION 2
    #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
    # include <gnu-versions.h>
    # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
    #  define ELIDE_CODE
    # endif
    #endif
    
    #ifndef ELIDE_CODE
    
    
    /* 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>
    # include <unistd.h>
    #endif	/* GNU C library.  */
    
    #include <string.h>
    
    #ifdef VMS
    # include <unixlib.h>
    #endif
    
    #ifdef _LIBC
    # include <libintl.h>
    #else
    /* The glibc version includes "gettext.h" here, but Nettle currently doesn't
       have that. */
    # define _(msgid) msgid
    #endif
    
    #if defined _LIBC
    # include <wchar.h>
    #endif
    
    #ifndef attribute_hidden
    # define attribute_hidden
    #endif
    
    /* 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"
    #include "getopt_int.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;
    
    /* 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 -1, 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.  */
    
    /* 1003.2 says this must be 1 before any call.  */
    int optind = 1;
    
    /* 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 = '?';
    
    /* Keep a global copy of all internal members of getopt_data.  */
    
    static struct _getopt_data getopt_data;
    
    
    #ifndef __GNU_LIBRARY__
    
    /* Avoid depending on library functions or files
       whose names are inconsistent.  */
    
    #ifndef getenv
    extern char *getenv ();
    #endif
    
    #endif /* not __GNU_LIBRARY__ */
    
    #ifdef _LIBC
    /* Stored original parameters.
       XXX This is no good solution.  We should rather copy the args so
       that we can compare them later.  But we must not use malloc(3).  */
    extern int __libc_argc;
    extern char **__libc_argv;
    
    /* Bash 2.0 gives us an environment variable containing flags
       indicating ARGV elements that should not be considered arguments.  */
    
    # ifdef USE_NONOPTION_FLAGS
    /* Defined in getopt_init.c  */
    extern char *__getopt_nonoption_flags;
    # endif
    
    # ifdef USE_NONOPTION_FLAGS
    #  define SWAP_FLAGS(ch1, ch2) \
      if (d->__nonoption_flags_len > 0)					      \
        {									      \
          char __tmp = __getopt_nonoption_flags[ch1];			      \
          __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \
          __getopt_nonoption_flags[ch2] = __tmp;				      \
        }
    # else
    #  define SWAP_FLAGS(ch1, ch2)
    # endif
    #else	/* !_LIBC */
    # define SWAP_FLAGS(ch1, ch2)
    #endif	/* _LIBC */
    
    /* 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 (char **argv, struct _getopt_data *d)
    {
      int bottom = d->__first_nonopt;
      int middle = d->__last_nonopt;
      int top = d->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.  */
    
    #if defined _LIBC && defined USE_NONOPTION_FLAGS
      /* First make sure the handling of the `__getopt_nonoption_flags'
         string can work normally.  Our top argument must be in the range
         of the string.  */
      if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)
        {
          /* We must extend the array.  The user plays games with us and
    	 presents new arguments.  */
          char *new_str = malloc (top + 1);
          if (new_str == NULL)
    	d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
          else
    	{
    	  memset (__mempcpy (new_str, __getopt_nonoption_flags,
    			     d->__nonoption_flags_max_len),
    		  '\0', top + 1 - d->__nonoption_flags_max_len);
    	  d->__nonoption_flags_max_len = top + 1;
    	  __getopt_nonoption_flags = new_str;
    	}
        }
    #endif
    
      while (top > middle && middle > bottom)
        {
          if (top - middle > middle - bottom)
    	{
    	  /* Bottom segment is the short one.  */
    	  int len = middle - bottom;
    	  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;
    	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
    	    }
    	  /* Exclude the moved bottom segment from further swapping.  */
    	  top -= len;
    	}
          else
    	{
    	  /* Top segment is the short one.  */
    	  int len = top - middle;
    	  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;
    	      SWAP_FLAGS (bottom + i, middle + i);
    	    }
    	  /* Exclude the moved top segment from further swapping.  */
    	  bottom += len;
    	}
        }
    
