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    1 /* Getopt for GNU.
    2    NOTE: getopt is now part of the C library, so if you don't know what
    3    "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
    4    before changing it!
    5 
    6    Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94
    7     Free Software Foundation, Inc.
    8 
    9 Changes by monty:
   10 - Added include of string.h when necessary.
   11 - Removed two warnings from gcc.
   12 
   13 This file is part of the GNU C Library.  Its master source is NOT part of
   14 the C library, however.  The master source lives in /gd/gnu/lib.
   15 
   16 The GNU C Library is free software; you can redistribute it and/or
   17 modify it under the terms of the GNU Library General Public License as
   18 published by the Free Software Foundation; either version 2 of the
   19 License, or (at your option) any later version.
   20 
   21 The GNU C Library is distributed in the hope that it will be useful,
   22 but WITHOUT ANY WARRANTY; without even the implied warranty of
   23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   24 Library General Public License for more details.
   25 
   26 You should have received a copy of the GNU Library General Public
   27 License along with the GNU C Library; see the file COPYING.LIB.  If
   28 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
   29 Cambridge, MA 02139, USA.  */
   30 
   31 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
   32    Ditto for AIX 3.2 and <stdlib.h>.  */
   33 #ifndef _NO_PROTO
   34 #define _NO_PROTO
   35 #endif
   36 
   37 #ifdef HAVE_CONFIG_H
   38 #include <config.h>
   39 #endif
   40 
   41 #if (!defined (__STDC__) || !__STDC__) && !defined(MSDOS) && !defined(OS2)
   42 /* This is a separate conditional since some stdc systems
   43    reject `defined (const)'.  */
   44 #ifndef const
   45 #define const
   46 #endif
   47 #endif
   48 #include <stdlib.h>
   49 #include <stdio.h>
   50 #include <string.h>
   51 /* Comment out all this code if we are using the GNU C Library, and are not
   52    actually compiling the library itself.  This code is part of the GNU C
   53    Library, but also included in many other GNU distributions.  Compiling
   54    and linking in this code is a waste when using the GNU C library
   55    (especially if it is a shared library).  Rather than having every GNU
   56    program understand `configure --with-gnu-libc' and omit the object files,
   57    it is simpler to just do this in the source for each such file.  */
   58 
   59 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
   60 
   61 
   62 /* This needs to come after some library #include
   63    to get __GNU_LIBRARY__ defined.  */
   64 #ifdef  __GNU_LIBRARY__
   65 /* Don't include stdlib.h for non-GNU C libraries because some of them
   66    contain conflicting prototypes for getopt.  */
   67 #include <stdlib.h>
   68 #endif  /* GNU C library.  */
   69 
   70 /* This version of `getopt' appears to the caller like standard Unix `getopt'
   71    but it behaves differently for the user, since it allows the user
   72    to intersperse the options with the other arguments.
   73 
   74    As `getopt' works, it permutes the elements of ARGV so that,
   75    when it is done, all the options precede everything else.  Thus
   76    all application programs are extended to handle flexible argument order.
   77 
   78    Setting the environment variable POSIXLY_CORRECT disables permutation.
   79    Then the behavior is completely standard.
   80 
   81    GNU application programs can use a third alternative mode in which
   82    they can distinguish the relative order of options and other arguments.  */
   83 
   84 #include "ma_getopt.h"
   85 
   86 /* For communication from `getopt' to the caller.
   87    When `getopt' finds an option that takes an argument,
   88    the argument value is returned here.
   89    Also, when `ordering' is RETURN_IN_ORDER,
   90    each non-option ARGV-element is returned here.  */
   91 
   92 char *optarg = NULL;
   93 
   94 /* Index in ARGV of the next element to be scanned.
   95    This is used for communication to and from the caller
   96    and for communication between successive calls to `getopt'.
   97 
   98    On entry to `getopt', zero means this is the first call; initialize.
   99 
  100    When `getopt' returns EOF, this is the index of the first of the
  101    non-option elements that the caller should itself scan.
  102 
  103    Otherwise, `optind' communicates from one call to the next
  104    how much of ARGV has been scanned so far.  */
  105 
  106 /* XXX 1003.2 says this must be 1 before any call.  */
  107 int optind = 1;
  108 
  109 /* The next char to be scanned in the option-element
  110    in which the last option character we returned was found.
