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settings = get_option('_metaseo_settings');
add_filter('query_vars', array($this, 'wpmsQueryVars'));
add_filter('request', array($this, 'wpmsRequest'));
add_filter('category_link', array($this, 'wpmsRemoveCategoryBase'));
add_filter('category_rewrite_rules', array($this, 'wpmsCategoryRewriteRules'));
add_action('init', array($this, 'wpmsFlush'), 999);
add_action('created_category', array($this, 'wpmsScheduleFlush'));
add_action('edited_category', array($this, 'wpmsScheduleFlush'));
add_action('delete_category', array($this, 'wpmsScheduleFlush'));
}
/**
* Save an option that triggers a flush on the next init.
*
* @since 1.2.8
* @return void
*/
public function wpmsScheduleFlush()
{
update_option('wpms_reflush_rewrite', 1);
}
/**
* If the flush option is set, flush the rewrite rules.
*
* @return boolean
* @since 1.2.8
*/
public function wpmsFlush()
{
$reflush = get_option('wpms_reflush_rewrite');
if ($reflush) {
add_action('shutdown', 'flush_rewrite_rules');
delete_option('wpms_reflush_rewrite');
return true;
}
return false;
}
/**
* Override the category link to remove the category base.
*
* @param string $link Unused, overridden by the function.
*
* @return string
*/
public function wpmsRemoveCategoryBase($link)
{
$category_base = get_option('category_base');
if (empty($category_base)) {
$category_base = 'category';
}
/*
* Remove initial slash, if there is one (we remove the trailing slash
* in the regex replacement and don't want to end up short a slash).
*/
if (substr($category_base, 0, 1) === '/') {
$category_base = substr($category_base, 1);
}
$category_base .= '/';
return preg_replace('`' . preg_quote($category_base, '`') . '`u', '', $link, 1);
}
/**
* Update the query vars with the redirect var when remove category prefix is active.
*
* @param array $query_vars Main query vars to filter.
*
* @return array
*/
public function wpmsQueryVars($query_vars)
{
if (isset($this->settings['metaseo_removecatprefix']) && $this->settings['metaseo_removecatprefix'] === '1') {
$query_vars[] = 'wpms_category_redirect';
}
return $query_vars;
}
/**
* Checks whether the redirect needs to be created.
*
* @param array $query_vars Query vars to check for existence of redirect var.
*
* @return array|void The query vars.
*/
public function wpmsRequest($query_vars)
{
if (!isset($query_vars['wpms_category_redirect'])) {
return $query_vars;
}
$this->redirect($query_vars['wpms_category_redirect']);
}
/**
* This function taken and only slightly adapted from WP No Category Base plugin by Saurabh Gupta.
*
* @return array
*/
public function wpmsCategoryRewriteRules()
{
global $wp_rewrite;
$category_rewrite = array();
$taxonomy = get_taxonomy('category');
$permalink_structure = get_option('permalink_structure');
$blog_prefix = '';
if (is_multisite() && !is_subdomain_install() && is_main_site() && strpos($permalink_structure, '/blog/') === 0) {
$blog_prefix = 'blog/';
}
$categories = get_categories(array('hide_empty' => false));
if (is_array($categories) && !empty($categories)) {
foreach ($categories as $category) {
$category_nicename = $category->slug;
if ($category->parent === $category->cat_ID) {
// Recursive recursion.
$category->parent = 0;
} elseif ($taxonomy->rewrite['hierarchical'] !== false && $category->parent !== 0) {
$parents = get_category_parents($category->parent, false, '/', true);
if (!is_wp_error($parents)) {
$category_nicename = $parents . $category_nicename;
}
unset($parents);
}
$category_rewrite = $this->addCategoryRewrites($category_rewrite, $category_nicename, $blog_prefix, $wp_rewrite->pagination_base);
// Adds rules for the uppercase encoded URIs.
$category_nicename_filtered = $this->convertEncodedToUpper($category_nicename);
if ($category_nicename_filtered !== $category_nicename) {
$category_rewrite = $this->addCategoryRewrites($category_rewrite, $category_nicename_filtered, $blog_prefix, $wp_rewrite->pagination_base);
}
}
unset($categories, $category, $category_nicename, $category_nicename_filtered);
}
// Redirect support from Old Category Base.
$old_base = $wp_rewrite->get_category_permastruct();
$old_base = str_replace('%category%', '(.+)', $old_base);
$old_base = trim($old_base, '/');
$category_rewrite[$old_base . '$'] = 'index.php?wpms_category_redirect=$matches[1]';
return $category_rewrite;
}
/**
* Adds required category rewrites rules.
*
* @param array $rewrites The current set of rules.
* @param string $category_name Category nicename.
* @param string $blog_prefix Multisite blog prefix.
* @param string $pagination_base WP_Query pagination base.
*
* @return array The added set of rules.
*/
protected function addCategoryRewrites($rewrites, $category_name, $blog_prefix, $pagination_base)
{
$rewrite_name = $blog_prefix . '(' . $category_name . ')';
$rewrites[$rewrite_name . '/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$'] = 'index.php?category_name=$matches[1]&feed=$matches[2]';
$rewrites[$rewrite_name . '/' . $pagination_base . '/?([0-9]{1,})/?$'] = 'index.php?category_name=$matches[1]&paged=$matches[2]';
$rewrites[$rewrite_name . '/?$'] = 'index.php?category_name=$matches[1]';
return $rewrites;
}
/**
* Walks through category nicename and convert encoded parts
* into uppercase using $this->encodeToUpper().
*
* @param string $name The encoded category URI string.
*
* @return string The convered URI string.
*/
protected function convertEncodedToUpper($name)
{
// Checks if name has any encoding in it.
if (strpos($name, '%') === false) {
return $name;
}
$names = explode('/', $name);
$names = array_map(array($this, 'encodeToUpper'), $names);
return implode('/', $names);
}
/**
* Converts the encoded URI string to uppercase.
*
* @param string $encoded The encoded string.
*
* @return string The uppercased string.
*/
public function encodeTo