getopt_int.h File Reference

Go to the source code of this file.

Classes
struct	_getopt_data

Macros
#define	_GETOPT_DATA_INITIALIZER   { 1, 1 }

Functions
int	_getopt_internal (int ___argc, char **___argv, const char *__shortopts, const struct option *__longopts, int *__longind, int __long_only, int __posixly_correct)
int	_getopt_internal_r (int ___argc, char **___argv, const char *__shortopts, const struct option *__longopts, int *__longind, int __long_only, int __posixly_correct, struct _getopt_data *__data)
int	_getopt_long_r (int ___argc, char **___argv, const char *__shortopts, const struct option *__longopts, int *__longind, struct _getopt_data *__data)
int	_getopt_long_only_r (int ___argc, char **___argv, const char *__shortopts, const struct option *__longopts, int *__longind, struct _getopt_data *__data)

Macro Definition Documentation

_GETOPT_DATA_INITIALIZER

#define _GETOPT_DATA_INITIALIZER   { 1, 1 }

Definition at line 112 of file getopt_int.h.

Function Documentation

_getopt_internal()

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

Definition at line 1094 of file getopt.c.

{
  int result;
 
  getopt_data.optind = optind;
  getopt_data.opterr = opterr;
 
  result = _getopt_internal_r (argc, argv, optstring, longopts, longind,
                   long_only, posixly_correct, &getopt_data);
 
  optind = getopt_data.optind;
  optarg = getopt_data.optarg;
  optopt = getopt_data.optopt;
 
  return result;
}

References _getopt_internal_r(), argv, getopt_data, optarg, _getopt_data::optarg, opterr, _getopt_data::opterr, optind, _getopt_data::optind, optopt, _getopt_data::optopt, and posixly_correct.

_getopt_internal_r()

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

Definition at line 358 of file getopt.c.

{
  int print_errors = d->opterr;
  if (optstring[0] == ':')
    print_errors = 0;
 
  if (argc < 1)
    return -1;
 
  d->optarg = NULL;
 
  if (d->optind == 0 || !d->__initialized)
    {
      if (d->optind == 0)
    d->optind = 1;  /* Don't scan ARGV[0], the program name.  */
      optstring = _getopt_initialize (argc, argv, optstring,
                      posixly_correct, d);
      d->__initialized = 1;
    }
 
  /* Test whether ARGV[optind] points to a non-option argument.
     Either it does not have option syntax, or there is an environment flag
     from the shell indicating it is not an option.  The later information
     is only used when the used in the GNU libc.  */
#if defined _LIBC && defined USE_NONOPTION_FLAGS
# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
              || (d->optind < d->__nonoption_flags_len            \
              && __getopt_nonoption_flags[d->optind] == '1'))
#else
# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
#endif
 
  if (d->__nextchar == NULL || *d->__nextchar == '\0')
    {
      /* Advance to the next ARGV-element.  */
 
      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
     moved back by the user (who may also have changed the arguments).  */
      if (d->__last_nonopt > d->optind)
    d->__last_nonopt = d->optind;
      if (d->__first_nonopt > d->optind)
    d->__first_nonopt = d->optind;
 
      if (d->__ordering == PERMUTE)
    {
      /* If we have just processed some options following some non-options,
         exchange them so that the options come first.  */
 
      if (d->__first_nonopt != d->__last_nonopt
          && d->__last_nonopt != d->optind)
        exchange ((char **) argv, d);
      else if (d->__last_nonopt != d->optind)
        d->__first_nonopt = d->optind;
 
      /* Skip any additional non-options
         and extend the range of non-options previously skipped.  */
 
      while (d->optind < argc && NONOPTION_P)
        d->optind++;
      d->__last_nonopt = d->optind;
    }
 
