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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
This commit is contained in:
Eric Lippmann 2015-04-10 09:44:38 +02:00
parent 06830e035e
commit f2e5066430
1 changed files with 226 additions and 0 deletions
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library/Icinga/Date/DateFormatter.php Normal file
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<?php
/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Date;
use IntlDateFormatter;
use InvalidArgumentException;
/**
* ICU date formatting
*/
class DateFormatter
{
/**
* Internal constant for relative time diffs
*
* @var int
*/
protected static $relative = 0;
/**
* Format time
*
* @var int
*/
const TIME = 1;
/**
* Format date
*
* @var int
*/
const DATE = 2;
/**
* Format date and time
*
* @var int
*/
const DATETIME = 4;
/**
* Format time diff as time ago
*
* @var int
*/
const AGO = 8;
/**
* Format time diff as time until
*
* @var int
*/
const UNTIL = 16;
/**
* Format time diff as time since
*
* @var int
*/
const SINCE = 32;
/**
* Format used for the DateFormatter
*
* @var int
*/
protected $format;
/**
* Create a date formatter
*
* @param int $format
*/
public function __construct($format)
{
$this->format = $format;
}
/**
* Create a date formatter
*
* @param int $format
*
* @return static
*/
public static function create($format)
{
return new static($format);
}
/**
* Format the diff between two date/time values as a string
*
* @param int|float $time
* @param int|float $now
*
* @return string The formatted string
*/
protected function diff($time, $now = null)
{
$now = $now === null ? time() : (float) $now;
$invert = false;
$diff = $time - $now;
if ($diff < 0) {
$diff = abs($diff);
$invert = true;
}
if ($diff > 3600 * 24 * 3) {
$type = static::DATETIME;
$fmt = new IntlDateFormatter(null, IntlDateFormatter::SHORT, IntlDateFormatter::SHORT);
$formatted = $fmt->format($time);
} else {
$minutes = floor($diff / 60);
if ($minutes < 60) {
$type = static::$relative;
$formatted = sprintf('%dm %ds', $minutes, $diff % 60);
} else {
$hours = floor($minutes / 60);
if ($hours < 24) {
$type = static::TIME;
$fmt = new IntlDateFormatter(null, IntlDateFormatter::NONE, IntlDateFormatter::SHORT);
$formatted = $fmt->format($time);
} else {
$type = static::$relative;
$formatted = sprintf('%dd %dh', floor($hours / 24), $hours % 24);
}
}
}
switch ($this->format) {
case static::AGO:
switch ($type) {
case static::$relative:
$formatted = sprintf(
t('%s ago', 'An event that happened the given time interval ago'),
$formatted
);
break;
case static::TIME:
$formatted = sprintf(t('at %s', 'An event that happened at the given time'), $formatted);
break;
case static::DATETIME:
$formatted = sprintf(
t('on %s', 'An event that happened at the given date and time'),
$formatted
);
break;
}
break;
case static::UNTIL:
switch ($type) {
case static::$relative:
$formatted = sprintf(
t('in %s', 'An event will happen after the given time interval has elapsed'),
$invert ? ('-' . $formatted) : $formatted
);
break;
case static::TIME:
$formatted = sprintf(t('at %s', 'An event will happen at the given time'), $formatted);
break;
case static::DATETIME:
$formatted = sprintf(t('on %s', 'An event will happen on the given date and time'), $formatted);
break;
}
break;
case static::SINCE;
switch ($type) {
case static::$relative:
$formatted = sprintf(
t('for %s', 'A status is lasting for the given time interval'),
$formatted
);
break;
case static::TIME:
// Move to next case
case static::DATETIME:
$formatted = sprintf(
t('since %s', 'A status is lasting since the given date and time'),
$formatted
);
break;
}
break;
default:
break;
}
return $formatted;
}
/**
* Format a date/time value as a string
*
* @param int|float $time Date/time to format
* @param int|float $now
*
* @return string The formatted string
*/
public function format($time, $now = null)
{
$time = (float) $time;
switch ($this->format) {
case static::TIME:
$fmt = new IntlDateFormatter(null, IntlDateFormatter::NONE, IntlDateFormatter::SHORT);
$formatted = $fmt->format($time);
break;
case static::DATE;
$fmt = new IntlDateFormatter(null, IntlDateFormatter::SHORT, IntlDateFormatter::NONE);
$formatted = $fmt->format($time);
break;
case static::DATETIME;
$fmt = new IntlDateFormatter(null, IntlDateFormatter::SHORT, IntlDateFormatter::SHORT);
$formatted = $fmt->format($time);
break;
case static::AGO:
// Move to next case
case static::UNTIL:
// Move to next case
case static::SINCE:
$formatted = $this->diff($time, $now);
break;
default:
throw new InvalidArgumentException('Invalid format');
}
return $formatted;
}
}