rlm@1: /* Getopt for GNU.
rlm@1:    NOTE: getopt is now part of the C library, so if you don't know what
rlm@1:    "Keep this file name-space clean" means, talk to drepper@gnu.org
rlm@1:    before changing it!
rlm@1: 
rlm@1:    Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
rlm@1:    	Free Software Foundation, Inc.
rlm@1: 
rlm@1:    NOTE: This source is derived from an old version taken from the GNU C
rlm@1:    Library (glibc).
rlm@1: 
rlm@1:    This program is free software; you can redistribute it and/or modify it
rlm@1:    under the terms of the GNU General Public License as published by the
rlm@1:    Free Software Foundation; either version 2, or (at your option) any
rlm@1:    later version.
rlm@1: 
rlm@1:    This program is distributed in the hope that it will be useful,
rlm@1:    but WITHOUT ANY WARRANTY; without even the implied warranty of
rlm@1:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
rlm@1:    GNU General Public License for more details.
rlm@1: 
rlm@1:    You should have received a copy of the GNU General Public License
rlm@1:    along with this program; if not, write to the Free Software
rlm@1:    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
rlm@1:    USA.  */
rlm@1: 
rlm@1: /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
rlm@1:    Ditto for AIX 3.2 and <stdlib.h>.  */
rlm@1: #ifndef _NO_PROTO
rlm@1: # define _NO_PROTO
rlm@1: #endif
rlm@1: 
rlm@1: #ifdef HAVE_CONFIG_H
rlm@1: # include <config.h>
rlm@1: #endif
rlm@1: 
rlm@1: #if !defined __STDC__ || !__STDC__
rlm@1: /* This is a separate conditional since some stdc systems
rlm@1:    reject `defined (const)'.  */
rlm@1: # ifndef const
rlm@1: #  define const
rlm@1: # endif
rlm@1: #endif
rlm@1: 
rlm@1: #include <stdio.h>
rlm@1: 
rlm@1: /* Comment out all this code if we are using the GNU C Library, and are not
rlm@1:    actually compiling the library itself.  This code is part of the GNU C
rlm@1:    Library, but also included in many other GNU distributions.  Compiling
rlm@1:    and linking in this code is a waste when using the GNU C library
rlm@1:    (especially if it is a shared library).  Rather than having every GNU
rlm@1:    program understand `configure --with-gnu-libc' and omit the object files,
rlm@1:    it is simpler to just do this in the source for each such file.  */
rlm@1: 
rlm@1: #define GETOPT_INTERFACE_VERSION 2
rlm@1: #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
rlm@1: # include <gnu-versions.h>
rlm@1: # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
rlm@1: #  define ELIDE_CODE
rlm@1: # endif
rlm@1: #endif
rlm@1: 
rlm@1: #ifndef ELIDE_CODE
rlm@1: 
rlm@1: 
rlm@1: /* This needs to come after some library #include
rlm@1:    to get __GNU_LIBRARY__ defined.  */
rlm@1: #ifdef	__GNU_LIBRARY__
rlm@1: /* Don't include stdlib.h for non-GNU C libraries because some of them
rlm@1:    contain conflicting prototypes for getopt.  */
rlm@1: # include <stdlib.h>
rlm@1: # include <unistd.h>
rlm@1: #endif	/* GNU C library.  */
rlm@1: 
rlm@1: #ifdef VMS
rlm@1: # include <unixlib.h>
rlm@1: # if HAVE_STRING_H - 0
rlm@1: #  include <string.h>
rlm@1: # endif
rlm@1: #endif
rlm@1: 
rlm@1: #ifndef _
rlm@1: /* This is for other GNU distributions with internationalized messages.
rlm@1:    When compiling libc, the _ macro is predefined.  */
rlm@1: # ifdef HAVE_LIBINTL_H
rlm@1: #  include <libintl.h>
rlm@1: #  define _(msgid)	gettext (msgid)
rlm@1: # else
rlm@1: #  define _(msgid)	(msgid)
rlm@1: # endif
rlm@1: #endif
rlm@1: 
rlm@1: #ifdef _MSC_VER
rlm@1: #include <string.h>
rlm@1: #endif
rlm@1: 
rlm@1: /* This version of `getopt' appears to the caller like standard Unix `getopt'
rlm@1:    but it behaves differently for the user, since it allows the user
rlm@1:    to intersperse the options with the other arguments.
rlm@1: 
rlm@1:    As `getopt' works, it permutes the elements of ARGV so that,
rlm@1:    when it is done, all the options precede everything else.  Thus
rlm@1:    all application programs are extended to handle flexible argument order.
rlm@1: 
rlm@1:    Setting the environment variable POSIXLY_CORRECT disables permutation.
rlm@1:    Then the behavior is completely standard.
rlm@1: 
rlm@1:    GNU application programs can use a third alternative mode in which
rlm@1:    they can distinguish the relative order of options and other arguments.  */
rlm@1: 
rlm@1: #include "getopt.h"
rlm@1: 
rlm@1: /* For communication from `getopt' to the caller.
rlm@1:    When `getopt' finds an option that takes an argument,
rlm@1:    the argument value is returned here.
rlm@1:    Also, when `ordering' is RETURN_IN_ORDER,
rlm@1:    each non-option ARGV-element is returned here.  */
rlm@1: 
rlm@1: char *optarg = NULL;
rlm@1: 
rlm@1: /* Index in ARGV of the next element to be scanned.
rlm@1:    This is used for communication to and from the caller
rlm@1:    and for communication between successive calls to `getopt'.
rlm@1: 
rlm@1:    On entry to `getopt', zero means this is the first call; initialize.
rlm@1: 
rlm@1:    When `getopt' returns -1, this is the index of the first of the
rlm@1:    non-option elements that the caller should itself scan.
