/**
* Transform a URL depending on a given $baseUrl and how the
* rendering engine is considering them.
*
* @param string $url A given URL (Uniform Resource Locator).
* @param string $baseUrl a baseUrl (xml:base).
* @return string A transformed URL.
*/
protected function transformUri($url, $baseUrl)
{
// Only relative URIs must be transformed while
// taking xml:base into account.
if (Url::isRelative($url) === false) {
return $url;
}
$xmlBasePolicy = $this->getRenderingEngine()->getXmlBasePolicy();
switch ($xmlBasePolicy) {
case AbstractMarkupRenderingEngine::XMLBASE_PROCESS:
if (empty($baseUrl) === false) {
return Url::rtrim($baseUrl) . '/' . Url::ltrim($url);
} else {
return $url;
}
break;
default:
return $url;
break;
}
}
/**
* Resolve what is the base URL to be used for the currently explored component.
*
* @return string A URL or the empty string ('') if no base URL could be resolved.
*/
protected function resolveXmlBase()
{
$stack = $this->getXmlBaseStack();
$stack->rewind();
$resolvedBase = '';
while ($stack->valid() === true) {
if (($currentBase = $stack->current()) !== '') {
if ($resolvedBase === '') {
$resolvedBase = $currentBase;
} else {
$resolvedBase = Url::rtrim($currentBase) . '/' . Url::ltrim($resolvedBase);
}
}
$stack->next();
}
if ($stack->count() > 0) {
$stack->pop();
}
return $resolvedBase;
}
/**
* Resolve include components.
*
* After the item has been loaded using the load or loadFromString method,
* the include components can be resolved by calling this method. Files will
* be included following the rules described by the XInclude specification.
*
* @param boolean $validate Whether or not validate files being included.
* @throws \LogicException If the method is called prior the load or loadFromString method was called.
* @throws \qtism\data\storage\xml\XmlStorageException If an error occured while parsing or validating files to be included.
*/
public function xInclude($validate = false)
{
if (($root = $this->getDocumentComponent()) !== false) {
$baseUri = str_replace('\\', '/', $this->getDomDocument()->documentElement->baseURI);
$pathinfo = pathinfo($baseUri);
$basePath = $pathinfo['dirname'];
$iterator = new QtiComponentIterator($root, array('include'));
foreach ($iterator as $include) {
$parent = $iterator->parent();
// Is the parent something we can deal with for replacement?
$reflection = new ReflectionClass($parent);
if ($reflection->hasMethod('getContent') === true && $parent->getContent() instanceof QtiComponentCollection) {
$href = $include->getHref();
if (Url::isRelative($href) === true) {
$href = Url::rtrim($basePath) . '/' . Url::ltrim($href);
$doc = new XmlDocument();
$doc->load($href, $validate);
$includeRoot = $doc->getDocumentComponent();
if ($includeRoot instanceof Flow) {
// Derive xml:base...
$xmlBase = Url::ltrim(str_replace($basePath, '', $href));
$xmlBasePathInfo = pathinfo($xmlBase);
if ($xmlBasePathInfo['dirname'] !== '.') {
$includeRoot->setXmlBase($xmlBasePathInfo['dirname'] . '/');
}
}
$parent->getContent()->replace($include, $includeRoot);
}
}
}
} else {
$msg = "Cannot include fragments prior to loading any file.";
throw new LogicException($msg);
}
}
public function testRtrim()
{
$this->assertEquals("/hello", Url::rtrim("/hello/\n"));
}
