DivinerDiskCache.php
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DivinerDiskCache.php
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	<?php

	abstract class DivinerDiskCache extends Phobject {

	private $cache;

	public function __construct($cache_directory, $name) {
	$dir_cache = id(new PhutilDirectoryKeyValueCache())
	->setCacheDirectory($cache_directory);
	$profiled_cache = id(new PhutilKeyValueCacheProfiler($dir_cache))
	->setProfiler(PhutilServiceProfiler::getInstance())
	->setName($name);
	$this->cache = $profiled_cache;
	}

	protected function getCache() {
	return $this->cache;
	}

	public function delete() {
	$this->getCache()->destroyCache();
	return $this;
	}

	/**
	* Convert a long-form hash key like `ccbbaaaaaaaaaaaaaaaaaaaaaaaaaaaaN` into
	* a shortened directory form, like `cc/bb/aaaaaaaaN`. In conjunction with
	* @{class:PhutilDirectoryKeyValueCache}, this gives us nice directories
	* inside `.divinercache` instead of a million hash files with huge names at
	* the top level.
	*/
	protected function getHashKey($hash) {
	return implode(
	'/',
	array(
	substr($hash, 0, 2),
	substr($hash, 2, 2),
	substr($hash, 4, 8),
	));
	}

	}