      /* Update records for the slots the non-options now occupy.  */
    
      d->__first_nonopt += (d->optind - d->__last_nonopt);
      d->__last_nonopt = d->optind;
    }
    
    /* Initialize the internal data when the first call is made.  */
    
    static const char *
    _getopt_initialize (int argc, char *const *argv, const char *optstring,
    		    struct _getopt_data *d, int posixly_correct)
    {
      /* 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.  */
    
      d->__first_nonopt = d->__last_nonopt = d->optind;
    
      d->__nextchar = NULL;
    
      d->__posixly_correct = posixly_correct | !!getenv ("POSIXLY_CORRECT");
    
      /* Determine how to handle the ordering of options and nonoptions.  */
    
      if (optstring[0] == '-')
        {
          d->__ordering = RETURN_IN_ORDER;
          ++optstring;
        }
      else if (optstring[0] == '+')
        {
          d->__ordering = REQUIRE_ORDER;
          ++optstring;
        }
      else if (d->__posixly_correct)
        d->__ordering = REQUIRE_ORDER;
      else
        d->__ordering = PERMUTE;
    
    #if defined _LIBC && defined USE_NONOPTION_FLAGS
      if (!d->__posixly_correct
          && argc == __libc_argc && argv == __libc_argv)
        {
          if (d->__nonoption_flags_max_len == 0)
    	{
    	  if (__getopt_nonoption_flags == NULL
    	      || __getopt_nonoption_flags[0] == '\0')
    	    d->__nonoption_flags_max_len = -1;
    	  else
    	    {
    	      const char *orig_str = __getopt_nonoption_flags;
    	      int len = d->__nonoption_flags_max_len = strlen (orig_str);
    	      if (d->__nonoption_flags_max_len < argc)
    		d->__nonoption_flags_max_len = argc;
    	      __getopt_nonoption_flags =
    		(char *) malloc (d->__nonoption_flags_max_len);
    	      if (__getopt_nonoption_flags == NULL)
    		d->__nonoption_flags_max_len = -1;
    	      else
    		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
    			'\0', d->__nonoption_flags_max_len - len);
    	    }
    	}
          d->__nonoption_flags_len = d->__nonoption_flags_max_len;
        }
      else
        d->__nonoption_flags_len = 0;
    #endif
    
      return optstring;
    }
    
    /* 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 -1.
       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_r (int argc, char *const *argv, const char *optstring,
    		    const struct option *longopts, int *longind,
    		    int long_only, struct _getopt_data *d, int posixly_correct)
    {
      int print_errors = d->opterr;
    
      if (argc < 1)
        return -1;
    
      d->optarg = NULL;
    
      if (d->optind == 0 || !d->__initialized)
        {
          if (d->optind == 0)
    	d->optind = 1;	/* Don't scan ARGV[0], the program name.  */
          optstring = _getopt_initialize (argc, argv, optstring, d,
    				      posixly_correct);
          d->__initialized = 1;
        }
      else if (optstring[0] == '-' || optstring[0] == '+')
        optstring++;
      if (optstring[0] == ':')
        print_errors = 0;
    
      /* Test whether ARGV[optind] points to a non-option argument.
         Either it does not have option syntax, or there is an environment flag
         from the shell indicating it is not an option.  The later information
         is only used when the used in the GNU libc.  */
    #if defined _LIBC && defined USE_NONOPTION_FLAGS
    # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
    		      || (d->optind < d->__nonoption_flags_len		      \
    			  && __getopt_nonoption_flags[d->optind] == '1'))
    #else
    # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
    #endif
    
      if (d->__nextchar == NULL || *d->__nextchar == '\0')
        {
          /* Advance to the next ARGV-element.  */
    
