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<?php |
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namespace Gettext\Extractors; |
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use Gettext\Translations; |
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use Gettext\Translation; |
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use Gettext\Utils\Strings; |
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/** |
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* Class to get gettext strings from php files returning arrays. |
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*/ |
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class Po extends Extractor implements ExtractorInterface |
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{ |
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/** |
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* Parses a .po file and append the translations found in the Translations instance. |
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* |
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* {@inheritdoc} |
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*/ |
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public static function fromString($string, Translations $translations = null, $file = '') |
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{ |
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if ($translations === null) { |
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$translations = new Translations(); |
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} |
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$lines = explode("\n", $string); |
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$i = 0; |
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$translation = new Translation('', ''); |
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for ($n = count($lines); $i < $n; ++$i) { |
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$line = trim($lines[$i]); |
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$line = self::fixMultiLines($line, $lines, $i); |
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if ($line === '') { |
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if ($translation->is('', '')) { |
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self::parseHeaders($translation->getTranslation(), $translations); |
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} elseif ($translation->hasOriginal()) { |
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$translations[] = $translation; |
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} |
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$translation = new Translation('', ''); |
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continue; |
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} |
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$splitLine = preg_split('/\s+/', $line, 2); |
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$key = $splitLine[0]; |
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$data = isset($splitLine[1]) ? $splitLine[1] : ''; |
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switch ($key) { |
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case '#': |
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$translation->addComment($data); |
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$append = null; |
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break; |
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case '#.': |
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$translation->addExtractedComment($data); |
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$append = null; |
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break; |
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case '#,': |
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foreach (array_map('trim', explode(',', trim($data))) as $value) { |
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$translation->addFlag($value); |
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} |
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$append = null; |
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break; |
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case '#:': |
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foreach (preg_split('/\s+/', trim($data)) as $value) { |
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if (preg_match('/^(.+)(:(\d*))?$/U', $value, $matches)) { |
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$translation->addReference($matches[1], isset($matches[3]) ? $matches[3] : null); |
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} |
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} |
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$append = null; |
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break; |
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case 'msgctxt': |
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$translation = $translation->getClone(Strings::fromPo($data)); |
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$append = 'Context'; |
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break; |
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case 'msgid': |
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$translation = $translation->getClone(null, Strings::fromPo($data)); |
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$append = 'Original'; |
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break; |
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case 'msgid_plural': |
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$translation->setPlural(Strings::fromPo($data)); |
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$append = 'Plural'; |
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break; |
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case 'msgstr': |
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case 'msgstr[0]': |
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$translation->setTranslation(Strings::fromPo($data)); |
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$append = 'Translation'; |
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break; |
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case 'msgstr[1]': |
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$translation->setPluralTranslation(Strings::fromPo($data), 0); |
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$append = 'PluralTranslation'; |
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break; |
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default: |
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if (strpos($key, 'msgstr[') === 0) { |
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$translation->setPluralTranslation(Strings::fromPo($data), intval(substr($key, 7, -1)) - 1); |
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$append = 'PluralTranslation'; |
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break; |
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} |
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if (isset($append)) { |
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if ($append === 'Context') { |
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$translation = $translation->getClone($translation->getContext()."\n".Strings::fromPo($data)); |
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break; |
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} |
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if ($append === 'Original') { |
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$translation = $translation->getClone(null, $translation->getOriginal()."\n".Strings::fromPo($data)); |
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break; |
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} |
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if ($append === 'PluralTranslation') { |
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$key = count($translation->getPluralTranslation()) - 1; |
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$translation->setPluralTranslation($translation->getPluralTranslation($key)."\n".Strings::fromPo($data), $key); |
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break; |
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} |
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$getMethod = 'get'.$append; |
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$setMethod = 'set'.$append; |
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$translation->$setMethod($translation->$getMethod()."\n".Strings::fromPo($data)); |
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} |
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break; |
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} |
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} |
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if ($translation->hasOriginal() && !in_array($translation, iterator_to_array($translations))) { |
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$translations[] = $translation; |
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} |
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return $translations; |
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} |
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/** |
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* Checks if it is a header definition line. Useful for distguishing between header definitions |
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* and possible continuations of a header entry. |
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* |
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* @param string $line Line to parse |
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* |
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* @return bool |
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*/ |
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private static function isHeaderDefinition($line) |
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{ |
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return (bool) preg_match('/^[\w-]+:/', $line); |
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} |
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/** |
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* Parse the po headers. |
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* |
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* @param string $headers |
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* @param Translations $translations |
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*/ |
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private static function parseHeaders($headers, Translations $translations) |
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{ |
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$headers = explode("\n", $headers); |
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$currentHeader = null; |
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foreach ($headers as $line) { |
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$line = Strings::fromPo($line); |
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if (self::isHeaderDefinition($line)) { |
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$header = array_map('trim', explode(':', $line, 2)); |
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$currentHeader = $header[0]; |
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$translations->setHeader($currentHeader, $header[1]); |
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} else { |
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$entry = $translations->getHeader($currentHeader); |
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$translations->setHeader($currentHeader, $entry.$line); |
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} |
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} |
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} |
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/** |
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* Gets one string from multiline strings. |
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* |
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* @param string $line |
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* @param array $lines |
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* @param int &$i |
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* |
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* @return string |
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*/ |
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private static function fixMultiLines($line, array $lines, &$i) |
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{ |
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for ($j = $i, $t = count($lines); $j < $t; ++$j) { |
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if (substr($line, -1, 1) == '"' |
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&& isset($lines[$j + 1]) |
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&& substr(trim($lines[$j + 1]), 0, 1) == '"' |
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) { |
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$line = substr($line, 0, -1).substr(trim($lines[$j + 1]), 1); |
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} else { |
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$i = $j; |
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break; |
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} |
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} |
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return $line; |
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} |
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} |
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oscarotero /
Gettext
