lib: Add DateFormatter for ICU date formatting
The DateFormatter class is supposed to handle locale-dependent date, time, and time diff (ago, since, until) formatting. refs #6778
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Eric Lippmann
parent
06830e035e
commit
f2e5066430
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<?php
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/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
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namespace Icinga\Date;
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use IntlDateFormatter;
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use InvalidArgumentException;
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/**
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* ICU date formatting
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*/
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class DateFormatter
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{
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/**
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* Internal constant for relative time diffs
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*
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* @var int
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*/
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protected static $relative = 0;
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/**
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* Format time
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*
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* @var int
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*/
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const TIME = 1;
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/**
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* Format date
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*
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* @var int
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*/
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const DATE = 2;
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/**
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* Format date and time
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*
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* @var int
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*/
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const DATETIME = 4;
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/**
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* Format time diff as time ago
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*
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* @var int
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*/
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const AGO = 8;
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/**
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* Format time diff as time until
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*
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* @var int
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*/
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const UNTIL = 16;
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/**
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* Format time diff as time since
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*
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* @var int
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*/
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const SINCE = 32;
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/**
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* Format used for the DateFormatter
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*
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* @var int
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*/
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protected $format;
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/**
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* Create a date formatter
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*
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* @param int $format
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*/
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public function __construct($format)
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{
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$this->format = $format;
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}
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/**
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* Create a date formatter
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*
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* @param int $format
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*
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* @return static
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*/
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public static function create($format)
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{
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return new static($format);
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}
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/**
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* Format the diff between two date/time values as a string
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*
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* @param int|float $time
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* @param int|float $now
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*
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* @return string The formatted string
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*/
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protected function diff($time, $now = null)
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{
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$now = $now === null ? time() : (float) $now;
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$invert = false;
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$diff = $time - $now;
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if ($diff < 0) {
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$diff = abs($diff);
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$invert = true;
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}
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if ($diff > 3600 * 24 * 3) {
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$type = static::DATETIME;
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$fmt = new IntlDateFormatter(null, IntlDateFormatter::SHORT, IntlDateFormatter::SHORT);
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$formatted = $fmt->format($time);
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} else {
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$minutes = floor($diff / 60);
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if ($minutes < 60) {
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$type = static::$relative;
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$formatted = sprintf('%dm %ds', $minutes, $diff % 60);
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} else {
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$hours = floor($minutes / 60);
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if ($hours < 24) {
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$type = static::TIME;
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$fmt = new IntlDateFormatter(null, IntlDateFormatter::NONE, IntlDateFormatter::SHORT);
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$formatted = $fmt->format($time);
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} else {
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$type = static::$relative;
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$formatted = sprintf('%dd %dh', floor($hours / 24), $hours % 24);
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}
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}
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}
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switch ($this->format) {
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case static::AGO:
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switch ($type) {
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case static::$relative:
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$formatted = sprintf(
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t('%s ago', 'An event that happened the given time interval ago'),
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$formatted
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);
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break;
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case static::TIME:
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$formatted = sprintf(t('at %s', 'An event that happened at the given time'), $formatted);
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break;
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case static::DATETIME:
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$formatted = sprintf(
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t('on %s', 'An event that happened at the given date and time'),
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$formatted
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);
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break;
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}
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break;
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case static::UNTIL:
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switch ($type) {
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case static::$relative:
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$formatted = sprintf(
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t('in %s', 'An event will happen after the given time interval has elapsed'),
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$invert ? ('-' . $formatted) : $formatted
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);
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break;
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case static::TIME:
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$formatted = sprintf(t('at %s', 'An event will happen at the given time'), $formatted);
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break;
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case static::DATETIME:
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$formatted = sprintf(t('on %s', 'An event will happen on the given date and time'), $formatted);
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break;
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}
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break;
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case static::SINCE;
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switch ($type) {
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case static::$relative:
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$formatted = sprintf(
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t('for %s', 'A status is lasting for the given time interval'),
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$formatted
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);
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break;
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case static::TIME:
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// Move to next case
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case static::DATETIME:
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$formatted = sprintf(
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t('since %s', 'A status is lasting since the given date and time'),
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$formatted
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);
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break;
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}
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break;
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default:
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break;
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}
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return $formatted;
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}
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/**
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* Format a date/time value as a string
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*
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* @param int|float $time Date/time to format
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* @param int|float $now
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*
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* @return string The formatted string
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*/
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public function format($time, $now = null)
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{
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$time = (float) $time;
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switch ($this->format) {
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case static::TIME:
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$fmt = new IntlDateFormatter(null, IntlDateFormatter::NONE, IntlDateFormatter::SHORT);
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$formatted = $fmt->format($time);
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break;
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case static::DATE;
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$fmt = new IntlDateFormatter(null, IntlDateFormatter::SHORT, IntlDateFormatter::NONE);
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$formatted = $fmt->format($time);
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break;
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case static::DATETIME;
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$fmt = new IntlDateFormatter(null, IntlDateFormatter::SHORT, IntlDateFormatter::SHORT);
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$formatted = $fmt->format($time);
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break;
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case static::AGO:
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// Move to next case
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case static::UNTIL:
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// Move to next case
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case static::SINCE:
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$formatted = $this->diff($time, $now);
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break;
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default:
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throw new InvalidArgumentException('Invalid format');
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}
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return $formatted;
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}
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}
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