1 /* goption.c - Option parser
3 * Copyright (C) 1999, 2003 Red Hat Software
4 * Copyright (C) 2004 Anders Carlsson <andersca@gnome.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 * @Short_description: parses commandline options
23 * @Title: Commandline option parser
25 * The GOption commandline parser is intended to be a simpler replacement
26 * for the popt library. It supports short and long commandline options,
27 * as shown in the following example:
29 * `testtreemodel -r 1 --max-size 20 --rand --display=:1.0 -vb -- file1 file2`
31 * The example demonstrates a number of features of the GOption
34 * - Options can be single letters, prefixed by a single dash.
36 * - Multiple short options can be grouped behind a single dash.
38 * - Long options are prefixed by two consecutive dashes.
40 * - Options can have an extra argument, which can be a number, a string or
41 * a filename. For long options, the extra argument can be appended with
42 * an equals sign after the option name, which is useful if the extra
43 * argument starts with a dash, which would otherwise cause it to be
44 * interpreted as another option.
46 * - Non-option arguments are returned to the application as rest arguments.
48 * - An argument consisting solely of two dashes turns off further parsing,
49 * any remaining arguments (even those starting with a dash) are returned
50 * to the application as rest arguments.
52 * Another important feature of GOption is that it can automatically
53 * generate nicely formatted help output. Unless it is explicitly turned
54 * off with g_option_context_set_help_enabled(), GOption will recognize
55 * the `--help`, `-?`, `--help-all` and `--help-groupname` options
56 * (where `groupname` is the name of a #GOptionGroup) and write a text
57 * similar to the one shown in the following example to stdout.
61 * testtreemodel [OPTION...] - test tree model performance
64 * -h, --help Show help options
65 * --help-all Show all help options
66 * --help-gtk Show GTK+ Options
68 * Application Options:
69 * -r, --repeats=N Average over N repetitions
70 * -m, --max-size=M Test up to 2^M items
71 * --display=DISPLAY X display to use
72 * -v, --verbose Be verbose
73 * -b, --beep Beep when done
74 * --rand Randomize the data
77 * GOption groups options in #GOptionGroups, which makes it easy to
78 * incorporate options from multiple sources. The intended use for this is
79 * to let applications collect option groups from the libraries it uses,
80 * add them to their #GOptionContext, and parse all options by a single call
81 * to g_option_context_parse(). See gtk_get_option_group() for an example.
83 * If an option is declared to be of type string or filename, GOption takes
84 * care of converting it to the right encoding; strings are returned in
85 * UTF-8, filenames are returned in the GLib filename encoding. Note that
86 * this only works if setlocale() has been called before
87 * g_option_context_parse().
89 * Here is a complete example of setting up GOption to parse the example
90 * commandline above and produce the example help output.
91 * |[<!-- language="C" -->
92 * static gint repeats = 2;
93 * static gint max_size = 8;
94 * static gboolean verbose = FALSE;
95 * static gboolean beep = FALSE;
96 * static gboolean randomize = FALSE;
98 * static GOptionEntry entries[] =
100 * { "repeats", 'r', 0, G_OPTION_ARG_INT, &repeats, "Average over N repetitions", "N" },
101 * { "max-size", 'm', 0, G_OPTION_ARG_INT, &max_size, "Test up to 2^M items", "M" },
102 * { "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL },
103 * { "beep", 'b', 0, G_OPTION_ARG_NONE, &beep, "Beep when done", NULL },
104 * { "rand", 0, 0, G_OPTION_ARG_NONE, &randomize, "Randomize the data", NULL },
109 * main (int argc, char *argv[])
111 * GError *error = NULL;
112 * GOptionContext *context;
114 * context = g_option_context_new ("- test tree model performance");
115 * g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
116 * g_option_context_add_group (context, gtk_get_option_group (TRUE));
117 * if (!g_option_context_parse (context, &argc, &argv, &error))
119 * g_print ("option parsing failed: %s\n", error->message);
128 * On UNIX systems, the argv that is passed to main() has no particular
129 * encoding, even to the extent that different parts of it may have
130 * different encodings. In general, normal arguments and flags will be
131 * in the current locale and filenames should be considered to be opaque
132 * byte strings. Proper use of %G_OPTION_ARG_FILENAME vs
133 * %G_OPTION_ARG_STRING is therefore important.
135 * Note that on Windows, filenames do have an encoding, but using
136 * #GOptionContext with the argv as passed to main() will result in a
137 * program that can only accept commandline arguments with characters
138 * from the system codepage. This can cause problems when attempting to
139 * deal with filenames containing Unicode characters that fall outside
142 * A solution to this is to use g_win32_get_command_line() and
143 * g_option_context_parse_strv() which will properly handle full Unicode
144 * filenames. If you are using #GApplication, this is done
145 * automatically for you.
147 * The following example shows how you can use #GOptionContext directly
148 * in order to correctly deal with Unicode filenames on Windows:
150 * |[<!-- language="C" -->
152 * main (int argc, char **argv)
154 * GError *error = NULL;
155 * GOptionContext *context;
159 * args = g_win32_get_command_line ();
161 * args = g_strdupv (argv);
166 * if (!g_option_context_parse_strv (context, &args, &error))
187 #if defined __OpenBSD__
189 #include <sys/sysctl.h>
195 #include "glibintl.h"
197 #define TRANSLATE(group, str) (((group)->translate_func ? (* (group)->translate_func) ((str), (group)->translate_data) : (str)))
199 #define NO_ARG(entry) ((entry)->arg == G_OPTION_ARG_NONE || \
200 ((entry)->arg == G_OPTION_ARG_CALLBACK && \
201 ((entry)->flags & G_OPTION_FLAG_NO_ARG)))
203 #define OPTIONAL_ARG(entry) ((entry)->arg == G_OPTION_ARG_CALLBACK && \
204 (entry)->flags & G_OPTION_FLAG_OPTIONAL_ARG)
236 struct _GOptionContext
240 gchar *parameter_string;
244 GTranslateFunc translate_func;
245 GDestroyNotify translate_notify;
246 gpointer translate_data;
248 guint help_enabled : 1;
249 guint ignore_unknown : 1;
251 guint strict_posix : 1;
253 GOptionGroup *main_group;
255 /* We keep a list of change so we can revert them */
258 /* We also keep track of all argv elements
259 * that should be NULLed or modified.
261 GList *pending_nulls;
268 gchar *help_description;
270 GDestroyNotify destroy_notify;
273 GTranslateFunc translate_func;
274 GDestroyNotify translate_notify;
275 gpointer translate_data;
277 GOptionEntry *entries;
280 GOptionParseFunc pre_parse_func;
281 GOptionParseFunc post_parse_func;
282 GOptionErrorFunc error_func;
285 static void free_changes_list (GOptionContext *context,
287 static void free_pending_nulls (GOptionContext *context,
288 gboolean perform_nulls);
292 _g_unichar_get_width (gunichar c)
294 if (G_UNLIKELY (g_unichar_iszerowidth (c)))
297 /* we ignore the fact that we should call g_unichar_iswide_cjk() under
298 * some locales (legacy East Asian ones) */
299 if (g_unichar_iswide (c))
306 _g_utf8_strwidth (const gchar *p)
309 g_return_val_if_fail (p != NULL, 0);
313 len += _g_unichar_get_width (g_utf8_get_char (p));
314 p = g_utf8_next_char (p);
320 G_DEFINE_QUARK (g-option-context-error-quark, g_option_error)
323 * g_option_context_new:
324 * @parameter_string: (allow-none): a string which is displayed in
325 * the first line of `--help` output, after the usage summary
326 * `programname [OPTION...]`
328 * Creates a new option context.