          /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
    	 moved back by the user (who may also have changed the arguments).  */
          if (d->__last_nonopt > d->optind)
    	d->__last_nonopt = d->optind;
          if (d->__first_nonopt > d->optind)
    	d->__first_nonopt = d->optind;
    
          if (d->__ordering == PERMUTE)
    	{
    	  /* If we have just processed some options following some non-options,
    	     exchange them so that the options come first.  */
    
    	  if (d->__first_nonopt != d->__last_nonopt
    	      && d->__last_nonopt != d->optind)
    	    exchange ((char **) argv, d);
    	  else if (d->__last_nonopt != d->optind)
    	    d->__first_nonopt = d->optind;
    
    	  /* Skip any additional non-options
    	     and extend the range of non-options previously skipped.  */
    
    	  while (d->optind < argc && NONOPTION_P)
    	    d->optind++;
    	  d->__last_nonopt = d->optind;
    	}
    
          /* The 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 (d->optind != argc && !strcmp (argv[d->optind], "--"))
    	{
    	  d->optind++;
    
    	  if (d->__first_nonopt != d->__last_nonopt
    	      && d->__last_nonopt != d->optind)
    	    exchange ((char **) argv, d);
    	  else if (d->__first_nonopt == d->__last_nonopt)
    	    d->__first_nonopt = d->optind;
    	  d->__last_nonopt = argc;
    
    	  d->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 (d->optind == argc)
    	{
    	  /* Set the next-arg-index to point at the non-options
    	     that we previously skipped, so the caller will digest them.  */
    	  if (d->__first_nonopt != d->__last_nonopt)
    	    d->optind = d->__first_nonopt;
    	  return -1;
    	}
    
          /* 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 (NONOPTION_P)
    	{
    	  if (d->__ordering == REQUIRE_ORDER)
    	    return -1;
    	  d->optarg = argv[d->optind++];
    	  return 1;
    	}
    
          /* We have found another option-ARGV-element.
    	 Skip the initial punctuation.  */
    
          d->__nextchar = (argv[d->optind] + 1
    		  + (longopts != NULL && argv[d->optind][1] == '-'));
        }
    
      /* Decode the current option-ARGV-element.  */
    
      /* Check whether the ARGV-element is a long option.
    
         If long_only and the ARGV-element has the form "-f", where f is
         a valid short option, don't consider it an abbreviated form of
         a long option that starts with f.  Otherwise there would be no
         way to give the -f short option.
    
         On the other hand, if there's a long option "fubar" and
         the ARGV-element is "-fu", do consider that an abbreviation of
         the long option, just like "--fu", and not "-f" with arg "u".
    
         This distinction seems to be the most useful approach.  */
    
      if (longopts != NULL
          && (argv[d->optind][1] == '-'
    	  || (long_only && (argv[d->optind][2]
    			    || !strchr (optstring, argv[d->optind][1])))))
        {
          char *nameend;
          unsigned int namelen;
          const struct option *p;
          const struct option *pfound = NULL;
          struct option_list
          {
    	const struct option *p;
    	struct option_list *next;
          } *ambig_list = NULL;
          int exact = 0;
          int indfound = -1;
          int option_index;
    
          for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
    	/* Do nothing.  */ ;
          namelen = nameend - d->__nextchar;
    
          /* Test all long options for either exact match
    	 or abbreviated matches.  */
          for (p = longopts, option_index = 0; p->name; p++, option_index++)
    	if (!strncmp (p->name, d->__nextchar, namelen))
    	  {
    	    if (namelen == (unsigned int) 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 if (long_only
    		     || pfound->has_arg != p->has_arg
    		     || pfound->flag != p->flag
    		     || pfound->val != p->val)
    	      {
    		/* Second or later nonexact match found.  */
    		struct option_list *newp = alloca (sizeof (*newp));
    		newp->p = p;
    		newp->next = ambig_list;
    		ambig_list = newp;
    	      }
    	  }
    
          if (ambig_list != NULL && !exact)
    	{
    	  if (print_errors)
    	    {
    	      struct option_list first;
    	      first.p = pfound;
    	      first.next = ambig_list;
    	      ambig_list = &first;
    
    #if defined _LIBC
    	      char *buf = NULL;
    	      size_t buflen = 0;
    
