[35aab3] | 1 | /**************************************** |
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| 2 | * Computer Algebra System SINGULAR * |
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| 3 | ****************************************/ |
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| 4 | |
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| 5 | /* Getopt for GNU. |
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| 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 roland@gnu.ai.mit.edu |
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| 8 | before changing it! |
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| 9 | |
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| 10 | Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94 |
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| 11 | Free Software Foundation, Inc. |
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| 12 | |
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| 13 | This program is free software; you can redistribute it and/or modify it |
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| 14 | under the terms of the GNU General Public License as published by the |
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| 15 | Free Software Foundation; either version 2, or (at your option) any |
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| 16 | later version. |
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| 17 | |
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| 18 | This program is distributed in the hope that it will be useful, |
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| 19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | GNU General Public License for more details. |
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| 22 | |
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| 23 | You should have received a copy of the GNU General Public License |
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| 24 | along with this program; if not, write to the Free Software |
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| 25 | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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| 26 | |
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| 27 | /* |
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| 28 | obachman 9/99: adapted to Singular by |
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| 29 | * adding prefix fe_ to global variables |
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| 30 | * extended fe_option structure |
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| 31 | */ |
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| 32 | |
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| 33 | |
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[16f511] | 34 | #ifdef HAVE_CONFIG_H |
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[ba5e9e] | 35 | #include "singularconfig.h" |
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[16f511] | 36 | #endif /* HAVE_CONFIG_H */ |
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[599326] | 37 | #include <kernel/mod2.h> |
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[35aab3] | 38 | |
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| 39 | #ifndef __STDC__ |
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| 40 | # ifndef const |
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| 41 | # define const |
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| 42 | # endif |
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| 43 | #endif |
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| 44 | |
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| 45 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */ |
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| 46 | #ifndef _NO_PROTO |
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| 47 | #define _NO_PROTO |
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| 48 | #endif |
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| 49 | |
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| 50 | #include <stdio.h> |
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| 51 | /* #include "tailor.h" */ |
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| 52 | |
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| 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 | /* This needs to come after some library #include |
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| 62 | to get __GNU_LIBRARY__ defined. */ |
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| 63 | #ifdef __GNU_LIBRARY__ |
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| 64 | /* Don't include stdlib.h for non-GNU C libraries because some of them |
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| 65 | contain conflicting prototypes for getopt. */ |
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| 66 | #include <stdlib.h> |
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| 67 | #endif /* GNU C library. */ |
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| 68 | |
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| 69 | /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a |
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| 70 | long-named option. Because this is not POSIX.2 compliant, it is |
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| 71 | being phased out. */ |
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| 72 | /* #define GETOPT_COMPAT */ |
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| 73 | |
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| 74 | /* This version of `getopt' appears to the caller like standard Unix `getopt' |
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| 75 | but it behaves differently for the user, since it allows the user |
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| 76 | to intersperse the options with the other arguments. |
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| 77 | |
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| 78 | As `getopt' works, it permutes the elements of ARGV so that, |
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| 79 | when it is done, all the options precede everything else. Thus |
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| 80 | all application programs are extended to handle flexible argument order. |
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| 81 | |
