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https://gitlab.gnome.org/GNOME/glib.git
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0f95b18a7b
All uses of g_variant_builder_init() in gio are safe to translate to the new g_variant_builder_init_static() alternative as the type will outlive the call to g_variant_builder_end() (or is already static in nature).
477 lines
12 KiB
C
477 lines
12 KiB
C
/*
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* Copyright © 2013 Canonical Limited
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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#include "config.h"
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#include <gio/gdesktopappinfo.h>
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#include <glib/gi18n.h>
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#include <gio/gio.h>
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#include <string.h>
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#include <locale.h>
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struct help_topic
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{
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const gchar *command;
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const gchar *summary;
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const gchar *description;
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const gchar *synopsis;
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};
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struct help_substvar
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{
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const gchar *var;
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const gchar *description;
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};
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static const struct help_topic topics[] = {
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{ "help", N_("Print help"),
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N_("Print help"),
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N_("[COMMAND]")
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},
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{ "version", N_("Print version"),
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N_("Print version information and exit"),
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NULL
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},
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{ "list-apps", N_("List applications"),
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N_("List the installed D-Bus activatable applications (by .desktop files)"),
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NULL
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},
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{ "launch", N_("Launch an application"),
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N_("Launch the application (with optional files to open)"),
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N_("APPID [FILE…]")
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},
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{ "action", N_("Activate an action"),
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N_("Invoke an action on the application"),
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N_("APPID ACTION [PARAMETER]")
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},
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{ "list-actions", N_("List available actions"),
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N_("List static actions for an application (from .desktop file)"),
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N_("APPID")
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}
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};
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static const struct help_substvar substvars[] = {
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{ N_("COMMAND"), N_("The command to print detailed help for") },
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{ N_("APPID"), N_("Application identifier in D-Bus format (eg: org.example.viewer)") },
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{ N_("FILE"), N_("Optional relative or absolute filenames, or URIs to open") },
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{ N_("ACTION"), N_("The action name to invoke") },
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{ N_("PARAMETER"), N_("Optional parameter to the action invocation, in GVariant format") }
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};
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static int
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app_help (gboolean requested,
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const gchar *command)
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{
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const struct help_topic *topic = NULL;
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GString *string;
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string = g_string_new (NULL);
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if (command)
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{
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gsize i;
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for (i = 0; i < G_N_ELEMENTS (topics); i++)
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if (g_str_equal (topics[i].command, command))
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topic = &topics[i];
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if (!topic)
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{
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g_string_printf (string, _("Unknown command %s\n\n"), command);
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requested = FALSE;
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}
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}
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g_string_append (string, _("Usage:\n"));
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if (topic)
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{
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guint maxwidth;
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gsize i;
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g_string_append_printf (string, "\n %s %s %s\n\n", "gapplication",
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topic->command, topic->synopsis ? _(topic->synopsis) : "");
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g_string_append_printf (string, "%s\n\n", _(topic->description));
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if (topic->synopsis)
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{
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g_string_append (string, _("Arguments:\n"));
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maxwidth = 0;
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for (i = 0; i < G_N_ELEMENTS (substvars); i++)
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if (strstr (topic->synopsis, substvars[i].var))
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maxwidth = MAX(maxwidth, strlen (_(substvars[i].var)));
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for (i = 0; i < G_N_ELEMENTS (substvars); i++)
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if (strstr (topic->synopsis, substvars[i].var))
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g_string_append_printf (string, " %-*.*s %s\n", maxwidth, maxwidth,
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_(substvars[i].var), _(substvars[i].description));
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g_string_append (string, "\n");
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}
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}
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else
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{
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guint maxwidth;
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gsize i;
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g_string_append_printf (string, "\n %s %s %s\n\n", "gapplication", _("COMMAND"), _("[ARGS…]"));
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g_string_append_printf (string, _("Commands:\n"));
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maxwidth = 0;
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for (i = 0; i < G_N_ELEMENTS (topics); i++)
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maxwidth = MAX(maxwidth, strlen (topics[i].command));
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for (i = 0; i < G_N_ELEMENTS (topics); i++)
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g_string_append_printf (string, " %-*.*s %s\n", maxwidth, maxwidth,
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topics[i].command, _(topics[i].summary));
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g_string_append (string, "\n");
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/* Translators: do not translate 'help', but please translate 'COMMAND'. */
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g_string_append_printf (string, _("Use “%s help COMMAND” to get detailed help.\n\n"), "gapplication");
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}
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if (requested)
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g_print ("%s", string->str);
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else
