[3213] | 1 | /* Reentrant version of getopt.
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| 2 |
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| 3 | Based on ../getopt*.*:
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| 4 |
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| 5 | Getopt for GNU.
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[503] | 6 | NOTE: getopt is now part of the C library, so if you don't know what
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| 7 | "Keep this file name-space clean" means, talk to drepper@gnu.org
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| 8 | before changing it!
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[53] | 9 |
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[3140] | 10 | Copyright (C) 1987-2016 Free Software Foundation, Inc.
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[53] | 11 |
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[503] | 12 | NOTE: The canonical source of this file is maintained with the GNU C Library.
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| 13 | Bugs can be reported to bug-glibc@gnu.org.
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[53] | 14 |
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[1993] | 15 | GNU Make is free software; you can redistribute it and/or modify it under the
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| 16 | terms of the GNU General Public License as published by the Free Software
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| 17 | Foundation; either version 3 of the License, or (at your option) any later
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| 18 | version.
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[53] | 19 |
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[1993] | 20 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 21 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 22 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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[53] | 23 |
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[503] | 24 | You should have received a copy of the GNU General Public License along with
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[3213] | 25 | this program. If not, see <http://www.gnu.org/licenses/>.
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[503] | 26 |
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[3213] | 27 | Modifications:
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| 28 | Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
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| 29 | */
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| 30 |
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[53] | 31 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
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| 32 | Ditto for AIX 3.2 and <stdlib.h>. */
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| 33 | #ifndef _NO_PROTO
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| 34 | # define _NO_PROTO
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| 35 | #endif
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| 36 |
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[3213] | 37 | #define FAKES_NO_GETOPT_H /* bird */
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[53] | 38 | #ifdef HAVE_CONFIG_H
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| 39 | # include <config.h>
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| 40 | #endif
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| 41 |
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| 42 | #if !defined __STDC__ || !__STDC__
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| 43 | /* This is a separate conditional since some stdc systems
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| 44 | reject `defined (const)'. */
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| 45 | # ifndef const
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| 46 | # define const
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| 47 | # endif
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| 48 | #endif
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| 49 |
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| 50 | #include <stdio.h>
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| 51 |
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[3213] | 52 | #if 0
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[53] | 53 | /* Comment out all this code if we are using the GNU C Library, and are not
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| 54 | actually compiling the library itself. This code is part of the GNU C
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| 55 | Library, but also included in many other GNU distributions. Compiling
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| 56 | and linking in this code is a waste when using the GNU C library
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| 57 | (especially if it is a shared library). Rather than having every GNU
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| 58 | program understand `configure --with-gnu-libc' and omit the object files,
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| 59 | it is simpler to just do this in the source for each such file. */
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| 60 |
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| 61 | #define GETOPT_INTERFACE_VERSION 2
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| 62 | #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
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| 63 | # include <gnu-versions.h>
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| 64 | # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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| 65 | # define ELIDE_CODE
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| 66 | # endif
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| 67 | #endif
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[3213] | 68 | #endif
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[53] | 69 |
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[3213] | 70 | #if 1 //ndef ELIDE_CODE
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[53] | 71 |
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| 72 |
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| 73 | /* This needs to come after some library #include
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| 74 | to get __GNU_LIBRARY__ defined. */
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| 75 | #ifdef __GNU_LIBRARY__
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| 76 | /* Don't include stdlib.h for non-GNU C libraries because some of them
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| 77 | contain conflicting prototypes for getopt. */
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| 78 | # include <stdlib.h>
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| 79 | # include <unistd.h>
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| 80 | #endif /* GNU C library. */
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[3232] | 81 | #include <stdlib.h> /* bird: we don't define getopt, so we're good. */
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[53] | 82 |
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| 83 | #ifdef VMS
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| 84 | # include <unixlib.h>
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| 85 | # if HAVE_STRING_H - 0
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| 86 | # include <string.h>
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| 87 | # endif
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| 88 | #endif
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| 89 |
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| 90 | /* This is for other GNU distributions with internationalized messages.
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| 91 | When compiling libc, the _ macro is predefined. */
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| 92 | #include "gettext.h"
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| 93 | #define _(msgid) gettext (msgid)
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| 94 |
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| 95 |
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[3140] | 96 | /* This version of `getopt' appears to the caller like standard Unix 'getopt'
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[53] | 97 | but it behaves differently for the user, since it allows the user
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| 98 | to intersperse the options with the other arguments.
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| 99 |
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| 100 | As `getopt' works, it permutes the elements of ARGV so that,
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| 101 | when it is done, all the options precede everything else. Thus
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| 102 | all application programs are extended to handle flexible argument order.
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| 103 |
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| 104 | Setting the environment variable POSIXLY_CORRECT disables permutation.
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| 105 | Then the behavior is completely standard.
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| 106 |
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| 107 | GNU application programs can use a third alternative mode in which
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| 108 | they can distinguish the relative order of options and other arguments. */
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| 109 |
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[3213] | 110 | #include "getopt_r.h"
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| 111 | #include "err.h"
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| 112 | #include <assert.h>
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[53] | 113 |
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[3213] | 114 | #if 0 /* Moved to state_getopt_r in getopt_r.h. */
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[53] | 115 | /* For communication from `getopt' to the caller.
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| 116 | When `getopt' finds an option that takes an argument,
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| 117 | the argument value is returned here.
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| 118 | Also, when `ordering' is RETURN_IN_ORDER,
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| 119 | each non-option ARGV-element is returned here. */
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| 120 |
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| 121 | char *optarg = NULL;
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| 122 |
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| 123 | /* Index in ARGV of the next element to be scanned.
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| 124 | This is used for communication to and from the caller
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| 125 | and for communication between successive calls to `getopt'.
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| 126 |
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| 127 | On entry to `getopt', zero means this is the first call; initialize.
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| 128 |
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| 129 | When `getopt' returns -1, this is the index of the first of the
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| 130 | non-option elements that the caller should itself scan.
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| 131 |
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| 132 | Otherwise, `optind' communicates from one call to the next
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| 133 | how much of ARGV has been scanned so far. */
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| 134 |
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| 135 | /* 1003.2 says this must be 1 before any call. */
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| 136 | int optind = 1;
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| 137 |
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| 138 | /* Formerly, initialization of getopt depended on optind==0, which
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| 139 | causes problems with re-calling getopt as programs generally don't
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| 140 | know that. */
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| 141 |
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| 142 | int __getopt_initialized = 0;
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| 143 |
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| 144 | /* The next char to be scanned in the option-element
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| 145 | in which the last option character we returned was found.
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| 146 | This allows us to pick up the scan where we left off.
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| 147 |
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| 148 | If this is zero, or a null string, it means resume the scan
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| 149 | by advancing to the next ARGV-element. */
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| 150 |
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| 151 | static char *nextchar;
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| 152 |
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| 153 | /* Callers store zero here to inhibit the error message
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| 154 | for unrecognized options. */
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| 155 |
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| 156 | int opterr = 1;
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| 157 |
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| 158 | /* Set to an option character which was unrecognized.
