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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Routing;
use Symfony\Component\Config\Loader\LoaderInterface;
use Symfony\Component\Config\ConfigCacheInterface;
use Symfony\Component\Config\ConfigCacheFactoryInterface;
use Symfony\Component\Config\ConfigCacheFactory;
use Psr\Log\LoggerInterface;
use Symfony\Component\Routing\Generator\ConfigurableRequirementsInterface;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Routing\Generator\Dumper\GeneratorDumperInterface;
use Symfony\Component\Routing\Matcher\RequestMatcherInterface;
use Symfony\Component\Routing\Matcher\UrlMatcherInterface;
use Symfony\Component\Routing\Matcher\Dumper\MatcherDumperInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
/**
* The Router class is an example of the integration of all pieces of the
* routing system for easier use.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Router implements RouterInterface, RequestMatcherInterface
{
/**
* @var UrlMatcherInterface|null
*/
protected $matcher;
/**
* @var UrlGeneratorInterface|null
*/
protected $generator;
/**
* @var RequestContext
*/
protected $context;
/**
* @var LoaderInterface
*/
protected $loader;
/**
* @var RouteCollection|null
*/
protected $collection;
/**
* @var mixed
*/
protected $resource;
/**
* @var array
*/
protected $options = array();
/**
* @var LoggerInterface|null
*/
protected $logger;
/**
* @var ConfigCacheFactoryInterface|null
*/
private $configCacheFactory;
/**
* @var ExpressionFunctionProviderInterface[]
*/
private $expressionLanguageProviders = array();
/**
* Constructor.
*
* @param LoaderInterface $loader A LoaderInterface instance
* @param mixed $resource The main resource to load
* @param array $options An array of options
* @param RequestContext $context The context
* @param LoggerInterface $logger A logger instance
*/
public function __construct(LoaderInterface $loader, $resource, array $options = array(), RequestContext $context = null, LoggerInterface $logger = null)
{
$this->loader = $loader;
$this->resource = $resource;
$this->logger = $logger;
$this->context = $context ?: new RequestContext();
$this->setOptions($options);
}
/**
* Sets options.
*
* Available options:
*
* * cache_dir: The cache directory (or null to disable caching)
* * debug: Whether to enable debugging or not (false by default)
* * generator_class: The name of a UrlGeneratorInterface implementation
* * generator_base_class: The base class for the dumped generator class
* * generator_cache_class: The class name for the dumped generator class
* * generator_dumper_class: The name of a GeneratorDumperInterface implementation
* * matcher_class: The name of a UrlMatcherInterface implementation
* * matcher_base_class: The base class for the dumped matcher class
* * matcher_dumper_class: The class name for the dumped matcher class
* * matcher_cache_class: The name of a MatcherDumperInterface implementation
* * resource_type: Type hint for the main resource (optional)
* * strict_requirements: Configure strict requirement checking for generators
* implementing ConfigurableRequirementsInterface (default is true)
*
* @param array $options An array of options
*
* @throws \InvalidArgumentException When unsupported option is provided
*/
public function setOptions(array $options)
{
$this->options = array(
'cache_dir' => null,
'debug' => false,
'generator_class' => 'Symfony\\Component\\Routing\\Generator\\UrlGenerator',
'generator_base_class' => 'Symfony\\Component\\Routing\\Generator\\UrlGenerator',
'generator_dumper_class' => 'Symfony\\Component\\Routing\\Generator\\Dumper\\PhpGeneratorDumper',
'generator_cache_class' => 'ProjectUrlGenerator',
'matcher_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
'matcher_base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
'matcher_dumper_class' => 'Symfony\\Component\\Routing\\Matcher\\Dumper\\PhpMatcherDumper',
'matcher_cache_class' => 'ProjectUrlMatcher',
'resource_type' => null,
'strict_requirements' => true,
);
// check option names and live merge, if errors are encountered Exception will be thrown
$invalid = array();
foreach ($options as $key => $value) {
if (array_key_exists($key, $this->options)) {
$this->options[$key] = $value;
} else {
$invalid[] = $key;
}
}
if ($invalid) {
throw new \InvalidArgumentException(sprintf('The Router does not support the following options: "%s".', implode('", "', $invalid)));
}
}
/**
* Sets an option.
*
* @param string $key The key
* @param mixed $value The value
*
* @throws \InvalidArgumentException
*/
public function setOption($key, $value)
{
if (!array_key_exists($key, $this->options)) {
throw new \InvalidArgumentException(sprintf('The Router does not support the "%s" option.', $key));
}
$this->options[$key] = $value;
}
/**
* Gets an option value.
