Rewritten parser

libraries/osu_cacher.php

@@ -0,0 +1,50 @@
+<?php
+class osu_cacher
+{
+	private $root;
+	private $cache_root;
+	
+	public function __construct(string $root, string $cache_root)
+	{
+		$this->root = $root;
+		$this->cache_root = $cache_root;
+	}
+	
+	public function get_root() : string
+	{
+		return $this->root;
+	}
+	
+	public function get_cache_root() : string
+	{
+		return $this->cache_root;
+	}
+	
+	public function get_cached_path(string $path) : string
+	{
+		return str_replace($this->root, $this->cache_root, $path);
+	}
+	
+	public function is_cached(string $path) : bool
+	{
+		return file_exists($this->get_cached_path($path));
+	}
+	
+	public function get_cached(string $path, $hash=false)// : array|bool // see you again in php8
+	{
+		if (!is_cached($path)) return false;
+		
+		$raw = file_get_contents($this->get_cached_path($path));
+		$json = json_decode($raw, true);
+		
+		if ($hash !== false && $hash != $json["hash"]) return false; // hash check failed
+		
+		return $json;
+	}
+	
+	public function set_cache(string $path, array $content) : void
+	{
+		$encoded = json_encode($content);
+		file_put_contents($this->get_cached_path($path), $encoded);
+	}
+}