* * * Change "< " to "< " * * Does Not: * Change poorly formatted html attributes * Fix self closing tags * Handle use of inline regular expressions in javascript * * To Do * Parse Error Handling * What to do with content after last tag? * */ class HTML extends \gp\tool\Editing\HTMLParse{ public $result = ''; public $empty_attributes = array('checked'=>1, 'compact'=>1, 'declare'=>1, 'defer'=>1, 'disabled'=>1, 'ismap'=>1, 'multiple'=>1, 'nohref'=>1, 'noresize'=>1, 'noshade'=>1, 'nowrap'=>1, 'readonly'=>1, 'selected'=>1); public $self_closing_tags = array('img'=>1, 'input'=>1, 'area'=>1, 'br'=>1, 'hr'=>1, 'link'=>1 ); public $required_attr = array( 'area'=> array('alt'=>''), 'bdo'=> array('dir'=>''), 'form'=> array('action'=>''), 'img'=> array('src'=>'','alt'=>''), 'map'=> array('name'=>''), 'meta'=> array('content'=>''), 'optgroup'=> array('label'=>''), 'param'=> array('name'=>''), 'script'=> array(), 'style'=> array('type'=>''), 'textarea'=> array('cols'=>'','rows'=>'') ); public function __construct($text){ parent::__construct($text); $this->dom_array = \gp\tool\Plugins::Filter('Html_Output',array($this->dom_array)); $this->Clean(); $this->Rebuild(); } /* * Make sure certain cms elements aren't copied into the html of pages * * a.find('.editable_area').removeAttr('class').removeAttr('id'); a.find('.ExtraEditLink').removeAttr('class').removeAttr('id'); a.find('.ExtraEditLnks').removeAttr('class').removeAttr('id'); a.find('.gp_nosave').remove(); * */ public function Clean(){ $no_save_level = 0; $no_save_levels = array(); foreach($this->dom_array as $key => $dom_element){ if( $no_save_level > 0 ){ if( is_array($dom_element) && isset($dom_element['tag']) ){ $tag = $dom_element['tag']; if( $tag{0} == '/' ){ $tag_check = substr($tag,1); if( $no_save_levels[$no_save_level] == $tag_check ){ array_pop($no_save_levels); $no_save_level--; }else{ //error? //msg('end tag not in no_save_levels'); } }elseif( !isset($this->self_closing_tags[$tag]) ){ $no_save_level++; $no_save_levels[$no_save_level] = $tag; } } $this->dom_array[$key] = false; continue; } if( !is_array($dom_element) ){ continue; } if( isset($dom_element['attributes']) && is_array($dom_element['attributes']) ){ //remove classes used by cms if( isset($dom_element['attributes']['class']) ){ $class = ' '.$dom_element['attributes']['class'].' '; $cms_element = false; if( strpos($class,' editable_area ') !== false ){ $cms_element = true; }elseif( strpos($class,' ExtraEditLink ') !== false ){ $cms_element = true; }elseif( strpos($class,' ExtraEditLnks ') !== false ){ $cms_element = true; } if( $cms_element ){ unset($this->dom_array[$key]['attributes']['class']); unset($this->dom_array[$key]['attributes']['id']); } if( strpos($class,' gp_nosave ') !== false ){ $no_save_level = 1; $no_save_levels[1] = $dom_element['tag']; $this->dom_array[$key] = false; } } //remove javascript from links if( isset($dom_element['attributes']['href']) ){ $href = $dom_element['attributes']['href']; if( stripos(ltrim($href),'javascript') === 0 ){ $this->dom_array[$key]['attributes']['href'] = ''; } if( stripos(ltrim($href),'vbscript') === 0 ){ $this->dom_array[$key]['attributes']['href'] = ''; } } } } } /** * Rebuild the html content from the $dom_array * */ public function Rebuild(){ $this->result = ''; $open_tags = array(); foreach($this->dom_array as $dom_element){ if( $dom_element === false ){ continue; } if( !is_array($dom_element) ){ $this->result .= $dom_element; continue; } if( isset($dom_element['comment']) ){ $this->result .= ''; continue; } if( isset($dom_element['tag']) ){ $this->result .= $this->BuildTag($dom_element); } } } /** * Rebuild an html tag * */ public function BuildTag($dom_element){ $tag = strtolower($dom_element['tag']); $result = '<'.$tag; if( isset($dom_element['attributes']) && is_array($dom_element['attributes']) ){ $result .= $this->BuildAttributes($tag, $dom_element); } if( isset($this->self_closing_tags[$tag]) ){ $result .= ' />'; }elseif( isset($dom_element['self_closing']) && $dom_element['self_closing'] ){ $result .= ' />'; }else{ $result .= '>'; } return $result; } /** * Rebuild a list of attributes * */ public function BuildAttributes($tag, $dom_element){ $result = ''; if( isset($this->required_attr[$tag]) && is_array($this->required_attr[$tag]) ){ $dom_element['attributes'] += $this->required_attr[$tag]; } foreach($dom_element['attributes'] as $attr_name => $attr_value){ if( is_null($attr_value) || isset($this->empty_attributes[$attr_name]) ){ $result .= ' '.$attr_name; continue; } $result .= ' '.strtolower($attr_name).'="'.$this->htmlspecialchars($attr_value).'"'; } return $result; } public function htmlspecialchars($text){ return htmlspecialchars($text,ENT_COMPAT,'UTF-8',false); } }