getopt for windows

　　Glibc库里有个getopt用于解析命令行参数，挺方便的，下面的是别人从Glibc源码的获取的几个getopt相关的文件，已经将平台相关的修改掉，windows下可以调用，本来是要用没用到就没去看正确性，具体以最新的Glibc源码为准。

　　

 /*
 getopt.c

 Copyright (C) 2012, coreBugZJ, all rights reserved.

 在 Windows 平台下使用 Linux 的 getopt, getopt_long, getopt_long_only 函数。

 修改自 glibc 2.8 中 getopt.c 文件，
 */

 /* 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) 1987-1996,1998-2004,2008 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, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */

 #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.  */

 #include <string.h>

 #define _(msgid) (msgid)

 #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 = ;

 /* Callers store zero here to inhibit the error message
    for unrecognized options.  */

 int opterr = ;

 /* 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 getenv
 extern char *getenv ();
 #endif

 # define SWAP_FLAGS(ch1, ch2)

 /* 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.  */

   while (top > middle && middle > bottom)
     {
       if (top - middle > middle - bottom)
     {
       /* Bottom segment is the short one.  */
       int len = middle - bottom;
       register int i;

       /* Swap it with the top part of the top segment.  */
       for (i = ; 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;
       register int i;

       /* Swap it with the bottom part of the bottom segment.  */
       for (i = ; 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)
 {
   /* 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 = !!getenv ("POSIXLY_CORRECT");

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

   if (optstring[] == '-')
     {
       d->__ordering = RETURN_IN_ORDER;
       ++optstring;
     }
   else if (optstring[] == '+')
     {
       d->__ordering = REQUIRE_ORDER;
       ++optstring;
     }
   else if (d->__posixly_correct)
     d->__ordering = REQUIRE_ORDER;
   else
     d->__ordering = PERMUTE;

   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 print_errors = d->opterr;
   if (optstring[] == ':')
     print_errors = ;

   if (argc < )
     return -;

   d->optarg = NULL;

   if (d->optind ==  || !d->__initialized)
     {
       if (d->optind == )
     d->optind = ;    /* Don't scan ARGV[0], the program name.  */
       optstring = _getopt_initialize (argc, argv, optstring, d);
       d->__initialized = ;
     }

   /* 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.  */
 # define NONOPTION_P (argv[d->optind][] != '-' || argv[d->optind][] == '\0')

   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 -;
     }

       /* 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 -;
       d->optarg = argv[d->optind++];
       return ;
     }

       /* We have found another option-ARGV-element.
      Skip the initial punctuation.  */

       d->__nextchar = (argv[d->optind] +
           + (longopts != NULL && argv[d->optind][] == '-'));
     }

   /* 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][] == '-'
       || (long_only && (argv[d->optind][]
                 || !strchr (optstring, argv[d->optind][])))))
     {
       char *nameend;
       const struct option *p;
       const struct option *pfound = NULL;
       int exact = ;
       int ambig = ;
       int indfound = -;
       int option_index;

       for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
     /* Do nothing.  */ ;

       /* Test all long options for either exact match
      or abbreviated matches.  */
       for (p = longopts, option_index = ; p->name; p++, option_index++)
     if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
       {
         if ((unsigned int) (nameend - d->__nextchar)
         == (unsigned int) strlen (p->name))
           {
         /* Exact match found.  */
         pfound = p;
         indfound = option_index;
         exact = ;
         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 = ;
       }

       if (ambig && !exact)
     {
       if (print_errors)
         {
           fprintf (stderr, _("%s: option '%s' is ambiguous\n"),
                argv[], argv[d->optind]);
         }
       d->__nextchar += strlen (d->__nextchar);
       d->optind++;
       d->optopt = ;
       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 + ;
           else
         {
           if (print_errors)
             {

               if (argv[d->optind - ][] == '-')
             {
               /* --option */
               fprintf (stderr, _("\
 %s: option '--%s' doesn't allow an argument\n"),
                    argv[], pfound->name);
             }
               else
             {
               /* +option or -option */
               fprintf (stderr, _("\
 %s: option '%c%s' doesn't allow an argument\n"),
                    argv[], argv[d->optind - ][],
                    pfound->name);
             }

