<?php /** * 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 Sabre_DAV instead. * * @package Sabre * @subpackage DAV * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved. * @author Evert Pot (http://www.rooftopsolutions.nl/) * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License */ class Sabre_DAV_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 Sabre_DAV_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 Sabre_DAV_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; } } }