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<?php
namespace Guzzle\Http;
use Guzzle\Common\Exception\InvalidArgumentException;
/**
* Parses and generates URLs based on URL parts. In favor of performance, URL parts are not validated.
*/
class Url
{
protected $scheme;
protected $host;
protected $port;
protected $username;
protected $password;
protected $path = '';
protected $fragment;
/** @var QueryString Query part of the URL */
protected $query;
/**
* Factory method to create a new URL from a URL string
*
* @param string $url Full URL used to create a Url object
*
* @return Url
* @throws InvalidArgumentException
*/
public static function factory($url)
{
static $defaults = array('scheme' => null, 'host' => null, 'path' => null, 'port' => null, 'query' => null,
'user' => null, 'pass' => null, 'fragment' => null);
if (false === ($parts = parse_url($url))) {
throw new InvalidArgumentException('Was unable to parse malformed url: ' . $url);
}
$parts += $defaults;
// Convert the query string into a QueryString object
if ($parts['query'] || 0 !== strlen($parts['query'])) {
$parts['query'] = QueryString::fromString($parts['query']);
}
return new static($parts['scheme'], $parts['host'], $parts['user'],
$parts['pass'], $parts['port'], $parts['path'], $parts['query'],
$parts['fragment']);
}
/**
* Build a URL from parse_url parts. The generated URL will be a relative URL if a scheme or host are not provided.
*
* @param array $parts Array of parse_url parts
*
* @return string
*/
public static function buildUrl(array $parts)
{
$url = $scheme = '';
if (isset($parts['scheme'])) {
$scheme = $parts['scheme'];
$url .= $scheme . ':';
}
if (isset($parts['host'])) {
$url .= '//';
if (isset($parts['user'])) {
$url .= $parts['user'];
if (isset($parts['pass'])) {
$url .= ':' . $parts['pass'];
}
$url .= '@';
}
$url .= $parts['host'];
// Only include the port if it is not the default port of the scheme
if (isset($parts['port'])
&& !(($scheme == 'http' && $parts['port'] == 80) || ($scheme == 'https' && $parts['port'] == 443))
) {
$url .= ':' . $parts['port'];
}
}
// Add the path component if present
if (isset($parts['path']) && 0 !== strlen($parts['path'])) {
// Always ensure that the path begins with '/' if set and something is before the path
if ($url && $parts['path'][0] != '/' && substr($url, -1) != '/') {
$url .= '/';
}
$url .= $parts['path'];
}
// Add the query string if present
if (isset($parts['query'])) {
$url .= '?' . $parts['query'];
}
// Ensure that # is only added to the url if fragment contains anything.
if (isset($parts['fragment'])) {
$url .= '#' . $parts['fragment'];
}
return $url;
}
/**
* Create a new URL from URL parts
*
* @param string $scheme Scheme of the URL
* @param string $host Host of the URL
* @param string $username Username of the URL
* @param string $password Password of the URL
* @param int $port Port of the URL
* @param string $path Path of the URL
* @param QueryString|array|string $query Query string of the URL
* @param string $fragment Fragment of the URL
*/
public function __construct($scheme, $host, $username = null, $password = null, $port = null, $path = null, QueryString $query = null, $fragment = null)
{
$this->scheme = $scheme;
$this->host = $host;
$this->port = $port;
$this->username = $username;
$this->password = $password;
$this->fragment = $fragment;
if (!$query) {
$this->query = new QueryString();
} else {
$this->setQuery($query);
}
$this->setPath($path);
}
/**
* Clone the URL
*/
public function __clone()
{
$this->query = clone $this->query;
}
/**
* Returns the URL as a URL string
*
* @return string
*/
public function __toString()
{
return self::buildUrl($this->getParts());
}
/**
* Get the parts of the URL as an array
*
* @return array
*/
public function getParts()
{
$query = (string) $this->query;
return array(
'scheme' => $this->scheme,
'user' => $this->username,
'pass' => $this->password,
'host' => $this->host,
'port' => $this->port,
'path' => $this->getPath(),
'query' => $query !== '' ? $query : null,
'fragment' => $this->fragment,
);
}
/**
* Set the host of the request.
*
* @param string $host Host to set (e.g. www.yahoo.com, yahoo.com)
*
* @return Url
*/
public function setHost($host)
{
if (strpos($host, ':') === false) {
$this->host = $host;
} else {
list($host, $port) = explode(':', $host);
$this->host = $host;
$this->setPort($port);
}
return $this;
}
/**
* Get the host part of the URL
*
* @return string
*/
public function getHost()
{
return $this->host;
}
/**
* Set the scheme part of the URL (http, https, ftp, etc)
*
* @param string $scheme Scheme to set
*
* @return Url
*/
public function setScheme($scheme)
{
if ($this->scheme == 'http' && $this->port == 80) {
$this->port = null;
} elseif ($this->scheme == 'https' && $this->port == 443) {
$this->port = null;
}
$this->scheme = $scheme;
return $this;
}
/**
* Get the scheme part of the URL
*
* @return string
*/
public function getScheme()
{
return $this->scheme;
}
/**
* Set the port part of the URL
*
* @param int $port Port to set
*
* @return Url
*/
public function setPort($port)
{
$this->port = $port;
return $this;
}
/**
* Get the port part of the URl. Will return the default port for a given scheme if no port has been set.