      /* The special ARGV-element `--' means premature end of options.
     Skip it like a null option,
     then exchange with previous non-options as if it were an option,
     then skip everything else like a non-option.  */
 
      if (d->optind != argc && !strcmp (argv[d->optind], "--"))
    {
      d->optind++;
 
      if (d->__first_nonopt != d->__last_nonopt
          && d->__last_nonopt != d->optind)
        exchange ((char **) argv, d);
      else if (d->__first_nonopt == d->__last_nonopt)
        d->__first_nonopt = d->optind;
      d->__last_nonopt = argc;
 
      d->optind = argc;
    }
 
      /* If we have done all the ARGV-elements, stop the scan
     and back over any non-options that we skipped and permuted.  */
 
      if (d->optind == argc)
    {
      /* Set the next-arg-index to point at the non-options
         that we previously skipped, so the caller will digest them.  */
      if (d->__first_nonopt != d->__last_nonopt)
        d->optind = d->__first_nonopt;
      return -1;
    }
 
      /* If we have come to a non-option and did not permute it,
     either stop the scan or describe it to the caller and pass it by.  */
 
      if (NONOPTION_P)
    {
      if (d->__ordering == REQUIRE_ORDER)
        return -1;
      d->optarg = argv[d->optind++];
      return 1;
    }
 
      /* We have found another option-ARGV-element.
     Skip the initial punctuation.  */
 
      d->__nextchar = (argv[d->optind] + 1
          + (longopts != NULL && argv[d->optind][1] == '-'));
    }
 
  /* Decode the current option-ARGV-element.  */
 
  /* Check whether the ARGV-element is a long option.
 
     If long_only and the ARGV-element has the form "-f", where f is
     a valid short option, don't consider it an abbreviated form of
     a long option that starts with f.  Otherwise there would be no
     way to give the -f short option.
 
     On the other hand, if there's a long option "fubar" and
     the ARGV-element is "-fu", do consider that an abbreviation of
     the long option, just like "--fu", and not "-f" with arg "u".
 
     This distinction seems to be the most useful approach.  */
 
  if (longopts != NULL
      && (argv[d->optind][1] == '-'
      || (long_only && (argv[d->optind][2]
                || !strchr (optstring, argv[d->optind][1])))))
    {
      char *nameend;
      const struct option *p;
      const struct option *pfound = NULL;
      int exact = 0;
      int ambig = 0;
      int indfound = -1;
      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 = 0; 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 = 1;
        break;
          }
        else if (pfound == NULL)
          {
        /* First nonexact match found.  */
        pfound = p;
        indfound = option_index;
          }
        else if (long_only
             || pfound->has_arg != p->has_arg
             || pfound->flag != p->flag
             || pfound->val != p->val)
          /* Second or later nonexact match found.  */
          ambig = 1;
      }
 
      if (ambig && !exact)
    {
      if (print_errors)
        {
#if defined _LIBC && defined USE_IN_LIBIO
          char *buf;
 
          if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
                  argv[0], argv[d->optind]) >= 0)
        {
          _IO_flockfile (stderr);
 
          int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
          ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
          __fxprintf (NULL, "%s", buf);
 
          ((_IO_FILE *) stderr)->_flags2 = old_flags2;
          _IO_funlockfile (stderr);
 
          free (buf);
        }
#else
          fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
               argv[0], argv[d->optind]);
#endif
        }
      d->__nextchar += strlen (d->__nextchar);
      d->optind++;
      d->optopt = 0;
      return '?';
    }
 
      if (pfound != NULL)
    {
      option_index = indfound;
      d->optind++;
      if (*nameend)
        {
          /* Don't test has_arg with >, because some C compilers don't
         allow it to be used on enums.  */
          if (pfound->has_arg)
        d->optarg = nameend + 1;
          else
        {
          if (print_errors)
            {
#if defined _LIBC && defined USE_IN_LIBIO
              char *buf;
              int n;
#endif
 
              if (argv[d->optind - 1][1] == '-')
            {
              /* --option */
#if defined _LIBC && defined USE_IN_LIBIO
              n = __asprintf (&buf, _("\
%s: option `--%s' doesn't allow an argument\n"),
                      argv[0], pfound->name);
#else
              fprintf (stderr, _("\
%s: option `--%s' doesn't allow an argument\n"),
                   argv[0], pfound->name);
#endif
            }
              else
            {
              /* +option or -option */
#if defined _LIBC && defined USE_IN_LIBIO
              n = __asprintf (&buf, _("\
%s: option `%c%s' doesn't allow an argument\n"),
                      argv[0], argv[d->optind - 1][0],
                      pfound->name);
#else
              fprintf (stderr, _("\
%s: option `%c%s' doesn't allow an argument\n"),
                   argv[0], argv[d->optind - 1][0],
                   pfound->name);
#endif
            }
 