             }

           d->__nextchar += strlen (d->__nextchar);

           d->optopt = pfound->val;
           return '?';
         }
         }
       else if (pfound->has_arg == )
         {
           if (d->optind < argc)
         d->optarg = argv[d->optind++];
           else
         {
           if (print_errors)
             {
               fprintf (stderr,
                    _("%s: option '%s' requires an argument\n"),
                    argv[], argv[d->optind - ]);
             }
           d->__nextchar += strlen (d->__nextchar);
           d->optopt = pfound->val;
           return optstring[] == ':' ? ':' : '?';
         }
         }
       d->__nextchar += strlen (d->__nextchar);
       if (longind != NULL)
         *longind = option_index;
       if (pfound->flag)
         {
           *(pfound->flag) = pfound->val;
           return ;
         }
       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][] == '-'
       || strchr (optstring, *d->__nextchar) == NULL)
     {
       if (print_errors)
         {

           if (argv[d->optind][] == '-')
         {
           /* --option */
           fprintf (stderr, _("%s: unrecognized option '--%s'\n"),
                argv[], d->__nextchar);
         }
           else
         {
           /* +option or -option */
           fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),
                argv[], argv[d->optind][], d->__nextchar);
         }

         }
       d->__nextchar = (char *) "";
       d->optind++;
       d->optopt = ;
       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 == ':')
       {
     if (print_errors)
       {

         fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[], c);

       }
     d->optopt = c;
     return '?';
       }
     /* Convenience. Treat POSIX -W foo same as long option --foo */
     if (temp[] == 'W' && temp[] == ';')
       {
     char *nameend;
     const struct option *p;
     const struct option *pfound = NULL;
     int exact = ;
     int ambig = ;
     int indfound = ;
     int option_index;

     /* 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)
           {
         fprintf (stderr,
              _("%s: option requires an argument -- '%c'\n"),
              argv[], c);
           }
         d->optopt = c;
         if (optstring[] == ':')
           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 = ; 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 = ;
           break;
         }
           else if (pfound == NULL)
         {
           /* First nonexact match found.  */
           pfound = p;
           indfound = option_index;
         }
           else
         /* Second or later nonexact match found.  */
         ambig = ;
         }
     if (ambig && !exact)
       {
         if (print_errors)
           {
         fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"),
              argv[], argv[d->optind]);
           }
         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 + ;
         else
           {
             if (print_errors)
               {
             fprintf (stderr, _("\
 %s: option '-W %s' doesn't allow an argument\n"),
                  argv[], pfound->name);
               }

             d->__nextchar += strlen (d->__nextchar);
             return '?';
           }
           }
         else if (pfound->has_arg == )
           {
         if (d->optind < argc)
           d->optarg = argv[d->optind++];
         else
           {
             if (print_errors)
               {
             fprintf (stderr,
                  _("%s: option '%s' requires an argument\n"),
                  argv[], argv[d->optind - ]);
               }
             d->__nextchar += strlen (d->__nextchar);
             return optstring[] == ':' ? ':' : '?';
           }
           }
         d->__nextchar += strlen (d->__nextchar);
         if (longind != NULL)
           *longind = option_index;
         if (pfound->flag)
           {
         *(pfound->flag) = pfound->val;
         return ;
           }
         return pfound->val;
       }
       d->__nextchar = NULL;
       return 'W';    /* Let the application handle it.   */
       }
     if (temp[] == ':')
       {
     if (temp[] == ':')
       {
         /* 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)
           {
             fprintf (stderr,
                  _("%s: option requires an argument -- '%c'\n"),
                  argv[], c);
           }
         d->optopt = c;
         if (optstring[] == ':')
           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 result;

   getopt_data.optind = optind;
   getopt_data.opterr = opterr;

   result = _getopt_internal_r (argc, argv, optstring, longopts,
                    longind, long_only, &getopt_data);

   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 *) ,
                (int *) ,
                );
 }

 /*
 getopt.h

 Copyright (C) 2012, coreBugZJ, all rights reserved.

