glib/gio/gsettings-tool.c

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/* GLIB - Library of useful routines for C programming
* Copyright (C) 2010 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*
* Author: Matthias Clasen
*/
#include "config.h"
#include <locale.h>
#include <gi18n.h>
#include <gio.h>
static gint
usage (gint *argc,
gchar **argv[],
gboolean use_stdout)
{
GOptionContext *context;
gchar *s;
g_set_prgname (g_path_get_basename ((*argv)[0]));
context = g_option_context_new (_("COMMAND"));
g_option_context_set_help_enabled (context, FALSE);
s = g_strdup_printf (
_("Commands:\n"
" help Show this information\n"
" get Get the value of a key\n"
" set Set the value of a key\n"
" monitor Monitor a key for changes\n"
" writable Check if a key is writable\n"
"\n"
"Use '%s COMMAND --help' to get help for individual commands.\n"),
g_get_prgname ());
g_option_context_set_description (context, s);
g_free (s);
s = g_option_context_get_help (context, FALSE, NULL);
if (use_stdout)
g_print ("%s", s);
else
g_printerr ("%s", s);
g_free (s);
g_option_context_free (context);
return use_stdout ? 0 : 1;
}
static void
remove_arg (gint num, gint *argc, gchar **argv[])
{
gint n;
g_assert (num <= (*argc));
for (n = num; (*argv)[n] != NULL; n++)
(*argv)[n] = (*argv)[n+1];
(*argv)[n] = NULL;
(*argc) = (*argc) - 1;
}
static void
modify_argv0_for_command (gint *argc,
gchar **argv[],
const gchar *command)
{
gchar *s;
g_assert (g_strcmp0 ((*argv)[1], command) == 0);
remove_arg (1, argc, argv);
s = g_strdup_printf ("%s %s", (*argv)[0], command);
(*argv)[0] = s;
}
static gint
handle_get (gint *argc,
gchar **argv[])
{
gchar *schema;
gchar *path;
gchar *key;
GSettings *settings;
GVariant *v;
GOptionContext *context;
GOptionEntry entries[] = {
{ "path", 'p', 0, G_OPTION_ARG_STRING, &path, N_("Specify the path for the schema"), N_("PATH") },
{ NULL }
};
GError *error;
gint ret = 1;
modify_argv0_for_command (argc, argv, "get");
context = g_option_context_new (_("SCHEMA KEY"));
g_option_context_set_help_enabled (context, FALSE);
g_option_context_set_summary (context, _("Get the value of KEY"));
g_option_context_set_description (context,
_("Arguments:\n"
" SCHEMA The id of the schema\n"
" KEY The name of the key\n"));
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
path = NULL;
error = NULL;
if (!g_option_context_parse (context, argc, argv, NULL) || *argc != 3)
{
gchar *s;
s = g_option_context_get_help (context, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
schema = (*argv)[1];
key = (*argv)[2];
settings = g_settings_new_with_path (schema, path);
v = g_settings_get_value (settings, key);
g_print ("%s\n", g_variant_print (v, FALSE));
g_variant_unref (v);
ret = 0;
out:
g_option_context_free (context);
return ret;
}
static gint
handle_set (gint *argc,
gchar **argv[])
{
gchar *schema;
gchar *path;
gchar *key;
gchar *value;
GSettings *settings;
GVariant *v;
const GVariantType *type;
GOptionContext *context;
GOptionEntry entries[] = {
{ "path", 'p', 0, G_OPTION_ARG_STRING, &path, N_("Specify the path for the schema"), N_("PATH") },
{ NULL }
};
GError *error;
gint ret = 1;
modify_argv0_for_command (argc, argv, "set");
context = g_option_context_new (_("SCHEMA KEY VALUE"));
g_option_context_set_help_enabled (context, FALSE);
g_option_context_set_summary (context, _("Set the value of KEY"));
g_option_context_set_description (context,
_("Arguments:\n"
" SCHEMA The id of the schema\n"
" KEY The name of the key\n"
" VALUE The value to set key to, as a serialized GVariant\n"));
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
path = NULL;
error = NULL;
if (!g_option_context_parse (context, argc, argv, NULL) || *argc != 4)
{
gchar *s;
s = g_option_context_get_help (context, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
schema = (*argv)[1];
key = (*argv)[2];
value = (*argv)[3];
settings = g_settings_new_with_path (schema, path);
