502 lines
19 KiB
PHP
502 lines
19 KiB
PHP
<?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\ExpressionLanguage\ExpressionFunctionProviderInterface;
|
|
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
|
|
use Symfony\Component\Routing\Route;
|
|
use Symfony\Component\Routing\RouteCollection;
|
|
|
|
/**
|
|
* CompiledUrlMatcherDumper creates PHP arrays to be used with CompiledUrlMatcher.
|
|
*
|
|
* @author Fabien Potencier <fabien@symfony.com>
|
|
* @author Tobias Schultze <http://tobion.de>
|
|
* @author Arnaud Le Blanc <arnaud.lb@gmail.com>
|
|
* @author Nicolas Grekas <p@tchwork.com>
|
|
*/
|
|
class CompiledUrlMatcherDumper extends MatcherDumper
|
|
{
|
|
private $expressionLanguage;
|
|
private $signalingException;
|
|
|
|
/**
|
|
* @var ExpressionFunctionProviderInterface[]
|
|
*/
|
|
private $expressionLanguageProviders = [];
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function dump(array $options = [])
|
|
{
|
|
return <<<EOF
|
|
<?php
|
|
|
|
/**
|
|
* This file has been auto-generated
|
|
* by the Symfony Routing Component.
|
|
*/
|
|
|
|
return [
|
|
{$this->generateCompiledRoutes()}];
|
|
|
|
EOF;
|
|
}
|
|
|
|
public function addExpressionLanguageProvider(ExpressionFunctionProviderInterface $provider)
|
|
{
|
|
$this->expressionLanguageProviders[] = $provider;
|
|
}
|
|
|
|
/**
|
|
* Generates the arrays for CompiledUrlMatcher's constructor.
|
|
*/
|
|
public function getCompiledRoutes(bool $forDump = false): array
|
|
{
|
|
// Group hosts by same-suffix, re-order when possible
|
|
$matchHost = false;
|
|
$routes = new StaticPrefixCollection();
|
|
foreach ($this->getRoutes()->all() as $name => $route) {
|
|
if ($host = $route->getHost()) {
|
|
$matchHost = true;
|
|
$host = '/'.strtr(strrev($host), '}.{', '(/)');
|
|
}
|
|
|
|
$routes->addRoute($host ?: '/(.*)', [$name, $route]);
|
|
}
|
|
|
|
if ($matchHost) {
|
|
$compiledRoutes = [true];
|
|
$routes = $routes->populateCollection(new RouteCollection());
|
|
} else {
|
|
$compiledRoutes = [false];
|
|
$routes = $this->getRoutes();
|
|
}
|
|
|
|
list($staticRoutes, $dynamicRoutes) = $this->groupStaticRoutes($routes);
|
|
|
|
$conditions = [null];
|
|
$compiledRoutes[] = $this->compileStaticRoutes($staticRoutes, $conditions);
|
|
$chunkLimit = \count($dynamicRoutes);
|
|
|
|
while (true) {
|
|
try {
|
|
$this->signalingException = new \RuntimeException('Compilation failed: regular expression is too large');
|
|
$compiledRoutes = array_merge($compiledRoutes, $this->compileDynamicRoutes($dynamicRoutes, $matchHost, $chunkLimit, $conditions));
|
|
|
|
break;
|
|
} catch (\Exception $e) {
|
|
if (1 < $chunkLimit && $this->signalingException === $e) {
|
|
$chunkLimit = 1 + ($chunkLimit >> 1);
|
|
continue;
|
|
}
|
|
throw $e;
|
|
}
|
|
}
|
|
|
|
if ($forDump) {
|
|
$compiledRoutes[2] = $compiledRoutes[4];
|
|
}
|
|
unset($conditions[0]);
|
|
|
|
if ($conditions) {
|
|
foreach ($conditions as $expression => $condition) {
|
|
$conditions[$expression] = "case {$condition}: return {$expression};";
|
|
}
|
|
|
|
$checkConditionCode = <<<EOF
|
|
static function (\$condition, \$context, \$request) { // \$checkCondition
|
