/**
* Parse the container for links and save the results to the DB.
*
* @return void
*/
function synch()
{
//FB::log("Parsing {$this->container_type}[{$this->container_id}]");
//Remove any existing link instance records associated with the container
$this->delete_instances();
//Load the wrapped object, if not done already
$this->get_wrapped_object();
//FB::log($this->fields, "Parseable fields :");
//Iterate over all parse-able fields
foreach ($this->fields as $name => $format) {
//Get the field value
$value = $this->get_field($name);
if (empty($value)) {
//FB::log($name, "Skipping empty field");
continue;
}
//FB::log($name, "Parsing field");
//Get all parsers applicable to this field
$parsers = blcParserHelper::get_parsers($format, $this->container_type);
//FB::log($parsers, "Applicable parsers");
if (empty($parsers)) {
continue;
}
$base_url = $this->base_url();
$default_link_text = $this->default_link_text($name);
//Parse the field with each parser
foreach ($parsers as $parser) {
//FB::log("Parsing $name with '{$parser->parser_type}' parser");
$found_instances = $parser->parse($value, $base_url, $default_link_text);
//FB::log($found_instances, "Found instances");
$transactionManager = TransactionManager::getInstance();
$transactionManager->start();
//Complete the link instances by adding container info, then save them to the DB.
foreach ($found_instances as $instance) {
$instance->set_container($this, $name);
$instance->save();
}
$transactionManager->commit();
}
}
$this->mark_as_synched();
}
/**
* Get the parser associated with this link instance.
*
* @return blcParser|null
*/
function &get_parser()
{
if (is_null($this->_parser)) {
$this->_parser =& blcParserHelper::get_parser($this->parser_type);
}
return $this->_parser;
}
/**
* Hook for the 'the_content' filter. Scans the current post and adds the 'broken_link'
* CSS class to all links that are known to be broken. Currently works only on standard
* HTML links (i.e. the '<a href=...' kind).
*
* @param string $content Post content
* @return string Modified post content.
*/
function hook_the_content($content)
{
global $post, $wpdb;
/** @var wpdb $wpdb */
if (empty($post) || !in_array($post->post_type, $this->enabled_post_types)) {
return $content;
}
//Retrieve info about all occurences of broken links in the current post
$q = "\n\t\t\tSELECT instances.raw_url\n\t\t\tFROM {$wpdb->prefix}blc_instances AS instances JOIN {$wpdb->prefix}blc_links AS links \n\t\t\t\tON instances.link_id = links.link_id\n\t\t\tWHERE \n\t\t\t\tinstances.container_type = %s\n\t\t\t\tAND instances.container_id = %d\n\t\t\t\tAND links.broken = 1\n\t\t\t\tAND parser_type = 'link' \n\t\t";
$q = $wpdb->prepare($q, $post->post_type, $post->ID);
$links = $wpdb->get_results($q, ARRAY_A);
//Return the content unmodified if there are no broken links in this post.
if (empty($links) || !is_array($links)) {
return $content;
}
//Put the broken link URLs in an array
$broken_link_urls = array();
foreach ($links as $link) {
$broken_link_urls[] = $link['raw_url'];
}
//Iterate over all HTML links and modify the broken ones
if ($parser = blcParserHelper::get_parser('link')) {
$content = $parser->multi_edit($content, array(&$this, 'highlight_broken_link'), $broken_link_urls);
}
return $content;
}
