Permalink Manager & qTranslate-XT support

permalink-manager-qtranslatext.php

<?php
/*
 * Plugin Name:       Permalink Manager & qTranslate-XT support
 * Plugin URI:        http://maciejbis.net/
 * Description:       Plugin that adds basic support for qTranslateXT content to Permalink Manager
 * Version:           1.0.1
 * Author:            Maciej Bis
 * Author URI:        http://maciejbis.net/
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Domain Path:       /languages
*/

function pmqt_init() {
	if(function_exists('qtranxf_init_language')) {
		add_filter('permalink_manager_detect_uri', 'pmqt_detect_uri_language', 9, 3);
		add_filter('permalink_manager_filter_final_post_permalink', 'pmqt_adjust_uri_language', 9, 3);
		add_filter('permalink_manager_filter_final_term_permalink', 'pmqt_adjust_uri_language', 9, 3);

		add_action('edit_form_before_permalink', 'pmqt_uri_editor', 9999);
	}
}
add_action('init', 'pmqt_init');

function pmqt_get_default_lang() {
	global $q_config;

	if(!empty($q_config['default_language'])) {
		$def_lang = $q_config['default_language'];
	} else {
		$def_lang = '';
	}

	return $def_lang;
}

function pmqt_detect_uri_language($uri_parts, $request_url, $endpoints) {
	if(function_exists('qtranxf_getSortedLanguages')) {
		$languages_list = qtranxf_getSortedLanguages();
	}

	if(is_array($languages_list)) {
		$languages_list = implode("|", $languages_list);
	} else {
		return $uri_parts;
	}

	if(!empty($languages_list)) {
		$current_language = (function_exists('qtranxf_getLanguage')) ? qtranxf_getLanguage() : pmqt_get_default_lang();

		preg_match("/^(?:({$languages_list})\/)?(.+?)(?|\/({$endpoints})(?|\/(.*)|$)|\/()([\d]+)\/?)?$/i", $request_url, $regex_parts);

		$uri_parts['lang'] = $current_language;
		$uri_parts['uri'] = (!empty($regex_parts[2])) ? $regex_parts[2] : "";
		$uri_parts['endpoint'] = (!empty($regex_parts[3])) ? $regex_parts[3] : "";
		$uri_parts['endpoint_value'] = (!empty($regex_parts[4])) ? $regex_parts[4] : "";
	}

	return $uri_parts;
}

/**
 * Add language code to the custom permalink
 */
function pmqt_adjust_uri_language($permalink, $post, $old_permalink) {
	if(function_exists('qtranxf_convertURLs')) {
		$permalink = qtranxf_convertURLs($permalink);
	}

	return $permalink;
}

/**
 * Add URI Editor to pages edited with qTranslateXT
 */
/*function pmqt_uri_editor($post) {
	$post_type   = qtranxf_post_type();
	$page_config = qtranxf_get_admin_page_config_post_type( $post_type );

	if(empty($page_config)) {
		return;
	}

	echo Permalink_Manager_Admin_Functions::display_uri_box($post);
}*/