README

Split Filename

Regular expression to split a POSIX filename.

Installation

$ npm install regex-filename-posix

Usage

var re = require( 'regex-filename-posix' );

re

Regular expression to split a POSIX filename.

var parts = re.exec( '/foo/bar/index.js' );
/*
    [
        '/foo/bar/index.js',   // input value
        '/',                   // root
        'foo/bar/',            // dirname
        'index.js',            // basename
        '.js'                  // extname
    ]
*/

Notes

When executed against dotfile filenames (e.g., .gitignore), the regular expression does not capture the basename as a filename extension.

var parts = re.exec( '.bash_profile' );
/*
    [
        '.bash_profile',
        '',
        '',
        '.bash_profile',
        ''
    ]
*/

parts = re.exec( '.travis.yml' );
/*
    [
        '.travis.yml',
        '',
        '',
        '.travis.yml',
        '.yml'
    ]
*/

Examples

var re = require( 'regex-filename-posix' );

var parts;

parts = re.exec( 'index.js' );
/*
    [
        'index.js',
        '',
        '',
        'index.js',
        '.js'
    ]
*/

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

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

parts = re.exec( 'beep/boop.' );
/*
    [
        'beep/boop.',
        '',
        'beep/',
        'boop.',
        '.'
    ]
*/

parts = re.exec( '' );
/*
    [
        '',
        '',
        '',
        '',
        ''
    ]
*/

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

parts = re.exec( '/foo/bar/.gitignore' );
/*
    [
        '/foo/bar/.gitignore',
        '/',
        'foo/bar/',
        '.gitignore',
        ''
    ]
*/

To run the example code from the top-level application directory,

$ node ./examples/index.js

Tests

Unit

Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:

$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

$ make view-cov

License

MIT license.

regex-filename-posix

Usage no npm install needed!