woothee/scripts/dataset_yaml2js.js

User-Agent string parser (js implementation)

var fs = require('fs')
  , util = require('util')
  , serialize_to_js = require('serialize-to-js')
  , yaml = require('js-yaml');

var dataset_entries = yaml.safeLoad(fs.readFileSync(__dirname + '/../woothee/dataset.yaml', 'utf8'))
  , js_file = __dirname + '/../lib/dataset.js';

var generated_timestamp;
var generated_username;
var header_data;
var footer_data;

var exec = require('child_process').exec;
exec('env LANG=C date', function(err, stdout, stderr){
  generated_timestamp = stdout.toString().split("\n").join('');
});
exec('env LANG=C whoami', function(err, stdout, stderr){
  generated_username = stdout.toString().split("\n").join('');
});

fs.readFile(__dirname + '/dataset_header.js', function(err, data){
  header_data = data.toString();
});
fs.readFile(__dirname + '/dataset_footer.js', function(err, data){
  footer_data = data.toString();
});

var dumpToFile = function() {
  var data = {};

  dataset_entries.forEach(function(dataset){
    var label = dataset.label
      , name = dataset.name
      , type = dataset.type;
    var entry = {label: label, name: name, type: type};
    if (type === 'browser') {
      entry['vendor'] = dataset.vendor;
    } else if (type === 'os') {
      entry['category'] = dataset.category;
    } else if (type === 'full') {
      entry['vendor'] = (dataset.vendor ? dataset.vendor : '');
      entry['category'] = dataset.category;
      if (dataset.os) {
        entry['os'] = dataset.os;
      }
    }
    data[entry.label] = entry;
  });

  var defs = [
    util.format("// GENERATED from dataset.yaml at %s by %s", generated_timestamp, generated_username),
    'var DATASET = ' + serialize_to_js(data) + ';'
  ];

  fs.writeFile(js_file, header_data + defs.join("\n") + footer_data, function(err){ 
     if (err) throw err;
  });
};

var checkcallback = function(){
  if (generated_username && generated_timestamp && header_data && footer_data)
    dumpToFile();
  else
    setTimeout(checkcallback, 100);
};

checkcallback();