rlm@1: 
rlm@1:    Otherwise, `optind' communicates from one call to the next
rlm@1:    how much of ARGV has been scanned so far.  */
rlm@1: 
rlm@1: /* 1003.2 says this must be 1 before any call.  */
rlm@1: int optind = 1;
rlm@1: 
rlm@1: /* Formerly, initialization of getopt depended on optind==0, which
rlm@1:    causes problems with re-calling getopt as programs generally don't
rlm@1:    know that. */
rlm@1: 
rlm@1: int __getopt_initialized = 0;
rlm@1: 
rlm@1: /* The next char to be scanned in the option-element
rlm@1:    in which the last option character we returned was found.
rlm@1:    This allows us to pick up the scan where we left off.
rlm@1: 
rlm@1:    If this is zero, or a null string, it means resume the scan
rlm@1:    by advancing to the next ARGV-element.  */
rlm@1: 
rlm@1: static char *nextchar;
rlm@1: 
rlm@1: /* Callers store zero here to inhibit the error message
rlm@1:    for unrecognized options.  */
rlm@1: 
rlm@1: int opterr = 1;
rlm@1: 
rlm@1: /* Set to an option character which was unrecognized.
rlm@1:    This must be initialized on some systems to avoid linking in the
rlm@1:    system's own getopt implementation.  */
rlm@1: 
rlm@1: int optopt = '?';
rlm@1: 
rlm@1: /* Describe how to deal with options that follow non-option ARGV-elements.
rlm@1: 
rlm@1:    If the caller did not specify anything,
rlm@1:    the default is REQUIRE_ORDER if the environment variable
rlm@1:    POSIXLY_CORRECT is defined, PERMUTE otherwise.
rlm@1: 
rlm@1:    REQUIRE_ORDER means don't recognize them as options;
rlm@1:    stop option processing when the first non-option is seen.
rlm@1:    This is what Unix does.
rlm@1:    This mode of operation is selected by either setting the environment
rlm@1:    variable POSIXLY_CORRECT, or using `+' as the first character
rlm@1:    of the list of option characters.
rlm@1: 
rlm@1:    PERMUTE is the default.  We permute the contents of ARGV as we scan,
rlm@1:    so that eventually all the non-options are at the end.  This allows options
rlm@1:    to be given in any order, even with programs that were not written to
rlm@1:    expect this.
rlm@1: 
rlm@1:    RETURN_IN_ORDER is an option available to programs that were written
rlm@1:    to expect options and other ARGV-elements in any order and that care about
rlm@1:    the ordering of the two.  We describe each non-option ARGV-element
rlm@1:    as if it were the argument of an option with character code 1.
rlm@1:    Using `-' as the first character of the list of option characters
rlm@1:    selects this mode of operation.
rlm@1: 
rlm@1:    The special argument `--' forces an end of option-scanning regardless
rlm@1:    of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
rlm@1:    `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
rlm@1: 
rlm@1: static enum
rlm@1: {
rlm@1:   REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
rlm@1: } ordering;
rlm@1: 
rlm@1: /* Value of POSIXLY_CORRECT environment variable.  */
rlm@1: static char *posixly_correct;
rlm@1: 
rlm@1: #ifdef	__GNU_LIBRARY__
rlm@1: /* We want to avoid inclusion of string.h with non-GNU libraries
rlm@1:    because there are many ways it can cause trouble.
rlm@1:    On some systems, it contains special magic macros that don't work
rlm@1:    in GCC.  */
rlm@1: # include <string.h>
rlm@1: # define my_index	strchr
rlm@1: #else
rlm@1: 
rlm@1: # if HAVE_STRING_H
rlm@1: #  include <string.h>
rlm@1: # else
rlm@1: #  if HAVE_STRINGS_H
rlm@1: #   include <strings.h>
rlm@1: #  endif
rlm@1: # endif
rlm@1: 
rlm@1: /* Avoid depending on library functions or files
rlm@1:    whose names are inconsistent.  */
rlm@1: 
rlm@1: #ifndef getenv
rlm@1: extern char *getenv ();
rlm@1: #endif
rlm@1: 
rlm@1: static char *
rlm@1: my_index (str, chr)
rlm@1:      const char *str;
rlm@1:      int chr;
rlm@1: {
rlm@1:   while (*str)
rlm@1:     {
rlm@1:       if (*str == chr)
rlm@1: 	return (char *) str;
rlm@1:       str++;
rlm@1:     }
rlm@1:   return 0;
rlm@1: }
rlm@1: 
rlm@1: /* If using GCC, we can safely declare strlen this way.
