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reExtname
Regular expression to capture a filename extension.
Installation
npm install @stdlib/regexp-extname
Usage
var reExtname = require( '@stdlib/regexp-extname' );
reExtname( [platform] )
Returns a regular expression to capture a filename extension.
var RE = reExtname();
// returns <RegExp>
RE = reExtname( 'posix' );
// returns <RegExp>
var ext = RE.exec( '/foo/bar/index.js' )[ 1 ];
// returns '.js'
RE = reExtname( 'win32' );
// returns <RegExp>
ext = RE.exec( 'C:\\foo\\bar\\index.js' )[ 1 ];
// returns '.js'
reExtname.REGEXP
Regular expression to capture a filename extension.
var bool = ( reExtname.REGEXP.toString() === reExtname().toString() );
// returns true
reExtname.REGEXP_POSIX
Regular expression to capture a POSIX filename extension.
var ext = reExtname.REGEXP_POSIX.exec( '/foo/bar/index.js' )[ 1 ];
// returns '.js'
reExtname.REGEXP_WIN32
Regular expression to capture a Windows filename extension.
var ext = reExtname.REGEXP_WIN32.exec( 'C:\\foo\\bar\\index.js' )[ 1 ];
// returns '.js'
Notes
- The as
REGEXP
exported regular expression is platform-dependent. If the current process is running on Windows,REGEXP === REGEXP_WIN32
; otherwise,REGEXP === REGEXP_POSIX
.
Examples
var reExtname = require( '@stdlib/regexp-extname' );
var RE_EXTNAME = reExtname();
var ext;
// Assuming a POSIX platform...
ext = RE_EXTNAME.exec( '/foo/bar/index.js' )[ 1 ];
// returns '.js'
ext = reExtname.REGEXP_WIN32.exec( '/foo/bar/home.html' )[ 1 ];
// returns '.html'
ext = reExtname.REGEXP_WIN32.exec( 'C:\\foo\\bar\\home.html' )[ 1 ];
// returns '.html'
See Also
-
@stdlib/regexp-extname-posix
: return a regular expression to capture a POSIX 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.