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vcalendar.php
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<?php
/*********************************************************************************/
/**
* iCalcreator class v2.4.3
* copyright (c) 2007-2008 Kjell-Inge Gustafsson kigkonsult
* www.kigkonsult.se/iCalcreator/index.php
*
* Description:
* This file is a PHP implementation of RFC 2445.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*********************************************************************************/
/*********************************************************************************/
/* A little setup */
/*********************************************************************************/
/* your local language code */
// define( 'ICAL_LANG', 'sv' );
// alt. autosetting
/*
$langstr = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
$pos = strpos( $langstr, ';' );
if ($pos !== false) {
$langstr = substr( $langstr, 0, $pos );
$pos = strpos( $langstr, ',' );
if ($pos !== false) {
$pos = strpos( $langstr, ',' );
$langstr = substr( $langstr, 0, $pos );
}
define( 'ICAL_LANG', $langstr );
}
*/
/* version string, do NOT remove!! */
define( 'ICALCREATOR_VERSION', 'iCalcreator 2.4.3' );
/*********************************************************************************/
/*********************************************************************************/
/**
* vcalendar class
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.13 - 2007-12-30
*/
class vcalendar {
// calendar property variables
var $calscale;
var $method;
var $prodid;
var $version;
var $xprop;
// container for calendar components
var $components;
// component config variables
var $allowEmpty;
var $unique_id;
var $language;
var $directory;
var $filename;
var $url;
var $delimiter;
var $nl;
var $format;
// component internal variables
var $attributeDelimiter;
var $valueInit;
// component xCal declaration container
var $xcaldecl;
/*
* constructor for calendar object
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.13 - 2007-12-30
* @return void
*/
function vcalendar () {
$this->_makeVersion();
$this->calscale = null;
$this->method = null;
$this->_makeUnique_id();
$this->prodid = null;
$this->xprop = array();
/**
* language = <Text identifying a language, as defined in [RFC 1766]>
*/
if( defined( 'ICAL_LANG' ))
$this->setConfig( 'language', ICAL_LANG );
$this->setConfig( 'allowEmpty', TRUE );
$this->setConfig( 'nl', "\n" );
$this->setConfig( 'format', 'iCal');
$this->directory = null;
$this->filename = null;
$this->url = null;
$this->setConfig( 'delimiter', DIRECTORY_SEPARATOR );
$this->xcaldecl = array();
$this->components = array();
$this->setProperty( 'X-WR-TIMEZONE', date('e') );
}
/*********************************************************************************/
/**
* Property Name: CALSCALE
*/
/**
* creates formatted output for calendar property calscale
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.9.7 - 2006-11-20
* @return string
*/
function createCalscale() {
if( !isset( $this->calscale ))
return;
switch( $this->format ) {
case 'xcal':
return ' calscale="'.$this->calscale.'"'.$this->nl;
break;
default:
return 'CALSCALE:'.$this->calscale.$this->nl;
break;
}
}
/**
* set calendar property calscale
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.3.0 - 2006-08-13
* @param string $value
* @return void
*/
function setCalscale( $value ) {
$this->calscale = $value;
}
/*********************************************************************************/
/**
* Property Name: METHOD
*/
/**
* creates formatted output for calendar property method
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.9.7 - 2006-11-20
* @return string
*/
function createMethod() {
if( !isset( $this->method ))
return;
switch( $this->format ) {
case 'xcal':
return ' method="'.$this->method.'"'.$this->nl;
break;
default:
return 'METHOD:'.$this->method.$this->nl;
break;
}
}
/**
* set calendar property method
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.3.0 - 2006-08-13
* @param string $method
* @return void
*/
function setMethod( $method ) {
$this->method = $method;
}
/*********************************************************************************/
/**
* Property Name: PRODID
*
* The identifier is RECOMMENDED to be the identical syntax to the
* [RFC 822] addr-spec. A good method to assure uniqueness is to put the
* domain name or a domain literal IP address of the host on which.. .