rlm@1:    If not using GCC, it is ok not to declare it.  */
rlm@1: #ifdef __GNUC__
rlm@1: /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
rlm@1:    That was relevant to code that was here before.  */
rlm@1: # if (!defined __STDC__ || !__STDC__) && !defined strlen
rlm@1: /* gcc with -traditional declares the built-in strlen to return int,
rlm@1:    and has done so at least since version 2.4.5. -- rms.  */
rlm@1: extern int strlen (const char *);
rlm@1: # endif /* not __STDC__ */
rlm@1: #endif /* __GNUC__ */
rlm@1: 
rlm@1: #endif /* not __GNU_LIBRARY__ */
rlm@1: 
rlm@1: /* Handle permutation of arguments.  */
rlm@1: 
rlm@1: /* Describe the part of ARGV that contains non-options that have
rlm@1:    been skipped.  `first_nonopt' is the index in ARGV of the first of them;
rlm@1:    `last_nonopt' is the index after the last of them.  */
rlm@1: 
rlm@1: static int first_nonopt;
rlm@1: static int last_nonopt;
rlm@1: 
rlm@1: #ifdef _LIBC
rlm@1: /* Bash 2.0 gives us an environment variable containing flags
rlm@1:    indicating ARGV elements that should not be considered arguments.  */
rlm@1: 
rlm@1: /* Defined in getopt_init.c  */
rlm@1: extern char *__getopt_nonoption_flags;
rlm@1: 
rlm@1: static int nonoption_flags_max_len;
rlm@1: static int nonoption_flags_len;
rlm@1: 
rlm@1: static int original_argc;
rlm@1: static char *const *original_argv;
rlm@1: 
rlm@1: /* Make sure the environment variable bash 2.0 puts in the environment
rlm@1:    is valid for the getopt call we must make sure that the ARGV passed
rlm@1:    to getopt is that one passed to the process.  */
rlm@1: static void
rlm@1: __attribute__ ((unused))
rlm@1: store_args_and_env (int argc, char *const *argv)
rlm@1: {
rlm@1:   /* XXX This is no good solution.  We should rather copy the args so
rlm@1:      that we can compare them later.  But we must not use malloc(3).  */
rlm@1:   original_argc = argc;
rlm@1:   original_argv = argv;
rlm@1: }
rlm@1: # ifdef text_set_element
rlm@1: text_set_element (__libc_subinit, store_args_and_env);
rlm@1: # endif /* text_set_element */
rlm@1: 
rlm@1: # define SWAP_FLAGS(ch1, ch2) \
rlm@1:   if (nonoption_flags_len > 0)						      \
rlm@1:     {									      \
rlm@1:       char __tmp = __getopt_nonoption_flags[ch1];			      \
rlm@1:       __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \
rlm@1:       __getopt_nonoption_flags[ch2] = __tmp;				      \
rlm@1:     }
rlm@1: #else	/* !_LIBC */
rlm@1: # define SWAP_FLAGS(ch1, ch2)
rlm@1: #endif	/* _LIBC */
rlm@1: 
rlm@1: /* Exchange two adjacent subsequences of ARGV.
rlm@1:    One subsequence is elements [first_nonopt,last_nonopt)
rlm@1:    which contains all the non-options that have been skipped so far.
rlm@1:    The other is elements [last_nonopt,optind), which contains all
rlm@1:    the options processed since those non-options were skipped.
rlm@1: 
rlm@1:    `first_nonopt' and `last_nonopt' are relocated so that they describe
rlm@1:    the new indices of the non-options in ARGV after they are moved.  */
rlm@1: 
rlm@1: #if defined __STDC__ && __STDC__
rlm@1: static void exchange (char **);
rlm@1: #endif
rlm@1: 
rlm@1: static void
rlm@1: exchange (argv)
rlm@1:      char **argv;
rlm@1: {
rlm@1:   int bottom = first_nonopt;
rlm@1:   int middle = last_nonopt;
rlm@1:   int top = optind;
rlm@1:   char *tem;
rlm@1: 
rlm@1:   /* Exchange the shorter segment with the far end of the longer segment.
rlm@1:      That puts the shorter segment into the right place.
rlm@1:      It leaves the longer segment in the right place overall,
rlm@1:      but it consists of two parts that need to be swapped next.  */
rlm@1: 
rlm@1: #ifdef _LIBC
rlm@1:   /* First make sure the handling of the `__getopt_nonoption_flags'
rlm@1:      string can work normally.  Our top argument must be in the range
rlm@1:      of the string.  */
rlm@1:   if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
rlm@1:     {
rlm@1:       /* We must extend the array.  The user plays games with us and
rlm@1: 	 presents new arguments.  */
rlm@1:       char *new_str = malloc (top + 1);
rlm@1:       if (new_str == NULL)
rlm@1: 	nonoption_flags_len = nonoption_flags_max_len = 0;
rlm@1:       else
rlm@1: 	{
rlm@1: 	  memset (__mempcpy (new_str, __getopt_nonoption_flags,
rlm@1: 			     nonoption_flags_max_len),
rlm@1: 		  '\0', top + 1 - nonoption_flags_max_len);
rlm@1: 	  nonoption_flags_max_len = top + 1;
rlm@1: 	  __getopt_nonoption_flags = new_str;
rlm@1: 	}
rlm@1:     }
rlm@1: #endif
rlm@1: 
rlm@1:   while (top > middle && middle > bottom)
rlm@1:     {
rlm@1:       if (top - middle > middle - bottom)
rlm@1: 	{
rlm@1: 	  /* Bottom segment is the short one.  */
rlm@1: 	  int len = middle - bottom;
rlm@1: 	  register int i;
rlm@1: 
rlm@1: 	  /* Swap it with the top part of the top segment.  */
rlm@1: 	  for (i = 0; i < len; i++)
rlm@1: 	    {
rlm@1: 	      tem = argv[bottom + i];
rlm@1: 	      argv[bottom + i] = argv[top - (middle - bottom) + i];
rlm@1: 	      argv[top - (middle - bottom) + i] = tem;
rlm@1: 	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
rlm@1: 	    }
rlm@1: 	  /* Exclude the moved bottom segment from further swapping.  */
rlm@1: 	  top -= len;
rlm@1: 	}
rlm@1:       else
rlm@1: 	{
rlm@1: 	  /* Top segment is the short one.  */
rlm@1: 	  int len = top - middle;
rlm@1: 	  register int i;
rlm@1: 
rlm@1: 	  /* Swap it with the bottom part of the bottom segment.  */
rlm@1: 	  for (i = 0; i < len; i++)
rlm@1: 	    {
rlm@1: 	      tem = argv[bottom + i];
