getopt_int.h

00001 /* Internal declarations for getopt.
00002    Copyright (C) 1989-1994,1996-1999,2001,2003,2004
00003    Free Software Foundation, Inc.
00004    This file is part of the GNU C Library.
00005 
00006    This program is free software; you can redistribute it and/or modify
00007    it under the terms of the GNU Lesser General Public License as published by
00008    the Free Software Foundation; either version 2.1, or (at your option)
00009    any later version.
00010 
00011    This program is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014    GNU Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public License along
00017    with this program; if not, write to the Free Software Foundation,
00018    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
00019 
00020 #ifndef _GETOPT_INT_H
00021 #define _GETOPT_INT_H   1
00022 
00023 #include <config.h>
00024 
00025 extern int _getopt_internal (int ___argc, char **___argv,
00026                              const char *__shortopts,
00027                              const struct option *__longopts, int *__longind,
00028                              int __long_only, int __posixly_correct);
00029 
00030 
00031 /* Reentrant versions which can handle parsing multiple argument
00032    vectors at the same time.  */
00033 
00034 /* Data type for reentrant functions.  */
00035 struct _getopt_data
00036 {
00037   /* These have exactly the same meaning as the corresponding global
00038      variables, except that they are used for the reentrant
00039      versions of getopt.  */
00040   int optind;
00041   int opterr;
00042   int optopt;
00043   char *optarg;
00044 
00045   /* Internal members.  */
00046 
00047   /* True if the internal members have been initialized.  */
00048   int __initialized;
00049 
00050   /* The next char to be scanned in the option-element
00051      in which the last option character we returned was found.
00052      This allows us to pick up the scan where we left off.
00053 
00054      If this is zero, or a null string, it means resume the scan
00055      by advancing to the next ARGV-element.  */
00056   char *__nextchar;
00057 
00058   /* Describe how to deal with options that follow non-option ARGV-elements.
00059 
00060      If the caller did not specify anything,
00061      the default is REQUIRE_ORDER if the environment variable
00062      POSIXLY_CORRECT is defined, PERMUTE otherwise.
00063 
00064      REQUIRE_ORDER means don't recognize them as options;
00065      stop option processing when the first non-option is seen.
00066      This is what Unix does.
00067      This mode of operation is selected by either setting the environment
00068      variable POSIXLY_CORRECT, or using `+' as the first character
00069      of the list of option characters, or by calling getopt.
00070 
00071      PERMUTE is the default.  We permute the contents of ARGV as we
00072      scan, so that eventually all the non-options are at the end.
00073      This allows options to be given in any order, even with programs
00074      that were not written to expect this.
00075 
00076      RETURN_IN_ORDER is an option available to programs that were
00077      written to expect options and other ARGV-elements in any order
00078      and that care about the ordering of the two.  We describe each
00079      non-option ARGV-element as if it were the argument of an option
00080      with character code 1.  Using `-' as the first character of the
00081      list of option characters selects this mode of operation.
00082 
00083      The special argument `--' forces an end of option-scanning regardless
00084      of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
00085      `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
00086 
00087   enum
00088     {
00089       REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
00090     } __ordering;
00091 
00092   /* If the POSIXLY_CORRECT environment variable is set
00093      or getopt was called.  */
00094   int __posixly_correct;
00095 
00096 
00097   /* Handle permutation of arguments.  */
00098 
00099   /* Describe the part of ARGV that contains non-options that have
00100      been skipped.  `first_nonopt' is the index in ARGV of the first
00101      of them; `last_nonopt' is the index after the last of them.  */
00102 
00103   int __first_nonopt;
00104   int __last_nonopt;
00105 
00106 #if defined _LIBC && defined USE_NONOPTION_FLAGS
00107   int __nonoption_flags_max_len;
00108   int __nonoption_flags_len;
00109 # endif
00110 };
00111 
00112 /* The initializer is necessary to set OPTIND and OPTERR to their
00113    default values and to clear the initialization flag.  */
00114 #define _GETOPT_DATA_INITIALIZER        { 1, 1 }
00115 
00116 extern int _getopt_internal_r (int ___argc, char **___argv,
00117                                const char *__shortopts,
00118                                const struct option *__longopts, int *__longind,
00119                                int __long_only, int __posixly_correct,
00120                                struct _getopt_data *__data);
00121 
00122 extern int _getopt_long_r (int ___argc, char **___argv,
00123                            const char *__shortopts,
00124                            const struct option *__longopts, int *__longind,
00125                            struct _getopt_data *__data);
00126 
00127 extern int _getopt_long_only_r (int ___argc, char **___argv,
00128                                 const char *__shortopts,
00129                                 const struct option *__longopts,
00130                                 int *__longind,
00131                                 struct _getopt_data *__data);
00132 
00133 #endif /* getopt_int.h */

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