File size: 4,008 Bytes
e4f4821
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
<?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\Finder\Iterator;

use Symfony\Component\Finder\Gitignore;

final class VcsIgnoredFilterIterator extends \FilterIterator
{
    /**
     * @var string
     */
    private $baseDir;

    /**
     * @var array<string, array{0: string, 1: string}|null>
     */
    private $gitignoreFilesCache = [];

    /**
     * @var array<string, bool>
     */
    private $ignoredPathsCache = [];

    public function __construct(\Iterator $iterator, string $baseDir)
    {
        $this->baseDir = $this->normalizePath($baseDir);

        parent::__construct($iterator);
    }

    public function accept(): bool
    {
        $file = $this->current();

        $fileRealPath = $this->normalizePath($file->getRealPath());

        return !$this->isIgnored($fileRealPath);
    }

    private function isIgnored(string $fileRealPath): bool
    {
        if (is_dir($fileRealPath) && !str_ends_with($fileRealPath, '/')) {
            $fileRealPath .= '/';
        }

        if (isset($this->ignoredPathsCache[$fileRealPath])) {
            return $this->ignoredPathsCache[$fileRealPath];
        }

        $ignored = false;

        foreach ($this->parentsDirectoryDownward($fileRealPath) as $parentDirectory) {
            if ($this->isIgnored($parentDirectory)) {
                // rules in ignored directories are ignored, no need to check further.
                break;
            }

            $fileRelativePath = substr($fileRealPath, \strlen($parentDirectory) + 1);

            if (null === $regexps = $this->readGitignoreFile("{$parentDirectory}/.gitignore")) {
                continue;
            }

            [$exclusionRegex, $inclusionRegex] = $regexps;

            if (preg_match($exclusionRegex, $fileRelativePath)) {
                $ignored = true;

                continue;
            }

            if (preg_match($inclusionRegex, $fileRelativePath)) {
                $ignored = false;
            }
        }

        return $this->ignoredPathsCache[$fileRealPath] = $ignored;
    }

    /**
     * @return list<string>
     */
    private function parentsDirectoryDownward(string $fileRealPath): array
    {
        $parentDirectories = [];

        $parentDirectory = $fileRealPath;

        while (true) {
            $newParentDirectory = \dirname($parentDirectory);

            // dirname('/') = '/'
            if ($newParentDirectory === $parentDirectory) {
                break;
            }

            $parentDirectory = $newParentDirectory;

            if (0 !== strpos($parentDirectory, $this->baseDir)) {
                break;
            }

            $parentDirectories[] = $parentDirectory;
        }

        return array_reverse($parentDirectories);
    }

    /**
     * @return array{0: string, 1: string}|null
     */
    private function readGitignoreFile(string $path): ?array
    {
        if (\array_key_exists($path, $this->gitignoreFilesCache)) {
            return $this->gitignoreFilesCache[$path];
        }

        if (!file_exists($path)) {
            return $this->gitignoreFilesCache[$path] = null;
        }

        if (!is_file($path) || !is_readable($path)) {
            throw new \RuntimeException("The \"ignoreVCSIgnored\" option cannot be used by the Finder as the \"{$path}\" file is not readable.");
        }

        $gitignoreFileContent = file_get_contents($path);

        return $this->gitignoreFilesCache[$path] = [
            Gitignore::toRegex($gitignoreFileContent),
            Gitignore::toRegexMatchingNegatedPatterns($gitignoreFileContent),
        ];
    }

    private function normalizePath(string $path): string
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            return str_replace('\\', '/', $path);
        }

        return $path;
    }
}