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| 159 | This must be initialized on some systems to avoid linking in the
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| 160 | system's own getopt implementation. */
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| 161 |
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| 162 | int optopt = '?';
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[3213] | 163 | #endif /* Moved to state_getopt_r in getopt_r.h. */
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[53] | 164 |
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| 165 | /* Describe how to deal with options that follow non-option ARGV-elements.
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| 166 |
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| 167 | If the caller did not specify anything,
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| 168 | the default is REQUIRE_ORDER if the environment variable
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| 169 | POSIXLY_CORRECT is defined, PERMUTE otherwise.
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| 170 |
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| 171 | REQUIRE_ORDER means don't recognize them as options;
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| 172 | stop option processing when the first non-option is seen.
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| 173 | This is what Unix does.
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| 174 | This mode of operation is selected by either setting the environment
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| 175 | variable POSIXLY_CORRECT, or using `+' as the first character
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| 176 | of the list of option characters.
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| 177 |
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| 178 | PERMUTE is the default. We permute the contents of ARGV as we scan,
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| 179 | so that eventually all the non-options are at the end. This allows options
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| 180 | to be given in any order, even with programs that were not written to
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| 181 | expect this.
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| 182 |
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| 183 | RETURN_IN_ORDER is an option available to programs that were written
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| 184 | to expect options and other ARGV-elements in any order and that care about
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| 185 | the ordering of the two. We describe each non-option ARGV-element
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| 186 | as if it were the argument of an option with character code 1.
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| 187 | Using `-' as the first character of the list of option characters
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| 188 | selects this mode of operation.
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| 189 |
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| 190 | The special argument `--' forces an end of option-scanning regardless
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| 191 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only
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| 192 | `--' can cause `getopt' to return -1 with `optind' != ARGC. */
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| 193 |
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[3213] | 194 | /*static*/ enum
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[53] | 195 | {
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| 196 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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[3213] | 197 | } /*ordering*/;
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[53] | 198 |
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[3213] | 199 | #if 0 /* Moved to state_getopt_r in getopt_r.h. */
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[53] | 200 | /* Value of POSIXLY_CORRECT environment variable. */
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| 201 | static char *posixly_correct;
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[3213] | 202 | #endif
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| 203 |
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[53] | 204 | |
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[3213] | 205 |
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[53] | 206 | #if 1 //def __GNU_LIBRARY__
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| 207 | /* We want to avoid inclusion of string.h with non-GNU libraries
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| 208 | because there are many ways it can cause trouble.
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| 209 | On some systems, it contains special magic macros that don't work
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| 210 | in GCC. */
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[3213] | 211 | # include <string.h>
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[53] | 212 | //# define my_index strchr
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| 213 | #else
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| 214 |
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| 215 | # if HAVE_STRING_H
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| 216 | # include <string.h>
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| 217 | # else
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| 218 | # include <strings.h>
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| 219 | # endif
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[3213] | 220 |
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[53] | 221 | #if 0 //def
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| 222 | /* Avoid depending on library functions or files
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| 223 | whose names are inconsistent. */
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| 224 | #ifndef getenv
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| 225 | extern char *getenv ();
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[3213] | 226 | #endif
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[53] | 227 | #endif
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| 228 |
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| 229 | static char *
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| 230 | my_index (const char *str, int chr)
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| 231 | {
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| 232 | while (*str)
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| 233 | {
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| 234 | if (*str == chr)
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| 235 | return (char *) str;
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| 236 | str++;
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| 237 | }
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| 238 | return 0;
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| 239 | }
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| 240 |
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| 241 | /* If using GCC, we can safely declare strlen this way.
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| 242 | If not using GCC, it is ok not to declare it. */
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| 243 | #ifdef __GNUC__
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| 244 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
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| 245 | That was relevant to code that was here before. */
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| 246 | # if (!defined __STDC__ || !__STDC__) && !defined strlen
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| 247 | /* gcc with -traditional declares the built-in strlen to return int,
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| 248 | and has done so at least since version 2.4.5. -- rms. */
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| 249 | extern int strlen (const char *);
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| 250 | # endif /* not __STDC__ */
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| 251 | #endif /* __GNUC__ */
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| 252 |
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| 253 | #endif /* not __GNU_LIBRARY__ */
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| 254 | |
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| 255 |
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[3213] | 256 | /* Handle permutation of arguments. */
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[53] | 257 |
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| 258 | #if 0 /* Moved to state_getopt_r in getopt_r.h. */
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| 259 | /* Describe the part of ARGV that contains non-options that have
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| 260 | been skipped. `first_nonopt' is the index in ARGV of the first of them;
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| 261 | `last_nonopt' is the index after the last of them. */
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| 262 |
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[3213] | 263 | static int first_nonopt;
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[53] | 264 | static int last_nonopt;
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[3213] | 265 | #endif
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[53] | 266 |
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| 267 | #if 0 //def _LIBC
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| 268 | /* Bash 2.0 gives us an environment variable containing flags
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| 269 | indicating ARGV elements that should not be considered arguments. */
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| 270 |
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| 271 | /* Defined in getopt_init.c */
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| 272 | extern char *__getopt_nonoption_flags;
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| 273 |
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| 274 | static int nonoption_flags_max_len;
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| 275 | static int nonoption_flags_len;
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| 276 |
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| 277 | static int original_argc;
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| 278 | static char *const *original_argv;
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| 279 |
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| 280 | /* Make sure the environment variable bash 2.0 puts in the environment
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| 281 | is valid for the getopt call we must make sure that the ARGV passed
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| 282 | to getopt is that one passed to the process. */
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| 283 | static void __attribute__ ((unused))
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| 284 | store_args_and_env (int argc, char *const *argv)
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| 285 | {
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| 286 | /* XXX This is no good solution. We should rather copy the args so
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| 287 | that we can compare them later. But we must not use malloc(3). */
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| 288 | original_argc = argc;
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| 289 | original_argv = argv;
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| 290 | }
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| 291 | # ifdef text_set_element
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| 292 | text_set_element (__libc_subinit, store_args_and_env);
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| 293 | # endif /* text_set_element */
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| 294 |
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| 295 | # define SWAP_FLAGS(ch1, ch2) \
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| 296 | if (nonoption_flags_len > 0) \
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| 297 | { \
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| 298 | char __tmp = __getopt_nonoption_flags[ch1]; \
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| 299 | __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
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| 300 | __getopt_nonoption_flags[ch2] = __tmp; \
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[3213] | 301 | }
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[53] | 302 | #else /* !_LIBC */
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| 303 | # define SWAP_FLAGS(ch1, ch2) do { } while (0)
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| 304 | #endif /* _LIBC */
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| 305 |
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| 306 | /* Exchange two adjacent subsequences of ARGV.
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| 307 | One subsequence is elements [first_nonopt,last_nonopt)
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| 308 | which contains all the non-options that have been skipped so far.