|
switch (\$condition) {
|
|
{$this->indent(implode("\n", $conditions), 3)}
|
|
}
|
|
}
|
|
EOF;
|
|
$compiledRoutes[4] = $forDump ? $checkConditionCode.",\n" : eval('return '.$checkConditionCode.';');
|
|
} else {
|
|
$compiledRoutes[4] = $forDump ? " null, // \$checkCondition\n" : null;
|
|
}
|
|
|
|
return $compiledRoutes;
|
|
}
|
|
|
|
private function generateCompiledRoutes(): string
|
|
{
|
|
list($matchHost, $staticRoutes, $regexpCode, $dynamicRoutes, $checkConditionCode) = $this->getCompiledRoutes(true);
|
|
|
|
$code = self::export($matchHost).', // $matchHost'."\n";
|
|
|
|
$code .= '[ // $staticRoutes'."\n";
|
|
foreach ($staticRoutes as $path => $routes) {
|
|
$code .= sprintf(" %s => [\n", self::export($path));
|
|
foreach ($routes as $route) {
|
|
$code .= sprintf(" [%s, %s, %s, %s, %s, %s, %s],\n", ...array_map([__CLASS__, 'export'], $route));
|
|
}
|
|
$code .= " ],\n";
|
|
}
|
|
$code .= "],\n";
|
|
|
|
$code .= sprintf("[ // \$regexpList%s\n],\n", $regexpCode);
|
|
|
|
$code .= '[ // $dynamicRoutes'."\n";
|
|
foreach ($dynamicRoutes as $path => $routes) {
|
|
$code .= sprintf(" %s => [\n", self::export($path));
|
|
foreach ($routes as $route) {
|
|
$code .= sprintf(" [%s, %s, %s, %s, %s, %s, %s],\n", ...array_map([__CLASS__, 'export'], $route));
|
|
}
|
|
$code .= " ],\n";
|
|
}
|
|
$code .= "],\n";
|
|
$code = preg_replace('/ => \[\n (\[.+?),\n \],/', ' => [$1],', $code);
|
|
|
|
return $this->indent($code, 1).$checkConditionCode;
|
|
}
|
|
|
|
/**
|
|
* Splits static routes from dynamic routes, so that they can be matched first, using a simple switch.
|
|
*/
|
|
private function groupStaticRoutes(RouteCollection $collection): array
|
|
{
|
|
$staticRoutes = $dynamicRegex = [];
|
|
$dynamicRoutes = new RouteCollection();
|
|
|
|
foreach ($collection->all() as $name => $route) {
|
|
$compiledRoute = $route->compile();
|
|
$staticPrefix = rtrim($compiledRoute->getStaticPrefix(), '/');
|
|
$hostRegex = $compiledRoute->getHostRegex();
|
|
$regex = $compiledRoute->getRegex();
|
|
if ($hasTrailingSlash = '/' !== $route->getPath()) {
|
|
$pos = strrpos($regex, '$');
|
|
$hasTrailingSlash = '/' === $regex[$pos - 1];
|
|
$regex = substr_replace($regex, '/?$', $pos - $hasTrailingSlash, 1 + $hasTrailingSlash);
|
|
}
|
|
|
|
if (!$compiledRoute->getPathVariables()) {
|
|
$host = !$compiledRoute->getHostVariables() ? $route->getHost() : '';
|
|
$url = $route->getPath();
|
|
if ($hasTrailingSlash) {
|
|
$url = substr($url, 0, -1);
|
|
}
|
|
foreach ($dynamicRegex as list($hostRx, $rx, $prefix)) {
|
|
if (('' === $prefix || 0 === strpos($url, $prefix)) && (preg_match($rx, $url) || preg_match($rx, $url.'/')) && (!$host || !$hostRx || preg_match($hostRx, $host))) {
|
|
$dynamicRegex[] = [$hostRegex, $regex, $staticPrefix];
|
|
$dynamicRoutes->add($name, $route);
|
|
continue 2;
|
|
}
|
|
}
|
|
|
|
$staticRoutes[$url][$name] = [$route, $hasTrailingSlash];
|
|
} else {
|
|
$dynamicRegex[] = [$hostRegex, $regex, $staticPrefix];
|
|
$dynamicRoutes->add($name, $route);
|
|
}
|
|
}
|
|
|
|
return [$staticRoutes, $dynamicRoutes];
|
|
}
|
|
|
|
/**
|
|
* Compiles static routes in a switch statement.
