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<?php
/**
* @file
* Definition of Drupal\Core\Config\FileStorage.
*/
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namespace Drupal\Core\Config;
use Symfony\Component\Yaml\Dumper;
use Symfony\Component\Yaml\Parser;
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/**
* Defines the file storage controller.
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*/
class FileStorage implements StorageInterface {
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/**
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* The filesystem path for configuration objects.
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*
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* @var string
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protected $directory = '';
/**
* A shared YAML dumper instance.
*
* @var Symfony\Component\Yaml\Dumper
*/
protected $dumper;
/**
* A shared YAML parser instance.
*
* @var Symfony\Component\Yaml\Parser
*/
protected $parser;
/**
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* Constructs a new FileStorage controller.
*
* @param string $directory
* A directory path to use for reading and writing of configuration files.
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*/
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public function __construct($directory) {
$this->directory = $directory;
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}
/**
* Returns the path to the configuration file.
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*
* @return string
* The path to the configuration file.
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*/
public function getFilePath($name) {
return $this->directory . '/' . $name . '.' . static::getFileExtension();
}
/**
* Returns the file extension used by the file storage for all configuration files.
*
* @return string
* The file extension.
*/
public static function getFileExtension() {
return 'yml';
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}
/**
* Implements Drupal\Core\Config\StorageInterface::exists().
public function exists($name) {
return file_exists($this->getFilePath($name));
}
/**
* Implements Drupal\Core\Config\StorageInterface::read().
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*
* @throws Symfony\Component\Yaml\Exception\ParseException
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*/
public function read($name) {
if (!$this->exists($name)) {
return FALSE;
}
$data = file_get_contents($this->getFilePath($name));
// @todo Yaml throws a ParseException on invalid data. Is it expected to be
// caught or not?
$data = $this->decode($data);
return $data;
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}
/**
* {@inheritdoc}
*/
public function readMultiple(array $names) {
$list = array();
foreach ($names as $name) {
if ($data = $this->read($name)) {
$list[$name] = $data;
}
}
return $list;
}
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/**
* Implements Drupal\Core\Config\StorageInterface::write().
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*
* @throws Symfony\Component\Yaml\Exception\DumpException
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* @throws \Drupal\Core\Config\StorageException
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*/
public function write($name, array $data) {
$data = $this->encode($data);
$status = @file_put_contents($this->getFilePath($name), $data);
if ($status === FALSE) {
throw new StorageException('Failed to write configuration file: ' . $this->getFilePath($name));
}
return TRUE;
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}
/**
* Implements Drupal\Core\Config\StorageInterface::delete().
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*/
public function delete($name) {
if (!$this->exists($name)) {
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if (!file_exists($this->directory)) {
throw new StorageException($this->directory . '/ not found.');
}
return FALSE;
}
return drupal_unlink($this->getFilePath($name));
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}
/**
* Implements Drupal\Core\Config\StorageInterface::rename().
*/
public function rename($name, $new_name) {
$status = @rename($this->getFilePath($name), $this->getFilePath($new_name));
if ($status === FALSE) {
throw new StorageException('Failed to rename configuration file from: ' . $this->getFilePath($name) . ' to: ' . $this->getFilePath($new_name));
}
return TRUE;
}
/**
* Gets the YAML dumper instance.
*
* @return Symfony\Component\Yaml\Dumper
*/
protected function getDumper() {
if (!isset($this->dumper)) {
$this->dumper = new Dumper();
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// Set Yaml\Dumper's default indentation for nested nodes/collections to
// 2 spaces for consistency with Drupal coding standards.
$this->dumper->setIndentation(2);
}
return $this->dumper;
}
/**
* Gets the YAML parser instance.
*
* @return Symfony\Component\Yaml\Parser
*/
protected function getParser() {
if (!isset($this->parser)) {
$this->parser = new Parser();
}
return $this->parser;
}
* Implements Drupal\Core\Config\StorageInterface::encode().
*
* @throws Symfony\Component\Yaml\Exception\DumpException
public function encode($data) {
// The level where you switch to inline YAML is set to PHP_INT_MAX to ensure
// this does not occur. Also set the exceptionOnInvalidType parameter to
// TRUE, so exceptions are thrown for an invalid data type.
return $this->getDumper()->dump($data, PHP_INT_MAX, 0, TRUE);
}
/**
* Implements Drupal\Core\Config\StorageInterface::decode().
*
* @throws Symfony\Component\Yaml\Exception\ParseException
public function decode($raw) {
$data = $this->getParser()->parse($raw);
// A simple string is valid YAML for any reason.
if (!is_array($data)) {
return FALSE;
return $data;
}
/**
* Implements Drupal\Core\Config\StorageInterface::listAll().
*/
public function listAll($prefix = '') {
// glob() silently ignores the error of a non-existing search directory,
// even with the GLOB_ERR flag.
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if (!file_exists($this->directory)) {
throw new StorageException($this->directory . '/ not found.');
}
$extension = '.' . static::getFileExtension();
$files = new \GlobIterator($this->directory . '/' . $prefix . '*' . $extension);
$names = array();
foreach ($files as $file) {
$names[] = $file->getBasename($extension);
}
return $names;
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/**
* Implements Drupal\Core\Config\StorageInterface::deleteAll().
*/
public function deleteAll($prefix = '') {
$success = TRUE;
$files = $this->listAll($prefix);
foreach ($files as $name) {
if (!$this->delete($name) && $success) {
$success = FALSE;
}
}
return $success;
}