    	      FILE *fp = open_memstream (&buf, &buflen);
    	      if (fp != NULL)
    		{
    		  fprintf (fp,
    			   _("%s: option '%s' is ambiguous; possibilities:"),
    			   argv[0], argv[d->optind]);
    
    		  do
    		    {
    		      fprintf (fp, " '--%s'", ambig_list->p->name);
    		      ambig_list = ambig_list->next;
    		    }
    		  while (ambig_list != NULL);
    
    		  fputc_unlocked ('\n', fp);
    
    		  if (__builtin_expect (fclose (fp) != EOF, 1))
    		    {
    		      _IO_flockfile (stderr);
    
    		      int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    		      ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
    
    		      __fxprintf (NULL, "%s", buf);
    
    		      ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    		      _IO_funlockfile (stderr);
    
    		      free (buf);
    		    }
    		}
    #else
    	      fprintf (stderr,
    		       _("%s: option '%s' is ambiguous; possibilities:"),
    		       argv[0], argv[d->optind]);
    	      do
    		{
    		  fprintf (stderr, " '--%s'", ambig_list->p->name);
    		  ambig_list = ambig_list->next;
    		}
    	      while (ambig_list != NULL);
    
    	      fputc ('\n', stderr);
    #endif
    	    }
    	  d->__nextchar += strlen (d->__nextchar);
    	  d->optind++;
    	  d->optopt = 0;
    	  return '?';
    	}
    
          if (pfound != NULL)
    	{
    	  option_index = indfound;
    	  d->optind++;
    	  if (*nameend)
    	    {
    	      /* Don't test has_arg with >, because some C compilers don't
    		 allow it to be used on enums.  */
    	      if (pfound->has_arg)
    		d->optarg = nameend + 1;
    	      else
    		{
    		  if (print_errors)
    		    {
    #if defined _LIBC
    		      char *buf;
    		      int n;
    #endif
    
    		      if (argv[d->optind - 1][1] == '-')
    			{
    			  /* --option */
    #if defined _LIBC
    			  n = __asprintf (&buf, _("\
    %s: option '--%s' doesn't allow an argument\n"),
    					  argv[0], pfound->name);
    #else
    			  fprintf (stderr, _("\
    %s: option '--%s' doesn't allow an argument\n"),
    				   argv[0], pfound->name);
    #endif
    			}
    		      else
    			{
    			  /* +option or -option */
    #if defined _LIBC
    			  n = __asprintf (&buf, _("\
    %s: option '%c%s' doesn't allow an argument\n"),
    					  argv[0], argv[d->optind - 1][0],
    					  pfound->name);
    #else
    			  fprintf (stderr, _("\
    %s: option '%c%s' doesn't allow an argument\n"),
    				   argv[0], argv[d->optind - 1][0],
    				   pfound->name);
    #endif
    			}
    
    #if defined _LIBC
    		      if (n >= 0)
    			{
    			  _IO_flockfile (stderr);
    
    			  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    			  ((_IO_FILE *) stderr)->_flags2
    			    |= _IO_FLAGS2_NOTCANCEL;
    
    			  __fxprintf (NULL, "%s", buf);
    
    			  ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    			  _IO_funlockfile (stderr);
    
    			  free (buf);
    			}
    #endif
    		    }
    
    		  d->__nextchar += strlen (d->__nextchar);
    
    		  d->optopt = pfound->val;
    		  return '?';
    		}
    	    }
    	  else if (pfound->has_arg == 1)
    	    {
    	      if (d->optind < argc)
    		d->optarg = argv[d->optind++];
    	      else
    		{
    		  if (print_errors)
    		    {
    #if defined _LIBC
    		      char *buf;
    
    		      if (__asprintf (&buf, _("\
    %s: option '--%s' requires an argument\n"),
    				      argv[0], pfound->name) >= 0)
    			{
    			  _IO_flockfile (stderr);
    
    			  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    			  ((_IO_FILE *) stderr)->_flags2
    			    |= _IO_FLAGS2_NOTCANCEL;
    
