Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 3 | * universal getopt32 implementation for busybox |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 4 | * |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 5 | * Copyright (C) 2003-2005 Vladimir Oleynik <dzo@simtreas.ru> |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 6 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 10 | #include <getopt.h> |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 11 | #include "libbb.h" |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 12 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 13 | /* Documentation |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 14 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 15 | uint32_t |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 16 | getopt32(char **argv, const char *applet_opts, ...) |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 17 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 18 | The command line options must be declared in const char |
| 19 | *applet_opts as a string of chars, for example: |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 20 | |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 21 | flags = getopt32(argv, "rnug"); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 22 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 23 | If one of the given options is found, a flag value is added to |
| 24 | the return value (an unsigned long). |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 25 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 26 | The flag value is determined by the position of the char in |
| 27 | applet_opts string. For example, in the above case: |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 28 | |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 29 | flags = getopt32(argv, "rnug"); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 30 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 31 | "r" will add 1 (bit 0) |
| 32 | "n" will add 2 (bit 1) |
Denis Vlasenko | ab8c937 | 2007-09-28 22:13:55 +0000 | [diff] [blame] | 33 | "u" will add 4 (bit 2) |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 34 | "g" will add 8 (bit 3) |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 35 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 36 | and so on. You can also look at the return value as a bit |
| 37 | field and each option sets one bit. |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 38 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 39 | On exit, global variable optind is set so that if you |
| 40 | will do argc -= optind; argv += optind; then |
| 41 | argc will be equal to number of remaining non-option |
| 42 | arguments, first one would be in argv[0], next in argv[1] and so on |
| 43 | (options and their parameters will be moved into argv[] |
| 44 | positions prior to argv[optind]). |
Denis Vlasenko | 65dbd87 | 2006-09-03 12:27:25 +0000 | [diff] [blame] | 45 | |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 46 | ":" If one of the options requires an argument, then add a ":" |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 47 | after the char in applet_opts and provide a pointer to store |
| 48 | the argument. For example: |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 49 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 50 | char *pointer_to_arg_for_a; |
| 51 | char *pointer_to_arg_for_b; |
| 52 | char *pointer_to_arg_for_c; |
| 53 | char *pointer_to_arg_for_d; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 54 | |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 55 | flags = getopt32(argv, "a:b:c:d:", |
Denis Vlasenko | 6a2f7f4 | 2007-08-16 10:35:17 +0000 | [diff] [blame] | 56 | &pointer_to_arg_for_a, &pointer_to_arg_for_b, |
| 57 | &pointer_to_arg_for_c, &pointer_to_arg_for_d); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 58 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 59 | The type of the pointer (char* or llist_t*) may be controlled |
| 60 | by the "::" special separator that is set in the external string |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 61 | opt_complementary (see below for more info). |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 62 | |
| 63 | "::" If option can have an *optional* argument, then add a "::" |
| 64 | after its char in applet_opts and provide a pointer to store |
| 65 | the argument. Note that optional arguments _must_ |
| 66 | immediately follow the option: -oparam, not -o param. |
Mike Frysinger | e5d0bde | 2005-05-10 23:48:35 +0000 | [diff] [blame] | 67 | |
Mike Frysinger | 992a58c | 2006-02-22 22:56:30 +0000 | [diff] [blame] | 68 | "+" If the first character in the applet_opts string is a plus, |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 69 | then option processing will stop as soon as a non-option is |
| 70 | encountered in the argv array. Useful for applets like env |
| 71 | which should not process arguments to subprograms: |
| 72 | env -i ls -d / |
| 73 | Here we want env to process just the '-i', not the '-d'. |
Mike Frysinger | 992a58c | 2006-02-22 22:56:30 +0000 | [diff] [blame] | 74 | |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 75 | "!" Report bad option, missing required options, |
| 76 | inconsistent options with all-ones return value (instead of abort). |
