62 lines
1.5 KiB
PHP
62 lines
1.5 KiB
PHP
<?php
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class osu_cacher
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{
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public static $hash_function = "md5";
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// public static $hash_function = "crc32";
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private $root;
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private $cache_root;
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public function __construct(string $root, string $cache_root)
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{
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$this->root = $root;
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$this->cache_root = $cache_root;
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if (!file_exists($cache_root)) mkdir($cache_root, 0777, true);
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}
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public function get_root() : string
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{
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return $this->root;
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}
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public function get_cache_root() : string
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{
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return $this->cache_root;
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}
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public function get_cached_path(string $path) : string
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{
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return str_replace($this->root, $this->cache_root, $path);
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}
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public function is_cached(string $path) : bool
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{
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return file_exists($this->get_cached_path($path));
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}
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public function get_cache(string $path, $hash=false)// : array|bool // see you again in php8
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{
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if (!$this->is_cached($path)) return false;
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$raw = file_get_contents($this->get_cached_path($path));
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$json = json_decode($raw, true);
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if (empty($json)) return false; // cache had empty save
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if ($hash !== false && $hash != ($json["hash"] ?? false)) return false; // hash check failed
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return $json;
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}
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public function set_cache(string $path, array $content) : void
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{
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$cache_path = $this->get_cached_path($path);
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$cache_dir = dirname($cache_path);
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if (!file_exists($cache_dir)) mkdir($cache_dir, 0777, true);
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if (!isset($content["hash"])) $content["hash"] = hash_file(self::$hash_function, $path);
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$encoded = json_encode($content);
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file_put_contents($cache_path, $encoded);
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}
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} |