| /* goption.h - Option parser |
| * |
| * Copyright (C) 2004 Anders Carlsson <andersca@gnome.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| */ |
| |
| #ifndef __G_OPTION_H__ |
| #define __G_OPTION_H__ |
| |
| #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
| #error "Only <glib.h> can be included directly." |
| #endif |
| |
| #include <glib/gerror.h> |
| #include <glib/gquark.h> |
| |
| G_BEGIN_DECLS |
| |
| /** |
| * GOptionContext: |
| * |
| * A <structname>GOptionContext</structname> struct defines which options |
| * are accepted by the commandline option parser. The struct has only private |
| * fields and should not be directly accessed. |
| */ |
| typedef struct _GOptionContext GOptionContext; |
| |
| /** |
| * GOptionGroup: |
| * |
| * A <structname>GOptionGroup</structname> struct defines the options in a single |
| * group. The struct has only private fields and should not be directly accessed. |
| * |
| * All options in a group share the same translation function. Libraries which |
| * need to parse commandline options are expected to provide a function for |
| * getting a <structname>GOptionGroup</structname> holding their options, which |
| * the application can then add to its #GOptionContext. |
| */ |
| typedef struct _GOptionGroup GOptionGroup; |
| typedef struct _GOptionEntry GOptionEntry; |
| |
| /** |
| * GOptionFlags: |
| * @G_OPTION_FLAG_HIDDEN: The option doesn't appear in <option>--help</option> |
| * output. |
| * @G_OPTION_FLAG_IN_MAIN: The option appears in the main section of the |
| * <option>--help</option> output, even if it is defined in a group. |
| * @G_OPTION_FLAG_REVERSE: For options of the %G_OPTION_ARG_NONE kind, this flag |
| * indicates that the sense of the option is reversed. |
| * @G_OPTION_FLAG_NO_ARG: For options of the %G_OPTION_ARG_CALLBACK kind, |
| * this flag indicates that the callback does not take any argument |
| * (like a %G_OPTION_ARG_NONE option). Since 2.8 |
| * @G_OPTION_FLAG_FILENAME: For options of the %G_OPTION_ARG_CALLBACK |
| * kind, this flag indicates that the argument should be passed to the |
| * callback in the GLib filename encoding rather than UTF-8. Since 2.8 |
| * @G_OPTION_FLAG_OPTIONAL_ARG: For options of the %G_OPTION_ARG_CALLBACK |
| * kind, this flag indicates that the argument supply is optional. If no argument |
| * is given then data of %GOptionParseFunc will be set to NULL. Since 2.8 |
| * @G_OPTION_FLAG_NOALIAS: This flag turns off the automatic conflict resolution |
| * which prefixes long option names with <literal>groupname-</literal> if |
| * there is a conflict. This option should only be used in situations where |
| * aliasing is necessary to model some legacy commandline interface. It is |
| * not safe to use this option, unless all option groups are under your |
| * direct control. Since 2.8. |
| * |
| * Flags which modify individual options. |
| */ |
| typedef enum |
| { |
| G_OPTION_FLAG_HIDDEN = 1 << 0, |
| G_OPTION_FLAG_IN_MAIN = 1 << 1, |
| G_OPTION_FLAG_REVERSE = 1 << 2, |
| G_OPTION_FLAG_NO_ARG = 1 << 3, |
| G_OPTION_FLAG_FILENAME = 1 << 4, |
| G_OPTION_FLAG_OPTIONAL_ARG = 1 << 5, |
| G_OPTION_FLAG_NOALIAS = 1 << 6 |
| } GOptionFlags; |
| |
| /** |
| * GOptionArg: |
| * @G_OPTION_ARG_NONE: No extra argument. This is useful for simple flags. |
| * @G_OPTION_ARG_STRING: The option takes a string argument. |
| * @G_OPTION_ARG_INT: The option takes an integer argument. |
| * @G_OPTION_ARG_CALLBACK: The option provides a callback to parse the |
| * extra argument. |
| * @G_OPTION_ARG_FILENAME: The option takes a filename as argument. |
| * @G_OPTION_ARG_STRING_ARRAY: The option takes a string argument, multiple |
| * uses of the option are collected into an array of strings. |
| * @G_OPTION_ARG_FILENAME_ARRAY: The option takes a filename as argument, |
