trainingproject/node_modules/msee/lib/cli.js

A module to teach you how to module.

var msee = require('./msee');
var nopt = require('nopt');
var path = require('path');
var tty = require('tty');

function showHelp() {
    var helpFile = path.resolve(__dirname, '../Help.md');
    var helpText = msee.parseFile(helpFile);
    
    console.log(helpText);
}

exports.main = function() {
    var opts = nopt(
        {
            "help": Boolean
        },
        {
            "h": [ "--help" ]
        },
        process.argv,
        2
    );

    if (opts.help) {
        showHelp();
    }
    else {
        var files = opts.argv.remain;
        if (files.length > 0) {
            try {
                var file = path.resolve(process.cwd(), files[0]);
                var text = msee.parseFile(file);
                process.stdout.write(text);
            }
            catch (e) {
                console.error(e.message);
            }
        }
        else if (!tty.isatty()) {
            var text = '';
            process.stdin.on('data', function(chunk) {
                text += chunk;
            });
            process.stdin.on('end', function() {
                var out = msee.parse(text);
                process.stdout.write(out);
            });
        }
        else {
            showHelp();
        }
    }
}