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| 82 | Setting the environment variable POSIXLY_CORRECT disables permutation. |
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| 83 | Then the behavior is completely standard. |
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| 84 | |
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| 85 | GNU application programs can use a third alternative mode in which |
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| 86 | they can distinguish the relative order of options and other arguments. */ |
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| 87 | |
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[bd795d] | 88 | #include <Singular/fegetopt.h> |
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[35aab3] | 89 | |
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| 90 | /* For communication from `getopt' to the caller. |
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| 91 | When `getopt' finds an option that takes an argument, |
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| 92 | the argument value is returned here. |
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| 93 | Also, when `ordering' is RETURN_IN_ORDER, |
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| 94 | each non-option ARGV-element is returned here. */ |
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| 95 | |
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| 96 | char *fe_optarg = 0; |
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| 97 | |
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| 98 | /* Index in ARGV of the next element to be scanned. |
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| 99 | This is used for communication to and from the caller |
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| 100 | and for communication between successive calls to `getopt'. |
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| 101 | |
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| 102 | On entry to `getopt', zero means this is the first call; initialize. |
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| 103 | |
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| 104 | When `getopt' returns EOF, this is the index of the first of the |
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| 105 | non-option elements that the caller should itself scan. |
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| 106 | |
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| 107 | Otherwise, `fe_optind' communicates from one call to the next |
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| 108 | how much of ARGV has been scanned so far. */ |
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| 109 | |
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| 110 | /* XXX 1003.2 says this must be 1 before any call. */ |
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| 111 | int fe_optind = 0; |
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| 112 | |
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| 113 | /* The next char to be scanned in the option-element |
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| 114 | in which the last option character we returned was found. |
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| 115 | This allows us to pick up the scan where we left off. |
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| 116 | |
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| 117 | If this is zero, or a null string, it means resume the scan |
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| 118 | by advancing to the next ARGV-element. */ |
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| 119 | |
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| 120 | static char *nextchar; |
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| 121 | |
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| 122 | /* Callers store zero here to inhibit the error message |
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| 123 | for unrecognized options. */ |
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| 124 | |
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| 125 | int fe_opterr = 1; |
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| 126 | |
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| 127 | /* Set to an option character which was unrecognized. |
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| 128 | This must be initialized on some systems to avoid linking in the |
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| 129 | system's own getopt implementation. */ |
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| 130 | |
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| 131 | #define BAD_OPTION '\0' |
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| 132 | int fe_optopt = BAD_OPTION; |
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| 133 | |
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| 134 | /* Describe how to deal with options that follow non-option ARGV-elements. |
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| 135 | |
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| 136 | If the caller did not specify anything, |
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| 137 | the default is REQUIRE_ORDER if the environment variable |
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| 138 | POSIXLY_CORRECT is defined, PERMUTE otherwise. |
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| 139 | |
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| 140 | REQUIRE_ORDER means don't recognize them as options; |
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| 141 | stop option processing when the first non-option is seen. |
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| 142 | This is what Unix does. |
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| 143 | This mode of operation is selected by either setting the environment |
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| 144 | variable POSIXLY_CORRECT, or using `+' as the first character |
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| 145 | of the list of option characters. |
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| 146 | |
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| 147 | PERMUTE is the default. We permute the contents of ARGV as we scan, |
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| 148 | so that eventually all the non-options are at the end. This allows options |
