diff vendor/symfony/translation/Extractor/PhpStringTokenParser.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/PhpStringTokenParser.php	Mon Apr 23 09:46:53 2018 +0100
@@ -0,0 +1,142 @@
+<?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;
+
+/*
+ * The following is derived from code at http://github.com/nikic/PHP-Parser
+ *
+ * Copyright (c) 2011 by Nikita Popov
+ *
+ * Some rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *
+ *     * The names of the contributors may not be used to endorse or
+ *       promote products derived from this software without specific
+ *       prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+class PhpStringTokenParser
+{
+    protected static $replacements = array(
+        '\\' => '\\',
+        '$' => '$',
+        'n' => "\n",
+        'r' => "\r",
+        't' => "\t",
+        'f' => "\f",
+        'v' => "\v",
+        'e' => "\x1B",
+    );
+
+    /**
+     * Parses a string token.
+     *
+     * @param string $str String token content
+     *
+     * @return string The parsed string
+     */
+    public static function parse($str)
+    {
+        $bLength = 0;
+        if ('b' === $str[0]) {
+            $bLength = 1;
+        }
+
+        if ('\'' === $str[$bLength]) {
+            return str_replace(
+                array('\\\\', '\\\''),
+                array('\\', '\''),
+                substr($str, $bLength + 1, -1)
+            );
+        } else {
+            return self::parseEscapeSequences(substr($str, $bLength + 1, -1), '"');
+        }
+    }
+
+    /**
+     * Parses escape sequences in strings (all string types apart from single quoted).
+     *
+     * @param string      $str   String without quotes
+     * @param null|string $quote Quote type
+     *
+     * @return string String with escape sequences parsed
+     */
+    public static function parseEscapeSequences($str, $quote)
+    {
+        if (null !== $quote) {
+            $str = str_replace('\\'.$quote, $quote, $str);
+        }
+
+        return preg_replace_callback(
+            '~\\\\([\\\\$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3})~',
+            array(__CLASS__, 'parseCallback'),
+            $str
+        );
+    }
+
+    private static function parseCallback($matches)
+    {
+        $str = $matches[1];
+
+        if (isset(self::$replacements[$str])) {
+            return self::$replacements[$str];
+        } elseif ('x' === $str[0] || 'X' === $str[0]) {
+            return chr(hexdec($str));
+        } else {
+            return chr(octdec($str));
+        }
+    }
+
+    /**
+     * Parses a constant doc string.
+     *
+     * @param string $startToken Doc string start token content (<<<SMTHG)
+     * @param string $str        String token content
+     *
+     * @return string Parsed string
+     */
+    public static function parseDocString($startToken, $str)
+    {
+        // strip last newline (thanks tokenizer for sticking it into the string!)
+        $str = preg_replace('~(\r\n|\n|\r)$~', '', $str);
+
+        // nowdoc string
+        if (false !== strpos($startToken, '\'')) {
+            return $str;
+        }
+
+        return self::parseEscapeSequences($str, null);
+    }
+}