Subversion-Projekte lars-tiefland.php_share

<?php

/* vim: set expandtab tabstop=4 shiftwidth=4: */

/**

 * Contains the Calendar_Decorator_Weekday class

 *

 * PHP versions 4 and 5

 *

 * LICENSE: Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * @category  Date and Time

 * @package   Calendar

 * @author    Harry Fuecks <hfuecks@phppatterns.com>

 * @author    Lorenzo Alberton <l.alberton@quipo.it>

 * @copyright 2003-2007 Harry Fuecks, Lorenzo Alberton

 * @license   http://www.debian.org/misc/bsd.license  BSD License (3 Clause)

 * @version   CVS: $Id: Weekday.php 300729 2010-06-24 12:05:53Z quipo $

 * @link      http://pear.php.net/package/Calendar

 */

/**

 * Allows Calendar include path to be redefined

 * @ignore

 */

if (!defined('CALENDAR_ROOT')) {

    define('CALENDAR_ROOT', 'Calendar'.DIRECTORY_SEPARATOR);

}

/**

 * Load Calendar decorator base class

 */

require_once CALENDAR_ROOT.'Decorator.php';

/**

 * Load a Calendar_Day

 */

require_once CALENDAR_ROOT.'Day.php';

/**

 * Decorator for fetching the day of the week

 * <code>

 * $Day = new Calendar_Day(2003, 10, 23);

 * $Weekday = new Calendar_Decorator_Weekday($Day);

 * $Weekday->setFirstDay(0); // Set first day of week to Sunday (default Mon)

 * echo $Weekday->thisWeekDay(); // Displays 5 - fifth day of week relative to Sun

 * </code>

 *

 * @category  Date and Time

 * @package   Calendar

 * @author    Harry Fuecks <hfuecks@phppatterns.com>

 * @author    Lorenzo Alberton <l.alberton@quipo.it>

 * @copyright 2003-2007 Harry Fuecks, Lorenzo Alberton

 * @license   http://www.debian.org/misc/bsd.license  BSD License (3 Clause)

 * @link      http://pear.php.net/package/Calendar

 * @access    public

 */

class Calendar_Decorator_Weekday extends Calendar_Decorator

{

    /**

     * First day of week

     * @var int (default = 1 for Monday)

     * @access private

     */

    var $firstDay = 1;

    /**

     * Constructs Calendar_Decorator_Weekday

     *

     * @param object &$Calendar subclass of Calendar

     *

     * @access public

     */

    function Calendar_Decorator_Weekday(&$Calendar)

    {

        parent::Calendar_Decorator($Calendar);

    }

    /**

     * Sets the first day of the week (0 = Sunday, 1 = Monday (default) etc)

     *

     * @param int $firstDay first day of week

     *

     * @return void

     * @access public

     */

    function setFirstDay($firstDay)

    {

        $this->firstDay = (int)$firstDay;

    }

    /**

     * Returns the previous weekday

     *

     * @param string $format (default = 'int') return value format

     *

     * @return int $format numeric day of week or timestamp

     * @access public

     */

    function prevWeekDay($format = 'int')

    {

        $ts  = $this->calendar->prevDay('timestamp');

        $Day = new Calendar_Day(2000, 1, 1);

        $Day->setTimeStamp($ts);

        $day = $this->calendar->cE->getDayOfWeek(

            $Day->thisYear(),

            $Day->thisMonth(),

            $Day->thisDay()

        );

        $day = $this->adjustWeekScale($day);

        return $this->returnValue('Day', $format, $ts, $day);

    }

    /**

     * Returns the current weekday

     *

     * @param string $format (default = 'int') return value format

     *

     * @return int numeric day of week or timestamp

     * @access public

     */

    function thisWeekDay($format = 'int')

    {

        $ts  = $this->calendar->thisDay('timestamp');

        $day = $this->calendar->cE->getDayOfWeek(

            $this->calendar->year,

            $this->calendar->month,

            $this->calendar->day

        );

        $day = $this->adjustWeekScale($day);

        return $this->returnValue('Day', $format, $ts, $day);

    }

    /**

     * Returns the next weekday

     *

     * @param string $format (default = 'int') return value format

     *

     * @return int numeric day of week or timestamp

     * @access public

     */

    function nextWeekDay($format = 'int')

    {

        $ts  = $this->calendar->nextDay('timestamp');

        $Day = new Calendar_Day(2000, 1, 1);

        $Day->setTimeStamp($ts);

        $day = $this->calendar->cE->getDayOfWeek(

            $Day->thisYear(),

            $Day->thisMonth(),

            $Day->thisDay()

        );

        $day = $this->adjustWeekScale($day);

        return $this->returnValue('Day', $format, $ts, $day);

    }

    /**

     * Adjusts the day of the week relative to the first day of the week

     *

     * @param int $dayOfWeek day of week calendar from Calendar_Engine

     *

     * @return int day of week adjusted to first day

     * @access private

     */

    function adjustWeekScale($dayOfWeek)

    {

        $dayOfWeek = $dayOfWeek - $this->firstDay;

        if ($dayOfWeek >= 0) {

            return $dayOfWeek;

        } else {

            return $this->calendar->cE->getDaysInWeek(

                $this->calendar->year,

                $this->calendar->month,

                $this->calendar->day

            ) + $dayOfWeek;

        }

    }

}

?>