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- <?php
- /**
- * This file contains the base class for utilizing an instance of the
- * W3 HTML Validator.
- *
- * PHP versions 5
- *
- * @category Services
- * @package Services_W3C_HTMLValidator
- * @author Brett Bieber <brett.bieber@gmail.com>
- * @license http://www.opensource.org/licenses/bsd-license.php BSD
- * @version CVS: $id$
- * @link http://pear.php.net/package/Services_W3C_HTMLValidator
- * @since File available since Release 0.2.0
- */
-
- /**
- * require the HTTP_Request class for sending requests to the validator.
- */
- require_once 'HTTP/Request.php';
-
- /**
- * Uses response object.
- */
- require_once 'Services/W3C/HTMLValidator/Response.php';
-
- require_once 'Services/W3C/HTMLValidator/Error.php';
-
- require_once 'Services/W3C/HTMLValidator/Warning.php';
-
- /**
- * A simple class for utilizing the W3C HTML Validator service.
- *
- * @category Services
- * @package Services_W3C_HTMLValidator
- * @author Brett Bieber <brett.bieber@gmail.com>
- * @license http://www.opensource.org/licenses/bsd-license.php BSD
- * @link http://pear.php.net/package/Services_W3C_HTMLValidator
- */
- class Services_W3C_HTMLValidator
- {
- /**
- * URI to the w3 validator.
- *
- * @var string
- */
- public $validator_uri = 'http://validator.w3.org/check';
-
- /**
- * The URL of the document to validate
- * @var string
- */
- public $uri;
-
- /**
- * Internally used filename of a file to upload to the validator
- * POSTed as multipart/form-data
- * @var string
- */
- public $uploaded_file;
-
- /**
- * HTML fragment to validate.
- *
- * Full documents only. At the moment, will only work if data is sent with the
- * UTF-8 encoding.
- * @var string
- */
- public $fragment;
-
- /**
- * Output format
- *
- * Triggers the various outputs formats of the validator. If unset, the usual
- * Web format will be sent. If set to soap12, the SOAP1.2 interface will be
- * triggered. See below for the SOAP 1.2 response format description.
- */
- public $output = 'soap12';
-
- /**
- * Character encoding
- *
- * Character encoding override: Specify the character encoding to use when
- * parsing the document. When used with the auxiliary parameter fbc set to 1,
- * the given encoding will only be used as a fallback value, in case the charset
- * is absent or unrecognized. Note that this parameter is ignored if validating
- * a fragment with the direct input interface.
- * @var string
- */
- public $charset;
-
- /**
- * Fall Back Character Set
- *
- * When no character encoding is detected in the document, use the value in
- * $charset as the fallback character set.
- *
- * @var bool
- */
- public $fbc;
-
- /**
- * Document type
- *
- * Document Type override: Specify the Document Type (DOCTYPE) to use when
- * parsing the document. When used with the auxiliary parameter fbd set to 1,
- * the given document type will only be used as a fallback value, in case the
- * document's DOCTYPE declaration is missing or unrecognized.
- * @var string
- */
- public $doctype;
-
- /**
- * Fall back doctype
- *
- * When set to 1, use the value stored in $doctype when the document type
- * cannot be automatically determined.
- *
- * @var bool
- */
- public $fbd;
-
- /**
- * Verbose output
- *
- * In the web interface, when set to 1, will make error messages, explanations
- * and other diagnostics more verbose.
- * In SOAP output, does not have any impact.
- * @var bool
- */
- public $verbose = false;
-
- /**
- * Show source
- *
- * In the web interface, triggers the display of the source after the validation
- * results. In SOAP output, does not have any impact.
- * @var bool
- */
- public $ss = false;
-
- /**
- * outline
- *
- * In the web interface, when set to 1, triggers the display of the document
- * outline after the validation results. In SOAP output, does not have any
- * impact.
- * @var bool
- */
- public $outline = false;
-
- /**
- * HTTP_Request object.
- * @var object
- */
- protected $request;
-
- /**
- * Constructor for the class.
- *
- * @param array $options An array of options
- */
- function __construct($options = array())
- {
- $this->setOptions($options);
- }
-
- /**
- * Sets options for the class.
- * Pass an associative array of options for the class.
- *
- * @param array $options array of options
- *
- * @return void
- */
- function setOptions($options)
- {
- foreach ($options as $option=>$val) {
- $this->$option = $val;
- }
- }
-
- /**
- * Validates a given URI
- *
- * Executes the validator using the current parameters and returns a Response
- * object on success.
