/**
* Takes a string in the format of a po file and returns a Stringset
* @param string $str
* @return Stringset
*/
public static function fromString($str)
{
$stringset = new Stringset();
$entry = array();
$state = null;
$line = 1;
foreach (explode("\n", $str) as $line) {
$line = trim($line);
if (strlen($line) === 0) {
if (count($entry) > 0) {
$stringset->add($entry);
$entry = array();
$state = null;
}
continue;
}
if ($line[0] === '#' && $line[1] === ',') {
$entry['flags'] = array_map('trim', explode(',', substr($line, 2)));
} else {
if ($line[0] !== '#') {
// non-comment
list($key, $rest) = explode(' ', $line, 2);
switch ($key) {
case 'msgid':
case 'msgid_plural':
case 'msgstr':
case 'msgctxt':
if (strpos($state, 'msgstr') === 0 && $key !== 'msgstr' && count($entry) > 0) {
$stringset->add($entry);
$entry = array();
}
$state = $key;
$entry[$key] = self::parseString($rest);
break;
default:
if (strpos($key, 'msgstr[') === 0) {
$state = $key;
$entry[$key] = self::parseString($rest);
} else {
$entry[$state] .= self::parseString(trim($line));
}
}
}
}
$line += 1;
}
return $stringset;
}
/**
* Read a string in MO format and create a Stringset from it.
* @param string $str
* @return Stringset
*/
public static function fromString($str)
{
$set = new Stringset();
$data = str_split($str, 1);
$pos = 0;
list(, $magic) = unpack('L', self::mergechars($data, $pos, 4));
if ($magic !== self::MAGIC_NUMBER) {
throw new Exception("This is not a MO string.");
}
list(, $version) = unpack('L', self::mergechars($data, $pos, 4));
if ($version !== self::REVISION) {
throw new Exception("This file format revision is not supported.");
}
list(, $nstrings) = unpack('L', self::mergechars($data, $pos, 4));
list(, $ostart) = unpack('L', self::mergechars($data, $pos, 4));
list(, $tstart) = unpack('L', self::mergechars($data, $pos, 4));
for ($i = 0; $i < $nstrings; $i += 1) {
$original = $ostart + $i * 8;
$translated = $tstart + $i * 8;
$original = unpack('Llength/Loffset', self::mergechars($data, $original, 8));
$translated = unpack('Llength/Loffset', self::mergechars($data, $translated, 8));
$id = self::mergechars($data, $original['offset'], $original['length'] + 1, false);
$value = self::mergechars($data, $translated['offset'], $translated['length'] + 1, false);
if ($id[strlen($id) - 1] !== self::NUL || $value[strlen($value) - 1] !== self::NUL) {
throw new Exception("String wasn't NUL-terminated");
}
$result = array();
$id = explode(self::NUL, $id);
if (count($id) === 3) {
$result['msgid_plural'] = $id[1];
}
$id = explode(self::EOT, $id[0]);
if (count($id) === 2) {
$result['msgctxt'] = $id[0];
$result['msgid'] = $id[1];
} else {
$result['msgid'] = $id[0];
}
$value = explode(self::NUL, $value);
array_pop($value);
$result['msgstr'] = $value;
$set->add($result);
}
return $set;
}
