forked from GNUsocial/gnu-social
331 lines
9.7 KiB
PHP
331 lines
9.7 KiB
PHP
<?php
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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/**
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* Extracts translation messages from PHP code.
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*
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* @package GNUsocial
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* @category I18n
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*
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* @author Symfony project
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* @author Michel Salib <michelsalib@hotmail.com>
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* @author Fabien Potencier <fabien@symfony.com>
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* @copyright 2011-2019 Symfony project
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* @author Hugo Sales <hugo@fc.up.pt>
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* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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namespace App\Core\I18n;
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use App\Util\Formatting;
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use Symfony\Component\Finder\Finder;
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use Symfony\Component\Translation\Extractor\AbstractFileExtractor;
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use Symfony\Component\Translation\Extractor\ExtractorInterface;
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use Symfony\Component\Translation\Extractor\PhpExtractor;
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use Symfony\Component\Translation\Extractor\PhpStringTokenParser;
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use Symfony\Component\Translation\MessageCatalogue;
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class TransExtractor extends AbstractFileExtractor implements ExtractorInterface
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{
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/**
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* The sequence that captures translation messages.
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*
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* @todo add support for all the cases we use
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*
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* @var array
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*/
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protected $sequences = [
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// [
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// '_m',
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// '(',
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// self::MESSAGE_TOKEN,
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// ',',
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// self::METHOD_ARGUMENTS_TOKEN,
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// ',',
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// self::DOMAIN_TOKEN,
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// ],
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[
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'_m',
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'(',
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self::MESSAGE_TOKEN,
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],
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[
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// Special case: when we have calls to _m with a dynamic
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// value, we need to handle them seperately
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'function',
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'_m_dynamic',
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self::M_DYNAMIC,
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],
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];
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// TODO probably shouldn't be done this way
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// {{{Code from PhpExtractor
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// See vendor/symfony/translation/Extractor/PhpExtractor.php
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//
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const MESSAGE_TOKEN = 300;
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const METHOD_ARGUMENTS_TOKEN = 1000;
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const DOMAIN_TOKEN = 1001;
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const M_DYNAMIC = 1002;
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/**
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* Prefix for new found message.
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*
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* @var string
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*/
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private $prefix = '';
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/**
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* {@inheritdoc}
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*/
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public function extract($resource, MessageCatalogue $catalog)
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{
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if (($dir = strstr($resource, '/Core/GNUsocial.php', true)) === false) {
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return;
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}
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$files = $this->extractFiles($dir);
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foreach ($files as $file) {
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$this->parseTokens(token_get_all(file_get_contents($file)), $catalog, $file);
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gc_mem_caches();
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function setPrefix(string $prefix)
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{
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$this->prefix = $prefix;
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}
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/**
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* Normalizes a token.
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*
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* @param mixed $token
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*
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* @return null|string
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*/
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protected function normalizeToken($token)
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{
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if (isset($token[1]) && 'b"' !== $token) {
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return $token[1];
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}
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return $token;
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}
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/**
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* Seeks to a non-whitespace token.
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*/
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private function seekToNextRelevantToken(\Iterator $tokenIterator)
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{
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for (; $tokenIterator->valid(); $tokenIterator->next()) {
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$t = $tokenIterator->current();
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if (T_WHITESPACE !== $t[0]) {
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break;
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}
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}
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}
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/**
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* {@inheritdoc}
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*/
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private function skipMethodArgument(\Iterator $tokenIterator)
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{
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$openBraces = 0;
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for (; $tokenIterator->valid(); $tokenIterator->next()) {
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$t = $tokenIterator->current();
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if ('[' === $t[0] || '(' === $t[0]) {
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++$openBraces;
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}
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if (']' === $t[0] || ')' === $t[0]) {
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--$openBraces;
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}
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if ((0 === $openBraces && ',' === $t[0]) || (-1 === $openBraces && ')' === $t[0])) {
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break;
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}
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}
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}
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/**
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* @throws \InvalidArgumentException
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*
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* @return bool
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*
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*/
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protected function canBeExtracted(string $file)
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{
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return $this->isFile($file)
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&& 'php' === pathinfo($file, PATHINFO_EXTENSION)
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&& strstr($file, '/src/') !== false;
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}
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/**
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* {@inheritdoc}
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*/
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protected function extractFromDirectory($directory)
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{
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$finder = new Finder();
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return $finder->files()->name('*.php')->in($directory);
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}
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/**
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* Extracts the message from the iterator while the tokens
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* match allowed message tokens.