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| 309 | The other is elements [last_nonopt,optind), which contains all
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| 310 | the options processed since those non-options were skipped.
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| 311 |
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| 312 | `first_nonopt' and `last_nonopt' are relocated so that they describe
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| 313 | the new indices of the non-options in ARGV after they are moved. */
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[3213] | 314 |
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[53] | 315 | static void
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[3213] | 316 | exchange (struct getopt_state_r *gos, char **argv)
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| 317 | {
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| 318 | int bottom = gos->first_nonopt;
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[53] | 319 | int middle = gos->last_nonopt;
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| 320 | int top = gos->optind;
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| 321 | char *tem;
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| 322 |
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| 323 | /* Exchange the shorter segment with the far end of the longer segment.
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| 324 | That puts the shorter segment into the right place.
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| 325 | It leaves the longer segment in the right place overall,
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[3213] | 326 | but it consists of two parts that need to be swapped next. */
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[53] | 327 |
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| 328 | #if 0 //def _LIBC
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| 329 | /* First make sure the handling of the `__getopt_nonoption_flags'
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| 330 | string can work normally. Our top argument must be in the range
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| 331 | of the string. */
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| 332 | if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
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| 333 | {
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| 334 | /* We must extend the array. The user plays games with us and
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| 335 | presents new arguments. */
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| 336 | char *new_str = malloc (top + 1);
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| 337 | if (new_str == NULL)
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| 338 | nonoption_flags_len = nonoption_flags_max_len = 0;
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| 339 | else
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| 340 | {
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| 341 | memset (__mempcpy (new_str, __getopt_nonoption_flags,
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| 342 | nonoption_flags_max_len),
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| 343 | '\0', top + 1 - nonoption_flags_max_len);
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| 344 | nonoption_flags_max_len = top + 1;
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| 345 | __getopt_nonoption_flags = new_str;
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| 346 | }
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| 347 | }
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| 348 | #endif
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| 349 |
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| 350 | while (top > middle && middle > bottom)
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| 351 | {
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| 352 | if (top - middle > middle - bottom)
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| 353 | {
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| 354 | /* Bottom segment is the short one. */
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| 355 | int len = middle - bottom;
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| 356 | register int i;
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| 357 |
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| 358 | /* Swap it with the top part of the top segment. */
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| 359 | for (i = 0; i < len; i++)
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| 360 | {
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| 361 | tem = argv[bottom + i];
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| 362 | argv[bottom + i] = argv[top - (middle - bottom) + i];
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| 363 | argv[top - (middle - bottom) + i] = tem;
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| 364 | SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
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| 365 | }
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| 366 | /* Exclude the moved bottom segment from further swapping. */
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| 367 | top -= len;
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| 368 | }
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| 369 | else
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| 370 | {
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| 371 | /* Top segment is the short one. */
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| 372 | int len = top - middle;
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| 373 | register int i;
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| 374 |
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| 375 | /* Swap it with the bottom part of the bottom segment. */
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| 376 | for (i = 0; i < len; i++)
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| 377 | {
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| 378 | tem = argv[bottom + i];
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| 379 | argv[bottom + i] = argv[middle + i];
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| 380 | argv[middle + i] = tem;
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| 381 | SWAP_FLAGS (bottom + i, middle + i);
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| 382 | }
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| 383 | /* Exclude the moved top segment from further swapping. */
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| 384 | bottom += len;
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| 385 | }
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| 386 | }
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| 387 |
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[3213] | 388 | /* Update records for the slots the non-options now occupy. */
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| 389 |
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[53] | 390 | gos->first_nonopt += (gos->optind - gos->last_nonopt);
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| 391 | gos->last_nonopt = gos->optind;
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[3213] | 392 | }
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[53] | 393 |
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[3213] | 394 | /* Initialize the internal data */
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| 395 |
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| 396 | void
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| 397 | getopt_initialize_r (struct getopt_state_r *gos, int argc,
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| 398 | char * const *argv, const char *shortopts,
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[53] | 399 | const struct option *long_options,
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[3213] | 400 | char **envp, struct KMKBUILTINCTX *pCtx)
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| 401 | {
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| 402 | assert (shortopts != NULL);
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| 403 |