330 * The @parameter_string can serve multiple purposes. It can be used
331 * to add descriptions for "rest" arguments, which are not parsed by
332 * the #GOptionContext, typically something like "FILES" or
333 * "FILE1 FILE2...". If you are using #G_OPTION_REMAINING for
334 * collecting "rest" arguments, GLib handles this automatically by
335 * using the @arg_description of the corresponding #GOptionEntry in
338 * Another usage is to give a short summary of the program
339 * functionality, like " - frob the strings", which will be displayed
340 * in the same line as the usage. For a longer description of the
341 * program functionality that should be displayed as a paragraph
342 * below the usage line, use g_option_context_set_summary().
344 * Note that the @parameter_string is translated using the
345 * function set with g_option_context_set_translate_func(), so
346 * it should normally be passed untranslated.
348 * Returns: a newly created #GOptionContext, which must be
349 * freed with g_option_context_free() after use.
354 g_option_context_new (const gchar *parameter_string)
357 GOptionContext *context;
359 context = g_new0 (GOptionContext, 1);
361 context->parameter_string = g_strdup (parameter_string);
362 context->strict_posix = FALSE;
363 context->help_enabled = TRUE;
364 context->ignore_unknown = FALSE;
370 * g_option_context_free:
371 * @context: a #GOptionContext
373 * Frees context and all the groups which have been
376 * Please note that parsed arguments need to be freed separately (see
381 void g_option_context_free (GOptionContext *context)
383 g_return_if_fail (context != NULL);
385 g_list_free_full (context->groups, (GDestroyNotify) g_option_group_free);
387 if (context->main_group)
388 g_option_group_free (context->main_group);
390 free_changes_list (context, FALSE);
391 free_pending_nulls (context, FALSE);
393 g_free (context->parameter_string);
394 g_free (context->summary);
395 g_free (context->description);
397 if (context->translate_notify)
398 (* context->translate_notify) (context->translate_data);
405 * g_option_context_set_help_enabled:
406 * @context: a #GOptionContext
407 * @help_enabled: %TRUE to enable `--help`, %FALSE to disable it
409 * Enables or disables automatic generation of `--help` output.
410 * By default, g_option_context_parse() recognizes `--help`, `-h`,
411 * `-?`, `--help-all` and `--help-groupname` and creates suitable
416 void g_option_context_set_help_enabled (GOptionContext *context,
417 gboolean help_enabled)
420 g_return_if_fail (context != NULL);
422 context->help_enabled = help_enabled;
426 * g_option_context_get_help_enabled:
427 * @context: a #GOptionContext
429 * Returns whether automatic `--help` generation
430 * is turned on for @context. See g_option_context_set_help_enabled().
432 * Returns: %TRUE if automatic help generation is turned on.
437 g_option_context_get_help_enabled (GOptionContext *context)
439 g_return_val_if_fail (context != NULL, FALSE);
441 return context->help_enabled;
445 * g_option_context_set_ignore_unknown_options:
446 * @context: a #GOptionContext
447 * @ignore_unknown: %TRUE to ignore unknown options, %FALSE to produce
448 * an error when unknown options are met
450 * Sets whether to ignore unknown options or not. If an argument is
451 * ignored, it is left in the @argv array after parsing. By default,
452 * g_option_context_parse() treats unknown options as error.
454 * This setting does not affect non-option arguments (i.e. arguments
455 * which don't start with a dash). But note that GOption cannot reliably
456 * determine whether a non-option belongs to a preceding unknown option.
461 g_option_context_set_ignore_unknown_options (GOptionContext *context,
462 gboolean ignore_unknown)
464 g_return_if_fail (context != NULL);
466 context->ignore_unknown = ignore_unknown;
470 * g_option_context_get_ignore_unknown_options:
471 * @context: a #GOptionContext
473 * Returns whether unknown options are ignored or not. See
474 * g_option_context_set_ignore_unknown_options().
476 * Returns: %TRUE if unknown options are ignored.
481 g_option_context_get_ignore_unknown_options (GOptionContext *context)
483 g_return_val_if_fail (context != NULL, FALSE);
485 return context->ignore_unknown;
489 * g_option_context_set_strict_posix:
490 * @context: a #GoptionContext
492 * Sets strict POSIX mode.
494 * By default, this mode is disabled.
496 * In strict POSIX mode, the first non-argument parameter encountered
497 * (eg: filename) terminates argument processing. Remaining arguments
498 * are treated as non-options and are not attempted to be parsed.
500 * If strict POSIX mode is disabled then parsing is done in the GNU way
501 * where option arguments can be freely mixed with non-options.
503 * As an example, consider "ls foo -l". With GNU style parsing, this
504 * will list "foo" in long mode. In strict POSIX style, this will list
505 * the files named "foo" and "-l".
507 * It may be useful to force strict POSIX mode when creating "verb
508 * style" command line tools. For example, the "gsettings" command line
509 * tool supports the global option "--schemadir" as well as many
510 * subcommands ("get", "set", etc.) which each have their own set of
511 * arguments. Using strict POSIX mode will allow parsing the global
512 * options up to the verb name while leaving the remaining options to be
513 * parsed by the relevant subcommand (which can be determined by
514 * examining the verb name, which should be present in argv[1] after
520 g_option_context_set_strict_posix (GOptionContext *context,
521 gboolean strict_posix)
523 g_return_if_fail (context != NULL);
525 context->strict_posix = strict_posix;
529 * g_option_context_get_strict_posix:
530 * @context: a #GoptionContext
532 * Returns whether strict POSIX code is enabled.
534 * See g_option_context_set_strict_posix() for more information.
539 g_option_context_get_strict_posix (GOptionContext *context)
541 g_return_val_if_fail (context != NULL, FALSE);
543 return context->strict_posix;
547 * g_option_context_add_group:
548 * @context: a #GOptionContext
549 * @group: the group to add
551 * Adds a #GOptionGroup to the @context, so that parsing with @context
552 * will recognize the options in the group. Note that the group will
553 * be freed together with the context when g_option_context_free() is
554 * called, so you must not free the group yourself after adding it
560 g_option_context_add_group (GOptionContext *context,
565 g_return_if_fail (context != NULL);
566 g_return_if_fail (group != NULL);
567 g_return_if_fail (group->name != NULL);
568 g_return_if_fail (group->description != NULL);
569 g_return_if_fail (group->help_description != NULL);
571 for (list = context->groups; list; list = list->next)
573 GOptionGroup *g = (GOptionGroup *)list->data;
575 if ((group->name == NULL && g->name == NULL) ||
576 (group->name && g->name && strcmp (group->name, g->name) == 0))
577 g_warning ("A group named \"%s\" is already part of this GOptionContext",
581 context->groups = g_list_append (context->groups, group);
585 * g_option_context_set_main_group:
586 * @context: a #GOptionContext
587 * @group: the group to set as main group
589 * Sets a #GOptionGroup as main group of the @context.
