137 lines
4.6 KiB
PHP
137 lines
4.6 KiB
PHP
<?php
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/*
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+--------------------------------------------------------------------+
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| CiviCRM version 4.7 |
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+--------------------------------------------------------------------+
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| Copyright CiviCRM LLC (c) 2004-2017 |
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+--------------------------------------------------------------------+
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| This file is a part of CiviCRM. |
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| CiviCRM is free software; you can copy, modify, and distribute it |
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| under the terms of the GNU Affero General Public License |
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| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
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| CiviCRM is distributed in the hope that it will be useful, but |
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| WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| See the GNU Affero General Public License for more details. |
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| You should have received a copy of the GNU Affero General Public |
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| License and the CiviCRM Licensing Exception along |
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| with this program; if not, contact CiviCRM LLC |
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| at info[AT]civicrm[DOT]org. If you have questions about the |
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| GNU Affero General Public License or the licensing of CiviCRM, |
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| see the CiviCRM license FAQ at http://civicrm.org/licensing |
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+--------------------------------------------------------------------+
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*/
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/**
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*
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* @package CRM
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* @copyright CiviCRM LLC (c) 2004-2017
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*/
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/**
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* @file
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* API for event export in iCalendar format
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* as outlined in Internet Calendaring and
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* Scheduling Core Object Specification
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*/
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class CRM_Utils_ICalendar {
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/**
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* Escape text elements for safe ICalendar use.
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*
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* @param string $text
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* Text to escape.
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*
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* @return string
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*/
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public static function formatText($text) {
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$text = strip_tags($text);
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$text = str_replace("\\", "\\\\", $text);
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$text = str_replace(',', '\,', $text);
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$text = str_replace(';', '\;', $text);
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$text = str_replace(array("\r\n", "\n", "\r"), "\\n ", $text);
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$text = implode("\n ", str_split($text, 50));
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return $text;
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}
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/**
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* Restore iCal formatted text to normal.
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*
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* @param string $text
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* Text to unescape.
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*
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* @return string
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*/
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public static function unformatText($text) {
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$text = str_replace('\n ', "\n", $text);
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$text = str_replace('\;', ';', $text);
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$text = str_replace('\,', ',', $text);
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$text = str_replace("\\\\", "\\", $text);
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$text = str_replace("DQUOTE", "\"", $text);
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return $text;
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}
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/**
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* Escape date elements for safe ICalendar use.
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*
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* @param $date
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* Date to escape.
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*
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* @param bool $gdata
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*
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* @return string
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* Escaped date
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*/
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public static function formatDate($date, $gdata = FALSE) {
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if ($gdata) {
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return date("Y-m-d\TH:i:s.000",
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strtotime($date)
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);
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}
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else {
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return date("Ymd\THis",
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strtotime($date)
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);
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}
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}
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/**
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* Send the ICalendar to the browser with the specified content type
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* - 'text/calendar' : used for downloaded ics file
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* - 'text/plain' : used for iCal formatted feed
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* - 'text/xml' : used for gData or rss formatted feeds
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*
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*
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* @param string $calendar
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* The calendar data to be published.
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* @param string $content_type
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* @param string $charset
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* The character set to use, defaults to 'us-ascii'.
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* @param string $fileName
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* The file name (for downloads).
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* @param string $disposition
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* How the file should be sent ('attachment' for downloads).
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*/
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public static function send($calendar, $content_type = 'text/calendar', $charset = 'us-ascii', $fileName = NULL, $disposition = NULL) {
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$config = CRM_Core_Config::singleton();
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$lang = $config->lcMessages;
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CRM_Utils_System::setHttpHeader("Content-Language", $lang);
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CRM_Utils_System::setHttpHeader("Content-Type", "$content_type; charset=$charset");
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if ($content_type == 'text/calendar') {
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CRM_Utils_System::setHttpHeader('Content-Length', strlen($calendar));
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CRM_Utils_System::setHttpHeader("Content-Disposition", "$disposition; filename=\"$fileName\"");
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CRM_Utils_System::setHttpHeader("Pragma", "no-cache");
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CRM_Utils_System::setHttpHeader("Expires", "0");
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CRM_Utils_System::setHttpHeader("Cache-Control", "no-cache, must-revalidate");
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}
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echo $calendar;
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}
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}
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