| 77 | |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 78 | const char *applet_long_options |
Mike Frysinger | e5d0bde | 2005-05-10 23:48:35 +0000 | [diff] [blame] | 79 | |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 80 | This struct allows you to define long options: |
Mike Frysinger | e5d0bde | 2005-05-10 23:48:35 +0000 | [diff] [blame] | 81 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 82 | static const char applet_longopts[] ALIGN1 = |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 83 | //"name\0" has_arg val |
| 84 | "verbose\0" No_argument "v" |
Denis Vlasenko | 990d0f6 | 2007-07-24 15:54:42 +0000 | [diff] [blame] | 85 | ; |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 86 | applet_long_options = applet_longopts; |
Mike Frysinger | e5d0bde | 2005-05-10 23:48:35 +0000 | [diff] [blame] | 87 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 88 | The last member of struct option (val) typically is set to |
| 89 | matching short option from applet_opts. If there is no matching |
| 90 | char in applet_opts, then: |
| 91 | - return bit have next position after short options |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 92 | - if has_arg is not "No_argument", use ptr for arg also |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 93 | - opt_complementary affects it too |
Mike Frysinger | fb6d22c | 2005-05-11 00:02:39 +0000 | [diff] [blame] | 94 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 95 | Note: a good applet will make long options configurable via the |
| 96 | config process and not a required feature. The current standard |
| 97 | is to name the config option CONFIG_FEATURE_<applet>_LONG_OPTIONS. |
Mike Frysinger | fb6d22c | 2005-05-11 00:02:39 +0000 | [diff] [blame] | 98 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 99 | const char *opt_complementary |
Mike Frysinger | fb6d22c | 2005-05-11 00:02:39 +0000 | [diff] [blame] | 100 | |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 101 | ":" The colon (":") is used to separate groups of two or more chars |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 102 | and/or groups of chars and special characters (stating some |
| 103 | conditions to be checked). |
Mike Frysinger | e5d0bde | 2005-05-10 23:48:35 +0000 | [diff] [blame] | 104 | |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 105 | "abc" If groups of two or more chars are specified, the first char |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 106 | is the main option and the other chars are secondary options. |
| 107 | Their flags will be turned on if the main option is found even |
| 108 | if they are not specifed on the command line. For example: |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 109 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 110 | opt_complementary = "abc"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 111 | flags = getopt32(argv, "abcd") |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 112 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 113 | If getopt() finds "-a" on the command line, then |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 114 | getopt32's return value will be as if "-a -b -c" were |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 115 | found. |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 116 | |
Bernhard Reutner-Fischer | 43fb3fc | 2005-10-05 12:23:13 +0000 | [diff] [blame] | 117 | "ww" Adjacent double options have a counter associated which indicates |
Denys Vlasenko | 29ca159 | 2010-11-22 18:13:15 +0100 | [diff] [blame^] | 118 | the number of occurrences of the option. |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 119 | For example the ps applet needs: |
| 120 | if w is given once, GNU ps sets the width to 132, |
| 121 | if w is given more than once, it is "unlimited" |
"Vladimir N. Oleynik" | be0ed3d | 2005-10-04 16:48:26 +0000 | [diff] [blame] | 122 | |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 123 | int w_counter = 0; // must be initialized! |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 124 | opt_complementary = "ww"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 125 | getopt32(argv, "w", &w_counter); |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 126 | if (w_counter) |
Denis Vlasenko | 6a2f7f4 | 2007-08-16 10:35:17 +0000 | [diff] [blame] | 127 | width = (w_counter == 1) ? 132 : INT_MAX; |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 128 | else |
Denis Vlasenko | 6a2f7f4 | 2007-08-16 10:35:17 +0000 | [diff] [blame] | 129 | get_terminal_width(...&width...); |
"Vladimir N. Oleynik" | be0ed3d | 2005-10-04 16:48:26 +0000 | [diff] [blame] | 130 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 131 | w_counter is a pointer to an integer. It has to be passed to |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 132 | getopt32() after all other option argument sinks. |
Denis Vlasenko | 6429aab | 2006-09-23 12:22:11 +0000 | [diff] [blame] | 133 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 134 | For example: accept multiple -v to indicate the level of verbosity |
| 135 | and for each -b optarg, add optarg to my_b. Finally, if b is given, |
| 136 | turn off c and vice versa: |
Bernhard Reutner-Fischer | 43fb3fc | 2005-10-05 12:23:13 +0000 | [diff] [blame] | 137 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 138 | llist_t *my_b = NULL; |