*/
/**
* creates formatted output for calendar property prodid
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.9.7 - 2006-11-20
* @return string
*/
function createProdid() {
if( !isset( $this->prodid ))
$this->_makeProdid();
switch( $this->format ) {
case 'xcal':
return ' prodid="'.$this->prodid.'"'.$this->nl;
break;
default:
return 'PRODID:'.$this->prodid.$this->nl;
break;
}
}
/**
* make default value for calendar prodid
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.3.0 - 2006-08-10
* @return void
*/
function _makeProdid() {
$this->prodid = '-//'.$this->unique_id.'//NONSGML '.ICALCREATOR_VERSION.'//'.strtoupper( $this->language );
}
/**
* 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].
*/
/**
* make default unique_id for calendar prodid
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.3.0 - 2006-08-10
* @return void
*/
function _makeUnique_id() {
$this->unique_id = gethostbyname( $_SERVER['SERVER_NAME'] );
}
/*********************************************************************************/
/**
* Property Name: VERSION
*
* Description: A value of "2.0" corresponds to this memo.
*/
/**
* creates formatted output for calendar property version
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.9.7 - 2006-11-20
* @return string
*/
function createVersion() {
if( !isset( $this->version ))
$this->_makeVersion();
switch( $this->format ) {
case 'xcal':
return ' version="'.$this->version.'"'.$this->nl;
break;
default:
return 'VERSION:'.$this->version.$this->nl;
break;
}
}
/**
* set default calendar version
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.3.0 - 2006-08-10
* @return void
*/
function _makeVersion() {
$this->version = '2.0';
}
/**
* set calendar version
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 0.3.0 - 2006-08-10
* @param string version
* @return void
*/
function setVersion( $version ) {
$this->version = $version;
}
/*********************************************************************************/
/**
* Property Name: x-prop
*/
/**
* creates formatted output for calendar property x-prop, iCal format only
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.3.2 - 2007-11-25
* @return string
*/
function createXprop() {
if( 'xcal' == $this->format )
return false;
if( 0 >= count( $this->xprop ))
return;
$xprop = null;
$toolbox = new calendarComponent();
$toolbox->setConfig( 'language', $this->getConfig( 'language' ));
$toolbox->setConfig( 'nl', $this->getConfig( 'nl' ));
$toolbox->_createFormat( $this->getConfig( 'format' ));
foreach( $this->xprop as $label => $xpropPart ) {
$attributes = $toolbox->_createParams( $xpropPart['params'], array( 'LANGUAGE' ));
if( is_array( $xpropPart['value'] )) {
foreach( $xpropPart['value'] as $pix => $theXpart )
$xpropPart['value'][$pix] = $toolbox->_strrep( $theXpart );
$xpropPart['value'] = implode( ',', $xpropPart['value'] );
}
else
$xpropPart['value'] = $toolbox->_strrep( $xpropPart['value'] );
$xprop .= $toolbox->_createElement( strtoupper( $label ), $attributes, $xpropPart['value'] );
}
return $xprop;
}
/**
* set calendar property x-prop
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.0.7 - 2007-06-21
* @param string $label
* @param string $value
* @param array $params optional
* @return void
*/
function setXprop( $label, $value, $params=FALSE ) {
if( empty( $label ) || empty( $value ))
return;
$xprop = array( 'value' => $value );
$toolbox = new calendarComponent();
$xprop['params'] = $toolbox->_setParams( $params );
$this->xprop[$label] = $xprop;
}
/*********************************************************************************/
/**
* delete calendar property value
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.15 - 2007-10-29
* @param string $propName
* @param int @propix, optional, if specific property is wanted in case of multiply occurences
* @return bool, if successfull delete
*/
function deleteProperty( $propName, $propix=FALSE ) {
$propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
if( !$propix )
$propix = ( isset( $this->propdelix[$propName] )) ? $this->propdelix[$propName] + 2 : 1;
$this->propdelix[$propName] = --$propix;
$return = FALSE;
switch( $propName ) {
case 'CALSCALE':
$this->calscale = null;
$return = TRUE;
break;
case 'METHOD':
$this->method = null;
$return = TRUE;
break;
default:
