3 +--------------------------------------------------------------------+
4 | CiviCRM version 4.7 |
5 +--------------------------------------------------------------------+
6 | Copyright CiviCRM LLC (c) 2004-2015 |
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8 | This file is a part of CiviCRM. |
10 | CiviCRM is free software; you can copy, modify, and distribute it |
11 | under the terms of the GNU Affero General Public License |
12 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
14 | CiviCRM is distributed in the hope that it will be useful, but |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
17 | See the GNU Affero General Public License for more details. |
19 | You should have received a copy of the GNU Affero General Public |
20 | License and the CiviCRM Licensing Exception along |
21 | with this program; if not, contact CiviCRM LLC |
22 | at info[AT]civicrm[DOT]org. If you have questions about the |
23 | GNU Affero General Public License or the licensing of CiviCRM, |
24 | see the CiviCRM license FAQ at http://civicrm.org/licensing |
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31 * @copyright CiviCRM LLC (c) 2004-2015
36 * API for event export in iCalendar format
37 * as outlined in Internet Calendaring and
38 * Scheduling Core Object Specification
40 class CRM_Utils_ICalendar
{
43 * Escape text elements for safe ICalendar use.
51 public static function formatText($text) {
52 $text = strip_tags($text);
53 $text = str_replace("\"", "DQUOTE", $text);
54 $text = str_replace("\\", "\\\\", $text);
55 $text = str_replace(",", "\,", $text);
56 $text = str_replace(";", "\;", $text);
57 $text = str_replace(array("\r\n", "\n", "\r"), "\\n ", $text);
58 $text = implode("\n ", str_split($text, 50));
63 * Escape date elements for safe ICalendar use.
73 public static function formatDate($date, $gdata = FALSE) {
76 return date("Y-m-d\TH:i:s.000",
81 return date("Ymd\THis",
88 * Send the ICalendar to the browser with the specified content type
89 * - 'text/calendar' : used for downloaded ics file
90 * - 'text/plain' : used for iCal formatted feed
91 * - 'text/xml' : used for gData or rss formatted feeds
94 * @param string $calendar
95 * The calendar data to be published.
96 * @param string $content_type
97 * @param string $charset
98 * The character set to use, defaults to 'us-ascii'.
99 * @param string $fileName
100 * The file name (for downloads).
101 * @param string $disposition
102 * How the file should be sent ('attachment' for downloads).
104 public static function send($calendar, $content_type = 'text/calendar', $charset = 'us-ascii', $fileName = NULL, $disposition = NULL) {
105 $config = CRM_Core_Config
::singleton();
106 $lang = $config->lcMessages
;
107 CRM_Utils_System
::setHttpHeader("Content-Language", $lang);
108 CRM_Utils_System
::setHttpHeader("Content-Type", "$content_type; charset=$charset");
110 if ($content_type == 'text/calendar') {
111 CRM_Utils_System
::setHttpHeader('Content-Length', strlen($calendar));
112 CRM_Utils_System
::setHttpHeader("Content-Disposition", "$disposition; filename=\"$fileName\"");
113 CRM_Utils_System
::setHttpHeader("Pragma", "no-cache");
114 CRM_Utils_System
::setHttpHeader("Expires", "0");
115 CRM_Utils_System
::setHttpHeader("Cache-Control", "no-cache, must-revalidate");