#if defined _LIBC && defined USE_IN_LIBIO
              if (n >= 0)
            {
              _IO_flockfile (stderr);
 
              int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
              ((_IO_FILE *) stderr)->_flags2
                |= _IO_FLAGS2_NOTCANCEL;
 
              __fxprintf (NULL, "%s", buf);
 
              ((_IO_FILE *) stderr)->_flags2 = old_flags2;
              _IO_funlockfile (stderr);
 
              free (buf);
            }
#endif
            }
 
          d->__nextchar += strlen (d->__nextchar);
 
          d->optopt = pfound->val;
          return '?';
        }
        }
      else if (pfound->has_arg == 1)
        {
          if (d->optind < argc)
        d->optarg = argv[d->optind++];
          else
        {
          if (print_errors)
            {
#if defined _LIBC && defined USE_IN_LIBIO
              char *buf;
 
              if (__asprintf (&buf, _("\
%s: option `%s' requires an argument\n"),
                      argv[0], argv[d->optind - 1]) >= 0)
            {
              _IO_flockfile (stderr);
 
              int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
              ((_IO_FILE *) stderr)->_flags2
                |= _IO_FLAGS2_NOTCANCEL;
 
              __fxprintf (NULL, "%s", buf);
 
              ((_IO_FILE *) stderr)->_flags2 = old_flags2;
              _IO_funlockfile (stderr);
 
              free (buf);
            }
#else
              fprintf (stderr,
                   _("%s: option `%s' requires an argument\n"),
                   argv[0], argv[d->optind - 1]);
#endif
            }
          d->__nextchar += strlen (d->__nextchar);
          d->optopt = pfound->val;
          return optstring[0] == ':' ? ':' : '?';
        }
        }
      d->__nextchar += strlen (d->__nextchar);
      if (longind != NULL)
        *longind = option_index;
      if (pfound->flag)
        {
          *(pfound->flag) = pfound->val;
          return 0;
        }
      return pfound->val;
    }
 
      /* Can't find it as a long option.  If this is not getopt_long_only,
     or the option starts with '--' or is not a valid short
     option, then it's an error.
     Otherwise interpret it as a short option.  */
      if (!long_only || argv[d->optind][1] == '-'
      || strchr (optstring, *d->__nextchar) == NULL)
    {
      if (print_errors)
        {
#if defined _LIBC && defined USE_IN_LIBIO
          char *buf;
          int n;
#endif
 
          if (argv[d->optind][1] == '-')
        {
          /* --option */
#if defined _LIBC && defined USE_IN_LIBIO
          n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
                  argv[0], d->__nextchar);
#else
          fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
               argv[0], d->__nextchar);
#endif
        }
          else
        {
          /* +option or -option */
#if defined _LIBC && defined USE_IN_LIBIO
          n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
                  argv[0], argv[d->optind][0], d->__nextchar);
#else
          fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
               argv[0], argv[d->optind][0], d->__nextchar);
#endif
        }
 
#if defined _LIBC && defined USE_IN_LIBIO
          if (n >= 0)
        {
          _IO_flockfile (stderr);
 
          int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
          ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
          __fxprintf (NULL, "%s", buf);
 
          ((_IO_FILE *) stderr)->_flags2 = old_flags2;
          _IO_funlockfile (stderr);
 
          free (buf);
        }
#endif
        }
      d->__nextchar = (char *) "";
      d->optind++;
      d->optopt = 0;
      return '?';
    }
    }
 
  /* Look at and handle the next short option-character.  */
 
  {
    char c = *d->__nextchar++;
    char *temp = strchr (optstring, c);
 