if( $propName != 'X-PROP' ) {
if( !isset( $this->xprop[$propName] )) return FALSE;
unset( $this->xprop[$propName] );
$return = TRUE;
}
else {
if( count( $this->xprop ) <= $propix ) return FALSE;
$xpropno = 0;
foreach( $this->xprop as $xpropkey => $xpropvalue ) {
if( $propix == $xpropno ) {
unset( $this->xprop[$xpropkey] );
$return = TRUE;
break 2;
}
else
$xpropno++;
}
}
}
return $return;
}
/**
* get calendar property value/params
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.0.8 - 2007-07-07
* @param string $propName, optional
* @param int @propix, optional, if specific property is wanted in case of multiply occurences
* @param bool $inclParam=FALSE
* @return mixed
*/
function getProperty( $propName=FALSE, $propix=FALSE, $inclParam=FALSE ) {
$propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
if( !$propix )
$propix = ( isset( $this->propix[$propName] )) ? $this->propix[$propName] + 2 : 1;
$this->propix[$propName] = --$propix;
switch( $propName ) {
case 'CALSCALE':
if( 0 < $propix ) return FALSE;
return ( !empty( $this->calscale )) ? $this->calscale : null;
break;
case 'METHOD':
if( 0 < $propix ) return FALSE;
return ( !empty( $this->method )) ? $this->method : null;
break;
case 'PRODID':
if( 0 < $propix ) return FALSE;
if( empty( $this->prodid ))
$this->_makeProdid();
return $this->prodid;
break;
case 'VERSION':
if( 0 < $propix ) return FALSE;
return ( !empty( $this->version )) ? $this->version : null;
break;
default:
if( $propName != 'X-PROP' ) {
if( !isset( $this->xprop[$propName] )) return FALSE;
return ( $inclParam ) ? array( $propName, $this->xprop[$propName] )
: array( $propName, $this->xprop[$propName]['value'] );
}
else {
if( count( $this->xprop ) <= $propix ) return FALSE;
$xpropno = 0;
foreach( $this->xprop as $xpropkey => $xpropvalue ) {
if( $propix == $xpropno )
return ( $inclParam ) ? array( $xpropkey, $this->xprop[$xpropkey] )
: array( $xpropkey, $this->xprop[$xpropkey]['value'] );
else
$xpropno++;
}
return FALSE; // not found ??
}
}
return FALSE;
}
/**
* general vcalendar property setting
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.13 - 2007-10-23
* @param mixed $args variable number of function arguments,
* first argument is ALWAYS component name,
* second ALWAYS component value!
* @return void
*/
function setProperty () {
$numargs = func_num_args();
if( 1 >= $numargs )
return FALSE;
$arglist = func_get_args();
if( !$this->getConfig( 'allowEmpty' ) && ( !isset( $arglist[1] ) || empty( $arglist[1] )))
return;
$arglist[0] = strtoupper( $arglist[0] );
for( $argix=$numargs; $argix < 3; $argix++ ) {
if( !isset( $arglist[$argix] ))
$arglist[$argix] = null;
}
switch( $arglist[0] ) {
case 'CALSCALE':
$this->setCalscale( $arglist[1] );
break;
case 'METHOD':
$this->setMethod( $arglist[1] );
break;
case 'VERSION':
$this->setVersion( $arglist[1] );
break;
default:
$this->setXprop( $arglist[0], $arglist[1], $arglist[2] );
break;
}
}
/*********************************************************************************/
/**
* get vcalendar config values or * calendar components
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.13 - 2007-12-30
* @param string $config
* @return value
*/
function getConfig( $config ) {
switch( strtoupper( $config )) {
case 'ALLOWEMPTY':
return $this->allowEmpty;
break;
case 'COMPSINFO':
unset( $this->compix );
$info = array();
foreach( $this->components as $cix => $component ) {
unset( $component->propix );
$info[$cix]['ordno'] = $cix + 1;
$info[$cix]['type'] = $component->objName;
$info[$cix]['uid'] = $component->getProperty( 'uid' );
$info[$cix]['props'] = $component->getConfig( 'propinfo' );
$info[$cix]['sub'] = $component->getConfig( 'compsinfo' );
unset( $component->propix );
}
return $info;
break;
case 'DELIMITER':
return $this->delimiter;
break;
case 'DIRECTORY':
if( empty( $this->directory ))
$this->directory = '.';
return $this->directory;
break;
case 'DIRFILE':
return $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$this->getConfig( 'filename' );
break;
case 'FILEINFO':
return array( $this->getConfig( 'directory' )
, $this->getConfig( 'filename' )
, $this->getConfig( 'filesize' ));
break;
case 'FILENAME':
if( empty( $this->filename )) {
if( 'xcal' == $this->format )
$this->filename = date( 'YmdHis' ).'.xml'; // recommended xcs.. .