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| 404 | /* General initialization. */
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| 405 | gos->optarg = NULL;
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| 406 | gos->optind = 1;
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| 407 | gos->__getopt_initialized = (void *)(uintptr_t)&exchange;
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| 408 | gos->opterr = 1;
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| 409 | gos->optopt = '?';
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| 410 | gos->argc = argc;
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| 411 | gos->argv = argv;
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| 412 | gos->optstring = shortopts;
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| 413 | gos->len_optstring = strlen (shortopts);
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| 414 | gos->long_options = long_options;
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[53] | 415 | gos->pCtx = pCtx;
|
---|
| 416 |
|
---|
| 417 | /* Start processing options with ARGV-element 1 (since ARGV-element 0
|
---|
| 418 | is the program name); the sequence of previously skipped
|
---|
[3213] | 419 | non-option ARGV-elements is empty. */
|
---|
[53] | 420 |
|
---|
[3213] | 421 | gos->first_nonopt = gos->last_nonopt = gos->optind;
|
---|
[53] | 422 |
|
---|
[3213] | 423 | gos->nextchar = NULL;
|
---|
| 424 |
|
---|
| 425 | if (!envp)
|
---|
| 426 | gos->posixly_correct = getenv("POSIXLY_CORRECT");
|
---|
| 427 | else
|
---|
| 428 | {
|
---|
| 429 | const char *psz;
|
---|
| 430 | size_t i = 0;
|
---|
| 431 | gos->posixly_correct = NULL;
|
---|
| 432 | while ((psz = envp[i]) != NULL)
|
---|
| 433 | {
|
---|
| 434 | if ( psz[0] == 'P'
|
---|
| 435 | && strncmp (psz, "POSIXLY_CORRECT=", sizeof("POSIXLY_CORRECT=") - 1) == 0)
|
---|
| 436 | {
|
---|
| 437 | gos->posixly_correct = psz + sizeof("POSIXLY_CORRECT=") - 1;
|
---|
| 438 | break;
|
---|
| 439 | }
|
---|
| 440 | i++;
|
---|
[53] | 441 | }
|
---|
| 442 | }
|
---|
| 443 |
|
---|
[3213] | 444 | /* Determine how to handle the ordering of options and nonoptions. */
|
---|
[53] | 445 |
|
---|
[3213] | 446 | if (shortopts[0] == '-')
|
---|
| 447 | {
|
---|
| 448 | gos->ordering = RETURN_IN_ORDER;
|
---|
[53] | 449 | gos->optstring++;
|
---|
[3213] | 450 | gos->len_optstring--;
|
---|
[53] | 451 | }
|
---|
[3213] | 452 | else if (shortopts[0] == '+')
|
---|
| 453 | {
|
---|
| 454 | gos->ordering = REQUIRE_ORDER;
|
---|
[53] | 455 | gos->optstring++;
|
---|
[3213] | 456 | gos->len_optstring--;
|
---|
| 457 | }
|
---|
[53] | 458 | else if (gos->posixly_correct != NULL)
|
---|
[3213] | 459 | gos->ordering = REQUIRE_ORDER;
|
---|
[53] | 460 | else
|
---|
[3213] | 461 | gos->ordering = PERMUTE;
|
---|
[53] | 462 |
|
---|
| 463 | #if 0 //def _LIBC
|
---|
| 464 | if (posixly_correct == NULL
|
---|
| 465 | && argc == original_argc && argv == original_argv)
|
---|
| 466 | {
|
---|
| 467 | if (nonoption_flags_max_len == 0)
|
---|
| 468 | {
|
---|
| 469 | if (__getopt_nonoption_flags == NULL
|
---|
| 470 | || __getopt_nonoption_flags[0] == '\0')
|
---|
| 471 | nonoption_flags_max_len = -1;
|
---|
| 472 | else
|
---|
| 473 | {
|
---|
| 474 | const char *orig_str = __getopt_nonoption_flags;
|
---|
| 475 | int len = nonoption_flags_max_len = strlen (orig_str);
|
---|
| 476 | if (nonoption_flags_max_len < argc)
|
---|
| 477 | nonoption_flags_max_len = argc;
|
---|
| 478 | __getopt_nonoption_flags =
|
---|
| 479 | (char *) malloc (nonoption_flags_max_len);
|
---|
| 480 | if (__getopt_nonoption_flags == NULL)
|
---|
| 481 | nonoption_flags_max_len = -1;
|
---|
| 482 | else
|
---|
| 483 | memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
|
---|
| 484 | '\0', nonoption_flags_max_len - len);
|
---|
| 485 | }
|
---|
| 486 | }
|
---|
| 487 | nonoption_flags_len = nonoption_flags_max_len;
|
---|
| 488 | }
|
---|
| 489 | else
|
---|
| 490 | nonoption_flags_len = 0;
|
---|
[3213] | 491 | #endif
|
---|
[53] | 492 |
|
---|
| 493 | //return optstring;
|
---|
| 494 | }
|
---|
| 495 | |
---|
| 496 |
|
---|
| 497 | /* Scan elements of ARGV (whose length is ARGC) for option characters
|
---|
| 498 | given in OPTSTRING.
|
---|
| 499 |
|
---|
| 500 | If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
---|
| 501 | then it is an option element. The characters of this element
|
---|
| 502 | (aside from the initial '-') are option characters. If `getopt'
|
---|
| 503 | is called repeatedly, it returns successively each of the option characters
|
---|
| 504 | from each of the option elements.
|
---|
| 505 |
|
---|
| 506 | If `getopt' finds another option character, it returns that character,
|
---|
| 507 | updating `optind' and `nextchar' so that the next call to `getopt' can
|
---|
| 508 | resume the scan with the following option character or ARGV-element.
|
---|
| 509 |
|
---|
| 510 | If there are no more option characters, `getopt' returns -1.
|
---|
| 511 | Then `optind' is the index in ARGV of the first ARGV-element
|
---|
| 512 | that is not an option. (The ARGV-elements have been permuted
|
---|
| 513 | so that those that are not options now come last.)
|
---|
| 514 |
|
---|
| 515 | OPTSTRING is a string containing the legitimate option characters.
|
---|
| 516 | If an option character is seen that is not listed in OPTSTRING,
|
---|
| 517 | return '?' after printing an error message. If you set `opterr' to
|
---|
| 518 | zero, the error message is suppressed but we still return '?'.
|
---|
| 519 |
|
---|
| 520 | If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
---|
| 521 | so the following text in the same ARGV-element, or the text of the following
|
---|
| 522 | ARGV-element, is returned in `optarg'. Two colons mean an option that
|
---|
| 523 | wants an optional arg; if there is text in the current ARGV-element,
|
---|
| 524 | it is returned in `optarg', otherwise `optarg' is set to zero.
|
---|
| 525 |
|
---|
| 526 | If OPTSTRING starts with `-' or `+', it requests different methods of
|
---|
| 527 | handling the non-option ARGV-elements.
|
---|
| 528 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
---|
| 529 |
|
---|
| 530 | Long-named options begin with `--' instead of `-'.
|
---|
| 531 | Their names may be abbreviated as long as the abbreviation is unique
|
---|
| 532 | or is an exact match for some defined option. If they have an
|
---|
| 533 | argument, it follows the option name in the same ARGV-element, separated
|
---|
| 534 | from the option name by a `=', or else the in next ARGV-element.
|
---|
| 535 | When `getopt' finds a long-named option, it returns 0 if that option's
|
---|
| 536 | `flag' field is nonzero, the value of the option's `val' field
|
---|
| 537 | if the `flag' field is zero.
|
---|
| 538 |
|
---|
| 539 | The elements of ARGV aren't really const, because we permute them.
|
---|
| 540 | But we pretend they're const in the prototype to be compatible
|
---|
| 541 | with other systems.
|
---|
| 542 |
|
---|
| 543 | LONGOPTS is a vector of `struct option' terminated by an
|
---|
| 544 | element containing a name which is zero.
|
---|
| 545 |
|
---|
| 546 | LONGIND returns the index in LONGOPT of the long-named option found.
|
---|
| 547 | It is only valid when a long-named option has been found by the most
|
---|
| 548 | recent call.
|
---|
| 549 |
|
---|
| 550 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
---|
[3213] | 551 | long-named options. */
|
---|
| 552 |
|
---|
[53] | 553 | int
|
---|
[3213] | 554 | _getopt_internal_r (struct getopt_state_r *gos, const struct option *longopts,
|
---|
| 555 | int *longind, int long_only)
|
---|
[53] | 556 | {
|
---|
[3213] | 557 | assert (gos->__getopt_initialized == (void *)(uintptr_t)&exchange);
|
---|
| 558 | gos->optarg = NULL;
|
---|
[53] | 559 |
|
---|
[3213] | 560 | #if 0 /* requires explicit call now */
|
---|
| 561 | if (gos->optind == 0 || !gos->__getopt_initialized)
|
---|
| 562 | {
|
---|
| 563 | if (gos->optind == 0)
|
---|
[53] | 564 | gos->optind = 1; /* Don't scan ARGV[0], the program name. */
|
---|
[3213] | 565 | optstring = _getopt_initialize_r (gos, gos->argc, gos->argv, optstring);
|
---|
| 566 | gos->__getopt_initialized = 1;
|
---|
| 567 | }
|
---|
[53] | 568 | #else
|
---|
| 569 | assert (gos->__getopt_initialized == (void *)(uintptr_t)&exchange);
|
---|
| 570 | #endif
|
---|
| 571 |
|
---|
| 572 | /* Test whether ARGV[optind] points to a non-option argument.
