forked from PHP/Router
71 lines
1.7 KiB
PHP
71 lines
1.7 KiB
PHP
<?php
|
|
|
|
class TrieRouter implements Router
|
|
{
|
|
public array $root = [];
|
|
|
|
// Add route to the trie
|
|
public function add(string $method, string $route, callable $handler): Router
|
|
{
|
|
$node = &$this->root[$method];
|
|
// Expand the route into segments and make dynamic segments into a common placeholder
|
|
$segments = array_map(function($segment) {
|
|
return str_starts_with($segment, ':') ? ':x' : $segment;
|
|
}, explode('/', trim($route, '/')));
|
|
|
|
foreach ($segments as $segment) {
|
|
if (!isset($node[$segment])) {
|
|
$node[$segment] = ['_children' => [], '_handler' => null];
|
|
}
|
|
$node = &$node[$segment]['_children'];
|
|
}
|
|
|
|
$node['_handler'] = $handler;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// Find and handle the route
|
|
public function lookup(string $method, string $uri): array
|
|
{
|
|
$node = &$this->root[$method];
|
|
$segments = explode('/', trim($uri, '/'));
|
|
$params = [];
|
|
|
|
foreach ($segments as $segment) {
|
|
if (isset($node[$segment])) {
|
|
$node = &$node[$segment]['_children'];
|
|
} else {
|
|
// Handle dynamic parameters (e.g., :id)
|
|
$dynamicSegment = $this->matchDynamicSegment($node, $segment);
|
|
if ($dynamicSegment) {
|
|
$params[] = $segment;
|
|
$node = &$node[$dynamicSegment]['_children'];
|
|
} else {
|
|
return ['code' => 404];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check if a handler exists for the current node
|
|
if (isset($node['_handler'])) return ['code' => 200, 'handler' => $node['_handler'], 'params' => $params];
|
|
|
|
return ['code' => 404];
|
|
}
|
|
|
|
// Match dynamic route segments like ':id'
|
|
private function matchDynamicSegment(array $node, string $segment)
|
|
{
|
|
foreach ($node as $key => $value) {
|
|
if (strpos($key, ':') === 0) return $key;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public function clear(): Router
|
|
{
|
|
$this->root = [];
|
|
return $this;
|
|
}
|
|
}
|