PackageLocator.php
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<?php
/**
*
* This file is part of the Aura Project for PHP.
*
* @package Aura.Intl
*
* @license http://opensource.org/licenses/MIT MIT
*
*/
namespace Aura\Intl;
/**
*
* A ServiceLocator implementation for loading and retaining translator objects.
*
* @package Aura.Intl
*
*/
class PackageLocator implements PackageLocatorInterface
{
/**
*
* A registry of packages.
*
* Unlike many other registries, this one is two layers deep. The first
* key is a package name, the second key is a locale code, and the value
* is a callable that returns a Package object for that name and locale.
*
* @var array
*
*/
protected $registry = [];
/**
*
* Tracks whether or not a registry entry has been converted from a
* callable to a Package object.
*
* @var array
*
*/
protected $converted = [];
/**
*
* Constructor.
*
* @param array $registry A registry of packages.
*
* @see $registry
*
*/
public function __construct(array $registry = [])
{
foreach ($registry as $name => $locales) {
foreach ($locales as $locale => $spec) {
$this->set($name, $locale, $spec);
}
}
}
/**
*
* Sets a Package object.
*
* @param string $name The package name.
*
* @param string $locale The locale for the package.
*
* @param callable $spec A callable that returns a package.
*
* @return void
*
*/
public function set($name, $locale, callable $spec)
{
$this->registry[$name][$locale] = $spec;
$this->converted[$name][$locale] = false;
}
/**
*
* Gets a Package object.
*
* @param string $name The package name.
*
* @param string $locale The locale for the package.
*
* @return Package
*
*/
public function get($name, $locale)
{
if (! isset($this->registry[$name][$locale])) {
throw new Exception("Package '$name' with locale '$locale' is not registered.");
}
if (! $this->converted[$name][$locale]) {
$func = $this->registry[$name][$locale];
$this->registry[$name][$locale] = $func();
$this->converted[$name][$locale] = true;
}
return $this->registry[$name][$locale];
}
}