 在 Windows 平台下使用 Linux 的 getopt, getopt_long, getopt_long_only 函数。

 修改自 glibc 2.8 中 getopt.h 文件，
 */

 /* Declarations for getopt.
    Copyright (C) 1989-1994,1996-1999,2001,2003,2004
    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, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */

 #ifndef _GETOPT_H
 #define _GETOPT_H 1

 /* If __GNU_LIBRARY__ is not already defined, either we are being used
    standalone, or this is the first header included in the source file.
    If we are being used with glibc, we need to include <features.h>, but
    that does not exist if we are standalone.  So: if __GNU_LIBRARY__ is
    not defined, include <ctype.h>, which will pull in <features.h> for us
    if it's from glibc.  (Why ctype.h?  It's guaranteed to exist and it
    doesn't flood the namespace with stuff the way some other headers do.)  */
 #include <ctype.h>

 #ifdef    __cplusplus
 extern "C" {
 #endif

 /* 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.  */

 extern 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.  */

 extern int optind;

 /* Callers store zero here to inhibit the error message `getopt' prints
    for unrecognized options.  */

 extern int opterr;

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

 extern int optopt;

 /* Describe the long-named options requested by the application.
    The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
    of `struct option' terminated by an element containing a name which is
    zero.

    The field `has_arg' is:
    no_argument        (or 0) if the option does not take an argument,
    required_argument    (or 1) if the option requires an argument,
    optional_argument     (or 2) if the option takes an optional argument.

    If the field `flag' is not NULL, it points to a variable that is set
    to the value given in the field `val' when the option is found, but
    left unchanged if the option is not found.

    To have a long-named option do something other than set an `int' to
    a compiled-in constant, such as set a value from `optarg', set the
    option's `flag' field to zero and its `val' field to a nonzero
    value (the equivalent single-letter option character, if there is
    one).  For long options that have a zero `flag' field, `getopt'
    returns the contents of the `val' field.  */

 struct option
 {
   const char *name;
   /* has_arg can't be an enum because some compilers complain about
      type mismatches in all the code that assumes it is an int.  */
   int has_arg;
   int *flag;
   int val;
 };

 /* Names for the values of the `has_arg' field of `struct option'.  */

 #define no_argument        0
 #define required_argument    1
 #define optional_argument    2

 /* Get definitions and prototypes for functions to process the
    arguments in ARGV (ARGC of them, minus the program name) for
    options given in OPTS.

    Return the option character from OPTS just read.  Return -1 when
    there are no more options.  For unrecognized options, or options
    missing arguments, `optopt' is set to the option letter, and '?' is
    returned.

    The OPTS string is a list of characters which are recognized option
    letters, optionally followed by colons, specifying that that letter
    takes an argument, to be placed in `optarg'.

    If a letter in OPTS is followed by two colons, its argument is
    optional.  This behavior is specific to the GNU `getopt'.

    The argument `--' causes premature termination of argument
    scanning, explicitly telling `getopt' that there are no more
    options.

    If OPTS begins with `--', then non-option arguments are treated as
    arguments to the option '\0'.  This behavior is specific to the GNU
    `getopt'.  */

 /* Many other libraries have conflicting prototypes for getopt, with
    differences in the consts, in stdlib.h.  To avoid compilation
    errors, only prototype getopt for the GNU C library.  */
 extern int getopt (int ___argc, char *const *___argv, const char *__shortopts);

 extern int getopt_long (int ___argc, char *const *___argv,
             const char *__shortopts,
                 const struct option *__longopts, int *__longind);

 extern int getopt_long_only (int ___argc, char *const *___argv,
                  const char *__shortopts,
                      const struct option *__longopts, int *__longind);

 #ifdef    __cplusplus
 }
 #endif

 #endif /* getopt.h */

 /*
 getopt_int.h

 Copyright (C) 2012, coreBugZJ, all rights reserved.