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| 149 | to be given in any order, even with programs that were not written to |
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| 150 | expect this. |
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| 151 | |
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| 152 | RETURN_IN_ORDER is an option available to programs that were written |
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| 153 | to expect options and other ARGV-elements in any order and that care about |
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| 154 | the ordering of the two. We describe each non-option ARGV-element |
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| 155 | as if it were the argument of an option with character code 1. |
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| 156 | Using `-' as the first character of the list of option characters |
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| 157 | selects this mode of operation. |
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| 158 | |
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| 159 | The special argument `--' forces an end of option-scanning regardless |
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| 160 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
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| 161 | `--' can cause `getopt' to return EOF with `fe_optind' != ARGC. */ |
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| 162 | |
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| 163 | static enum |
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| 164 | { |
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| 165 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
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| 166 | } ordering; |
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| 167 | |
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| 168 | #ifdef __GNU_LIBRARY__ |
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| 169 | /* We want to avoid inclusion of string.h with non-GNU libraries |
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| 170 | because there are many ways it can cause trouble. |
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| 171 | On some systems, it contains special magic macros that don't work |
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| 172 | in GCC. */ |
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| 173 | #include <string.h> |
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| 174 | #define my_index strchr |
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| 175 | #define my_strlen strlen |
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| 176 | #else |
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| 177 | |
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| 178 | /* Avoid depending on library functions or files |
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| 179 | whose names are inconsistent. */ |
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| 180 | |
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| 181 | #if __STDC__ || defined(PROTO) |
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| 182 | extern char *getenv(const char *name); |
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| 183 | extern int strcmp (const char *s1, const char *s2); |
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| 184 | /*extern int strncmp(const char *s1, const char *s2, int n);*/ |
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| 185 | |
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| 186 | static int my_strlen(const char *s); |
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[08c2d6] | 187 | static const char *my_index (const char *str, int chr); |
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[35aab3] | 188 | #else |
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| 189 | extern char *getenv (); |
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| 190 | #endif |
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| 191 | |
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| 192 | static int my_strlen (const char *str) |
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| 193 | { |
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| 194 | int n = 0; |
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| 195 | while (*str++) |
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| 196 | n++; |
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| 197 | return n; |
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| 198 | } |
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| 199 | |
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[08c2d6] | 200 | static const char * my_index (const char *str, int chr) |
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[35aab3] | 201 | { |
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| 202 | while (*str) |
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| 203 | { |
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| 204 | if (*str == chr) |
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[08c2d6] | 205 | return (const char *) str; |
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[35aab3] | 206 | str++; |
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| 207 | } |
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| 208 | return 0; |
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| 209 | } |
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| 210 | |
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| 211 | #endif /* GNU C library. */ |
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| 212 | |
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| 213 | /* Handle permutation of arguments. */ |
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| 214 | |
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| 215 | /* Describe the part of ARGV that contains non-options that have |
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| 216 | been skipped. `first_nonopt' is the index in ARGV of the first of them; |
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| 217 | `last_nonopt' is the index after the last of them. */ |
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| 218 | |
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| 219 | static int first_nonopt; |
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| 220 | static int last_nonopt; |
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| 221 | |
