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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Polyfill\Intl\Icu;
use Symfony\Polyfill\Intl\Icu\DateFormat\FullTransformer;
use Symfony\Polyfill\Intl\Icu\Exception\MethodArgumentNotImplementedException;
use Symfony\Polyfill\Intl\Icu\Exception\MethodArgumentValueNotImplementedException;
use Symfony\Polyfill\Intl\Icu\Exception\MethodNotImplementedException;
/**
* Replacement for PHP's native {@link \IntlDateFormatter} class.
*
* The only methods currently supported in this class are:
*
* - {@link __construct}
* - {@link create}
* - {@link format}
* - {@link getCalendar}
* - {@link getDateType}
* - {@link getErrorCode}
* - {@link getErrorMessage}
* - {@link getLocale}
* - {@link getPattern}
* - {@link getTimeType}
* - {@link getTimeZoneId}
* - {@link isLenient}
* - {@link parse}
* - {@link setLenient}
* - {@link setPattern}
* - {@link setTimeZoneId}
* - {@link setTimeZone}
*
* @author Igor Wiedler <igor@wiedler.ch>
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @internal
*/
abstract class IntlDateFormatter
{
/**
* The error code from the last operation.
*
* @var int
*/
protected $errorCode = Icu::U_ZERO_ERROR;
/**
* The error message from the last operation.
*
* @var string
*/
protected $errorMessage = 'U_ZERO_ERROR';
/* date/time format types */
public const NONE = -1;
public const FULL = 0;
public const LONG = 1;
public const MEDIUM = 2;
public const SHORT = 3;
/* date format types */
public const RELATIVE_FULL = 128;
public const RELATIVE_LONG = 129;
public const RELATIVE_MEDIUM = 130;
public const RELATIVE_SHORT = 131;
/* calendar formats */
public const TRADITIONAL = 0;
public const GREGORIAN = 1;
/**
* Patterns used to format the date when no pattern is provided.
*/
private $defaultDateFormats = [
self::NONE => '',
self::FULL => 'EEEE, MMMM d, y',
self::LONG => 'MMMM d, y',
self::MEDIUM => 'MMM d, y',
self::SHORT => 'M/d/yy',
self::RELATIVE_FULL => 'EEEE, MMMM d, y',
self::RELATIVE_LONG => 'MMMM d, y',
self::RELATIVE_MEDIUM => 'MMM d, y',
self::RELATIVE_SHORT => 'M/d/yy',
];
/**
* Patterns used to format the time when no pattern is provided.
*/
private $defaultTimeFormats = [
self::FULL => 'h:mm:ss a zzzz',
self::LONG => 'h:mm:ss a z',
self::MEDIUM => 'h:mm:ss a',
self::SHORT => 'h:mm a',
];
private $dateType;
private $timeType;
/**
* @var string
*/
private $pattern;
/**
* @var \DateTimeZone
*/
private $dateTimeZone;
/**
* @var bool
*/
private $uninitializedTimeZoneId = false;
/**
* @var string
*/
private $timezoneId;
/**
* @var bool
*/
private $isRelativeDateType = false;
/**
* @param string|null $locale The locale code. The only currently supported locale is "en" (or null using the default locale, i.e. "en")
* @param \IntlTimeZone|\DateTimeZone|string|null $timezone Timezone identifier
* @param \IntlCalendar|int|null $calendar Calendar to use for formatting or parsing. The only currently
* supported value is IntlDateFormatter::GREGORIAN (or null using the default calendar, i.e. "GREGORIAN")
*
* @see https://php.net/intldateformatter.create
* @see http://userguide.icu-project.org/formatparse/datetime
*
* @throws MethodArgumentValueNotImplementedException When $locale different than "en" or null is passed
* @throws MethodArgumentValueNotImplementedException When $calendar different than GREGORIAN is passed
*/
public function __construct(?string $locale, ?int $dateType, ?int $timeType, $timezone = null, $calendar = null, ?string $pattern = '')
{
if ('en' !== $locale && null !== $locale) {
throw new MethodArgumentValueNotImplementedException(__METHOD__, 'locale', $locale, 'Only the locale "en" is supported');
}
if (self::GREGORIAN !== $calendar && null !== $calendar) {
throw new MethodArgumentValueNotImplementedException(__METHOD__, 'calendar', $calendar, 'Only the GREGORIAN calendar is supported');
}
if (\PHP_VERSION_ID >= 80100) {
if (null === $dateType) {
@trigger_error('Passing null to parameter #2 ($dateType) of type int is deprecated', \E_USER_DEPRECATED);
}
if (null === $timeType) {
@trigger_error('Passing null to parameter #3 ($timeType) of type int is deprecated', \E_USER_DEPRECATED);
}
}
$this->dateType = $dateType ?? self::FULL;
$this->timeType = $timeType ?? self::FULL;
if ('' === ($pattern ?? '')) {
$pattern = $this->getDefaultPattern();
}
$this->setPattern($pattern);
$this->setTimeZone($timezone);
if (\in_array($this->dateType, [self::RELATIVE_FULL, self::RELATIVE_LONG, self::RELATIVE_MEDIUM, self::RELATIVE_SHORT], true)) {
$this->isRelativeDateType = true;
}
}
/**
* Static constructor.
