tags */ private $_scriptFix = false; /** * Cache of HTMLDefinition during HTML output to determine whether or * not attributes should be minimized. */ private $_def; /** * Cache of %Output.SortAttr */ private $_sortAttr; /** * Cache of %Output.FlashCompat */ private $_flashCompat; /** * Stack for keeping track of object information when outputting IE * compatibility code. */ private $_flashStack = array(); /** * Configuration for the generator */ protected $config; /** * @param $config Instance of HTMLPurifier_Config * @param $context Instance of HTMLPurifier_Context */ public function __construct($config, $context) { $this->config = $config; $this->_scriptFix = $config->get('Output.CommentScriptContents'); $this->_sortAttr = $config->get('Output.SortAttr'); $this->_flashCompat = $config->get('Output.FlashCompat'); $this->_def = $config->getHTMLDefinition(); $this->_xhtml = $this->_def->doctype->xml; } /** * Generates HTML from an array of tokens. * @param $tokens Array of HTMLPurifier_Token * @param $config HTMLPurifier_Config object * @return Generated HTML */ public function generateFromTokens($tokens) { if (!$tokens) return ''; // Basic algorithm $html = ''; for ($i = 0, $size = count($tokens); $i < $size; $i++) { if ($this->_scriptFix && $tokens[$i]->name === 'script' && $i + 2 < $size && $tokens[$i+2] instanceof HTMLPurifier_Token_End) { // script special case // the contents of the script block must be ONE token // for this to work. $html .= $this->generateFromToken($tokens[$i++]); $html .= $this->generateScriptFromToken($tokens[$i++]); } $html .= $this->generateFromToken($tokens[$i]); } // Tidy cleanup if (extension_loaded('tidy') && $this->config->get('Output.TidyFormat')) { $tidy = new Tidy; $tidy->parseString($html, array( 'indent'=> true, 'output-xhtml' => $this->_xhtml, 'show-body-only' => true, 'indent-spaces' => 2, 'wrap' => 68, ), 'utf8'); $tidy->cleanRepair(); $html = (string) $tidy; // explicit cast necessary } // Normalize newlines to system defined value $nl = $this->config->get('Output.Newline'); if ($nl === null) $nl = PHP_EOL; if ($nl !== "\n") $html = str_replace("\n", $nl, $html); return $html; } /** * Generates HTML from a single token. * @param $token HTMLPurifier_Token object. * @return Generated HTML */ public function generateFromToken($token) { if (!$token instanceof HTMLPurifier_Token) { trigger_error('Cannot generate HTML from non-HTMLPurifier_Token object', E_USER_WARNING); return ''; } elseif ($token instanceof HTMLPurifier_Token_Start) { $attr = $this->generateAttributes($token->attr, $token->name); if ($this->_flashCompat) { if ($token->name == "object") { $flash = new stdclass(); $flash->attr = $token->attr; $flash->param = array(); $this->_flashStack[] = $flash; } } return '<' . $token->name . ($attr ? ' ' : '') . $attr . '>'; } elseif ($token instanceof HTMLPurifier_Token_End) { $_extra = ''; if ($this->_flashCompat) { if ($token->name == "object" && !empty($this->_flashStack)) { $flash = array_pop($this->_flashStack); $compat_token = new HTMLPurifier_Token_Empty("embed"); foreach ($flash->attr as $name => $val) { if ($name == "classid") continue; if ($name == "type") continue; if ($name == "data") $name = "src"; $compat_token->attr[$name] = $val; } foreach ($flash->param as $name => $val) { if ($name == "movie") $name = "src"; $compat_token->attr[$name] = $val; } $_extra = ""; } } return $_extra . 'name . '>'; } elseif ($token instanceof HTMLPurifier_Token_Empty) { if ($this->_flashCompat && $token->name == "param" && !empty($this->_flashStack)) { $this->_flashStack[count($this->_flashStack)-1]->param[$token->attr['name']] = $token->attr['value']; } $attr = $this->generateAttributes($token->attr, $token->name); return '<' . $token->name . ($attr ? ' ' : '') . $attr . ( $this->_xhtml ? ' /': '' ) //
v.
. '>'; } elseif ($token instanceof HTMLPurifier_Token_Text) { return $this->escape($token->data, ENT_NOQUOTES); } elseif ($token instanceof HTMLPurifier_Token_Comment) { return ''; } else { return ''; } } /** * Special case processor for the contents of script tags * @warning This runs into problems if there's already a literal * --> somewhere inside the script contents. */ public function generateScriptFromToken($token) { if (!$token instanceof HTMLPurifier_Token_Text) return $this->generateFromToken($token); // Thanks $data = preg_replace('#//\s*$#', '', $token->data); return ''; } /** * Generates attribute declarations from attribute array. * @note This does not include the leading or trailing space. * @param $assoc_array_of_attributes Attribute array * @param $element Name of element attributes are for, used to check * attribute minimization. * @return Generate HTML fragment for insertion. */ public function generateAttributes($assoc_array_of_attributes, $element = false) { $html = ''; if ($this->_sortAttr) ksort($assoc_array_of_attributes); foreach ($assoc_array_of_attributes as $key => $value) { if (!$this->_xhtml) { // Remove namespaced attributes if (strpos($key, ':') !== false) continue; // Check if we should minimize the attribute: val="val" -> val if ($element && !empty($this->_def->info[$element]->attr[$key]->minimized)) { $html .= $key . ' '; continue; } } $html .= $key.'="'.$this->escape($value).'" '; } return rtrim($html); } /** * Escapes raw text data. * @todo This really ought to be protected, but until we have a facility * for properly generating HTML here w/o using tokens, it stays * public. * @param $string String data to escape for HTML. * @param $quote Quoting style, like htmlspecialchars. ENT_NOQUOTES is * permissible for non-attribute output. * @return String escaped data. */ public function escape($string, $quote = null) { // Workaround for APC bug on Mac Leopard reported by sidepodcast // http://htmlpurifier.org/phorum/read.php?3,4823,4846 if ($quote === null) $quote = ENT_COMPAT; return htmlspecialchars($string, $quote, 'UTF-8'); } } // vim: et sw=4 sts=4