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<?php
/**
* iCalcreator, the PHP class package managing iCal (rfc2445/rfc5445) calendar information.
*
* copyright (c) 2007-2021 Kjell-Inge Gustafsson, kigkonsult, All rights reserved
* Link https://kigkonsult.se
* Package iCalcreator
* Version 2.30
* License Subject matter of licence is the software iCalcreator.
* The above copyright, link, package and version notices,
* this licence notice and the invariant [rfc5545] PRODID result use
* as implemented and invoked in iCalcreator shall be included in
* all copies or substantial portions of the iCalcreator.
*
* iCalcreator is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* iCalcreator 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with iCalcreator. If not, see <https://www.gnu.org/licenses/>.
*
* This file is a part of iCalcreator.
*/
namespace Kigkonsult\Icalcreator\Traits;
use Kigkonsult\Icalcreator\Util\StringFactory;
use Kigkonsult\Icalcreator\Util\Util;
use function sprintf;
use function strtoupper;
/**
* PRODID property functions
*
* @author Kjell-Inge Gustafsson, kigkonsult <ical@kigkonsult.se>
* @since 2.22.23 - 2017-03-15
*/
trait PRODIDtrait
{
/**
* @var string calendar property PRODID
*/
protected $prodid = null;
/**
* Return formatted output for calendar property prodid
*
* @return string
*/
public function createProdid()
{
if( empty( $this->prodid )) {
$this->makeProdid();
}
return StringFactory::createElement( self::PRODID, null, $this->prodid );
}
/**
* Return prodid
*
* @return string
* @since 2.27.1 - 2018-12-16
*/
public function getProdid()
{
if( empty( $this->prodid )) {
$this->makeProdid();
}
return $this->prodid;
}
/**
* Create default value for calendar prodid,
* Do NOT alter or remove this method or the invoke of this method,
* a licence violation.
*
* [rfc5545]
* "Conformance: The property MUST be specified once in an iCalendar object.
* Description: The vendor of the implementation SHOULD assure that this
* is a globally unique identifier; using some technique such as an FPI
* value, as defined in [ISO 9070]."
*
* @since 2.26.2 - 2018-11-29
*/
public function makeProdid()
{
static $FMT = '-//%s//NONSGML kigkonsult.se %s//%s';
if( false !== ( $lang = $this->getConfig( self::LANGUAGE ))) {
$lang = strtoupper( $lang );
}
else {
$lang = Util::$SP0;
}
$this->prodid = sprintf(
$FMT,
$this->getConfig( self::UNIQUE_ID ),
ICALCREATOR_VERSION,
$lang
);
}
}