css-longhand-cli/cli.js

CLI for css-longhand

#!/usr/bin/env node

var meow = require("meow");
var logSymbols = require('log-symbols');
var fs = require("fs");
var cssLonghand = require("css-longhand");

var cli = meow({
    help: [
        "Usage",
        "  css-longhand <path/to/css> [path/to/out] --silent",
				"  [or] ",
				"  cat <path/to/css> | css-longhand"
    ]
});

function onError(err) {
	if (!cli.flags.silent) {
		process.stdout.write([logSymbols.error, 'Error converting file'].join(' '));
		process.stdout.write(err);
	}
	process.exit(1);
}

function init(data) {
  if(!data) {
		fs.readFile(cli.input[0], "utf-8", function(err, data) {
			if (err) {
				onError(err);
			} else {
				if (cli.input[1]) {
					fs.writeFile(cli.input[1], cssLonghand(data), function(err) {
						if (err) {
							onError(err);
						} else {
							if (!cli.flags.silent)
								process.stdout.write([logSymbols.success, 'Created', cli.input[1]].join(' '));
						}
					});
				} else process.stdout.write(cssLonghand(data));
			}
		});
	} else {
		process.stdout.write(cssLonghand(data.toString()));
	}
}

if (process.stdin.isTTY) {
	init();
} else {
	process.stdin.once('data', function (data) {
		init(data);
	});
}