/**
* Converts a relative URL to an absolute URL relative to a given URL.
*
* If an Absolute URL is provided, no processing of that URL is done.
*
* @since 3.4.0
*
* @static
* @access public
*
* @param string $maybe_relative_path The URL which might be relative
* @param string $url The URL which $maybe_relative_path is relative to
* @return string An Absolute URL, in a failure condition where the URL cannot be parsed, the relative URL will be returned.
*/
public static function make_absolute_url($maybe_relative_path, $url)
{
if (empty($url)) {
return $maybe_relative_path;
}
if (!($url_parts = WP_HTTP::parse_url($url))) {
return $maybe_relative_path;
}
if (!($relative_url_parts = WP_HTTP::parse_url($maybe_relative_path))) {
return $maybe_relative_path;
}
// Check for a scheme on the 'relative' url
if (!empty($relative_url_parts['scheme'])) {
return $maybe_relative_path;
}
$absolute_path = $url_parts['scheme'] . '://';
// Schemeless URL's will make it this far, so we check for a host in the relative url and convert it to a protocol-url
if (isset($relative_url_parts['host'])) {
$absolute_path .= $relative_url_parts['host'];
if (isset($relative_url_parts['port'])) {
$absolute_path .= ':' . $relative_url_parts['port'];
}
} else {
$absolute_path .= $url_parts['host'];
if (isset($url_parts['port'])) {
$absolute_path .= ':' . $url_parts['port'];
}
}
// Start off with the Absolute URL path.
$path = !empty($url_parts['path']) ? $url_parts['path'] : '/';
// If it's a root-relative path, then great.
if (!empty($relative_url_parts['path']) && '/' == $relative_url_parts['path'][0]) {
$path = $relative_url_parts['path'];
// Else it's a relative path.
} elseif (!empty($relative_url_parts['path'])) {
// Strip off any file components from the absolute path.
$path = substr($path, 0, strrpos($path, '/') + 1);
// Build the new path.
$path .= $relative_url_parts['path'];
// Strip all /path/../ out of the path.
while (strpos($path, '../') > 1) {
$path = preg_replace('![^/]+/\\.\\./!', '', $path);
}
// Strip any final leading ../ from the path.
$path = preg_replace('!^/(\\.\\./)+!', '', $path);
}
// Add the Query string.
if (!empty($relative_url_parts['query'])) {
$path .= '?' . $relative_url_parts['query'];
}
return $absolute_path . '/' . ltrim($path, '/');
}
public static function parse_url($url)
{
return parent::parse_url($url);
}