| 139 | int verbose_level = 0; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 140 | opt_complementary = "vv:b::b-c:c-b"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 141 | f = getopt32(argv, "vb:c", &my_b, &verbose_level); |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 142 | if (f & 2) // -c after -b unsets -b flag |
Denis Vlasenko | d50dda8 | 2008-06-15 05:40:56 +0000 | [diff] [blame] | 143 | while (my_b) dosomething_with(llist_pop(&my_b)); |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 144 | if (my_b) // but llist is stored if -b is specified |
Denis Vlasenko | 6a2f7f4 | 2007-08-16 10:35:17 +0000 | [diff] [blame] | 145 | free_llist(my_b); |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 146 | if (verbose_level) printf("verbose level is %d\n", verbose_level); |
"Vladimir N. Oleynik" | be0ed3d | 2005-10-04 16:48:26 +0000 | [diff] [blame] | 147 | |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 148 | Special characters: |
| 149 | |
Denys Vlasenko | 0052882 | 2009-09-11 23:26:42 +0200 | [diff] [blame] | 150 | "-" A group consisting of just a dash forces all arguments |
| 151 | to be treated as options, even if they have no leading dashes. |
| 152 | Next char in this case can't be a digit (0-9), use ':' or end of line. |
| 153 | Example: |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 154 | |
Denys Vlasenko | 0052882 | 2009-09-11 23:26:42 +0200 | [diff] [blame] | 155 | opt_complementary = "-:w-x:x-w"; // "-w-x:x-w" would also work, |
| 156 | getopt32(argv, "wx"); // but is less readable |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 157 | |
Denys Vlasenko | 0052882 | 2009-09-11 23:26:42 +0200 | [diff] [blame] | 158 | This makes it possible to use options without a dash (./program w x) |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 159 | as well as with a dash (./program -x). |
| 160 | |
Denis Vlasenko | fd5a3d2 | 2008-11-12 22:06:46 +0000 | [diff] [blame] | 161 | NB: getopt32() will leak a small amount of memory if you use |
| 162 | this option! Do not use it if there is a possibility of recursive |
| 163 | getopt32() calls. |
Denis Vlasenko | e417be6 | 2008-08-20 23:03:38 +0000 | [diff] [blame] | 164 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 165 | "--" A double dash at the beginning of opt_complementary means the |
| 166 | argv[1] string should always be treated as options, even if it isn't |
| 167 | prefixed with a "-". This is useful for special syntax in applets |
| 168 | such as "ar" and "tar": |
| 169 | tar xvf foo.tar |
| 170 | |
Denis Vlasenko | fd5a3d2 | 2008-11-12 22:06:46 +0000 | [diff] [blame] | 171 | NB: getopt32() will leak a small amount of memory if you use |
| 172 | this option! Do not use it if there is a possibility of recursive |
| 173 | getopt32() calls. |
Denis Vlasenko | e417be6 | 2008-08-20 23:03:38 +0000 | [diff] [blame] | 174 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 175 | "-N" A dash as the first char in a opt_complementary group followed |
| 176 | by a single digit (0-9) means that at least N non-option |
| 177 | arguments must be present on the command line |
| 178 | |
| 179 | "=N" An equal sign as the first char in a opt_complementary group followed |
| 180 | by a single digit (0-9) means that exactly N non-option |
| 181 | arguments must be present on the command line |
| 182 | |
| 183 | "?N" A "?" as the first char in a opt_complementary group followed |
| 184 | by a single digit (0-9) means that at most N arguments must be present |
| 185 | on the command line. |
| 186 | |
| 187 | "V-" An option with dash before colon or end-of-line results in |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 188 | bb_show_usage() being called if this option is encountered. |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 189 | This is typically used to implement "print verbose usage message |
| 190 | and exit" option. |
| 191 | |
Denis Vlasenko | 6666ac4 | 2007-08-24 21:46:24 +0000 | [diff] [blame] | 192 | "a-b" A dash between two options causes the second of the two |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 193 | to be unset (and ignored) if it is given on the command line. |
Rob Landley | f76cd96 | 2006-05-03 21:23:15 +0000 | [diff] [blame] | 194 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 195 | [FIXME: what if they are the same? like "x-x"? Is it ever useful?] |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 196 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 197 | For example: |
| 198 | The du applet has the options "-s" and "-d depth". If |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 199 | getopt32 finds -s, then -d is unset or if it finds -d |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 200 | then -s is unset. (Note: busybox implements the GNU |
| 201 | "--max-depth" option as "-d".) To obtain this behavior, you |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 202 | set opt_complementary = "s-d:d-s". Only one flag value is |
| 203 | added to getopt32's return value depending on the |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 204 | position of the options on the command line. If one of the |
| 205 | two options requires an argument pointer (":" in applet_opts |