rlm@1: 	      argv[bottom + i] = argv[middle + i];
rlm@1: 	      argv[middle + i] = tem;
rlm@1: 	      SWAP_FLAGS (bottom + i, middle + i);
rlm@1: 	    }
rlm@1: 	  /* Exclude the moved top segment from further swapping.  */
rlm@1: 	  bottom += len;
rlm@1: 	}
rlm@1:     }
rlm@1: 
rlm@1:   /* Update records for the slots the non-options now occupy.  */
rlm@1: 
rlm@1:   first_nonopt += (optind - last_nonopt);
rlm@1:   last_nonopt = optind;
rlm@1: }
rlm@1: 
rlm@1: /* Initialize the internal data when the first call is made.  */
rlm@1: 
rlm@1: #if defined __STDC__ && __STDC__
rlm@1: static const char *_getopt_initialize (int, char *const *, const char *);
rlm@1: #endif
rlm@1: static const char *
rlm@1: _getopt_initialize (argc, argv, optstring)
rlm@1:      int argc;
rlm@1:      char *const *argv;
rlm@1:      const char *optstring;
rlm@1: {
rlm@1:   /* Start processing options with ARGV-element 1 (since ARGV-element 0
rlm@1:      is the program name); the sequence of previously skipped
rlm@1:      non-option ARGV-elements is empty.  */
rlm@1: 
rlm@1:   first_nonopt = last_nonopt = optind;
rlm@1: 
rlm@1:   nextchar = NULL;
rlm@1: 
rlm@1:   posixly_correct = getenv ("POSIXLY_CORRECT");
rlm@1: 
rlm@1:   /* Determine how to handle the ordering of options and nonoptions.  */
rlm@1: 
rlm@1:   if (optstring[0] == '-')
rlm@1:     {
rlm@1:       ordering = RETURN_IN_ORDER;
rlm@1:       ++optstring;
rlm@1:     }
rlm@1:   else if (optstring[0] == '+')
rlm@1:     {
rlm@1:       ordering = REQUIRE_ORDER;
rlm@1:       ++optstring;
rlm@1:     }
rlm@1:   else if (posixly_correct != NULL)
rlm@1:     ordering = REQUIRE_ORDER;
rlm@1:   else
rlm@1:     ordering = PERMUTE;
rlm@1: 
rlm@1: #ifdef _LIBC
rlm@1:   if (posixly_correct == NULL
rlm@1:       && argc == original_argc && argv == original_argv)
rlm@1:     {
rlm@1:       if (nonoption_flags_max_len == 0)
rlm@1: 	{
rlm@1: 	  if (__getopt_nonoption_flags == NULL
rlm@1: 	      || __getopt_nonoption_flags[0] == '\0')
rlm@1: 	    nonoption_flags_max_len = -1;
rlm@1: 	  else
rlm@1: 	    {
rlm@1: 	      const char *orig_str = __getopt_nonoption_flags;
rlm@1: 	      int len = nonoption_flags_max_len = strlen (orig_str);
rlm@1: 	      if (nonoption_flags_max_len < argc)
rlm@1: 		nonoption_flags_max_len = argc;
rlm@1: 	      __getopt_nonoption_flags =
rlm@1: 		(char *) malloc (nonoption_flags_max_len);
rlm@1: 	      if (__getopt_nonoption_flags == NULL)
rlm@1: 		nonoption_flags_max_len = -1;
rlm@1: 	      else
rlm@1: 		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
rlm@1: 			'\0', nonoption_flags_max_len - len);
rlm@1: 	    }
rlm@1: 	}
rlm@1:       nonoption_flags_len = nonoption_flags_max_len;
rlm@1:     }
rlm@1:   else
rlm@1:     nonoption_flags_len = 0;
rlm@1: #endif
rlm@1: 
rlm@1:   return optstring;
rlm@1: }
rlm@1: 
rlm@1: /* Scan elements of ARGV (whose length is ARGC) for option characters
rlm@1:    given in OPTSTRING.
rlm@1: 
rlm@1:    If an element of ARGV starts with '-', and is not exactly "-" or "--",
rlm@1:    then it is an option element.  The characters of this element
rlm@1:    (aside from the initial '-') are option characters.  If `getopt'
rlm@1:    is called repeatedly, it returns successively each of the option characters
rlm@1:    from each of the option elements.
rlm@1: 
rlm@1:    If `getopt' finds another option character, it returns that character,
rlm@1:    updating `optind' and `nextchar' so that the next call to `getopt' can
rlm@1:    resume the scan with the following option character or ARGV-element.
rlm@1: 
rlm@1:    If there are no more option characters, `getopt' returns -1.
rlm@1:    Then `optind' is the index in ARGV of the first ARGV-element
rlm@1:    that is not an option.  (The ARGV-elements have been permuted
rlm@1:    so that those that are not options now come last.)
rlm@1: 
rlm@1:    OPTSTRING is a string containing the legitimate option characters.
rlm@1:    If an option character is seen that is not listed in OPTSTRING,
rlm@1:    return '?' after printing an error message.  If you set `opterr' to
rlm@1:    zero, the error message is suppressed but we still return '?'.
rlm@1: 
rlm@1:    If a char in OPTSTRING is followed by a colon, that means it wants an arg,
rlm@1:    so the following text in the same ARGV-element, or the text of the following
rlm@1:    ARGV-element, is returned in `optarg'.  Two colons mean an option that
rlm@1:    wants an optional arg; if there is text in the current ARGV-element,
rlm@1:    it is returned in `optarg', otherwise `optarg' is set to zero.
rlm@1: 
rlm@1:    If OPTSTRING starts with `-' or `+', it requests different methods of
rlm@1:    handling the non-option ARGV-elements.
rlm@1:    See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
rlm@1: 
rlm@1:    Long-named options begin with `--' instead of `-'.
rlm@1:    Their names may be abbreviated as long as the abbreviation is unique
rlm@1:    or is an exact match for some defined option.  If they have an
rlm@1:    argument, it follows the option name in the same ARGV-element, separated
rlm@1:    from the option name by a `=', or else the in next ARGV-element.
rlm@1:    When `getopt' finds a long-named option, it returns 0 if that option's
rlm@1:    `flag' field is nonzero, the value of the option's `val' field
rlm@1:    if the `flag' field is zero.
rlm@1: 
rlm@1:    The elements of ARGV aren't really const, because we permute them.
rlm@1:    But we pretend they're const in the prototype to be compatible
rlm@1:    with other systems.