|
---|
[3213] | 573 | Either it does not have option syntax, or there is an environment flag
|
---|
| 574 | from the shell indicating it is not an option. The later information
|
---|
| 575 | is only used when the used in the GNU libc. */
|
---|
| 576 | #if 0 //def _LIBC
|
---|
[53] | 577 | # define NONOPTION_P (gos->argv[gos->optind][0] != '-' || gos->argv[gos->optind][1] == '\0' \
|
---|
[3213] | 578 | || (gos->optind < gos->nonoption_flags_len \
|
---|
[53] | 579 | && gos->__getopt_nonoption_flags[gos->optind] == '1'))
|
---|
| 580 | #else
|
---|
[3213] | 581 | # define NONOPTION_P (gos->argv[gos->optind][0] != '-' || gos->argv[gos->optind][1] == '\0')
|
---|
[53] | 582 | #endif
|
---|
| 583 |
|
---|
| 584 | if (gos->nextchar == NULL || *gos->nextchar == '\0')
|
---|
| 585 | {
|
---|
| 586 | /* Advance to the next ARGV-element. */
|
---|
[3213] | 587 |
|
---|
| 588 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
|
---|
| 589 | moved back by the user (who may also have changed the arguments). */
|
---|
| 590 | if (gos->last_nonopt > gos->optind)
|
---|
[53] | 591 | gos->last_nonopt = gos->optind;
|
---|
[3213] | 592 | if (gos->first_nonopt > gos->optind)
|
---|
[53] | 593 | gos->first_nonopt = gos->optind;
|
---|
| 594 |
|
---|
| 595 | if (gos->ordering == PERMUTE)
|
---|
| 596 | {
|
---|
[3213] | 597 | /* If we have just processed some options following some non-options,
|
---|
| 598 | exchange them so that the options come first. */
|
---|
| 599 |
|
---|
| 600 | if (gos->first_nonopt != gos->last_nonopt && gos->last_nonopt != gos->optind)
|
---|
[53] | 601 | exchange (gos, (char **) gos->argv);
|
---|
| 602 | else if (gos->last_nonopt != gos->optind)
|
---|
| 603 | gos->first_nonopt = gos->optind;
|
---|
| 604 |
|
---|
[3213] | 605 | /* Skip any additional non-options
|
---|
| 606 | and extend the range of non-options previously skipped. */
|
---|
| 607 |
|
---|
[53] | 608 | while (gos->optind < gos->argc && NONOPTION_P)
|
---|
| 609 | gos->optind++;
|
---|
| 610 | gos->last_nonopt = gos->optind;
|
---|
| 611 | }
|
---|
| 612 |
|
---|
| 613 | /* The special ARGV-element `--' means premature end of options.
|
---|
| 614 | Skip it like a null option,
|
---|
[3213] | 615 | then exchange with previous non-options as if it were an option,
|
---|
[53] | 616 | then skip everything else like a non-option. */
|
---|
[3213] | 617 |
|
---|
[53] | 618 | if (gos->optind != gos->argc && !strcmp (gos->argv[gos->optind], "--"))
|
---|
[3213] | 619 | {
|
---|
| 620 | gos->optind++;
|
---|
| 621 |
|
---|
| 622 | if (gos->first_nonopt != gos->last_nonopt && gos->last_nonopt != gos->optind)
|
---|
| 623 | exchange (gos, (char **) gos->argv);
|
---|
[53] | 624 | else if (gos->first_nonopt == gos->last_nonopt)
|
---|
[3213] | 625 | gos->first_nonopt = gos->optind;
|
---|
[53] | 626 | gos->last_nonopt = gos->argc;
|
---|
| 627 |
|
---|
| 628 | gos->optind = gos->argc;
|
---|
| 629 | }
|
---|
| 630 |
|
---|
[3213] | 631 | /* If we have done all the ARGV-elements, stop the scan
|
---|
[53] | 632 | and back over any non-options that we skipped and permuted. */
|
---|
| 633 |
|
---|
| 634 | if (gos->optind == gos->argc)
|
---|
[3213] | 635 | {
|
---|
| 636 | /* Set the next-arg-index to point at the non-options
|
---|
[53] | 637 | that we previously skipped, so the caller will digest them. */
|
---|
| 638 | if (gos->first_nonopt != gos->last_nonopt)
|
---|
| 639 | gos->optind = gos->first_nonopt;
|
---|
| 640 | return -1;
|
---|
| 641 | }
|
---|
| 642 |
|
---|
| 643 | /* If we have come to a non-option and did not permute it,
|
---|
| 644 | either stop the scan or describe it to the caller and pass it by. */
|
---|
[3213] | 645 |
|
---|
[53] | 646 | if (NONOPTION_P)
|
---|
[3213] | 647 | {
|
---|
[53] | 648 | if (gos->ordering == REQUIRE_ORDER)
|
---|
| 649 | return -1;
|
---|
| 650 | gos->optarg = gos->argv[gos->optind++];
|
---|
| 651 | return 1;
|
---|
| 652 | }
|
---|
| 653 |
|
---|
[3213] | 654 | /* We have found another option-ARGV-element.
|
---|
| 655 | Skip the initial punctuation. */
|
---|
[53] | 656 |
|
---|
| 657 | gos->nextchar = (gos->argv[gos->optind] + 1
|
---|
| 658 | + (longopts != NULL && gos->argv[gos->optind][1] == '-'));
|
---|
| 659 | }
|
---|
| 660 |
|
---|
| 661 | /* Decode the current option-ARGV-element. */
|
---|
| 662 |
|
---|
| 663 | /* Check whether the ARGV-element is a long option.
|
---|
| 664 |
|
---|
| 665 | If long_only and the ARGV-element has the form "-f", where f is
|
---|
| 666 | a valid short option, don't consider it an abbreviated form of
|
---|
| 667 | a long option that starts with f. Otherwise there would be no
|
---|
| 668 | way to give the -f short option.
|
---|
| 669 |
|
---|
| 670 | On the other hand, if there's a long option "fubar" and
|
---|
| 671 | the ARGV-element is "-fu", do consider that an abbreviation of
|
---|
| 672 | the long option, just like "--fu", and not "-f" with arg "u".
