xcal.lib.php

<?php
/* Copyright (C) 2008 Laurent Destailleur  <eldy@users.sourceforge.net>
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */


/**
 *  \file       htdocs/lib/xcal.lib.php
 *  \brief      Function to manage calendar files (vcal/ical/...)
 *  \version    $Id$
 */

/**
 *	\brief		Build a file from an array of events
 *	\param		format				'vcal' or 'ical'
 *	\param		title				Title of export
 *	\param		desc				Description of export
 *	\param		events_array		Array of events ('eid','startdate','duration','enddate','title','summary','category','email','url','desc','author')
 *	\param		outputfile			Output file
 *	\param		filter				Filter
 *	\return		int					<0 if ko, Nb of events in file if ok
 *	\remarks	All input params and data must be encoded in $conf->charset_output
 */
function build_calfile($format='vcal',$title,$desc,$events_array,$outputfile,$filter='')
{
	global $conf,$langs;

	dol_syslog("xcal.lib.php::build_calfile Build cal file ".$outputfile." to format ".$format);

	if (empty($outputfile)) return -1;

	// Note: A cal file is an UTF8 encoded file
	$calfileh=fopen($outputfile,'w');
	if ($calfileh)
	{
		$now=mktime();

		$encoding='';
		if ($format == 'vcal') $encoding='ENCODING=QUOTED-PRINTABLE:';

		// Print header
		fwrite($calfileh,"BEGIN:VCALENDAR\n");
		fwrite($calfileh,"VERSION:2.0\n");
		fwrite($calfileh,"METHOD:PUBLISH\n");
		//fwrite($calfileh,"PRODID:-//DOLIBARR ".DOL_VERSION."//EN\n");
		fwrite($calfileh,"PRODID:-//DOLIBARR ".DOL_VERSION."\n");
		fwrite($calfileh,"CALSCALE:GREGORIAN\n");
		fwrite($calfileh,"X-WR-CALNAME:".$encoding.format_cal($format,$title)."\n");
		fwrite($calfileh,"X-WR-CALDESC:".$encoding.format_cal($format,$desc)."\n");
		//fwrite($calfileh,"X-WR-TIMEZONE:Europe/Paris\n");

		foreach ($events_array as $date => $event)
		{
			$eventqualified=true;
			if ($filter)
			{
				// \TODO Add a filter