| 206 | as in "d:") optarg is set accordingly. |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 207 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 208 | char *smax_print_depth; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 209 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 210 | opt_complementary = "s-d:d-s:x-x"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 211 | opt = getopt32(argv, "sd:x", &smax_print_depth); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 212 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 213 | if (opt & 2) |
Denis Vlasenko | 6a2f7f4 | 2007-08-16 10:35:17 +0000 | [diff] [blame] | 214 | max_print_depth = atoi(smax_print_depth); |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 215 | if (opt & 4) |
Denis Vlasenko | 6a2f7f4 | 2007-08-16 10:35:17 +0000 | [diff] [blame] | 216 | printf("Detected odd -x usage\n"); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 217 | |
Denis Vlasenko | 6666ac4 | 2007-08-24 21:46:24 +0000 | [diff] [blame] | 218 | "a--b" A double dash between two options, or between an option and a group |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 219 | of options, means that they are mutually exclusive. Unlike |
| 220 | the "-" case above, an error will be forced if the options |
| 221 | are used together. |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 222 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 223 | For example: |
| 224 | The cut applet must have only one type of list specified, so |
Denis Vlasenko | a0319ba | 2007-08-16 10:37:49 +0000 | [diff] [blame] | 225 | -b, -c and -f are mutually exclusive and should raise an error |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 226 | if specified together. In this case you must set |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 227 | opt_complementary = "b--cf:c--bf:f--bc". If two of the |
Denis Vlasenko | 0919657 | 2007-07-21 13:27:44 +0000 | [diff] [blame] | 228 | mutually exclusive options are found, getopt32 will call |
| 229 | bb_show_usage() and die. |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 230 | |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 231 | "x--x" Variation of the above, it means that -x option should occur |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 232 | at most once. |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 233 | |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 234 | "a+" A plus after a char in opt_complementary means that the parameter |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 235 | for this option is a nonnegative integer. It will be processed |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 236 | with xatoi_positive() - allowed range is 0..INT_MAX. |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 237 | |
| 238 | int param; // "unsigned param;" will also work |
| 239 | opt_complementary = "p+"; |
| 240 | getopt32(argv, "p:", ¶m); |
| 241 | |
Denis Vlasenko | 6666ac4 | 2007-08-24 21:46:24 +0000 | [diff] [blame] | 242 | "a::" A double colon after a char in opt_complementary means that the |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 243 | option can occur multiple times. Each occurrence will be saved as |
| 244 | a llist_t element instead of char*. |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 245 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 246 | For example: |
| 247 | The grep applet can have one or more "-e pattern" arguments. |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 248 | In this case you should use getopt32() as follows: |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 249 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 250 | llist_t *patterns = NULL; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 251 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 252 | (this pointer must be initializated to NULL if the list is empty |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 253 | as required by llist_add_to_end(llist_t **old_head, char *new_item).) |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 254 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 255 | opt_complementary = "e::"; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 256 | |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 257 | getopt32(argv, "e:", &patterns); |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 258 | $ grep -e user -e root /etc/passwd |
| 259 | root:x:0:0:root:/root:/bin/bash |
| 260 | user:x:500:500::/home/user:/bin/bash |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 261 | |
Denis Vlasenko | 6666ac4 | 2007-08-24 21:46:24 +0000 | [diff] [blame] | 262 | "a?b" A "?" between an option and a group of options means that |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 263 | at least one of them is required to occur if the first option |
| 264 | occurs in preceding command line arguments. |
Rob Landley | f76cd96 | 2006-05-03 21:23:15 +0000 | [diff] [blame] | 265 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 266 | For example from "id" applet: |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 267 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 268 | // Don't allow -n -r -rn -ug -rug -nug -rnug |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 269 | opt_complementary = "r?ug:n?ug:u--g:g--u"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 270 | flags = getopt32(argv, "rnug"); |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 271 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 272 | This example allowed only: |
