gnu/dist/groff/src/include/getopt_int.h

   1 /*      $NetBSD$        */
   2
   3 /* Internal declarations for getopt.
   4    Copyright (C) 1989-1994,1996-1999,2001,2003,2004
   5    Free Software Foundation, Inc.
   6    This file is part of the GNU C Library.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License along
  19    with this program; if not, write to the Free Software Foundation,
  20    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef _GETOPT_INT_H
  23 #define _GETOPT_INT_H   1
  24
  25 extern int _getopt_internal (int ___argc, char **___argv,
  26                              const char *__shortopts,
  27                              const struct option *__longopts, int *__longind,
  28                              int __long_only, int __posixly_correct);
  29
  30 \f
  31 /* Reentrant versions which can handle parsing multiple argument
  32    vectors at the same time.  */
  33
  34 /* Data type for reentrant functions.  */
  35 struct _getopt_data
  36 {
  37   /* These have exactly the same meaning as the corresponding global
  38      variables, except that they are used for the reentrant
  39      versions of getopt.  */
  40   int optind;
  41   int opterr;
  42   int optopt;
  43   char *optarg;
  44
  45   /* Internal members.  */
  46
  47   /* True if the internal members have been initialized.  */
  48   int __initialized;
  49
  50   /* The next char to be scanned in the option-element
  51      in which the last option character we returned was found.
  52      This allows us to pick up the scan where we left off.
  53
  54      If this is zero, or a null string, it means resume the scan
  55      by advancing to the next ARGV-element.  */
  56   char *__nextchar;
  57
  58   /* Describe how to deal with options that follow non-option ARGV-elements.
  59
  60      If the caller did not specify anything,
  61      the default is REQUIRE_ORDER if the environment variable
  62      POSIXLY_CORRECT is defined, PERMUTE otherwise.
  63
  64      REQUIRE_ORDER means don't recognize them as options;
  65      stop option processing when the first non-option is seen.
  66      This is what Unix does.
  67      This mode of operation is selected by either setting the environment
  68      variable POSIXLY_CORRECT, or using `+' as the first character
  69      of the list of option characters, or by calling getopt.
  70
  71      PERMUTE is the default.  We permute the contents of ARGV as we
  72      scan, so that eventually all the non-options are at the end.
  73      This allows options to be given in any order, even with programs
  74      that were not written to expect this.
  75
  76      RETURN_IN_ORDER is an option available to programs that were
  77      written to expect options and other ARGV-elements in any order
  78      and that care about the ordering of the two.  We describe each
  79      non-option ARGV-element as if it were the argument of an option
  80      with character code 1.  Using `-' as the first character of the
  81      list of option characters selects this mode of operation.
  82
  83      The special argument `--' forces an end of option-scanning regardless
  84      of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
  85      `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
  86
  87   enum
  88     {
  89       REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
  90     } __ordering;
  91
  92   /* If the POSIXLY_CORRECT environment variable is set
  93      or getopt was called.  */
  94   int __posixly_correct;
  95
  96
  97   /* Handle permutation of arguments.  */
  98
  99   /* Describe the part of ARGV that contains non-options that have
 100      been skipped.  `first_nonopt' is the index in ARGV of the first
 101      of them; `last_nonopt' is the index after the last of them.  */
 102
 103   int __first_nonopt;
 104   int __last_nonopt;
 105
 106 #if defined _LIBC && defined USE_NONOPTION_FLAGS
 107   int __nonoption_flags_max_len;
 108   int __nonoption_flags_len;
 109 # endif
 110 };
 111
 112 /* The initializer is necessary to set OPTIND and OPTERR to their
 113    default values and to clear the initialization flag.  */
 114 #define _GETOPT_DATA_INITIALIZER        { 1, 1 }
 115
 116 extern int _getopt_internal_r (int ___argc, char **___argv,
 117                                const char *__shortopts,
 118                                const struct option *__longopts, int *__longind,
 119                                int __long_only, int __posixly_correct,
 120                                struct _getopt_data *__data);
 121
 122 extern int _getopt_long_r (int ___argc, char **___argv,
 123                            const char *__shortopts,
 124                            const struct option *__longopts, int *__longind,
 125                            struct _getopt_data *__data);
 126
 127 extern int _getopt_long_only_r (int ___argc, char **___argv,
 128                                 const char *__shortopts,
 129                                 const struct option *__longopts,
 130                                 int *__longind,
 131                                 struct _getopt_data *__data);
 132
 133 #endif /* getopt_int.h */