protected function _parsePo($stream)
{
$defaults = array('ids' => array(), 'translated' => null, 'flags' => array(), 'comments' => array(), 'occurrences' => array(), 'context' => null);
$data = array();
$item = $defaults;
while ($line = fgets($stream)) {
$line = trim($line);
if ($line === '') {
$data = $this->_merge($data, $item);
$item = $defaults;
} elseif (substr($line, 0, 3) === '#~ ') {
$item['flags']['obsolete'] = true;
} elseif (substr($line, 0, 3) === '#, ') {
$item['flags'][substr($line, 3)] = true;
} elseif (substr($line, 0, 3) === '#: ') {
$item['occurrences'][] = array('file' => strtok(substr($line, 3), ':'), 'line' => strtok(':'));
} elseif (substr($line, 0, 3) === '#. ') {
$item['comments'][] = substr($line, 3);
} elseif ($line[0] === '#') {
$item['comments'][] = ltrim(substr($line, 1));
} elseif (substr($line, 0, 7) === 'msgid "') {
$item['ids']['singular'] = substr($line, 7, -1);
} elseif (substr($line, 0, 9) === 'msgctxt "') {
$item['context'] = substr($line, 9, -1);
} elseif (substr($line, 0, 8) === 'msgstr "') {
$item['translated'] = substr($line, 8, -1);
} elseif ($line[0] === '"') {
$continues = isset($item['translated']) ? 'translated' : 'ids';
if (is_array($item[$continues])) {
end($item[$continues]);
$item[$continues][key($item[$continues])] .= substr($line, 1, -1);
} else {
$item[$continues] .= substr($line, 1, -1);
}
} elseif (substr($line, 0, 14) === 'msgid_plural "') {
$item['ids']['plural'] = substr($line, 14, -1);
} elseif (substr($line, 0, 7) === 'msgstr[') {
$item['translated'][(int) substr($line, 7, 1)] = substr($line, 11, -1);
}
}
return $this->_merge($data, $item);
}