1 /* Internal declarations for getopt. 2 Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2004, 2009-2012 Free Software 3 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 3 of the License, or 9 (at your option) 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 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #ifndef _GETOPT_INT_H 20 #define _GETOPT_INT_H 1 21 22 #include <getopt.h> 23 24 extern int _getopt_internal (int ___argc, char **___argv, 25 const char *__shortopts, 26 const struct option *__longopts, int *__longind, 27 int __long_only, int __posixly_correct); 28 29 30 /* Reentrant versions which can handle parsing multiple argument 32 vectors at the same time. */ 33 34 /* Describe how to deal with options that follow non-option ARGV-elements. 35 36 If the caller did not specify anything, 37 the default is REQUIRE_ORDER if the environment variable 38 POSIXLY_CORRECT is defined, PERMUTE otherwise. 39 40 REQUIRE_ORDER means don't recognize them as options; 41 stop option processing when the first non-option is seen. 42 This is what Unix does. 43 This mode of operation is selected by either setting the environment 44 variable POSIXLY_CORRECT, or using '+' as the first character 45 of the list of option characters, or by calling getopt. 46 47 PERMUTE is the default. We permute the contents of ARGV as we 48 scan, so that eventually all the non-options are at the end. 49 This allows options to be given in any order, even with programs 50 that were not written to expect this. 51 52 RETURN_IN_ORDER is an option available to programs that were 53 written to expect options and other ARGV-elements in any order 54 and that care about the ordering of the two. We describe each 55 non-option ARGV-element as if it were the argument of an option 56 with character code 1. Using '-' as the first character of the 57 list of option characters selects this mode of operation. 58 59 The special argument '--' forces an end of option-scanning regardless 60 of the value of 'ordering'. In the case of RETURN_IN_ORDER, only 61 '--' can cause 'getopt' to return -1 with 'optind' != ARGC. */ 62 63 enum __ord 64 { 65 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER 66 }; 67 68 /* Data type for reentrant functions. */ 69 struct _getopt_data 70 { 71 /* These have exactly the same meaning as the corresponding global 72 variables, except that they are used for the reentrant 73 versions of getopt. */ 74 int optind; 75 int opterr; 76 int optopt; 77 char *optarg; 78 79 /* Internal members. */ 80 81 /* True if the internal members have been initialized. */ 82 int __initialized; 83 84 /* The next char to be scanned in the option-element 85 in which the last option character we returned was found. 86 This allows us to pick up the scan where we left off. 87 88 If this is zero, or a null string, it means resume the scan 89 by advancing to the next ARGV-element. */ 90 char *__nextchar; 91 92 /* See __ord above. */ 93 enum __ord __ordering; 94 95 /* If the POSIXLY_CORRECT environment variable is set 96 or getopt was called. */ 97 int __posixly_correct; 98 99 100 /* Handle permutation of arguments. */ 101 102 /* Describe the part of ARGV that contains non-options that have 103 been skipped. 'first_nonopt' is the index in ARGV of the first 104 of them; 'last_nonopt' is the index after the last of them. */ 105 106 int __first_nonopt; 107 int __last_nonopt; 108 109 #if defined _LIBC && defined USE_NONOPTION_FLAGS 110 int __nonoption_flags_max_len; 111 int __nonoption_flags_len; 112 #endif 113 }; 114 115 /* The initializer is necessary to set OPTIND and OPTERR to their 116 default values and to clear the initialization flag. */ 117 #define _GETOPT_DATA_INITIALIZER { 1, 1 } 118 119 extern int _getopt_internal_r (int ___argc, char **___argv, 120 const char *__shortopts, 121 const struct option *__longopts, int *__longind, 122 int __long_only, struct _getopt_data *__data, 123 int __posixly_correct); 124 125 extern int _getopt_long_r (int ___argc, char **___argv, 126 const char *__shortopts, 127 const struct option *__longopts, int *__longind, 128 struct _getopt_data *__data); 129 130 extern int _getopt_long_only_r (int ___argc, char **___argv, 131 const char *__shortopts, 132 const struct option *__longopts, 133 int *__longind, 134 struct _getopt_data *__data); 135 136 #endif /* getopt_int.h */ 137
