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294 lines
9.5 KiB
PHP
294 lines
9.5 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Routing\Matcher\Dumper;
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use Symfony\Component\Routing\Route;
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use Symfony\Component\Routing\RouteCollection;
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/**
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* PhpMatcherDumper creates a PHP class able to match URLs for a given set of routes.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class PhpMatcherDumper extends MatcherDumper
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{
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/**
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* Dumps a set of routes to a PHP class.
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*
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* Available options:
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*
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* * class: The class name
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* * base_class: The base class name
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*
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* @param array $options An array of options
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*
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* @return string A PHP class representing the matcher class
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*/
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public function dump(array $options = array())
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{
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$options = array_merge(array(
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'class' => 'ProjectUrlMatcher',
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'base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
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), $options);
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// trailing slash support is only enabled if we know how to redirect the user
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$interfaces = class_implements($options['base_class']);
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$supportsRedirections = isset($interfaces['Symfony\Component\Routing\Matcher\RedirectableUrlMatcherInterface']);
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return
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$this->startClass($options['class'], $options['base_class']).
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$this->addConstructor().
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$this->addMatcher($supportsRedirections).
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$this->endClass()
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;
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}
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private function addMatcher($supportsRedirections)
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{
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// we need to deep clone the routes as we will modify the structure to optimize the dump
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$code = implode("\n", $this->compileRoutes(clone $this->getRoutes(), $supportsRedirections));
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return <<<EOF
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public function match(\$pathinfo)
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{
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\$allow = array();
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\$pathinfo = urldecode(\$pathinfo);
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$code
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throw 0 < count(\$allow) ? new MethodNotAllowedException(array_unique(\$allow)) : new ResourceNotFoundException();
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}
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EOF;
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}
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private function compileRoutes(RouteCollection $routes, $supportsRedirections, $parentPrefix = null)
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{
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$code = array();
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$routeIterator = $routes->getIterator();
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$keys = array_keys($routeIterator->getArrayCopy());
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$keysCount = count($keys);
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$i = 0;
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foreach ($routeIterator as $name => $route) {
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$i++;
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if ($route instanceof RouteCollection) {
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$prefix = $route->getPrefix();
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$optimizable = $prefix && count($route->all()) > 1 && false === strpos($route->getPrefix(), '{');
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$indent = '';
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if ($optimizable) {
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for ($j = $i; $j < $keysCount; $j++) {
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if ($keys[$j] === null) {
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continue;
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}
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$testRoute = $routeIterator->offsetGet($keys[$j]);
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$isCollection = ($testRoute instanceof RouteCollection);
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$testPrefix = $isCollection ? $testRoute->getPrefix() : $testRoute->getPattern();
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if (0 === strpos($testPrefix, $prefix)) {
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$routeIterator->offsetUnset($keys[$j]);
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if ($isCollection) {
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$route->addCollection($testRoute);
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} else {
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$route->add($keys[$j], $testRoute);
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}
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$i++;
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$keys[$j] = null;
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}
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}
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if ($prefix !== $parentPrefix) {
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$code[] = sprintf(" if (0 === strpos(\$pathinfo, %s)) {", var_export($prefix, true));
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$indent = ' ';
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}
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}
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foreach ($this->compileRoutes($route, $supportsRedirections, $prefix) as $line) {
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foreach (explode("\n", $line) as $l) {
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if ($l) {
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$code[] = $indent.$l;
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} else {
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$code[] = $l;
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}
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}
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}
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if ($optimizable && $prefix !== $parentPrefix) {
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$code[] = " }\n";
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}
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} else {
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foreach ($this->compileRoute($route, $name, $supportsRedirections, $parentPrefix) as $line) {
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$code[] = $line;
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}
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}
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}
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return $code;
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}
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private function compileRoute(Route $route, $name, $supportsRedirections, $parentPrefix = null)
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{
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$code = array();
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$compiledRoute = $route->compile();
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$conditions = array();
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$hasTrailingSlash = false;
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$matches = false;
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if (!count($compiledRoute->getVariables()) && false !== preg_match('#^(.)\^(?P<url>.*?)\$\1#', $compiledRoute->getRegex(), $m)) {
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if ($supportsRedirections && substr($m['url'], -1) === '/') {