| 273 | $ id; id -u; id -g; id -ru; id -nu; id -rg; id -ng; id -rnu; id -rng |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 274 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 275 | "X" A opt_complementary group with just a single letter means |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 276 | that this option is required. If more than one such group exists, |
| 277 | at least one option is required to occur (not all of them). |
| 278 | For example from "start-stop-daemon" applet: |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 279 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 280 | // Don't allow -KS -SK, but -S or -K is required |
Denis Vlasenko | 6666ac4 | 2007-08-24 21:46:24 +0000 | [diff] [blame] | 281 | opt_complementary = "K:S:K--S:S--K"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 282 | flags = getopt32(argv, "KS...); |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 283 | |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 284 | |
Denis Vlasenko | f0d6cc8 | 2006-09-29 13:56:58 +0000 | [diff] [blame] | 285 | Don't forget to use ':'. For example, "?322-22-23X-x-a" |
| 286 | is interpreted as "?3:22:-2:2-2:2-3Xa:2--x" - |
| 287 | max 3 args; count uses of '-2'; min 2 args; if there is |
| 288 | a '-2' option then unset '-3', '-X' and '-a'; if there is |
| 289 | a '-2' and after it a '-x' then error out. |
Denis Vlasenko | 737d131 | 2007-08-25 18:25:24 +0000 | [diff] [blame] | 290 | But it's far too obfuscated. Use ':' to separate groups. |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 291 | */ |
| 292 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 293 | /* Code here assumes that 'unsigned' is at least 32 bits wide */ |
| 294 | |
Denis Vlasenko | 62a90cd | 2008-03-17 09:07:36 +0000 | [diff] [blame] | 295 | const char *const bb_argv_dash[] = { "-", NULL }; |
| 296 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 297 | const char *opt_complementary; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 298 | |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 299 | enum { |
| 300 | PARAM_STRING, |
| 301 | PARAM_LIST, |
| 302 | PARAM_INT, |
| 303 | }; |
| 304 | |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 305 | typedef struct { |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 306 | unsigned char opt_char; |
| 307 | smallint param_type; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 308 | unsigned switch_on; |
| 309 | unsigned switch_off; |
| 310 | unsigned incongruously; |
| 311 | unsigned requires; |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 312 | void **optarg; /* char**, llist_t** or int *. */ |
"Vladimir N. Oleynik" | be0ed3d | 2005-10-04 16:48:26 +0000 | [diff] [blame] | 313 | int *counter; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 314 | } t_complementary; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 315 | |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 316 | /* You can set applet_long_options for parse called long options */ |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 317 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 318 | static const struct option bb_null_long_options[1] = { |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 319 | { 0, 0, 0, 0 } |
| 320 | }; |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 321 | const char *applet_long_options; |
Bernhard Reutner-Fischer | f9437aa | 2006-05-31 14:12:51 +0000 | [diff] [blame] | 322 | #endif |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 323 | |
Denis Vlasenko | c12f530 | 2006-10-06 09:49:47 +0000 | [diff] [blame] | 324 | uint32_t option_mask32; |
| 325 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 326 | uint32_t FAST_FUNC |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 327 | getopt32(char **argv, const char *applet_opts, ...) |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 328 | { |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 329 | int argc; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 330 | unsigned flags = 0; |
| 331 | unsigned requires = 0; |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 332 | t_complementary complementary[33]; /* last stays zero-filled */ |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 333 | char first_char; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 334 | int c; |
| 335 | const unsigned char *s; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 336 | t_complementary *on_off; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 337 | va_list p; |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 338 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 339 | const struct option *l_o; |
Denis Vlasenko | 5bfcb4d | 2007-07-23 17:40:35 +0000 | [diff] [blame] | 340 | struct option *long_options = (struct option *) &bb_null_long_options; |
Bernhard Reutner-Fischer | f9437aa | 2006-05-31 14:12:51 +0000 | [diff] [blame] | 341 | #endif |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 342 | unsigned trigger; |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 343 | char **pargv; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 344 | int min_arg = 0; |
| 345 | int max_arg = -1; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 346 | |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 347 | #define SHOW_USAGE_IF_ERROR 1 |
