/**
* normalize vcard source string after parsing
*
* @param string $vcardStr vcard source string
* @return string
*/
public function normalizeSource($vcardStr)
{
ArgValidator::assert($vcardStr, 'string');
/* convert chars outside ASCII range to <U+xxxx> expression */
if (preg_match_all('/[^\\x{0000}-\\x{007F}]/u', $vcardStr, $matches)) {
$conversion = array();
foreach (array_unique($matches[0]) as $char) {
$conversion[$char] = '<U+' . strtoupper(dechex(Utf8::uord($char))) . '>';
}
$vcardStr = strtr($vcardStr, $conversion);
}
/* workaround to enable comma-separated values */
$vcardStr = strtr($vcardStr, array(self::JOINCHAR => ','));
return $vcardStr;
}
/**
* normalize vcard source for parsing
*
* @param string $vcardStr vcard source string
* @return string
*/
public function normalizeSource($vcardStr)
{
ArgValidator::assert($vcardStr, 'string');
if (strpos($vcardStr, 'BEGIN:') !== 0) {
return '';
}
/* convert <U+xxxx> to characters */
if (preg_match_all('/<[uU]\\+([0-9A-Fa-f]{4})>/', $vcardStr, $matches, PREG_SET_ORDER)) {
$conversions = array();
foreach ($matches as $match) {
$conversions[$match[0]] = Utf8::uchr(hexdec($match[1]));
}
$vcardStr = strtr($vcardStr, $conversions);
}
/* strip extra leading spaces */
$vcardStr = preg_replace('/\\n[\\s]+/', "\n ", $vcardStr);
return $vcardStr;
}
