reExtnamePosix

Regular expression to capture a POSIX filename extension.

Installation

npm install @stdlib/regexp-extname-posix

Usage

var reExtnamePosix = require( '@stdlib/regexp-extname-posix' );

reExtnamePosix()

Returns a regular expression to capture a POSIX filename extension.

var RE_EXTNAME_POSIX = reExtnamePosix();
var ext = RE_EXTNAME_POSIX.exec( 'index.js' )[ 1 ];
// returns '.js'

reExtnamePosix.REGEXP

Regular expression to capture a POSIX filename extension.

var ext = reExtnamePosix.REGEXP.exec( 'index.js' )[ 1 ];
// returns '.js'

Notes

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

  var ext = reExtnamePosix.REGEXP.exec( '.bash_profile' )[ 1 ];
  // returns ''
  
  ext = reExtnamePosix.REGEXP.exec( '.travis.yml' )[ 1 ];
  // returns '.yml'

Examples

var reExtnamePosix = require( '@stdlib/regexp-extname-posix' );

var RE_EXTNAME_POSIX = reExtnamePosix();
var ext;

ext = RE_EXTNAME_POSIX.exec( 'index.js' )[ 1 ];
// returns '.js'

ext = RE_EXTNAME_POSIX.exec( '/foo/bar/home.html' )[ 1 ];
// returns '.html'

ext = RE_EXTNAME_POSIX.exec( 'foo/file.pdf' )[ 1 ];
// returns '.pdf'

ext = RE_EXTNAME_POSIX.exec( 'beep.' )[ 1 ];
// returns '.'

ext = RE_EXTNAME_POSIX.exec( '' )[ 1 ];
// returns ''

ext = RE_EXTNAME_POSIX.exec( '/foo/bar/file' )[ 1 ];
// returns ''

ext = RE_EXTNAME_POSIX.exec( '/foo/bar/.gitignore' )[ 1 ];
// returns ''

See Also

• @stdlib/regexp-extname: return a regular expression to capture a filename extension.
• @stdlib/regexp-extname-windows: return a regular expression to capture a Windows filename extension.
• @stdlib/utils-extname: return a filename extension.

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.