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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @package Zend_Log
*/
namespace Zend\Log\Formatter;
use DateTime;
use Traversable;
/**
* @category Zend
* @package Zend_Log
* @subpackage Formatter
*/
class Base implements FormatterInterface
{
/**
* Format specifier for DateTime objects in event data (default: ISO 8601)
*
* @see http://php.net/manual/en/function.date.php
* @var string
*/
protected $dateTimeFormat = self::DEFAULT_DATETIME_FORMAT;
/**
* Class constructor
*
* @see http://php.net/manual/en/function.date.php
* @param null|string|array|Traversable $dateTimeFormat Format for DateTime objects
*/
public function __construct($dateTimeFormat = null)
{
if ($dateTimeFormat instanceof Traversable) {
$dateTimeFormat = iterator_to_array($dateTimeFormat);
}
if (is_array($dateTimeFormat)) {
$dateTimeFormat = isset($dateTimeFormat['dateTimeFormat'])? $dateTimeFormat['dateTimeFormat'] : null;
}
if (null !== $dateTimeFormat) {
$this->dateTimeFormat = $dateTimeFormat;
}
}
/**
* Formats data to be written by the writer.
*
* @param array $event event data
* @return array
*/
public function format($event)
{
foreach ($event as $key => $value) {
// Keep extra as an array
if ('extra' === $key) {
$event[$key] = self::format($value);
} else {
$event[$key] = $this->normalize($value);
}
}
return $event;
}
/**
* Normalize all non-scalar data types (except null) in a string value
*
* @param mixed $value
* @return mixed
*/
protected function normalize($value)
{
if (is_scalar($value) || null === $value) {
return $value;
}
if ($value instanceof DateTime) {
$value = $value->format($this->getDateTimeFormat());
} elseif (is_array($value) || $value instanceof Traversable) {
if ($value instanceof Traversable) {
$value = iterator_to_array($value);
}
foreach ($value as $key => $subvalue) {
$value[$key] = $this->normalize($subvalue);
}
$value = json_encode($value);
} elseif (is_object($value) && !method_exists($value,'__toString')) {
$value = sprintf('object(%s) %s', get_class($value), json_encode($value));
} elseif (is_resource($value)) {
$value = sprintf('resource(%s)', get_resource_type($value));
} elseif (!is_object($value)) {
$value = gettype($value);
}
return (string) $value;
}
/**
* {@inheritDoc}
*/
public function getDateTimeFormat()
{
return $this->dateTimeFormat;
}
/**
* {@inheritDoc}
*/
public function setDateTimeFormat($dateTimeFormat)
{
$this->dateTimeFormat = (string) $dateTimeFormat;
return $this;
}
}
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