/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
PHP | 289 lines | 167 code | 43 blank | 79 comment | 39 complexity | e6bb0c211ebbfc204b5f1525ee46f710 MD5 | raw file
- <?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\Matcher\Dumper;
- use Symfony\Component\Routing\Route;
- use Symfony\Component\Routing\RouteCollection;
- /**
- * PhpMatcherDumper creates a PHP class able to match URLs for a given set of routes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Tobias Schultze <http://tobion.de>
- */
- class PhpMatcherDumper extends MatcherDumper
- {
- /**
- * Dumps a set of routes to a PHP class.
- *
- * Available options:
- *
- * * class: The class name
- * * base_class: The base class name
- *
- * @param array $options An array of options
- *
- * @return string A PHP class representing the matcher class
- */
- public function dump(array $options = array())
- {
- $options = array_merge(array(
- 'class' => 'ProjectUrlMatcher',
- 'base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
- ), $options);
- // trailing slash support is only enabled if we know how to redirect the user
- $interfaces = class_implements($options['base_class']);
- $supportsRedirections = isset($interfaces['Symfony\\Component\\Routing\\Matcher\\RedirectableUrlMatcherInterface']);
- return <<<EOF
- <?php
- use Symfony\Component\Routing\Exception\MethodNotAllowedException;
- use Symfony\Component\Routing\Exception\ResourceNotFoundException;
- use Symfony\Component\Routing\RequestContext;
- /**
- * {$options['class']}
- *
- * This class has been auto-generated
- * by the Symfony Routing Component.
- */
- class {$options['class']} extends {$options['base_class']}
- {
- /**
- * Constructor.
- */
- public function __construct(RequestContext \$context)
- {
- \$this->context = \$context;
- }
- {$this->generateMatchMethod($supportsRedirections)}
- }
- EOF;
- }
- /**
- * Generates the code for the match method implementing UrlMatcherInterface.
- *
- * @param Boolean $supportsRedirections Whether redirections are supported by the base class
- *
- * @return string Match method as PHP code
- */
- private function generateMatchMethod($supportsRedirections)
- {
- $code = rtrim($this->compileRoutes($this->getRoutes(), $supportsRedirections), "\n");
- return <<<EOF
- public function match(\$pathinfo)
- {
- \$allow = array();
- \$pathinfo = rawurldecode(\$pathinfo);
- $code
- throw 0 < count(\$allow) ? new MethodNotAllowedException(array_unique(\$allow)) : new ResourceNotFoundException();
- }
- EOF;
- }
- /**
- * Counts the number of routes as direct child of the RouteCollection.
- *
- * @param RouteCollection $routes A RouteCollection instance
- *
- * @return integer Number of Routes
- */
- private function countDirectChildRoutes(RouteCollection $routes)
- {
- $count = 0;
- foreach ($routes as $route) {
- if ($route instanceof Route) {
- $count++;
- }
- }
- return $count;
- }
- /**
- * Generates PHP code recursively to match a RouteCollection with all child routes and child collections.
- *
- * @param RouteCollection $routes A RouteCollection instance
- * @param Boolean $supportsRedirections Whether redirections are supported by the base class
- * @param string|null $parentPrefix The prefix of the parent collection used to optimize the code
- *
- * @return string PHP code
- */
- private function compileRoutes(RouteCollection $routes, $supportsRedirections, $parentPrefix = null)
- {
- $code = '';
- $prefix = $routes->getPrefix();
- $countDirectChildRoutes = $this->countDirectChildRoutes($routes);
- $countAllChildRoutes = count($routes->all());
- // Can the matching be optimized by wrapping it with the prefix condition
- // - no need to optimize if current prefix is the same as the parent prefix
- // - if $countDirectChildRoutes === 0, the sub-collections can do their own optimizations (in case there are any)
- // - it's not worth wrapping a single child route
- // - prefixes with variables cannot be optimized because routes within the collection might have different requirements for the same variable
- $optimizable = '' !== $prefix && $prefix !== $parentPrefix && $countDirectChildRoutes > 0 && $countAllChildRoutes > 1 && false === strpos($prefix, '{');
- if ($optimizable) {
- $code .= sprintf(" if (0 === strpos(\$pathinfo, %s)) {\n", var_export($prefix, true));
- }
- foreach ($routes as $name => $route) {
- if ($route instanceof Route) {
- // a single route in a sub-collection is not wrapped so it should do its own optimization in ->compileRoute with $parentPrefix = null
- $code .= $this->compileRoute($route, $name, $supportsRedirections, 1 === $countAllChildRoutes ? null : $prefix)."\n";
- } elseif ($countAllChildRoutes - $countDirectChildRoutes > 0) { // we can stop iterating recursively if we already know there are no more routes
- $code .= $this->compileRoutes($route, $supportsRedirections, $prefix);
- }
- }
- if ($optimizable) {
- $code .= " }\n\n";
- // apply extra indention at each line (except empty ones)
- $code = preg_replace('/^.{2,}$/m', ' $0', $code);
- }
- return $code;
- }
- /**
- * Compiles a single Route to PHP code used to match it against the path info.
