diff vendor/symfony/translation/Extractor/PhpExtractor.php @ 14:1fec387a4317

Update Drupal core to 8.5.2 via Composer

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/translation/Extractor/PhpExtractor.php	Mon Apr 23 09:46:53 2018 +0100
@@ -0,0 +1,258 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation\Extractor;
+
+use Symfony\Component\Finder\Finder;
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * PhpExtractor extracts translation messages from a PHP template.
+ *
+ * @author Michel Salib <[e-mail]>
+ */
+class PhpExtractor extends AbstractFileExtractor implements ExtractorInterface
+{
+    const MESSAGE_TOKEN = 300;
+    const METHOD_ARGUMENTS_TOKEN = 1000;
+    const DOMAIN_TOKEN = 1001;
+
+    /**
+     * Prefix for new found message.
+     *
+     * @var string
+     */
+    private $prefix = '';
+
+    /**
+     * The sequence that captures translation messages.
+     *
+     * @var array
+     */
+    protected $sequences = array(
+        array(
+            '->',
+            'trans',
+            '(',
+            self::MESSAGE_TOKEN,
+            ',',
+            self::METHOD_ARGUMENTS_TOKEN,
+            ',',
+            self::DOMAIN_TOKEN,
+        ),
+        array(
+            '->',
+            'transChoice',
+            '(',
+            self::MESSAGE_TOKEN,
+            ',',
+            self::METHOD_ARGUMENTS_TOKEN,
+            ',',
+            self::METHOD_ARGUMENTS_TOKEN,
+            ',',
+            self::DOMAIN_TOKEN,
+        ),
+        array(
+            '->',
+            'trans',
+            '(',
+            self::MESSAGE_TOKEN,
+        ),
+        array(
+            '->',
+            'transChoice',
+            '(',
+            self::MESSAGE_TOKEN,
+        ),
+    );
+
+    /**
+     * {@inheritdoc}
+     */
+    public function extract($resource, MessageCatalogue $catalog)
+    {
+        $files = $this->extractFiles($resource);
+        foreach ($files as $file) {
+            $this->parseTokens(token_get_all(file_get_contents($file)), $catalog);
+
+            if (\PHP_VERSION_ID >= 70000) {
+                // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
+                gc_mem_caches();
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setPrefix($prefix)
+    {
+        $this->prefix = $prefix;
+    }
+
+    /**
+     * Normalizes a token.
+     *
+     * @param mixed $token
+     *
+     * @return string
+     */
+    protected function normalizeToken($token)
+    {
+        if (isset($token[1]) && 'b"' !== $token) {
+            return $token[1];
+        }
+
+        return $token;
+    }
+
+    /**
+     * Seeks to a non-whitespace token.
+     */
+    private function seekToNextRelevantToken(\Iterator $tokenIterator)
+    {
+        for (; $tokenIterator->valid(); $tokenIterator->next()) {
+            $t = $tokenIterator->current();
+            if (T_WHITESPACE !== $t[0]) {
+                break;
+            }
+        }
+    }
+
+    private function skipMethodArgument(\Iterator $tokenIterator)
+    {
+        $openBraces = 0;
+
+        for (; $tokenIterator->valid(); $tokenIterator->next()) {
+            $t = $tokenIterator->current();
+
+            if ('[' === $t[0] || '(' === $t[0]) {
+                ++$openBraces;
+            }
+
+            if (']' === $t[0] || ')' === $t[0]) {
+                --$openBraces;
+            }
+
+            if ((0 === $openBraces && ',' === $t[0]) || (-1 === $openBraces && ')' === $t[0])) {
+                break;
+            }
+        }
+    }
+
+    /**
+     * Extracts the message from the iterator while the tokens
+     * match allowed message tokens.
+     */
+    private function getValue(\Iterator $tokenIterator)
+    {
+        $message = '';
+        $docToken = '';
+
+        for (; $tokenIterator->valid(); $tokenIterator->next()) {
+            $t = $tokenIterator->current();
+            if (!isset($t[1])) {
+                break;
+            }
+
+            switch ($t[0]) {
+                case T_START_HEREDOC:
+                    $docToken = $t[1];
+                    break;
+                case T_ENCAPSED_AND_WHITESPACE:
+                case T_CONSTANT_ENCAPSED_STRING:
+                    $message .= $t[1];
+                    break;
+                case T_END_HEREDOC:
+                    return PhpStringTokenParser::parseDocString($docToken, $message);
+                default:
+                    break 2;
+            }
+        }
+
+        if ($message) {
+            $message = PhpStringTokenParser::parse($message);
+        }
+
+        return $message;
+    }
+
+    /**
+     * Extracts trans message from PHP tokens.
+     *
+     * @param array            $tokens
+     * @param MessageCatalogue $catalog
+     */
+    protected function parseTokens($tokens, MessageCatalogue $catalog)
+    {
+        $tokenIterator = new \ArrayIterator($tokens);
+
+        for ($key = 0; $key < $tokenIterator->count(); ++$key) {
+            foreach ($this->sequences as $sequence) {
+                $message = '';
+                $domain = 'messages';
+                $tokenIterator->seek($key);
+
+                foreach ($sequence as $sequenceKey => $item) {
+                    $this->seekToNextRelevantToken($tokenIterator);
+
+                    if ($this->normalizeToken($tokenIterator->current()) === $item) {
+                        $tokenIterator->next();
+                        continue;
+                    } elseif (self::MESSAGE_TOKEN === $item) {
+                        $message = $this->getValue($tokenIterator);
+
+                        if (count($sequence) === ($sequenceKey + 1)) {
+                            break;
+                        }
+                    } elseif (self::METHOD_ARGUMENTS_TOKEN === $item) {
+                        $this->skipMethodArgument($tokenIterator);
+                    } elseif (self::DOMAIN_TOKEN === $item) {
+                        $domain = $this->getValue($tokenIterator);
+
+                        break;
+                    } else {
+                        break;
+                    }
+                }
+
+                if ($message) {
+                    $catalog->set($message, $this->prefix.$message, $domain);
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * @param string $file
+     *
+     * @return bool
+     *
+     * @throws \InvalidArgumentException
+     */
+    protected function canBeExtracted($file)
+    {
+        return $this->isFile($file) && 'php' === pathinfo($file, PATHINFO_EXTENSION);
+    }
+
+    /**
+     * @param string|array $directory
+     *
+     * @return array
+     */
+    protected function extractFromDirectory($directory)
+    {
+        $finder = new Finder();
+
+        return $finder->files()->name('*.php')->in($directory);
+    }
+}