/**
* test if an object exists
*
* @param string $identifier Identifier
*
* @access public
* @return boolean
*/
function is_object($identifier)
{
return Array_key_exists($identifier, $this->gedcom_objects['MediaRecs']);
}
/**
* Loops through string to look for matches in the mapping table and replaces the
* characters that has a mapping. This will convert the given string to Unicode/UTF-8.
*
* @param String $string String to convert to Unicode (ÙTF-8)
* @return String
*/
public function convert($string)
{
$i = 0;
// Initialize counter in loop
$output = '';
// String to output
// Go through string, fetch next character, next two characters and next three characters
// to check against mapping table if mapping exist.
while ($i <= Strlen($string) - 1) {
$remains = Strlen($string) - $i;
// Characters that remains in string
$key = array();
// Initialize array
// Get next, next two and next three characters (if number of remaing
// characters allow it)
if ($remains >= 3) {
$key[3] = $this->get_key_map($string, $i, 3);
}
if ($remains >= 2) {
$key[2] = $this->get_key_map($string, $i, 2);
}
if ($remains >= 1) {
$key[1] = $this->get_key_map($string, $i, 1);
}
// Check if next three characters exist in mapping, and replace them if they do
if (count($key) == 3 && Array_key_exists($key[3], $this->_mapping[3])) {
$output .= Chr(Hexdec($this->_mapping[3][$key[3]]));
$i += 3;
// We mapped three bytes into one char, jump three forward for next loop
} elseif (count($key) >= 2 && Array_key_exists($key[2], $this->_mapping[2])) {
$output .= Chr(Hexdec($this->_mapping[2][$key[2]]));
$i += 2;
} elseif (count($key) >= 1 && Array_key_exists($key[1], $this->_mapping[1])) {
$output .= Chr(Hexdec($this->_mapping[1][$key[1]]));
$i++;
} else {
$output .= Chr(Hexdec($key[1]));
$i++;
}
}
return Utf8_encode($output);
// Return the string with replacements
}
