the whole shebang

vendor/symfony/translation/Symfony/Component/Translation/Loader/XliffFileLoader.php

@@ -0,0 +1,163 @@
+<?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\MessageCatalogue;
+use Symfony\Component\Translation\Exception\InvalidResourceException;
+use Symfony\Component\Translation\Exception\NotFoundResourceException;
+use Symfony\Component\Config\Resource\FileResource;
+
+/**
+ * XliffFileLoader loads translations from XLIFF files.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+class XliffFileLoader implements LoaderInterface
+{
+    /**
+     * {@inheritdoc}
+     *
+     * @api
+     */
+    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.', $resource));
+        }
+
+        list($xml, $encoding) = $this->parseFile($resource);
+        $xml->registerXPathNamespace('xliff', 'urn:oasis:names:tc:xliff:document:1.2');
+
+        $catalogue = new MessageCatalogue($locale);
+        foreach ($xml->xpath('//xliff:trans-unit') as $translation) {
+            $attributes = $translation->attributes();
+
+            if (!(isset($attributes['resname']) || isset($translation->source)) || !isset($translation->target)) {
+                continue;
+            }
+
+            $source = isset($attributes['resname']) && $attributes['resname'] ? $attributes['resname'] : $translation->source;
+            $target = (string) $translation->target;
+
+            // If the xlf file has another encoding specified, try to convert it because
+            // simple_xml will always return utf-8 encoded values
+            if ('UTF-8' !== $encoding && !empty($encoding)) {
+                if (function_exists('mb_convert_encoding')) {
+                    $target = mb_convert_encoding($target, $encoding, 'UTF-8');
+                } elseif (function_exists('iconv')) {
+                    $target = iconv('UTF-8', $encoding, $target);
+                } else {
+                    throw new \RuntimeException('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
+                }
+            }
+
+            $catalogue->set((string) $source, $target, $domain);
+        }
+        $catalogue->addResource(new FileResource($resource));
+
+        return $catalogue;
+    }
+
+    /**
+     * Validates and parses the given file into a SimpleXMLElement
+     *
+     * @param string $file
+     *
+     * @throws \RuntimeException
+     *
+     * @return \SimpleXMLElement
+     *
+     * @throws InvalidResourceException
+     */
+    private function parseFile($file)
+    {
+        $internalErrors = libxml_use_internal_errors(true);
+        $disableEntities = libxml_disable_entity_loader(true);
+        libxml_clear_errors();
+
+        $dom = new \DOMDocument();
+        $dom->validateOnParse = true;
+        if (!@$dom->loadXML(file_get_contents($file), LIBXML_NONET | (defined('LIBXML_COMPACT') ? LIBXML_COMPACT : 0))) {
+            libxml_disable_entity_loader($disableEntities);
+
+            throw new InvalidResourceException(implode("\n", $this->getXmlErrors($internalErrors)));
+        }
+
+        libxml_disable_entity_loader($disableEntities);
+
+        foreach ($dom->childNodes as $child) {
+            if ($child->nodeType === XML_DOCUMENT_TYPE_NODE) {
+                libxml_use_internal_errors($internalErrors);
+
+                throw new InvalidResourceException('Document types are not allowed.');
+            }
+        }
+
+        $location = str_replace('\\', '/', __DIR__).'/schema/dic/xliff-core/xml.xsd';
+        $parts = explode('/', $location);
+        if (0 === stripos($location, 'phar://')) {
+            $tmpfile = tempnam(sys_get_temp_dir(), 'sf2');
+            if ($tmpfile) {
+                copy($location, $tmpfile);
+                $parts = explode('/', str_replace('\\', '/', $tmpfile));
+            }
+        }
+        $drive = '\\' === DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
+        $location = 'file:///'.$drive.implode('/', array_map('rawurlencode', $parts));
+
+        $source = file_get_contents(__DIR__.'/schema/dic/xliff-core/xliff-core-1.2-strict.xsd');
+        $source = str_replace('http://www.w3.org/2001/xml.xsd', $location, $source);
+
+        if (!@$dom->schemaValidateSource($source)) {
+            throw new InvalidResourceException(implode("\n", $this->getXmlErrors($internalErrors)));
+        }
+
+        $dom->normalizeDocument();
+
+        libxml_use_internal_errors($internalErrors);
+
+        return array(simplexml_import_dom($dom), strtoupper($dom->encoding));
+    }
+
+    /**
+     * Returns the XML errors of the internal XML parser
+     *
+     * @param Boolean $internalErrors
+     *
+     * @return array An array of errors
+     */
+    private function getXmlErrors($internalErrors)
+    {
+        $errors = array();
+        foreach (libxml_get_errors() as $error) {
+            $errors[] = sprintf('[%s %s] %s (in %s - line %d, column %d)',
+                LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
+                $error->code,
+                trim($error->message),
+                $error->file ? $error->file : 'n/a',
+                $error->line,
+                $error->column
+            );
+        }
+
+        libxml_clear_errors();
+        libxml_use_internal_errors($internalErrors);
+
+        return $errors;
+    }
+}