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-rw-r--r--calendar/lib/SabreDAV/vendor/oldsabre/vobject/lib/Sabre/VObject/StringUtil.php61
1 files changed, 61 insertions, 0 deletions
diff --git a/calendar/lib/SabreDAV/vendor/oldsabre/vobject/lib/Sabre/VObject/StringUtil.php b/calendar/lib/SabreDAV/vendor/oldsabre/vobject/lib/Sabre/VObject/StringUtil.php
new file mode 100644
index 0000000..1218792
--- /dev/null
+++ b/calendar/lib/SabreDAV/vendor/oldsabre/vobject/lib/Sabre/VObject/StringUtil.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace OldSabre\VObject;
+
+/**
+ * Useful utilities for working with various strings.
+ *
+ * @copyright Copyright (C) 2007-2013 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class StringUtil {
+
+ /**
+ * Returns true or false depending on if a string is valid UTF-8
+ *
+ * @param string $str
+ * @return bool
+ */
+ static function isUTF8($str) {
+
+ // First check.. mb_check_encoding
+ if (!mb_check_encoding($str, 'UTF-8')) {
+ return false;
+ }
+
+ // Control characters
+ if (preg_match('%(?:[\x00-\x08\x0B-\x0C\x0E\x0F])%', $str)) {
+ return false;
+ }
+
+ return true;
+
+ }
+
+ /**
+ * This method tries its best to convert the input string to UTF-8.
+ *
+ * Currently only ISO-5991-1 input and UTF-8 input is supported, but this
+ * may be expanded upon if we receive other examples.
+ *
+ * @param string $str
+ * @return string
+ */
+ static function convertToUTF8($str) {
+
+ $encoding = mb_detect_encoding($str , array('UTF-8','ISO-8859-1'), true);
+
+ if ($encoding === 'ISO-8859-1') {
+ $newStr = utf8_encode($str);
+ } else {
+ $newStr = $str;
+ }
+
+ // Removing any control characters
+ return (preg_replace('%(?:[\x00-\x08\x0B-\x0C\x0E\x0F])%', '', $newStr));
+
+ }
+
+}
+

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