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<?php
namespace SMW\DataValues\Time;
use Language;
use SMW\Localizer;
use SMWDITime as DITime;
/**
* @license GNU GPL v2+
* @since 2.4
*
* @author mwjames
*/
class IntlTimeFormatter {
const LOCL_DEFAULT = 0;
const LOCL_TIMEZONE = 0x2;
const LOCL_TIMEOFFSET = 0x4;
/**
* @var DITime
*/
private $dataItem;
/**
* @var Language
*/
private $language;
/**
* @var boolean
*/
private $hasLocalTimeCorrection = false;
/**
* @since 2.4
*
* @param DITime $dataItem
* @param Language|null $language
*/
public function __construct( DITime $dataItem, Language $language = null ) {
$this->dataItem = $dataItem;
$this->language = $language;
if ( $this->language === null ) {
$this->language = Localizer::getInstance()->getContentLanguage();
}
}
/**
* @since 3.0
*
* @return boolean
*/
public function hasLocalTimeCorrection() {
return $this->hasLocalTimeCorrection;
}
/**
* @since 2.4
*
* @param integer $formatFlag
*
* @return string|boolean
*/
public function getLocalizedFormat( $formatFlag = self::LOCL_DEFAULT ) {
$dateTime = $this->dataItem->asDateTime();
$timezone = '';
$this->hasLocalTimeCorrection = false;
if ( !$dateTime ) {
return false;
}
$localizer = Localizer::getInstance();
if ( ( self::LOCL_TIMEOFFSET & $formatFlag ) != 0 ) {
$dateTime = $localizer->getLocalTime( $dateTime );
$this->hasLocalTimeCorrection = isset( $dateTime->hasLocalTimeCorrection ) ? $dateTime->hasLocalTimeCorrection : false;
}
if ( ( self::LOCL_TIMEZONE & $formatFlag ) != 0 ) {
$timezone = $this->dataItem->getTimezone();
$dateTime = Timezone::getModifiedTime( $dateTime, $timezone );
}
$lang = $localizer->getLang(
$this->language
);
$precision = $this->dataItem->getPrecision();
// Look for the Z precision which indicates the position of the TZ
if ( $precision === SMW_PREC_YMDT && $timezone !== '' ) {
$precision = SMW_PREC_YMDTZ;
}
$preferredDateFormatByPrecision = $lang->getPreferredDateFormatByPrecision(
$precision
);
// Mark the position since we cannot use DateTime::setTimezone in case
// it is a military zone
$preferredDateFormatByPrecision = str_replace( 'T', '**', $preferredDateFormatByPrecision );
$dateString = $this->formatWithLocalizedTextReplacement(
$dateTime,
$preferredDateFormatByPrecision
);
return str_replace( '**', $timezone, $dateString );
}
/**
* Permitted formatting options are specified by http://php.net/manual/en/function.date.php
*
* @since 2.4
*
* @param string $format
*
* @return string|boolean
*/
public function format( $format ) {
$dateTime = $this->dataItem->asDateTime();
if ( !$dateTime ) {
return false;
}
$output = $this->formatWithLocalizedTextReplacement(
$dateTime,
$format
);
return $output;
}
/**
* @since 2.4
*
* @param string $format
*
* @return boolean
*/
public function containsValidDateFormatRule( $format ) {
foreach ( str_split( $format ) as $value ) {
if ( in_array( $value, [ 'd', 'D', 'j', 'l', 'N', 'w', 'W', 'F', 'M', 'm', 'n', 't', 'L', 'o', 'Y', 'y', "c", 'r' ] ) ) {
return true;
}
}
return false;
}
/**
* DateTime generally outputs English textual representation
*
* - D A textual representation of a day, three letters
* - l (lowercase 'L'), A full textual representation of the day of the week
* - F A full textual representation of a month, such as January or March
* - M A short textual representation of a month, three letters
* - a Lowercase Ante meridiem and Post meridiem am or pm
* - A Uppercase Ante meridiem and Post meridiem
*/
private function formatWithLocalizedTextReplacement( $dateTime, $format ) {
$output = $dateTime->format( $format );
// (n) DateTime => 1 through 12
$monthNumber = $dateTime->format( 'n' );
// (N) DateTime => 1 (for Monday) through 7 (for Sunday)
// (w) DateTime => 0 (for Sunday) through 6 (for Saturday)
// MW => 1 (for Sunday) through 7 (for Saturday)
$dayNumber = $dateTime->format( 'w' ) + 1;
if ( strpos( $format, 'F' ) !== false ) {
$output = str_replace(
$dateTime->format( 'F' ),
$this->language->getMonthName( $monthNumber ),
$output
);
}
if ( strpos( $format, 'M' ) !== false ) {
$output = str_replace(
$dateTime->format( 'M' ),
$this->language->getMonthAbbreviation( $monthNumber ),
$output
);
}
if ( strpos( $format, 'l' ) !== false ) {
$output = str_replace(
$dateTime->format( 'l' ),
$this->language->getWeekdayName( $dayNumber ),
$output
);
}
if ( strpos( $format, 'D' ) !== false ) {
$output = str_replace(
$dateTime->format( 'D' ),
$this->language->getWeekdayAbbreviation( $dayNumber ),
$output
);
}
return $output;
}
}
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