<?php
/**
Copyright 2012-2014 Nick Korbel
This file is part of Booked Scheduler.
Booked Scheduler is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Booked Scheduler is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Booked Scheduler. If not, see <http://www.gnu.org/licenses/>.
*/
require_once(ROOT_DIR . 'lib/external/pear/Config.php');
interface IConfigurationSettings
{
/**
* @param string $file
* @return array
*/
public function GetSettings($file);
/**
* @param array $currentSettings
* @param array $newSettings
* @param bool $removeMissingKeys
* @return array
*/
public function BuildConfig($currentSettings, $newSettings, $removeMissingKeys = false);
/**
* @param string $configFilePath
* @param array $mergedSettings
*/
public function WriteSettings($configFilePath, $mergedSettings);
/**
* @param string $configFilePath
* @return bool
*/
public function CanOverwriteFile($configFilePath);
}
class Configurator implements IConfigurationSettings
{
/**
* @param string $configPhp
* @param string $distPhp
*/
public function Merge($configPhp, $distPhp)
{
if ($this->IsConfigOutOfDate($configPhp, $distPhp))
{
$mergedSettings = $this->GetMerged($configPhp, $distPhp);
$this->WriteSettings($configPhp, $mergedSettings);
}
}
public function WriteSettings($configFilePath, $mergedSettings)
{
$this->CreateBackup($configFilePath);
if (!array_key_exists(Configuration::SETTINGS, $mergedSettings))
{
$mergedSettings = array(Configuration::SETTINGS => $mergedSettings);
}
$config = new Config();
$config->parseConfig($mergedSettings, 'PHPArray');
$config->writeConfig($configFilePath, 'PHPArray', $mergedSettings);
$this->AddErrorReporting($configFilePath);
}
/**
* @param string $configPhp
* @param string $distPhp
* @return string
*/
private function GetMerged($configPhp, $distPhp)
{
$currentSettings = $this->GetSettings($configPhp);
$newSettings = $this->GetSettings($distPhp);
$settings = $this->BuildConfig($currentSettings, $newSettings, true);
return array(Configuration::SETTINGS => $settings);
}
public function GetMergedString($configPhp, $distPhp)
{
$settings = $this->GetMerged($configPhp, $distPhp);
$config = new Config();
$parsed = $config->parseConfig($settings, 'PHPArray');
return $parsed->toString('PHPArray');
}
public function GetSettings($file)
{
$config = new Config();
/** @var $current Config_Container */
$current = $config->parseConfig($file, 'PHPArray');
$currentValues = $current->getItem("section", Configuration::SETTINGS)->toArray();
return $currentValues[Configuration::SETTINGS];
}
public function BuildConfig($currentSettings, $newSettings, $keepMissingKeys = false)
{
foreach ($currentSettings as $key => $value)
{
if (array_key_exists($key, $newSettings))
{
if (is_array($value))
{
$newSettings[$key] = array_merge($newSettings[$key], $value);
}
else
{
$newSettings[$key] = $value;
}
}
else
{
Log::Debug("$key not found");
if ($keepMissingKeys)
{
$newSettings[$key] = $value;
}
}
}
return $newSettings;
}
private function AddErrorReporting($file)
{
$pathinfo = pathinfo($file);
if ($pathinfo['dirname'] != ROOT_DIR . 'config')
{
return;
}
$contents = file_get_contents($file);
$new = str_replace("<?php", "<?php\r\nerror_reporting(E_ALL & ~E_NOTICE & ~E_STRICT);\r\n", $contents);
file_put_contents($file, $new);
}
public function CanOverwriteFile($configFile)
{
if (!is_writable($configFile))
{
return chmod($configFile, 0770);
}
return true;
}
private function CreateBackup($configFilePath)
{
$backupPath = str_replace('.php', time() . '.php', $configFilePath);
copy($configFilePath, $backupPath);
}
private function IsConfigOutOfDate($configPhp, $distPhp)
{
$currentSettings = $this->GetSettings($configPhp);
$newSettings = $this->GetSettings($distPhp);
if ($this->AreKeysTheSame($currentSettings, $newSettings))
{
Log::Debug('Config file is already up to date. Skipping config merge.');
return false;
}
Log::Debug('Config file is out of date. Merging new config options in.');
return true;
}
private function AreKeysTheSame($current, $new)
{
foreach ($new as $key => $val)
{
if (!array_key_exists($key, $current) || (is_array($new[$key]) && is_array($current[$key]) && !$this->AreKeysTheSame($current[$key], $new[$key])))
{
Log::Debug('Could not find key in config file: %s', $key);
return false;
}
}
return true;
}
}
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