|
|
*
|
|
* Condition-less paths are put in a static array in the switch's default, with generic matching logic.
|
|
* Paths that can match two or more routes, or have user-specified conditions are put in separate switch's cases.
|
|
*
|
|
* @throws \LogicException
|
|
*/
|
|
private function compileStaticRoutes(array $staticRoutes, array &$conditions): array
|
|
{
|
|
if (!$staticRoutes) {
|
|
return [];
|
|
}
|
|
$compiledRoutes = [];
|
|
|
|
foreach ($staticRoutes as $url => $routes) {
|
|
$compiledRoutes[$url] = [];
|
|
foreach ($routes as $name => list($route, $hasTrailingSlash)) {
|
|
$compiledRoutes[$url][] = $this->compileRoute($route, $name, (!$route->compile()->getHostVariables() ? $route->getHost() : $route->compile()->getHostRegex()) ?: null, $hasTrailingSlash, false, $conditions);
|
|
}
|
|
}
|
|
|
|
return $compiledRoutes;
|
|
}
|
|
|
|
/**
|
|
* Compiles a regular expression followed by a switch statement to match dynamic routes.
|
|
*
|
|
* The regular expression matches both the host and the pathinfo at the same time. For stellar performance,
|
|
* it is built as a tree of patterns, with re-ordering logic to group same-prefix routes together when possible.
|
|
*
|
|
* Patterns are named so that we know which one matched (https://pcre.org/current/doc/html/pcre2syntax.html#SEC23).
|
|
* This name is used to "switch" to the additional logic required to match the final route.
|
|
*
|
|
* Condition-less paths are put in a static array in the switch's default, with generic matching logic.
|
|
* Paths that can match two or more routes, or have user-specified conditions are put in separate switch's cases.
|
|
*
|
|
* Last but not least:
|
|
* - Because it is not possibe to mix unicode/non-unicode patterns in a single regexp, several of them can be generated.
|
|
* - The same regexp can be used several times when the logic in the switch rejects the match. When this happens, the
|
|
* matching-but-failing subpattern is blacklisted by replacing its name by "(*F)", which forces a failure-to-match.
|
|
* To ease this backlisting operation, the name of subpatterns is also the string offset where the replacement should occur.
|
|
*/
|
|
private function compileDynamicRoutes(RouteCollection $collection, bool $matchHost, int $chunkLimit, array &$conditions): array
|
|
{
|
|
if (!$collection->all()) {
|
|
return [[], [], ''];
|
|
}
|
|
$regexpList = [];
|
|
$code = '';
|
|
$state = (object) [
|
|
'regexMark' => 0,
|
|
'regex' => [],
|
|
'routes' => [],
|
|
'mark' => 0,
|
|
'markTail' => 0,
|
|
'hostVars' => [],
|
|
'vars' => [],
|
|
];
|
|
$state->getVars = static function ($m) use ($state) {
|
|
if ('_route' === $m[1]) {
|
|
return '?:';
|
|
}
|
|
|
|
$state->vars[] = $m[1];
|
|
|
|
return '';
|
|
};
|
|
|
|
$chunkSize = 0;
|
|
$prev = null;
|
|
$perModifiers = [];
|
|
foreach ($collection->all() as $name => $route) {
|
|
preg_match('#[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