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| 222 | /* Exchange two adjacent subsequences of ARGV. |
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| 223 | One subsequence is elements [first_nonopt,last_nonopt) |
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| 224 | which contains all the non-options that have been skipped so far. |
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| 225 | The other is elements [last_nonopt,fe_optind), which contains all |
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| 226 | the options processed since those non-options were skipped. |
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| 227 | |
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| 228 | `first_nonopt' and `last_nonopt' are relocated so that they describe |
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| 229 | the new indices of the non-options in ARGV after they are moved. |
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| 230 | |
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| 231 | To perform the swap, we first reverse the order of all elements. So |
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| 232 | all options now come before all non options, but they are in the |
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| 233 | wrong order. So we put back the options and non options in original |
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| 234 | order by reversing them again. For example: |
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| 235 | original input: a b c -x -y |
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| 236 | reverse all: -y -x c b a |
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| 237 | reverse options: -x -y c b a |
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| 238 | reverse non options: -x -y a b c |
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| 239 | */ |
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| 240 | |
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| 241 | #if __STDC__ || defined(PROTO) |
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| 242 | static void exchange (char **argv); |
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| 243 | #endif |
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| 244 | |
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| 245 | static void exchange (char **argv) |
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| 246 | { |
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| 247 | char *temp, **first, **last; |
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| 248 | |
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| 249 | /* Reverse all the elements [first_nonopt, fe_optind) */ |
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| 250 | first = &argv[first_nonopt]; |
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| 251 | last = &argv[fe_optind-1]; |
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| 252 | while (first < last) { |
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| 253 | temp = *first; *first = *last; *last = temp; first++; last--; |
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| 254 | } |
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| 255 | /* Put back the options in order */ |
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| 256 | first = &argv[first_nonopt]; |
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| 257 | first_nonopt += (fe_optind - last_nonopt); |
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| 258 | last = &argv[first_nonopt - 1]; |
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| 259 | while (first < last) { |
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| 260 | temp = *first; *first = *last; *last = temp; first++; last--; |
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| 261 | } |
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| 262 | |
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| 263 | /* Put back the non options in order */ |
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| 264 | first = &argv[first_nonopt]; |
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| 265 | last_nonopt = fe_optind; |
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| 266 | last = &argv[last_nonopt-1]; |
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| 267 | while (first < last) { |
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| 268 | temp = *first; *first = *last; *last = temp; first++; last--; |
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| 269 | } |
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| 270 | } |
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| 271 | |
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| 272 | /* Scan elements of ARGV (whose length is ARGC) for option characters |
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| 273 | given in OPTSTRING. |
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| 274 | |
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| 275 | If an element of ARGV starts with '-', and is not exactly "-" or "--", |
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| 276 | then it is an option element. The characters of this element |
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| 277 | (aside from the initial '-') are option characters. If `getopt' |
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| 278 | is called repeatedly, it returns successively each of the option characters |
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| 279 | from each of the option elements. |
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| 280 | |
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| 281 | If `getopt' finds another option character, it returns that character, |
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| 282 | updating `fe_optind' and `nextchar' so that the next call to `getopt' can |
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| 283 | resume the scan with the following option character or ARGV-element. |
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| 284 | |
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| 285 | If there are no more option characters, `getopt' returns `EOF'. |
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| 286 | Then `fe_optind' is the index in ARGV of the first ARGV-element |
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| 287 | that is not an option. (The ARGV-elements have been permuted |
