/**
* Parses a .po file and append the translations found in the Translations instance.
*
* {@inheritdoc}
*/
public static function fromString($string, Translations $translations = null, $file = '')
{
if ($translations === null) {
$translations = new Translations();
}
$lines = explode("\n", $string);
$i = 0;
$translation = new Translation('', '');
for ($n = count($lines); $i < $n; ++$i) {
$line = trim($lines[$i]);
$line = self::fixMultiLines($line, $lines, $i);
if ($line === '') {
if ($translation->is('', '')) {
self::parseHeaders($translation->getTranslation(), $translations);
} elseif ($translation->hasOriginal()) {
$translations[] = $translation;
}
$translation = new Translation('', '');
continue;
}
$splitLine = preg_split('/\\s+/', $line, 2);
$key = $splitLine[0];
$data = isset($splitLine[1]) ? $splitLine[1] : '';
switch ($key) {
case '#':
$translation->addComment($data);
$append = null;
break;
case '#.':
$translation->addExtractedComment($data);
$append = null;
break;
case '#,':
foreach (array_map('trim', explode(',', trim($data))) as $value) {
$translation->addFlag($value);
}
$append = null;
break;
case '#:':
foreach (preg_split('/\\s+/', trim($data)) as $value) {
if (preg_match('/^(.+)(:(\\d*))?$/U', $value, $matches)) {
$translation->addReference($matches[1], isset($matches[3]) ? $matches[3] : null);
}
}
$append = null;
break;
case 'msgctxt':
$translation = $translation->getClone(self::convertString($data));
$append = 'Context';
break;
case 'msgid':
$translation = $translation->getClone(null, self::convertString($data));
$append = 'Original';
break;
case 'msgid_plural':
$translation->setPlural(self::convertString($data));
$append = 'Plural';
break;
case 'msgstr':
case 'msgstr[0]':
$translation->setTranslation(self::convertString($data));
$append = 'Translation';
break;
case 'msgstr[1]':
$translation->setPluralTranslation(self::convertString($data), 0);
$append = 'PluralTranslation';
break;
default:
if (strpos($key, 'msgstr[') === 0) {
$translation->setPluralTranslation(self::convertString($data), intval(substr($key, 7, -1)) - 1);
$append = 'PluralTranslation';
break;
}
if (isset($append)) {
if ($append === 'Context') {
$translation = $translation->getClone($translation->getContext() . "\n" . self::convertString($data));
break;
}
if ($append === 'Original') {
$translation = $translation->getClone(null, $translation->getOriginal() . "\n" . self::convertString($data));
break;
}
if ($append === 'PluralTranslation') {
$key = count($translation->getPluralTranslation()) - 1;
$translation->setPluralTranslation($translation->getPluralTranslation($key) . "\n" . self::convertString($data), $key);
break;
}
$getMethod = 'get' . $append;
$setMethod = 'set' . $append;
$translation->{$setMethod}($translation->{$getMethod}() . "\n" . self::convertString($data));
}
break;
}
}
if ($translation->hasOriginal() && !in_array($translation, iterator_to_array($translations))) {
$translations[] = $translation;
}
return $translations;
}