else
$this->filename = date( 'YmdHis' ).'.ics';
}
return $this->filename;
break;
case 'FILESIZE':
$size = 0;
if( empty( $this->url )) {
$dirfile = $this->getConfig( 'dirfile' );
if( FALSE === ( $size = filesize( $dirfile )))
$size = 0;
clearstatcache();
}
return $size;
break;
case 'FORMAT':
return $this->format;
break;
case 'LANGUAGE':
/* get language for calendar component as defined in [RFC 1766] */
return $this->language;
break;
case 'NL':
case 'NEWLINECHAR':
return $this->nl;
break;
case 'UNIQUE_ID':
return $this->unique_id;
break;
case 'URL':
if( !empty( $this->url ))
return $this->url;
else
return FALSE;
break;
}
}
/**
* general vcalendar config setting
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.13 - 2007-12-30
* @param string $config
* @param string $value
* @return void
*/
function setConfig( $config, $value ) {
switch( strtoupper( $config )) {
case 'ALLOWEMPTY':
$this->allowEmpty = $value;
break;
case 'DELIMITER':
$this->delimiter = $value;
break;
case 'DIRECTORY':
$value = trim( $value );
$nl = $this->getConfig('delimiter');
if( $nl == substr( $value, ( 0 - strlen( $nl ))))
$value = substr( $value, 0, ( strlen( $value ) - strlen( $nl )));
if( is_dir( $value )) {
/* local directory */
clearstatcache();
$this->directory = $value;
$this->url = null;
return TRUE;
}
else
return FALSE;
break;
case 'FILENAME':
$value = trim( $value );
if( !empty( $this->url )) {
/* remote directory+file - URL */
$this->filename = $value;
return TRUE;
}
$dirfile = $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$value;
if( file_exists( $dirfile )) {
/* local existing file */
if( is_readable( $dirfile ) || is_writable( $dirfile )) {
clearstatcache();
$this->filename = $value;
return TRUE;
}
else
return FALSE;
}
elseif( FALSE !== touch( $dirfile )) {
/* new local file created */
$this->filename = $value;
return TRUE;
}
else
return FALSE;
break;
case 'FORMAT':
$value = trim( $value );
if( 'xcal' == strtolower( $value )) {
$this->format = 'xcal';
$this->attributeDelimiter = $this->nl;
$this->valueInit = null;
}
else {
$this->format = null;
$this->attributeDelimiter = ';';
$this->valueInit = ':';
}
break;
case 'LANGUAGE':
// set language for calendar component as defined in [RFC 1766]
$value = trim( $value );
$this->language = $value;
break;
case 'NL':
case 'NEWLINECHAR':
$this->nl = $value;
break;
case 'UNIQUE_ID':
$value = trim( $value );
$this->unique_id = $value;
break;
case 'URL':
/* remote file - URL */
$value = trim( $value );
$value = str_replace( 'HTTP://', 'http://', $value );
$value = str_replace( 'WEBCAL://', 'http://', $value );
$value = str_replace( 'webcal://', 'http://', $value );
$this->url = $value;
$this->directory = null;
$parts = pathinfo( $value );
return $this->setConfig( 'filename', $parts['basename'] );
break;
}
}
/*********************************************************************************/
/**
* validDate
*
* convert input parameters to (valid) iCalcreator date in array format (or FALSE)
* if $utc=TRUE and $tz = utc offset ([[+/]-]HHmm) input (local) date array + UTC offset
* returns ouput in UTC format date
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.2 - 2007-07-29
* @param mixed $year
* @param mixed $month optional
* @param int $day optional
* @param int $hour optional
* @param int $min optional
* @param int $sec optional
* @param mixed $tz optional
* @param bool $utc optional
* @return bool false / array $date
*/
function validDate( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $utc=FALSE ) {
$input = array();
$toolbox = new calendarComponent();
$parno = null;
if( is_array( $year ) && isset( $year['timestamp'] )) {
$input = $toolbox->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 6 );
$input['tz'] = ( isset( $year['tz'] )) ? $year['tz'] : null;
$utc = ( TRUE === $month ) ? TRUE : FALSE;