  111    This allows us to pick up the scan where we left off.
  112 
  113    If this is zero, or a null string, it means resume the scan
  114    by advancing to the next ARGV-element.  */
  115 
  116 static char *nextchar;
  117 
  118 /* Callers store zero here to inhibit the error message
  119    for unrecognized options.  */
  120 
  121 int opterr = 1;
  122 
  123 /* Set to an option character which was unrecognized.
  124    This must be initialized on some systems to avoid linking in the
  125    system's own getopt implementation.  */
  126 
  127 int optopt = '?';
  128 
  129 /* Describe how to deal with options that follow non-option ARGV-elements.
  130 
  131    If the caller did not specify anything,
  132    the default is REQUIRE_ORDER if the environment variable
  133    POSIXLY_CORRECT is defined, PERMUTE otherwise.
  134 
  135    REQUIRE_ORDER means don't recognize them as options;
  136    stop option processing when the first non-option is seen.
  137    This is what Unix does.
  138    This mode of operation is selected by either setting the environment
  139    variable POSIXLY_CORRECT, or using `+' as the first character
  140    of the list of option characters.
  141 
  142    PERMUTE is the default.  We permute the contents of ARGV as we scan,
  143    so that eventually all the non-options are at the end.  This allows options
  144    to be given in any order, even with programs that were not written to
  145    expect this.
  146 
  147    RETURN_IN_ORDER is an option available to programs that were written
  148    to expect options and other ARGV-elements in any order and that care about
  149    the ordering of the two.  We describe each non-option ARGV-element
  150    as if it were the argument of an option with character code 1.
  151    Using `-' as the first character of the list of option characters
  152    selects this mode of operation.
  153 
  154    The special argument `--' forces an end of option-scanning regardless
  155    of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
  156    `--' can cause `getopt' to return EOF with `optind' != ARGC.  */
  157 
  158 static enum
  159 {
  160   REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
  161 } ordering;
  162 
  163 /* Value of POSIXLY_CORRECT environment variable.  */
  164 static char *posixly_correct;
  165 
  166 #ifdef  __GNU_LIBRARY__
  167 /* We want to avoid inclusion of string.h with non-GNU libraries
  168    because there are many ways it can cause trouble.
  169    On some systems, it contains special magic macros that don't work
  170    in GCC.  */
  171 #include <string.h>
  172 #define my_index    strchr
  173 #else
  174 
  175 /* Avoid depending on library functions or files
  176    whose names are inconsistent.  */
  177 
  178 static char *
  179 my_index (const char *str, int chr)
  180 {
  181   while (*str)
  182     {
  183       if (*str == chr)
  184     return (char *) str;
  185       str++;
  186     }
  187   return 0;
  188 }
  189 
  190 /* If using GCC, we can safely declare strlen this way.
  191    If not using GCC, it is ok not to declare it.  */
  192 #ifdef __GNUC__
  193 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
  194    That was relevant to code that was here before.  */
  195 #if !defined (__STDC__) || !__STDC__
  196 /* gcc with -traditional declares the built-in strlen to return int,
  197    and has done so at least since version 2.4.5. -- rms.  */
  198 extern int strlen (const char *);
  199 #endif /* not __STDC__ */
  200 #endif /* __GNUC__ */
  201 
  202 #endif /* not __GNU_LIBRARY__ */
  203 
  204 /* Handle permutation of arguments.  */
  205 
  206 /* Describe the part of ARGV that contains non-options that have
  207    been skipped.  `first_nonopt' is the index in ARGV of the first of them;
  208    `last_nonopt' is the index after the last of them.  */
  209 
  210 static int first_nonopt;
  211 static int last_nonopt;
  212 
  213 /* Exchange two adjacent subsequences of ARGV.
  214    One subsequence is elements [first_nonopt,last_nonopt)
  215    which contains all the non-options that have been skipped so far.
  216    The other is elements [last_nonopt,optind), which contains all
  217    the options processed since those non-options were skipped.