| 348 | #define ALL_ARGV_IS_OPTS 2 |
| 349 | #define FIRST_ARGV_IS_OPT 4 |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 350 | |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 351 | int spec_flgs = 0; |
| 352 | |
Denis Vlasenko | 4301616 | 2008-08-20 00:15:42 +0000 | [diff] [blame] | 353 | /* skip 0: some applets cheat: they do not actually HAVE argv[0] */ |
| 354 | argc = 1; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 355 | while (argv[argc]) |
| 356 | argc++; |
| 357 | |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 358 | va_start(p, applet_opts); |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 359 | |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 360 | c = 0; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 361 | on_off = complementary; |
| 362 | memset(on_off, 0, sizeof(complementary)); |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 363 | |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 364 | /* skip bbox extension */ |
| 365 | first_char = applet_opts[0]; |
| 366 | if (first_char == '!') |
| 367 | applet_opts++; |
| 368 | |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 369 | /* skip GNU extension */ |
"Vladimir N. Oleynik" | bf968f7 | 2005-12-02 10:10:28 +0000 | [diff] [blame] | 370 | s = (const unsigned char *)applet_opts; |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 371 | if (*s == '+' || *s == '-') |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 372 | s++; |
Denis Vlasenko | c8400a2 | 2006-10-25 00:33:44 +0000 | [diff] [blame] | 373 | while (*s) { |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 374 | if (c >= 32) |
| 375 | break; |
| 376 | on_off->opt_char = *s; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 377 | on_off->switch_on = (1 << c); |
Denis Vlasenko | c8400a2 | 2006-10-25 00:33:44 +0000 | [diff] [blame] | 378 | if (*++s == ':') { |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 379 | on_off->optarg = va_arg(p, void **); |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 380 | while (*++s == ':') |
| 381 | continue; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 382 | } |
| 383 | on_off++; |
| 384 | c++; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 385 | } |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 386 | |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 387 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 388 | if (applet_long_options) { |
| 389 | const char *optstr; |
| 390 | unsigned i, count; |
| 391 | |
| 392 | count = 1; |
| 393 | optstr = applet_long_options; |
| 394 | while (optstr[0]) { |
Denis Vlasenko | 5bfcb4d | 2007-07-23 17:40:35 +0000 | [diff] [blame] | 395 | optstr += strlen(optstr) + 3; /* skip NUL, has_arg, val */ |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 396 | count++; |
| 397 | } |
| 398 | /* count == no. of longopts + 1 */ |
Denis Vlasenko | 5bfcb4d | 2007-07-23 17:40:35 +0000 | [diff] [blame] | 399 | long_options = alloca(count * sizeof(*long_options)); |
Denis Vlasenko | f4cee7a | 2007-07-25 17:18:06 +0000 | [diff] [blame] | 400 | memset(long_options, 0, count * sizeof(*long_options)); |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 401 | i = 0; |
| 402 | optstr = applet_long_options; |
| 403 | while (--count) { |
| 404 | long_options[i].name = optstr; |
| 405 | optstr += strlen(optstr) + 1; |
| 406 | long_options[i].has_arg = (unsigned char)(*optstr++); |
| 407 | /* long_options[i].flag = NULL; */ |
| 408 | long_options[i].val = (unsigned char)(*optstr++); |
| 409 | i++; |
| 410 | } |
| 411 | for (l_o = long_options; l_o->name; l_o++) { |
| 412 | if (l_o->flag) |
| 413 | continue; |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 414 | for (on_off = complementary; on_off->opt_char; on_off++) |
| 415 | if (on_off->opt_char == l_o->val) |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 416 | goto next_long; |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 417 | if (c >= 32) |
| 418 | break; |
| 419 | on_off->opt_char = l_o->val; |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 420 | on_off->switch_on = (1 << c); |
| 421 | if (l_o->has_arg != no_argument) |
| 422 | on_off->optarg = va_arg(p, void **); |
| 423 | c++; |
Denis Vlasenko | c8400a2 | 2006-10-25 00:33:44 +0000 | [diff] [blame] | 424 | next_long: ; |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 425 | } |
Denys Vlasenko | d46c36c | 2010-03-16 17:57:53 +0100 | [diff] [blame] | 426 | /* Make it unnecessary to clear applet_long_options |
| 427 | * by hand after each call to getopt32 |
| 428 | */ |
| 429 | applet_long_options = NULL; |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 430 | } |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 431 | #endif /* ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG */ |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 432 | for (s = (const unsigned char *)opt_complementary; s && *s; s++) { |
| 433 | t_complementary *pair; |
| 434 | unsigned *pair_switch; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 435 | |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 436 | if (*s == ':') |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 437 | continue; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 438 | c = s[1]; |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 439 | if (*s == '?') { |