590 * This has the same effect as calling g_option_context_add_group(),
591 * the only difference is that the options in the main group are
592 * treated differently when generating `--help` output.
597 g_option_context_set_main_group (GOptionContext *context,
600 g_return_if_fail (context != NULL);
601 g_return_if_fail (group != NULL);
603 if (context->main_group)
605 g_warning ("This GOptionContext already has a main group");
610 context->main_group = group;
614 * g_option_context_get_main_group:
615 * @context: a #GOptionContext
617 * Returns a pointer to the main group of @context.
619 * Returns: the main group of @context, or %NULL if @context doesn't
620 * have a main group. Note that group belongs to @context and should
621 * not be modified or freed.
626 g_option_context_get_main_group (GOptionContext *context)
628 g_return_val_if_fail (context != NULL, NULL);
630 return context->main_group;
634 * g_option_context_add_main_entries:
635 * @context: a #GOptionContext
636 * @entries: a %NULL-terminated array of #GOptionEntrys
637 * @translation_domain: (allow-none): a translation domain to use for translating
638 * the `--help` output for the options in @entries
639 * with gettext(), or %NULL
641 * A convenience function which creates a main group if it doesn't
642 * exist, adds the @entries to it and sets the translation domain.
647 g_option_context_add_main_entries (GOptionContext *context,
648 const GOptionEntry *entries,
649 const gchar *translation_domain)
651 g_return_if_fail (entries != NULL);
653 if (!context->main_group)
654 context->main_group = g_option_group_new (NULL, NULL, NULL, NULL, NULL);
656 g_option_group_add_entries (context->main_group, entries);
657 g_option_group_set_translation_domain (context->main_group, translation_domain);
661 calculate_max_length (GOptionGroup *group,
665 gint i, len, max_length;
666 const gchar *long_name;
670 for (i = 0; i < group->n_entries; i++)
672 entry = &group->entries[i];
674 if (entry->flags & G_OPTION_FLAG_HIDDEN)
677 long_name = g_hash_table_lookup (aliases, &entry->long_name);
679 long_name = entry->long_name;
680 len = _g_utf8_strwidth (long_name);
682 if (entry->short_name)
685 if (!NO_ARG (entry) && entry->arg_description)
686 len += 1 + _g_utf8_strwidth (TRANSLATE (group, entry->arg_description));
688 max_length = MAX (max_length, len);
695 print_entry (GOptionGroup *group,
697 const GOptionEntry *entry,
702 const gchar *long_name;
704 if (entry->flags & G_OPTION_FLAG_HIDDEN)
707 if (entry->long_name[0] == 0)
710 long_name = g_hash_table_lookup (aliases, &entry->long_name);
712 long_name = entry->long_name;
714 str = g_string_new (NULL);
716 if (entry->short_name)
717 g_string_append_printf (str, " -%c, --%s", entry->short_name, long_name);
719 g_string_append_printf (str, " --%s", long_name);
721 if (entry->arg_description)
722 g_string_append_printf (str, "=%s", TRANSLATE (group, entry->arg_description));
724 g_string_append_printf (string, "%s%*s %s\n", str->str,
725 (int) (max_length + 4 - _g_utf8_strwidth (str->str)), "",
726 entry->description ? TRANSLATE (group, entry->description) : "");
727 g_string_free (str, TRUE);
731 group_has_visible_entries (GOptionContext *context,
733 gboolean main_entries)
735 GOptionFlags reject_filter = G_OPTION_FLAG_HIDDEN;
738 gboolean main_group = group == context->main_group;
741 reject_filter |= G_OPTION_FLAG_IN_MAIN;
743 for (i = 0, l = (group ? group->n_entries : 0); i < l; i++)
745 entry = &group->entries[i];
747 if (main_entries && !main_group && !(entry->flags & G_OPTION_FLAG_IN_MAIN))
749 if (entry->long_name[0] == 0) /* ignore rest entry */
751 if (!(entry->flags & reject_filter))
759 group_list_has_visible_entries (GOptionContext *context,
761 gboolean main_entries)
765 if (group_has_visible_entries (context, group_list->data, main_entries))
768 group_list = group_list->next;
775 context_has_h_entry (GOptionContext *context)
780 if (context->main_group)
782 for (i = 0; i < context->main_group->n_entries; i++)
784 if (context->main_group->entries[i].short_name == 'h')
789 for (list = context->groups; list != NULL; list = g_list_next (list))
793 group = (GOptionGroup*)list->data;
794 for (i = 0; i < group->n_entries; i++)
796 if (group->entries[i].short_name == 'h')
804 * g_option_context_get_help:
805 * @context: a #GOptionContext
806 * @main_help: if %TRUE, only include the main group
807 * @group: (allow-none): the #GOptionGroup to create help for, or %NULL
809 * Returns a formatted, translated help text for the given context.
810 * To obtain the text produced by `--help`, call
811 * `g_option_context_get_help (context, TRUE, NULL)`.
812 * To obtain the text produced by `--help-all`, call
813 * `g_option_context_get_help (context, FALSE, NULL)`.
814 * To obtain the help text for an option group, call
815 * `g_option_context_get_help (context, FALSE, group)`.
