7-zip a whole bunch of directories in a directory

zip-dirs.js

// Module imports
var _ = require('underscore'),
	test = require('shelljs').test,
	which = require('shelljs').which,
	listdir = require('shelljs').ls,
	exec = require('shelljs').exec;

// suppress output of commands
require('shelljs').config.silent = true;

// Parse commandline arguments
var argv = process.argv.slice(2);
var zipFormat = _.contains(argv, '-zip');
argv = _.filter(argv, function(arg) { return !(_.contains(['-zip'], arg)); })

// Check 7za is on the PATH
if (!which('7za')) { throw new Error("7-zip archiver not found on the PATH.") };

// Build compression function
var compress = (function (zipFormat) {
	
	var ext = zipFormat ? '.zip' : '.7z',
		typeSwitch = zipFormat ? '-tzip' : '';

	return function (item) {
		console.log('compressing '+item+' to '+item+ext);
		exec('7za a '+typeSwitch+' '+item+ext+' '+item);
	}

})(zipFormat);

// Compress every folder in the given directory
function compressFolders (directory) {
	if (!test('-d', directory)) { throw new Error("argument '"+directory+"' is not a directory") };

	listdir(directory+'/*').forEach(function (item) {
		if (test('-d', item)) {
			// console.log('directory: ', item);
			compress(item);
		};
	});
}

// Compress folders in directories given as arguments
_.each(argv, compressFolders);