    /* Increment `optind' when we start to process its last character.  */
    if (*d->__nextchar == '\0')
      ++d->optind;
 
    if (temp == NULL || c == ':')
      {
    if (print_errors)
      {
#if defined _LIBC && defined USE_IN_LIBIO
          char *buf;
          int n;
#endif
 
        if (d->__posixly_correct)
          {
        /* 1003.2 specifies the format of this message.  */
#if defined _LIBC && defined USE_IN_LIBIO
        n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
                argv[0], c);
#else
        fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
#endif
          }
        else
          {
#if defined _LIBC && defined USE_IN_LIBIO
        n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
                argv[0], c);
#else
        fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
#endif
          }
 
#if defined _LIBC && defined USE_IN_LIBIO
        if (n >= 0)
          {
        _IO_flockfile (stderr);
 
        int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
        ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
        __fxprintf (NULL, "%s", buf);
 
        ((_IO_FILE *) stderr)->_flags2 = old_flags2;
        _IO_funlockfile (stderr);
 
        free (buf);
          }
#endif
      }
    d->optopt = c;
    return '?';
      }
    /* Convenience. Treat POSIX -W foo same as long option --foo */
    if (temp[0] == 'W' && temp[1] == ';')
      {
    char *nameend;
    const struct option *p;
    const struct option *pfound = NULL;
    int exact = 0;
    int ambig = 0;
    int indfound = 0;
    int option_index;
 
    /* 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)
          {
        /* 1003.2 specifies the format of this message.  */
#if defined _LIBC && defined USE_IN_LIBIO
        char *buf;
 
        if (__asprintf (&buf,
                _("%s: option requires an argument -- %c\n"),
                argv[0], c) >= 0)
          {
            _IO_flockfile (stderr);
 
            int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
            ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
            __fxprintf (NULL, "%s", buf);
 
            ((_IO_FILE *) stderr)->_flags2 = old_flags2;
            _IO_funlockfile (stderr);
 
            free (buf);
          }
#else
        fprintf (stderr, _("%s: option requires an argument -- %c\n"),
             argv[0], c);
#endif
          }
        d->optopt = c;
        if (optstring[0] == ':')
          c = ':';
        else
          c = '?';
        return c;
      }
    else
      /* We already incremented `d->optind' once;
         increment it again when taking next ARGV-elt as argument.  */
      d->optarg = argv[d->optind++];
 
    /* optarg is now the argument, see if it's in the
       table of longopts.  */
 
    for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
         nameend++)
      /* Do nothing.  */ ;
 
    /* Test all long options for either exact match
       or abbreviated matches.  */
    for (p = longopts, option_index = 0; p->name; p++, option_index++)
      if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
        {
          if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
        {
          /* Exact match found.  */
          pfound = p;
          indfound = option_index;
          exact = 1;
          break;
        }
          else if (pfound == NULL)
        {
          /* First nonexact match found.  */
          pfound = p;
          indfound = option_index;
        }
          else
        /* Second or later nonexact match found.  */
        ambig = 1;
        }
    if (ambig && !exact)
      {
        if (print_errors)
          {
#if defined _LIBC && defined USE_IN_LIBIO
        char *buf;
 
        if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
                argv[0], argv[d->optind]) >= 0)
          {
            _IO_flockfile (stderr);
 
            int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
            ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
            __fxprintf (NULL, "%s", buf);
 
            ((_IO_FILE *) stderr)->_flags2 = old_flags2;
            _IO_funlockfile (stderr);
 
            free (buf);
          }
#else
        fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
             argv[0], argv[d->optind]);
#endif
          }
        d->__nextchar += strlen (d->__nextchar);
        d->optind++;
        return '?';
      }
    if (pfound != NULL)
      {
        option_index = indfound;
        if (*nameend)
          {
        /* Don't test has_arg with >, because some C compilers don't
           allow it to be used on enums.  */
        if (pfound->has_arg)
          d->optarg = nameend + 1;
        else
          {
            if (print_errors)
              {
#if defined _LIBC && defined USE_IN_LIBIO
            char *buf;
 
            if (__asprintf (&buf, _("\
%s: option `-W %s' doesn't allow an argument\n"),
                    argv[0], pfound->name) >= 0)
              {
                _IO_flockfile (stderr);
 
                int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                ((_IO_FILE *) stderr)->_flags2
                  |= _IO_FLAGS2_NOTCANCEL;
 