|
|
if ($chunkLimit < ++$chunkSize || $prev !== $rx[0] && $route->compile()->getPathVariables()) {
|
|
$chunkSize = 1;
|
|
$routes = new RouteCollection();
|
|
$perModifiers[] = [$rx[0], $routes];
|
|
$prev = $rx[0];
|
|
}
|
|
$routes->add($name, $route);
|
|
}
|
|
|
|
foreach ($perModifiers as list($modifiers, $routes)) {
|
|
$prev = false;
|
|
$perHost = [];
|
|
foreach ($routes->all() as $name => $route) {
|
|
$regex = $route->compile()->getHostRegex();
|
|
if ($prev !== $regex) {
|
|
$routes = new RouteCollection();
|
|
$perHost[] = [$regex, $routes];
|
|
$prev = $regex;
|
|
}
|
|
$routes->add($name, $route);
|
|
}
|
|
$prev = false;
|
|
$rx = '{^(?';
|
|
$code .= "\n {$state->mark} => ".self::export($rx);
|
|
$startingMark = $state->mark;
|
|
$state->mark += \strlen($rx);
|
|
$state->regex = $rx;
|
|
|
|
foreach ($perHost as list($hostRegex, $routes)) {
|
|
if ($matchHost) {
|
|
if ($hostRegex) {
|
|
preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $hostRegex, $rx);
|
|
$state->vars = [];
|
|
$hostRegex = '(?i:'.preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]).')\.';
|
|
$state->hostVars = $state->vars;
|
|
} else {
|
|
$hostRegex = '(?:(?:[^./]*+\.)++)';
|
|
$state->hostVars = [];
|
|
}
|
|
$state->mark += \strlen($rx = ($prev ? ')' : '')."|{$hostRegex}(?");
|
|
$code .= "\n .".self::export($rx);
|
|
$state->regex .= $rx;
|
|
$prev = true;
|
|
}
|
|
|
|
$tree = new StaticPrefixCollection();
|
|
foreach ($routes->all() as $name => $route) {
|
|
preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
|
|
|
|
$state->vars = [];
|
|
$regex = preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]);
|
|
if ($hasTrailingSlash = '/' !== $regex && '/' === $regex[-1]) {
|
|
$regex = substr($regex, 0, -1);
|
|
}
|
|
$hasTrailingVar = (bool) preg_match('#\{\w+\}/?$#', $route->getPath());
|
|
|
|
$tree->addRoute($regex, [$name, $regex, $state->vars, $route, $hasTrailingSlash, $hasTrailingVar]);
|
|
}
|
|
|
|
$code .= $this->compileStaticPrefixCollection($tree, $state, 0, $conditions);
|
|
}
|
|
if ($matchHost) {
|
|
$code .= "\n .')'";
|
|
$state->regex .= ')';
|
|
}
|
|
$rx = ")/?$}{$modifiers}";
|
|
$code .= "\n .'{$rx}',";
|
|
$state->regex .= $rx;
|
|
$state->markTail = 0;
|
|
|
|
// if the regex is too large, throw a signaling exception to recompute with smaller chunk size
|
|
set_error_handler(function ($type, $message) { throw false !== strpos($message, $this->signalingException->getMessage()) ? $this->signalingException : new \ErrorException($message); });
|
|
try {
|
|
preg_match($state->regex, '');
|
|
} finally {
|
|
restore_error_handler();
|
|
}
|
|
|
|
$regexpList[$startingMark] = $state->regex;
|
|
}
|
|
|
|
$state->routes[$state->mark][] = [null, null, null, null, false, false, 0];
|
|
unset($state->getVars);
|
|
|
|
return [$regexpList, $state->routes, $code];
|
|
}
|
|
|
|
/**
|
|
* Compiles a regexp tree of subpatterns that matches nested same-prefix routes.
