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<?php
/*
* @author Andreas Åkre Solberg <andreas.solberg@uninett.no>
* @package SimpleSAMLphp
*/
class sspmod_statistics_DateHandler {
protected $offset;
/**
* Constructor
*
* @param array $offset Date offset
*/
public function __construct($offset) {
$this->offset = $offset;
}
protected function getDST($timestamp) {
if (idate('I', $timestamp)) return 3600;
return 0;
}
public function toSlot($epoch, $slotsize) {
$dst = $this->getDST($epoch);
return floor( ($epoch + $this->offset + $dst) / $slotsize);
}
public function fromSlot($slot, $slotsize) {
$temp = $slot*$slotsize - $this->offset;
$dst = $this->getDST($temp);
return $slot*$slotsize - $this->offset - $dst;
}
public function prettyDateEpoch($epoch, $dateformat) {
return date($dateformat, $epoch);
}
public function prettyDateSlot($slot, $slotsize, $dateformat) {
return $this->prettyDateEpoch($this->fromSlot($slot, $slotsize), $dateformat);
}
public function prettyHeader($from, $to, $slotsize, $dateformat) {
$text = $this->prettyDateSlot($from, $slotsize, $dateformat);
$text .= ' to ';
$text .= $this->prettyDateSlot($to, $slotsize, $dateformat);
return $text;
}
}
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