barse/test/integration.js

Binary parser with a fluent api

var parse = require('..');
var test = require('tape');

test('integration', function (t) {
  var parser = parse()
    .readUInt8('string length')
    .string('string', 'string length')
    .readUInt8('field count')
    .loop('fields', 'field count', function (loop) {
      loop.readUInt8('some');
      loop.readUInt8('numbers');
    })

  parser.on('data', function (data) {
    t.deepEqual(data, {
      "string length" : 3,
      "string" : "foo",
      "field count" : 2,
      "fields" : [
        { "some" : 13, "numbers" : 37 },
        { "some" : 73, "numbers" : 31 }
      ]
    });
    t.end();
  });

  var buf = new Buffer(9);
  buf.writeUInt8(3, 0); // string length
  buf.write('foo', 1); // string
  buf.writeUInt8(2, 4); // field count
  buf.writeUInt8(13, 5); // fields[0].some
  buf.writeUInt8(37, 6); // fields[0].numbers
  buf.writeUInt8(73, 7); // fields[1].some
  buf.writeUInt8(31, 8); // fields[1].numbers

  parser.write(buf);
});