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Sampanna Rimal
191
vendor/symfony/translation/Util/XliffUtils.php
vendored
Normal file
191
vendor/symfony/translation/Util/XliffUtils.php
vendored
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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\Util;
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use Symfony\Component\Translation\Exception\InvalidArgumentException;
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use Symfony\Component\Translation\Exception\InvalidResourceException;
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/**
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* Provides some utility methods for XLIFF translation files, such as validating
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* their contents according to the XSD schema.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class XliffUtils
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{
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/**
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* Gets xliff file version based on the root "version" attribute.
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*
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* Defaults to 1.2 for backwards compatibility.
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*
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* @throws InvalidArgumentException
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*/
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public static function getVersionNumber(\DOMDocument $dom): string
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{
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/** @var \DOMNode $xliff */
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foreach ($dom->getElementsByTagName('xliff') as $xliff) {
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$version = $xliff->attributes->getNamedItem('version');
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if ($version) {
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return $version->nodeValue;
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}
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$namespace = $xliff->attributes->getNamedItem('xmlns');
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if ($namespace) {
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if (0 !== substr_compare('urn:oasis:names:tc:xliff:document:', $namespace->nodeValue, 0, 34)) {
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throw new InvalidArgumentException(sprintf('Not a valid XLIFF namespace "%s".', $namespace));
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}
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return substr($namespace, 34);
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}
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}
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// Falls back to v1.2
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return '1.2';
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}
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/**
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* Validates and parses the given file into a DOMDocument.
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*
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* @throws InvalidResourceException
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*/
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public static function validateSchema(\DOMDocument $dom): array
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{
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$xliffVersion = static::getVersionNumber($dom);
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$internalErrors = libxml_use_internal_errors(true);
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if ($shouldEnable = self::shouldEnableEntityLoader()) {
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$disableEntities = libxml_disable_entity_loader(false);
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}
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try {
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$isValid = @$dom->schemaValidateSource(self::getSchema($xliffVersion));
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if (!$isValid) {
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return self::getXmlErrors($internalErrors);
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}
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} finally {
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if ($shouldEnable) {
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libxml_disable_entity_loader($disableEntities);
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}
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}
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$dom->normalizeDocument();
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libxml_clear_errors();
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libxml_use_internal_errors($internalErrors);
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return [];
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}
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private static function shouldEnableEntityLoader(): bool
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{
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static $dom, $schema;
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if (null === $dom) {
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$dom = new \DOMDocument();
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$dom->loadXML('<?xml version="1.0"?><test/>');
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$tmpfile = tempnam(sys_get_temp_dir(), 'symfony');
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register_shutdown_function(static function () use ($tmpfile) {
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@unlink($tmpfile);
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});
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$schema = '<?xml version="1.0" encoding="utf-8"?>
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<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
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<xsd:include schemaLocation="file:///'.str_replace('\\', '/', $tmpfile).'" />
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</xsd:schema>';
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file_put_contents($tmpfile, '<?xml version="1.0" encoding="utf-8"?>
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<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
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<xsd:element name="test" type="testType" />
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<xsd:complexType name="testType"/>
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</xsd:schema>');
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}
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return !@$dom->schemaValidateSource($schema);
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}
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public static function getErrorsAsString(array $xmlErrors): string
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{
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$errorsAsString = '';
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foreach ($xmlErrors as $error) {
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$errorsAsString .= sprintf("[%s %s] %s (in %s - line %d, column %d)\n",
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\LIBXML_ERR_WARNING === $error['level'] ? 'WARNING' : 'ERROR',
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$error['code'],
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$error['message'],
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$error['file'],
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$error['line'],
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$error['column']
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);
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}
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return $errorsAsString;
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}
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private static function getSchema(string $xliffVersion): string
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{
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if ('1.2' === $xliffVersion) {
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$schemaSource = file_get_contents(__DIR__.'/../Resources/schemas/xliff-core-1.2-transitional.xsd');
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$xmlUri = 'http://www.w3.org/2001/xml.xsd';
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} elseif ('2.0' === $xliffVersion) {
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$schemaSource = file_get_contents(__DIR__.'/../Resources/schemas/xliff-core-2.0.xsd');
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$xmlUri = 'informativeCopiesOf3rdPartySchemas/w3c/xml.xsd';
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} else {
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throw new InvalidArgumentException(sprintf('No support implemented for loading XLIFF version "%s".', $xliffVersion));
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}
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return self::fixXmlLocation($schemaSource, $xmlUri);
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}
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/**
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* Internally changes the URI of a dependent xsd to be loaded locally.
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*/
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private static function fixXmlLocation(string $schemaSource, string $xmlUri): string
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{
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$newPath = str_replace('\\', '/', __DIR__).'/../Resources/schemas/xml.xsd';
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$parts = explode('/', $newPath);
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$locationstart = 'file:///';
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if (0 === stripos($newPath, 'phar://')) {
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$tmpfile = tempnam(sys_get_temp_dir(), 'symfony');
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if ($tmpfile) {
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copy($newPath, $tmpfile);
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$parts = explode('/', str_replace('\\', '/', $tmpfile));
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} else {
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array_shift($parts);
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$locationstart = 'phar:///';
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}
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}
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$drive = '\\' === \DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
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$newPath = $locationstart.$drive.implode('/', array_map('rawurlencode', $parts));
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return str_replace($xmlUri, $newPath, $schemaSource);
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}
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/**
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* Returns the XML errors of the internal XML parser.
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*/
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private static function getXmlErrors(bool $internalErrors): array
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{
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$errors = [];
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foreach (libxml_get_errors() as $error) {
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$errors[] = [
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'level' => \LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
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'code' => $error->code,
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'message' => trim($error->message),
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'file' => $error->file ?: 'n/a',
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'line' => $error->line,
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'column' => $error->column,
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];
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}
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libxml_clear_errors();
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libxml_use_internal_errors($internalErrors);
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return $errors;
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}
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}
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