    			  __fxprintf (NULL, "%s", buf);
    
    			  ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    			  _IO_funlockfile (stderr);
    
    			  free (buf);
    			}
    #else
    		      fprintf (stderr,
    			       _("%s: option '--%s' requires an argument\n"),
    			       argv[0], pfound->name);
    #endif
    		    }
    		  d->__nextchar += strlen (d->__nextchar);
    		  d->optopt = pfound->val;
    		  return optstring[0] == ':' ? ':' : '?';
    		}
    	    }
    	  d->__nextchar += strlen (d->__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[d->optind][1] == '-'
    	  || strchr (optstring, *d->__nextchar) == NULL)
    	{
    	  if (print_errors)
    	    {
    #if defined _LIBC
    	      char *buf;
    	      int n;
    #endif
    
    	      if (argv[d->optind][1] == '-')
    		{
    		  /* --option */
    #if defined _LIBC
    		  n = __asprintf (&buf, _("%s: unrecognized option '--%s'\n"),
    				  argv[0], d->__nextchar);
    #else
    		  fprintf (stderr, _("%s: unrecognized option '--%s'\n"),
    			   argv[0], d->__nextchar);
    #endif
    		}
    	      else
    		{
    		  /* +option or -option */
    #if defined _LIBC
    		  n = __asprintf (&buf, _("%s: unrecognized option '%c%s'\n"),
    				  argv[0], argv[d->optind][0], d->__nextchar);
    #else
    		  fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),
    			   argv[0], argv[d->optind][0], d->__nextchar);
    #endif
    		}
    
    #if defined _LIBC
    	      if (n >= 0)
    		{
    		  _IO_flockfile (stderr);
    
    		  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    		  ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
    
    		  __fxprintf (NULL, "%s", buf);
    
    		  ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    		  _IO_funlockfile (stderr);
    
    		  free (buf);
    		}
    #endif
    	    }
    	  d->__nextchar = (char *) "";
    	  d->optind++;
    	  d->optopt = 0;
    	  return '?';
    	}
        }
    
      /* Look at and handle the next short option-character.  */
    
      {
        char c = *d->__nextchar++;
        char *temp = strchr (optstring, c);
    
        /* Increment `optind' when we start to process its last character.  */
        if (*d->__nextchar == '\0')
          ++d->optind;
    
        if (temp == NULL || c == ':' || c == ';')
          {
    	if (print_errors)
    	  {
    #if defined _LIBC
    	    char *buf;
    	    int n;
    #endif
    
    #if defined _LIBC
    	    n = __asprintf (&buf, _("%s: invalid option -- '%c'\n"),
    			    argv[0], c);
    #else
    	    fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);
    #endif
    
    #if defined _LIBC
    	    if (n >= 0)
    	      {
    		_IO_flockfile (stderr);
    
    		int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    		((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
    
    		__fxprintf (NULL, "%s", buf);
    
    		((_IO_FILE *) stderr)->_flags2 = old_flags2;
    		_IO_funlockfile (stderr);
    
    		free (buf);
    	      }
    #endif
    	  }
    	d->optopt = c;
    	return '?';
          }
        /* Convenience. Treat POSIX -W foo same as long option --foo */
        if (temp[0] == 'W' && temp[1] == ';')
          {
    	char *nameend;
    	const struct option *p;
    	const struct option *pfound = NULL;
    	int exact = 0;
    	int ambig = 0;
    	int indfound = 0;
    	int option_index;
    
    	if (longopts == NULL)
    	  goto no_longs;
    
    	/* This is an option that requires an argument.  */
    	if (*d->__nextchar != '\0')
    	  {
    	    d->optarg = d->__nextchar;
    	    /* If we end this ARGV-element by taking the rest as an arg,
    	       we must advance to the next element now.  */
    	    d->optind++;
    	  }
    	else if (d->optind == argc)
    	  {
    	    if (print_errors)
    	      {
    #if defined _LIBC
    		char *buf;
    
    		if (__asprintf (&buf,
    				_("%s: option requires an argument -- '%c'\n"),
    				argv[0], c) >= 0)
    		  {
    		    _IO_flockfile (stderr);
    
    		    int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    		    ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
    