| 440 | if (c < '0' || c > '9') { |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 441 | spec_flgs |= SHOW_USAGE_IF_ERROR; |
| 442 | } else { |
| 443 | max_arg = c - '0'; |
| 444 | s++; |
| 445 | } |
"Vladimir N. Oleynik" | 27421a1 | 2005-09-05 14:46:07 +0000 | [diff] [blame] | 446 | continue; |
| 447 | } |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 448 | if (*s == '-') { |
| 449 | if (c < '0' || c > '9') { |
| 450 | if (c == '-') { |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 451 | spec_flgs |= FIRST_ARGV_IS_OPT; |
| 452 | s++; |
| 453 | } else |
| 454 | spec_flgs |= ALL_ARGV_IS_OPTS; |
| 455 | } else { |
| 456 | min_arg = c - '0'; |
| 457 | s++; |
| 458 | } |
"Vladimir N. Oleynik" | 35939d9 | 2005-10-05 10:52:47 +0000 | [diff] [blame] | 459 | continue; |
| 460 | } |
Denis Vlasenko | 456fa6c | 2006-10-20 18:36:55 +0000 | [diff] [blame] | 461 | if (*s == '=') { |
| 462 | min_arg = max_arg = c - '0'; |
| 463 | s++; |
| 464 | continue; |
| 465 | } |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 466 | for (on_off = complementary; on_off->opt_char; on_off++) |
| 467 | if (on_off->opt_char == *s) |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 468 | break; |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 469 | if (c == ':' && s[2] == ':') { |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 470 | on_off->param_type = PARAM_LIST; |
| 471 | continue; |
| 472 | } |
| 473 | if (c == '+' && (s[2] == ':' || s[2] == '\0')) { |
| 474 | on_off->param_type = PARAM_INT; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 475 | continue; |
| 476 | } |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 477 | if (c == ':' || c == '\0') { |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 478 | requires |= on_off->switch_on; |
| 479 | continue; |
| 480 | } |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 481 | if (c == '-' && (s[2] == ':' || s[2] == '\0')) { |
"Vladimir N. Oleynik" | 4fc9220 | 2006-02-02 14:48:54 +0000 | [diff] [blame] | 482 | flags |= on_off->switch_on; |
| 483 | on_off->incongruously |= on_off->switch_on; |
| 484 | s++; |
| 485 | continue; |
| 486 | } |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 487 | if (c == *s) { |
| 488 | on_off->counter = va_arg(p, int *); |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 489 | s++; |
| 490 | } |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 491 | pair = on_off; |
Denys Vlasenko | d46c36c | 2010-03-16 17:57:53 +0100 | [diff] [blame] | 492 | pair_switch = &pair->switch_on; |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 493 | for (s++; *s && *s != ':'; s++) { |
| 494 | if (*s == '?') { |
Denys Vlasenko | d46c36c | 2010-03-16 17:57:53 +0100 | [diff] [blame] | 495 | pair_switch = &pair->requires; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 496 | } else if (*s == '-') { |
Denys Vlasenko | d46c36c | 2010-03-16 17:57:53 +0100 | [diff] [blame] | 497 | if (pair_switch == &pair->switch_off) |
| 498 | pair_switch = &pair->incongruously; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 499 | else |
Denys Vlasenko | d46c36c | 2010-03-16 17:57:53 +0100 | [diff] [blame] | 500 | pair_switch = &pair->switch_off; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 501 | } else { |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 502 | for (on_off = complementary; on_off->opt_char; on_off++) |
| 503 | if (on_off->opt_char == *s) { |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 504 | *pair_switch |= on_off->switch_on; |
| 505 | break; |
| 506 | } |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 507 | } |
| 508 | } |
| 509 | s--; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 510 | } |
Denys Vlasenko | d46c36c | 2010-03-16 17:57:53 +0100 | [diff] [blame] | 511 | opt_complementary = NULL; |
Denis Vlasenko | ff131b9 | 2007-04-10 15:42:06 +0000 | [diff] [blame] | 512 | va_end(p); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 513 | |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 514 | if (spec_flgs & (FIRST_ARGV_IS_OPT | ALL_ARGV_IS_OPTS)) { |
| 515 | pargv = argv + 1; |
| 516 | while (*pargv) { |
| 517 | if (pargv[0][0] != '-' && pargv[0][0] != '\0') { |
Denis Vlasenko | e417be6 | 2008-08-20 23:03:38 +0000 | [diff] [blame] | 518 | /* Can't use alloca: opts with params will |
| 519 | * return pointers to stack! |
| 520 | * NB: we leak these allocations... */ |
| 521 | char *pp = xmalloc(strlen(*pargv) + 2); |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 522 | *pp = '-'; |
| 523 | strcpy(pp + 1, *pargv); |
| 524 | *pargv = pp; |
| 525 | } |
| 526 | if (!(spec_flgs & ALL_ARGV_IS_OPTS)) |
Denis Vlasenko | ea7c9b3 | 2008-09-25 10:39:10 +0000 | [diff] [blame] | 527 | break; |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 528 | pargv++; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 529 | } |
| 530 | } |
Denis Vlasenko | 24af720 | 2007-03-15 13:28:46 +0000 | [diff] [blame] | 531 | |
Denis Vlasenko | fd5a3d2 | 2008-11-12 22:06:46 +0000 | [diff] [blame] | 532 | /* In case getopt32 was already called: |
| 533 | * reset the libc getopt() function, which keeps internal state. |
| 534 | * run_nofork_applet_prime() does this, but we might end up here |
| 535 | * also via gunzip_main() -> gzip_main(). Play safe. |
| 536 | */ |
| 537 | #ifdef __GLIBC__ |
| 538 | optind = 0; |
| 539 | #else /* BSD style */ |
| 540 | optind = 1; |
| 541 | /* optreset = 1; */ |
| 542 | #endif |