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| 288 | so that those that are not options now come last.) |
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| 289 | |
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| 290 | OPTSTRING is a string containing the legitimate option characters. |
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| 291 | If an option character is seen that is not listed in OPTSTRING, |
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| 292 | return BAD_OPTION after printing an error message. If you set `fe_opterr' to |
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| 293 | zero, the error message is suppressed but we still return BAD_OPTION. |
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| 294 | |
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| 295 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
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| 296 | so the following text in the same ARGV-element, or the text of the following |
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| 297 | ARGV-element, is returned in `fe_optarg'. Two colons mean an option that |
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| 298 | wants an optional arg; if there is text in the current ARGV-element, |
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| 299 | it is returned in `fe_optarg', otherwise `fe_optarg' is set to zero. |
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| 300 | |
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| 301 | If OPTSTRING starts with `-' or `+', it requests different methods of |
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| 302 | handling the non-option ARGV-elements. |
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| 303 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
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| 304 | |
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| 305 | Long-named options begin with `--' instead of `-'. |
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| 306 | Their names may be abbreviated as long as the abbreviation is unique |
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| 307 | or is an exact match for some defined option. If they have an |
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| 308 | argument, it follows the option name in the same ARGV-element, separated |
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| 309 | from the option name by a `=', or else the in next ARGV-element. |
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| 310 | When `getopt' finds a long-named option, it returns |
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| 311 | the value of the option's `val' field. |
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| 312 | |
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| 313 | The elements of ARGV aren't really const, because we permute them. |
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| 314 | But we pretend they're const in the prototype to be compatible |
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| 315 | with other systems. |
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| 316 | |
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| 317 | LONGOPTS is a vector of `struct fe_option' terminated by an |
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| 318 | element containing a name which is zero. |
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| 319 | |
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| 320 | LONGIND returns the index in LONGOPT of the long-named option found. |
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| 321 | It is only valid when a long-named option has been found by the most |
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| 322 | recent call. |
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| 323 | |
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| 324 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
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| 325 | long-named options. */ |
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| 326 | |
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| 327 | int _fe_getopt_internal ( |
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| 328 | int argc, |
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| 329 | char *const *argv, |
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| 330 | const char *optstring, |
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| 331 | const struct fe_option *longopts, |
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| 332 | int *longind, |
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| 333 | int long_only) |
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| 334 | { |
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| 335 | int option_index; |
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| 336 | |
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| 337 | fe_optarg = 0; |
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| 338 | |
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| 339 | /* Initialize the internal data when the first call is made. |
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| 340 | Start processing options with ARGV-element 1 (since ARGV-element 0 |
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| 341 | is the program name); the sequence of previously skipped |
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| 342 | non-option ARGV-elements is empty. */ |
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| 343 | |
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| 344 | if (fe_optind == 0) |
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| 345 | { |
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| 346 | first_nonopt = last_nonopt = fe_optind = 1; |
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| 347 | |
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| 348 | nextchar = NULL; |
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| 349 | |
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| 350 | /* Determine how to handle the ordering of options and nonoptions. */ |
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| 351 | |
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| 352 | if (optstring[0] == '-') |
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| 353 | { |
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| 354 | ordering = RETURN_IN_ORDER; |
