111 lines
3.7 KiB
PHP
111 lines
3.7 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Translation\Loader;
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use Symfony\Component\Config\Resource\FileResource;
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/**
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* @copyright Copyright (c) 2010, Union of RAD http://union-of-rad.org (http://lithify.me/)
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*/
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class PoFileLoader extends ArrayLoader implements LoaderInterface
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{
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public function load($resource, $locale, $domain = 'messages')
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{
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$messages = $this->parse($resource);
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// empty file
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if (null === $messages) {
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$messages = array();
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}
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// not an array
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if (!is_array($messages)) {
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throw new \InvalidArgumentException(sprintf('The file "%s" must contain a valid po file.', $resource));
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}
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$catalogue = parent::load($messages, $locale, $domain);
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$catalogue->addResource(new FileResource($resource));
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return $catalogue;
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}
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/**
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* Parses portable object (PO) format.
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*
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* This parser sacrifices some features of the reference implementation the
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* differences to that implementation are as follows.
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* - No support for comments spanning multiple lines.
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* - Translator and extracted comments are treated as being the same type.
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* - Message IDs are allowed to have other encodings as just US-ASCII.
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*
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* Items with an empty id are ignored.
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*
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* @param resource $resource
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*
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* @return array
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*/
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private function parse($resource)
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{
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$stream = fopen($resource, 'r');
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$defaults = array(
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'ids' => array(),
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'translated' => null,
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);
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$messages = array();
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$item = $defaults;
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while ($line = fgets($stream)) {
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$line = trim($line);
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if ($line === '') {
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if (is_array($item['translated'])) {
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$messages[$item['ids']['singular']] = stripslashes($item['translated'][0]);
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if (isset($item['ids']['plural'])) {
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$plurals = array();
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foreach ($item['translated'] as $plural => $translated) {
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$plurals[] = sprintf('{%d} %s', $plural, $translated);
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}
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$messages[$item['ids']['plural']] = stripcslashes(implode('|', $plurals));
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}
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} elseif(!empty($item['ids']['singular'])) {
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$messages[$item['ids']['singular']] = stripslashes($item['translated']);
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}
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$item = $defaults;
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} elseif (substr($line, 0, 7) === 'msgid "') {
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$item['ids']['singular'] = substr($line, 7, -1);
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} elseif (substr($line, 0, 8) === 'msgstr "') {
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$item['translated'] = substr($line, 8, -1);
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} elseif ($line[0] === '"') {
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$continues = isset($item['translated']) ? 'translated' : 'ids';
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if (is_array($item[$continues])) {
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end($item[$continues]);
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$item[$continues][key($item[$continues])] .= substr($line, 1, -1);
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} else {
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$item[$continues] .= substr($line, 1, -1);
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}
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} elseif (substr($line, 0, 14) === 'msgid_plural "') {
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$item['ids']['plural'] = substr($line, 14, -1);
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} elseif (substr($line, 0, 7) === 'msgstr[') {
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$size = strpos($line, ']');
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$item['translated'][(integer) substr($line, 7, 1)] = substr($line, $size + 3, -1);
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}
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}
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fclose($stream);
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return array_filter($messages);
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}
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}
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