CacheDriver: moved to subdirectory

inc/Data/Driver/Cache/RedisCacheDriver.php

@@ -0,0 +1,69 @@
+<?php
+namespace Vichan\Data\Driver\Cache;
+
+defined('TINYBOARD') or exit;
+
+
+class RedisCacheDriver implements CacheDriver {
+	use CacheDriverTrait;
+
+	private string $prefix;
+	private \Redis $inner;
+
+	public function __construct(string $prefix, string $host, ?int $port, ?string $password, int $database) {
+		$this->inner = new \Redis();
+		$maybe_unix = self::asUnixSocketPath($host);
+
+		if ($maybe_unix !== null) {
+			$this->inner->connect($maybe_unix);
+		} elseif ($port === null) {
+			$this->inner->connect($host);
+		} else {
+			// IP + port.
+			$this->inner->connect($host, $port);
+		}
+		if ($password) {
+			$this->inner->auth($password);
+		}
+		if (!$this->inner->setOption(\Redis::OPT_SERIALIZER, \Redis::SERIALIZER_JSON)) {
+			throw new \RuntimeException('Unable to configure Redis serializer');
+		}
+		if (!$this->inner->select($database)) {
+			throw new \RuntimeException('Unable to connect to Redis database!');
+		}
+
+		$this->prefix = $prefix;
+	}
+
+	public function get(string $key): mixed {
+		$ret = $this->inner->get($this->prefix . $key);
+		if ($ret === false) {
+			return null;
+		}
+		if ($ret === null) {
+			return false;
+		}
+		return $ret;
+	}
+
+	public function set(string $key, mixed $value, mixed $expires = false): void {
+		$value = $value === false ? null : $value;
+		if ($expires === false) {
+			$this->inner->set($this->prefix . $key, $value);
+		} else {
+			$this->inner->setEx($this->prefix . $key, $expires, $value);
+		}
+	}
+
+	public function delete(string $key): void {
+		$this->inner->del($this->prefix . $key);
+	}
+
+	public function flush(): void {
+		if (empty($this->prefix)) {
+			$this->inner->flushDB();
+		} else {
+			$this->inner->unlink($this->inner->keys("{$this->prefix}*"));
+		}
+	}
+}