testing

PhabricatorConfigLocalSource.php
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			<?php

			final class PhabricatorConfigLocalSource extends PhabricatorConfigProxySource {

			public function __construct() {
			$config = $this->loadConfig();
			$this->setSource(new PhabricatorConfigDictionarySource($config));
			}

			public function setKeys(array $keys) {
			$result = parent::setKeys($keys);
			$this->saveConfig();
			return $result;
			}

			public function deleteKeys(array $keys) {
			$result = parent::deleteKeys($keys);
			$this->saveConfig();
			return parent::deleteKeys($keys);
			}

			private function loadConfig() {
			$path = $this->getConfigPath();

			if (!Filesystem::pathExists($path)) {
			return array();
			}

			try {
			$data = Filesystem::readFile($path);
			} catch (FilesystemException $ex) {
			throw new PhutilProxyException(
			pht(
			'Configuration file "%s" exists, but could not be read.',
			$path),
			$ex);
			}

			try {
			$result = phutil_json_decode($data);
			} catch (PhutilJSONParserException $ex) {
			throw new PhutilProxyException(
			pht(
			'Configuration file "%s" exists and is readable, but the content '.
			'is not valid JSON. You may have edited this file manually and '.
			'introduced a syntax error by mistake. Correct the file syntax '.
			'to continue.',
			$path),
			$ex);
			}

			return $result;
			}

			private function saveConfig() {
			$config = $this->getSource()->getAllKeys();
			$json = new PhutilJSON();
			$data = $json->encodeFormatted($config);
			Filesystem::writeFile($this->getConfigPath(), $data);
			}

			private function getConfigPath() {
			$root = dirname(phutil_get_library_root('phabricator'));
			$path = $root.'/conf/local/local.json';
			return $path;
			}

			}