817 * Returns: A newly allocated string containing the help text
822 g_option_context_get_help (GOptionContext *context,
827 gint max_length = 0, len;
830 GHashTable *shadow_map;
833 const gchar *rest_description;
837 string = g_string_sized_new (1024);
839 rest_description = NULL;
840 if (context->main_group)
843 for (i = 0; i < context->main_group->n_entries; i++)
845 entry = &context->main_group->entries[i];
846 if (entry->long_name[0] == 0)
848 rest_description = TRANSLATE (context->main_group, entry->arg_description);
854 g_string_append_printf (string, "%s\n %s %s",
855 _("Usage:"), g_get_prgname(), _("[OPTION...]"));
857 if (rest_description)
859 g_string_append (string, " ");
860 g_string_append (string, rest_description);
863 if (context->parameter_string)
865 g_string_append (string, " ");
866 g_string_append (string, TRANSLATE (context, context->parameter_string));
869 g_string_append (string, "\n\n");
871 if (context->summary)
873 g_string_append (string, TRANSLATE (context, context->summary));
874 g_string_append (string, "\n\n");
877 memset (seen, 0, sizeof (gboolean) * 256);
878 shadow_map = g_hash_table_new (g_str_hash, g_str_equal);
879 aliases = g_hash_table_new_full (NULL, NULL, NULL, g_free);
881 if (context->main_group)
883 for (i = 0; i < context->main_group->n_entries; i++)
885 entry = &context->main_group->entries[i];
886 g_hash_table_insert (shadow_map,
887 (gpointer)entry->long_name,
890 if (seen[(guchar)entry->short_name])
891 entry->short_name = 0;
893 seen[(guchar)entry->short_name] = TRUE;
897 list = context->groups;
900 GOptionGroup *g = list->data;
901 for (i = 0; i < g->n_entries; i++)
903 entry = &g->entries[i];
904 if (g_hash_table_lookup (shadow_map, entry->long_name) &&
905 !(entry->flags & G_OPTION_FLAG_NOALIAS))
907 g_hash_table_insert (aliases, &entry->long_name,
908 g_strdup_printf ("%s-%s", g->name, entry->long_name));
911 g_hash_table_insert (shadow_map, (gpointer)entry->long_name, entry);
913 if (seen[(guchar)entry->short_name] &&
914 !(entry->flags & G_OPTION_FLAG_NOALIAS))
915 entry->short_name = 0;
917 seen[(guchar)entry->short_name] = TRUE;
922 g_hash_table_destroy (shadow_map);
924 list = context->groups;
926 if (context->help_enabled)
928 max_length = _g_utf8_strwidth ("-?, --help");
932 len = _g_utf8_strwidth ("--help-all");
933 max_length = MAX (max_length, len);
937 if (context->main_group)
939 len = calculate_max_length (context->main_group, aliases);
940 max_length = MAX (max_length, len);
945 GOptionGroup *g = list->data;
947 if (context->help_enabled)
949 /* First, we check the --help-<groupname> options */
950 len = _g_utf8_strwidth ("--help-") + _g_utf8_strwidth (g->name);
951 max_length = MAX (max_length, len);
954 /* Then we go through the entries */
955 len = calculate_max_length (g, aliases);
956 max_length = MAX (max_length, len);
961 /* Add a bit of padding */
964 if (!group && context->help_enabled)
966 list = context->groups;
968 token = context_has_h_entry (context) ? '?' : 'h';
970 g_string_append_printf (string, "%s\n -%c, --%-*s %s\n",
971 _("Help Options:"), token, max_length - 4, "help",
972 _("Show help options"));
974 /* We only want --help-all when there are groups */
976 g_string_append_printf (string, " --%-*s %s\n",
977 max_length, "help-all",
978 _("Show all help options"));
982 GOptionGroup *g = list->data;
984 if (group_has_visible_entries (context, g, FALSE))
985 g_string_append_printf (string, " --help-%-*s %s\n",
986 max_length - 5, g->name,
987 TRANSLATE (g, g->help_description));
992 g_string_append (string, "\n");
997 /* Print a certain group */
999 if (group_has_visible_entries (context, group, FALSE))
1001 g_string_append (string, TRANSLATE (group, group->description));
1002 g_string_append (string, "\n");
1003 for (i = 0; i < group->n_entries; i++)
1004 print_entry (group, max_length, &group->entries[i], string, aliases);
1005 g_string_append (string, "\n");
1008 else if (!main_help)
1010 /* Print all groups */
1012 list = context->groups;
1016 GOptionGroup *g = list->data;
1018 if (group_has_visible_entries (context, g, FALSE))
1020 g_string_append (string, g->description);
1021 g_string_append (string, "\n");
1022 for (i = 0; i < g->n_entries; i++)
1023 if (!(g->entries[i].flags & G_OPTION_FLAG_IN_MAIN))
1024 print_entry (g, max_length, &g->entries[i], string, aliases);
1026 g_string_append (string, "\n");
1033 /* Print application options if --help or --help-all has been specified */
1034 if ((main_help || !group) &&
1035 (group_has_visible_entries (context, context->main_group, TRUE) ||
1036 group_list_has_visible_entries (context, context->groups, TRUE)))
1038 list = context->groups;
1040 g_string_append (string, _("Application Options:"));
1041 g_string_append (string, "\n");
1042 if (context->main_group)
1043 for (i = 0; i < context->main_group->n_entries; i++)
1044 print_entry (context->main_group, max_length,
1045 &context->main_group->entries[i], string, aliases);
1047 while (list != NULL)
1049 GOptionGroup *g = list->data;
1051 /* Print main entries from other groups */
1052 for (i = 0; i < g->n_entries; i++)
1053 if (g->entries[i].flags & G_OPTION_FLAG_IN_MAIN)
1054 print_entry (g, max_length, &g->entries[i], string, aliases);
1059 g_string_append (string, "\n");
1062 if (context->description)
1064 g_string_append (string, TRANSLATE (context, context->description));
1065 g_string_append (string, "\n");
1068 g_hash_table_destroy (aliases);
1070 return g_string_free (string, FALSE);
1075 print_help (GOptionContext *context,
1077 GOptionGroup *group)
1081 help = g_option_context_get_help (context, main_help, group);
1082 g_print ("%s", help);
1089 parse_int (const gchar *arg_name,
1098 tmp = strtol (arg, &end, 0);
1100 if (*arg == '\0' || *end != '\0')
1103 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1104 _("Cannot parse integer value '%s' for %s"),
1110 if (*result != tmp || errno == ERANGE)
1113 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1114 _("Integer value '%s' for %s out of range"),
1124 parse_double (const gchar *arg_name,
1133 tmp = g_strtod (arg, &end);
1135 if (*arg == '\0' || *end != '\0')
1138 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1139 _("Cannot parse double value '%s' for %s"),
1143 if (errno == ERANGE)
1146 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1147 _("Double value '%s' for %s out of range"),
1159 parse_int64 (const gchar *arg_name,
1168 tmp = g_ascii_strtoll (arg, &end, 0);
1170 if (*arg == '\0' || *end != '\0')
1173 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1174 _("Cannot parse integer value '%s' for %s"),
1178 if (errno == ERANGE)
1181 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1182 _("Integer value '%s' for %s out of range"),
1194 get_change (GOptionContext *context,
1195 GOptionArg arg_type,
1199 Change *change = NULL;
1201 for (list = context->changes; list != NULL; list = list->next)
1203 change = list->data;
1205 if (change->arg_data == arg_data)
1209 change = g_new0 (Change, 1);
1210 change->arg_type = arg_type;
1211 change->arg_data = arg_data;
1213 context->changes = g_list_prepend (context->changes, change);
1221 add_pending_null (GOptionContext *context,
1227 n = g_new0 (PendingNull, 1);
1231 context->pending_nulls = g_list_prepend (context->pending_nulls, n);
1235 parse_arg (GOptionContext *context,
1236 GOptionGroup *group,
1237 GOptionEntry *entry,
1239 const gchar *option_name,
1245 g_assert (value || OPTIONAL_ARG (entry) || NO_ARG (entry));
1249 case G_OPTION_ARG_NONE:
1251 (void) get_change (context, G_OPTION_ARG_NONE,
1254 *(gboolean *)entry->arg_data = !(entry->flags & G_OPTION_FLAG_REVERSE);
1257 case G_OPTION_ARG_STRING:
1262 if (!context->strv_mode)
1263 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1265 data = g_strdup (value);
1267 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1273 change = get_change (context, G_OPTION_ARG_STRING,
1275 g_free (change->allocated.str);
1277 change->prev.str = *(gchar **)entry->arg_data;
1278 change->allocated.str = data;
1280 *(gchar **)entry->arg_data = data;
1283 case G_OPTION_ARG_STRING_ARRAY:
1288 if (!context->strv_mode)