v = g_settings_get_value (settings, key);
type = g_variant_get_type (v);
g_variant_unref (v);
error = NULL;
v = g_variant_parse (type, value, NULL, NULL, &error);
if (v == NULL)
{
g_printerr ("%s\n", error->message);
goto out;
}
if (!g_settings_set_value (settings, key, v))
{
g_printerr (_("Key %s is not writable\n"), key);
goto out;
}
ret = 0;
out:
g_option_context_free (context);
return ret;
}
static gint
handle_writable (gint *argc,
gchar **argv[])
{
gchar *schema;
gchar *path;
gchar *key;
GSettings *settings;
GOptionContext *context;
GOptionEntry entries[] = {
{ "path", 'p', 0, G_OPTION_ARG_STRING, &path, N_("Specify the path for the schema"), N_("PATH") },
{ NULL }
};
GError *error;
gint ret = 1;
modify_argv0_for_command (argc, argv, "writable");
context = g_option_context_new (_("SCHEMA KEY"));
g_option_context_set_help_enabled (context, FALSE);
g_option_context_set_summary (context, _("Find out whether KEY is writable"));
g_option_context_set_description (context,
_("Arguments:\n"
" SCHEMA The id of the schema\n"
" KEY The name of the key\n"));
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
path = NULL;
error = NULL;
if (!g_option_context_parse (context, argc, argv, NULL) || *argc != 3)
{
gchar *s;
s = g_option_context_get_help (context, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
schema = (*argv)[1];
key = (*argv)[2];
settings = g_settings_new_with_path (schema, path);
if (g_settings_is_writable (settings, key))
g_print ("true\n");
else
g_print ("false\n");
ret = 0;
out:
g_option_context_free (context);
return ret;
}
static void
key_changed (GSettings *settings,
const gchar *key)
{
GVariant *v;
gchar *value;
v = g_settings_get_value (settings, key);
value = g_variant_print (v, FALSE);
g_print ("%s\n", value);
g_free (value);
g_variant_unref (v);
}
static gint
handle_monitor (gint *argc,
gchar **argv[])
{
gchar *schema;
gchar *path;
gchar *key;
GSettings *settings;
gchar *detailed_signal;
GMainLoop *loop;
GOptionContext *context;
GOptionEntry entries[] = {
{ "path", 'p', 0, G_OPTION_ARG_STRING, &path, N_("Specify the path for the schema"), N_("PATH") },
{ NULL }
};
GError *error;
gint ret = 1;
modify_argv0_for_command (argc, argv, "monitor");
context = g_option_context_new (_("SCHEMA KEY"));
g_option_context_set_help_enabled (context, FALSE);
g_option_context_set_summary (context,
_("Monitor KEY for changes and print the changed values.\n"
"Monitoring will continue until the process is terminated."));
g_option_context_set_description (context,
_("Arguments:\n"
" SCHEMA The id of the schema\n"
" KEY The name of the key\n"));
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
path = NULL;
error = NULL;
if (!g_option_context_parse (context, argc, argv, NULL) || *argc != 3)
{
gchar *s;
s = g_option_context_get_help (context, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
schema = (*argv)[1];
key = (*argv)[2];
settings = g_settings_new_with_path (schema, path);
detailed_signal = g_strdup_printf ("changed::%s", key);
g_signal_connect (settings, detailed_signal,
G_CALLBACK (key_changed), NULL);
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
g_main_loop_unref (loop);
out:
g_option_context_free (context);
return ret;
}
int
main (int argc, char *argv[])
{
gboolean ret = 1;
setlocale (LC_ALL, "");
g_type_init ();
if (argc < 2)
ret = usage (&argc, &argv, FALSE);
else if (g_strcmp0 (argv[1], "help") == 0)
ret = usage (&argc, &argv, TRUE);
else if (g_strcmp0 (argv[1], "get") == 0)
ret = handle_get (&argc, &argv);
else if (g_strcmp0 (argv[1], "set") == 0)
ret = handle_set (&argc, &argv);
else if (g_strcmp0 (argv[1], "monitor") == 0)
ret = handle_monitor (&argc, &argv);
else if (g_strcmp0 (argv[1], "writable") == 0)
ret = handle_writable (&argc, &argv);
else
{
g_printerr (_("Unknown command '%s'\n"), argv[1]);
ret = usage (&argc, &argv, FALSE);
}
return ret;
}