📄 generator.php
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<?phpHTMLPurifier_ConfigSchema::define( 'Output', 'CommentScriptContents', true, 'bool', 'Determines whether or not HTML Purifier should attempt to fix up '. 'the contents of script tags for legacy browsers with comments. This '. 'directive was available since 2.0.0.');HTMLPurifier_ConfigSchema::defineAlias('Core', 'CommentScriptContents', 'Output', 'CommentScriptContents');// extension constraints could be factored into ConfigSchemaHTMLPurifier_ConfigSchema::define( 'Output', 'TidyFormat', false, 'bool', <<<HTML<p> Determines whether or not to run Tidy on the final output for pretty formatting reasons, such as indentation and wrap.</p><p> This can greatly improve readability for editors who are hand-editing the HTML, but is by no means necessary as HTML Purifier has already fixed all major errors the HTML may have had. Tidy is a non-default extension, and this directive will silently fail if Tidy is not available.</p><p> If you are looking to make the overall look of your page's source better, I recommend running Tidy on the entire page rather than just user-content (after all, the indentation relative to the containing blocks will be incorrect).</p><p> This directive was available since 1.1.1.</p>HTML);HTMLPurifier_ConfigSchema::defineAlias('Core', 'TidyFormat', 'Output', 'TidyFormat');HTMLPurifier_ConfigSchema::define('Output', 'Newline', null, 'string/null', '<p> Newline string to format final output with. If left null, HTML Purifier will auto-detect the default newline type of the system and use that; you can manually override it here. Remember, \r\n is Windows, \r is Mac, and \n is Unix. This directive was available since 2.0.1.</p>');/** * Generates HTML from tokens. * @todo Refactor interface so that configuration/context is determined * upon instantiation, no need for messy generateFromTokens() calls */class HTMLPurifier_Generator{ /** * Bool cache of %HTML.XHTML * @private */ var $_xhtml = true; /** * Bool cache of %Output.CommentScriptContents * @private */ var $_scriptFix = false; /** * Cache of HTMLDefinition * @private */ var $_def; /** * Generates HTML from an array of tokens. * @param $tokens Array of HTMLPurifier_Token * @param $config HTMLPurifier_Config object * @return Generated HTML */ function generateFromTokens($tokens, $config, &$context) { $html = ''; if (!$config) $config = HTMLPurifier_Config::createDefault(); $this->_scriptFix = $config->get('Output', 'CommentScriptContents'); $this->_def = $config->getHTMLDefinition(); $this->_xhtml = $this->_def->doctype->xml; if (!$tokens) return ''; for ($i = 0, $size = count($tokens); $i < $size; $i++) { if ($this->_scriptFix && $tokens[$i]->name === 'script' && $i + 2 < $size && $tokens[$i+2]->type == '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[$i++]); // We're not going to do this: it wouldn't be valid anyway //while ($tokens[$i]->name != 'script') { // $html .= $this->generateScriptFromToken($tokens[$i++]); //} } $html .= $this->generateFromToken($tokens[$i]); } if ($config->get('Output', 'TidyFormat') && extension_loaded('tidy')) { $tidy_options = array( 'indent'=> true, 'output-xhtml' => $this->_xhtml, 'show-body-only' => true, 'indent-spaces' => 2, 'wrap' => 68, ); if (version_compare(PHP_VERSION, '5', '<')) { tidy_set_encoding('utf8'); foreach ($tidy_options as $key => $value) { tidy_setopt($key, $value); } tidy_parse_string($html); tidy_clean_repair(); $html = tidy_get_output(); } else { $tidy = new Tidy; $tidy->parseString($html, $tidy_options, 'utf8'); $tidy->cleanRepair(); $html = (string) $tidy; } } // normalize newlines to system $nl = $config->get('Output', 'Newline'); if ($nl === null) $nl = PHP_EOL; $html = str_replace("\n", $nl, $html); return $html; } /** * Generates HTML from a single token. * @param $token HTMLPurifier_Token object. * @return Generated HTML */ function generateFromToken($token) { if (!isset($token->type)) return ''; if ($token->type == 'start') { $attr = $this->generateAttributes($token->attr, $token->name); return '<' . $token->name . ($attr ? ' ' : '') . $attr . '>'; } elseif ($token->type == 'end') { return '</' . $token->name . '>'; } elseif ($token->type == 'empty') { $attr = $this->generateAttributes($token->attr, $token->name); return '<' . $token->name . ($attr ? ' ' : '') . $attr . ( $this->_xhtml ? ' /': '' ) . '>'; } elseif ($token->type == 'text') { return $this->escape($token->data); } 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. */ function generateScriptFromToken($token) { if ($token->type != 'text') return $this->generateFromToken($token); // return '<!--' . "\n" . trim($token->data) . "\n" . '// -->'; // more advanced version: // thanks <http://lachy.id.au/log/2005/05/script-comments> $data = preg_replace('#//\s*$#', '', $token->data); return '<!--//--><![CDATA[//><!--' . "\n" . trim($data) . "\n" . '//--><!]]>'; } /** * Generates attribute declarations from attribute array. * @param $assoc_array_of_attributes Attribute array * @return Generate HTML fragment for insertion. */ function generateAttributes($assoc_array_of_attributes, $element) { $html = ''; foreach ($assoc_array_of_attributes as $key => $value) { if (!$this->_xhtml) { // remove namespaced attributes if (strpos($key, ':') !== false) continue; if (!empty($this->_def->info[$element]->attr[$key]->minimized)) { $html .= $key . ' '; continue; } } $html .= $key.'="'.$this->escape($value).'" '; } return rtrim($html); } /** * Escapes raw text data. * @param $string String data to escape for HTML. * @return String escaped data. */ function escape($string) { return htmlspecialchars($string, ENT_COMPAT, 'UTF-8'); } }⌨️ 快捷键说明
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