cabana fingerprint

cabana-fingerprint.js

const fs = require('fs');

const content = fs.readFileSync('./data.csv', 'utf8');
const messages = content
    .split('\n')
    .map(line => line.trim())
    .filter(line => line.length > 0 && line !== 'time,addr,bus,data')
    .map(line => line.split(','))
    .map(msg => ({
        addr: parseInt(msg[1]),
        bus: parseInt(msg[2]),
        data: msg[3].replace(/0+$/, '')
    }))
    .filter(msg => msg.bus === 0);

const lengths = {};
for (let msg of messages) {
    const len = Math.ceil(msg.data.length / 2);
    if (len === 0) {
        continue;
    }

    lengths[msg.addr] = Math.max(lengths[msg.addr] || 0, len);
}

const fingerprint = Object.keys(lengths)
    .map(key => key + 'L: ' + lengths[key])
    .join(', ');

console.log(fingerprint);