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*/
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private function getValue(\Iterator $tokenIterator)
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{
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$message = '';
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$docToken = '';
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$docPart = '';
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for (; $tokenIterator->valid(); $tokenIterator->next()) {
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$t = $tokenIterator->current();
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if ('.' === $t) {
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// Concatenate with next token
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continue;
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}
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if (!isset($t[1])) {
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break;
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}
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switch ($t[0]) {
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case T_START_HEREDOC:
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$docToken = $t[1];
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break;
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case T_ENCAPSED_AND_WHITESPACE:
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case T_CONSTANT_ENCAPSED_STRING:
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if ('' === $docToken) {
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$message .= PhpStringTokenParser::parse($t[1]);
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} else {
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$docPart = $t[1];
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}
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break;
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case T_END_HEREDOC:
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$message .= PhpStringTokenParser::parseDocString($docToken, $docPart);
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$docToken = '';
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$docPart = '';
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break;
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case T_WHITESPACE:
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break;
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default:
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break 2;
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}
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}
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return $message;
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}
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// }}}
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/**
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* Extracts trans message from PHP tokens.
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*/
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protected function parseTokens(array $tokens, MessageCatalogue $catalog, string $filename)
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{
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$tokenIterator = new \ArrayIterator($tokens);
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for ($key = 0; $key < $tokenIterator->count(); ++$key) {
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foreach ($this->sequences as $sequence) {
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$message = '';
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$domain = I18n::_mdomain($filename);
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$tokenIterator->seek($key);
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foreach ($sequence as $sequenceKey => $item) {
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$this->seekToNextRelevantToken($tokenIterator);
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if ($this->normalizeToken($tokenIterator->current()) === $item) {
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$tokenIterator->next();
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continue;
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} elseif (self::MESSAGE_TOKEN === $item) {
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$message = $this->getValue($tokenIterator);
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if (\count($sequence) === ($sequenceKey + 1)) {
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break;
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}
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} elseif (self::METHOD_ARGUMENTS_TOKEN === $item) {
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$this->skipMethodArgument($tokenIterator);
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} elseif (self::DOMAIN_TOKEN === $item) {
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$domainToken = $this->getValue($tokenIterator);
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if ('' !== $domainToken) {
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$domain = $domainToken;
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}
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break;
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} elseif (self::M_DYNAMIC === $item) {
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// Special case
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self::storeDynamic($catalog, $filename);
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} else {
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break;
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}
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}
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if ($message) {
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self::store($catalog, $message, $domain, $filename, $tokens[$key][2]); // Line no.
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break;
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}
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}
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}
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}
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/**
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* Store the $message in the message catalogue $mc
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*/
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private function store(MessageCatalogue $mc, string $message,
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string $domain, string $filename, ?int $line_no = null)
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{
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$mc->set($message, $this->prefix . $message, $domain);
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$metadata = $mc->getMetadata($message, $domain) ?? [];
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$metadata['sources'][] = Formatting::normalizePath($filename) . (!empty($line_no) ? ":{$line_no}" : '');
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$mc->setMetadata($message, $metadata, $domain);
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}
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/**
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* Calls `::_m_dynamic` from the class defined in $filename and
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* stores the results in the catalogue. For cases when the
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* translation can't be done in a static (non-PHP) file
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*/
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private function storeDynamic(MessageCatalogue $mc, string $filename)
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{
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require_once $filename;
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$class = preg_replace('/.*\/([A-Za-z]*)\.php/', '\1', $filename);
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$classes = get_declared_classes();
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// Find FQCN of $class
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foreach ($classes as $c) {
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if (strstr($c, $class) !== false) {
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$class = $c;
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break;
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}
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}
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$messages = $class::_m_dynamic();
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$domain = $messages['domain'];
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unset($messages['domain']);
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foreach ($messages as $m) {
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self::store($mc, $m, $domain, $filename);
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}
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}
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}
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