|
---|
| 673 |
|
---|
[3213] | 674 | This distinction seems to be the most useful approach. */
|
---|
| 675 |
|
---|
| 676 | if (longopts != NULL
|
---|
| 677 | && (gos->argv[gos->optind][1] == '-'
|
---|
| 678 | || (long_only
|
---|
| 679 | && ( gos->argv[gos->optind][2]
|
---|
| 680 | || !memchr (gos->optstring, gos->argv[gos->optind][1], gos->len_optstring) )
|
---|
[53] | 681 | )
|
---|
| 682 | )
|
---|
| 683 | )
|
---|
| 684 | {
|
---|
| 685 | char *nameend;
|
---|
| 686 | const struct option *p;
|
---|
| 687 | const struct option *pfound = NULL;
|
---|
| 688 | int exact = 0;
|
---|
| 689 | int ambig = 0;
|
---|
[3213] | 690 | int indfound = -1;
|
---|
[53] | 691 | int option_index;
|
---|
| 692 |
|
---|
| 693 | for (nameend = gos->nextchar; *nameend && *nameend != '='; nameend++)
|
---|
| 694 | /* Do nothing. */ ;
|
---|
| 695 |
|
---|
[3213] | 696 | /* Test all long options for either exact match
|
---|
[53] | 697 | or abbreviated matches. */
|
---|
[3213] | 698 | for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
---|
[53] | 699 | if (!strncmp (p->name, gos->nextchar, nameend - gos->nextchar))
|
---|
| 700 | {
|
---|
| 701 | if ((unsigned int) (nameend - gos->nextchar)
|
---|
| 702 | == (unsigned int) strlen (p->name))
|
---|
| 703 | {
|
---|
| 704 | /* Exact match found. */
|
---|
| 705 | pfound = p;
|
---|
| 706 | indfound = option_index;
|
---|
| 707 | exact = 1;
|
---|
| 708 | break;
|
---|
| 709 | }
|
---|
| 710 | else if (pfound == NULL)
|
---|
| 711 | {
|
---|
| 712 | /* First nonexact match found. */
|
---|
| 713 | pfound = p;
|
---|
| 714 | indfound = option_index;
|
---|
| 715 | }
|
---|
| 716 | else
|
---|
| 717 | /* Second or later nonexact match found. */
|
---|
| 718 | ambig = 1;
|
---|
| 719 | }
|
---|
[3213] | 720 |
|
---|
| 721 | if (ambig && !exact)
|
---|
| 722 | {
|
---|
| 723 | if (gos->opterr)
|
---|
| 724 | errx (gos->pCtx, 2, _("%s: option '%s' is ambiguous"),
|
---|
| 725 | gos->argv[0], gos->argv[gos->optind]);
|
---|
[53] | 726 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 727 | gos->optind++;
|
---|
| 728 | gos->optopt = 0;
|
---|
| 729 | return '?';
|
---|
| 730 | }
|
---|
| 731 |
|
---|
[3213] | 732 | if (pfound != NULL)
|
---|
[53] | 733 | {
|
---|
| 734 | option_index = indfound;
|
---|
| 735 | gos->optind++;
|
---|
| 736 | if (*nameend)
|
---|
| 737 | {
|
---|
[3213] | 738 | /* Don't test has_arg with >, because some C compilers don't
|
---|
[53] | 739 | allow it to be used on enums. */
|
---|
| 740 | if (pfound->has_arg)
|
---|
[3213] | 741 | gos->optarg = nameend + 1;
|
---|
[3140] | 742 | else
|
---|
[3213] | 743 | {
|
---|
[3140] | 744 | if (gos->opterr)
|
---|
[3213] | 745 | { /* bird: disambiguate */
|
---|
| 746 | if (gos->argv[gos->optind - 1][1] == '-')
|
---|
| 747 | /* --option */
|
---|
[3140] | 748 | errx (gos->pCtx, 2,
|
---|
| 749 | _("%s: option '--%s' doesn't allow an argument\n"),
|
---|
[3213] | 750 | gos->argv[0], pfound->name);
|
---|
| 751 | else
|
---|
| 752 | /* +option or -option */
|
---|
[3140] | 753 | errx (gos->pCtx, 2,
|
---|
[53] | 754 | _("%s: option '%c%s' doesn't allow an argument\n"),
|
---|
[3213] | 755 | gos->argv[0], gos->argv[gos->optind - 1][0], pfound->name);
|
---|
[53] | 756 | }
|
---|
[3213] | 757 |
|
---|
[53] | 758 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 759 |
|
---|
| 760 | gos->optopt = pfound->val;
|
---|
| 761 | return '?';
|
---|
| 762 | }
|
---|
[3213] | 763 | }
|
---|
| 764 | else if (pfound->has_arg == 1)
|
---|
[53] | 765 | {
|
---|
| 766 | if (gos->optind < gos->argc)
|
---|
[3213] | 767 | gos->optarg = gos->argv[gos->optind++];
|
---|
| 768 | else
|
---|
| 769 | {
|
---|
| 770 | if (gos->opterr)
|
---|
| 771 | errx (gos->pCtx, 2,
|
---|
| 772 | _("%s: option '%s' requires an argument\n"),
|
---|
| 773 | gos->argv[0], gos->argv[gos->optind - 1]);
|
---|
[53] | 774 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 775 | gos->optopt = pfound->val;
|
---|
[3213] | 776 | return gos->optstring[0] == ':' ? ':' : '?';
|
---|
[53] | 777 | }
|
---|
| 778 | }
|
---|
| 779 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 780 | if (longind != NULL)
|
---|
| 781 | *longind = option_index;
|
---|
| 782 | if (pfound->flag)
|
---|
| 783 | {
|
---|
| 784 | *(pfound->flag) = pfound->val;
|
---|
| 785 | return 0;
|
---|
| 786 | }
|
---|
| 787 | return pfound->val;
|
---|
| 788 | }
|
---|
| 789 |
|
---|
| 790 | /* Can't find it as a long option. If this is not getopt_long_only,
|
---|
[3213] | 791 | or the option starts with '--' or is not a valid short
|
---|
| 792 | option, then it's an error.
