* @date May 24th 2010 * */ Class AttachmentGalleryManager{ var $path; var $options=array(); var $marker='[attachmentgallery]'; var $downloadText='Download Now'; /** * @desc * @author Leo Brown * */ function AttachmentGalleryManager(){ $this->path = dirname(__FILE__).'/'; } /** * @desc * @author Leo Brown * */ function detect_gallery_options($content){ if(false!==strpos($content,$this->marker)){ return array( 'filetypes'=>array('.pdf') ); } else return false; } /** * @desc Returns gallery HTML on the basis of options * @author Leo Brown * @param $options Array Options array * @return string HTML of Gallery */ function get_attachment_gallery(&$contents,$options){ $attachments = $this->find_attachment_links($contents, $options['filetypes']); // get metadata reader @include_once 'PDFMetaData.class.php'; if(class_exists('PDFMetaData')) $metaReader=new PDFMetaData(); // generate HTML for gallery $html=''; if($attachments){ $html .= '
'; foreach($attachments as $file){ $meta = $this->cache_get('attachment_gallery_'.md5($file['url'])); if(!is_array($meta)){ if(@$metaReader){ $meta = $metaReader->getMeta($file['url']); $this->cache_set('attachment_gallery_'.md5($file['url']),$meta); } } $html .= "
"; if(class_exists('imagick')){ $html .= '
'; } $html .="
{$file['title']}
"; // overwrite PDF-style Meta (Author, Subject, Keywords etc) // with any passed in the attachment array (from WP Media library) // specifically Subject (description) if($desc = @$file['description']) $meta['Subject']=$desc; foreach(@$meta as $key=>$value){ // split multiple lines onto DIVs so the user can style them if required $valueLines = explode("\n",str_replace(array('\r\n','\n'),"\n",$value)); $value = '
'.implode('
',$valueLines).' 
'; $html .="
{$key}
{$value}
"; } $html .= "
{$this->downloadText}
"; } $html .= '
'; } return $html; } /** * @desc Places items the cache * @author Leo Brown * */ function cache_set($key, $data){ return @file_put_contents( sys_get_temp_dir().'/attachment_cache_'. md5($key),serialize($data) ); } /** * @desc Accesses the cache * @author Leo Brown * */ function cache_get($key){ return @unserialize(@file_get_contents( sys_get_temp_dir(). '/attachment_cache_'.md5($key) )); } /** * @desc Splices gallery content back into page content * @author Leo Brown * @todo Move this function to the shortcode library, probably * */ function insert_gallery($page, $gallery){ return str_replace($this->marker,$gallery,$page); } /** * @desc * @author Leo Brown * */ function find_attachment_links(&$input, $types){ if(!$types) $types=array('.pdf'); $types=implode($types,'|'); // our list of files $results=array(); // pattern for any link - hand written / may need to be modified $regexp = "]*href=(['\"]??)([^\" >]*)\\1[^>]*>(.*)<\/a>"; // process our matches if(preg_match_all("/$regexp/siU", $input, $matches, PREG_SET_ORDER)) { foreach($matches as $match){ // storage for this result $result=array(); // known values $result['title']=$match[3]; $result['url'] =$match[2]; // test if is rel=attachment (regex from _fix_attachment_links in post.php) $search = "#[\s]+rel=(\"|')(.*?)wp-att-(?P\d+)\\1#i"; if(preg_match($search, $match[0], $attachment)){ // get the attachment that this link refers to if($data = get_post($attachment['id'], 'ARRAY_A')){ $result['title'] = $data['post_title']; $result['url'] = $data['guid']; $result['description'] = $data['post_content']; $result['caption'] = $data['post_excerpt']; // get author etc too? } } // only store if we actually have a URL from the anchor tag if($result['url']){ // remove the link $input=str_replace($match[0],'',$input); // store result $results[]=$result; } } } return $results; } } /** * @desc Hooks the_content and absorbs attachment links, replaces them with a gallery * @author Leo Brown * */ function attachmentGalleryHook($content){ $manager=new AttachmentGalleryManager(); $options = $manager->detect_gallery_options($content); if($options){ $gallery = $manager->get_attachment_gallery($content,$options); if($gallery){ return $manager->insert_gallery($content, $gallery); } } else return $content; } ?>