* @package be.bastelstu.chat
* @subpackage util
*/
final class ChatUtil {
/**
* Matches a time-interval with modifiers.
* Each part may be optionally separated by a comma
*
* @see \chat\util\ChatUtil::timeModifier()
*/
const TIME_MODIFIER_REGEX = '((?:[0-9]+[s|h|d|w|m|y|S|H|D|W|M|Y]?,?)+)';
/**
* Package identifier of Tims Chat.
*
* @var string
*/
const PACKAGE_IDENTIFIER = 'be.bastelstu.chat';
/**
* Cached packageID of Tims Chat.
*
* @var integer
*/
private static $packageID = null;
/**
* Returns the packageID of Tims Chat.
*/
public static function getPackageID() {
if (self::$packageID === null) {
self::$packageID = PackageCache::getInstance()->getPackageID(self::PACKAGE_IDENTIFIER);
}
return self::$packageID;
}
/**
* Creates a gradient out of two colors represented by an integer.
* The first byte is red, the second byte is green, the third one is blue.
* The numbers can be easily expressed in hexadecimal notation: 0xFF0000 being red.
*
* @param string $string
* @param integer $start
* @param integer $end
* @return string
*/
public static function gradient($string, $start, $end) {
if (($length = \wcf\util\StringUtil::length($string)) === 0) return '';
if ($start === $end) {
return ''.\wcf\util\StringUtil::encodeHTML($string).'';
}
$r = (int) ((($start >> 16 & 255) - ($end >> 16 & 255)) / ($length - 1));
$g = (int) ((($start >> 8 & 255) - ($end >> 8 & 255)) / ($length - 1));
$b = (int) ((($start & 255) - ($end & 255)) / ($length - 1));
$result = '';
$string = self::str_split($string);
for ($i = 0; $i < $length; $i++) {
$result .= ''.\wcf\util\StringUtil::encodeHTML($string[$i]).'';
}
return $result;
}
/**
* Splits a string into smaller chunks.
* UTF-8 safe version of str_split().
*
* @param string $string
* @param integer $length
* @return array
*/
public static function str_split($string, $length = 1) {
$result = array();
for ($i = 0, $max = \wcf\util\StringUtil::length($string); $i < $max; $i += $length) {
$result[] = \wcf\util\StringUtil::substring($string, $i, $length);
}
return $result;
}
/**
* Creates an interval out of a string with modifiers.
* Modifiers may be mixed. Valid modifiers are: _s_econd, _h_our, _d_ay, _w_week, _m_onth, _y_ear
* '2' -> 2 minutes
* '2h' -> 2 hours
* '1y12m2w3d12h' -> 1 year, 12 months, 2 weeks, 3 days, 12 hours
*
* @param string $time
* @return integer
*/
public static function timeModifier($time) {
$regex = new \wcf\system\Regex('([0-9]+)([shdwmy]?)', \wcf\system\Regex::CASE_INSENSITIVE);
if (!$regex->match($time, true, \wcf\system\Regex::ORDER_MATCH_BY_SET)) return 0;
$matches = $regex->getMatches();
$result = '';
foreach ($matches as $match) {
list(, $time, $modifier) = $match;
switch ($modifier) {
case 'y':
case 'Y':
$result .= '+'.$time.'year';
break;
case 'm':
case 'M':
$result .= '+'.$time.'month';
break;
case 'w':
case 'W':
$result .= '+'.$time.'week';
break;
case 'd':
case 'D':
$result .= '+'.$time.'day';
break;
case 'h':
case 'H':
$result .= '+'.$time.'hour';
break;
case 's':
case 'S':
$result .= '+'.$time.'second';
break;
default:
$result .= '+'.$time.'minute';
}
}
return $result;
}
/**
* Disables the constructor.
*/
private function __construct() { }
}