function uls_link_filter($post_url, $post = null)
{
//check flag to avoid infinite recursion
global $uls_link_filter_flag;
if ($uls_link_filter_flag) {
return $post_url;
}
//if global change is enabled
global $uls_permalink_convertion;
if ($uls_permalink_convertion) {
return $post_url;
}
//if user is in backend
if (is_admin()) {
return $post_url;
}
//init flag to avoid infinite recursion
$uls_link_filter_flag = true;
//get language from URL
$url_language = uls_get_user_language_from_url();
//get the general options
$options = uls_get_options();
//check if page donesn't require a post to do translation, it only uses URL
if (null == $post || is_object($post) && empty($post->ID)) {
$post_url = uls_get_url_translated($post_url, $url_language, $options["url_type"]);
//clean flag to control infinite recursion
$uls_link_filter_flag = false;
return $post_url;
}
//check if the URL is an special URL of WordPress and doesn't require changes
/*$query_string_start = strpos($post_url, '?');
if(false !== $query_string_start){
//check special folders of WordPress
$exclude_urls = array('wp-content', 'wp-includes', 'wp-admin');
$start_url = substr($post_url, 0, $query_string_start);
foreach($exclude_urls as $special_folder)
if(false !== strpos($start_url, $special_folder))
return $post_url;
}*/
//check post ID
$post_id = $post;
if (is_object($post)) {
$post_id = $post->ID;
}
//get post language
$post_language = uls_get_post_language($post_id);
//if there is a language in the URL, then append the language in the link
if (false !== $url_language) {
//get the translation of the post
$translation_id = uls_get_post_translation_id($post_id, $url_language);
if ($translation_id == $post_id) {
$post_url = uls_get_url_translated($post_url, $url_language, $options["url_type"]);
} elseif (false !== $translation_id) {
$post_url = uls_get_url_translated(get_permalink($translation_id), $url_language);
} else {
$post_url = uls_get_url_translated($post_url, $url_language, $options["url_type"]);
}
} else {
//check if language is the same to the user saved language
$saved_language = uls_get_user_saved_language();
if (false === $saved_language) {
$saved_language = uls_get_site_language();
}
//if languages are not the same
if ($post_language != $saved_language) {
//get the translation of the post
$translation_id = uls_get_post_translation_id($post_id, $url_language);
if ($translation_id != $post_id && false !== $translation_id) {
$post_url = uls_get_url_translated(get_permalink($translation_id), $url_language);
}
}
}
//clean flag to control infinite recursion
$uls_link_filter_flag = false;
return $post_url;
}
function uls_link_filter($post_url, $post = null)
{
//if global change is enabled
global $uls_permalink_convertion;
if (!$uls_permalink_convertion) {
return $post_url;
}
//TO-DO: what happen if user is in backend? see next line
//if user is in backend
if (is_admin()) {
return $post_url;
}
//echo "enter: " . $post_url . "<br/>";
if (null == $post) {
return $post_url;
}
$post_id = $post;
if (is_object($post)) {
$post_id = $post->ID;
}
//echo "post_id: " . $post_id . "<br/>";
//get post language
$post_language = uls_get_post_language($post_id);
//get language from URL
$language = uls_get_user_language_from_url();
//get the general options
$options = uls_get_options();
//echo "lang: " . $language . "<br/>";
//if there is a language in the URL, then append the language in the link
if (false !== $language) {
//get the translation of the post
$translation_id = uls_get_post_translation_id($post_id, $language);
//echo "Trans2: $translation_id <br/>";
if ($translation_id == $post_id) {
return uls_get_url_translated($post_url, $language, $options["url_type"]);
} elseif (false !== $translation_id) {
return get_permalink($translation_id);
} else {
return uls_get_url_translated($post_url, $language, $options["url_type"]);
}
}
//if language is the same to the user saved language
$saved_language = uls_get_user_saved_language();
//echo "saved: $saved_language<br/>";
if (false === $saved_language) {
$saved_language = uls_get_site_language();
}
if ($post_language == $saved_language) {
return $post_url;
} else {
//get the translation of the post
$translation_id = uls_get_post_translation_id($post_id, $language);
//echo "Trans: $translation_id <br/>";
if ($translation_id == $post_id) {
return $post_url;
} elseif (false !== $translation_id) {
return get_permalink($translation_id);
}
}
//add language to the url
return uls_get_url_translated($post_url, $saved_language, $options["url_type"]);
}