1289 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1291 data = g_strdup (value);
1293 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1299 change = get_change (context, G_OPTION_ARG_STRING_ARRAY,
1302 if (change->allocated.array.len == 0)
1304 change->prev.array = *(gchar ***)entry->arg_data;
1305 change->allocated.array.data = g_new (gchar *, 2);
1308 change->allocated.array.data =
1309 g_renew (gchar *, change->allocated.array.data,
1310 change->allocated.array.len + 2);
1312 change->allocated.array.data[change->allocated.array.len] = data;
1313 change->allocated.array.data[change->allocated.array.len + 1] = NULL;
1315 change->allocated.array.len ++;
1317 *(gchar ***)entry->arg_data = change->allocated.array.data;
1322 case G_OPTION_ARG_FILENAME:
1327 if (!context->strv_mode)
1328 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1330 data = g_strdup (value);
1335 data = g_strdup (value);
1337 change = get_change (context, G_OPTION_ARG_FILENAME,
1339 g_free (change->allocated.str);
1341 change->prev.str = *(gchar **)entry->arg_data;
1342 change->allocated.str = data;
1344 *(gchar **)entry->arg_data = data;
1348 case G_OPTION_ARG_FILENAME_ARRAY:
1353 if (!context->strv_mode)
1354 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1356 data = g_strdup (value);
1361 data = g_strdup (value);
1363 change = get_change (context, G_OPTION_ARG_STRING_ARRAY,
1366 if (change->allocated.array.len == 0)
1368 change->prev.array = *(gchar ***)entry->arg_data;
1369 change->allocated.array.data = g_new (gchar *, 2);
1372 change->allocated.array.data =
1373 g_renew (gchar *, change->allocated.array.data,
1374 change->allocated.array.len + 2);
1376 change->allocated.array.data[change->allocated.array.len] = data;
1377 change->allocated.array.data[change->allocated.array.len + 1] = NULL;
1379 change->allocated.array.len ++;
1381 *(gchar ***)entry->arg_data = change->allocated.array.data;
1386 case G_OPTION_ARG_INT:
1390 if (!parse_int (option_name, value,
1395 change = get_change (context, G_OPTION_ARG_INT,
1397 change->prev.integer = *(gint *)entry->arg_data;
1398 *(gint *)entry->arg_data = data;
1401 case G_OPTION_ARG_CALLBACK:
1406 if (!value && entry->flags & G_OPTION_FLAG_OPTIONAL_ARG)
1408 else if (entry->flags & G_OPTION_FLAG_NO_ARG)
1410 else if (entry->flags & G_OPTION_FLAG_FILENAME)
1413 if (!context->strv_mode)
1414 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1416 data = g_strdup (value);
1418 data = g_strdup (value);
1422 data = g_locale_to_utf8 (value, -1, NULL, NULL, error);
1424 if (!(entry->flags & (G_OPTION_FLAG_NO_ARG|G_OPTION_FLAG_OPTIONAL_ARG)) &&
1428 retval = (* (GOptionArgFunc) entry->arg_data) (option_name, data, group->user_data, error);
1430 if (!retval && error != NULL && *error == NULL)
1432 G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
1433 _("Error parsing option %s"), option_name);
1441 case G_OPTION_ARG_DOUBLE:
1445 if (!parse_double (option_name, value,
1452 change = get_change (context, G_OPTION_ARG_DOUBLE,
1454 change->prev.dbl = *(gdouble *)entry->arg_data;
1455 *(gdouble *)entry->arg_data = data;
1458 case G_OPTION_ARG_INT64:
1462 if (!parse_int64 (option_name, value,
1469 change = get_change (context, G_OPTION_ARG_INT64,
1471 change->prev.int64 = *(gint64 *)entry->arg_data;
1472 *(gint64 *)entry->arg_data = data;
1476 g_assert_not_reached ();
1483 parse_short_option (GOptionContext *context,
1484 GOptionGroup *group,
1495 for (j = 0; j < group->n_entries; j++)
1497 if (arg == group->entries[j].short_name)
1500 gchar *value = NULL;
1502 option_name = g_strdup_printf ("-%c", group->entries[j].short_name);
1504 if (NO_ARG (&group->entries[j]))
1511 G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
1512 _("Error parsing option %s"), option_name);
1513 g_free (option_name);
1517 if (idx < *argc - 1)
1519 if (!OPTIONAL_ARG (&group->entries[j]))
1521 value = (*argv)[idx + 1];
1522 add_pending_null (context, &((*argv)[idx + 1]), NULL);
1527 if ((*argv)[idx + 1][0] == '-')
1531 value = (*argv)[idx + 1];
1532 add_pending_null (context, &((*argv)[idx + 1]), NULL);
1537 else if (idx >= *argc - 1 && OPTIONAL_ARG (&group->entries[j]))
1542 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1543 _("Missing argument for %s"), option_name);
1544 g_free (option_name);
1549 if (!parse_arg (context, group, &group->entries[j],
1550 value, option_name, error))
1552 g_free (option_name);
1556 g_free (option_name);
1565 parse_long_option (GOptionContext *context,
1566 GOptionGroup *group,
1577 for (j = 0; j < group->n_entries; j++)
1582 if (aliased && (group->entries[j].flags & G_OPTION_FLAG_NOALIAS))
1585 if (NO_ARG (&group->entries[j]) &&
1586 strcmp (arg, group->entries[j].long_name) == 0)
1591 option_name = g_strconcat ("--", group->entries[j].long_name, NULL);
1592 retval = parse_arg (context, group, &group->entries[j],
1593 NULL, option_name, error);
1594 g_free (option_name);
1596 add_pending_null (context, &((*argv)[*idx]), NULL);
1603 gint len = strlen (group->entries[j].long_name);
1605 if (strncmp (arg, group->entries[j].long_name, len) == 0 &&
1606 (arg[len] == '=' || arg[len] == 0))
1608 gchar *value = NULL;
1611 add_pending_null (context, &((*argv)[*idx]), NULL);
1612 option_name = g_strconcat ("--", group->entries[j].long_name, NULL);
1614 if (arg[len] == '=')
1615 value = arg + len + 1;
1616 else if (*idx < *argc - 1)
1618 if (!OPTIONAL_ARG (&group->entries[j]))
1620 value = (*argv)[*idx + 1];
1621 add_pending_null (context, &((*argv)[*idx + 1]), NULL);
1626 if ((*argv)[*idx + 1][0] == '-')
1629 retval = parse_arg (context, group, &group->entries[j],
1630 NULL, option_name, error);
1632 g_free (option_name);
1637 value = (*argv)[*idx + 1];
1638 add_pending_null (context, &((*argv)[*idx + 1]), NULL);
1643 else if (*idx >= *argc - 1 && OPTIONAL_ARG (&group->entries[j]))
1646 retval = parse_arg (context, group, &group->entries[j],
1647 NULL, option_name, error);
1649 g_free (option_name);
1655 G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
1656 _("Missing argument for %s"), option_name);
1657 g_free (option_name);
1661 if (!parse_arg (context, group, &group->entries[j],
1662 value, option_name, error))
1664 g_free (option_name);
1668 g_free (option_name);
1678 parse_remaining_arg (GOptionContext *context,
1679 GOptionGroup *group,
1688 for (j = 0; j < group->n_entries; j++)
1693 if (group->entries[j].long_name[0])
1696 g_return_val_if_fail (group->entries[j].arg == G_OPTION_ARG_CALLBACK ||
1697 group->entries[j].arg == G_OPTION_ARG_STRING_ARRAY ||
1698 group->entries[j].arg == G_OPTION_ARG_FILENAME_ARRAY, FALSE);
1700 add_pending_null (context, &((*argv)[*idx]), NULL);
1702 if (!parse_arg (context, group, &group->entries[j], (*argv)[*idx], "", error))
1713 free_changes_list (GOptionContext *context,
1718 for (list = context->changes; list != NULL; list = list->next)
1720 Change *change = list->data;
1724 switch (change->arg_type)
1726 case G_OPTION_ARG_NONE:
1727 *(gboolean *)change->arg_data = change->prev.bool;
1729 case G_OPTION_ARG_INT:
1730 *(gint *)change->arg_data = change->prev.integer;
1732 case G_OPTION_ARG_STRING:
1733 case G_OPTION_ARG_FILENAME:
1734 g_free (change->allocated.str);
1735 *(gchar **)change->arg_data = change->prev.str;
1737 case G_OPTION_ARG_STRING_ARRAY:
1738 case G_OPTION_ARG_FILENAME_ARRAY:
1739 g_strfreev (change->allocated.array.data);
1740 *(gchar ***)change->arg_data = change->prev.array;
1742 case G_OPTION_ARG_DOUBLE:
1743 *(gdouble *)change->arg_data = change->prev.dbl;
1745 case G_OPTION_ARG_INT64:
1746 *(gint64 *)change->arg_data = change->prev.int64;
1749 g_assert_not_reached ();
1756 g_list_free (context->changes);
1757 context->changes = NULL;
1761 free_pending_nulls (GOptionContext *context,
1762 gboolean perform_nulls)
1766 for (list = context->pending_nulls; list != NULL; list = list->next)
1768 PendingNull *n = list->data;
1774 /* Copy back the short options */
1776 strcpy (*n->ptr + 1, n->value);
1780 if (context->strv_mode)
1791 g_list_free (context->pending_nulls);
1792 context->pending_nulls = NULL;
1795 /* Use a platform-specific mechanism to look up the first argument to
1796 * the current process.