rlm@1: 
rlm@1:    LONGOPTS is a vector of `struct option' terminated by an
rlm@1:    element containing a name which is zero.
rlm@1: 
rlm@1:    LONGIND returns the index in LONGOPT of the long-named option found.
rlm@1:    It is only valid when a long-named option has been found by the most
rlm@1:    recent call.
rlm@1: 
rlm@1:    If LONG_ONLY is nonzero, '-' as well as '--' can introduce
rlm@1:    long-named options.  */
rlm@1: 
rlm@1: int
rlm@1: _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
rlm@1:      int argc;
rlm@1:      char *const *argv;
rlm@1:      const char *optstring;
rlm@1:      const struct option *longopts;
rlm@1:      int *longind;
rlm@1:      int long_only;
rlm@1: {
rlm@1:   optarg = NULL;
rlm@1: 
rlm@1:   if (optind == 0 || !__getopt_initialized)
rlm@1:     {
rlm@1:       if (optind == 0)
rlm@1: 	optind = 1;	/* Don't scan ARGV[0], the program name.  */
rlm@1:       optstring = _getopt_initialize (argc, argv, optstring);
rlm@1:       __getopt_initialized = 1;
rlm@1:     }
rlm@1: 
rlm@1:   /* Test whether ARGV[optind] points to a non-option argument.
rlm@1:      Either it does not have option syntax, or there is an environment flag
rlm@1:      from the shell indicating it is not an option.  The later information
rlm@1:      is only used when the used in the GNU libc.  */
rlm@1: #ifdef _LIBC
rlm@1: # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0'	      \
rlm@1: 		      || (optind < nonoption_flags_len			      \
rlm@1: 			  && __getopt_nonoption_flags[optind] == '1'))
rlm@1: #else
rlm@1: # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
rlm@1: #endif
rlm@1: 
rlm@1:   if (nextchar == NULL || *nextchar == '\0')
rlm@1:     {
rlm@1:       /* Advance to the next ARGV-element.  */
rlm@1: 
rlm@1:       /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
rlm@1: 	 moved back by the user (who may also have changed the arguments).  */
rlm@1:       if (last_nonopt > optind)
rlm@1: 	last_nonopt = optind;
rlm@1:       if (first_nonopt > optind)
rlm@1: 	first_nonopt = optind;
rlm@1: 
rlm@1:       if (ordering == PERMUTE)
rlm@1: 	{
rlm@1: 	  /* If we have just processed some options following some non-options,
rlm@1: 	     exchange them so that the options come first.  */
rlm@1: 
rlm@1: 	  if (first_nonopt != last_nonopt && last_nonopt != optind)
rlm@1: 	    exchange ((char **) argv);
rlm@1: 	  else if (last_nonopt != optind)
rlm@1: 	    first_nonopt = optind;
rlm@1: 
rlm@1: 	  /* Skip any additional non-options
rlm@1: 	     and extend the range of non-options previously skipped.  */
rlm@1: 
rlm@1: 	  while (optind < argc && NONOPTION_P)
rlm@1: 	    optind++;
rlm@1: 	  last_nonopt = optind;
rlm@1: 	}
rlm@1: 
rlm@1:       /* The special ARGV-element `--' means premature end of options.
rlm@1: 	 Skip it like a null option,
rlm@1: 	 then exchange with previous non-options as if it were an option,
rlm@1: 	 then skip everything else like a non-option.  */
rlm@1: 
rlm@1:       if (optind != argc && !strcmp (argv[optind], "--"))
rlm@1: 	{
rlm@1: 	  optind++;
rlm@1: 
rlm@1: 	  if (first_nonopt != last_nonopt && last_nonopt != optind)
rlm@1: 	    exchange ((char **) argv);
rlm@1: 	  else if (first_nonopt == last_nonopt)
rlm@1: 	    first_nonopt = optind;
rlm@1: 	  last_nonopt = argc;
rlm@1: 
rlm@1: 	  optind = argc;
rlm@1: 	}
rlm@1: 
rlm@1:       /* If we have done all the ARGV-elements, stop the scan
rlm@1: 	 and back over any non-options that we skipped and permuted.  */
rlm@1: 
rlm@1:       if (optind == argc)
rlm@1: 	{
rlm@1: 	  /* Set the next-arg-index to point at the non-options
rlm@1: 	     that we previously skipped, so the caller will digest them.  */
rlm@1: 	  if (first_nonopt != last_nonopt)
rlm@1: 	    optind = first_nonopt;
rlm@1: 	  return -1;
rlm@1: 	}
rlm@1: 
rlm@1:       /* If we have come to a non-option and did not permute it,
rlm@1: 	 either stop the scan or describe it to the caller and pass it by.  */
rlm@1: 
rlm@1:       if (NONOPTION_P)
rlm@1: 	{
rlm@1: 	  if (ordering == REQUIRE_ORDER)
rlm@1: 	    return -1;
rlm@1: 	  optarg = argv[optind++];
rlm@1: 	  return 1;
rlm@1: 	}
rlm@1: 
rlm@1:       /* We have found another option-ARGV-element.
rlm@1: 	 Skip the initial punctuation.  */
rlm@1: 
rlm@1:       nextchar = (argv[optind] + 1
rlm@1: 		  + (longopts != NULL && argv[optind][1] == '-'));
rlm@1:     }
rlm@1: 
rlm@1:   /* Decode the current option-ARGV-element.  */
rlm@1: 
rlm@1:   /* Check whether the ARGV-element is a long option.
rlm@1: 
rlm@1:      If long_only and the ARGV-element has the form "-f", where f is
rlm@1:      a valid short option, don't consider it an abbreviated form of
rlm@1:      a long option that starts with f.  Otherwise there would be no
rlm@1:      way to give the -f short option.
