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- <?php
- /**
- * Copyright (c) 2007, Laurent Laville <pear@laurent-laville.org>
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of the authors nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * PHP version 5
- *
- * @category Web_Services
- * @package Services_W3C_CSSValidator
- * @author Laurent Laville <pear@laurent-laville.org>
- * @license http://www.opensource.org/licenses/bsd-license.php BSD
- * @version CVS: $id$
- * @link http://pear.php.net/package/Services_W3C_CSSValidator
- * @since File available since Release 0.1.0
- */
-
- require_once 'HTTP/Request.php';
-
- require_once 'Services/W3C/CSSValidator/Response.php';
- require_once 'Services/W3C/CSSValidator/Error.php';
- require_once 'Services/W3C/CSSValidator/Warning.php';
-
- /**
- * Base class for utilizing the W3C CSS Validator service.
- *
- * @category Web_Services
- * @package Services_W3C_CSSValidator
- * @author Laurent Laville <pear@laurent-laville.org>
- * @license http://www.opensource.org/licenses/bsd-license.php BSD
- * @link http://pear.php.net/package/Services_W3C_CSSValidator
- * @since Class available since Release 0.1.0
- */
- class Services_W3C_CSSValidator
- {
- /**
- * URI to the W3C validator.
- *
- * @var string
- */
- const VALIDATOR_URI = 'http://jigsaw.w3.org/css-validator/validator';
-
- /**
- * The URL of the document to validate
- *
- * @var string
- */
- protected $uri;
-
- /**
- * Internally used filename of a file to upload to the validator
- * POSTed as multipart/form-data
- *
- * @var string
- */
- protected $uploaded_file;
-
- /**
- * CSS fragment to validate.
- *
- * Full documents only. At the moment, will only work if data is sent with the
- * UTF-8 encoding.
- *
- * @var string
- */
- protected $fragment;
-
- /**
- * Options list (available with default values) :
- *
- * output - Output format
- * Triggers the various outputs formats of the validator. If unset,
- * the usual Web html format will be sent. If set to soap12,
- * the SOAP1.2 interface will be triggered.
- *
- * warning - Warning level
- * Default value is '1', and value could one of these :
- * <ul>
- * <li>2</li> all warning messages
- * <li>1</li> normal report
- * <li>0</li> most important warning messages
- * <li>no</li> none messages
- * </ul>
- *
- * profile - Profile
- * Default value is 'css21', and value could one of these :
- * <ul>
- * <li>none</li> none profile
- * <li>css1</li> CSS level 1
- * <li>css2</li> CSS level 2
- * <li>css21</li> CSS level 2.1
- * <li>css3</li> CSS level 3
- * <li>svg</li> SVG
- * <li>svgbasic</li> SVG Basic
- * <li>svgtiny</li> SVG Tiny
- * <li>mobile</li> Mobile
- * <li>atsc-tv</li> ATSC TV
- * <li>tv</li> TV
- * </ul>
- *
- * usermedium - User medium
- * Default value is 'all', and value could one of these :
- * <ul>
- * <li>all</li>
- * <li>aural</li>
- * <li>braille</li>
- * <li>embossed</li>
- * <li>handheld</li>
- * <li>print</li>
- * <li>projection</li>
- * <li>screen</li>
- * <li>tty</li>
- * <li>tv</li>
- * <li>presentation</li>
- * </ul>
- *
- * lang - Language used for response messages
- * Default value is 'en', and value could one of these :
- * en, fr, ja, es, zh-cn, nl, de
- *
- * @var array
- */
- protected $options;
-
- /**
- * HTTP_Request object.
- *
- * @var object
- */
- protected $request;
-
- /**
- * Constructor for the class.
- *
- * @return void
- */
- public function __construct()
- {
- $this->options = array('output' => 'soap12', 'warning' => '1',
- 'profile' => 'css21', 'usermedium' => 'all', 'lang' => 'en');
- }
-
- /**
- * Sets options for the class.
- *
- * @param string $option Name of option to set
- * @param string $val Value of option to set
- *
- * @return void
- */
- public function __set($option, $val)
- {
- // properties that can be set directly
- static $setting_allowed = array('uri');
-
- if (isset($this->options[$option])) {
- $this->options[$option] = $val;
- } elseif (property_exists($this, $option)) {
- if (in_array($option, $setting_allowed)) {
- $this->$option = $val;
- }
- }
- }
-
- /**
- * Gets options for the class.
