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ArrayLoader.php
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CsvFileLoader.php
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LoaderInterface.php
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Editing: PoFileLoader.php
<?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; use Symfony\Component\Translation\Exception\InvalidResourceException; use Symfony\Component\Translation\Exception\NotFoundResourceException; use Symfony\Component\Config\Resource\FileResource; /** * @copyright Copyright (c) 2010, Union of RAD http://union-of-rad.org (http://lithify.me/) * @copyright Copyright (c) 2012, Clemens Tolboom */ class PoFileLoader extends ArrayLoader implements LoaderInterface { public function load($resource, $locale, $domain = 'messages') { if (!stream_is_local($resource)) { throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource)); } if (!file_exists($resource)) { throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource)); } $messages = $this->parse($resource); // empty file if (null === $messages) { $messages = array(); } // not an array if (!is_array($messages)) { throw new InvalidResourceException(sprintf('The file "%s" must contain a valid po file.', $resource)); } $catalogue = parent::load($messages, $locale, $domain); $catalogue->addResource(new FileResource($resource)); return $catalogue; } /** * Parses portable object (PO) format. * * From http://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. * * @param resource $resource * * @return array */ private function parse($resource) { $stream = fopen($resource, 'r'); $defaults = array( 'ids' => array(), 'translated' => null, ); $messages = array(); $item = $defaults; while ($line = fgets($stream)) { $line = trim($line); if ($line === '') { // Whitespace indicated current item is done $this->addMessage($messages, $item); $item = $defaults; } elseif (substr($line, 0, 7) === 'msgid "') { // 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 (substr($line, 0, 8) === 'msgstr "') { $item['translated'] = substr($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($line, 1, -1); } } elseif (substr($line, 0, 14) === 'msgid_plural "') { $item['ids']['plural'] = substr($line, 14, -1); } elseif (substr($line, 0, 7) === 'msgstr[') { $size = strpos($line, ']'); $item['translated'][(integer) substr($line, 7, 1)] = substr($line, $size + 3, -1); } } // save last item $this->addMessage($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. * * @param array $messages * @param array $item */ private function addMessage(array &$messages, array $item) { if (is_array($item['translated'])) { $messages[$item['ids']['singular']] = stripslashes($item['translated'][0]); if (isset($item['ids']['plural'])) { $plurals = $item['translated']; // PO are by definition indexed so sort by index. ksort($plurals); // Make sure every index is filled. end($plurals); $count = key($plurals); // Fill missing spots with '-'. $empties = array_fill(0, $count+1, '-'); $plurals += $empties; ksort($plurals); $messages[$item['ids']['plural']] = stripcslashes(implode('|', $plurals)); } } elseif (!empty($item['ids']['singular'])) { $messages[$item['ids']['singular']] = stripslashes($item['translated']); } } }
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