rlm@1: 
rlm@1:      On the other hand, if there's a long option "fubar" and
rlm@1:      the ARGV-element is "-fu", do consider that an abbreviation of
rlm@1:      the long option, just like "--fu", and not "-f" with arg "u".
rlm@1: 
rlm@1:      This distinction seems to be the most useful approach.  */
rlm@1: 
rlm@1:   if (longopts != NULL
rlm@1:       && (argv[optind][1] == '-'
rlm@1: 	  || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
rlm@1:     {
rlm@1:       char *nameend;
rlm@1:       const struct option *p;
rlm@1:       const struct option *pfound = NULL;
rlm@1:       int exact = 0;
rlm@1:       int ambig = 0;
rlm@1:       int indfound = -1;
rlm@1:       int option_index;
rlm@1: 
rlm@1:       for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
rlm@1: 	/* Do nothing.  */ ;
rlm@1: 
rlm@1:       /* Test all long options for either exact match
rlm@1: 	 or abbreviated matches.  */
rlm@1:       for (p = longopts, option_index = 0; p->name; p++, option_index++)
rlm@1: 	if (!strncmp (p->name, nextchar, nameend - nextchar))
rlm@1: 	  {
rlm@1: 	    if ((unsigned int) (nameend - nextchar)
rlm@1: 		== (unsigned int) strlen (p->name))
rlm@1: 	      {
rlm@1: 		/* Exact match found.  */
rlm@1: 		pfound = p;
rlm@1: 		indfound = option_index;
rlm@1: 		exact = 1;
rlm@1: 		break;
rlm@1: 	      }
rlm@1: 	    else if (pfound == NULL)
rlm@1: 	      {
rlm@1: 		/* First nonexact match found.  */
rlm@1: 		pfound = p;
rlm@1: 		indfound = option_index;
rlm@1: 	      }
rlm@1: 	    else
rlm@1: 	      /* Second or later nonexact match found.  */
rlm@1: 	      ambig = 1;
rlm@1: 	  }
rlm@1: 
rlm@1:       if (ambig && !exact)
rlm@1: 	{
rlm@1: 	  if (opterr)
rlm@1: 	    fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
rlm@1: 		     argv[0], argv[optind]);
rlm@1: 	  nextchar += strlen (nextchar);
rlm@1: 	  optind++;
rlm@1: 	  optopt = 0;
rlm@1: 	  return '?';
rlm@1: 	}
rlm@1: 
rlm@1:       if (pfound != NULL)
rlm@1: 	{
rlm@1: 	  option_index = indfound;
rlm@1: 	  optind++;
rlm@1: 	  if (*nameend)
rlm@1: 	    {
rlm@1: 	      /* Don't test has_arg with >, because some C compilers don't
rlm@1: 		 allow it to be used on enums.  */
rlm@1: 	      if (pfound->has_arg)
rlm@1: 		optarg = nameend + 1;
rlm@1: 	      else
rlm@1: 		{
rlm@1: 		  if (opterr)
rlm@1: 		    {
rlm@1: 		      if (argv[optind - 1][1] == '-')
rlm@1: 			/* --option */
rlm@1: 			fprintf (stderr,
rlm@1: 				 _("%s: option `--%s' doesn't allow an argument\n"),
rlm@1: 				 argv[0], pfound->name);
rlm@1: 		      else
rlm@1: 			/* +option or -option */
rlm@1: 			fprintf (stderr,
rlm@1: 				 _("%s: option `%c%s' doesn't allow an argument\n"),
rlm@1: 				 argv[0], argv[optind - 1][0], pfound->name);
rlm@1: 
rlm@1: 		      nextchar += strlen (nextchar);
rlm@1: 
rlm@1: 		      optopt = pfound->val;
rlm@1: 		      return '?';
rlm@1: 		    }
rlm@1: 		}
rlm@1: 	    }
rlm@1: 	  else if (pfound->has_arg == 1)
rlm@1: 	    {
rlm@1: 	      if (optind < argc)
rlm@1: 		optarg = argv[optind++];
rlm@1: 	      else
rlm@1: 		{
rlm@1: 		  if (opterr)
rlm@1: 		    fprintf (stderr,
rlm@1: 			   _("%s: option `%s' requires an argument\n"),
rlm@1: 			   argv[0], argv[optind - 1]);
rlm@1: 		  nextchar += strlen (nextchar);
rlm@1: 		  optopt = pfound->val;
rlm@1: 		  return optstring[0] == ':' ? ':' : '?';
rlm@1: 		}
rlm@1: 	    }
rlm@1: 	  nextchar += strlen (nextchar);
rlm@1: 	  if (longind != NULL)
rlm@1: 	    *longind = option_index;
rlm@1: 	  if (pfound->flag)
rlm@1: 	    {
rlm@1: 	      *(pfound->flag) = pfound->val;
rlm@1: 	      return 0;
rlm@1: 	    }
rlm@1: 	  return pfound->val;
rlm@1: 	}
rlm@1: 
rlm@1:       /* Can't find it as a long option.  If this is not getopt_long_only,
rlm@1: 	 or the option starts with '--' or is not a valid short
rlm@1: 	 option, then it's an error.
