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<?php namespace Cornford\Setter; |
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use DateTime; |
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use Illuminate\Database\DatabaseManager as Query; |
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use Illuminate\Config\Repository; |
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use Illuminate\Cache\Repository as Cache; |
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abstract class SettingBase { |
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const LOCATION_DATABASE = 'database'; |
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const LOCATION_CACHE = 'cache'; |
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const CACHE_TAG = 'setter::'; |
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/** |
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* Database |
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* |
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* @var \Illuminate\Database\DatabaseManager |
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*/ |
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protected $database; |
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/** |
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* Config |
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* |
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* @var \Illuminate\Config\Repository |
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*/ |
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protected $config; |
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/** |
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* Cache |
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* |
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* @var \Illuminate\Cache\Repository |
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*/ |
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protected $cache; |
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/** |
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* Cache |
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* |
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* @var integer|datetime|boolean |
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*/ |
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protected $expiry = true; |
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/** |
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* Construct Setter |
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* |
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* @param Query $database |
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* @param Repository $config |
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* @param Cache $cache |
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*/ |
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public function __construct(Query $database, Repository $config, Cache $cache) |
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{ |
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$this->database = $database; |
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$this->config = $config; |
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$this->cache = $cache; |
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} |
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/** |
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* Return a key with an attached cache tag |
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* |
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* @param string $key |
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* |
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* @return string |
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*/ |
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protected function attachTag($key) |
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{ |
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return self::CACHE_TAG . $key; |
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} |
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/** |
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* Check a setting exists in cache |
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* |
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* @param string $key |
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* |
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* @return boolean |
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*/ |
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public function cacheHas($key) |
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{ |
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return $this->cache->has($this->attachTag($key)) ? true : false; |
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} |
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/** |
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* Forget a cached setting by key |
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* |
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* @param string $key |
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* |
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* @return boolean |
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*/ |
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public function cacheForget($key) |
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{ |
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$this->cache |
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->forget($this->attachTag($key)); |
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return true; |
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} |
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/** |
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* Clear all cached settings |
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* |
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* @return boolean |
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*/ |
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public function cacheClear() |
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{ |
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$this->cache |
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->flush(); |
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return true; |
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} |
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/** |
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* Check a setting exists in config |
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* |
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* @param string $key |
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* |
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* @return boolean |
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*/ |
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public function configHas($key) |
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{ |
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return $this->config->has($key) ? true : false; |
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} |
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/** |
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* Arrange results into an associative array |
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* |
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* @param array $results |
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* @param string $key |
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* |
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* @return array |
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*/ |
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protected function arrangeResults($results, $key = null) |
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{ |
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$return = array(); |
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foreach ($results as $path => $value) { |
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$parts = strpos($path, '.') > 0 ? explode('.', trim(preg_replace('/^' . $key . '/', '', $path), '.')) : array($path); |
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$target =& $return; |
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foreach ($parts as $part) { |
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$target =& $target[$part]; |
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} |
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$target = $this->decodeJson($value); |
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} |
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return $return; |
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} |
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/** |
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* Return result values |
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* |
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* @param array $results |
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* @param string $key |
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* |
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* @return string|array |
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*/ |
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protected function returnResults($results = array(), $key) |
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{ |
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$items = $this->arrangeResults($results, $key); |
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$return = $this->combineResults($items, $key); |
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if ((!is_array($this->returnConfig($key)) || count($this->returnConfig($key)) == 0) && |
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(array_key_exists($key, $return) || array_key_exists('', $return)) |
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&& count($return) == 1 |
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) { |
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$return = reset($return); |
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} |
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$this->cache->forget($this->attachTag($key)); |
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$this->cache->add($this->attachTag($key), $return, $this->expiry); |
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return $this->decodeJson($return); |
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} |
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/** |
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* Combine result values from the database and configuration |
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* |
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* @param array $results |
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* @param string $key |
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* |
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* @return array |
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*/ |
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protected function combineResults(array $results = array(), $key) |
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{ |
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$config = $this->returnConfig($key); |
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if (is_array($config)) { |
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return array_replace_recursive($config, ((array_key_exists($key, $results) || array_key_exists('', $results)) ? reset($results) : $results)); |
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} |
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return $results; |
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} |
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/** |
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* Re-cache item and its parents |
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* |
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* @param string $value |
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* @param string $key |
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* |
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* @return void |
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*/ |
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protected function recacheItem($value, $key) |
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{ |
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for ($i = 0; $i <= substr_count($key, '.') - 1; $i++) { |
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$j = $i; |
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$position = 0; |
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while ($j >= 0) { |
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$position =+ strpos($key, '.', $position) + 1; |
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$j--; |
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} |
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$this->cache |
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->forget($this->attachTag(rtrim(substr_replace($key, '', $position), '.'))); |
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} |
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$this->cache |
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->forget($this->attachTag($key)); |
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$this->cache |
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->add($this->attachTag($key), $value, $this->expiry); |
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} |
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/** |
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* Return cache values |
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* |
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* @param string $key |
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* |
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* @return string|array |
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*/ |
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protected function returnCache($key) |
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{ |
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$value = $this->cache->get($this->attachTag($key)); |
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return $this->decodeJson($value); |
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} |
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/** |
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* Return config values |
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* |
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* @param string $key |
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* |
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* @return string|array |
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*/ |
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protected function returnConfig($key) |
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{ |
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$value = $this->config->get($key); |
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return $this->decodeJson($value); |
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} |
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/** |
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* Is the string Json encoded. |
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* |
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* @param string $string |
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* @return boolean |
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*/ |
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protected function isJson($string) |
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{ |
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if (!is_string($string)) { |
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return false; |
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} |
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json_decode($string); |
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return (json_last_error() == JSON_ERROR_NONE); |
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} |
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/** |
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* Decode a Json item. |
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* |
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* @param mixed $value |
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* |
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* @return mixed |
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*/ |
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protected function decodeJson($value) |
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{ |
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if ($this->isJson($value)) { |
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return ($value === '""' || $value === '' ? '' : json_decode($value)); |
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} |
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return $value; |
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} |
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} |
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