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