- *
- * @param string $uri The address to the page to validate ex: http://example.com/
- *
- * @return mixed object Services_W3C_HTMLValidator | bool false
- */
- function validate($uri)
- {
- $this->uri = $uri;
- $this->buildRequest('uri');
- if ($this->sendRequest()) {
- return $this->parseSOAP12Response($this->request->getResponseBody());
- } else {
- return false;
- }
- }
-
- /**
- * Validates the local file
- *
- * Requests validation on the local file, from an instance of the W3C validator.
- * The file is posted to the W3 validator using multipart/form-data.
- *
- * @param string $file file to be validated.
- *
- * @return mixed object Services_W3C_HTMLValidator | bool fals
- */
- function validateFile($file)
- {
- if (file_exists($file)) {
- $this->uploaded_file = $file;
- $this->buildRequest('file');
- if ($this->sendRequest()) {
- return $this->parseSOAP12Response($this->request->getResponseBody());
- } else {
- return false;
- }
- } else {
- // No such file!
- return false;
- }
- }
-
- /**
- * Validate an html string
- *
- * @param string $html full html document fragment
- *
- * @return mixed object Services_W3C_HTMLValidator | bool fals
- */
- function validateFragment($html)
- {
- $this->fragment = $html;
- $this->buildRequest('fragment');
- if ($this->sendRequest()) {
- return $this->parseSOAP12Response($this->request->getResponseBody());
- } else {
- return false;
- }
- }
-
- /**
- * Prepares a request object to send to the validator.
- *
- * @param string $type uri, file, or fragment
- *
- * @return void
- */
- protected function buildRequest($type = 'uri')
- {
- $this->request = new HTTP_Request();
- $this->request->setURL($this->validator_uri);
- switch ($type) {
- case 'uri':
- default:
- $this->request->setMethod(HTTP_REQUEST_METHOD_GET);
- $this->request->addQueryString('uri', $this->uri);
- $method = 'addQueryString';
- break;
- case 'file':
- $this->request->setMethod(HTTP_REQUEST_METHOD_POST);
- $this->request->addFile('uploaded_file',
- $this->uploaded_file,
- 'text/html');
- $method = 'addPostData';
- break;
- case 'fragment':
- $this->request->setMethod(HTTP_REQUEST_METHOD_POST);
- $this->request->addPostData('fragment', $this->fragment);
- $method = 'addPostData';
- break;
- }
-
- foreach (array( 'charset',
- 'fbc',
- 'doctype',
- 'fbd',
- 'verbose',
- 'ss',
- 'outline',
- 'output') as $option) {
- if (isset($this->$option)) {
- if (is_bool($this->$option)) {
- $this->request->$method($option, intval($this->$option));
- } else {
- $this->request->$method($option, $this->$option);
- }
- }
- }
- }
-
- /**
- * Actually sends the request to the HTML Validator service
- *
- * @return bool true | false
- */
- protected function sendRequest()
- {
- if (!PEAR::isError($this->request->sendRequest())) {
- return true;
- } else {
- return false;
- }
- }
-
- /**
- * Parse an XML response from the validator
- *
- * This function parses a SOAP 1.2 response xml string from the validator.
- *
- * @param string $xml The raw soap12 XML response from the validator.
- *
- * @return mixed object Services_W3C_HTMLValidator_Response | bool false
- */
- static function parseSOAP12Response($xml)
- {
- $doc = new DOMDocument();
- if ($doc->loadXML($xml)) {
- $response = new Services_W3C_HTMLValidator_Response();
-
- // Get the standard CDATA elements
- foreach (array('uri','checkedby','doctype','charset') as $var) {
- $element = $doc->getElementsByTagName($var);
- if ($element->length) {
- $response->$var = $element->item(0)->nodeValue;
- }
- }
- // Handle the bool element validity
- $element = $doc->getElementsByTagName('validity');
- if ($element->length &&
- $element->item(0)->nodeValue == 'true') {
- $response->validity = true;
- } else {
- $response->validity = false;
- }
- if (!$response->validity) {
- $errors = $doc->getElementsByTagName('error');
- foreach ($errors as $error) {
- $response->errors[] =
- new Services_W3C_HTMLValidator_Error($error);
- }
- }
- $warnings = $doc->getElementsByTagName('warning');
- foreach ($warnings as $warning) {
- $response->warnings[] =
- new Services_W3C_HTMLValidator_Warning($warning);
- }
- return $response;
- } else {
- // Could not load the XML.
- return false;
- }
- }
- }
- ?>