K5 bot for #learnprogramming and #jsoftware on freenode

oK-bot.js

// An IRC bot for the k5 programming language,
// using oK from : https://github.com/JohnEarnest/ok
"use strict";
var irc = require('irc');
var ok = require('./ok/ok');

const MAXLINES = 8;

var client = new irc.Client('irc.freenode.net', 'oK-bot', {
    channels: ['#jsoftware', '#learnprogramming']
});

function runK(src) {
    return ok.format(ok.run(ok.parse(src), ok.baseEnv()));
}

client.addListener('message', (from, to, msg)=> {
    if (to.startsWith('#') && msg.startsWith('k ')) {
        var result;
        try { result = runK(msg.substring(2)); }
        catch (err) { result = 'ERROR: ' + err.message; }
        var line, lines = result.split("\n");
        for (var i=0; i<lines.length; i++) {
            if (i >= MAXLINES && lines.length != MAXLINES) {
                line = '...';
                break;
            } else line = lines[i];
            client.say(to, `${from}: ${line}`);
        }
    }
});