/**
* Get the character set from the current web page
*
*
* @return string|null
*/
public function getCharacterSet()
{
$this->isContentTypeMalformed = false;
$metaContentTypeSelectors = array('meta[http-equiv=Content-Type]' => false, 'meta[http-equiv=content-type]' => false, 'meta[name=Content-Type]' => true);
foreach ($metaContentTypeSelectors as $metaContentTypeSelector => $isMalformed) {
$contentTypeString = null;
@$this->getDomQuery($metaContentTypeSelector)->each(function ($index, \DOMElement $domElement) use(&$contentTypeString) {
$contentTypeString = $domElement->getAttribute('content');
});
if (is_string($contentTypeString)) {
$mediaTypeParser = new InternetMediaTypeParser();
$mediaTypeParser->setIgnoreInvalidAttributes(true);
$mediaTypeParser->setAttemptToRecoverFromInvalidInternalCharacter(true);
/* @var $mediaType InternetMediaType */
try {
$mediaType = $mediaTypeParser->parse($contentTypeString);
if ($mediaType->hasParameter('charset')) {
$this->isContentTypeMalformed = $isMalformed;
return (string) $mediaType->getParameter('charset')->getValue();
}
} catch (\webignition\InternetMediaType\Parser\TypeParserException $typeParserException) {
// Occurs when we can't parse the in-markup content type
// Ignore such exceptions to treat this as having no in-markup content type
}
}
}
$charsetString = '';
@$this->getDomQuery('meta[charset]')->each(function ($index, \DOMElement $domElement) use(&$charsetString) {
$charsetString = $domElement->getAttribute('charset');
});
if (is_string($charsetString) && $charsetString !== '') {
return $charsetString;
}
$contentTypeString = null;
@$this->getDomQuery('meta[name=Content-Type]')->each(function ($index, \DOMElement $domElement) use(&$contentTypeString) {
$contentTypeString = $domElement->getAttribute('content');
});
return null;
}
/**
*
* @param HttpResponse $response
* @return \webignition\InternetMediaType\InternetMediaType
*/
private function getContentTypeFromResponse(HttpResponse $response)
{
$mediaTypeParser = new InternetMediaTypeParser();
$mediaTypeParser->setAttemptToRecoverFromInvalidInternalCharacter(true);
$mediaTypeParser->setIgnoreInvalidAttributes(true);
return $mediaTypeParser->parse($response->getHeader('content-type'));
}
