DrupalDateTime.php in Drupal 8
Same filename and directory in other branches
Namespace
Drupal\Core\DatetimeFile
core/lib/Drupal/Core/Datetime/DrupalDateTime.phpView source
<?php
namespace Drupal\Core\Datetime;
use Drupal\Component\Datetime\DateTimePlus;
use Drupal\Core\StringTranslation\StringTranslationTrait;
/**
* Extends DateTimePlus().
*
* This class extends the basic component and adds in Drupal-specific
* handling, like translation of the format() method.
*
* Static methods in base class can also be used to create DrupalDateTime objects.
* For example:
*
* DrupalDateTime::createFromArray( array('year' => 2010, 'month' => 9, 'day' => 28) )
*
* @see \Drupal\Component\Datetime\DateTimePlus
*/
class DrupalDateTime extends DateTimePlus {
use StringTranslationTrait;
/**
* Formatted strings translation cache.
*
* Translation cache represents an instance storage for formatted date
* strings. It contains a multidimensional array where:
* - first level keys - are drupal language codes;
* - second level keys - are each symbols of given format string (like 'F');
* - third level keys - are original matched strings related to the symbol;
* - values - are translated or not-translated original strings (depends on
* if a particular symbol represents translatable value according to PHP's
* date() format character).
*
* For example:
* @code
* [
* 'en' => [
* 'F' => [
* 'November' => t('November'),
* 'December' => t('December'),
* ],
* 'd' => [
* '10' => '10',
* '31' => '31',
* ],
* ],
* ]
* @endcode
*
* @var array
*/
protected $formatTranslationCache;
/**
* Constructs a date object.
*
* @param string $time
* A date/input_time_adjusted string. Defaults to 'now'.
* @param mixed $timezone
* PHP DateTimeZone object, string or NULL allowed.
* Defaults to NULL. Note that the $timezone parameter and the current
* timezone are ignored when the $time parameter either is a UNIX timestamp
* (e.g. @946684800) or specifies a timezone
* (e.g. 2010-01-28T15:00:00+02:00).
* @see http://php.net/manual/datetime.construct.php
* @param array $settings
* - validate_format: (optional) Boolean choice to validate the
* created date using the input format. The format used in
* createFromFormat() allows slightly different values than format().
* Using an input format that works in both functions makes it
* possible to a validation step to confirm that the date created
* from a format string exactly matches the input. This option
* indicates the format can be used for validation. Defaults to TRUE.
* - langcode: (optional) Used to control the result of the format() method.
* Defaults to NULL.
* - debug: (optional) Boolean choice to leave debug values in the
* date object for debugging purposes. Defaults to FALSE.
*/
public function __construct($time = 'now', $timezone = NULL, $settings = []) {
if (!isset($settings['langcode'])) {
$settings['langcode'] = \Drupal::languageManager()
->getCurrentLanguage()
->getId();
}
// Instantiate the parent class.
parent::__construct($time, $timezone, $settings);
}
/**
* Overrides prepareTimezone().
*
* Override basic component timezone handling to use Drupal's
* knowledge of the preferred user timezone.
*/
protected function prepareTimezone($timezone) {
if (empty($timezone)) {
// Fallback to user or system default timezone.
$timezone = date_default_timezone_get();
}
return parent::prepareTimezone($timezone);
}
/**
* Overrides format().
*
* @param string $format
* A format string using either PHP's date().
* @param array $settings
* - timezone: (optional) String timezone name. Defaults to the timezone
* of the date object.
* - langcode: (optional) String two letter language code used to control
* the result of the format() method. Defaults to NULL.
*
* @return string
* The formatted value of the date. Since the format may contain user input,
* this value should be escaped when output.
*/
public function format($format, $settings = []) {
$langcode = !empty($settings['langcode']) ? $settings['langcode'] : $this->langcode;
$value = '';
// Format the date and catch errors.
try {
// Encode markers that should be translated. 'A' becomes
// '\xEF\AA\xFF'. xEF and xFF are invalid UTF-8 sequences,
// and we assume they are not in the input string.
// Paired backslashes are isolated to prevent errors in
// read-ahead evaluation. The read-ahead expression ensures that
// A matches, but not \A.
$format = preg_replace([
'/\\\\\\\\/',
'/(?<!\\\\)([AaeDlMTF])/',
], [
"",
"",
], $format);
// Call date_format().
$format = parent::format($format, $settings);
// Translates a formatted date string.
$translation_callback = function ($matches) use ($langcode) {
$code = $matches[1];
$string = $matches[2];
if (!isset($this->formatTranslationCache[$langcode][$code][$string])) {
$options = [
'langcode' => $langcode,
];
if ($code == 'F') {
$options['context'] = 'Long month name';
}
if ($code == '') {
$this->formatTranslationCache[$langcode][$code][$string] = $string;
}
else {
$this->formatTranslationCache[$langcode][$code][$string] = $this
->t($string, [], $options);
}
}
return $this->formatTranslationCache[$langcode][$code][$string];
};
// Translate the marked sequences.
$value = preg_replace_callback('/\\xEF([AaeDlMTF]?)(.*?)\\xFF/', $translation_callback, $format);
} catch (\Exception $e) {
$this->errors[] = $e
->getMessage();
}
return $value;
}
}
Classes
Name | Description |
---|---|
DrupalDateTime | Extends DateTimePlus(). |