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/*
 * mate-gsettings.c: helper API for GSettings
 *
 * Copyright (C) 2013 Stefano Karapetsas
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 *
 * Authors:
 *  Stefano Karapetsas <stefano@karapetsas.com>
 */

#include "mate-gsettings.h"

/**
 * mate_gsettings_schema_exists:
 * @schema: schema to check.
 *
 * Check if a given schema is installed in GSettings.
 *
 * Return value: TRUE if schema exists, FALSE if not.
 * 
 * Since: 1.7.1
 */
gboolean
mate_gsettings_schema_exists (const gchar* schema)
{
    const char * const *schemas;
    gboolean schema_exists;
    gint i;

    schemas = g_settings_list_schemas ();
    schema_exists = FALSE;

    for (i = 0; schemas[i] != NULL; i++) {
        if (g_strcmp0 (schemas[i], schema) == 0) {
            schema_exists = TRUE;
            break;
        }
    }

    return schema_exists;
}

gboolean
mate_gsettings_append_strv (GSettings   *settings,
                            const gchar *key,
                            const gchar *value)
{
    gchar    **old;
    gchar    **new;
    gint       size;
    gboolean   retval;

    old = g_settings_get_strv (settings, key);

    for (size = 0; old[size] != NULL; size++);

    size += 1; /* appended value */
    size += 1; /* NULL */

    new = g_realloc_n (old, size, sizeof (gchar *));

    new[size - 2] = g_strdup (value);
    new[size - 1] = NULL;

    retval = g_settings_set_strv (settings, key,
                                  (const gchar **) new);

    g_strfreev (new);

    return retval;
}

gboolean
mate_gsettings_remove_all_from_strv (GSettings   *settings,
                                     const gchar *key,
                                     const gchar *value)
{
    GArray    *array;
    gchar    **old;
    gint       i;
    gboolean   retval;

    old = g_settings_get_strv (settings, key);
    array = g_array_new (TRUE, TRUE, sizeof (gchar *));

    for (i = 0; old[i] != NULL; i++) {
        if (g_strcmp0 (old[i], value) != 0)
            array = g_array_append_val (array, old[i]);
    }

    retval = g_settings_set_strv (settings, key,
                                  (const gchar **) array->data);

    g_strfreev (old);
    g_array_free (array, TRUE);

    return retval;
}

GSList*
mate_gsettings_strv_to_gslist (const gchar *const *array)
{
    GSList *list = NULL;
    gint i;
    if (array != NULL) {
        for (i = 0; array[i]; i++) {
            list = g_slist_append (list, g_strdup (array[i]));
        }
    }
    return list;
}