/**
* Load translations from a given file.
*
* @param string $domain the domain to load the data into
* @param string $file the file name
* @return boolean TRUE if data was successfully loaded, FALSE otherwise
*/
private static function load_file($domain, $file)
{
if (!file_exists($file)) {
Error::raise(sprintf(_t('No translations found for locale %s, domain %s!'), self::$locale, $domain));
return FALSE;
}
if (filesize($file) < 24) {
Error::raise(sprintf(_t('Invalid .MO file for locale %s, domain %s!'), self::$locale, $domain));
return FALSE;
}
$fp = fopen($file, 'rb');
$data = fread($fp, filesize($file));
fclose($fp);
// determine endianness
$little_endian = TRUE;
list(, $magic) = unpack('V1', substr($data, 0, 4));
switch ($magic & 0xffffffff) {
case (int) 0x950412de:
$little_endian = TRUE;
break;
case (int) 0xde120495:
$little_endian = FALSE;
break;
default:
Error::raise(sprintf(_t('Invalid magic number 0x%08x in %s!'), $magic, $file));
return FALSE;
}
$revision = substr($data, 4, 4);
if ($revision != 0) {
Error::raise(sprintf(_t('Unknown revision number %d in %s!'), $revision, $file));
return FALSE;
}
$l = $little_endian ? 'V' : 'N';
if ($data && strlen($data) >= 20) {
$header = substr($data, 8, 12);
$header = unpack("{$l}1msgcount/{$l}1msgblock/{$l}1transblock", $header);
if ($header['msgblock'] + ($header['msgcount'] - 1) * 8 > filesize($file)) {
Error::raise(sprintf(_t('Message count (%d) out of bounds in %s!'), $header['msgcount'], $file));
return FALSE;
}
$lo = "{$l}1length/{$l}1offset";
for ($msgindex = 0; $msgindex < $header['msgcount']; $msgindex++) {
$msginfo = unpack($lo, substr($data, $header['msgblock'] + $msgindex * 8, 8));
$msgids = explode("", substr($data, $msginfo['offset'], $msginfo['length']));
$transinfo = unpack($lo, substr($data, $header['transblock'] + $msgindex * 8, 8));
$transids = explode("", substr($data, $transinfo['offset'], $transinfo['length']));
self::$messages[$domain][$msgids[0]] = array($msgids, $transids);
}
}
// setup plural functionality
self::$plural_function = self::get_plural_function(self::$messages[$domain][''][1][0]);
// only use locale if we actually read something
return count(self::$messages) > 0;
}
