Added vendor/ directory for Composer's installed files
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vendor/symfony/translation/Loader/PoFileLoader.php
vendored
Executable file
180
vendor/symfony/translation/Loader/PoFileLoader.php
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<?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\Translation\Exception\InvalidResourceException;
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use Symfony\Component\Translation\Exception\NotFoundResourceException;
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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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* @copyright Copyright (c) 2012, Clemens Tolboom
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*/
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class PoFileLoader extends ArrayLoader
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{
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public function load($resource, $locale, $domain = 'messages')
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{
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if (!stream_is_local($resource)) {
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throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource));
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}
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if (!file_exists($resource)) {
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throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource));
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}
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$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 InvalidResourceException(sprintf('The file "%s" must contain a valid po file.', $resource));
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}
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$catalogue = parent::load($messages, $locale, $domain);
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if (class_exists('Symfony\Component\Config\Resource\FileResource')) {
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$catalogue->addResource(new FileResource($resource));
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}
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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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* From http://www.gnu.org/software/gettext/manual/gettext.html#PO-Files
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* we should be able to parse files having:
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*
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* white-space
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* # translator-comments
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* #. extracted-comments
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* #: reference...
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* #, flag...
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* #| msgid previous-untranslated-string
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* msgid untranslated-string
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* msgstr translated-string
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*
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* extra or different lines are:
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*
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* #| msgctxt previous-context
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* #| msgid previous-untranslated-string
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* msgctxt context
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*
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* #| msgid previous-untranslated-string-singular
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* #| msgid_plural previous-untranslated-string-plural
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* msgid untranslated-string-singular
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* msgid_plural untranslated-string-plural
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* msgstr[0] translated-string-case-0
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* ...
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* msgstr[N] translated-string-case-n
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*
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* The definition states:
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* - white-space and comments are optional.
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* - msgid "" that an empty singleline defines a header.
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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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// Whitespace indicated current item is done
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$this->addMessage($messages, $item);
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$item = $defaults;
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} elseif (substr($line, 0, 7) === 'msgid "') {
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// We start a new msg so save previous
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// TODO: this fails when comments or contexts are added
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$this->addMessage($messages, $item);
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$item = $defaults;
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$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'][(int) substr($line, 7, 1)] = substr($line, $size + 3, -1);
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}
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}
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// save last item
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$this->addMessage($messages, $item);
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fclose($stream);
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return $messages;
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}
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/**
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* Save a translation item to the messages.
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*
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* A .po file could contain by error missing plural indexes. We need to
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* fix these before saving them.
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*
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* @param array $messages
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* @param array $item
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*/
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private function addMessage(array &$messages, array $item)
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{
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if (is_array($item['translated'])) {
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$messages[stripcslashes($item['ids']['singular'])] = stripcslashes($item['translated'][0]);
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if (isset($item['ids']['plural'])) {
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$plurals = $item['translated'];
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// PO are by definition indexed so sort by index.
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ksort($plurals);
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// Make sure every index is filled.
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end($plurals);
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$count = key($plurals);
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// Fill missing spots with '-'.
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$empties = array_fill(0, $count + 1, '-');
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$plurals += $empties;
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ksort($plurals);
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$messages[stripcslashes($item['ids']['plural'])] = stripcslashes(implode('|', $plurals));
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}
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} elseif (!empty($item['ids']['singular'])) {
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$messages[stripcslashes($item['ids']['singular'])] = stripcslashes($item['translated']);
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}
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}
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}
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