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Start of ConfigMetadata
<?php
namespace Drupal\Core\Config;
class ConfigMetadata {
/**
* @var \Drupal\Core\Config\Config
*/
protected $config;
/**
* @var array
*/
protected $data;
/**
* @var \Drupal\Core\Config\StorageInterface
*/
protected $storage;
/**
* @var array
*/
protected $metadata;
/**
* @var string
*/
protected $pattern;
function __construct(Config $config, StorageInterface $storage) {
$this->config = $config;
$this->storage = $storage;
}
public function get() {
$this->flatten($this->config->get());
return $this->read();
}
protected function flatten($config, $prefix = '') {
foreach ($config as $key => $data) {
$index = $prefix . $key;
if (is_array($data)) {
$this->flatten($data, $index . '.');
}
else {
$this->data[$index] = $data;
}
}
}
protected function read() {
$metadata = $this->readMeta($this->config->getName());
$return = array();
foreach ($this->data as $key => $value) {
$matches = FALSE;
if (isset($this->metadata[$key])) {
$current_key = $key;
$metadata_key= $key;
}
else {
for ($current_key = $key; $current_key ; $current_key = substr($current_key, 0, strrpos($current_key, '.'))) {
if (preg_match($this->pattern, $current_key, $matches)) {
$metadata_key = $matches[1] . '*' . $matches[3];
break;
}
}
}
if ($current_key) {
$current = $metadata[$metadata_key];
if (isset($current['include'])) {
if (preg_match('/\[(.*)]/', $current['include'], $include_matches)) {
$include_key = preg_replace($this->convertPattern($include_matches[1], '\[', '\]'), $matches[2], $current['include']);
}
else {
$include_key = $current['include'];
}
$metadata += $this->readMeta($include_key, "$current_key.");
}
if (isset($metadata[$key])) {
$return[$key] = $metadata[$key];
}
}
}
return $return;
}
protected function pattern($data) {
$patterns = array();
foreach (array_keys($data) as $key) {
if (strpos($key, '*') !== FALSE) {
$patterns[$key] = $this->convertPattern($key, '^', '$');
}
}
if ($patterns) {
if ($this->pattern) {
$this->pattern .= '|';
}
$this->pattern .= implode('|', $patterns);
}
}
protected function convertPattern($string, $start, $end) {
return "/$start(" . str_replace('\*', ')(.*)(', preg_quote($string, '/')) . ")$end/";
}
protected function readMeta($filename, $prefix = '') {
if (!$read = $this->storage->read("meta." . $filename)) {
return array();
}
$metadata = array();
foreach ($read as $key => $value) {
$metadata[$prefix . $key] = $value;
}
$this->pattern($metadata);
return $metadata;
}
}
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