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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Translation\Dumper;
use Symfony\Component\Translation\MessageCatalogue;
/**
* PoFileDumper generates a gettext formatted string representation of a message catalogue.
*
* @author Stealth35
*/
class PoFileDumper extends FileDumper
{
/**
* {@inheritdoc}
*/
public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
{
$output = 'msgid ""'."\n";
$output .= 'msgstr ""'."\n";
$output .= '"Content-Type: text/plain; charset=UTF-8\n"'."\n";
$output .= '"Content-Transfer-Encoding: 8bit\n"'."\n";
$output .= '"Language: '.$messages->getLocale().'\n"'."\n";
$output .= "\n";
$newLine = false;
foreach ($messages->all($domain) as $source => $target) {
if ($newLine) {
$output .= "\n";
} else {
$newLine = true;
}
$metadata = $messages->getMetadata($source, $domain);
if (isset($metadata['comments'])) {
$output .= $this->formatComments($metadata['comments']);
}
if (isset($metadata['flags'])) {
$output .= $this->formatComments(implode(',', (array) $metadata['flags']), ',');
}
if (isset($metadata['sources'])) {
$output .= $this->formatComments(implode(' ', (array) $metadata['sources']), ':');
}
$sourceRules = $this->getStandardRules($source);
$targetRules = $this->getStandardRules($target);
if (2 == \count($sourceRules) && [] !== $targetRules) {
$output .= sprintf('msgid "%s"'."\n", $this->escape($sourceRules[0]));
$output .= sprintf('msgid_plural "%s"'."\n", $this->escape($sourceRules[1]));
foreach ($targetRules as $i => $targetRule) {
$output .= sprintf('msgstr[%d] "%s"'."\n", $i, $this->escape($targetRule));
}
} else {
$output .= sprintf('msgid "%s"'."\n", $this->escape($source));
$output .= sprintf('msgstr "%s"'."\n", $this->escape($target));
}
}
return $output;
}
private function getStandardRules(string $id)
{
// Partly copied from TranslatorTrait::trans.
$parts = [];
if (preg_match('/^\|++$/', $id)) {
$parts = explode('|', $id);
} elseif (preg_match_all('/(?:\|\||[^\|])++/', $id, $matches)) {
$parts = $matches[0];
}
$intervalRegexp = <<<'EOF'
/^(?P<interval>
({\s*
(\-?\d+(\.\d+)?[\s*,\s*\-?\d+(\.\d+)?]*)
\s*})
|
(?P<left_delimiter>[\[\]])
\s*
(?P<left>-Inf|\-?\d+(\.\d+)?)
\s*,\s*
(?P<right>\+?Inf|\-?\d+(\.\d+)?)
\s*
(?P<right_delimiter>[\[\]])
)\s*(?P<message>.*?)$/xs
EOF;
$standardRules = [];
foreach ($parts as $part) {
$part = trim(str_replace('||', '|', $part));
if (preg_match($intervalRegexp, $part)) {
// Explicit rule is not a standard rule.
return [];
} else {
$standardRules[] = $part;
}
}
return $standardRules;
}
/**
* {@inheritdoc}
*/
protected function getExtension()
{
return 'po';
}
private function escape(string $str): string
{
return addcslashes($str, "\0..\37\42\134");
}
private function formatComments($comments, string $prefix = ''): ?string
{
$output = null;
foreach ((array) $comments as $comment) {
$output .= sprintf('#%s %s'."\n", $prefix, $comment);
}
return $output;
}
}