- *
- * @param string $option Name of option to set
- *
- * @return mixed
- */
- public function __get($option)
- {
- // properties that can be get directly
- static $getting_allowed = array('uri');
-
- $r = null;
- if (isset($this->options[$option])) {
- $r = $this->options[$option];
- } elseif (property_exists($this, $option)) {
- if (in_array($option, $getting_allowed)) {
- $r = $this->$option;
- }
- }
- return $r;
- }
-
- /**
- * Validates a given URI
- *
- * Executes the validator using the current parameters and returns a Response
- * object on success.
- *
- * @param string $uri The address to the page to validate ex: http://example.com/
- *
- * @return mixed object Services_W3C_CSSValidator_Response
- * if web service call successfull,
- * boolean FALSE otherwise
- */
- public function validateUri($uri)
- {
- $this->uri = $uri;
- $this->buildRequest('uri');
- if ($this->sendRequest()) {
- return Services_W3C_CSSValidator::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 W3C validator using multipart/form-data.
- *
- * @param string $file file to be validated.
- *
- * @return mixed object Services_W3C_CSSValidator_Response
- * if web service call successfull,
- * boolean FALSE otherwise
- */
- public function validateFile($file)
- {
- if (file_exists($file)) {
- $this->uploaded_file = $file;
- $this->buildRequest('file'); //return $this->request;
- if ($this->sendRequest()) {
- return Services_W3C_CSSValidator::parseSOAP12Response($this
- ->request->getResponseBody());
- } else {
- return false;
- }
- } else {
- return false;
- }
- }
-
- /**
- * Validate an html string
- *
- * @param string $css Full css document fragment
- *
- * @return mixed object Services_W3C_CSSValidator_Response
- * if web service call successfull,
- * boolean FALSE otherwise
- */
- public function validateFragment($css)
- {
- $this->fragment = $css;
- $this->buildRequest('fragment');
- if ($this->sendRequest()) {
- return Services_W3C_CSSValidator::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();
- $this->request->setURL(self::VALIDATOR_URI);
- switch ($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('file',
- $this->uploaded_file,
- 'text/css');
- $method = 'addPostData';
- break;
- case 'fragment':
- $this->request->setMethod(HTTP_REQUEST_METHOD_GET);
- $this->request->addQueryString('text', $this->fragment);
- $method = 'addQueryString';
- break;
- }
-
- $options = array('output', 'warning', 'profile', 'usermedium', 'lang');
- foreach ($options as $option) {
- if (isset($this->options[$option])) {
- if (is_bool($this->options[$option])) {
- $this->request->$method($option,
- intval($this->options[$option]));
- } else {
- $this->request->$method($option, $this->options[$option]);
- }
- }
- }
- }
-
- /**
- * Actually sends the request to the CSS Validator service
- *
- * @return bool TRUE if request was sent successfully, FALSE otherwise
- */
- protected function sendRequest()
- {
- if (PEAR::isError($this->request->sendRequest())) {
- return false;
- } else {
- return true;
- }
- }
-
- /**
- * Parse an XML response from the validator
- *
- * This function parses a SOAP 1.2 response xml string from the validator.
- *
- * @param string $xml The raw soap12 XML response from the validator.
- *
- * @return mixed object Services_W3C_CSSValidator_Response
- * if parsing soap12 response successfully,
- * boolean FALSE otherwise
- */
- protected static function parseSOAP12Response($xml)
- {
- $doc = new DOMDocument();
- // try to load soap 1.2 xml response, and suppress warning reports if any
- if (@$doc->loadXML($xml)) {
- $response = new Services_W3C_CSSValidator_Response();
-
- // Get the standard CDATA elements
- $cdata = array('uri', 'checkedby', 'csslevel', 'date');
- foreach ($cdata 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) {
- $response->addError(new
- Services_W3C_CSSValidator_Error($error));
- }
- }
- $warnings = $doc->getElementsByTagName('warning');
- foreach ($warnings as $warning) {
- $response->addWarning(new
- Services_W3C_CSSValidator_Warning($warning));
- }
- return $response;
- } else {
- // Could not load the XML document
- return false;
- }
- }
- }
- ?>