1797 * Note if you implement this for other platforms, also add it to
1798 * tests/option-argv0.c
1801 platform_get_argv0 (void)
1808 if (!g_file_get_contents ("/proc/self/cmdline",
1813 /* Sanity check for a NUL terminator. */
1814 if (!memchr (cmdline, 0, len))
1816 /* We could just return cmdline, but I think it's better
1817 * to hold on to a smaller malloc block; the arguments
1820 base_arg0 = g_path_get_basename (cmdline);
1823 #elif defined __OpenBSD__
1828 int mib[] = { CTL_KERN, KERN_PROC_ARGS, getpid(), KERN_PROC_ARGV };
1830 if (sysctl (mib, G_N_ELEMENTS (mib), NULL, &len, NULL, 0) == -1)
1833 cmdline = g_malloc0 (len);
1835 if (sysctl (mib, G_N_ELEMENTS (mib), cmdline, &len, NULL, 0) == -1)
1841 /* We could just return cmdline, but I think it's better
1842 * to hold on to a smaller malloc block; the arguments
1845 base_arg0 = g_path_get_basename (*cmdline);
1854 * g_option_context_parse:
1855 * @context: a #GOptionContext
1856 * @argc: (inout) (allow-none): a pointer to the number of command line arguments
1857 * @argv: (inout) (array length=argc) (allow-none): a pointer to the array of command line arguments
1858 * @error: a return location for errors
1860 * Parses the command line arguments, recognizing options
1861 * which have been added to @context. A side-effect of
1862 * calling this function is that g_set_prgname() will be
1865 * If the parsing is successful, any parsed arguments are
1866 * removed from the array and @argc and @argv are updated
1867 * accordingly. A '--' option is stripped from @argv
1868 * unless there are unparsed options before and after it,
1869 * or some of the options after it start with '-'. In case
1870 * of an error, @argc and @argv are left unmodified.
1872 * If automatic `--help` support is enabled
1873 * (see g_option_context_set_help_enabled()), and the
1874 * @argv array contains one of the recognized help options,
1875 * this function will produce help output to stdout and
1878 * Note that function depends on the [current locale][setlocale] for
1879 * automatic character set conversion of string and filename
1882 * Returns: %TRUE if the parsing was successful,
1883 * %FALSE if an error occurred
1888 g_option_context_parse (GOptionContext *context,
1896 /* Set program name */
1897 if (!g_get_prgname())
1901 if (argc && argv && *argc)
1902 prgname = g_path_get_basename ((*argv)[0]);
1904 prgname = platform_get_argv0 ();
1907 g_set_prgname (prgname);
1909 g_set_prgname ("<unknown>");
1914 /* Call pre-parse hooks */
1915 list = context->groups;
1918 GOptionGroup *group = list->data;
1920 if (group->pre_parse_func)
1922 if (!(* group->pre_parse_func) (context, group,
1923 group->user_data, error))
1930 if (context->main_group && context->main_group->pre_parse_func)
1932 if (!(* context->main_group->pre_parse_func) (context, context->main_group,
1933 context->main_group->user_data, error))
1939 gboolean stop_parsing = FALSE;
1940 gboolean has_unknown = FALSE;
1941 gint separator_pos = 0;
1943 for (i = 1; i < *argc; i++)
1946 gboolean parsed = FALSE;
1948 if ((*argv)[i][0] == '-' && (*argv)[i][1] != '\0' && !stop_parsing)
1950 if ((*argv)[i][1] == '-')
1954 arg = (*argv)[i] + 2;
1956 /* '--' terminates list of arguments */
1960 stop_parsing = TRUE;
1964 /* Handle help options */
1965 if (context->help_enabled)
1967 if (strcmp (arg, "help") == 0)
1968 print_help (context, TRUE, NULL);
1969 else if (strcmp (arg, "help-all") == 0)
1970 print_help (context, FALSE, NULL);
1971 else if (strncmp (arg, "help-", 5) == 0)
1973 list = context->groups;
1977 GOptionGroup *group = list->data;
1979 if (strcmp (arg + 5, group->name) == 0)
1980 print_help (context, FALSE, group);
1987 if (context->main_group &&
1988 !parse_long_option (context, context->main_group, &i, arg,
1989 FALSE, argc, argv, error, &parsed))
1995 /* Try the groups */
1996 list = context->groups;
1999 GOptionGroup *group = list->data;
2001 if (!parse_long_option (context, group, &i, arg,
2002 FALSE, argc, argv, error, &parsed))
2014 /* Now look for --<group>-<option> */
2015 dash = strchr (arg, '-');
2018 /* Try the groups */
2019 list = context->groups;
2022 GOptionGroup *group = list->data;
2024 if (strncmp (group->name, arg, dash - arg) == 0)
2026 if (!parse_long_option (context, group, &i, dash + 1,
2027 TRUE, argc, argv, error, &parsed))
2038 if (context->ignore_unknown)
2042 { /* short option */
2043 gint new_i = i, arg_length;
2044 gboolean *nulled_out = NULL;
2045 gboolean has_h_entry = context_has_h_entry (context);
2046 arg = (*argv)[i] + 1;
2047 arg_length = strlen (arg);
2048 nulled_out = g_newa (gboolean, arg_length);
2049 memset (nulled_out, 0, arg_length * sizeof (gboolean));
2050 for (j = 0; j < arg_length; j++)
2052 if (context->help_enabled && (arg[j] == '?' ||
2053 (arg[j] == 'h' && !has_h_entry)))
2054 print_help (context, TRUE, NULL);
2056 if (context->main_group &&
2057 !parse_short_option (context, context->main_group,
2059 argc, argv, error, &parsed))
2063 /* Try the groups */
2064 list = context->groups;
2067 GOptionGroup *group = list->data;
2068 if (!parse_short_option (context, group, i, &new_i, arg[j],
2069 argc, argv, error, &parsed))
2077 if (context->ignore_unknown && parsed)
2078 nulled_out[j] = TRUE;
2079 else if (context->ignore_unknown)
2083 /* !context->ignore_unknown && parsed */
2085 if (context->ignore_unknown)
2087 gchar *new_arg = NULL;
2089 for (j = 0; j < arg_length; j++)
2094 new_arg = g_malloc (arg_length + 1);
2095 new_arg[arg_index++] = arg[j];
2099 new_arg[arg_index] = '\0';
2100 add_pending_null (context, &((*argv)[i]), new_arg);
2105 add_pending_null (context, &((*argv)[i]), NULL);
2113 if (!parsed && !context->ignore_unknown)
2116 G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
2117 _("Unknown option %s"), (*argv)[i]);
