| <?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\Loader; |
| |
| /** |
| * @copyright Copyright (c) 2010, Union of RAD https://github.com/UnionOfRAD/lithium |
| * @copyright Copyright (c) 2012, Clemens Tolboom |
| */ |
| class PoFileLoader extends FileLoader |
| { |
| /** |
| * Parses portable object (PO) format. |
| * |
| * From https://www.gnu.org/software/gettext/manual/gettext.html#PO-Files |
| * we should be able to parse files having: |
| * |
| * white-space |
| * # translator-comments |
| * #. extracted-comments |
| * #: reference... |
| * #, flag... |
| * #| msgid previous-untranslated-string |
| * msgid untranslated-string |
| * msgstr translated-string |
| * |
| * extra or different lines are: |
| * |
| * #| msgctxt previous-context |
| * #| msgid previous-untranslated-string |
| * msgctxt context |
| * |
| * #| msgid previous-untranslated-string-singular |
| * #| msgid_plural previous-untranslated-string-plural |
| * msgid untranslated-string-singular |
| * msgid_plural untranslated-string-plural |
| * msgstr[0] translated-string-case-0 |
| * ... |
| * msgstr[N] translated-string-case-n |
| * |
| * The definition states: |
| * - white-space and comments are optional. |
| * - msgid "" that an empty singleline defines a header. |
| * |
| * This parser sacrifices some features of the reference implementation the |
| * differences to that implementation are as follows. |
| * - No support for comments spanning multiple lines. |
| * - Translator and extracted comments are treated as being the same type. |
| * - Message IDs are allowed to have other encodings as just US-ASCII. |
| * |
| * Items with an empty id are ignored. |
| * |
| * {@inheritdoc} |
| */ |
| protected function loadResource(string $resource) |
| { |
| $stream = fopen($resource, 'r'); |
| |
| $defaults = [ |
| 'ids' => [], |
| 'translated' => null, |
| ]; |
| |
| $messages = []; |
| $item = $defaults; |
| $flags = []; |
| |
| while ($line = fgets($stream)) { |
| $line = trim($line); |
| |
| if ('' === $line) { |
| // Whitespace indicated current item is done |
| if (!\in_array('fuzzy', $flags)) { |
| $this->addMessage($messages, $item); |
| } |
| $item = $defaults; |
| $flags = []; |
| } elseif ('#,' === substr($line, 0, 2)) { |
| $flags = array_map('trim', explode(',', substr($line, 2))); |
| } elseif ('msgid "' === substr($line, 0, 7)) { |
| // We start a new msg so save previous |
| // TODO: this fails when comments or contexts are added |
| $this->addMessage($messages, $item); |
| $item = $defaults; |
| $item['ids']['singular'] = substr($line, 7, -1); |
| } elseif ('msgstr "' === substr($line, 0, 8)) { |
| $item['translated'] = substr($line, 8, -1); |
| } elseif ('"' === $line[0]) { |
| $continues = isset($item['translated']) ? 'translated' : 'ids'; |
| |
| if (\is_array($item[$continues])) { |
| end($item[$continues]); |
| $item[$continues][key($item[$continues])] .= substr($line, 1, -1); |
| } else { |
| $item[$continues] .= substr($line, 1, -1); |
| } |
| } elseif ('msgid_plural "' === substr($line, 0, 14)) { |
| $item['ids']['plural'] = substr($line, 14, -1); |
| } elseif ('msgstr[' === substr($line, 0, 7)) { |
| $size = strpos($line, ']'); |
| $item['translated'][(int) substr($line, 7, 1)] = substr($line, $size + 3, -1); |
| } |
| } |
| // save last item |
| if (!\in_array('fuzzy', $flags)) { |
| $this->addMessage($messages, $item); |
| } |
| fclose($stream); |
| |
| return $messages; |
| } |
| |
| /** |
| * Save a translation item to the messages. |
| * |
| * A .po file could contain by error missing plural indexes. We need to |
| * fix these before saving them. |
| */ |
| private function addMessage(array &$messages, array $item) |
| { |
| if (!empty($item['ids']['singular'])) { |
| $id = stripcslashes($item['ids']['singular']); |
| if (isset($item['ids']['plural'])) { |
| $id .= '|'.stripcslashes($item['ids']['plural']); |
| } |
| |
| $translated = (array) $item['translated']; |
| // PO are by definition indexed so sort by index. |
| ksort($translated); |
| // Make sure every index is filled. |
| end($translated); |
| $count = key($translated); |
| // Fill missing spots with '-'. |
| $empties = array_fill(0, $count + 1, '-'); |
| $translated += $empties; |
| ksort($translated); |
| |
| $messages[$id] = stripcslashes(implode('|', $translated)); |
| } |
| } |
| } |