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-rw-r--r--calendar/lib/SabreDAV/lib/OldSabre/DAV/StringUtil.php91
1 files changed, 91 insertions, 0 deletions
diff --git a/calendar/lib/SabreDAV/lib/OldSabre/DAV/StringUtil.php b/calendar/lib/SabreDAV/lib/OldSabre/DAV/StringUtil.php
new file mode 100644
index 0000000..57e35c4
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+++ b/calendar/lib/SabreDAV/lib/OldSabre/DAV/StringUtil.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace OldSabre\DAV;
+
+/**
+ * String utility
+ *
+ * This class is mainly used to implement the 'text-match' filter, used by both
+ * the CalDAV calendar-query REPORT, and CardDAV addressbook-query REPORT.
+ * Because they both need it, it was decided to put it in OldSabre\DAV instead.
+ *
+ * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class StringUtil {
+
+ /**
+ * Checks if a needle occurs in a haystack ;)
+ *
+ * @param string $haystack
+ * @param string $needle
+ * @param string $collation
+ * @param string $matchType
+ * @return bool
+ */
+ static public function textMatch($haystack, $needle, $collation, $matchType = 'contains') {
+
+ switch($collation) {
+
+ case 'i;ascii-casemap' :
+ // default strtolower takes locale into consideration
+ // we don't want this.
+ $haystack = str_replace(range('a','z'), range('A','Z'), $haystack);
+ $needle = str_replace(range('a','z'), range('A','Z'), $needle);
+ break;
+
+ case 'i;octet' :
+ // Do nothing
+ break;
+
+ case 'i;unicode-casemap' :
+ $haystack = mb_strtoupper($haystack, 'UTF-8');
+ $needle = mb_strtoupper($needle, 'UTF-8');
+ break;
+
+ default :
+ throw new Exception\BadRequest('Collation type: ' . $collation . ' is not supported');
+
+ }
+
+ switch($matchType) {
+
+ case 'contains' :
+ return strpos($haystack, $needle)!==false;
+ case 'equals' :
+ return $haystack === $needle;
+ case 'starts-with' :
+ return strpos($haystack, $needle)===0;
+ case 'ends-with' :
+ return strrpos($haystack, $needle)===strlen($haystack)-strlen($needle);
+ default :
+ throw new Exception\BadRequest('Match-type: ' . $matchType . ' is not supported');
+
+ }
+
+ }
+
+ /**
+ * This method takes an input string, checks if it's not valid UTF-8 and
+ * attempts to convert it to UTF-8 if it's not.
+ *
+ * Note that currently this can only convert ISO-8559-1 to UTF-8 (latin-1),
+ * anything else will likely fail.
+ *
+ * @param string $input
+ * @return string
+ */
+ static public function ensureUTF8($input) {
+
+ $encoding = mb_detect_encoding($input , array('UTF-8','ISO-8859-1'), true);
+
+ if ($encoding === 'ISO-8859-1') {
+ return utf8_encode($input);
+ } else {
+ return $input;
+ }
+
+ }
+
+}

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