* @package timwolla.wcf.chat
* @subpackage util
*/
class ChatUtil {
/**
* Matches a time-interval with modifiers.
* Each part may be optionally separated by a comma
*
* @see \wcf\util\ChatUtil::timeModifier()
*/
const TIME_MODIFIER_REGEX = '((?:[0-9]+[s|h|d|w|m|y|S|H|D|W|M|Y]?,?)+)';
public static $serialize = array('color' => true);
/**
* 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) {
$string = self::str_split($string);
if (count($string) === 0) return '';
$r = (int) ((($start >> 16 & 255) - ($end >> 16 & 255)) / (count($string) - 1));
$g = (int) ((($start >> 8 & 255) - ($end >> 8 & 255)) / (count($string) - 1));
$b = (int) ((($start & 255) - ($end & 255)) / (count($string) - 1));
$result = '';
for ($i = 0, $max = count($string); $i < $max; $i++) {
$result .= ''.StringUtil::encodeHTML($string[$i]).'';
}
return $result;
}
/**
* Reads user data.
*
* @param string $field
* @return mixed
*/
public static function readUserData($field) {
$ush = UserStorageHandler::getInstance();
$packageID = PackageDependencyHandler::getPackageID('timwolla.wcf.chat');
// load storage
$ush->loadStorage(array(WCF::getUser()->userID), $packageID);
$data = $ush->getStorage(array(WCF::getUser()->userID), $field, $packageID);
if ($data[WCF::getUser()->userID] === null) {
switch ($field) {
case 'color':
$data[WCF::getUser()->userID] = array(1 => 0xFF0000, 2 => 0x00FF00);
break;
}
static::writeUserData(array($field => $data[WCF::getUser()->userID]));
return $data[WCF::getUser()->userID];
}
if (isset(static::$serialize[$field])) return unserialize($data[WCF::getUser()->userID]);
else return $data[WCF::getUser()->userID];
}
/**
* Writes user data
*
* @param array $data
*/
public static function writeUserData(array $data) {
$ush = UserStorageHandler::getInstance();
$packageID = PackageDependencyHandler::getPackageID('timwolla.wcf.chat');
foreach($data as $key => $value) {
$ush->update(WCF::getUser()->userID, $key, (isset(static::$serialize[$key])) ? serialize($value) : $value, $packageID);
}
}
/**
* 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, $max = StringUtil::length($string); $i < $max; $i += $length) {
$result[] = StringUtil::substring($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) {
preg_match_all('!([0-9]+[s|h|d|w|m|y]?)!i', $time, $matches);
$result = 0;
foreach ($matches[1] as $time) {
// 60 seconds a minute
$multiplier = 60;
$modifier = substr($time, -1);
switch ($modifier) {
case 'y':
case 'Y':
// twelve months a year
$multiplier *= 12;
case 'm':
case 'M':
// about 4.3 weeks per month
$multiplier *= 4.34812141;
case 'w':
case 'W':
// seven days a weeks
$multiplier *= 7;
case 'd':
case 'D':
// 24 hours a day
$multiplier *= 24;
case 'h':
case 'H':
// 60 minutes an hour
$multiplier *= 60;
$time = substr($time, 0, -1);
break;
case 's':
case 'S':
// 60 seconds per minute
$multiplier /= 60;
$time = substr($time, 0, -1);
}
$result += $time * $multiplier;
}
return (int) round($result, 0);
}
}