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| 355 | ++optstring; |
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| 356 | } |
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| 357 | else if (optstring[0] == '+') |
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| 358 | { |
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| 359 | ordering = REQUIRE_ORDER; |
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| 360 | ++optstring; |
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| 361 | } |
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| 362 | else if (getenv ("POSIXLY_CORRECT") != NULL) |
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| 363 | ordering = REQUIRE_ORDER; |
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| 364 | else |
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| 365 | ordering = PERMUTE; |
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| 366 | } |
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| 367 | |
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| 368 | if (nextchar == NULL || *nextchar == '\0') |
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| 369 | { |
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| 370 | if (ordering == PERMUTE) |
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| 371 | { |
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| 372 | /* If we have just processed some options following some non-options, |
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| 373 | exchange them so that the options come first. */ |
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| 374 | |
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| 375 | if (first_nonopt != last_nonopt && last_nonopt != fe_optind) |
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| 376 | exchange ((char **) argv); |
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| 377 | else if (last_nonopt != fe_optind) |
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| 378 | first_nonopt = fe_optind; |
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| 379 | |
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| 380 | /* Now skip any additional non-options |
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| 381 | and extend the range of non-options previously skipped. */ |
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| 382 | |
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| 383 | while (fe_optind < argc |
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| 384 | && (argv[fe_optind][0] != '-' || argv[fe_optind][1] == '\0') |
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| 385 | #ifdef GETOPT_COMPAT |
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| 386 | && (longopts == NULL |
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| 387 | || argv[fe_optind][0] != '+' || argv[fe_optind][1] == '\0') |
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| 388 | #endif /* GETOPT_COMPAT */ |
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| 389 | ) |
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| 390 | fe_optind++; |
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| 391 | last_nonopt = fe_optind; |
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| 392 | } |
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| 393 | |
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| 394 | /* Special ARGV-element `--' means premature end of options. |
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| 395 | Skip it like a null option, |
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| 396 | then exchange with previous non-options as if it were an option, |
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| 397 | then skip everything else like a non-option. */ |
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| 398 | |
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| 399 | if (fe_optind != argc && !strcmp (argv[fe_optind], "--")) |
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| 400 | { |
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| 401 | fe_optind++; |
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| 402 | |
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| 403 | if (first_nonopt != last_nonopt && last_nonopt != fe_optind) |
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| 404 | exchange ((char **) argv); |
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| 405 | else if (first_nonopt == last_nonopt) |
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| 406 | first_nonopt = fe_optind; |
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| 407 | last_nonopt = argc; |
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| 408 | |
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| 409 | fe_optind = argc; |
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| 410 | } |
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| 411 | |
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| 412 | /* If we have done all the ARGV-elements, stop the scan |
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| 413 | and back over any non-options that we skipped and permuted. */ |
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| 414 | |
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| 415 | if (fe_optind == argc) |
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| 416 | { |
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| 417 | /* Set the next-arg-index to point at the non-options |
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| 418 | that we previously skipped, so the caller will digest them. */ |
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| 419 | if (first_nonopt != last_nonopt) |
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| 420 | fe_optind = first_nonopt; |
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| 421 | return EOF; |
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| 422 | } |
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| 423 | |
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| 424 | /* If we have come to a non-option and did not permute it, |
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| 425 | either stop the scan or describe it to the caller and pass it by. */ |
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| 426 | |
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| 427 | if ((argv[fe_optind][0] != '-' || argv[fe_optind][1] == '\0') |
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| 428 | #ifdef GETOPT_COMPAT |
