/**
* Extract the css files from a html code
*
* @param string $html
*
* @return string
*/
public function extractStyle($html)
{
// the CSS content
$style = ' ';
// extract the link tags, and remove them in the html code
preg_match_all('/<link([^>]*)>/isU', $html, $match);
$html = preg_replace('/<link[^>]*>/isU', '', $html);
$html = preg_replace('/<\\/link[^>]*>/isU', '', $html);
// analyse each link tag
foreach ($match[1] as $code) {
$tmp = $this->tagParser->extractTagAttributes($code);
// if type text/css => we keep it
if (isset($tmp['type']) && strtolower($tmp['type']) == 'text/css' && isset($tmp['href'])) {
// get the href
$url = $tmp['href'];
// get the content of the css file
$content = @file_get_contents($url);
// if "http://" in the url
if (strpos($url, 'http://') !== false) {
// get the domain "http://xxx/"
$url = str_replace('http://', '', $url);
$url = explode('/', $url);
$urlMain = 'http://' . $url[0] . '/';
// get the absolute url of the path
$urlSelf = $url;
unset($urlSelf[count($urlSelf) - 1]);
$urlSelf = 'http://' . implode('/', $urlSelf) . '/';
// adapt the url in the css content
$content = preg_replace('/url\\(([^\\\\][^)]*)\\)/isU', 'url(' . $urlSelf . '$1)', $content);
$content = preg_replace('/url\\((\\\\[^)]*)\\)/isU', 'url(' . $urlMain . '$1)', $content);
} else {
// @TODO correction on url in absolute on a local css content
// $content = preg_replace('/url\(([^)]*)\)/isU', 'url('.dirname($url).'/$1)', $content);
}
// add to the CSS content
$style .= $content . "\n";
}
}
// extract the style tags des tags style, and remove them in the html code
preg_match_all('/<style[^>]*>(.*)<\\/style[^>]*>/isU', $html, $match);
$html = preg_replace('/<style[^>]*>(.*)<\\/style[^>]*>/isU', '', $html);
// analyse each style tags
foreach ($match[1] as $code) {
// add to the CSS content
$code = str_replace('<!--', '', $code);
$code = str_replace('-->', '', $code);
$style .= $code . "\n";
}
//analyse the css content
$this->analyseStyle($style);
return $html;
}
/**
* @param string $code
* @param array $expected
*
* @dataProvider tagAttributesProvider
*/
public function testExtractTagAttributes($code, $expected)
{
$result = $this->parser->extractTagAttributes($code);
$this->assertEquals($expected, $result);
}
