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<?php
declare(strict_types=1);
namespace Laminas\Feed;
use function in_array;
use function parse_url;
use function strpos;
class Uri
{
/** @var null|string */
protected $fragment;
/** @var null|string */
protected $host;
/** @var null|string */
protected $pass;
/** @var null|string */
protected $path;
/** @var null|int */
protected $port;
/** @var null|string */
protected $query;
/** @var null|string */
protected $scheme;
/** @var null|string */
protected $user;
/** @var null|bool */
protected $valid;
/**
* Valid schemes
*
* @var string[]
*/
protected $validSchemes = [
'http',
'https',
'file',
];
/**
* @param string $uri
*/
public function __construct($uri)
{
$parsed = parse_url($uri);
if (false === $parsed) {
$this->valid = false;
return;
}
$this->scheme = $parsed['scheme'] ?? '';
$this->host = $parsed['host'] ?? '';
$this->port = $parsed['port'] ?? null;
$this->user = $parsed['user'] ?? null;
$this->pass = $parsed['pass'] ?? null;
$this->path = $parsed['path'] ?? '';
$this->query = $parsed['query'] ?? null;
$this->fragment = $parsed['fragment'] ?? null;
}
/**
* Create an instance
*
* Useful for chained validations
*
* @param string $uri
* @return static
*/
public static function factory($uri)
{
return new static($uri);
}
/**
* Retrieve the host
*
* @return string
*/
public function getHost()
{
return $this->host;
}
/**
* Retrieve the URI path
*
* @return string
*/
public function getPath()
{
return $this->path;
}
/**
* Retrieve the scheme
*
* @return string
*/
public function getScheme()
{
return $this->scheme;
}
/**
* Is the URI valid?
*
* @return bool
*/
public function isValid()
{
if (false === $this->valid) {
return false;
}
if ($this->scheme && ! in_array($this->scheme, $this->validSchemes, true)) {
return false;
}
if ($this->host) {
if ($this->path && 0 !== strpos($this->path, '/')) {
return false;
}
return true;
}
// no host, but user and/or port... what?
if ($this->user || $this->port) {
return false;
}
if ($this->path) {
// Check path-only (no host) URI
if (0 === strpos($this->path, '//')) {
return false;
}
return true;
}
if (! ($this->query || $this->fragment)) {
// No host, path, query or fragment - this is not a valid URI
return false;
}
return true;
}
/**
* Is the URI absolute?
*
* @return bool
*/
public function isAbsolute()
{
return ! empty($this->scheme);
}
}