gia-cli/lib/create/copyDir.js

Guardian US Interactive CLI tool

/*global require, module */
var path = require( 'path' );
var sander = require( 'sander' );

var Promise = sander.Promise;
var textFiles = [ '.js', '.css', '.scss', '.html', '.md', '.json' ];

module.exports = function ( root, dest, processor, renamer ) {
	return sander.lsr( root ).then( function ( files ) {
		var binaryFilePromises = files
			.filter( function ( file ) {
				return !~textFiles.indexOf( path.extname( file ) );
			})
			.map( function ( file ) {
				return sander.copyFile( root, file ).to( dest, renamer( file ) );
			});

		var textFilePromises = files
			.filter( function ( file ) {
				return ~textFiles.indexOf( path.extname( file ) );
			})
			.map( function ( file ) {
				return sander.readFile( root, file ).then( String ).then( processor ).then( function ( processed ) {
					return sander.writeFile( dest, renamer( file ), processed );
				});
			});

		return Promise.all( binaryFilePromises.concat( textFilePromises ) );
	});
};