 在 Windows 平台下使用 Linux 的 getopt, getopt_long, getopt_long_only 函数。

 修改自 glibc 2.8 中 getopt_int.h 文件，
 */

 /* Internal declarations for getopt.
    Copyright (C) 1989-1994,1996-1999,2001,2003,2004
    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, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */

 #ifndef _GETOPT_INT_H
 #define _GETOPT_INT_H    1

 extern int _getopt_internal (int ___argc, char *const *___argv,
                  const char *__shortopts,
                      const struct option *__longopts, int *__longind,
                  int __long_only);

 /* Reentrant versions which can handle parsing multiple argument
    vectors at the same time.  */

 /* Data type for reentrant functions.  */
 struct _getopt_data
 {
   /* These have exactly the same meaning as the corresponding global
      variables, except that they are used for the reentrant
      versions of getopt.  */
   int optind;
   int opterr;
   int optopt;
   char *optarg;

   /* Internal members.  */

   /* True if the internal members have been initialized.  */
   int __initialized;

   /* The next char to be scanned in the option-element
      in which the last option character we returned was found.
      This allows us to pick up the scan where we left off.

      If this is zero, or a null string, it means resume the scan
      by advancing to the next ARGV-element.  */
   char *__nextchar;

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

      If the caller did not specify anything,
      the default is REQUIRE_ORDER if the environment variable
      POSIXLY_CORRECT is defined, PERMUTE otherwise.

      REQUIRE_ORDER means don't recognize them as options;
      stop option processing when the first non-option is seen.
      This is what Unix does.
      This mode of operation is selected by either setting the environment
      variable POSIXLY_CORRECT, or using `+' as the first character
      of the list of option characters.

      PERMUTE is the default.  We permute the contents of ARGV as we
      scan, so that eventually all the non-options are at the end.
      This allows options to be given in any order, even with programs
      that were not written to expect this.

      RETURN_IN_ORDER is an option available to programs that were
      written to expect options and other ARGV-elements in any order
      and that care about the ordering of the two.  We describe each
      non-option ARGV-element as if it were the argument of an option
      with character code 1.  Using `-' as the first character of the
      list of option characters selects this mode of operation.

      The special argument `--' forces an end of option-scanning regardless
      of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
      `--' can cause `getopt' to return -1 with `optind' != ARGC.  */

   enum
     {
       REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
     } __ordering;

   /* If the POSIXLY_CORRECT environment variable is set.  */
   int __posixly_correct;

   /* Handle permutation of arguments.  */

   /* Describe the part of ARGV that contains non-options that have
      been skipped.  `first_nonopt' is the index in ARGV of the first
      of them; `last_nonopt' is the index after the last of them.  */

   int __first_nonopt;
   int __last_nonopt;
 };

 /* The initializer is necessary to set OPTIND and OPTERR to their
    default values and to clear the initialization flag.  */
 #define _GETOPT_DATA_INITIALIZER    { 1, 1 }

 extern int _getopt_internal_r (int ___argc, char *const *___argv,
                    const char *__shortopts,
                    const struct option *__longopts, int *__longind,
                    int __long_only, struct _getopt_data *__data);

 extern int _getopt_long_r (int ___argc, char *const *___argv,
                const char *__shortopts,
                const struct option *__longopts, int *__longind,
                struct _getopt_data *__data);

 extern int _getopt_long_only_r (int ___argc, char *const *___argv,
                 const char *__shortopts,
                 const struct option *__longopts,
                 int *__longind,
                 struct _getopt_data *__data);

 #endif /* getopt_int.h */

 /*
 getopt1.c

 Copyright (C) 2012, coreBugZJ, all rights reserved.

