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109 lines
3.8 KiB
Markdown
109 lines
3.8 KiB
Markdown
# VFS (Virtual File System)
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[](https://gitter.im/adlawson/vfs.php?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
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<img src="http://media.giphy.com/media/d6Unw9Ke0vCFO/giphy.gif" alt="Virtual File System" align="right" width=310/>
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[![Master branch build status][ico-build]][travis]
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[![Published version][ico-package]][package]
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[![PHP ~5.4][ico-engine]][lang]
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[![MIT Licensed][ico-license]][license]
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**VFS** is a virtual file system for PHP built using the stream wrapper API.
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Streams are exposed just as typical `file://` or `http://` streams are to PHP's
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built-in functions and keywords like `fopen` and `require`. This implementation
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attempts to stay true to the typical streams, including triggering warnings
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and handling edge cases appropriately.
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It can be installed in whichever way you prefer, but I recommend
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[Composer][package].
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```json
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{
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"require": {
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"adlawson/vfs": "*"
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}
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}
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```
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## Documentation
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After creating and mounting the file system, you have the option of manipulating
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the virtual file system either via PHP's built-in functions, the VFS interfaces,
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or interfaces provided by another file system library.
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```php
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<?php
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use Vfs\FileSystem;
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use Vfs\Node\Directory;
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use Vfs\Node\File;
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// Create and mount the file system
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$fs = FileSystem::factory('vfs://');
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// Add `/foo` and `/foo/bar.txt`
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$foo = new Directory(['bar.txt' => new File('Hello, World!')]);
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$fs->get('/')->add('foo', $foo);
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// Get contents of `/foo/bar.txt`
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$fs->get('/foo/bar.txt')->getContent(); // Hello, World!
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file_get_contents('vfs://foo/bar.txt'); // Hello, World!
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// Add `/foo/bar` and `/foo/bar/baz.php`
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mkdir('vfs://foo/bar');
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file_put_contents('vfs://foo/bar.php', '<?php echo "Hello, World!";');
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// Require `/foo/bar.php`
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require 'vfs://foo/baz.php';
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// Works with any other file system library too
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$symfony = new Symfony\Component\Filesystem\Filesystem();
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$symfony->mkdir('vfs://foo/bar/baz');
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$laravel = new Illuminate\Filesystem();
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$laravel->isDirectory('vfs://foo/bar/baz'); //true
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// Triggers PHP warnings on error just like typical streams
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rename('vfs://path/to/nowhere', 'vfs://path/to/somewhere');
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// PHP Warning: rename(vfs://path/to/nowhere,vfs://path/to/somewhere): No such file or directory in /srv/index.php on line 1; triggered in /srv/src/Logger/PhpErrorLogger.php on line 32
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```
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### Example use cases
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If you need to ask what you'd use a virtual file system for, you probably don't
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need one, but just in case, I've compiled a small list of examples:
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- Testing file system libraries without writing to disc
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- Runtime evaluation without `eval` (via `write` and `require`)
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- ...we need some more!
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### Todo
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Current tasks are listed on the [github issues][issues] page, but some are
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listed here for reference:
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- Symlinks
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- File locks
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- Permissions/ACL
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## Contributing
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Contributions are accepted via Pull Request, but passing unit tests must be
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included before it will be considered for merge.
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```bash
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$ curl -O https://raw.githubusercontent.com/adlawson/vagrantfiles/master/php/Vagrantfile
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$ vagrant up
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$ vagrant ssh
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...
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$ cd /srv
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$ composer install
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$ vendor/bin/phpunit
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```
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### License
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The content of this library is released under the **MIT License** by
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**Andrew Lawson**.<br/> You can find a copy of this license in
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[`LICENSE`][license] or at http://opensource.org/licenses/mit.
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[travis]: https://travis-ci.org/adlawson/vfs.php
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[lang]: http://php.net
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[package]: https://packagist.org/packages/adlawson/vfs
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[ico-license]: http://img.shields.io/packagist/l/adlawson/vfs.svg?style=flat
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[ico-package]: http://img.shields.io/packagist/v/adlawson/vfs.svg?style=flat
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[ico-build]: http://img.shields.io/travis/adlawson/vfs.php/master.svg?style=flat
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[ico-engine]: http://img.shields.io/badge/php-~5.4-8892BF.svg?style=flat
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[issues]: https://github.com/adlawson/vfs.php/issues
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[license]: LICENSE
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