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<?php
namespace Gettext\Generators;
use Gettext\Translations;
class Po extends Generator implements GeneratorInterface
{
public static $options = [
'noLocation' => false,
];
/**
* {@parentDoc}.
*/
public static function toString(Translations $translations, array $options = [])
{
$options += static::$options;
$pluralForm = $translations->getPluralForms();
$pluralSize = is_array($pluralForm) ? ($pluralForm[0] - 1) : null;
$lines = ['msgid ""', 'msgstr ""'];
foreach ($translations->getHeaders() as $name => $value) {
$lines[] = sprintf('"%s: %s\\n"', $name, $value);
}
$lines[] = '';
//Translations
foreach ($translations as $translation) {
if ($translation->hasComments()) {
foreach ($translation->getComments() as $comment) {
$lines[] = '# '.$comment;
}
}
if ($translation->hasExtractedComments()) {
foreach ($translation->getExtractedComments() as $comment) {
$lines[] = '#. '.$comment;
}
}
if (!$options['noLocation'] && $translation->hasReferences()) {
foreach ($translation->getReferences() as $reference) {
$lines[] = '#: '.$reference[0].(!is_null($reference[1]) ? ':'.$reference[1] : null);
}
}
if ($translation->hasFlags()) {
$lines[] = '#, '.implode(',', $translation->getFlags());
}
if ($translation->hasContext()) {
$lines[] = 'msgctxt '.self::convertString($translation->getContext());
}
self::addLines($lines, 'msgid', $translation->getOriginal());
if ($translation->hasPlural()) {
self::addLines($lines, 'msgid_plural', $translation->getPlural());
self::addLines($lines, 'msgstr[0]', $translation->getTranslation());
foreach ($translation->getPluralTranslations($pluralSize) as $k => $v) {
self::addLines($lines, 'msgstr['.($k + 1).']', $v);
}
} else {
self::addLines($lines, 'msgstr', $translation->getTranslation());
}
$lines[] = '';
}
return implode("\n", $lines);
}
/**
* Escapes and adds double quotes to a string.
*
* @param string $string
*
* @return string
*/
private static function multilineQuote($string)
{
$lines = explode("\n", $string);
$last = count($lines) - 1;
foreach ($lines as $k => $line) {
if ($k === $last) {
$lines[$k] = self::convertString($line);
} else {
$lines[$k] = self::convertString($line."\n");
}
}
return $lines;
}
/**
* Add one or more lines depending whether the string is multiline or not.
*
* @param array &$lines
* @param string $name
* @param string $value
*/
private static function addLines(array &$lines, $name, $value)
{
$newLines = self::multilineQuote($value);
if (count($newLines) === 1) {
$lines[] = $name.' '.$newLines[0];
} else {
$lines[] = $name.' ""';
foreach ($newLines as $line) {
$lines[] = $line;
}
}
}
/**
* Convert a string to its PO representation.
*
* @param string $value
*
* @return string
*/
public static function convertString($value)
{
return '"'.strtr(
$value,
[
"\x00" => '',
'\\' => '\\\\',
"\t" => '\t',
"\n" => '\n',
'"' => '\\"',
]
).'"';
}
}
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