@stdlib/regexp/filename-posix/README.md

Regular expressions.

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# reFilenamePosix

> [Regular expression][mdn-regexp] to split a [POSIX][posix] filename.

<section class="usage">

## Usage

```javascript
var reFilenamePosix = require( '@stdlib/regexp/filename-posix' );
```

#### reFilenamePosix()

Returns a [regular expression][mdn-regexp] to split a [POSIX][posix] filename.

```javascript
var RE_FILENAME_POSIX = reFilenamePosix();
var parts = RE_FILENAME_POSIX.exec( '/foo/bar/index.js' ).slice();
/* returns
    [
        '/foo/bar/index.js',  // input value
        '/',                  // root
        'foo/bar/',           // dirname
        'index.js',           // basename
        '.js'                 // extname
    ]
*/
```

#### reFilenamePosix.REGEXP

[Regular expression][mdn-regexp] to split a [POSIX][posix] filename.

```javascript
var parts = reFilenamePosix.REGEXP.exec( '/foo/bar/index.js' ).slice();
/* returns
    [
        '/foo/bar/index.js',  // input value
        '/',                  // root
        'foo/bar/',           // dirname
        'index.js',           // basename
        '.js'                 // extname
    ]
*/
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   When executed against dotfile filenames (e.g., `.gitignore`), the [regular expression][mdn-regexp] does **not** capture the basename as a filename extension.

    ```javascript
    var parts = reFilenamePosix.REGEXP.exec( '.bash_profile' ).slice();
    /* returns
      [
          '.bash_profile',
          '',
          '',
          '.bash_profile',
          ''
      ]
    */

    parts = reFilenamePosix.REGEXP.exec( '.travis.yml' ).slice();
    /* returns
      [
          '.travis.yml',
          '',
          '',
          '.travis.yml',
          '.yml'
      ]
    */
    ```

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var reFilenamePosix = require( '@stdlib/regexp/filename-posix' );

var RE_FILENAME_POSIX = reFilenamePosix();
var parts = RE_FILENAME_POSIX.exec( 'index.js' ).slice();
/* returns
    [
        'index.js',
        '',
        '',
        'index.js',
        '.js'
    ]
*/

parts = RE_FILENAME_POSIX.exec( '/foo/bar/home.html' ).slice();
/* returns
    [
        '/foo/bar/home.html',
        '/',
        'foo/bar/',
        'home.html',
        '.html'
    ]
*/

parts = RE_FILENAME_POSIX.exec( 'foo/file.pdf' ).slice();
/* returns
    [
        'foo/file.pdf',
        '',
        'foo/',
        'file.pdf',
        '.pdf'
    ]
*/

parts = RE_FILENAME_POSIX.exec( 'beep/boop.' ).slice();
/* returns
    [
        'beep/boop.',
        '',
        'beep/',
        'boop.',
        '.'
    ]
*/

parts = RE_FILENAME_POSIX.exec( '' ).slice();
/* returns
    [
        '',
        '',
        '',
        '',
        ''
    ]
*/

parts = RE_FILENAME_POSIX.exec( '/foo/bar/file' ).slice();
/* returns
    [
        '/foo/bar/file',
        '/',
        'foo/bar/',
        'file',
        ''
    ]
*/

parts = RE_FILENAME_POSIX.exec( '/foo/bar/.gitignore' ).slice();
/* returns
    [
        '/foo/bar/.gitignore',
        '/',
        'foo/bar/',
        '.gitignore',
        ''
    ]
*/
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/regexp/filename`][@stdlib/regexp/filename]</span><span class="delimiter">: </span><span class="description">return a regular expression to split a filename.</span>
-   <span class="package-name">[`@stdlib/regexp/filename-windows`][@stdlib/regexp/filename-windows]</span><span class="delimiter">: </span><span class="description">return a regular expression to split a Windows filename.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="links">

[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

[posix]: https://en.wikipedia.org/wiki/POSIX

<!-- <related-links> -->

[@stdlib/regexp/filename]: https://github.com/stdlib-js/regexp/tree/main/filename

[@stdlib/regexp/filename-windows]: https://github.com/stdlib-js/regexp/tree/main/filename-windows

<!-- </related-links> -->

</section>

<!-- /.links -->