 在 Windows 平台下使用 Linux 的 getopt, getopt_long, getopt_long_only 函数。

 修改自 glibc 2.8 中 getopt1.c 文件，
 */

 /* getopt_long and getopt_long_only entry points for GNU getopt.
    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004
      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, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */

 #include "getopt.h"
 #include "getopt_int.h"

 int
 getopt_long (int argc, char *const *argv, const char *options,
          const struct option *long_options, int *opt_index)
 {
   return _getopt_internal (argc, argv, options, long_options, opt_index, );
 }

 int
 _getopt_long_r (int argc, char *const *argv, const char *options,
         const struct option *long_options, int *opt_index,
         struct _getopt_data *d)
 {
   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
                  , d);
 }

 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
    If an option that starts with '-' (not '--') doesn't match a long option,
    but does match a short option, it is parsed as a short option
    instead.  */

 int
 getopt_long_only (int argc, char *const *argv, const char *options,
           const struct option *long_options, int *opt_index)
 {
   return _getopt_internal (argc, argv, options, long_options, opt_index, );
 }

 int
 _getopt_long_only_r (int argc, char *const *argv, const char *options,
              const struct option *long_options, int *opt_index,
              struct _getopt_data *d)
 {
   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
                  , d);
 }

 /*
 test_getopt.c

 Copyright (C) 2012, coreBugZJ, all rights reserved.

 在 Windows 平台下使用 Linux 的 getopt, getopt_long, getopt_long_only 函数。

 修改自 glibc 2.8 中 getopt.c 文件，
 */

 #include <stdio.h>
 #include "getopt.h"

 static void usage()
 {
     printf("\nNo Usage\n");
 }

 //具体应用根据实际情况修改
 static void conf_cmdline(int argc, char **argv)
 {
     int c;

     /*
      * getopt作为选项的判断，getopt_long可以指定长参数
      *
      */
     while ((c = getopt(argc, argv, "e:l:m:")) != EOF)
         switch (c) {
         case 'l':
             printf("c\n");
             break;
         case 'm':
             //TODO:获取参数n表示要获取的符号个数，通过system调用findstr /<Symbol/>将相应的符号行从temp文件中取出
             //将取出的数据处理只保留地址保存到Addr文件中。
             //通过while(n)来处理每一个argv的符号。

             printf("n\n");
             break;
         case 'e':
             //TODO:获取ELF文件，调用system("nm.exe -n elf > temp.txt")将符号表保存到temp文件中，

             break;
         default:
             //列出命令行使用方法
             usage();
         //退出函数
             exit();
         }
     //多线程时需要重新恢复初值
     optind = ;
 }

 void main(int argc, char **argv)
 {
     conf_cmdline(argc, argv);
 }

 /*
 int main (int argc, char **argv)
 {
         int c;
         int digit_optind = 0;

         while (1)
         {
                 int this_option_optind = optind ? optind : 1;
                 int option_index = 0;
                 static struct option long_options[] =
                 {
                         {"add", 1, 0, 0},
                         {"append", 0, 0, 0},
                         {"delete", 1, 0, 0},
                         {"verbose", 0, 0, 0},
                         {"create", 0, 0, 0},
                         {"file", 1, 0, 0},
                         {0, 0, 0, 0}
                 };

                 c = getopt_long (argc, argv, "abc:d:0123456789",
                         long_options, &option_index);
                 if (c == -1)
                         break;

                 switch (c)
                 {
                 case 0:
                         printf ("option %s", long_options[option_index].name);
                         if (optarg)
                                 printf (" with arg %s", optarg);
                         printf ("\n");
                         break;

                 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 'd':
                         printf ("option d 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");
         }

         return 0;
 }
 */