  218 
  219    `first_nonopt' and `last_nonopt' are relocated so that they describe
  220    the new indices of the non-options in ARGV after they are moved.  */
  221 
  222 static void
  223 exchange (char **argv)
  224 {
  225   int bottom = first_nonopt;
  226   int middle = last_nonopt;
  227   int top = optind;
  228   char *tem;
  229 
  230   /* Exchange the shorter segment with the far end of the longer segment.
  231      That puts the shorter segment into the right place.
  232      It leaves the longer segment in the right place overall,
  233      but it consists of two parts that need to be swapped next.  */
  234 
  235   while (top > middle && middle > bottom)
  236     {
  237       if (top - middle > middle - bottom)
  238     {
  239       /* Bottom segment is the short one.  */
  240       int len = middle - bottom;
  241       register int i;
  242 
  243       /* Swap it with the top part of the top segment.  */
  244       for (i = 0; i < len; i++)
  245         {
  246           tem = argv[bottom + i];
  247           argv[bottom + i] = argv[top - (middle - bottom) + i];
  248           argv[top - (middle - bottom) + i] = tem;
  249         }
  250       /* Exclude the moved bottom segment from further swapping.  */
  251       top -= len;
  252     }
  253       else
  254     {
  255       /* Top segment is the short one.  */
  256       int len = top - middle;
  257       register int i;
  258 
  259       /* Swap it with the bottom part of the bottom segment.  */
  260       for (i = 0; i < len; i++)
  261         {
  262           tem = argv[bottom + i];
  263           argv[bottom + i] = argv[middle + i];
  264           argv[middle + i] = tem;
  265         }
  266       /* Exclude the moved top segment from further swapping.  */
  267       bottom += len;
  268     }
  269     }
  270 
  271   /* Update records for the slots the non-options now occupy.  */
  272 
  273   first_nonopt += (optind - last_nonopt);
  274   last_nonopt = optind;
  275 }
  276 
  277 /* Initialize the internal data when the first call is made.  */
  278 
  279 static const char *
  280 _getopt_initialize (const char *optstring)
  281 {
  282   /* Start processing options with ARGV-element 1 (since ARGV-element 0
  283      is the program name); the sequence of previously skipped
  284      non-option ARGV-elements is empty.  */
  285 
  286   first_nonopt = last_nonopt = optind = 1;
  287 
  288   nextchar = NULL;
  289 
  290   posixly_correct = getenv ("POSIXLY_CORRECT");
  291 
  292   /* Determine how to handle the ordering of options and nonoptions.  */
  293 
  294   if (optstring[0] == '-')
  295     {
  296       ordering = RETURN_IN_ORDER;
  297       ++optstring;
  298     }
  299   else if (optstring[0] == '+')
  300     {
  301       ordering = REQUIRE_ORDER;
  302       ++optstring;
  303     }
  304   else if (posixly_correct != NULL)
  305     ordering = REQUIRE_ORDER;
  306   else
  307     ordering = PERMUTE;
  308 
  309   return optstring;
  310 }
  311 
  312 /* Scan elements of ARGV (whose length is ARGC) for option characters
  313    given in OPTSTRING.
  314 
  315    If an element of ARGV starts with '-', and is not exactly "-" or "--",
  316    then it is an option element.  The characters of this element
  317    (aside from the initial '-') are option characters.  If `getopt'
  318    is called repeatedly, it returns successively each of the option characters
  319    from each of the option elements.
  320 
  321    If `getopt' finds another option character, it returns that character,
  322    updating `optind' and `nextchar' so that the next call to `getopt' can
  323    resume the scan with the following option character or ARGV-element.
  324 
  325    If there are no more option characters, `getopt' returns `EOF'.
  326    Then `optind' is the index in ARGV of the first ARGV-element
  327    that is not an option.  (The ARGV-elements have been permuted
  328    so that those that are not options now come last.)
  329 
  330    OPTSTRING is a string containing the legitimate option characters.
  331    If an option character is seen that is not listed in OPTSTRING,
  332    return '?' after printing an error message.  If you set `opterr' to
  333    zero, the error message is suppressed but we still return '?'.
  334 
  335    If a char in OPTSTRING is followed by a colon, that means it wants an arg,
  336    so the following text in the same ARGV-element, or the text of the following
  337    ARGV-element, is returned in `optarg'.  Two colons mean an option that
  338    wants an optional arg; if there is text in the current ARGV-element,
  339    it is returned in `optarg', otherwise `optarg' is set to zero.