| * multiple uses of the option are collected into an array of strings. |
| * @G_OPTION_ARG_DOUBLE: The option takes a double argument. The argument |
| * can be formatted either for the user's locale or for the "C" locale. Since 2.12 |
| * @G_OPTION_ARG_INT64: The option takes a 64-bit integer. Like %G_OPTION_ARG_INT |
| * but for larger numbers. The number can be in decimal base, or in hexadecimal |
| * (when prefixed with <literal>0x</literal>, for example, <literal>0xffffffff</literal>). |
| * Since 2.12 |
| * |
| * The #GOptionArg enum values determine which type of extra argument the |
| * options expect to find. If an option expects an extra argument, it |
| * can be specified in several ways; with a short option: |
| * <option>-x arg</option>, with a long option: <option>--name arg</option> |
| * or combined in a single argument: <option>--name=arg</option>. |
| */ |
| typedef enum |
| { |
| G_OPTION_ARG_NONE, |
| G_OPTION_ARG_STRING, |
| G_OPTION_ARG_INT, |
| G_OPTION_ARG_CALLBACK, |
| G_OPTION_ARG_FILENAME, |
| G_OPTION_ARG_STRING_ARRAY, |
| G_OPTION_ARG_FILENAME_ARRAY, |
| G_OPTION_ARG_DOUBLE, |
| G_OPTION_ARG_INT64 |
| } GOptionArg; |
| |
| /** |
| * GOptionArgFunc: |
| * @option_name: The name of the option being parsed. This will be either a |
| * single dash followed by a single letter (for a short name) or two dashes |
| * followed by a long option name. |
| * @value: The value to be parsed. |
| * @data: User data added to the #GOptionGroup containing the option when it |
| * was created with g_option_group_new() |
| * @error: A return location for errors. The error code %G_OPTION_ERROR_FAILED |
| * is intended to be used for errors in #GOptionArgFunc callbacks. |
| * |
| * The type of function to be passed as callback for %G_OPTION_ARG_CALLBACK |
| * options. |
| * |
| * Returns: %TRUE if the option was successfully parsed, %FALSE if an error |
| * occurred, in which case @error should be set with g_set_error() |
| */ |
| typedef gboolean (*GOptionArgFunc) (const gchar *option_name, |
| const gchar *value, |
| gpointer data, |
| GError **error); |
| |
| /** |
| * GOptionParseFunc: |
| * @context: The active #GOptionContext |
| * @group: The group to which the function belongs |
| * @data: User data added to the #GOptionGroup containing the option when it |
| * was created with g_option_group_new() |
| * @error: A return location for error details |
| * |
| * The type of function that can be called before and after parsing. |
| * |
| * Returns: %TRUE if the function completed successfully, %FALSE if an error |
| * occurred, in which case @error should be set with g_set_error() |
| */ |
| typedef gboolean (*GOptionParseFunc) (GOptionContext *context, |
| GOptionGroup *group, |
| gpointer data, |
| GError **error); |
| |
| /** |
| * GOptionErrorFunc: |
| * @context: The active #GOptionContext |
| * @group: The group to which the function belongs |
| * @data: User data added to the #GOptionGroup containing the option when it |
| * was created with g_option_group_new() |
| * @error: The #GError containing details about the parse error |
| * |
| * The type of function to be used as callback when a parse error occurs. |
| */ |
| typedef void (*GOptionErrorFunc) (GOptionContext *context, |
| GOptionGroup *group, |
| gpointer data, |
| GError **error); |
| |
| /** |
| * G_OPTION_ERROR: |
| * |
| * Error domain for option parsing. Errors in this domain will |
| * be from the #GOptionError enumeration. See #GError for information on |
| * error domains. |
| */ |
| #define G_OPTION_ERROR (g_option_error_quark ()) |
| |
| /** |
| * GOptionError: |
| * @G_OPTION_ERROR_UNKNOWN_OPTION: An option was not known to the parser. |
| * This error will only be reported, if the parser hasn't been instructed |
| * to ignore unknown options, see g_option_context_set_ignore_unknown_options(). |
