[hackertyper] type codes in your shell...

hackertyper.js

var util = require('util');
var fs = require('fs');

var type = function(data, completer) {
    var lines = data.split(' ');

    var i = 0;
    var timer = setInterval(function() {
        var s = lines[i++];
        while (lines[i] == '') {
            s += ' ';
            i++;
        }
        process.stdout.write(s + ' ');
        if (i == lines.length) {
            clearInterval(timer);
            completer();
        }
    }, Math.floor(Math.random()*100));
}

var read = function(file, completer) {
    if (!/.*\.(h|c|cpp|js)/i.test(file)) {
        console.log('ignore file: ', file);
        completer();
        return;
    }

    fs.readFile(file, 'utf-8', function(err, data) {
        if (err) {
            console.error('read file error: ', file);
            return;
        }

        console.log('typing file: ', file);
        type(data, completer);
    });
}


var i = 0;
var readnext = function(files) {
    read(files[i], function() {
        console.log('finish file: ', files[i]);
        i++;
        if (i == files.length) {
            console.log('finish all files');
            return;
        }
        readnext(files);
    });
}

// main
if (process.argv.length < 3) {
    console.log('Pls indicate your source directory');
    return;
}

var dir = process.argv[2];
fs.stat(dir, function(err, stats) {
    if (err) {
        console.log(err.message);
        return;
    }

    if (!stats.isDirectory()) {
        console.log('Not a directory');
        return;
    }

    process.chdir(dir);
    fs.readdir('.', function(err, files) {
        readnext(files); 
    })
})