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| 429 | && (longopts == NULL |
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| 430 | || argv[fe_optind][0] != '+' || argv[fe_optind][1] == '\0') |
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| 431 | #endif /* GETOPT_COMPAT */ |
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| 432 | ) |
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| 433 | { |
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| 434 | if (ordering == REQUIRE_ORDER) |
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| 435 | return EOF; |
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| 436 | fe_optarg = argv[fe_optind++]; |
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| 437 | return 1; |
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| 438 | } |
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| 439 | |
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| 440 | /* We have found another option-ARGV-element. |
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| 441 | Start decoding its characters. */ |
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| 442 | |
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| 443 | nextchar = (argv[fe_optind] + 1 |
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| 444 | + (longopts != NULL && argv[fe_optind][1] == '-')); |
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| 445 | } |
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| 446 | |
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| 447 | if (longopts != NULL |
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| 448 | && ((argv[fe_optind][0] == '-' |
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| 449 | && (argv[fe_optind][1] == '-' || long_only)) |
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| 450 | #ifdef GETOPT_COMPAT |
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| 451 | || argv[fe_optind][0] == '+' |
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| 452 | #endif /* GETOPT_COMPAT */ |
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| 453 | )) |
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| 454 | { |
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| 455 | const struct fe_option *p; |
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| 456 | char *s = nextchar; |
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| 457 | int exact = 0; |
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| 458 | int ambig = 0; |
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| 459 | const struct fe_option *pfound = NULL; |
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| 460 | int indfound = 0; |
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| 461 | |
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| 462 | while (*s && *s != '=') |
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| 463 | s++; |
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| 464 | |
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| 465 | /* Test all options for either exact match or abbreviated matches. */ |
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| 466 | for (p = longopts, option_index = 0; p->name; |
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| 467 | p++, option_index++) |
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| 468 | if (!strncmp (p->name, nextchar, s - nextchar)) |
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| 469 | { |
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| 470 | if (s - nextchar == my_strlen (p->name)) |
---|
| 471 | { |
---|
| 472 | /* Exact match found. */ |
---|
| 473 | pfound = p; |
---|
| 474 | indfound = option_index; |
---|
| 475 | exact = 1; |
---|
| 476 | break; |
---|
| 477 | } |
---|
| 478 | else if (pfound == NULL) |
---|
| 479 | { |
---|
| 480 | /* First nonexact match found. */ |
---|
| 481 | pfound = p; |
---|
| 482 | indfound = option_index; |
---|
| 483 | } |
---|
| 484 | else |
---|
| 485 | /* Second nonexact match found. */ |
---|
| 486 | ambig = 1; |
---|
| 487 | } |
---|
| 488 | |
---|
| 489 | if (ambig && !exact) |
---|
| 490 | { |
---|
| 491 | if (fe_opterr) |
---|
| 492 | fprintf (stderr, "%s: option `%s' is ambiguous\n", |
---|
| 493 | argv[0], argv[fe_optind]); |
---|
| 494 | nextchar += my_strlen (nextchar); |
---|
| 495 | fe_optind++; |
---|
| 496 | return BAD_OPTION; |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | if (pfound != NULL) |
---|
| 500 | { |
---|
| 501 | option_index = indfound; |
---|
| 502 | fe_optind++; |
---|
| 503 | if (*s) |
---|
| 504 | { |
---|
| 505 | /* Don't test has_arg with >, because some C compilers don't |
---|
| 506 | allow it to be used on enums. */ |
---|
| 507 | if (pfound->has_arg) |
---|
| 508 | fe_optarg = s + 1; |
---|
| 509 | else |
---|
| 510 | { |
---|
| 511 | if (fe_opterr) |
---|
| 512 | { |
---|
| 513 | if (argv[fe_optind - 1][1] == '-') |
---|
| 514 | /* --option */ |
---|
| 515 | fprintf (stderr, |
---|
| 516 | "%s: option `--%s' doesn't allow an argument\n", |
---|
| 517 | argv[0], pfound->name); |
---|
| 518 | else |
---|
| 519 | /* +option or -option */ |
---|
| 520 | fprintf (stderr, |
---|
| 521 | "%s: option `%c%s' doesn't allow an argument\n", |
---|
| 522 | argv[0], argv[fe_optind - 1][0], pfound->name); |
---|
| 523 | } |
---|
| 524 | nextchar += my_strlen (nextchar); |
---|
| 525 | return BAD_OPTION; |
---|
| 526 | } |
---|
| 527 | } |
---|
| 528 | else if (pfound->has_arg == 1) |
---|
| 529 | { |
---|
| 530 | if (fe_optind < argc) |
---|
| 531 | fe_optarg = argv[fe_optind++]; |
---|
| 532 | else |
---|
| 533 | { |
---|
| 534 | if (fe_opterr) |
---|
| 535 | fprintf (stderr, "%s: option `%s' requires an argument\n", |
---|
| 536 | argv[0], argv[fe_optind - 1]); |
---|
| 537 | nextchar += my_strlen (nextchar); |
---|
| 538 | return optstring[0] == ':' ? ':' : BAD_OPTION; |
---|
| 539 | } |
---|
| 540 | } |
---|
| 541 | nextchar += my_strlen (nextchar); |
---|
| 542 | if (longind != NULL) |
---|
| 543 | *longind = option_index; |
---|
| 544 | return pfound->val; |
---|
| 545 | } |
---|
| 546 | /* Can't find it as a long option. If this is not getopt_long_only, |
---|
| 547 | or the option starts with '--' or is not a valid short |
---|
| 548 | option, then it's an error. |
---|
| 549 | Otherwise interpret it as a short option. */ |
---|
| 550 | if (!long_only || argv[fe_optind][1] == '-' |
---|
| 551 | #ifdef GETOPT_COMPAT |
---|
| 552 | || argv[fe_optind][0] == '+' |
---|
| 553 | #endif /* GETOPT_COMPAT */ |
---|
