daux.io/libs/Cache.php
2020-04-22 22:24:52 +02:00

104 lines
2.4 KiB
PHP

<?php namespace Todaymade\Daux;
use Symfony\Component\Console\Output\OutputInterface;
class Cache
{
public static $printed = false;
public static function getDirectory(): string
{
$dir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'dauxio' . DIRECTORY_SEPARATOR;
if (!Cache::$printed) {
Cache::$printed = true;
Daux::writeln("Using cache dir '$dir'", OutputInterface::VERBOSITY_VERBOSE);
}
return $dir;
}
/**
* Store an item in the cache for a given number of minutes.
*/
public static function put(string $key, string $value): void
{
Cache::ensureCacheDirectoryExists($path = Cache::path($key));
file_put_contents($path, $value);
}
/**
* Create the file cache directory if necessary.
*/
protected static function ensureCacheDirectoryExists(string $path): void
{
$parent = dirname($path);
if (!file_exists($parent)) {
mkdir($parent, 0777, true);
}
}
/**
* Remove an item from the cache.
*/
public static function forget(string $key): bool
{
$path = Cache::path($key);
if (file_exists($path)) {
return unlink($path);
}
return false;
}
/**
* Retrieve an item from the cache by key.
*
* @return mixed
*/
public static function get(string $key): ?string
{
$path = Cache::path($key);
if (file_exists($path)) {
return file_get_contents($path);
}
return null;
}
/**
* Get the full path for the given cache key.
*/
protected static function path(string $key): string
{
$parts = array_slice(str_split($hash = sha1($key), 2), 0, 2);
return Cache::getDirectory() . '/' . implode('/', $parts) . '/' . $hash;
}
public static function clear(): void
{
Cache::rrmdir(Cache::getDirectory());
}
protected static function rrmdir(string $dir): void
{
if (is_dir($dir)) {
$objects = scandir($dir);
foreach ($objects as $object) {
if ($object != '.' && $object != '..') {
if (is_dir($dir . '/' . $object)) {
Cache::rrmdir($dir . '/' . $object);
} else {
unlink($dir . '/' . $object);
}
}
}
rmdir($dir);
}
}
}