| 543 | /* optarg = NULL; opterr = 0; optopt = 0; - do we need this?? */ |
| 544 | |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 545 | pargv = NULL; |
Denis Vlasenko | 24af720 | 2007-03-15 13:28:46 +0000 | [diff] [blame] | 546 | |
Denis Vlasenko | 9772816 | 2008-01-28 22:57:10 +0000 | [diff] [blame] | 547 | /* Note: just "getopt() <= 0" will not work well for |
Denis Vlasenko | c8400a2 | 2006-10-25 00:33:44 +0000 | [diff] [blame] | 548 | * "fake" short options, like this one: |
| 549 | * wget $'-\203' "Test: test" http://kernel.org/ |
| 550 | * (supposed to act as --header, but doesn't) */ |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 551 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 552 | while ((c = getopt_long(argc, argv, applet_opts, |
Denis Vlasenko | 5bfcb4d | 2007-07-23 17:40:35 +0000 | [diff] [blame] | 553 | long_options, NULL)) != -1) { |
Bernhard Reutner-Fischer | f9437aa | 2006-05-31 14:12:51 +0000 | [diff] [blame] | 554 | #else |
Denis Vlasenko | c8400a2 | 2006-10-25 00:33:44 +0000 | [diff] [blame] | 555 | while ((c = getopt(argc, argv, applet_opts)) != -1) { |
Denis Vlasenko | 24af720 | 2007-03-15 13:28:46 +0000 | [diff] [blame] | 556 | #endif |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 557 | /* getopt prints "option requires an argument -- X" |
| 558 | * and returns '?' if an option has no arg, but one is reqd */ |
Denis Vlasenko | 9772816 | 2008-01-28 22:57:10 +0000 | [diff] [blame] | 559 | c &= 0xff; /* fight libc's sign extension */ |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 560 | for (on_off = complementary; on_off->opt_char != c; on_off++) { |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 561 | /* c can be NUL if long opt has non-NULL ->flag, |
| 562 | * but we construct long opts so that flag |
| 563 | * is always NULL (see above) */ |
| 564 | if (on_off->opt_char == '\0' /* && c != '\0' */) { |
| 565 | /* c is probably '?' - "bad option" */ |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 566 | goto error; |
Denis Vlasenko | 1c45a50 | 2008-08-20 00:12:22 +0000 | [diff] [blame] | 567 | } |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 568 | } |
Denis Vlasenko | 0919657 | 2007-07-21 13:27:44 +0000 | [diff] [blame] | 569 | if (flags & on_off->incongruously) |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 570 | goto error; |
"Vladimir N. Oleynik" | 45a8ed8 | 2005-09-06 16:08:33 +0000 | [diff] [blame] | 571 | trigger = on_off->switch_on & on_off->switch_off; |
| 572 | flags &= ~(on_off->switch_off ^ trigger); |
| 573 | flags |= on_off->switch_on ^ trigger; |
| 574 | flags ^= trigger; |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 575 | if (on_off->counter) |
"Vladimir N. Oleynik" | be0ed3d | 2005-10-04 16:48:26 +0000 | [diff] [blame] | 576 | (*(on_off->counter))++; |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 577 | if (on_off->param_type == PARAM_LIST) { |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 578 | if (optarg) |
| 579 | llist_add_to_end((llist_t **)(on_off->optarg), optarg); |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 580 | } else if (on_off->param_type == PARAM_INT) { |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 581 | if (optarg) |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 582 | //TODO: xatoi_positive indirectly pulls in printf machinery |
| 583 | *(unsigned*)(on_off->optarg) = xatoi_positive(optarg); |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 584 | } else if (on_off->optarg) { |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 585 | if (optarg) |
| 586 | *(char **)(on_off->optarg) = optarg; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 587 | } |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 588 | if (pargv != NULL) |
"Vladimir N. Oleynik" | 35939d9 | 2005-10-05 10:52:47 +0000 | [diff] [blame] | 589 | break; |
| 590 | } |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 591 | |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 592 | /* check depending requires for given options */ |
Denis Vlasenko | 04e11c9 | 2008-02-10 19:44:20 +0000 | [diff] [blame] | 593 | for (on_off = complementary; on_off->opt_char; on_off++) { |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 594 | if (on_off->requires |
| 595 | && (flags & on_off->switch_on) |
| 596 | && (flags & on_off->requires) == 0 |
| 597 | ) { |
| 598 | goto error; |
| 599 | } |
"Vladimir N. Oleynik" | 064f04e | 2005-10-11 14:38:01 +0000 | [diff] [blame] | 600 | } |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 601 | if (requires && (flags & requires) == 0) |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 602 | goto error; |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 603 | argc -= optind; |
Denis Vlasenko | b02ef82 | 2006-09-29 08:23:42 +0000 | [diff] [blame] | 604 | if (argc < min_arg || (max_arg >= 0 && argc > max_arg)) |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 605 | goto error; |
Denis Vlasenko | c12f530 | 2006-10-06 09:49:47 +0000 | [diff] [blame] | 606 | |
| 607 | option_mask32 = flags; |
Mike Frysinger | 2bf88a8 | 2005-04-18 22:42:58 +0000 | [diff] [blame] | 608 | return flags; |
Denis Vlasenko | 28e6796 | 2009-04-26 23:22:40 +0000 | [diff] [blame] | 609 | |
| 610 | error: |
| 611 | if (first_char != '!') |
| 612 | bb_show_usage(); |
| 613 | return (int32_t)-1; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 614 | } |