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<?php
/**
* Converts an array-represented URL to a string
*
* Source: http://php.net/manual/en/function.parse-url.php#106731
*
* @see http://php.net/manual/en/function.parse-url.php
*
* @param array $parsedUrl an array-represented URL
*
* @return string the string representation of the URL
*/
function unparse_url($parsedUrl)
{
$scheme = isset($parsedUrl['scheme']) ? $parsedUrl['scheme'].'://' : '';
$host = isset($parsedUrl['host']) ? $parsedUrl['host'] : '';
$port = isset($parsedUrl['port']) ? ':'.$parsedUrl['port'] : '';
$user = isset($parsedUrl['user']) ? $parsedUrl['user'] : '';
$pass = isset($parsedUrl['pass']) ? ':'.$parsedUrl['pass'] : '';
$pass = ($user || $pass) ? "$pass@" : '';
$path = isset($parsedUrl['path']) ? $parsedUrl['path'] : '';
$query = isset($parsedUrl['query']) ? '?'.$parsedUrl['query'] : '';
$fragment = isset($parsedUrl['fragment']) ? '#'.$parsedUrl['fragment'] : '';
return "$scheme$user$pass$host$port$path$query$fragment";
}
/**
* Removes undesired query parameters and fragments
*
* @param string url UrlUtils to be cleaned
*
* @return string the string representation of this URL after cleanup
*/
function cleanup_url($url)
{
$obj_url = new \Shaarli\Http\Url($url);
return $obj_url->cleanup();
}
/**
* Get URL scheme.
*
* @param string url UrlUtils for which the scheme is requested
*
* @return mixed the URL scheme or false if none is provided.
*/
function get_url_scheme($url)
{
$obj_url = new \Shaarli\Http\Url($url);
return $obj_url->getScheme();
}
/**
* Adds a trailing slash at the end of URL if necessary.
*
* @param string $url URL to check/edit.
*
* @return string $url URL with a end trailing slash.
*/
function add_trailing_slash($url)
{
return $url . (!endsWith($url, '/') ? '/' : '');
}
/**
* Replace not whitelisted protocols by 'http://' from given URL.
*
* @param string $url URL to clean
* @param array $protocols List of allowed protocols (aside from http(s)).
*
* @return string URL with allowed protocol
*/
function whitelist_protocols($url, $protocols)
{
if (startsWith($url, '?') || startsWith($url, '/') || startsWith($url, '#')) {
return $url;
}
$protocols = array_merge(['http', 'https'], $protocols);
$protocol = preg_match('#^(\w+):/?/?#', $url, $match);
// Protocol not allowed: we remove it and replace it with http
if ($protocol === 1 && ! in_array($match[1], $protocols)) {
$url = str_replace($match[0], 'http://', $url);
} elseif ($protocol !== 1) {
$url = 'http://' . $url;
}
return $url;
}
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