  340 
  341    If OPTSTRING starts with `-' or `+', it requests different methods of
  342    handling the non-option ARGV-elements.
  343    See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
  344 
  345    Long-named options begin with `--' instead of `-'.
  346    Their names may be abbreviated as long as the abbreviation is unique
  347    or is an exact match for some defined option.  If they have an
  348    argument, it follows the option name in the same ARGV-element, separated
  349    from the option name by a `=', or else the in next ARGV-element.
  350    When `getopt' finds a long-named option, it returns 0 if that option's
  351    `flag' field is nonzero, the value of the option's `val' field
  352    if the `flag' field is zero.
  353 
  354    The elements of ARGV aren't really const, because we permute them.
  355    But we pretend they're const in the prototype to be compatible
  356    with other systems.
  357 
  358    LONGOPTS is a vector of `struct option' terminated by an
  359    element containing a name which is zero.
  360 
  361    LONGIND returns the index in LONGOPT of the long-named option found.
  362    It is only valid when a long-named option has been found by the most
  363    recent call.
  364 
  365    If LONG_ONLY is nonzero, '-' as well as '--' can introduce
  366    long-named options.  */
  367 
  368 int
  369 _getopt_internal (int argc, char *const *argv, const char *optstring, const struct option *longopts, int *longind, int long_only)
  370 {
  371   optarg = NULL;
  372 
  373   if (optind == 0)
  374     optstring = _getopt_initialize (optstring);
  375 
  376   if (nextchar == NULL || *nextchar == '\0')
  377     {
  378       /* Advance to the next ARGV-element.  */
  379 
  380       if (ordering == PERMUTE)
  381     {
  382       /* If we have just processed some options following some non-options,
  383          exchange them so that the options come first.  */
  384 
  385       if (first_nonopt != last_nonopt && last_nonopt != optind)
  386         exchange ((char **) argv);
  387       else if (last_nonopt != optind)
  388         first_nonopt = optind;
  389 
  390       /* Skip any additional non-options
  391          and extend the range of non-options previously skipped.  */
  392 
  393       while (optind < argc
  394          && (argv[optind][0] != '-' || argv[optind][1] == '\0'))
  395         optind++;
  396       last_nonopt = optind;
  397     }
  398 
  399       /* The special ARGV-element `--' means premature end of options.
  400      Skip it like a null option,
  401      then exchange with previous non-options as if it were an option,
  402      then skip everything else like a non-option.  */
  403 
  404       if (optind != argc && !strcmp (argv[optind], "--"))
  405     {
  406       optind++;
  407 
  408       if (first_nonopt != last_nonopt && last_nonopt != optind)
  409         exchange ((char **) argv);
  410       else if (first_nonopt == last_nonopt)
  411         first_nonopt = optind;
  412       last_nonopt = argc;
  413 
  414       optind = argc;
  415     }
  416 
  417       /* If we have done all the ARGV-elements, stop the scan
  418      and back over any non-options that we skipped and permuted.  */
  419 
  420       if (optind == argc)
  421     {
  422       /* Set the next-arg-index to point at the non-options
  423          that we previously skipped, so the caller will digest them.  */
  424       if (first_nonopt != last_nonopt)
  425         optind = first_nonopt;
  426       return EOF;
  427     }
  428 
  429       /* If we have come to a non-option and did not permute it,
  430      either stop the scan or describe it to the caller and pass it by.  */
  431 
  432       if ((argv[optind][0] != '-' || argv[optind][1] == '\0'))
  433     {
  434       if (ordering == REQUIRE_ORDER)
  435         return EOF;
  436       optarg = argv[optind++];
  437       return 1;
  438     }
  439 
  440       /* We have found another option-ARGV-element.
  441      Skip the initial punctuation.  */
  442 
  443       nextchar = (argv[optind] + 1
  444           + (longopts != NULL && argv[optind][1] == '-'));
  445     }
  446 
  447   /* Decode the current option-ARGV-element.  */
  448 
  449   /* Check whether the ARGV-element is a long option.
  450 
  451      If long_only and the ARGV-element has the form "-f", where f is
  452      a valid short option, don't consider it an abbreviated form of
  453      a long option that starts with f.  Otherwise there would be no
  454      way to give the -f short option.
