Sanitized FileInfo with safe getRealPath() and other handy methods


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composer require symplify/smart-file-system


Does SplFileInfo exist?

The SplFileInfo::getRealPath() method returns absolute path to the file... or FALSE, if the file doesn't exist. This default PHP behavior forces you to check all getRealPath() calls:

<?php declare(strict_types=1);

$fileInfo = new SplFileInfo('non_existing_file.txt');

if ($fileInfo->getRealPath() === false) {
    // damn, the files doesn't exist
    // throw exception or whatever
    // everytime!

$fileRealPath = $fileInfo->getRealPath();

While this has a reason - e.g. to be sure the file was not deleted since the construction, we actually have to call the method to find out the file was removed. Another annoyance is to tell this to static analyzers.

In reality, it's very rare to work with file that was existing a while ago, but now is gone, without us doing it on purpose. We usually use SplFileInfo to modify files or work with their paths.

What if:

  • we could remove this problem and make sure getRealPath() method always returns string?
  • get an exception of non-existing file on SplFileInfo creation?

Introducing SmartFileInfo

<?php declare(strict_types=1);

$fileInfo = new Symplify\SmartFileSystem\SmartFileInfo('non_existing_file.txt');
// throws Symplify\SmartFileSystem\Exception\FileNotFoundException

This class also bring new useful methods:

<?php declare(strict_types=1);

// current directory (cwd()) is "/var/www"
$smartFileInfo = new Symplify\SmartFileSystem\SmartFileInfo('/var/www/src/ExistingFile.php');

echo $smartFileInfo->getBasenameWithoutSuffix();
// "ExistingFile"

echo $smartFileInfo->getRelativeFilePath();
// "src/ExistingFile.php"

echo $smartFileInfo->getRelativeDirectoryPath();
// "src"

echo $smartFileInfo->getRelativeFilePathFromDirectory('/var');
// "www/src/ExistingFile.php"

It also fixes WTF behavior of Symfony\Component\Finder\SplFileInfo. Which one? When you run e.g. vendor/bin/ecs check src and use Finder, the getRelativeFilePath() in Symfony now returns all the relative paths to src. Which is useless, mainly with multiple dirs like: vendor/bin/ecs check src tests both containing file Post.php.

<?php declare(strict_types=1);

$smartFileInfo = new Symplify\SmartFileSystem\SmartFileInfo('/var/www/src/Post.php');

echo $smartFileInfo->getRelativeFilePathFromCwd();
// "src/Post.php"

File name Matching

Last but not least, matching a file comes useful in excluding files (typical for tools like ECS, PHPStan, Psalm, Rector, PHP CS Fixer or PHP_CodeSniffer):

<?php declare(strict_types=1);

$smartFileInfo = new Symplify\SmartFileSystem\SmartFileInfo('/var/www/src/PostRepository.php');

echo $smartFileInfo->endsWith('Repository.php');
// true

echo $smartFileInfo->doesFnmatch('*Repo*');
// true

Smart FileSystem - Just like Symfony, just Better

New method - readFile() (to read files):


$smartFileSystem = new Symplify\SmartFileSystem\SmartFileSystem();
$fileContent = $smartFileSystem->readFile(__DIR__ . '/SomeFile.php');
// if you plan to use SmartFileInfo, use this
$smartFileInfo = $smartFileSystem->readFileToSmartFileInfo(__DIR__ . '/SomeFile.php');

Sanitizer various files to SmartFileInfo[]

Do you have multiple file inputs that can mix-up?

<?php declare(strict_types=1);

$files = [new SplFileInfo('someFile.php')];

$files = [new Symfony\Component\Finder\SplFileInfo('someFile.php', 'someFile', '')];

// or
$files = (new Symfony\Component\Finder\Finder())->files();

// or
$files = Nette\Utils\Finder::findFiles('*');

// or
$files = ['someFile.php'];

Later, you wan to actually work with the files:


foreach ($files as $file) {
    // what methods do we have here
    // what kind of object?
    // is it even object or a string?

Use sanitized files, that have united format you can rely on:

<?php declare(strict_types=1);

use Symplify\SmartFileSystem\Finder\FinderSanitizer;

$finderSanitizer = new FinderSanitizer();
$smartFileInfos = $finderSanitizer->sanitize($files);

// always array of Symplify\SmartFileSystem\SmartFileInfo


The sources of this package are contained in the symplify monorepo. We welcome contributions for this package at symplify/symplify.