2123 if (context->strict_posix)
2124 stop_parsing = TRUE;
2126 /* Collect remaining args */
2127 if (context->main_group &&
2128 !parse_remaining_arg (context, context->main_group, &i,
2129 argc, argv, error, &parsed))
2132 if (!parsed && (has_unknown || (*argv)[i][0] == '-'))
2137 if (separator_pos > 0)
2138 add_pending_null (context, &((*argv)[separator_pos]), NULL);
2142 /* Call post-parse hooks */
2143 list = context->groups;
2146 GOptionGroup *group = list->data;
2148 if (group->post_parse_func)
2150 if (!(* group->post_parse_func) (context, group,
2151 group->user_data, error))
2158 if (context->main_group && context->main_group->post_parse_func)
2160 if (!(* context->main_group->post_parse_func) (context, context->main_group,
2161 context->main_group->user_data, error))
2167 free_pending_nulls (context, TRUE);
2169 for (i = 1; i < *argc; i++)
2171 for (k = i; k < *argc; k++)
2172 if ((*argv)[k] != NULL)
2178 for (j = i + k; j < *argc; j++)
2180 (*argv)[j-k] = (*argv)[j];
2192 /* Call error hooks */
2193 list = context->groups;
2196 GOptionGroup *group = list->data;
2198 if (group->error_func)
2199 (* group->error_func) (context, group,
2200 group->user_data, error);
2205 if (context->main_group && context->main_group->error_func)
2206 (* context->main_group->error_func) (context, context->main_group,
2207 context->main_group->user_data, error);
2209 free_changes_list (context, TRUE);
2210 free_pending_nulls (context, FALSE);
2216 * g_option_group_new:
2217 * @name: the name for the option group, this is used to provide
2218 * help for the options in this group with `--help-`@name
2219 * @description: a description for this group to be shown in
2220 * `--help`. This string is translated using the translation
2221 * domain or translation function of the group
2222 * @help_description: a description for the `--help-`@name option.
2223 * This string is translated using the translation domain or translation function
2225 * @user_data: (allow-none): user data that will be passed to the pre- and post-parse hooks,
2226 * the error hook and to callbacks of %G_OPTION_ARG_CALLBACK options, or %NULL
2227 * @destroy: (allow-none): a function that will be called to free @user_data, or %NULL
2229 * Creates a new #GOptionGroup.
2231 * Returns: a newly created option group. It should be added
2232 * to a #GOptionContext or freed with g_option_group_free().
2237 g_option_group_new (const gchar *name,
2238 const gchar *description,
2239 const gchar *help_description,
2241 GDestroyNotify destroy)
2244 GOptionGroup *group;
2246 group = g_new0 (GOptionGroup, 1);
2247 group->name = g_strdup (name);
2248 group->description = g_strdup (description);
2249 group->help_description = g_strdup (help_description);
2250 group->user_data = user_data;
2251 group->destroy_notify = destroy;
2258 * g_option_group_free:
2259 * @group: a #GOptionGroup
2261 * Frees a #GOptionGroup. Note that you must not free groups
2262 * which have been added to a #GOptionContext.
2267 g_option_group_free (GOptionGroup *group)
2269 g_return_if_fail (group != NULL);
2271 g_free (group->name);
2272 g_free (group->description);
2273 g_free (group->help_description);
2275 g_free (group->entries);
2277 if (group->destroy_notify)
2278 (* group->destroy_notify) (group->user_data);
2280 if (group->translate_notify)
2281 (* group->translate_notify) (group->translate_data);
2288 * g_option_group_add_entries:
2289 * @group: a #GOptionGroup
2290 * @entries: a %NULL-terminated array of #GOptionEntrys
2292 * Adds the options specified in @entries to @group.
2297 g_option_group_add_entries (GOptionGroup *group,
2298 const GOptionEntry *entries)
2302 g_return_if_fail (entries != NULL);
2304 for (n_entries = 0; entries[n_entries].long_name != NULL; n_entries++) ;
2306 group->entries = g_renew (GOptionEntry, group->entries, group->n_entries + n_entries);
2308 memcpy (group->entries + group->n_entries, entries, sizeof (GOptionEntry) * n_entries);
2310 for (i = group->n_entries; i < group->n_entries + n_entries; i++)
2312 gchar c = group->entries[i].short_name;
2314 if (c == '-' || (c != 0 && !g_ascii_isprint (c)))
2316 g_warning (G_STRLOC ": ignoring invalid short option '%c' (%d) in entry %s:%s",
2317 c, c, group->name, group->entries[i].long_name);
2318 group->entries[i].short_name = '\0';
2321 if (group->entries[i].arg != G_OPTION_ARG_NONE &&
2322 (group->entries[i].flags & G_OPTION_FLAG_REVERSE) != 0)
2324 g_warning (G_STRLOC ": ignoring reverse flag on option of arg-type %d in entry %s:%s",
2325 group->entries[i].arg, group->name, group->entries[i].long_name);
2327 group->entries[i].flags &= ~G_OPTION_FLAG_REVERSE;
2330 if (group->entries[i].arg != G_OPTION_ARG_CALLBACK &&
2331 (group->entries[i].flags & (G_OPTION_FLAG_NO_ARG|G_OPTION_FLAG_OPTIONAL_ARG|G_OPTION_FLAG_FILENAME)) != 0)
2333 g_warning (G_STRLOC ": ignoring no-arg, optional-arg or filename flags (%d) on option of arg-type %d in entry %s:%s",
2334 group->entries[i].flags, group->entries[i].arg, group->name, group->entries[i].long_name);
2336 group->entries[i].flags &= ~(G_OPTION_FLAG_NO_ARG|G_OPTION_FLAG_OPTIONAL_ARG|G_OPTION_FLAG_FILENAME);
2340 group->n_entries += n_entries;
2344 * g_option_group_set_parse_hooks:
2345 * @group: a #GOptionGroup
2346 * @pre_parse_func: (allow-none): a function to call before parsing, or %NULL
2347 * @post_parse_func: (allow-none): a function to call after parsing, or %NULL
2349 * Associates two functions with @group which will be called
2350 * from g_option_context_parse() before the first option is parsed
2351 * and after the last option has been parsed, respectively.
2353 * Note that the user data to be passed to @pre_parse_func and
2354 * @post_parse_func can be specified when constructing the group
2355 * with g_option_group_new().
