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<?php |
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/** |
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* This file is part of tenside/core. |
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* |
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* (c) Christian Schiffler <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* This project is provided in good faith and hope to be usable by anyone. |
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* |
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* @package tenside/core |
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* @author Christian Schiffler <[email protected]> |
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* @copyright 2015 Christian Schiffler <[email protected]> |
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* @license https://github.com/tenside/core/blob/master/LICENSE MIT |
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* @link https://github.com/tenside/core |
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* @filesource |
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*/ |
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namespace Tenside\Core\Util; |
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/** |
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* Generic path following json file handler. |
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* |
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* @author Christian Schiffler <https://github.com/discordier> |
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*/ |
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class JsonFile extends JsonArray |
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{ |
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/** |
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* The filename. |
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* |
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* @var string |
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*/ |
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private $filename; |
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/** |
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* The name of the backup file to create when saving. |
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* |
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* @var null|string |
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*/ |
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private $backupFile; |
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/** |
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* Create a new instance. |
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* |
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* @param string $filename The filename. |
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* |
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* @param null|string $backupFile The name of a backup file to create (if none shall be created, pass null). |
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* The default name of the backup file is the filename with a tilde (~) appended. |
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* |
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* @throws \RuntimeException When the file contents are invalid. |
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*/ |
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public function __construct($filename, $backupFile = '') |
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{ |
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$this->filename = (string) $filename; |
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if ('' === $backupFile) { |
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$backupFile = $filename . '~'; |
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} |
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$this->backupFile = $backupFile; |
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if (file_exists($this->filename)) { |
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try { |
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parent::__construct(file_get_contents($this->filename)); |
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} catch (\Exception $exception) { |
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throw new \RuntimeException('Error: json file ' . $this->filename . ' is invalid.', 1, $exception); |
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} |
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return; |
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} |
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parent::__construct(); |
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} |
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/** |
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* Set a value. |
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* |
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* @param string $path The path of the value. |
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* |
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* @param mixed $value The value to set. |
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* |
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* @return JsonFile |
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*/ |
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public function set($path, $value) |
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{ |
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parent::set($path, $value); |
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$this->save(); |
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return $this; |
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} |
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/** |
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* Retrieve the file name. |
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* |
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* @return string |
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*/ |
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public function getFilename() |
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{ |
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return $this->filename; |
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} |
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/** |
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* Copy the file contents over to the backup. |
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* |
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* @return void |
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*/ |
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private function makeBackup() |
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{ |
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if ((null === $this->backupFile) || !file_exists($this->filename)) { |
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return; |
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} |
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if (!is_dir(dirname($this->backupFile))) { |
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mkdir(dirname($this->backupFile), 0700, true); |
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} |
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copy($this->filename, $this->backupFile); |
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} |
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/** |
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* Save the file data. |
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* |
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* @return JsonFile |
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*/ |
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public function save() |
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{ |
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$this->makeBackup(); |
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if (!is_dir(dirname($this->filename))) { |
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mkdir(dirname($this->filename), 0700, true); |
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} |
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file_put_contents($this->filename, (string) $this); |
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return $this; |
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} |
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} |
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