xkcd.js

#! /usr/local/bin/node
"use strict";

var wordsPerLine = 4;

var crypto = require("crypto");
var fs = require("fs");

var words = JSON.parse(fs.readFileSync(__dirname + "/words.json").toString("UTF8")).words;
var count = words.length;

console.log("Found",count,"words");

if (count < 4000)
	throw new Error("Less than 4,000 words, this smells.");

var i,j,k,idx,word,lineWords;

var lines = [];
var maxLen = 0;

for (i = 0; i < 10; i++) { // Total strings
	
	lineWords = [];
	
	for (j = 0; j < wordsPerLine; j++) { // Words per string
		idx = Math.floor(rand() * count);
		word = words[idx].toLowerCase();
		if (rand() > 0.7) {
			word = word.toUpperCase();
		}
		lineWords.push(word);
	}

	// (probably) replace a word with a number
	if (Math.floor(rand() * wordsPerLine)) {
		idx = Math.floor(rand() * wordsPerLine);
		lineWords[idx] = Math.floor(rand() * 8889) + 1111;
	}

	// Squish it all down 
	lines.push(lineWords.join("."));
}

// Print them out with a little dressing

lines.forEach(function(line) {
	maxLen = Math.max(maxLen, line.length);
});

console.log(lines.map(center).join("\n"));

function center(line) {
	var result = "    ";
	var offset = Math.round((maxLen-line.length)/2);
	for (var i = 0; i < offset; i++) {
		result += " ";
	}
	return result + line;
}

function rand() {
	var result = 0.0;
	var bytes = crypto.randomBytes(10);
	for (var i = 0; i < 10; i++) {
		result += bytes[i];
		result = result / 256.0;
		// console.log("  " + result);
	}

	return result;
}