rlm@1: 	 Otherwise interpret it as a short option.  */
rlm@1:       if (!long_only || argv[optind][1] == '-'
rlm@1: 	  || my_index (optstring, *nextchar) == NULL)
rlm@1: 	{
rlm@1: 	  if (opterr)
rlm@1: 	    {
rlm@1: 	      if (argv[optind][1] == '-')
rlm@1: 		/* --option */
rlm@1: 		fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
rlm@1: 			 argv[0], nextchar);
rlm@1: 	      else
rlm@1: 		/* +option or -option */
rlm@1: 		fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
rlm@1: 			 argv[0], argv[optind][0], nextchar);
rlm@1: 	    }
rlm@1: 	  nextchar = (char *) "";
rlm@1: 	  optind++;
rlm@1: 	  optopt = 0;
rlm@1: 	  return '?';
rlm@1: 	}
rlm@1:     }
rlm@1: 
rlm@1:   /* Look at and handle the next short option-character.  */
rlm@1: 
rlm@1:   {
rlm@1:     char c = *nextchar++;
rlm@1:     char *temp = my_index (optstring, c);
rlm@1: 
rlm@1:     /* Increment `optind' when we start to process its last character.  */
rlm@1:     if (*nextchar == '\0')
rlm@1:       ++optind;
rlm@1: 
rlm@1:     if (temp == NULL || c == ':')
rlm@1:       {
rlm@1: 	if (opterr)
rlm@1: 	  {
rlm@1: 	    if (posixly_correct)
rlm@1: 	      /* 1003.2 specifies the format of this message.  */
rlm@1: 	      fprintf (stderr, _("%s: illegal option -- %c\n"),
rlm@1: 		       argv[0], c);
rlm@1: 	    else
rlm@1: 	      fprintf (stderr, _("%s: invalid option -- %c\n"),
rlm@1: 		       argv[0], c);
rlm@1: 	  }
rlm@1: 	optopt = c;
rlm@1: 	return '?';
rlm@1:       }
rlm@1:     /* Convenience. Treat POSIX -W foo same as long option --foo */
rlm@1:     if (temp[0] == 'W' && temp[1] == ';')
rlm@1:       {
rlm@1: 	char *nameend;
rlm@1: 	const struct option *p;
rlm@1: 	const struct option *pfound = NULL;
rlm@1: 	int exact = 0;
rlm@1: 	int ambig = 0;
rlm@1: 	int indfound = 0;
rlm@1: 	int option_index;
rlm@1: 
rlm@1: 	/* This is an option that requires an argument.  */
rlm@1: 	if (*nextchar != '\0')
rlm@1: 	  {
rlm@1: 	    optarg = nextchar;
rlm@1: 	    /* If we end this ARGV-element by taking the rest as an arg,
rlm@1: 	       we must advance to the next element now.  */
rlm@1: 	    optind++;
rlm@1: 	  }
rlm@1: 	else if (optind == argc)
rlm@1: 	  {
rlm@1: 	    if (opterr)
rlm@1: 	      {
rlm@1: 		/* 1003.2 specifies the format of this message.  */
rlm@1: 		fprintf (stderr, _("%s: option requires an argument -- %c\n"),
rlm@1: 			 argv[0], c);
rlm@1: 	      }
rlm@1: 	    optopt = c;
rlm@1: 	    if (optstring[0] == ':')
rlm@1: 	      c = ':';
rlm@1: 	    else
rlm@1: 	      c = '?';
rlm@1: 	    return c;
rlm@1: 	  }
rlm@1: 	else
rlm@1: 	  /* We already incremented `optind' once;
rlm@1: 	     increment it again when taking next ARGV-elt as argument.  */
rlm@1: 	  optarg = argv[optind++];
rlm@1: 
rlm@1: 	/* optarg is now the argument, see if it's in the
rlm@1: 	   table of longopts.  */
rlm@1: 
rlm@1: 	for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
rlm@1: 	  /* Do nothing.  */ ;
rlm@1: 
rlm@1: 	/* Test all long options for either exact match
rlm@1: 	   or abbreviated matches.  */
rlm@1: 	for (p = longopts, option_index = 0; p->name; p++, option_index++)
rlm@1: 	  if (!strncmp (p->name, nextchar, nameend - nextchar))
rlm@1: 	    {
rlm@1: 	      if ((unsigned int) (nameend - nextchar) == strlen (p->name))
rlm@1: 		{
rlm@1: 		  /* Exact match found.  */
rlm@1: 		  pfound = p;
rlm@1: 		  indfound = option_index;
rlm@1: 		  exact = 1;
rlm@1: 		  break;
rlm@1: 		}
rlm@1: 	      else if (pfound == NULL)
rlm@1: 		{
rlm@1: 		  /* First nonexact match found.  */
rlm@1: 		  pfound = p;
rlm@1: 		  indfound = option_index;
rlm@1: 		}
rlm@1: 	      else
rlm@1: 		/* Second or later nonexact match found.  */
rlm@1: 		ambig = 1;
rlm@1: 	    }
rlm@1: 	if (ambig && !exact)
rlm@1: 	  {
rlm@1: 	    if (opterr)
rlm@1: 	      fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
rlm@1: 		       argv[0], argv[optind]);
rlm@1: 	    nextchar += strlen (nextchar);
rlm@1: 	    optind++;
rlm@1: 	    return '?';
rlm@1: 	  }
rlm@1: 	if (pfound != NULL)
rlm@1: 	  {
rlm@1: 	    option_index = indfound;
rlm@1: 	    if (*nameend)
rlm@1: 	      {
rlm@1: 		/* Don't test has_arg with >, because some C compilers don't
rlm@1: 		   allow it to be used on enums.  */
rlm@1: 		if (pfound->has_arg)
rlm@1: 		  optarg = nameend + 1;
rlm@1: 		else
rlm@1: 		  {
rlm@1: 		    if (opterr)
rlm@1: 		      fprintf (stderr, _("\
rlm@1: %s: option `-W %s' doesn't allow an argument\n"),