}
elseif( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
if( isset( $year['tz'] ) || ( 4 == count( $year )) || ( 7 == count( $year )))
$parno = 7;
elseif( isset( $year['hour'] ) || isset( $year['min'] ) || isset( $year['sec'] ) ||
( 6 == count( $year )))
$parno = 6;
else
$parno = 3;
$input = $toolbox->_date_time_array( $year, $parno );
$utc = ( TRUE === $month ) ? TRUE : FALSE;
}
elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
$input = $toolbox->_date_time_string( $year );
$utc = ( TRUE === $month ) ? TRUE : FALSE;
}
elseif(( $year !== FALSE ) && ( $month !== FALSE ) && ( $day !== FALSE )) {
if(( 0 > (int) $year ) || (2100 < (int) $year ))
return FALSE;
$month = (int) $month;
if(( 1 > $month ) || ( 12 < $month ))
return FALSE;
$day = (int) $day;
if(( 1 > $day ) || ( 31 < $day ))
return FALSE;
$input['year'] = $year;
$input['month'] = $month;
$input['day'] = $day;
if(( $hour !== FALSE ) || ( $min !== FALSE ) || ( $sec !== FALSE )) {
$parno = 6;
if( $hour !== FALSE )
$input['hour'] = $hour;
if( $min !== FALSE )
$input['min'] = $min;
if( $sec !== FALSE )
$input['sec'] = $sec;
}
if( $tz !== FALSE ) {
$parno = 7;
$input['tz'] = $tz;
}
elseif( !$parno )
$parno = 3;
$input = $toolbox->_date_time_array( $input, $parno );
}
else
return FALSE;
if( !checkdate ( $input['month'], $input['day'], $input['year'] ))
return FALSE;
if( isset( $input['hour'] ) &&
(( 0 > $input['hour'] ) || ( 23 < $input['hour'] )))
return FALSE;
if( isset( $input['min'] ) &&
(( 0 > $input['min'] ) || ( 59 < $input['min'] )))
return FALSE;
if( isset( $input['sec'] ) &&
(( 0 > $input['sec'] ) || ( 59 < $input['sec'] )))
return FALSE;
if( isset( $input['tz'] ) && ( '' < trim ( $input['tz'] ))) {
$input['tz'] = (string) trim( $input['tz'] );
if( ctype_digit( $input['tz']{1} )) { // only numeric tz=offset
$offset = 0;
if( ctype_digit( $input['tz']{0} ))
$input['tz'] = '+'.$input['tz'];
$offset = $toolbox->_tz2offset( $input['tz'] );
if( 0 != $offset) {
if( !isset( $input['hour'] ))
$input['hour'] = 0;
if( !isset( $input['min'] ))
$input['min'] = 0;
if( !isset( $input['sec'] ))
$input['sec'] = 0;
$input = date('Y-m-d H:i:s\Z', mktime( $input['hour']
, $input['min']
, $input['sec'] + $offset
, $input['month']
, $input['day']
, $input['year']));
$parno = ( $utc ) ? 7 : 6 ;
$input = $toolbox->_date_time_string( $input, $parno );
if( !$utc && isset( $input['tz'] ) && ( 'Z' == $input['tz'] ))
unset( $input['tz'] );
}
}
}
return $input;
}
/*********************************************************************************/
/**
* add calendar component to container
*
* alias to setComponent
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 1.x.x - 2007-04-24
* @param object $component calendar component
* @return void
*/
function addComponent( $component ) {
$this->setComponent( $component );
}
/**
* delete calendar component from container
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.0.4 - 2007-06-14
* @param mixed $arg1 ordno / component type / component uid
* @param mixed $arg2 optional, ordno if arg1 = component type
* @return void
*/
function deleteComponent( $arg1, $arg2=FALSE ) {
$argType = $index = null;
if ( ctype_digit( (string) $arg1 )) {
$argType = 'INDEX';
$index = (int) $arg1 - 1;
}
elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
$argType = strtolower( $arg1 );
$index = ( !empty( $arg2 ) && ctype_digit( (string) $arg2 )) ? (( int ) $arg2 - 1 ) : 1;
}
$cix1dC = 0;
foreach ( $this->components as $cix => $component) {
unset( $component->propix );
if(( 'INDEX' == $argType ) && ( $index == $cix )) {
unset( $this->components[$cix] );
return TRUE;
}
elseif( $argType == $component->objName ) {
if( $index == $cix1dC ) {
unset( $this->components[$cix] );
return TRUE;
}
$cix1dC++;
}
elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
