pico_breadcrumbs.php

<?php

/**
 * Breadcrumbs plugin for Pico CMS 
 *
 * @author nebman
 */
 
class Pico_Breadcrumbs {

	private $breadcrumbs = array();
	private $page_names = array();
	private $settings = array();

	public function plugins_loaded()
	{
		
	}

	public function config_loaded(&$settings)
	{
		$this->settings = $settings;
	}
	
	public function request_url(&$url)
	{
		$this->breadcrumbs = explode('/', $url);		
	}
	
	public function before_load_content(&$file)
	{
		
	}
	
	public function after_load_content(&$file, &$content)
	{
		
	}
	
	public function before_404_load_content(&$file)
	{
		
	}
	
	public function after_404_load_content(&$file, &$content)
	{
		
	}
	
	public function before_read_file_meta(&$headers)
	{
		$headers['author_url'] = 'Author_URL';
	}
	
	public function file_meta(&$meta)
	{

	}

	public function before_parse_content(&$content)
	{
		
	}
	
	public function after_parse_content(&$content)
	{
		
	}
	
	public function get_page_data(&$data, $page_meta)
	{
		
	}
	
	public function get_pages(&$pages, &$current_page, &$prev_page, &$next_page)
	{
		foreach( $pages as $page ){
			$title = $page['meta']['title'] ? : $page['title'];
			$this->page_names[$page['url']] = $title;
		}
	}
	
	public function before_twig_register()
	{
		
	}
	
	public function before_render(&$twig_vars, &$twig, &$template)
	{
		$breadcrumbs = array();
		$url = $this->settings['base_url'];
		
		foreach ($this->breadcrumbs as $crumb) {
			$url = $url . (substr($url, -1) == '/' ? '' : '/') . $crumb;
			$exists = $this->url_exists($crumb);
			
			$name = isset($this->page_names[$url]) ?  $this->page_names[$url] : (isset($this->page_names[$url.'/']) ? $this->page_names[$url.'/'] : urldecode($crumb));
			
			if(!empty($name)) {
				$breadcrumbs[] = array('url' => $url, 'name' => $name, 'exists' => $exists );
			}
		}
		
		$twig_vars['breadcrumbs'] = $breadcrumbs;
	}
	
	public function after_render(&$output)
	{
		
	}
  /*
   * URL to check whether the real URL ( copy from Pico source )
   *
   * @param $url URL
   *
   */
  private function url_exists($url)
  {
    $file = "";
		if($url) $file = $this->settings['content_dir'] . $url;
		else $file = $this->settings['content_dir'] .'index';

		if(is_dir($file)) $file = $this->settings['content_dir'] . $url .'/index'. CONTENT_EXT;
		else $file .= CONTENT_EXT;
		return file_exists($file);
  }
	
}

?>