  455 
  456      On the other hand, if there's a long option "fubar" and
  457      the ARGV-element is "-fu", do consider that an abbreviation of
  458      the long option, just like "--fu", and not "-f" with arg "u".
  459 
  460      This distinction seems to be the most useful approach.  */
  461 
  462   if (longopts != NULL
  463       && (argv[optind][1] == '-'
  464       || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
  465     {
  466       char *nameend;
  467       const struct option *p;
  468       const struct option *pfound = NULL;
  469       int exact = 0;
  470       int ambig = 0;
  471       int indfound=0;               /* Keep gcc happy */
  472       int option_index;
  473 
  474       for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
  475     /* Do nothing.  */ ;
  476 
  477       /* Test all long options for either exact match
  478      or abbreviated matches.  */
  479       for (p = longopts, option_index = 0; p->name; p++, option_index++)
  480     if (!strncmp (p->name, nextchar, nameend - nextchar))
  481       {
  482         if ((size_t) (nameend - nextchar) == (size_t) strlen (p->name))
  483           {
  484         /* Exact match found.  */
  485         pfound = p;
  486         indfound = option_index;
  487         exact = 1;
  488         break;
  489           }
  490         else if (pfound == NULL)
  491           {
  492         /* First nonexact match found.  */
  493         pfound = p;
  494         indfound = option_index;
  495           }
  496         else
  497           /* Second or later nonexact match found.  */
  498           ambig = 1;
  499       }
  500 
  501       if (ambig && !exact)
  502     {
  503       if (opterr)
  504         fprintf (stderr, "%s: option `%s' is ambiguous\n",
  505              argv[0], argv[optind]);
  506       nextchar += strlen (nextchar);
  507       optind++;
  508       return '?';
  509     }
  510 
  511       if (pfound != NULL)
  512     {
  513       option_index = indfound;
  514       optind++;
  515       if (*nameend)
  516         {
  517           /* Don't test has_arg with >, because some C compilers don't
  518          allow it to be used on enums.  */
  519           if (pfound->has_arg)
  520         optarg = nameend + 1;
  521           else
  522         {
  523           if (opterr)
  524             {
  525               if (argv[optind - 1][1] == '-')
  526             /* --option */
  527             fprintf (stderr,
  528                  "%s: option `--%s' doesn't allow an argument\n",
  529                  argv[0], pfound->name);
  530               else
  531             /* +option or -option */
  532             fprintf (stderr,
  533                  "%s: option `%c%s' doesn't allow an argument\n",
  534                  argv[0], argv[optind - 1][0], pfound->name);
  535             }
  536           nextchar += strlen (nextchar);
  537           return '?';
  538         }
  539         }
  540       else if (pfound->has_arg == 1)
  541         {
  542           if (optind < argc)
  543         optarg = argv[optind++];
  544           else
  545         {
  546           if (opterr)
  547             fprintf (stderr, "%s: option `%s' requires an argument\n",
  548                  argv[0], argv[optind - 1]);
  549           nextchar += strlen (nextchar);
  550           return optstring[0] == ':' ? ':' : '?';
  551         }
  552         }
  553       nextchar += strlen (nextchar);
  554       if (longind != NULL)
  555         *longind = option_index;
  556       if (pfound->flag)
  557         {
  558           *(pfound->flag) = pfound->val;
  559           return 0;
  560         }
  561       return pfound->val;
  562     }
  563 
  564       /* Can't find it as a long option.  If this is not getopt_long_only,
  565      or the option starts with '--' or is not a valid short
  566      option, then it's an error.