unset( $this->components[$cix] );
return TRUE;
}
}
return FALSE;
}
/**
* get calendar component from container
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.2.16 - 2007-11-11
* @param mixed $arg1 optional, ordno/component type/ component uid
* @param mixed $arg2 optional, ordno if arg1 = component type
* @return object
*/
function getComponent( $arg1=FALSE, $arg2=FALSE ) {
$index = $argType = null;
if ( !$arg1 ) {
$argType = 'INDEX';
$index = $this->compix['INDEX'] =
( isset( $this->compix['INDEX'] )) ? $this->compix['INDEX'] + 1 : 1;
}
elseif ( ctype_digit( (string) $arg1 )) {
$argType = 'INDEX';
$index = (int) $arg1;
unset( $this->compix );
}
elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
unset( $this->compix['INDEX'] );
$argType = strtolower( $arg1 );
if( !$arg2 )
$index = $this->compix[$argType] =
( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
else
$index = (int) $arg2;
}
$index -= 1;
$ckeys = array_keys( $this->components );
if( !empty( $index) && ( $index > end( $ckeys )))
return FALSE;
$cix1gC = 0;
foreach ( $this->components as $cix => $component) {
unset( $component->propix );
if(( 'INDEX' == $argType ) && ( $index == $cix ))
return $component->copy();
elseif( $argType == $component->objName ) {
if( $index == $cix1gC )
return $component->copy();
$cix1gC++;
}
elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
unset( $component->propix );
return $component->copy();
}
}
/* not found.. . */
unset( $this->compix );
return false;
}
/**
* select components from calendar on date basis
*
* Ensure DTSTART is set for every component.
* No date controls occurs.
*
* @author Kjell-Inge Gustafsson <[email protected]>
* @since 2.4.1 - 2008-02-05
* @param int $startY optional, start Year, default current Year
* @param int $startM optional, start Month, default current Month
* @param int $startD optional, start Day, default current Day
* @param int $endY optional, end Year, default $startY
* @param int $endY optional, end Month, default $startM
* @param int $endY optional, end Day, default $startD
* @param mixed $cType optional, calendar component type(-s), default FALSE=all else string/array type(-s)
* @param bool $flat optional, FALSE (default) => output : array[Year][Month][Day][]
* TRUE => output : array[] (ignores split)
* @param bool $any optional, TRUE (default) - select component that take place within period
* FALSE - only components that starts within period
* @param bool $split optional, TRUE (default) - one component copy every day it take place during the
* period (implies flat=FALSE)
* FALSE - one occurance of component only in output array</tr>
* @return array or FALSE
*/
function selectComponents( $startY=FALSE, $startM=FALSE, $startD=FALSE, $endY=FALSE, $endM=FALSE, $endD=FALSE, $cType=FALSE, $flat=FALSE, $any=TRUE, $split=TRUE ) {
/* check if empty calendar */
if( 0 >= count( $this->components ))
return FALSE;
/* check default dates */
if( !$startY ) $startY = date( 'Y' );
if( !$startM ) $startM = date( 'm' );
if( !$startD ) $startD = date( 'd' );
$startDate = mktime( 0, 0, 0, $startM, $startD, $startY );
if( !$endY ) $endY = $startY;
if( !$endM ) $endM = $startM;
if( !$endD ) $endD = $startD;
$endDate = mktime( 23, 59, 59, $endM, $endD, $endY );
/* check component types */
$validTypes = array('vevent', 'vtodo', 'vjournal', 'vfreebusy' );
if( is_array( $cType )) {
foreach( $cType as $cix => $theType ) {
$cType[$cix] = $theType = strtolower( $theType );
if( !in_array( $theType, $validTypes ))
$cType[$cix] = 'vevent';
}
$cType = array_unique( $cType );
}
elseif( !empty( $cType )) {
$cType = strtolower( $cType );
if( !in_array( $cType, $validTypes ))
$cType = array( 'vevent' );
else
$cType = array( $cType );
}
else
$cType = $validTypes;
if( 0 >= count( $cType ))
$cType = $validTypes;
/* iterate components */
