UserAgent.php
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<?php
namespace AlibabaCloud\Client\Request;
use AlibabaCloud\Client\AlibabaCloud;
use AlibabaCloud\Client\Filter\Filter;
use AlibabaCloud\Client\Support\Arrays;
use AlibabaCloud\Client\Exception\ClientException;
/**
* Class UserAgent
*
* @package AlibabaCloud\Client\Request
*/
class UserAgent
{
/**
* @var array
*/
private static $userAgent = [];
/**
* @var array
*/
private static $guard = [
'client',
'php',
];
/**
* @param array $append
*
* @return string
*/
public static function toString(array $append = [])
{
self::defaultFields();
$os = \PHP_OS;
$osVersion = php_uname('r');
$osMode = php_uname('m');
$userAgent = "AlibabaCloud ($os $osVersion; $osMode) ";
$newUserAgent = [];
$append = self::clean($append);
$append = Arrays::merge(
[
self::$userAgent,
$append,
]
);
foreach ($append as $key => $value) {
if ($value === null) {
$newUserAgent[] = $key;
continue;
}
$newUserAgent[] = "$key/$value";
}
return $userAgent . \implode(' ', $newUserAgent);
}
/**
* UserAgent constructor.
*/
private static function defaultFields()
{
if (self::$userAgent === []) {
self::$userAgent = [
'Client' => AlibabaCloud::VERSION,
'PHP' => \PHP_VERSION,
];
}
}
/**
* @param array $append
*
* @return array
*/
public static function clean(array $append)
{
foreach ($append as $key => $value) {
if (self::isGuarded($key)) {
unset($append[$key]);
continue;
}
}
return $append;
}
/**
* @param $name
*
* @return bool
*/
public static function isGuarded($name)
{
return in_array(strtolower($name), self::$guard, true);
}
/**
* set User Agent of Alibaba Cloud.
*
* @param string $name
* @param string $value
*
* @throws ClientException
*/
public static function append($name, $value)
{
Filter::name($name);
Filter::value($value);
self::defaultFields();
if (!self::isGuarded($name)) {
self::$userAgent[$name] = $value;
}
}
/**
* @param array $userAgent
*/
public static function with(array $userAgent)
{
self::$userAgent = self::clean($userAgent);
}
/**
* Clear all of the User Agent.
*/
public static function clear()
{
self::$userAgent = [];
}
}