|
---|
[53] | 793 | Otherwise interpret it as a short option. */
|
---|
[3213] | 794 | if (!long_only || gos->argv[gos->optind][1] == '-'
|
---|
[53] | 795 | || memchr(gos->optstring, *gos->nextchar, gos->len_optstring) == NULL)
|
---|
[3213] | 796 | {
|
---|
[53] | 797 | if (gos->opterr)
|
---|
[3213] | 798 | {
|
---|
| 799 | if (gos->argv[gos->optind][1] == '-')
|
---|
[53] | 800 | /* --option */
|
---|
| 801 | errx (gos->pCtx, 2, _("%s: unrecognized option '--%s'\n"),
|
---|
[3213] | 802 | gos->argv[0], gos->nextchar);
|
---|
| 803 | else
|
---|
[53] | 804 | /* +option or -option */
|
---|
[3213] | 805 | errx (gos->pCtx, 2, _("%s: unrecognized option '%c%s'\n"),
|
---|
| 806 | gos->argv[0], gos->argv[gos->optind][0], gos->nextchar);
|
---|
| 807 | }
|
---|
[53] | 808 | gos->nextchar = (char *) "";
|
---|
| 809 | gos->optind++;
|
---|
| 810 | gos->optopt = 0;
|
---|
| 811 | return '?';
|
---|
| 812 | }
|
---|
| 813 | }
|
---|
| 814 |
|
---|
[3213] | 815 | /* Look at and handle the next short option-character. */
|
---|
| 816 |
|
---|
[53] | 817 | {
|
---|
| 818 | char c = *gos->nextchar++;
|
---|
[3213] | 819 | char *temp = (char *)memchr (gos->optstring, c, gos->len_optstring);
|
---|
| 820 |
|
---|
[53] | 821 | /* Increment `optind' when we start to process its last character. */
|
---|
| 822 | if (*gos->nextchar == '\0')
|
---|
| 823 | ++gos->optind;
|
---|
[3213] | 824 |
|
---|
[53] | 825 | if (temp == NULL || c == ':')
|
---|
[3213] | 826 | {
|
---|
[53] | 827 | if (gos->opterr)
|
---|
[3213] | 828 | {
|
---|
| 829 | if (gos->posixly_correct)
|
---|
[53] | 830 | /* 1003.2 specifies the format of this message. */
|
---|
[3213] | 831 | errx (gos->pCtx, 2, _("%s: illegal option -- %c\n"),
|
---|
| 832 | gos->argv[0], c);
|
---|
[53] | 833 | else
|
---|
[3213] | 834 | errx (gos->pCtx, 2, _("%s: invalid option -- %c\n"),
|
---|
[53] | 835 | gos->argv[0], c);
|
---|
| 836 | }
|
---|
| 837 | gos->optopt = c;
|
---|
| 838 | return '?';
|
---|
| 839 | }
|
---|
| 840 | /* Convenience. Treat POSIX -W foo same as long option --foo */
|
---|
| 841 | if (temp[0] == 'W' && temp[1] == ';')
|
---|
| 842 | {
|
---|
| 843 | char *nameend;
|
---|
| 844 | const struct option *p;
|
---|
| 845 | const struct option *pfound = NULL;
|
---|
| 846 | int exact = 0;
|
---|
| 847 | int ambig = 0;
|
---|
| 848 | int indfound = 0;
|
---|
[3213] | 849 | int option_index;
|
---|
[53] | 850 |
|
---|
[3213] | 851 | /* This is an option that requires an argument. */
|
---|
[53] | 852 | if (*gos->nextchar != '\0')
|
---|
| 853 | {
|
---|
[3213] | 854 | gos->optarg = gos->nextchar;
|
---|
[53] | 855 | /* If we end this ARGV-element by taking the rest as an arg,
|
---|
[3213] | 856 | we must advance to the next element now. */
|
---|
[53] | 857 | gos->optind++;
|
---|
[3213] | 858 | }
|
---|
[53] | 859 | else if (gos->optind == gos->argc)
|
---|
| 860 | {
|
---|
[3213] | 861 | if (gos->opterr)
|
---|
| 862 | {
|
---|
[53] | 863 | /* 1003.2 specifies the format of this message. */
|
---|
[3213] | 864 | errx (gos->pCtx, 2, _("%s: option requires an argument -- %c\n"),
|
---|
| 865 | gos->argv[0], c);
|
---|
[53] | 866 | }
|
---|
| 867 | gos->optopt = c;
|
---|
| 868 | if (gos->optstring[0] == ':')
|
---|
| 869 | c = ':';
|
---|
| 870 | else
|
---|
| 871 | c = '?';
|
---|
| 872 | return c;
|
---|
| 873 | }
|
---|
[3213] | 874 | else
|
---|
[53] | 875 | /* We already incremented `optind' once;
|
---|
| 876 | increment it again when taking next ARGV-elt as argument. */
|
---|
| 877 | gos->optarg = gos->argv[gos->optind++];
|
---|
| 878 |
|
---|
[3213] | 879 | /* optarg is now the argument, see if it's in the
|
---|
[53] | 880 | table of longopts. */
|
---|
| 881 |
|
---|
| 882 | for (gos->nextchar = nameend = gos->optarg; *nameend && *nameend != '='; nameend++)
|
---|
| 883 | /* Do nothing. */ ;
|
---|
| 884 |
|
---|
[3213] | 885 | /* Test all long options for either exact match
|
---|
[53] | 886 | or abbreviated matches. */
|
---|
[3213] | 887 | for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
---|
[53] | 888 | if (!strncmp (p->name, gos->nextchar, nameend - gos->nextchar))
|
---|
| 889 | {
|
---|
| 890 | if ((unsigned int) (nameend - gos->nextchar) == strlen (p->name))
|
---|
| 891 | {
|
---|
| 892 | /* Exact match found. */
|
---|
| 893 | pfound = p;
|
---|
| 894 | indfound = option_index;
|
---|
| 895 | exact = 1;
|
---|
| 896 | break;
|
---|
| 897 | }
|
---|
| 898 | else if (pfound == NULL)
|
---|
| 899 | {
|
---|
| 900 | /* First nonexact match found. */
|
---|
| 901 | pfound = p;
|
---|
| 902 | indfound = option_index;
|
---|
| 903 | }
|
---|
| 904 | else
|
---|
| 905 | /* Second or later nonexact match found. */
|
---|
| 906 | ambig = 1;
|
---|
[3213] | 907 | }
|
---|
| 908 | if (ambig && !exact)
|
---|
| 909 | {
|
---|
| 910 | if (gos->opterr)
|
---|
| 911 | errx (gos->pCtx, 2, _("%s: option '-W %s' is ambiguous\n"),
|
---|
[53] | 912 | gos->argv[0], gos->argv[gos->optind]);
|
---|
| 913 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 914 | gos->optind++;
|
---|
| 915 | return '?';
|
---|
| 916 | }
|
---|
| 917 | if (pfound != NULL)
|
---|
| 918 | {
|
---|
| 919 | option_index = indfound;
|
---|
| 920 | if (*nameend)
|
---|
| 921 | {
|
---|
[3213] | 922 | /* Don't test has_arg with >, because some C compilers don't
|
---|
[53] | 923 | allow it to be used on enums. */
|
---|
| 924 | if (pfound->has_arg)
|
---|
[3213] | 925 | gos->optarg = nameend + 1;
|
---|
| 926 | else
|
---|
| 927 | {
|
---|
| 928 | if (gos->opterr)
|
---|
[53] | 929 | errx (gos->pCtx, 2,
|
---|
[3213] | 930 | _("%s: option '-W %s' doesn't allow an argument\n"),
|
---|