*
* @return int|null
*/
public function getPort()
{
if ($this->port) {
return $this->port;
} elseif ($this->scheme == 'http') {
return 80;
} elseif ($this->scheme == 'https') {
return 443;
}
return null;
}
/**
* Set the path part of the URL
*
* @param array|string $path Path string or array of path segments
*
* @return Url
*/
public function setPath($path)
{
static $pathReplace = array(' ' => '%20', '?' => '%3F');
if (is_array($path)) {
$path = '/' . implode('/', $path);
}
$this->path = strtr($path, $pathReplace);
return $this;
}
/**
* Normalize the URL so that double slashes and relative paths are removed
*
* @return Url
*/
public function normalizePath()
{
if (!$this->path || $this->path == '/' || $this->path == '*') {
return $this;
}
$results = array();
$segments = $this->getPathSegments();
foreach ($segments as $segment) {
if ($segment == '..') {
array_pop($results);
} elseif ($segment != '.' && $segment != '') {
$results[] = $segment;
}
}
// Combine the normalized parts and add the leading slash if needed
$this->path = ($this->path[0] == '/' ? '/' : '') . implode('/', $results);
// Add the trailing slash if necessary
if ($this->path != '/' && end($segments) == '') {
$this->path .= '/';
}
return $this;
}
/**
* Add a relative path to the currently set path.
*
* @param string $relativePath Relative path to add
*
* @return Url
*/
public function addPath($relativePath)
{
if ($relativePath != '/' && is_string($relativePath) && strlen($relativePath) > 0) {
// Add a leading slash if needed
if ($relativePath[0] != '/') {
$relativePath = '/' . $relativePath;
}
$this->setPath(str_replace('//', '/', $this->path . $relativePath));
}
return $this;
}
/**
* Get the path part of the URL
*
* @return string
*/
public function getPath()
{
return $this->path;
}
/**
* Get the path segments of the URL as an array
*
* @return array
*/
public function getPathSegments()
{
return array_slice(explode('/', $this->getPath()), 1);
}
/**
* Set the password part of the URL
*
* @param string $password Password to set
*
* @return Url
*/
public function setPassword($password)
{
$this->password = $password;
return $this;
}
/**
* Get the password part of the URL
*
* @return null|string
*/
public function getPassword()
{
return $this->password;
}
/**
* Set the username part of the URL
*
* @param string $username Username to set
*
* @return Url
*/
public function setUsername($username)
{
$this->username = $username;
return $this;
}
/**
* Get the username part of the URl
*
* @return null|string
*/
public function getUsername()
{
return $this->username;
}
/**
* Get the query part of the URL as a QueryString object
*
* @return QueryString
*/
public function getQuery()
{
return $this->query;
}
/**
* Set the query part of the URL
*
* @param QueryString|string|array $query Query to set
*
* @return Url
*/
public function setQuery($query)
{
if (is_string($query)) {
$output = null;
parse_str($query, $output);
$this->query = new QueryString($output);
} elseif (is_array($query)) {
$this->query = new QueryString($query);
} elseif ($query instanceof QueryString) {
$this->query = $query;
}
return $this;
}
/**
* Get the fragment part of the URL
*
* @return null|string
*/
public function getFragment()
{
return $this->fragment;
}
/**
* Set the fragment part of the URL
*
* @param string $fragment Fragment to set
*
* @return Url
*/
public function setFragment($fragment)
{
$this->fragment = $fragment;
return $this;
}
/**
* Check if this is an absolute URL
*
* @return bool
*/
public function isAbsolute()
{
return $this->scheme && $this->host;
}
/**
* Combine the URL with another URL. Follows the rules specific in RFC 3986 section 5.4.
*
* @param string $url Relative URL to combine with
* @param bool $strictRfc3986 Set to true to use strict RFC 3986 compliance when merging paths. When first
* released, Guzzle used an incorrect algorithm for combining relative URL paths. In
* order to not break users, we introduced this flag to allow the merging of URLs based
* on strict RFC 3986 section 5.4.1. This means that "http://a.com/foo/baz" merged with
* "bar" would become "http://a.com/foo/bar". When this value is set to false, it would
* become "http://a.com/foo/baz/bar".
* @return Url
* @throws InvalidArgumentException
* @link http://tools.ietf.org/html/rfc3986#section-5.4
*/
public function combine($url, $strictRfc3986 = false)
{
$url = self::factory($url);
// Use the more absolute URL as the base URL
if (!$this->isAbsolute() && $url->isAbsolute()) {
$url = $url->combine($this);
}
// Passing a URL with a scheme overrides everything
if ($buffer = $url->getScheme()) {
$this->scheme = $buffer;
$this->host = $url->getHost();
$this->port = $url->getPort();
$this->username = $url->getUsername();
$this->password = $url->getPassword();
$this->path = $url->getPath();
$this->query = $url->getQuery();
$this->fragment = $url->getFragment();
return $this;
}
// Setting a host overrides the entire rest of the URL
if ($buffer = $url->getHost()) {
$this->host = $buffer;
$this->port = $url->getPort();
$this->username = $url->getUsername();
$this->password = $url->getPassword();
$this->path = $url->getPath();
$this->query = $url->getQuery();
$this->fragment = $url->getFragment();
return $this;
}
$path = $url->getPath();
$query = $url->getQuery();
if (!$path) {
if (count($query)) {
$this->addQuery($query, $strictRfc3986);
}
} else {
if ($path[0] == '/') {
$this->path = $path;
} elseif ($strictRfc3986) {
$this->path .= '/../' . $path;
} else {
$this->path .= '/' . $path;
}
$this->normalizePath();
$this->addQuery($query, $strictRfc3986);
}
$this->fragment = $url->getFragment();
return $this;
}
private function addQuery(QueryString $new, $strictRfc386)
{
if (!$strictRfc386) {
$new->merge($this->query);
}
$this->query = $new;
}
}