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g_printerr ("%s\n", string->str);
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g_string_free (string, TRUE);
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return requested ? 0 : 1;
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}
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static gboolean
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app_check_name (gchar **args,
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const gchar *command)
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{
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if (args[0] == NULL)
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{
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g_printerr (_("%s command requires an application id to directly follow\n\n"), command);
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return FALSE;
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}
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if (!g_dbus_is_name (args[0]))
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{
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g_printerr (_("invalid application id: “%s”\n"), args[0]);
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return FALSE;
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}
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return TRUE;
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}
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static int
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app_no_args (const gchar *command)
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{
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/* Translators: %s is replaced with a command name like 'list-actions' */
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g_printerr (_("“%s” takes no arguments\n\n"), command);
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return app_help (FALSE, command);
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}
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static int
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app_version (gchar **args)
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{
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if (g_strv_length (args))
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return app_no_args ("version");
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g_print (PACKAGE_VERSION "\n");
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return 0;
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}
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static int
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app_list (gchar **args)
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{
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GList *apps;
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if (g_strv_length (args))
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return app_no_args ("list");
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apps = g_app_info_get_all ();
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while (apps)
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{
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GDesktopAppInfo *info = apps->data;
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if (G_IS_DESKTOP_APP_INFO (info))
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if (g_desktop_app_info_get_boolean (info, "DBusActivatable"))
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{
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const gchar *filename;
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filename = g_app_info_get_id (G_APP_INFO (info));
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if (g_str_has_suffix (filename, ".desktop"))
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{
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gchar *id;
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id = g_strndup (filename, strlen (filename) - 8);
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g_print ("%s\n", id);
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g_free (id);
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}
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}
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apps = g_list_delete_link (apps, apps);
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g_object_unref (info);
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}
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return 0;
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}
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static gchar *
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app_path_for_id (const gchar *app_id)
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{
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gchar *path;
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gint i;
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path = g_strconcat ("/", app_id, NULL);
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for (i = 0; path[i]; i++)
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{
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if (path[i] == '.')
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path[i] = '/';
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if (path[i] == '-')
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path[i] = '_';
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}
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return path;
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}
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static int
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app_call (const gchar *app_id,
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const gchar *method_name,
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GVariant *parameters)
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{
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GDBusConnection *session;
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GError *error = NULL;
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gchar *object_path;
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GVariant *result;
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session = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
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if (!session)
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{
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g_variant_unref (g_variant_ref_sink (parameters));
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g_printerr (_("unable to connect to D-Bus: %s\n"), error->message);
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g_error_free (error);
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return 1;
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}
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object_path = app_path_for_id (app_id);
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result = g_dbus_connection_call_sync (session, app_id, object_path, "org.freedesktop.Application",
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method_name, parameters, G_VARIANT_TYPE_UNIT,
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G_DBUS_CALL_FLAGS_NONE, -1, NULL, &error);
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g_free (object_path);
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if (result)
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{
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g_variant_unref (result);
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return 0;
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}
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else
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{
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g_printerr (_("error sending %s message to application: %s\n"), method_name, error->message);
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g_error_free (error);
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return 1;
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}
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}
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static GVariant *
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app_get_platform_data (void)
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{
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GVariantBuilder builder;
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const gchar *startup_id;
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g_variant_builder_init_static (&builder, G_VARIANT_TYPE_VARDICT);
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if ((startup_id = g_getenv ("DESKTOP_STARTUP_ID")))
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g_variant_builder_add (&builder, "{sv}", "desktop-startup-id", g_variant_new_string (startup_id));
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if ((startup_id = g_getenv ("XDG_ACTIVATION_TOKEN")))
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g_variant_builder_add (&builder, "{sv}", "activation-token", g_variant_new_string (startup_id));
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return g_variant_builder_end (&builder);
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}
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static int
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app_action (gchar **args)
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{
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GVariantBuilder params;