[53] | 931 | gos->argv[0], pfound->name);
|
---|
| 932 |
|
---|
| 933 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 934 | return '?';
|
---|
| 935 | }
|
---|
[3213] | 936 | }
|
---|
| 937 | else if (pfound->has_arg == 1)
|
---|
[53] | 938 | {
|
---|
| 939 | if (gos->optind < gos->argc)
|
---|
[3213] | 940 | gos->optarg = gos->argv[gos->optind++];
|
---|
| 941 | else
|
---|
| 942 | {
|
---|
| 943 | if (gos->opterr)
|
---|
| 944 | errx (gos->pCtx, 2,
|
---|
| 945 | _("%s: option '%s' requires an argument\n"),
|
---|
[53] | 946 | gos->argv[0], gos->argv[gos->optind - 1]);
|
---|
| 947 | gos->nextchar += strlen (gos->nextchar);
|
---|
[3213] | 948 | return gos->optstring[0] == ':' ? ':' : '?';
|
---|
[53] | 949 | }
|
---|
| 950 | }
|
---|
| 951 | gos->nextchar += strlen (gos->nextchar);
|
---|
| 952 | if (longind != NULL)
|
---|
| 953 | *longind = option_index;
|
---|
| 954 | if (pfound->flag)
|
---|
| 955 | {
|
---|
| 956 | *(pfound->flag) = pfound->val;
|
---|
| 957 | return 0;
|
---|
[3213] | 958 | }
|
---|
[53] | 959 | return pfound->val;
|
---|
| 960 | }
|
---|
| 961 | gos->nextchar = NULL;
|
---|
| 962 | return 'W'; /* Let the application handle it. */
|
---|
| 963 | }
|
---|
| 964 | if (temp[1] == ':')
|
---|
| 965 | {
|
---|
[3213] | 966 | if (temp[2] == ':')
|
---|
[53] | 967 | {
|
---|
[3213] | 968 | /* This is an option that accepts an argument optionally. */
|
---|
| 969 | if (*gos->nextchar != '\0')
|
---|
[53] | 970 | {
|
---|
| 971 | gos->optarg = gos->nextchar;
|
---|
[3213] | 972 | gos->optind++;
|
---|
| 973 | }
|
---|
[53] | 974 | else
|
---|
| 975 | gos->optarg = NULL;
|
---|
| 976 | gos->nextchar = NULL;
|
---|
| 977 | }
|
---|
[3213] | 978 | else
|
---|
[53] | 979 | {
|
---|
[3213] | 980 | /* This is an option that requires an argument. */
|
---|
[53] | 981 | if (*gos->nextchar != '\0')
|
---|
| 982 | {
|
---|
[3213] | 983 | gos->optarg = gos->nextchar;
|
---|
[53] | 984 | /* If we end this ARGV-element by taking the rest as an arg,
|
---|
[3213] | 985 | we must advance to the next element now. */
|
---|
[53] | 986 | gos->optind++;
|
---|
[3213] | 987 | }
|
---|
[53] | 988 | else if (gos->optind == gos->argc)
|
---|
| 989 | {
|
---|
[3213] | 990 | if (gos->opterr)
|
---|
| 991 | {
|
---|
| 992 | /* 1003.2 specifies the format of this message. */
|
---|
[53] | 993 | errx (gos->pCtx, 2,
|
---|
[3213] | 994 | _("%s: option requires an argument -- %c\n"),
|
---|
| 995 | gos->argv[0], c);
|
---|
[53] | 996 | }
|
---|
| 997 | gos->optopt = c;
|
---|
| 998 | if (gos->optstring[0] == ':')
|
---|
| 999 | c = ':';
|
---|
| 1000 | else
|
---|
| 1001 | c = '?';
|
---|
| 1002 | }
|
---|
[3213] | 1003 | else
|
---|
| 1004 | /* We already incremented `optind' once;
|
---|
[53] | 1005 | increment it again when taking next ARGV-elt as argument. */
|
---|
| 1006 | gos->optarg = gos->argv[gos->optind++];
|
---|
| 1007 | gos->nextchar = NULL;
|
---|
| 1008 | }
|
---|
| 1009 | }
|
---|
| 1010 | return c;
|
---|
| 1011 | }
|
---|
[3213] | 1012 | }
|
---|
[53] | 1013 |
|
---|
[3213] | 1014 | int
|
---|
[53] | 1015 | getopt_r (struct getopt_state_r *gos)
|
---|
| 1016 | {
|
---|
[3213] | 1017 | return _getopt_internal_r (gos, NULL, NULL, 0);
|
---|
[53] | 1018 | }
|
---|
| 1019 |
|
---|
| 1020 | #endif /* #if 1 */ /* Not ELIDE_CODE. */
|
---|
| 1021 | |
---|
| 1022 |
|
---|
| 1023 | #ifdef TEST
|
---|
| 1024 |
|
---|
| 1025 | /* Compile with -DTEST to make an executable for use in testing
|
---|
| 1026 | the above definition of `getopt'. */
|
---|
| 1027 |
|
---|
| 1028 | int
|
---|
[3213] | 1029 | main (int argc, char **argv)
|
---|
[53] | 1030 | {
|
---|
[3213] | 1031 | int c;
|
---|
| 1032 | int digit_optind = 0;
|
---|
[53] | 1033 | struct getopt_state_r = gos;
|
---|
| 1034 |
|
---|
[3213] | 1035 | getopt_initialize_r (&gos, argc, argv, "abc:d:0123456789", NULL, NULL, NULL);
|
---|
[53] | 1036 |
|
---|
[3213] | 1037 | while (1)
|
---|
[53] | 1038 | {
|
---|
| 1039 | int this_option_optind = gos.optind ? gos.optind : 1;
|
---|
| 1040 |
|
---|
| 1041 | c = getopt_r (&gos);
|
---|
| 1042 | if (c == -1)
|
---|
| 1043 | break;
|
---|
| 1044 |
|
---|
| 1045 | switch (c)
|
---|
| 1046 | {
|
---|
| 1047 | case '0':
|
---|
| 1048 | case '1':
|
---|
| 1049 | case '2':
|
---|
| 1050 | case '3':
|
---|
| 1051 | case '4':
|
---|
| 1052 | case '5':
|
---|
| 1053 | case '6':
|
---|
| 1054 | case '7':
|
---|
| 1055 | case '8':
|
---|
| 1056 | case '9':
|
---|
| 1057 | if (digit_optind != 0 && digit_optind != this_option_optind)
|
---|
| 1058 | printf ("digits occur in two different argv-elements.\n");
|
---|
| 1059 | digit_optind = this_option_optind;
|
---|
| 1060 | printf ("option %c\n", c);
|
---|
| 1061 | break;
|
---|
| 1062 |
|
---|
| 1063 | case 'a':
|
---|
| 1064 | printf ("option a\n");
|
---|
| 1065 | break;
|
---|
| 1066 |
|
---|
| 1067 | case 'b':
|
---|
[3140] | 1068 | printf ("option b\n");
|
---|
[53] | 1069 | break;
|
---|
| 1070 |
|
---|
| 1071 | case 'c':
|
---|
| 1072 | printf ("option c with value '%s'\n", optarg);
|
---|
| 1073 | break;
|
---|
| 1074 |
|
---|
| 1075 | case '?':
|
---|
| 1076 | break;
|
---|
| 1077 |
|
---|
| 1078 | default:
|
---|
[3213] | 1079 | printf ("?? getopt returned character code 0%o ??\n", c);
|
---|
[53] | 1080 | }
|
---|
| 1081 | }
|
---|
[3213] | 1082 |
|
---|
| 1083 | if (gos.optind < argc)
|
---|
[53] | 1084 | {
|
---|
| 1085 | printf ("non-option ARGV-elements: ");
|
---|
| 1086 | while (gos.optind < argc)
|
---|
| 1087 | printf ("%s ", argv[gos.optind++]);
|
---|
| 1088 | printf ("\n");
|
---|
| 1089 | }
|
---|
| 1090 |
|
---|
| 1091 | exit (0);
|
---|
| 1092 | }
|
---|
| 1093 |
|
---|
| 1094 | #endif /* TEST */
|
---|