- *
- * @param Route $routes A Route instance
- * @param string $name The name of the Route
- * @param Boolean $supportsRedirections Whether redirections are supported by the base class
- * @param string|null $parentPrefix The prefix of the parent collection used to optimize the code
- *
- * @return string PHP code
- */
- private function compileRoute(Route $route, $name, $supportsRedirections, $parentPrefix = null)
- {
- $code = '';
- $compiledRoute = $route->compile();
- $conditions = array();
- $hasTrailingSlash = false;
- $matches = false;
- $methods = array();
- if ($req = $route->getRequirement('_method')) {
- $methods = explode('|', strtoupper($req));
- // GET and HEAD are equivalent
- if (in_array('GET', $methods) && !in_array('HEAD', $methods)) {
- $methods[] = 'HEAD';
- }
- }
- $supportsTrailingSlash = $supportsRedirections && (!$methods || in_array('HEAD', $methods));
- if (!count($compiledRoute->getVariables()) && false !== preg_match('#^(.)\^(?<url>.*?)\$\1#', $compiledRoute->getRegex(), $m)) {
- if ($supportsTrailingSlash && substr($m['url'], -1) === '/') {
- $conditions[] = sprintf("rtrim(\$pathinfo, '/') === %s", var_export(rtrim(str_replace('\\', '', $m['url']), '/'), true));
- $hasTrailingSlash = true;
- } else {
- $conditions[] = sprintf("\$pathinfo === %s", var_export(str_replace('\\', '', $m['url']), true));
- }
- } else {
- if ($compiledRoute->getStaticPrefix() && $compiledRoute->getStaticPrefix() !== $parentPrefix) {
- $conditions[] = sprintf("0 === strpos(\$pathinfo, %s)", var_export($compiledRoute->getStaticPrefix(), true));
- }
- $regex = $compiledRoute->getRegex();
- if ($supportsTrailingSlash && $pos = strpos($regex, '/$')) {
- $regex = substr($regex, 0, $pos).'/?$'.substr($regex, $pos + 2);
- $hasTrailingSlash = true;
- }
- $conditions[] = sprintf("preg_match(%s, \$pathinfo, \$matches)", var_export($regex, true));
- $matches = true;
- }
- $conditions = implode(' && ', $conditions);
- $code .= <<<EOF
- // $name
- if ($conditions) {
- EOF;
- if ($methods) {
- $gotoname = 'not_'.preg_replace('/[^A-Za-z0-9_]/', '', $name);
- if (1 === count($methods)) {
- $code .= <<<EOF
- if (\$this->context->getMethod() != '$methods[0]') {
- \$allow[] = '$methods[0]';
- goto $gotoname;
- }
- EOF;
- } else {
- $methods = implode("', '", $methods);
- $code .= <<<EOF
- if (!in_array(\$this->context->getMethod(), array('$methods'))) {
- \$allow = array_merge(\$allow, array('$methods'));
- goto $gotoname;
- }
- EOF;
- }
- }
- if ($hasTrailingSlash) {
- $code .= <<<EOF
- if (substr(\$pathinfo, -1) !== '/') {
- return \$this->redirect(\$pathinfo.'/', '$name');
- }
- EOF;
- }
- if ($scheme = $route->getRequirement('_scheme')) {
- if (!$supportsRedirections) {
- throw new \LogicException('The "_scheme" requirement is only supported for URL matchers that implement RedirectableUrlMatcherInterface.');
- }
- $code .= <<<EOF
- if (\$this->context->getScheme() !== '$scheme') {
- return \$this->redirect(\$pathinfo, '$name', '$scheme');
- }
- EOF;
- }
- // optimize parameters array
- if (true === $matches && $compiledRoute->getDefaults()) {
- $code .= sprintf(" return array_merge(\$this->mergeDefaults(\$matches, %s), array('_route' => '%s'));\n"
- , str_replace("\n", '', var_export($compiledRoute->getDefaults(), true)), $name);
- } elseif (true === $matches) {
- $code .= sprintf(" \$matches['_route'] = '%s';\n", $name);
- $code .= " return \$matches;\n";
- } elseif ($compiledRoute->getDefaults()) {
- $code .= sprintf(" return %s;\n", str_replace("\n", '', var_export(array_merge($compiledRoute->getDefaults(), array('_route' => $name)), true)));
- } else {
- $code .= sprintf(" return array('_route' => '%s');\n", $name);
- }
- $code .= " }\n";
- if ($methods) {
- $code .= " $gotoname:\n";
- }
- return $code;
- }
- }