*
* @param string|null $locale The locale code. The only currently supported locale is "en" (or null using the default locale, i.e. "en")
* @param \IntlTimeZone|\DateTimeZone|string|null $timezone Timezone identifier
* @param \IntlCalendar|int|null $calendar Calendar to use for formatting or parsing; default is Gregorian
* One of the calendar constants
*
* @return static
*
* @see https://php.net/intldateformatter.create
* @see http://userguide.icu-project.org/formatparse/datetime
*
* @throws MethodArgumentValueNotImplementedException When $locale different than "en" or null is passed
* @throws MethodArgumentValueNotImplementedException When $calendar different than GREGORIAN is passed
*/
public static function create(?string $locale, ?int $dateType, ?int $timeType, $timezone = null, int $calendar = null, ?string $pattern = '')
{
return new static($locale, $dateType, $timeType, $timezone, $calendar, $pattern);
}
/**
* Format the date/time value (timestamp) as a string.
*
* @param int|string|\DateTimeInterface $datetime The timestamp to format
*
* @return string|bool The formatted value or false if formatting failed
*
* @see https://php.net/intldateformatter.format
*
* @throws MethodArgumentValueNotImplementedException If one of the formatting characters is not implemented
*/
public function format($datetime)
{
// intl allows timestamps to be passed as arrays - we don't
if (\is_array($datetime)) {
$message = 'Only Unix timestamps and DateTime objects are supported';
throw new MethodArgumentValueNotImplementedException(__METHOD__, 'datetime', $datetime, $message);
}
if (\is_string($datetime) && $dt = \DateTime::createFromFormat('U', $datetime)) {
$datetime = $dt;
}
// behave like the intl extension
$argumentError = null;
if (!\is_int($datetime) && !$datetime instanceof \DateTimeInterface) {
$argumentError = sprintf('datefmt_format: string \'%s\' is not numeric, which would be required for it to be a valid date', $datetime);
}
if (null !== $argumentError) {
Icu::setError(Icu::U_ILLEGAL_ARGUMENT_ERROR, $argumentError);
$this->errorCode = Icu::getErrorCode();
$this->errorMessage = Icu::getErrorMessage();
return false;
}
if ($datetime instanceof \DateTimeInterface) {
$datetime = $datetime->format('U');
}
$pattern = $this->getPattern();
$formatted = '';
if ($this->isRelativeDateType && $formatted = $this->getRelativeDateFormat($datetime)) {
if (self::NONE === $this->timeType) {
$pattern = '';
} else {
$pattern = $this->defaultTimeFormats[$this->timeType];
if (\in_array($this->dateType, [self::RELATIVE_MEDIUM, self::RELATIVE_SHORT], true)) {
$formatted .= ', ';
} else {
$formatted .= ' at ';
}
}
}
$transformer = new FullTransformer($pattern, $this->getTimeZoneId());
$formatted .= $transformer->format($this->createDateTime($datetime));
// behave like the intl extension
Icu::setError(Icu::U_ZERO_ERROR);
$this->errorCode = Icu::getErrorCode();
$this->errorMessage = Icu::getErrorMessage();
return $formatted;
}
/**
* Not supported. Formats an object.
*
* @return string The formatted value
*
* @see https://php.net/intldateformatter.formatobject
*
* @throws MethodNotImplementedException
*/
public static function formatObject($datetime, $format = null, string $locale = null)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Returns the formatter's calendar.