  567      Otherwise interpret it as a short option.  */
  568       if (!long_only || argv[optind][1] == '-'
  569       || my_index (optstring, *nextchar) == NULL)
  570     {
  571       if (opterr)
  572         {
  573           if (argv[optind][1] == '-')
  574         /* --option */
  575         fprintf (stderr, "%s: unrecognized option `--%s'\n",
  576              argv[0], nextchar);
  577           else
  578         /* +option or -option */
  579         fprintf (stderr, "%s: unrecognized option `%c%s'\n",
  580              argv[0], argv[optind][0], nextchar);
  581         }
  582       nextchar = (char *) "";
  583       optind++;
  584       return '?';
  585     }
  586     }
  587 
  588   /* Look at and handle the next short option-character.  */
  589 
  590   {
  591     char c = *nextchar++;
  592     char *temp = my_index (optstring, c);
  593 
  594     /* Increment `optind' when we start to process its last character.  */
  595     if (*nextchar == '\0')
  596       ++optind;
  597 
  598     if (temp == NULL || c == ':')
  599       {
  600     if (opterr)
  601       {
  602         if (posixly_correct)
  603           /* 1003.2 specifies the format of this message.  */
  604           fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
  605         else
  606           fprintf (stderr, "%s: invalid option -- %c\n", argv[0], c);
  607       }
  608     optopt = c;
  609     return '?';
  610       }
  611     if (temp[1] == ':')
  612       {
  613     if (temp[2] == ':')
  614       {
  615         /* This is an option that accepts an argument optionally.  */
  616         if (*nextchar != '\0')
  617           {
  618         optarg = nextchar;
  619         optind++;
  620           }
  621         else
  622           optarg = NULL;
  623         nextchar = NULL;
  624       }
  625     else
  626       {
  627         /* This is an option that requires an argument.  */
  628         if (*nextchar != '\0')
  629           {
  630         optarg = nextchar;
  631         /* If we end this ARGV-element by taking the rest as an arg,
  632            we must advance to the next element now.  */
  633         optind++;
  634           }
  635         else if (optind == argc)
  636           {
  637         if (opterr)
  638           {
  639             /* 1003.2 specifies the format of this message.  */
  640             fprintf (stderr, "%s: option requires an argument -- %c\n",
  641                  argv[0], c);
  642           }
  643         optopt = c;
  644         if (optstring[0] == ':')
  645           c = ':';
  646         else
  647           c = '?';
  648           }
  649         else
  650           /* We already incremented `optind' once;
  651          increment it again when taking next ARGV-elt as argument.  */
  652           optarg = argv[optind++];
  653         nextchar = NULL;
  654       }
  655       }
  656     return c;
  657   }
  658 }
  659 
  660 int
  661 getopt (int argc, char *const *argv, const char *optstring)
  662 {
  663   return _getopt_internal (argc, argv, optstring,
  664                (const struct option *) 0,
  665                (int *) 0,
  666                0);
  667 }
  668 
  669 #endif  /* _LIBC or not __GNU_LIBRARY__.  */
  670 
  671 #ifdef TEST
  672 
  673 /* Compile with -DTEST to make an executable for use in testing
  674    the above definition of `getopt'.  */
  675 
  676 int
  677 main (argc, argv)
  678      int argc;
  679      char **argv;
  680 {
  681   int c;
  682   int digit_optind = 0;
  683 
  684   while (1)
  685     {
  686       int this_option_optind = optind ? optind : 1;
  687 
  688       c = getopt (argc, argv, "abc:d:0123456789");
  689       if (c == EOF)
  690     break;
  691 
  692       switch (c)
  693     {
  694     case '0':
  695     case '1':
  696     case '2':
  697     case '3':
  698     case '4':
  699     case '5':
  700     case '6':
  701     case '7':
  702     case '8':
  703     case '9':
  704       if (digit_optind != 0 && digit_optind != this_option_optind)
  705         printf ("digits occur in two different argv-elements.\n");
  706       digit_optind = this_option_optind;
  707       printf ("option %c\n", c);
  708       break;
  709 
  710     case 'a':
  711       printf ("option a\n");
  712       break;
  713 
  714     case 'b':
  715       printf ("option b\n");
  716       break;
  717 
  718     case 'c':
  719       printf ("option c with value `%s'\n", optarg);
  720       break;
  721 
  722     case '?':
  723       break;
  724 
  725     default:
  726       printf ("?? getopt returned character code 0%o ??\n", c);
  727     }
  728     }
  729 
  730   if (optind < argc)
  731     {
  732       printf ("non-option ARGV-elements: ");
  733       while (optind < argc)
  734     printf ("%s ", argv[optind++]);
  735       printf ("\n");
  736     }
  737 
  738   exit (0);
  739 }
  740 
  741 #endif /* TEST */