daux.io/libs/Cache.php

119 regels
2.7 KiB
PHP

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