*
* @return int The calendar being used by the formatter. Currently always returns
* IntlDateFormatter::GREGORIAN.
*
* @see https://php.net/intldateformatter.getcalendar
*/
public function getCalendar()
{
return self::GREGORIAN;
}
/**
* Not supported. Returns the formatter's calendar object.
*
* @return object The calendar's object being used by the formatter
*
* @see https://php.net/intldateformatter.getcalendarobject
*
* @throws MethodNotImplementedException
*/
public function getCalendarObject()
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Returns the formatter's datetype.
*
* @return int The current value of the formatter
*
* @see https://php.net/intldateformatter.getdatetype
*/
public function getDateType()
{
return $this->dateType;
}
/**
* Returns formatter's last error code. Always returns the U_ZERO_ERROR class constant value.
*
* @return int The error code from last formatter call
*
* @see https://php.net/intldateformatter.geterrorcode
*/
public function getErrorCode()
{
return $this->errorCode;
}
/**
* Returns formatter's last error message. Always returns the U_ZERO_ERROR_MESSAGE class constant value.
*
* @return string The error message from last formatter call
*
* @see https://php.net/intldateformatter.geterrormessage
*/
public function getErrorMessage()
{
return $this->errorMessage;
}
/**
* Returns the formatter's locale.
*
* @param int $type Not supported. The locale name type to return (Locale::VALID_LOCALE or Locale::ACTUAL_LOCALE)
*
* @return string The locale used to create the formatter. Currently always
* returns "en".
*
* @see https://php.net/intldateformatter.getlocale
*/
public function getLocale(int $type = Locale::ACTUAL_LOCALE)
{
return 'en';
}
/**
* Returns the formatter's pattern.
*
* @return string The pattern string used by the formatter
*
* @see https://php.net/intldateformatter.getpattern
*/
public function getPattern()
{
return $this->pattern;
}
/**
* Returns the formatter's time type.
*
* @return int The time type used by the formatter
*
* @see https://php.net/intldateformatter.gettimetype
*/
public function getTimeType()
{
return $this->timeType;
}
/**
* Returns the formatter's timezone identifier.
*
* @return string The timezone identifier used by the formatter
*
* @see https://php.net/intldateformatter.gettimezoneid
*/
public function getTimeZoneId()
{
if (!$this->uninitializedTimeZoneId) {
return $this->timezoneId;
}
return date_default_timezone_get();
}
/**
* Not supported. Returns the formatter's timezone.
*
* @return mixed The timezone used by the formatter
*
* @see https://php.net/intldateformatter.gettimezone
*
* @throws MethodNotImplementedException
*/
public function getTimeZone()
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Returns whether the formatter is lenient.
*
* @return bool Currently always returns false
*
* @see https://php.net/intldateformatter.islenient
*
* @throws MethodNotImplementedException
*/
public function isLenient()
{
return false;
}
/**
* Not supported. Parse string to a field-based time value.
*
* @return string Localtime compatible array of integers: contains 24 hour clock value in tm_hour field
*
* @see https://php.net/intldateformatter.localtime
*
* @throws MethodNotImplementedException
*/
public function localtime(string $string, &$offset = null)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Parse string to a timestamp value.
*
* @return int|false Parsed value as a timestamp
*
* @see https://php.net/intldateformatter.parse
*
* @throws MethodArgumentNotImplementedException When $offset different than null, behavior not implemented
*/
public function parse(string $string, &$offset = null)
{
// We don't calculate the position when parsing the value
if (null !== $offset) {
throw new MethodArgumentNotImplementedException(__METHOD__, 'offset');
}
$dateTime = $this->createDateTime(0);
$transformer = new FullTransformer($this->getPattern(), $this->getTimeZoneId());
$timestamp = $transformer->parse($dateTime, $string);
// behave like the intl extension. FullTransformer::parse() set the proper error
$this->errorCode = Icu::getErrorCode();
$this->errorMessage = Icu::getErrorMessage();
return $timestamp;
}
/**
* Not supported. Set the formatter's calendar.
*
* @param \IntlCalendar|int|null $calendar
*
* @return bool true on success or false on failure
*
* @see https://php.net/intldateformatter.setcalendar
*
* @throws MethodNotImplementedException
*/
public function setCalendar($calendar)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Set the leniency of the parser.