| 554 | || my_index (optstring, *nextchar) == NULL) |
---|
| 555 | { |
---|
| 556 | if (fe_opterr) |
---|
| 557 | { |
---|
| 558 | if (argv[fe_optind][1] == '-') |
---|
| 559 | /* --option */ |
---|
| 560 | fprintf (stderr, "%s: unrecognized option `--%s'\n", |
---|
| 561 | argv[0], nextchar); |
---|
| 562 | else |
---|
| 563 | /* +option or -option */ |
---|
| 564 | fprintf (stderr, "%s: unrecognized option `%c%s'\n", |
---|
| 565 | argv[0], argv[fe_optind][0], nextchar); |
---|
| 566 | } |
---|
| 567 | nextchar = (char *) ""; |
---|
| 568 | fe_optind++; |
---|
| 569 | return BAD_OPTION; |
---|
| 570 | } |
---|
| 571 | } |
---|
| 572 | |
---|
| 573 | /* Look at and handle the next option-character. */ |
---|
| 574 | |
---|
| 575 | { |
---|
| 576 | char c = *nextchar++; |
---|
[85edb3] | 577 | const char *temp = my_index (optstring, c); |
---|
[35aab3] | 578 | |
---|
| 579 | /* Increment `fe_optind' when we start to process its last character. */ |
---|
| 580 | if (*nextchar == '\0') |
---|
| 581 | ++fe_optind; |
---|
| 582 | |
---|
| 583 | if (temp == NULL || c == ':') |
---|
| 584 | { |
---|
| 585 | if (fe_opterr) |
---|
| 586 | { |
---|
| 587 | #if 0 |
---|
| 588 | if (c < 040 || c >= 0177) |
---|
| 589 | fprintf (stderr, "%s: unrecognized option, character code 0%o\n", |
---|
| 590 | argv[0], c); |
---|
| 591 | else |
---|
| 592 | fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c); |
---|
| 593 | #else |
---|
| 594 | /* 1003.2 specifies the format of this message. */ |
---|
| 595 | fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); |
---|
| 596 | #endif |
---|
| 597 | } |
---|
| 598 | fe_optopt = c; |
---|
| 599 | return BAD_OPTION; |
---|
| 600 | } |
---|
| 601 | if (temp[1] == ':') |
---|
| 602 | { |
---|
| 603 | if (temp[2] == ':') |
---|
| 604 | { |
---|
| 605 | /* This is an option that accepts an argument optionally. */ |
---|
| 606 | if (*nextchar != '\0') |
---|
| 607 | { |
---|
| 608 | fe_optarg = nextchar; |
---|
| 609 | fe_optind++; |
---|
| 610 | } |
---|
| 611 | else |
---|
| 612 | fe_optarg = 0; |
---|
| 613 | nextchar = NULL; |
---|
| 614 | } |
---|
| 615 | else |
---|
| 616 | { |
---|
| 617 | /* This is an option that requires an argument. */ |
---|
| 618 | if (*nextchar != '\0') |
---|
| 619 | { |
---|
| 620 | fe_optarg = nextchar; |
---|
| 621 | /* If we end this ARGV-element by taking the rest as an arg, |
---|
| 622 | we must advance to the next element now. */ |
---|
| 623 | fe_optind++; |
---|
| 624 | } |
---|
| 625 | else if (fe_optind == argc) |
---|
| 626 | { |
---|
| 627 | if (fe_opterr) |
---|
| 628 | { |
---|
| 629 | #if 0 |
---|
| 630 | fprintf (stderr, "%s: option `-%c' requires an argument\n", |
---|
| 631 | argv[0], c); |
---|
| 632 | #else |
---|
| 633 | /* 1003.2 specifies the format of this message. */ |
---|
| 634 | fprintf (stderr, "%s: option requires an argument -- %c\n", |
---|
| 635 | argv[0], c); |
---|
| 636 | #endif |
---|
| 637 | } |
---|
| 638 | fe_optopt = c; |
---|
| 639 | if (optstring[0] == ':') |
---|
| 640 | c = ':'; |
---|
| 641 | else |
---|
| 642 | c = BAD_OPTION; |
---|
| 643 | } |
---|
| 644 | else |
---|
| 645 | /* We already incremented `fe_optind' once; |
---|
| 646 | increment it again when taking next ARGV-elt as argument. */ |
---|
| 647 | fe_optarg = argv[fe_optind++]; |
---|
| 648 | nextchar = NULL; |
---|
| 649 | } |
---|
| 650 | } |
---|
| 651 | return c; |
---|
| 652 | } |
---|
| 653 | } |
---|
| 654 | |
---|
| 655 | int fe_getopt ( |
---|
| 656 | int argc, |
---|
| 657 | char *const *argv, |
---|
| 658 | const char *optstring) |
---|
| 659 | { |
---|
| 660 | return _fe_getopt_internal (argc, argv, optstring, |
---|
| 661 | (const struct fe_option *) 0, |
---|
| 662 | (int *) 0, |
---|
| 663 | 0); |
---|
| 664 | } |
---|
| 665 | |
---|
| 666 | int fe_getopt_long ( |
---|
| 667 | int argc, |
---|
| 668 | char *const *argv, |
---|
| 669 | const char *options, |
---|
| 670 | const struct fe_option *long_options, |
---|
| 671 | int *opt_index) |
---|
| 672 | { |
---|
| 673 | return _fe_getopt_internal (argc, argv, options, long_options, opt_index, 0); |
---|
| 674 | } |
---|
| 675 | |
---|
| 676 | int fe_getopt_long_only ( |
---|
| 677 | int argc, |
---|
| 678 | char *const *argv, |
---|
| 679 | const char *options, |
---|
| 680 | const struct fe_option *long_options, |
---|
| 681 | int *opt_index) |
---|
| 682 | { |
---|
| 683 | return _fe_getopt_internal (argc, argv, options, long_options, opt_index, 1); |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | #ifdef TEST_GETOPT |
---|
| 687 | |
---|
| 688 | /* Compile with -DTEST_GETOPT to make an executable for use in testing |
---|
| 689 | the above definition of `getopt'. */ |
---|
| 690 | |
---|
| 691 | int main (int argc, char **argv) |
---|
| 692 | { |
---|
| 693 | int c; |
---|
| 694 | int digit_optind = 0; |
---|
| 695 | |
---|
| 696 | while (1) |
---|
| 697 | { |
---|
| 698 | int this_option_optind = optind ? optind : 1; |
---|
| 699 | |
---|
| 700 | c = fe_getopt (argc, argv, "abc:d:0123456789"); |
---|
| 701 | if (c == EOF) |
---|
| 702 | break; |
---|
| 703 | |
---|
| 704 | switch (c) |
---|
| 705 | { |
---|
| 706 | case '0': |
---|
| 707 | case '1': |
---|
| 708 | case '2': |
---|
| 709 | case '3': |
---|
| 710 | case '4': |
---|
| 711 | case '5': |
---|
| 712 | case '6': |
---|
| 713 | case '7': |
---|
| 714 | case '8': |
---|
| 715 | case '9': |
---|
| 716 | if (digit_optind != 0 && digit_optind != this_option_optind) |
---|
| 717 | printf ("digits occur in two different argv-elements.\n"); |
---|
| 718 | digit_optind = this_option_optind; |
---|
| 719 | printf ("option %c\n", c); |
---|
| 720 | break; |
---|
| 721 | |
---|
| 722 | case 'a': |
---|
| 723 | printf ("option a\n"); |
---|
| 724 | break; |
---|
| 725 | |
---|
| 726 | case 'b': |
---|
| 727 | printf ("option b\n"); |
---|
| 728 | break; |
---|
| 729 | |
---|
| 730 | case 'c': |
---|
| 731 | printf ("option c with value `%s'\n", fe_optarg); |
---|
| 732 | break; |
---|
| 733 | |
---|
| 734 | case BAD_OPTION: |
---|
| 735 | break; |
---|
| 736 | |
---|
| 737 | default: |
---|
| 738 | printf ("?? fe_getopt returned character code 0%o ??\n", c); |
---|
| 739 | } |
---|
| 740 | } |
---|
| 741 | |
---|
| 742 | if (fe_optind < argc) |
---|
| 743 | { |
---|
| 744 | printf ("non-option ARGV-elements: "); |
---|
| 745 | while (fe_optind < argc) |
---|
| 746 | printf ("%s ", argv[fe_optind++]); |
---|
| 747 | printf ("\n"); |
---|
| 748 | } |
---|
| 749 | |
---|
| 750 | exit (0); |
---|
| 751 | } |
---|
| 752 | |
---|
| 753 | #endif /* TEST_GETOPT */ |
---|