*
* @param string $key The key
*
* @return mixed The value
*
* @throws \InvalidArgumentException
*/
public function getOption($key)
{
if (!array_key_exists($key, $this->options)) {
throw new \InvalidArgumentException(sprintf('The Router does not support the "%s" option.', $key));
}
return $this->options[$key];
}
/**
* {@inheritdoc}
*/
public function getRouteCollection()
{
if (null === $this->collection) {
$this->collection = $this->loader->load($this->resource, $this->options['resource_type']);
}
return $this->collection;
}
/**
* {@inheritdoc}
*/
public function setContext(RequestContext $context)
{
$this->context = $context;
if (null !== $this->matcher) {
$this->getMatcher()->setContext($context);
}
if (null !== $this->generator) {
$this->getGenerator()->setContext($context);
}
}
/**
* {@inheritdoc}
*/
public function getContext()
{
return $this->context;
}
/**
* Sets the ConfigCache factory to use.
*
* @param ConfigCacheFactoryInterface $configCacheFactory The factory to use
*/
public function setConfigCacheFactory(ConfigCacheFactoryInterface $configCacheFactory)
{
$this->configCacheFactory = $configCacheFactory;
}
/**
* {@inheritdoc}
*/
public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH)
{
return $this->getGenerator()->generate($name, $parameters, $referenceType);
}
/**
* {@inheritdoc}
*/
public function match($pathinfo)
{
return $this->getMatcher()->match($pathinfo);
}
/**
* {@inheritdoc}
*/
public function matchRequest(Request $request)
{
$matcher = $this->getMatcher();
if (!$matcher instanceof RequestMatcherInterface) {
// fallback to the default UrlMatcherInterface
return $matcher->match($request->getPathInfo());
}
return $matcher->matchRequest($request);
}
/**
* Gets the UrlMatcher instance associated with this Router.
*
* @return UrlMatcherInterface A UrlMatcherInterface instance
*/
public function getMatcher()
{
if (null !== $this->matcher) {
return $this->matcher;
}
if (null === $this->options['cache_dir'] || null === $this->options['matcher_cache_class']) {
$this->matcher = new $this->options['matcher_class']($this->getRouteCollection(), $this->context);
if (method_exists($this->matcher, 'addExpressionLanguageProvider')) {
foreach ($this->expressionLanguageProviders as $provider) {
$this->matcher->addExpressionLanguageProvider($provider);
}
}
return $this->matcher;
}
$cache = $this->getConfigCacheFactory()->cache($this->options['cache_dir'].'/'.$this->options['matcher_cache_class'].'.php',
function (ConfigCacheInterface $cache) {
$dumper = $this->getMatcherDumperInstance();
if (method_exists($dumper, 'addExpressionLanguageProvider')) {
foreach ($this->expressionLanguageProviders as $provider) {
$dumper->addExpressionLanguageProvider($provider);
}
}
$options = array(
'class' => $this->options['matcher_cache_class'],
'base_class' => $this->options['matcher_base_class'],
);
$cache->write($dumper->dump($options), $this->getRouteCollection()->getResources());
}
);
require_once $cache->getPath();
return $this->matcher = new $this->options['matcher_cache_class']($this->context);
}
/**
* Gets the UrlGenerator instance associated with this Router.
*
* @return UrlGeneratorInterface A UrlGeneratorInterface instance
*/
public function getGenerator()
{
if (null !== $this->generator) {
return $this->generator;
}
if (null === $this->options['cache_dir'] || null === $this->options['generator_cache_class']) {
$this->generator = new $this->options['generator_class']($this->getRouteCollection(), $this->context, $this->logger);
} else {
$cache = $this->getConfigCacheFactory()->cache($this->options['cache_dir'].'/'.$this->options['generator_cache_class'].'.php',
function (ConfigCacheInterface $cache) {
$dumper = $this->getGeneratorDumperInstance();
$options = array(
'class' => $this->options['generator_cache_class'],
'base_class' => $this->options['generator_base_class'],
);
$cache->write($dumper->dump($options), $this->getRouteCollection()->getResources());
}
);
require_once $cache->getPath();
$this->generator = new $this->options['generator_cache_class']($this->context, $this->logger);
}
if ($this->generator instanceof ConfigurableRequirementsInterface) {
$this->generator->setStrictRequirements($this->options['strict_requirements']);
}
return $this->generator;
}
public function addExpressionLanguageProvider(ExpressionFunctionProviderInterface $provider)
{
$this->expressionLanguageProviders[] = $provider;
}
/**
* @return GeneratorDumperInterface
*/
protected function getGeneratorDumperInstance()
{
return new $this->options['generator_dumper_class']($this->getRouteCollection());
}
/**
* @return MatcherDumperInterface
*/
protected function getMatcherDumperInstance()
{
return new $this->options['matcher_dumper_class']($this->getRouteCollection());
}
/**
* Provides the ConfigCache factory implementation, falling back to a
* default implementation if necessary.
*
* @return ConfigCacheFactoryInterface $configCacheFactory
*/
private function getConfigCacheFactory()
{
if (null === $this->configCacheFactory) {
$this->configCacheFactory = new ConfigCacheFactory($this->options['debug']);
}
return $this->configCacheFactory;
}
}