2360 g_option_group_set_parse_hooks (GOptionGroup *group,
2361 GOptionParseFunc pre_parse_func,
2362 GOptionParseFunc post_parse_func)
2364 g_return_if_fail (group != NULL);
2366 group->pre_parse_func = pre_parse_func;
2367 group->post_parse_func = post_parse_func;
2371 * g_option_group_set_error_hook:
2372 * @group: a #GOptionGroup
2373 * @error_func: a function to call when an error occurs
2375 * Associates a function with @group which will be called
2376 * from g_option_context_parse() when an error occurs.
2378 * Note that the user data to be passed to @error_func can be
2379 * specified when constructing the group with g_option_group_new().
2384 g_option_group_set_error_hook (GOptionGroup *group,
2385 GOptionErrorFunc error_func)
2387 g_return_if_fail (group != NULL);
2389 group->error_func = error_func;
2394 * g_option_group_set_translate_func:
2395 * @group: a #GOptionGroup
2396 * @func: (allow-none): the #GTranslateFunc, or %NULL
2397 * @data: (allow-none): user data to pass to @func, or %NULL
2398 * @destroy_notify: (allow-none): a function which gets called to free @data, or %NULL
2400 * Sets the function which is used to translate user-visible strings,
2401 * for `--help` output. Different groups can use different
2402 * #GTranslateFuncs. If @func is %NULL, strings are not translated.
2404 * If you are using gettext(), you only need to set the translation
2405 * domain, see g_option_group_set_translation_domain().
2410 g_option_group_set_translate_func (GOptionGroup *group,
2411 GTranslateFunc func,
2413 GDestroyNotify destroy_notify)
2415 g_return_if_fail (group != NULL);
2417 if (group->translate_notify)
2418 group->translate_notify (group->translate_data);
2420 group->translate_func = func;
2421 group->translate_data = data;
2422 group->translate_notify = destroy_notify;
2425 static const gchar *
2426 dgettext_swapped (const gchar *msgid,
2427 const gchar *domainname)
2429 return g_dgettext (domainname, msgid);
2433 * g_option_group_set_translation_domain:
2434 * @group: a #GOptionGroup
2435 * @domain: the domain to use
2437 * A convenience function to use gettext() for translating
2438 * user-visible strings.
2443 g_option_group_set_translation_domain (GOptionGroup *group,
2444 const gchar *domain)
2446 g_return_if_fail (group != NULL);
2448 g_option_group_set_translate_func (group,
2449 (GTranslateFunc)dgettext_swapped,
2455 * g_option_context_set_translate_func:
2456 * @context: a #GOptionContext
2457 * @func: (allow-none): the #GTranslateFunc, or %NULL
2458 * @data: (allow-none): user data to pass to @func, or %NULL
2459 * @destroy_notify: (allow-none): a function which gets called to free @data, or %NULL
2461 * Sets the function which is used to translate the contexts
2462 * user-visible strings, for `--help` output. If @func is %NULL,
2463 * strings are not translated.
2465 * Note that option groups have their own translation functions,
2466 * this function only affects the @parameter_string (see g_option_context_new()),
2467 * the summary (see g_option_context_set_summary()) and the description
2468 * (see g_option_context_set_description()).
2470 * If you are using gettext(), you only need to set the translation
2471 * domain, see g_option_context_set_translation_domain().
2476 g_option_context_set_translate_func (GOptionContext *context,
2477 GTranslateFunc func,
2479 GDestroyNotify destroy_notify)
2481 g_return_if_fail (context != NULL);
2483 if (context->translate_notify)
2484 context->translate_notify (context->translate_data);
2486 context->translate_func = func;
2487 context->translate_data = data;
2488 context->translate_notify = destroy_notify;
2492 * g_option_context_set_translation_domain:
2493 * @context: a #GOptionContext
2494 * @domain: the domain to use
2496 * A convenience function to use gettext() for translating
2497 * user-visible strings.
2502 g_option_context_set_translation_domain (GOptionContext *context,
2503 const gchar *domain)
2505 g_return_if_fail (context != NULL);
2507 g_option_context_set_translate_func (context,
2508 (GTranslateFunc)dgettext_swapped,
2514 * g_option_context_set_summary:
2515 * @context: a #GOptionContext
2516 * @summary: (allow-none): a string to be shown in `--help` output
2517 * before the list of options, or %NULL
2519 * Adds a string to be displayed in `--help` output before the list
2520 * of options. This is typically a summary of the program functionality.
2522 * Note that the summary is translated (see
2523 * g_option_context_set_translate_func() and
2524 * g_option_context_set_translation_domain()).
2529 g_option_context_set_summary (GOptionContext *context,
2530 const gchar *summary)
2532 g_return_if_fail (context != NULL);
2534 g_free (context->summary);
2535 context->summary = g_strdup (summary);
2540 * g_option_context_get_summary:
2541 * @context: a #GOptionContext
2543 * Returns the summary. See g_option_context_set_summary().
2545 * Returns: the summary
2550 g_option_context_get_summary (GOptionContext *context)
2552 g_return_val_if_fail (context != NULL, NULL);
2554 return context->summary;
2558 * g_option_context_set_description:
2559 * @context: a #GOptionContext
2560 * @description: (allow-none): a string to be shown in `--help` output
2561 * after the list of options, or %NULL
2563 * Adds a string to be displayed in `--help` output after the list
2564 * of options. This text often includes a bug reporting address.
2566 * Note that the summary is translated (see
2567 * g_option_context_set_translate_func()).
2572 g_option_context_set_description (GOptionContext *context,
2573 const gchar *description)
2575 g_return_if_fail (context != NULL);
2577 g_free (context->description);
2578 context->description = g_strdup (description);
2583 * g_option_context_get_description:
2584 * @context: a #GOptionContext
2586 * Returns the description. See g_option_context_set_description().
2588 * Returns: the description
2593 g_option_context_get_description (GOptionContext *context)
2595 g_return_val_if_fail (context != NULL, NULL);
2597 return context->description;
2601 * g_option_context_parse_strv:
2602 * @context: a #GOptionContext
2603 * @arguments: (inout) (array null-terminated=1): a pointer to the
2604 * command line arguments (which must be in UTF-8 on Windows)
2605 * @error: a return location for errors
2607 * Parses the command line arguments.
2609 * This function is similar to g_option_context_parse() except that it
2610 * respects the normal memory rules when dealing with a strv instead of
2611 * assuming that the passed-in array is the argv of the main function.
2613 * In particular, strings that are removed from the arguments list will
2614 * be freed using g_free().
2616 * On Windows, the strings are expected to be in UTF-8. This is in
2617 * contrast to g_option_context_parse() which expects them to be in the
2618 * system codepage, which is how they are passed as @argv to main().
2619 * See g_win32_get_command_line() for a solution.
2621 * This function is useful if you are trying to use #GOptionContext with
2624 * Returns: %TRUE if the parsing was successful,
2625 * %FALSE if an error occurred
2630 g_option_context_parse_strv (GOptionContext *context,
2637 context->strv_mode = TRUE;
2638 argc = g_strv_length (*arguments);
2639 success = g_option_context_parse (context, &argc, arguments, error);
2640 context->strv_mode = FALSE;