| * @G_OPTION_ERROR_BAD_VALUE: A value couldn't be parsed. |
| * @G_OPTION_ERROR_FAILED: A #GOptionArgFunc callback failed. |
| * |
| * Error codes returned by option parsing. |
| */ |
| typedef enum |
| { |
| G_OPTION_ERROR_UNKNOWN_OPTION, |
| G_OPTION_ERROR_BAD_VALUE, |
| G_OPTION_ERROR_FAILED |
| } GOptionError; |
| |
| GLIB_AVAILABLE_IN_ALL |
| GQuark g_option_error_quark (void); |
| |
| /** |
| * GOptionEntry: |
| * @long_name: The long name of an option can be used to specify it |
| * in a commandline as --<replaceable>long_name</replaceable>. Every |
| * option must have a long name. To resolve conflicts if multiple |
| * option groups contain the same long name, it is also possible to |
| * specify the option as |
| * --<replaceable>groupname</replaceable>-<replaceable>long_name</replaceable>. |
| * @short_name: If an option has a short name, it can be specified |
| * -<replaceable>short_name</replaceable> in a commandline. @short_name must be |
| * a printable ASCII character different from '-', or zero if the option has no |
| * short name. |
| * @flags: Flags from #GOptionFlags. |
| * @arg: The type of the option, as a #GOptionArg. |
| * @arg_data: If the @arg type is %G_OPTION_ARG_CALLBACK, then @arg_data must |
| * point to a #GOptionArgFunc callback function, which will be called to handle |
| * the extra argument. Otherwise, @arg_data is a pointer to a location to store |
| * the value, the required type of the location depends on the @arg type: |
| * <variablelist> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_NONE</term> |
| * <listitem><para>%gboolean</para></listitem> |
| * </varlistentry> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_STRING</term> |
| * <listitem><para>%gchar*</para></listitem> |
| * </varlistentry> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_INT</term> |
| * <listitem><para>%gint</para></listitem> |
| * </varlistentry> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_FILENAME</term> |
| * <listitem><para>%gchar*</para></listitem> |
| * </varlistentry> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_STRING_ARRAY</term> |
| * <listitem><para>%gchar**</para></listitem> |
| * </varlistentry> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_FILENAME_ARRAY</term> |
| * <listitem><para>%gchar**</para></listitem> |
| * </varlistentry> |
| * <varlistentry> |
| * <term>%G_OPTION_ARG_DOUBLE</term> |
| * <listitem><para>%gdouble</para></listitem> |
| * </varlistentry> |
| * </variablelist> |
| * If @arg type is %G_OPTION_ARG_STRING or %G_OPTION_ARG_FILENAME the location |
| * will contain a newly allocated string if the option was given. That string |
| * needs to be freed by the callee using g_free(). Likewise if @arg type is |
| * %G_OPTION_ARG_STRING_ARRAY or %G_OPTION_ARG_FILENAME_ARRAY, the data should |
| * be freed using g_strfreev(). |
| * @description: the description for the option in <option>--help</option> |
| * output. The @description is translated using the @translate_func of the |
| * group, see g_option_group_set_translation_domain(). |
| * @arg_description: The placeholder to use for the extra argument parsed |
| * by the option in <option>--help</option> |
| * output. The @arg_description is translated using the @translate_func of the |
| * group, see g_option_group_set_translation_domain(). |
| * |
| * A <structname>GOptionEntry</structname> defines a single option. |
| * To have an effect, they must be added to a #GOptionGroup with |
| * g_option_context_add_main_entries() or g_option_group_add_entries(). |
| */ |
| struct _GOptionEntry |
| { |
| const gchar *long_name; |
| gchar short_name; |
| gint flags; |
| |
| GOptionArg arg; |
| gpointer arg_data; |
| |
| const gchar *description; |
| const gchar *arg_description; |
| }; |
| |
| /** |
| * G_OPTION_REMAINING: |
| * |
| * If a long option in the main group has this name, it is not treated as a |