|
|
*
|
|
* @param \stdClass $state A simple state object that keeps track of the progress of the compilation,
|
|
* and gathers the generated switch's "case" and "default" statements
|
|
*/
|
|
private function compileStaticPrefixCollection(StaticPrefixCollection $tree, \stdClass $state, int $prefixLen, array &$conditions): string
|
|
{
|
|
$code = '';
|
|
$prevRegex = null;
|
|
$routes = $tree->getRoutes();
|
|
|
|
foreach ($routes as $i => $route) {
|
|
if ($route instanceof StaticPrefixCollection) {
|
|
$prevRegex = null;
|
|
$prefix = substr($route->getPrefix(), $prefixLen);
|
|
$state->mark += \strlen($rx = "|{$prefix}(?");
|
|
$code .= "\n .".self::export($rx);
|
|
$state->regex .= $rx;
|
|
$code .= $this->indent($this->compileStaticPrefixCollection($route, $state, $prefixLen + \strlen($prefix), $conditions));
|
|
$code .= "\n .')'";
|
|
$state->regex .= ')';
|
|
++$state->markTail;
|
|
continue;
|
|
}
|
|
|
|
list($name, $regex, $vars, $route, $hasTrailingSlash, $hasTrailingVar) = $route;
|
|
$compiledRoute = $route->compile();
|
|
$vars = array_merge($state->hostVars, $vars);
|
|
|
|
if ($compiledRoute->getRegex() === $prevRegex) {
|
|
$state->routes[$state->mark][] = $this->compileRoute($route, $name, $vars, $hasTrailingSlash, $hasTrailingVar, $conditions);
|
|
continue;
|
|
}
|
|
|
|
$state->mark += 3 + $state->markTail + \strlen($regex) - $prefixLen;
|
|
$state->markTail = 2 + \strlen($state->mark);
|
|
$rx = sprintf('|%s(*:%s)', substr($regex, $prefixLen), $state->mark);
|
|
$code .= "\n .".self::export($rx);
|
|
$state->regex .= $rx;
|
|
|
|
$prevRegex = $compiledRoute->getRegex();
|
|
$state->routes[$state->mark] = [$this->compileRoute($route, $name, $vars, $hasTrailingSlash, $hasTrailingVar, $conditions)];
|
|
}
|
|
|
|
return $code;
|
|
}
|
|
|
|
/**
|
|
* Compiles a single Route to PHP code used to match it against the path info.
|
|
*/
|
|
private function compileRoute(Route $route, string $name, $vars, bool $hasTrailingSlash, bool $hasTrailingVar, array &$conditions): array
|
|
{
|
|
$defaults = $route->getDefaults();
|
|
|
|
if (isset($defaults['_canonical_route'])) {
|
|
$name = $defaults['_canonical_route'];
|
|
unset($defaults['_canonical_route']);
|
|
}
|
|
|
|
if ($condition = $route->getCondition()) {
|
|
$condition = $this->getExpressionLanguage()->compile($condition, ['context', 'request']);
|
|
$condition = $conditions[$condition] ?? $conditions[$condition] = (false !== strpos($condition, '$request') ? 1 : -1) * \count($conditions);
|
|
} else {
|
|
$condition = null;
|
|
}
|
|
|
|
return [
|
|
['_route' => $name] + $defaults,
|
|
$vars,
|
|
array_flip($route->getMethods()) ?: null,
|
|
array_flip($route->getSchemes()) ?: null,
|
|
$hasTrailingSlash,
|
|
$hasTrailingVar,
|
|
$condition,
|
|
];
|
|
}
|
|
|
|
private function getExpressionLanguage(): ExpressionLanguage
|
|
{
|
|
if (null === $this->expressionLanguage) {
|
|
if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
|
|
throw new \LogicException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
|
|
}
|
|
$this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders);
|
|
}
|
|
|
|
return $this->expressionLanguage;
|
|
}
|
|
|
|
private function indent(string $code, int $level = 1): string
|
|
{
|
|
return preg_replace('/^./m', str_repeat(' ', $level).'$0', $code);
|
|
}
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
public static function export($value): string
|
|
{
|
|
if (null === $value) {
|
|
return 'null';
|
|
}
|
|
if (!\is_array($value)) {
|
|
if (\is_object($value)) {
|
|
throw new \InvalidArgumentException('Symfony\Component\Routing\Route cannot contain objects.');
|
|
}
|
|
|
|
return str_replace("\n", '\'."\n".\'', var_export($value, true));
|
|
}
|
|
if (!$value) {
|
|
return '[]';
|
|
}
|
|
|
|
$i = 0;
|
|
$export = '[';
|
|
|
|
foreach ($value as $k => $v) {
|
|
if ($i === $k) {
|
|
++$i;
|
|
} else {
|
|
$export .= self::export($k).' => ';
|
|
|
|
if (\is_int($k) && $i < $k) {
|
|
$i = 1 + $k;
|
|
}
|
|
}
|
|
|
|
$export .= self::export($v).', ';
|
|
}
|
|
|
|
return substr_replace($export, ']', -2);
|
|
}
|
|
}
|