$result = array();
foreach ( $this->components as $cix => $component ) {
unset( $component->propix, $start );
/* deselect unvalid type components */
if( !in_array( $component->objName, $cType ))
continue;
/* deselect components without dtstart set */
if( FALSE === ( $start = $component->getProperty( 'dtstart' )))
continue;
$dtendExist = $dueExist = FALSE;
unset( $end, $startWdate, $endWdate, $rdurWsecs, $rdur, $exdatelist, $workstart, $workend ); // clean up
$startWdate = $component->_date2timestamp( $start );
/* get end date from dtend/due/duration properties */
$end = $component->getProperty( 'dtend' );
if( !empty( $end ))
$dtendExist = TRUE;
//if( !empty($end)) echo 'selectComponents 1 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
if( empty($end) && ( $component->objName == 'vtodo' )) {
$end = $component->getProperty( 'due' );
if( !empty( $end ))
$dueExist = TRUE;
//if( !empty($end)) echo 'selectComponents 2 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
}
elseif( !empty($end) && !isset( $end['hour'] )) {
/* a DTEND without time part regards an event that ends the day before,
for an all-day event DTSTART=20071201 DTEND=20071202 (taking place 20071201!!! */
$end = array( 'year' => $end['year'], 'month' => $end['month'], 'day' => ($end['day'] - 1), 'hour' => 23, 'min' => 59, 'sec' => 59 );
//if( !empty($end)) echo 'selectComponents 3 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
}
if( empty( $end )) {
$end = $component->getProperty( 'duration', FALSE, FALSE, TRUE );// in dtend (array) format
//if( !empty($end)) echo 'selectComponents 4 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
}
if( empty( $end )) { // assume one day duration if missing end date
$end = array( 'year' => $start['year'], 'month' => $start['month'], 'day' => $start['day'], 'hour' => 23, 'min' => 59, 'sec' => 59 );
//if( isset($end)) echo 'selectComponents 5 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
}
$endWdate = $component->_date2timestamp( $end );
if( $endWdate < $startWdate ) { // MUST be after start date!!
$end = array( 'year' => $start['year'], 'month' => $start['month'], 'day' => $start['day'], 'hour' => 23, 'min' => 59, 'sec' => 59 );
$endWdate = $component->_date2timestamp( $end );
}
$rdurWsecs = $endWdate - $startWdate; // compute component duration in seconds
$rdur = $component->_date2duration( $start, $end ); // compute component duration, array
/* make a list of optional exclude dates for component occurence, exrule, exdate */
$exdatelist = array();
$workstart = $component->_date_time_string( date('Y-m-d H:i:s', ( $startDate - $rdurWsecs )), 6);
$workend = $component->_date_time_string( date('Y-m-d H:i:s', ( $endDate + $rdurWsecs )), 6);
while( FALSE !== ( $exrule = $component->getProperty( 'exrule' )))
$component->_recur2date( $exdatelist, $exrule, $start, $workstart, $workend );
while( FALSE !== ( $exdate = $component->getProperty( 'exdate' ))) {
foreach( $exdate as $theExdate ) {
$exWdate = $component->_date2timestamp( $theExdate );
if((( $startDate - $rdurWsecs ) <= $exWdate ) && ( $endDate >= $exWdate ))
$exdatelist[$exWdate] = TRUE;
}
}
/* if 'any' components, check repeating components, removing all excluding dates */
if( TRUE === $any ) {
/* make a list of optional repeating dates for component occurence, rrule, rdate */
$recurlist = array();
while( FALSE !== ( $rrule = $component->getProperty( 'rrule' ))) // check rrule
$component->_recur2date( $recurlist, $rrule, $start, $workstart, $workend );
foreach( $recurlist as $recurkey => $recurvalue ) // key=match date as timestamp
$recurlist[$recurkey] = $rdurWsecs; // add duration in seconds
while( FALSE !== ( $rdate = $component->getProperty( 'rdate' ))) { // check rdate
foreach( $rdate as $theRdate ) {
if( is_array( $theRdate ) && ( 2 == count( $theRdate )) && // PERIOD