| * regular option. Instead it collects all non-option arguments which would |
| * otherwise be left in <literal>argv</literal>. The option must be of type |
| * %G_OPTION_ARG_CALLBACK, %G_OPTION_ARG_STRING_ARRAY |
| * or %G_OPTION_ARG_FILENAME_ARRAY. |
| * |
| * |
| * Using #G_OPTION_REMAINING instead of simply scanning <literal>argv</literal> |
| * for leftover arguments has the advantage that GOption takes care of |
| * necessary encoding conversions for strings or filenames. |
| * |
| * Since: 2.6 |
| */ |
| #define G_OPTION_REMAINING "" |
| |
| GLIB_AVAILABLE_IN_ALL |
| GOptionContext *g_option_context_new (const gchar *parameter_string); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_summary (GOptionContext *context, |
| const gchar *summary); |
| GLIB_AVAILABLE_IN_ALL |
| const gchar * g_option_context_get_summary (GOptionContext *context); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_description (GOptionContext *context, |
| const gchar *description); |
| GLIB_AVAILABLE_IN_ALL |
| const gchar * g_option_context_get_description (GOptionContext *context); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_free (GOptionContext *context); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_help_enabled (GOptionContext *context, |
| gboolean help_enabled); |
| GLIB_AVAILABLE_IN_ALL |
| gboolean g_option_context_get_help_enabled (GOptionContext *context); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_ignore_unknown_options (GOptionContext *context, |
| gboolean ignore_unknown); |
| GLIB_AVAILABLE_IN_ALL |
| gboolean g_option_context_get_ignore_unknown_options (GOptionContext *context); |
| |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_add_main_entries (GOptionContext *context, |
| const GOptionEntry *entries, |
| const gchar *translation_domain); |
| GLIB_AVAILABLE_IN_ALL |
| gboolean g_option_context_parse (GOptionContext *context, |
| gint *argc, |
| gchar ***argv, |
| GError **error); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_translate_func (GOptionContext *context, |
| GTranslateFunc func, |
| gpointer data, |
| GDestroyNotify destroy_notify); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_translation_domain (GOptionContext *context, |
| const gchar *domain); |
| |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_add_group (GOptionContext *context, |
| GOptionGroup *group); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_context_set_main_group (GOptionContext *context, |
| GOptionGroup *group); |
| GLIB_AVAILABLE_IN_ALL |
| GOptionGroup *g_option_context_get_main_group (GOptionContext *context); |
| GLIB_AVAILABLE_IN_ALL |
| gchar *g_option_context_get_help (GOptionContext *context, |
| gboolean main_help, |
| GOptionGroup *group); |
| |
| GLIB_AVAILABLE_IN_ALL |
| GOptionGroup *g_option_group_new (const gchar *name, |
| const gchar *description, |
| const gchar *help_description, |
| gpointer user_data, |
| GDestroyNotify destroy); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_group_set_parse_hooks (GOptionGroup *group, |
| GOptionParseFunc pre_parse_func, |
| GOptionParseFunc post_parse_func); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_group_set_error_hook (GOptionGroup *group, |
| GOptionErrorFunc error_func); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_group_free (GOptionGroup *group); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_group_add_entries (GOptionGroup *group, |
| const GOptionEntry *entries); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_group_set_translate_func (GOptionGroup *group, |
| GTranslateFunc func, |
| gpointer data, |
| GDestroyNotify destroy_notify); |
| GLIB_AVAILABLE_IN_ALL |
| void g_option_group_set_translation_domain (GOptionGroup *group, |
| const gchar *domain); |
| |
| G_END_DECLS |
| |
| #endif /* __G_OPTION_H__ */ |