rlm@1: 			       argv[0], pfound->name);
rlm@1: 
rlm@1: 		    nextchar += strlen (nextchar);
rlm@1: 		    return '?';
rlm@1: 		  }
rlm@1: 	      }
rlm@1: 	    else if (pfound->has_arg == 1)
rlm@1: 	      {
rlm@1: 		if (optind < argc)
rlm@1: 		  optarg = argv[optind++];
rlm@1: 		else
rlm@1: 		  {
rlm@1: 		    if (opterr)
rlm@1: 		      fprintf (stderr,
rlm@1: 			       _("%s: option `%s' requires an argument\n"),
rlm@1: 			       argv[0], argv[optind - 1]);
rlm@1: 		    nextchar += strlen (nextchar);
rlm@1: 		    return optstring[0] == ':' ? ':' : '?';
rlm@1: 		  }
rlm@1: 	      }
rlm@1: 	    nextchar += strlen (nextchar);
rlm@1: 	    if (longind != NULL)
rlm@1: 	      *longind = option_index;
rlm@1: 	    if (pfound->flag)
rlm@1: 	      {
rlm@1: 		*(pfound->flag) = pfound->val;
rlm@1: 		return 0;
rlm@1: 	      }
rlm@1: 	    return pfound->val;
rlm@1: 	  }
rlm@1: 	  nextchar = NULL;
rlm@1: 	  return 'W';	/* Let the application handle it.   */
rlm@1:       }
rlm@1:     if (temp[1] == ':')
rlm@1:       {
rlm@1: 	if (temp[2] == ':')
rlm@1: 	  {
rlm@1: 	    /* This is an option that accepts an argument optionally.  */
rlm@1: 	    if (*nextchar != '\0')
rlm@1: 	      {
rlm@1: 		optarg = nextchar;
rlm@1: 		optind++;
rlm@1: 	      }
rlm@1: 	    else
rlm@1: 	      optarg = NULL;
rlm@1: 	    nextchar = NULL;
rlm@1: 	  }
rlm@1: 	else
rlm@1: 	  {
rlm@1: 	    /* This is an option that requires an argument.  */
rlm@1: 	    if (*nextchar != '\0')
rlm@1: 	      {
rlm@1: 		optarg = nextchar;
rlm@1: 		/* If we end this ARGV-element by taking the rest as an arg,
rlm@1: 		   we must advance to the next element now.  */
rlm@1: 		optind++;
rlm@1: 	      }
rlm@1: 	    else if (optind == argc)
rlm@1: 	      {
rlm@1: 		if (opterr)
rlm@1: 		  {
rlm@1: 		    /* 1003.2 specifies the format of this message.  */
rlm@1: 		    fprintf (stderr,
rlm@1: 			   _("%s: option requires an argument -- %c\n"),
rlm@1: 			   argv[0], c);
rlm@1: 		  }
rlm@1: 		optopt = c;
rlm@1: 		if (optstring[0] == ':')
rlm@1: 		  c = ':';
rlm@1: 		else
rlm@1: 		  c = '?';
rlm@1: 	      }
rlm@1: 	    else
rlm@1: 	      /* We already incremented `optind' once;
rlm@1: 		 increment it again when taking next ARGV-elt as argument.  */
rlm@1: 	      optarg = argv[optind++];
rlm@1: 	    nextchar = NULL;
rlm@1: 	  }
rlm@1:       }
rlm@1:     return c;
rlm@1:   }
rlm@1: }
rlm@1: 
rlm@1: int
rlm@1: getopt (argc, argv, optstring)
rlm@1:      int argc;
rlm@1:      char *const *argv;
rlm@1:      const char *optstring;
rlm@1: {
rlm@1:   return _getopt_internal (argc, argv, optstring,
rlm@1: 			   (const struct option *) 0,
rlm@1: 			   (int *) 0,
rlm@1: 			   0);
rlm@1: }
rlm@1: 
rlm@1: #endif	/* Not ELIDE_CODE.  */
rlm@1: 
rlm@1: #ifdef TEST
rlm@1: 
rlm@1: /* Compile with -DTEST to make an executable for use in testing
rlm@1:    the above definition of `getopt'.  */
rlm@1: 
rlm@1: int
rlm@1: main (argc, argv)
rlm@1:      int argc;
rlm@1:      char **argv;
rlm@1: {
rlm@1:   int c;
rlm@1:   int digit_optind = 0;
rlm@1: 
rlm@1:   while (1)
rlm@1:     {
rlm@1:       int this_option_optind = optind ? optind : 1;
rlm@1: 
rlm@1:       c = getopt (argc, argv, "abc:d:0123456789");
rlm@1:       if (c == -1)
rlm@1: 	break;
rlm@1: 
rlm@1:       switch (c)
rlm@1: 	{
rlm@1: 	case '0':
rlm@1: 	case '1':
rlm@1: 	case '2':
rlm@1: 	case '3':
rlm@1: 	case '4':
rlm@1: 	case '5':
rlm@1: 	case '6':
rlm@1: 	case '7':
rlm@1: 	case '8':
rlm@1: 	case '9':
rlm@1: 	  if (digit_optind != 0 && digit_optind != this_option_optind)
rlm@1: 	    printf ("digits occur in two different argv-elements.\n");
rlm@1: 	  digit_optind = this_option_optind;
rlm@1: 	  printf ("option %c\n", c);
rlm@1: 	  break;
rlm@1: 
rlm@1: 	case 'a':
rlm@1: 	  printf ("option a\n");
rlm@1: 	  break;
rlm@1: 
rlm@1: 	case 'b':
rlm@1: 	  printf ("option b\n");
rlm@1: 	  break;
rlm@1: 
rlm@1: 	case 'c':
rlm@1: 	  printf ("option c with value `%s'\n", optarg);
rlm@1: 	  break;
rlm@1: 
rlm@1: 	case '?':
rlm@1: 	  break;
rlm@1: 
rlm@1: 	default:
rlm@1: 	  printf ("?? getopt returned character code 0%o ??\n", c);
rlm@1: 	}
rlm@1:     }
rlm@1: 
rlm@1:   if (optind < argc)
rlm@1:     {
rlm@1:       printf ("non-option ARGV-elements: ");
rlm@1:       while (optind < argc)
rlm@1: 	printf ("%s ", argv[optind++]);
rlm@1:       printf ("\n");
rlm@1:     }
rlm@1: 
rlm@1:   exit (0);
rlm@1: }
rlm@1: 
rlm@1: #endif /* TEST */