/*
 * Copyright (C) 2006, Jamie McCracken <jamiemcc@gnome.org>
 * Copyright (C) 2008, Nokia <ivan.frade@nokia.com>
 *
 * 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 2.1 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#include "config.h"

#define _XOPEN_SOURCE
#define _XOPEN_SOURCE_EXTENDED 1	/* strcasecmp is XPG4v2 */
#include <time.h>

#include <strings.h>
#include <string.h>
#include <stdlib.h>

#include <glib.h>

#include "tracker-log.h"
#include "tracker-utils.h"
#include "tracker-type-utils.h"

gint
tracker_string_in_string_list (const gchar  *str,
                               gchar       **strv)
{
	gchar **p;
	gint    i;

	g_return_val_if_fail (str != NULL, -1);

	if (!strv) {
		return -1;
	}

	for (p = strv, i = 0; *p; p++, i++) {
		if (strcasecmp (*p, str) == 0) {
			return i;
		}
	}

	return -1;
}

gboolean
tracker_string_in_gslist (const gchar *str,
                          GSList      *list)
{
	GSList *l;

	g_return_val_if_fail (str != NULL, FALSE);

	for (l = list; l; l = l->next) {
		if (g_strcmp0 (l->data, str) == 0) {
			return TRUE;
		}
	}

	return FALSE;
}

GSList *
tracker_string_list_to_gslist (gchar **strv,
                               gsize   size)
{
	GSList *list;
	gsize   i;
	gsize   size_used;

	if (!strv) {
		return NULL;
	}

	if (size < 1) {
		size_used = g_strv_length (strv);
	} else {
		size_used = size;
	}

	list = NULL;

	for (i = 0; i < size_used; i++) {
		if (strv[i]) {
			list = g_slist_prepend (list, g_strdup (strv[i]));
		} else {
			break;
		}
	}

	return g_slist_reverse (list);
}


gchar **
tracker_string_to_string_list (const gchar *str)
{
	gchar **result;

	result = g_new0 (gchar *, 2);

	result [0] = g_strdup (str);
	result [1] = NULL;

	return result;
}

static gchar **
list_to_string_list (GSList *list, gint length)
{
	GSList  *l;
	gchar  **strv;
	gint     i;

	strv = g_new0 (gchar*, length + 1);

	for (l = list, i = 0; l; l = l->next) {
		if (!l->data) {
			continue;
		}

		strv[i++] = g_strdup (l->data);
	}

	strv[i] = NULL;

	return strv;
}

gchar **
tracker_gslist_to_string_list (GSList *list)
{
	return list_to_string_list (list, g_slist_length (list));
}

gchar **
tracker_glist_to_string_list (GList *list)
{
	return list_to_string_list ((GSList*) list, g_list_length (list));
}

gboolean
tracker_gslist_with_string_data_equal (GSList *list1,
                                       GSList *list2)
{
        GSList *sl;

        if (list1 == list2) {
                return TRUE;
        }

        if (g_slist_length (list1) != g_slist_length (list2)) {
                return FALSE;
        }

        /* NOTE: This is probably not the most efficient way to do
         * this, but we don't want to order the list first since that
         * would involve creating new memory. This would make sense
         * for large list operations I think. We don't expect to be
         * doing much if any of that.
         */
        for (sl = list1; sl; sl = sl->next) {
                const gchar *str;

                str = sl->data;

                /* If we are not still in the list, remove the dir */
                if (!tracker_string_in_gslist (str, list2)) {
                        return FALSE;
                }
        }

        for (sl = list2; sl; sl = sl->next) {
                const gchar *str;

                str = sl->data;

                /* If we are now in the list, add the dir */
                if (!tracker_string_in_gslist (str, list1)) {
                        return FALSE;
                }
        }

        return TRUE;
}

GSList *
tracker_gslist_copy_with_string_data (GSList *list)
{
	GSList *l;
	GSList *new_list;

	if (!list) {
		return NULL;
	}

	new_list = NULL;

	for (l = list; l; l = l->next) {
		new_list = g_slist_prepend (new_list, g_strdup (l->data));
	}

	new_list = g_slist_reverse (new_list);

	return new_list;
}
