rtl-css/bin/rtl-css.js

Utility for converting CSS files using external rules

#!/usr/bin/env node

/*!
 * Copyright (C) 2015 by Yuriy Nasretdinov
 *
 * See license text in LICENSE file
 */

var ArgumentParser = require('argparse').ArgumentParser;
var parser = new ArgumentParser({
	prog: "proto2json",
	description: require('../package.json').description,
	version: require('../package.json').version,
	addHelp: true
});
parser.addArgument(
	[ '-i', '--input' ],
	{
		action: 'store',
		defaultValue: '/dev/stdin',
		type: 'string',
		help: 'Input file. Default: read from /dev/stdin.'
	}
);
parser.addArgument(
	[ '-o', '--output' ],
	{
		action: 'store',
		defaultValue: '/dev/stdout',
		help: 'Output file. Default: write to /dev/stdout.'
	}
);
parser.addArgument(
	[ '-d', '--direction' ],
	{
		action: 'store',
		defaultValue: 'ltr',
		help: 'Language direction: ltr or rtl. Default: ltr.'
	}
);
parser.addArgument(
	[ '-c', '--config' ],
	{
		action: 'store',
		defaultValue: false,
		help: 'Config file. Default: config that is used in Badoo.'
	}
);
var args = parser.parseArgs();

var fs = require('fs'), path = require('path');

// Get config
var default_config_name = path.join(path.dirname(fs.realpathSync(__filename)), '..', 'config.json');
var config_name = args.config ? args.config : default_config_name;
var config = fs.readFileSync(config_name);
if (!config) {
	console.log("Cannot read config from " + config_name);
	process.exit(1);
}

config = JSON.parse(config.toString());

// Read input
var input = fs.readFileSync(args.input);
if (!input) {
	console.log("Cannot read input from " + args.input);
	process.exit(1);
}
input = input.toString();

// Process
var rtlCss = require('../');
var output = rtlCss.processCss(rtlCss.processConfig(config), args.direction, input);

// Write output
var fd = fs.openSync(args.output, 'w');
if (!fd) {
	console.log("Cannot open output file " + args.output);
	process.exit(1);
}

var result = fs.writeSync(fd, output);
if (!result) {
	console.log("Cannot write output to " + args.output);
	process.exit(1);
}