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$conditions[] = sprintf("rtrim(\$pathinfo, '/') === %s", var_export(rtrim(str_replace('\\', '', $m['url']), '/'), true));
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$hasTrailingSlash = true;
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} else {
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$conditions[] = sprintf("\$pathinfo === %s", var_export(str_replace('\\', '', $m['url']), true));
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}
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} else {
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if ($compiledRoute->getStaticPrefix() && $compiledRoute->getStaticPrefix() != $parentPrefix) {
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$conditions[] = sprintf("0 === strpos(\$pathinfo, %s)", var_export($compiledRoute->getStaticPrefix(), true));
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}
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$regex = $compiledRoute->getRegex();
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if ($supportsRedirections && $pos = strpos($regex, '/$')) {
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$regex = substr($regex, 0, $pos).'/?$'.substr($regex, $pos + 2);
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$hasTrailingSlash = true;
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}
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$conditions[] = sprintf("preg_match(%s, \$pathinfo, \$matches)", var_export($regex, true));
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$matches = true;
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}
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$conditions = implode(' && ', $conditions);
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$gotoname = 'not_'.preg_replace('/[^A-Za-z0-9_]/', '', $name);
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$code[] = <<<EOF
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// $name
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if ($conditions) {
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EOF;
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if ($req = $route->getRequirement('_method')) {
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$methods = explode('|', strtoupper($req));
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// GET and HEAD are equivalent
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if (in_array('GET', $methods) && !in_array('HEAD', $methods)) {
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$methods[] = 'HEAD';
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}
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if (1 === count($methods)) {
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$code[] = <<<EOF
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if (\$this->context->getMethod() != '$methods[0]') {
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\$allow[] = '$methods[0]';
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goto $gotoname;
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}
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EOF;
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} else {
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$methods = implode('\', \'', $methods);
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$code[] = <<<EOF
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if (!in_array(\$this->context->getMethod(), array('$methods'))) {
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\$allow = array_merge(\$allow, array('$methods'));
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goto $gotoname;
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}
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EOF;
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}
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}
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if ($hasTrailingSlash) {
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$code[] = sprintf(<<<EOF
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if (substr(\$pathinfo, -1) !== '/') {
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return \$this->redirect(\$pathinfo.'/', '%s');
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}
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EOF
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, $name);
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}
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if ($scheme = $route->getRequirement('_scheme')) {
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if (!$supportsRedirections) {
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throw new \LogicException('The "_scheme" requirement is only supported for route dumper that implements RedirectableUrlMatcherInterface.');
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}
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$code[] = sprintf(<<<EOF
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if (\$this->context->getScheme() !== '$scheme') {
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return \$this->redirect(\$pathinfo, '%s', '$scheme');
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}
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EOF
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, $name);
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}
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// optimize parameters array
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if (true === $matches && $compiledRoute->getDefaults()) {
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$code[] = sprintf(" return array_merge(\$this->mergeDefaults(\$matches, %s), array('_route' => '%s'));"
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, str_replace("\n", '', var_export($compiledRoute->getDefaults(), true)), $name);
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} elseif (true === $matches) {
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$code[] = sprintf(" \$matches['_route'] = '%s';", $name);
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$code[] = sprintf(" return \$matches;", $name);
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} elseif ($compiledRoute->getDefaults()) {
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$code[] = sprintf(' return %s;', str_replace("\n", '', var_export(array_merge($compiledRoute->getDefaults(), array('_route' => $name)), true)));
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} else {
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$code[] = sprintf(" return array('_route' => '%s');", $name);
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}
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$code[] = " }";
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if ($req) {
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$code[] = " $gotoname:";
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}
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$code[] = '';
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return $code;
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}
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private function startClass($class, $baseClass)
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{
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return <<<EOF
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<?php
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use Symfony\Component\Routing\Exception\MethodNotAllowedException;
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use Symfony\Component\Routing\Exception\ResourceNotFoundException;
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use Symfony\Component\Routing\RequestContext;
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/**
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* $class
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*
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* This class has been auto-generated
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* by the Symfony Routing Component.
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*/
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class $class extends $baseClass
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{
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EOF;
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}
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private function addConstructor()
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{
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return <<<EOF
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/**
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* Constructor.
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*/
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public function __construct(RequestContext \$context)
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{
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\$this->context = \$context;
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}
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EOF;
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}
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private function endClass()
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{
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return <<<EOF
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}
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EOF;
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}
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}
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