                __fxprintf (NULL, "%s", buf);
 
                ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                _IO_funlockfile (stderr);
 
                free (buf);
              }
#else
            fprintf (stderr, _("\
%s: option `-W %s' doesn't allow an argument\n"),
                 argv[0], pfound->name);
#endif
              }
 
            d->__nextchar += strlen (d->__nextchar);
            return '?';
          }
          }
        else if (pfound->has_arg == 1)
          {
        if (d->optind < argc)
          d->optarg = argv[d->optind++];
        else
          {
            if (print_errors)
              {
#if defined _LIBC && defined USE_IN_LIBIO
            char *buf;
 
            if (__asprintf (&buf, _("\
%s: option `%s' requires an argument\n"),
                    argv[0], argv[d->optind - 1]) >= 0)
              {
                _IO_flockfile (stderr);
 
                int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                ((_IO_FILE *) stderr)->_flags2
                  |= _IO_FLAGS2_NOTCANCEL;
 
                __fxprintf (NULL, "%s", buf);
 
                ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                _IO_funlockfile (stderr);
 
                free (buf);
              }
#else
            fprintf (stderr,
                 _("%s: option `%s' requires an argument\n"),
                 argv[0], argv[d->optind - 1]);
#endif
              }
            d->__nextchar += strlen (d->__nextchar);
            return optstring[0] == ':' ? ':' : '?';
          }
          }
        d->__nextchar += strlen (d->__nextchar);
        if (longind != NULL)
          *longind = option_index;
        if (pfound->flag)
          {
        *(pfound->flag) = pfound->val;
        return 0;
          }
        return pfound->val;
      }
      d->__nextchar = NULL;
      return 'W';   /* Let the application handle it.   */
      }
    if (temp[1] == ':')
      {
    if (temp[2] == ':')
      {
        /* This is an option that accepts an argument optionally.  */
        if (*d->__nextchar != '\0')
          {
        d->optarg = d->__nextchar;
        d->optind++;
          }
        else
          d->optarg = NULL;
        d->__nextchar = NULL;
      }
    else
      {
        /* This is an option that requires an argument.  */
        if (*d->__nextchar != '\0')
          {
        d->optarg = d->__nextchar;
        /* If we end this ARGV-element by taking the rest as an arg,
           we must advance to the next element now.  */
        d->optind++;
          }
        else if (d->optind == argc)
          {
        if (print_errors)
          {
            /* 1003.2 specifies the format of this message.  */
#if defined _LIBC && defined USE_IN_LIBIO
            char *buf;
 
            if (__asprintf (&buf, _("\
%s: option requires an argument -- %c\n"),
                    argv[0], c) >= 0)
              {
            _IO_flockfile (stderr);
 
            int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
            ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
            __fxprintf (NULL, "%s", buf);
 
            ((_IO_FILE *) stderr)->_flags2 = old_flags2;
            _IO_funlockfile (stderr);
 
            free (buf);
              }
#else
            fprintf (stderr,
                 _("%s: option requires an argument -- %c\n"),
                 argv[0], c);
#endif
          }
        d->optopt = c;
        if (optstring[0] == ':')
          c = ':';
        else
          c = '?';
          }
        else
          /* We already incremented `optind' once;
         increment it again when taking next ARGV-elt as argument.  */
          d->optarg = argv[d->optind++];
        d->__nextchar = NULL;
      }
      }
    return c;
  }
}

References _, _getopt_initialize(), argv, c, d, exchange(), option::flag, free(), option::has_arg, n, option::name, NONOPTION_P, NULL, p, PERMUTE, posixly_correct, REQUIRE_ORDER, and option::val.

Referenced by _getopt_internal(), _getopt_long_only_r(), and _getopt_long_r().

_getopt_long_only_r()

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

Definition at line 72 of file getopt1.c.

{
  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
                 1, 0, d);
}

References _getopt_internal_r(), argv, d, and options.

_getopt_long_r()

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

Definition at line 49 of file getopt1.c.

{
  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
                 0, 0, d);
}

References _getopt_internal_r(), argv, d, and options.