HTML preview regular replacement

HTML preview regular replacement

	/**
 * HTML replacement processing class, consider the following replacements
 * 1. img src: '/]+? )/i'
 * 2. a href : '/]+?)/i'
 * 3. ifram.src : '/]+?)/i'
 * 4. frame src : '/< frame(.+?)src=(['" ])?(.+?)([ >]+?)/i'
 * 5. js : '/window.open([( ]+?)( ['" ]+?)(.+?)([ )+?])/i'
 * 6. css : '/background(.+?)url([( ])(['" ]+?) (.+?)([ )+?])/i'
*/
	class Myreplace {
		private $moudle_array = array('udata','tdata','tresult','dresult');
		private $content;
		private $relative_dirname;
		private $projectid;
		private $moudle;
		function __construct() {
			$this->CI = &get_instance ();
		}

		/**
 * Replacement
 * @param string $content HTML content
 * @param string $relative relative path
 * @param int $projectid project id
 * @moudle string $moudle template identifier: udata,tdata,tresult,dresult
*/
		public function my_replace($content,$relative,$projectid,$moudle) {
			$this->content = $content;
			$this->relative_dirname = $relative;
			$this->projectid = $projectid;
			if(in_array(strtolower($moudle),$this->moudle_array))
				$this->moudle = $moudle;
			else exit;
			switch($this->moudle) {
				case 'udata':
					$this->CI->load->model('mupload_data','model');
					break;
				case 'tdata':
					$this->CI->load->model('taskdata','model');
					break;
				case 'tresult':
					$this->CI->load->model('taskresult','model');
					break;
				case 'dresult':
					$this->CI->load->model('dmsresult','model');
					break;
				default:
					break;
			}

			$pattern = '/]+?)/i';
			$content = preg_replace_callback( $pattern, array($this, 'image_replace') , $content );
			$pattern = '/]+?)/i';
			$content = preg_replace_callback( $pattern, array($this, 'html_replace') , $content );
			$pattern = '/]+?)/i';
			$content = preg_replace_callback( $pattern, array($this, 'iframe_replace') , $content );
			$pattern = '/]+?)/i';
			$content = preg_replace_callback( $pattern, array($this, 'frame_replace'), $content );
			$pattern = '/window.open([( ]+?)(['" ]+?)(.+?)([ )]+?)/i';
			$content = preg_replace_callback( $pattern, array($this, 'js_replace'), $content );
			$pattern = '/background(.+?)url([( ])(['" ]+?)(.+?)([ )+?])/i';
			$content = preg_replace_callback( $pattern, array($this, 'css_replace'), $content);
			return $content;
		}

		private function image_replace($matches) {
			if(count($matches) < 4) return '';
			if( empty($matches[3]) ) return '';
			$matches[3] = rtrim($matches[3],''"/');
			//获取图片的id
			$parent_dir_num = substr_count( $matches[3], '../');
			$relative_dirname = $this->relative_dirname;
			for($i=0; $i<$parent_dir_num; $i++) {
				$relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
			}
			$relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');
			$image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
			//输出
			if( !empty($image_id) ) {
				if($this->moudle == 'dresult') {
					return "CI->config->item("base_url")."cdms/".$this->moudle."/readpic/$image_id?pid=".$this->projectid .$matches[2]. $matches[4];
				} else {
					return "CI->config->item("base_url")."cdms/".$this->moudle."/picfile/$image_id?pid=".$this->projectid .$matches[2]. $matches[4];
				}
			} else {
				return "			}
		}

 private function html_replace( $matches ) {
 if(count($matches) < 4) return '';
 if( empty($matches[3]) ) return '';
 //If href link ( If $matches[3]) starts with http or www or mailto, it will not be processed
 //if(preg_match('/^[http|www|mailto](.+?)/i',$matches[3]) )
 // return " $matches[3] = rtrim($ matches[3],''"/');
 //Process anchor point
 if(substr_count($matches[3],'#')>0)
 $matches[3] = substr($matches[3 ],0,strrpos($matches[3],'#'));
 //Get the id of html
 $parent_dir_num = substr_count( $matches[3], '../');
 $relative_dirname = $this ->relative_dirname;
 for($i=0; $i<$parent_dir_num; $i++) {
 $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
 }
 $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');
 $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath ,$this->projectid);
 //Output
 if( !empty($txtfile_id ) ) {
 if($this->moudle == 'dresult') {
 return "moudle."/readfile /$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];
 } else {
 return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$ this->projectid .$matches[2].$matches[4];
 }
 } else {
 return " }
 }

 private function iframe_replace( $matches ) {
 if(count($matches) < 4) return '';
 if( empty($matches[3]) ) return '';
 $matches[3] = rtrim($matches[3],''"/');