    		    __fxprintf (NULL, "%s", buf);
    
    		    ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    		    _IO_funlockfile (stderr);
    
    		    free (buf);
    		  }
    #else
    		fprintf (stderr,
    			 _("%s: option requires an argument -- '%c'\n"),
    			 argv[0], c);
    #endif
    	      }
    	    d->optopt = c;
    	    if (optstring[0] == ':')
    	      c = ':';
    	    else
    	      c = '?';
    	    return c;
    	  }
    	else
    	  /* We already incremented `d->optind' once;
    	     increment it again when taking next ARGV-elt as argument.  */
    	  d->optarg = argv[d->optind++];
    
    	/* optarg is now the argument, see if it's in the
    	   table of longopts.  */
    
    	for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
    	     nameend++)
    	  /* Do nothing.  */ ;
    
    	/* Test all long options for either exact match
    	   or abbreviated matches.  */
    	for (p = longopts, option_index = 0; p->name; p++, option_index++)
    	  if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
    	    {
    	      if ((unsigned int) (nameend - d->__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 if (long_only
    		       || pfound->has_arg != p->has_arg
    		       || pfound->flag != p->flag
    		       || pfound->val != p->val)
    		/* Second or later nonexact match found.  */
    		ambig = 1;
    	    }
    	if (ambig && !exact)
    	  {
    	    if (print_errors)
    	      {
    #if defined _LIBC
    		char *buf;
    
    		if (__asprintf (&buf, _("%s: option '-W %s' is ambiguous\n"),
    				argv[0], d->optarg) >= 0)
    		  {
    		    _IO_flockfile (stderr);
    
    		    int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    		    ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
    
    		    __fxprintf (NULL, "%s", buf);
    
    		    ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    		    _IO_funlockfile (stderr);
    
    		    free (buf);
    		  }
    #else
    		fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"),
    			 argv[0], d->optarg);
    #endif
    	      }
    	    d->__nextchar += strlen (d->__nextchar);
    	    d->optind++;
    	    return '?';
    	  }
    	if (pfound != NULL)
    	  {
    	    option_index = indfound;
    	    if (*nameend)
    	      {
    		/* Don't test has_arg with >, because some C compilers don't
    		   allow it to be used on enums.  */
    		if (pfound->has_arg)
    		  d->optarg = nameend + 1;
    		else
    		  {
    		    if (print_errors)
    		      {
    #if defined _LIBC
    			char *buf;
    
    			if (__asprintf (&buf, _("\
    %s: option '-W %s' doesn't allow an argument\n"),
    					argv[0], pfound->name) >= 0)
    			  {
    			    _IO_flockfile (stderr);
    
    			    int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    			    ((_IO_FILE *) stderr)->_flags2
    			      |= _IO_FLAGS2_NOTCANCEL;
    
    			    __fxprintf (NULL, "%s", buf);
    
    			    ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    			    _IO_funlockfile (stderr);
    
    			    free (buf);
    			  }
    #else
    			fprintf (stderr, _("\
    %s: option '-W %s' doesn't allow an argument\n"),
    				 argv[0], pfound->name);
    #endif
    		      }
    
    		    d->__nextchar += strlen (d->__nextchar);
    		    return '?';
    		  }
    	      }
    	    else if (pfound->has_arg == 1)
    	      {
    		if (d->optind < argc)
    		  d->optarg = argv[d->optind++];
    		else
    		  {
    		    if (print_errors)
    		      {
    #if defined _LIBC
    			char *buf;
    
    			if (__asprintf (&buf, _("\
    %s: option '-W %s' requires an argument\n"),
    					argv[0], pfound->name) >= 0)
    			  {
    			    _IO_flockfile (stderr);
    
    			    int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    			    ((_IO_FILE *) stderr)->_flags2
    			      |= _IO_FLAGS2_NOTCANCEL;
    
