public function libUrl(array $args, Compiler $compiler)
{
// Function has a single parameter.
$parsed = reset($args);
if (!$parsed) {
$this->throwError('url() is missing parameter');
}
// Compile parsed value to string.
$url = trim($compiler->compileValue($parsed), '\'"');
// Handle ../ inside CSS files (points to current theme).
$uri = strpos($url, '../') === 0 ? 'gantry-theme://' . substr($url, 3) : $url;
// Generate URL, failed streams will be kept as they are to allow users to find issues.
$url = Document::url($uri) ?: $url;
// Changes absolute URIs to relative to make the path to work even if the site gets moved.
if ($url[0] == '/' && $this->basePath) {
$url = Folder::getRelativePathDotDot($url, $this->basePath);
}
// Return valid CSS.
return "url('{$url}')";
}
/**
* @param string $name Name of function to unregister.
* @return $this
*/
public function unregisterFunction($name)
{
$this->compiler->unregisterFunction($name);
return $this;
}