gistfile1.js

function unpackMobMetadata(pkt) {
    var x, data = {};
    while((x = unpackers.byte(pkt)) != 0x7f) {
        var id = x & 0x1f;
        switch(x >> 5) {
            case 0:
                data[id] = unpackers.byte(pkt);
                break;
            case 1:
                data[id] = unpackers.short(pkt);
                break;
            case 2:
                data[id] = unpackers.int(pkt);
                break;
            case 3:
                data[id] = unpackers.float(pkt);
                break;
            case 4:
                data[id] = unpackers.str16(pkt);
                break;
            default:
                throw new Error('Can\'t figure out what ' + (x >> 5) + ' means');
        }
    }
    return data;
}