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const gchar *name;
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if (!app_check_name (args, "action"))
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return 1;
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if (args[1] == NULL)
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{
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g_printerr (_("action name must be given after application id\n"));
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return 1;
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}
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name = args[1];
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if (!g_action_name_is_valid (name))
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{
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g_printerr (_("invalid action name: “%s”\n"
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"action names must consist of only alphanumerics, “-” and “.”\n"), name);
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return 1;
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}
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g_variant_builder_init_static (¶ms, G_VARIANT_TYPE ("av"));
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if (args[2])
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{
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GError *error = NULL;
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GVariant *parameter;
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parameter = g_variant_parse (NULL, args[2], NULL, NULL, &error);
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if (!parameter)
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{
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gchar *context;
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context = g_variant_parse_error_print_context (error, args[2]);
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g_printerr (_("error parsing action parameter: %s\n"), context);
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g_variant_builder_clear (¶ms);
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g_error_free (error);
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g_free (context);
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return 1;
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}
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g_variant_builder_add (¶ms, "v", parameter);
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g_variant_unref (parameter);
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if (args[3])
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{
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g_printerr (_("actions accept a maximum of one parameter\n"));
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g_variant_builder_clear (¶ms);
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return 1;
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}
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}
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return app_call (args[0], "ActivateAction", g_variant_new ("(sav@a{sv})", name, ¶ms, app_get_platform_data ()));
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}
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static int
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app_activate (const gchar *app_id)
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{
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return app_call (app_id, "Activate", g_variant_new ("(@a{sv})", app_get_platform_data ()));
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}
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static int
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app_launch (gchar **args)
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{
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GVariantBuilder files;
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gint i;
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if (!app_check_name (args, "launch"))
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return 1;
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if (args[1] == NULL)
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return app_activate (args[0]);
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g_variant_builder_init_static (&files, G_VARIANT_TYPE_STRING_ARRAY);
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for (i = 1; args[i]; i++)
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{
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GFile *file;
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/* "This operation never fails" */
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file = g_file_new_for_commandline_arg (args[i]);
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g_variant_builder_add_value (&files, g_variant_new_take_string (g_file_get_uri (file)));
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g_object_unref (file);
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}
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return app_call (args[0], "Open", g_variant_new ("(as@a{sv})", &files, app_get_platform_data ()));
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}
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static int
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app_list_actions (gchar **args)
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{
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const gchar * const *actions;
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GDesktopAppInfo *app_info;
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gchar *filename;
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gint i;
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if (!app_check_name (args, "list-actions"))
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return 1;
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if (args[1])
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{
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g_printerr (_("list-actions command takes only the application id"));
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app_help (FALSE, "list-actions");
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}
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filename = g_strconcat (args[0], ".desktop", NULL);
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app_info = g_desktop_app_info_new (filename);
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g_free (filename);
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if (app_info == NULL)
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{
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g_printerr (_("unable to find desktop file for application %s\n"), args[0]);
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return 1;
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}
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actions = g_desktop_app_info_list_actions (app_info);
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for (i = 0; actions[i]; i++)
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g_print ("%s\n", actions[i]);
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g_object_unref (app_info);
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return 0;
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}
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int
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main (int argc, char **argv)
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{
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setlocale (LC_ALL, "");
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textdomain (GETTEXT_PACKAGE);
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bindtextdomain (GETTEXT_PACKAGE, GLIB_LOCALE_DIR);
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#ifdef HAVE_BIND_TEXTDOMAIN_CODESET
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bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
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#endif
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if (argc < 2)
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return app_help (TRUE, NULL);
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if (g_str_equal (argv[1], "help"))
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return app_help (TRUE, argv[2]);
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if (g_str_equal (argv[1], "version"))
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return app_version (argv + 2);
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if (g_str_equal (argv[1], "list-apps"))
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return app_list (argv + 2);
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if (g_str_equal (argv[1], "launch"))
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return app_launch (argv + 2);
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if (g_str_equal (argv[1], "action"))
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return app_action (argv + 2);
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if (g_str_equal (argv[1], "list-actions"))
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return app_list_actions (argv + 2);
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g_printerr (_("unrecognized command: %s\n\n"), argv[1]);
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return app_help (FALSE, NULL);
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}
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