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<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Clearbricks.
# Copyright (c) 2006 Olivier Meunier and contributors. All rights
# reserved.
#
# Clearbricks is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Clearbricks is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Clearbricks; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ***** END LICENSE BLOCK *****
class dt
{
public static function str($p,$ts=null,$tz=null)
{
if ($ts === NULL) { $ts = time(); }
$hash = '799b4e471dc78154865706469d23d512';
$p = preg_replace('/(?<!%)%(a|A)/','{{'.$hash.'__$1%w__}}',$p);
$p = preg_replace('/(?<!%)%(b|B)/','{{'.$hash.'__$1%m__}}',$p);
if ($tz) {
$T = self::getTZ();
self::setTZ($tz);
}
$res = strftime($p,$ts);
if ($tz) {
self::setTZ($T);
}
$res = preg_replace_callback('/{{'.$hash.'__(a|A|b|B)([0-9]{1,2})__}}/',array('self','_callback'),$res);
return $res;
}
public static function dt2str($p,$dt,$tz=null)
{
return dt::str($p,strtotime($dt),$tz);
}
public static function iso8601($ts,$tz='UTC')
{
$o = self::getTimeOffset($tz,$ts);
$o = sprintf('%02u:%02u',$o/3600,($o%3600)/60);
return date('Y-m-d\\TH:i:s',$ts).'+'.$o;
}
public static function rfc822($ts,$tz='UTC')
{
# Get offset
$o = self::getTimeOffset($tz,$ts);
$o = sprintf('%02u%02u',$o/3600,($o%3600)/60);
return strftime('%a, %d %b %Y %H:%M:%S +'.$o,$ts);
}
public static function setTZ($tz)
{
if (function_exists('date_default_timezone_set')) {
date_default_timezone_set($tz);
return;
}
if (!ini_get('safe_mode')) {
putenv('TZ='.$tz);
}
}
public static function getTZ()
{
if (function_exists('date_default_timezone_get')) {
return date_default_timezone_get();
}
return date('T');
}
public static function getTimeOffset($utc_tz,$ts=false)
{
if (!$ts) {
$ts = time();
}
$server_tz = self::getTZ();
$server_offset = date('Z',$ts);
self::setTZ($utc_tz);
$cur_offset = date('Z',$ts);
self::setTZ($server_tz);
return $cur_offset-$server_offset;
}
public static function toUTC($ts)
{
return $ts + self::getTimeOffset('UTC',$ts);
}
public static function addTimeZone($tz,$ts=false)
{
if (!$ts) {
$ts = time();
}
return $ts + self::getTimeOffset($tz,$ts);
}
public static function getZones($flip=false,$groups=false)
{
try {
$tz = file(dirname(__FILE__).'/tz.dat');
} catch (Exception $e) {
return array();
}
$res = array();
foreach ($tz as $v)
{
$v = trim($v);
if ($v) {
$res[$v] = str_replace('_',' ',$v);
}
}
if ($flip) {
$res = array_flip($res);
if ($groups) {
$tmp = array();
foreach ($res as $k => $v) {
$g = explode('/',$k);
$tmp[$g[0]][$k] = $v;
}
$res = $tmp;
}
}
return $res;
}
private static function _callback($args)
{
$b = array(1=>'_Jan',2=>'_Feb',3=>'_Mar',4=>'_Apr',5=>'_May',6=>'_Jun',
7=>'_Jul',8=>'_Aug',9=>'_Sep',10=>'_Oct',11=>'_Nov',12=>'_Dec');
$B = array(1=>'January',2=>'February',3=>'March',4=>'April',
5=>'May',6=>'June',7=>'July',8=>'August',9=>'September',
10=>'October',11=>'November',12=>'December');
$a = array(1=>'_Mon',2=>'_Tue',3=>'_Wed',4=>'_Thu',5=>'_Fri',
6=>'_Sat',0=>'_Sun');
$A = array(1=>'Monday',2=>'Tuesday',3=>'Wednesday',4=>'Thursday',
5=>'Friday',6=>'Saturday',0=>'Sunday');
return __(${$args[1]}[(integer) $args[2]]);
}
}
?>