This file is indexed.

/usr/share/php/Symfony/Component/ClassLoader/ClassMapGenerator.php is in php-symfony-class-loader 2.7.10-0ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
<?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\ClassLoader;

if (!defined('SYMFONY_TRAIT')) {
    if (PHP_VERSION_ID >= 50400) {
        define('SYMFONY_TRAIT', T_TRAIT);
    } else {
        define('SYMFONY_TRAIT', 0);
    }
}

/**
 * ClassMapGenerator.
 *
 * @author Gyula Sallai <salla016@gmail.com>
 */
class ClassMapGenerator
{
    /**
     * Generate a class map file.
     *
     * @param array|string $dirs Directories or a single path to search in
     * @param string       $file The name of the class map file
     */
    public static function dump($dirs, $file)
    {
        $dirs = (array) $dirs;
        $maps = array();

        foreach ($dirs as $dir) {
            $maps = array_merge($maps, static::createMap($dir));
        }

        file_put_contents($file, sprintf('<?php return %s;', var_export($maps, true)));
    }

    /**
     * Iterate over all files in the given directory searching for classes.
     *
     * @param \Iterator|string $dir The directory to search in or an iterator
     *
     * @return array A class map array
     */
    public static function createMap($dir)
    {
        if (is_string($dir)) {
            $dir = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($dir));
        }

        $map = array();

        foreach ($dir as $file) {
            if (!$file->isFile()) {
                continue;
            }

            $path = $file->getRealPath();

            if (pathinfo($path, PATHINFO_EXTENSION) !== 'php') {
                continue;
            }

            $classes = self::findClasses($path);

            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();
            }

            foreach ($classes as $class) {
                $map[$class] = $path;
            }
        }

        return $map;
    }

    /**
     * Extract the classes in the given file.
     *
     * @param string $path The file to check
     *
     * @return array The found classes
     */
    private static function findClasses($path)
    {
        $contents = file_get_contents($path);
        $tokens = token_get_all($contents);

        $classes = array();

        $namespace = '';
        for ($i = 0; isset($tokens[$i]); ++$i) {
            $token = $tokens[$i];

            if (!isset($token[1])) {
                continue;
            }

            $class = '';

            switch ($token[0]) {
                case T_NAMESPACE:
                    $namespace = '';
                    // If there is a namespace, extract it
                    while (isset($tokens[++$i][1])) {
                        if (in_array($tokens[$i][0], array(T_STRING, T_NS_SEPARATOR))) {
                            $namespace .= $tokens[$i][1];
                        }
                    }
                    $namespace .= '\\';
                    break;
                case T_CLASS:
                case T_INTERFACE:
                case SYMFONY_TRAIT:
                    // Skip usage of ::class constant
                    $isClassConstant = false;
                    for ($j = $i - 1; $j > 0; --$j) {
                        if (!isset($tokens[$j][1])) {
                            break;
                        }

                        if (T_DOUBLE_COLON === $tokens[$j][0]) {
                            $isClassConstant = true;
                            break;
                        } elseif (!in_array($tokens[$j][0], array(T_WHITESPACE, T_DOC_COMMENT, T_COMMENT))) {
                            break;
                        }
                    }

                    if ($isClassConstant) {
                        break;
                    }

                    // Find the classname
                    while (isset($tokens[++$i][1])) {
                        $t = $tokens[$i];
                        if (T_STRING === $t[0]) {
                            $class .= $t[1];
                        } elseif ('' !== $class && T_WHITESPACE === $t[0]) {
                            break;
                        }
                    }

                    $classes[] = ltrim($namespace.$class, '\\');
                    break;
                default:
                    break;
            }
        }

        return $classes;
    }
}