    			    __fxprintf (NULL, "%s", buf);
    
    			    ((_IO_FILE *) stderr)->_flags2 = old_flags2;
    			    _IO_funlockfile (stderr);
    
    			    free (buf);
    			  }
    #else
    			fprintf (stderr, _("\
    %s: option '-W %s' requires an argument\n"),
    				 argv[0], pfound->name);
    #endif
    		      }
    		    d->__nextchar += strlen (d->__nextchar);
    		    return optstring[0] == ':' ? ':' : '?';
    		  }
    	      }
    	    else
    	      d->optarg = NULL;
    	    d->__nextchar += strlen (d->__nextchar);
    	    if (longind != NULL)
    	      *longind = option_index;
    	    if (pfound->flag)
    	      {
    		*(pfound->flag) = pfound->val;
    		return 0;
    	      }
    	    return pfound->val;
    	  }
    
          no_longs:
    	d->__nextchar = NULL;
    	return 'W';	/* Let the application handle it.   */
          }
        if (temp[1] == ':')
          {
    	if (temp[2] == ':')
    	  {
    	    /* This is an option that accepts an argument optionally.  */
    	    if (*d->__nextchar != '\0')
    	      {
    		d->optarg = d->__nextchar;
    		d->optind++;
    	      }
    	    else
    	      d->optarg = NULL;
    	    d->__nextchar = NULL;
    	  }
    	else
    	  {
    	    /* This is an option that requires an argument.  */
    	    if (*d->__nextchar != '\0')
    	      {
    		d->optarg = d->__nextchar;
    		/* If we end this ARGV-element by taking the rest as an arg,
    		   we must advance to the next element now.  */
    		d->optind++;
    	      }
    	    else if (d->optind == argc)
    	      {
    		if (print_errors)
    		  {
    #if defined _LIBC
    		    char *buf;
    
    		    if (__asprintf (&buf, _("\
    %s: option requires an argument -- '%c'\n"),
    				    argv[0], c) >= 0)
    		      {
    			_IO_flockfile (stderr);
    
    			int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
    			((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
    
    			__fxprintf (NULL, "%s", buf);
    
    			((_IO_FILE *) stderr)->_flags2 = old_flags2;
    			_IO_funlockfile (stderr);
    
    			free (buf);
    		      }
    #else
    		    fprintf (stderr,
    			     _("%s: option requires an argument -- '%c'\n"),
    			     argv[0], c);
    #endif
    		  }
    		d->optopt = c;
    		if (optstring[0] == ':')
    		  c = ':';
    		else
    		  c = '?';
    	      }
    	    else
    	      /* We already incremented `optind' once;
    		 increment it again when taking next ARGV-elt as argument.  */
    	      d->optarg = argv[d->optind++];
    	    d->__nextchar = NULL;
    	  }
          }
        return c;
      }
    }
    
    int
    _getopt_internal (int argc, char *const *argv, const char *optstring,
    		  const struct option *longopts, int *longind, int long_only,
    		  int posixly_correct)
    {
      int result;
    
      getopt_data.optind = optind;
      getopt_data.opterr = opterr;
    
      result = _getopt_internal_r (argc, argv, optstring, longopts,
    			       longind, long_only, &getopt_data,
    			       posixly_correct);
    
      optind = getopt_data.optind;
      optarg = getopt_data.optarg;
      optopt = getopt_data.optopt;
    
      return result;
    }
    
    int
    getopt (int argc, char *const *argv, const char *optstring)
    {
      return _getopt_internal (argc, argv, optstring,
    			   (const struct option *) 0,
    			   (int *) 0,
    			   0, 0);
    }
    
    #ifdef _LIBC
    int
    __posix_getopt (int argc, char *const *argv, const char *optstring)
    {
      return _getopt_internal (argc, argv, optstring,
    			   (const struct option *) 0,
    			   (int *) 0,
    			   0, 1);
    }
    #endif
    
    #endif	/* Not ELIDE_CODE.  */
    
    #ifdef TEST
    
    /* Compile with -DTEST to make an executable for use in testing
       the above definition of `getopt'.  */
    
    int
    main (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 == -1)
    	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 */