 //Process anchor point
 if(substr_count($matches[ 3],'#')>0)
 $matches[3] = substr($matches[3],0,strrpos($matches[3],'#'));
 //Get the id of html
 $parent_dir_num = substr_count( $matches[3], '../');
 $relative_dirname = $this->relative_dirname;
 for($i=0; $i<$parent_dir_num; $i++) {
 $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
 }
 $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./ ');
 $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
 //Output
 if( !empty($txtfile_id ) ) {
 if ($this->moudle == 'dresult') {
 return "CI->config- >item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4] ;
 } else {
 return "CI->config->item("base_url"). "cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];
 }
 } else {
 return " }
 }

 private function frame_replace ( $matches ) {
 if(count($matches) < 4) return '';
 if( empty($matches[3]) ) return '';
 $matches[3] = rtrim($matches[3 ],''"/');
 //Process anchor point
 if(substr_count($matches[3],'#')>0)
 $matches[3] = substr($matches[3],0 ,strrpos($matches[3],'#'));
 //Get the id of html
 $parent_dir_num = substr_count( $matches[3], '../');
 $relative_dirname = $this-> relative_dirname;
 for($i=0; $i<$parent_dir_num; $i++) {
 $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
 }
 $relativepath = rtrim( $relative_dirname,'/') . '/'.ltrim($matches[3],'./');
 $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this ->projectid);
 //Output
 if( !empty($txtfile_id ) ) {
 if($this->moudle == 'dresult') {
 return "moudle."/readfile/$txtfile_id ?pid=".$this->projectid.$matches[2].$matches[4];
 }else {
					return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid.$matches[2].$matches[4];
				}
			} else {
				return "			}
		}

		private function js_replace( $matches ){
			if(count($matches) < 4) return '';
			if( empty($matches[3]) ) return '';
			//处理链接
			$arr_html = split(',',$matches[3]);
			$href = $arr_html[0];
			$other = '';
			for($i=0; $i				$other = $arr_html[$i].", ";
			$other = rtrim($other,", ");
			$href =rtrim($href,''"');
			//处理锚点
			if(substr_count($href,'#')>0)
				return "window.open".$matches[1].$matches[2].$matches[3].$matches[4];;
			//获取html的id
			$parent_dir_num = substr_count( $href, '../');
			$relative_dirname = $this->relative_dirname;
			for($i=0; $i<$parent_dir_num; $i++) {
				$relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
			}
			$relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($href,'./');
			$txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
			//输出
			if( !empty($txtfile_id ) ) {
				if($this->moudle == 'dresult') {
					return "window.open".$matches[1].$matches[2].$this->CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid.$matches[2].','.$other.$matches[4];
				} else {
					return "window.open".$matches[1].$matches[2].$this->CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid.$matches[2].','.$other.$matches[4];
				}
			} else {
				return "window.open".$matches[1].$matches[2].$matches[3].$matches[4];
			}
		}

		private function css_replace( $matches ) {
			if(count($matches) < 5) return '';
			if( empty($matches[4]) ) return '';

			$matches[4] = rtrim($matches[4],''"/');
			//获取图片的id
			$parent_dir_num = substr_count( $matches[4], '../');
			$relative_dirname = $this->relative_dirname;
			for($i=0; $i<$parent_dir_num; $i++) {
				$relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
			}
			$relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[4],'./');
			$image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
			//输出
			if( !empty($image_id) ) {
				if($this->moudle == 'dresult') {
					return "background".$matches[1]."url".$matches[2].$matches[3].$this->CI->config->item("base_url")."cdms/".$this->moudle."/readpic/$image_id?pid=".$this->projectid .$matches[3]. $matches[5];
				} else {
					return "background".$matches[1]."url".$matches[2].$matches[3].$this->CI->config->item("base_url")."cdms/".$this->moudle."/picfile/$image_id?pid=".$this->projectid .$matches[3]. $matches[5];
				}
			} else {
				return "background".$matches[1]."url".$matches[2].$matches[3].$matches[4].$matches[3].$matches[5];
			}
		}
	}

/* End of Myreplace.php */
/* Location: /application/libraries/Myreplace.php */