*
* Define if the parser is strict or lenient in interpreting inputs that do not match the pattern
* exactly. Enabling lenient parsing allows the parser to accept otherwise flawed date or time
* patterns, parsing as much as possible to obtain a value. Extra space, unrecognized tokens, or
* invalid values ("February 30th") are not accepted.
*
* @param bool $lenient Sets whether the parser is lenient or not. Currently
* only false (strict) is supported.
*
* @return bool true on success or false on failure
*
* @see https://php.net/intldateformatter.setlenient
*
* @throws MethodArgumentValueNotImplementedException When $lenient is true
*/
public function setLenient(bool $lenient)
{
if ($lenient) {
throw new MethodArgumentValueNotImplementedException(__METHOD__, 'lenient', $lenient, 'Only the strict parser is supported');
}
return true;
}
/**
* Set the formatter's pattern.
*
* @return bool true on success or false on failure
*
* @see https://php.net/intldateformatter.setpattern
* @see http://userguide.icu-project.org/formatparse/datetime
*/
public function setPattern(string $pattern)
{
$this->pattern = $pattern;
return true;
}
/**
* Sets formatterʼs timezone.
*
* @param \IntlTimeZone|\DateTimeZone|string|null $timezone
*
* @return bool true on success or false on failure
*
* @see https://php.net/intldateformatter.settimezone
*/
public function setTimeZone($timezone)
{
if ($timezone instanceof \IntlTimeZone) {
$timezone = $timezone->getID();
}
if ($timezone instanceof \DateTimeZone) {
$timezone = $timezone->getName();
// DateTimeZone returns the GMT offset timezones without the leading GMT, while our parsing requires it.
if (!empty($timezone) && ('+' === $timezone[0] || '-' === $timezone[0])) {
$timezone = 'GMT'.$timezone;
}
}
if (null === $timezone) {
$timezone = date_default_timezone_get();
$this->uninitializedTimeZoneId = true;
}
// Backup original passed time zone
$timezoneId = $timezone;
// Get an Etc/GMT time zone that is accepted for \DateTimeZone
if ('GMT' !== $timezone && 0 === strpos($timezone, 'GMT')) {
try {
$timezone = DateFormat\TimezoneTransformer::getEtcTimeZoneId($timezone);
} catch (\InvalidArgumentException $e) {
// Does nothing, will fallback to UTC
}
}
try {
$this->dateTimeZone = new \DateTimeZone($timezone);
if ('GMT' !== $timezone && $this->dateTimeZone->getName() !== $timezone) {
$timezoneId = $this->getTimeZoneId();
}
} catch (\Exception $e) {
$timezoneId = $timezone = $this->getTimeZoneId();
$this->dateTimeZone = new \DateTimeZone($timezone);
}
$this->timezoneId = $timezoneId;
return true;
}
/**
* Create and returns a DateTime object with the specified timestamp and with the
* current time zone.
*
* @return \DateTime
*/
protected function createDateTime($timestamp)
{
$dateTime = \DateTime::createFromFormat('U', $timestamp);
$dateTime->setTimezone($this->dateTimeZone);
return $dateTime;
}
/**
* Returns a pattern string based in the datetype and timetype values.
*
* @return string
*/
protected function getDefaultPattern()
{
$pattern = '';
if (self::NONE !== $this->dateType) {
$pattern = $this->defaultDateFormats[$this->dateType];
}
if (self::NONE !== $this->timeType) {
if (\in_array($this->dateType, [self::FULL, self::LONG, self::RELATIVE_FULL, self::RELATIVE_LONG], true)) {
$pattern .= ' \'at\' ';
} elseif (self::NONE !== $this->dateType) {
$pattern .= ', ';
}
$pattern .= $this->defaultTimeFormats[$this->timeType];
}
return $pattern;
}
private function getRelativeDateFormat(int $timestamp): string
{
$today = $this->createDateTime(time());
$today->setTime(0, 0, 0);
$datetime = $this->createDateTime($timestamp);
$datetime->setTime(0, 0, 0);
$interval = $today->diff($datetime);
if (false !== $interval) {
if (0 === $interval->days) {
return 'today';
}
if (1 === $interval->days) {
return 1 === $interval->invert ? 'yesterday' : 'tomorrow';
}
}
return '';
}
}