Byte array with an `_io` member: JavaScript parsing library

Helper type to work around Kaitai Struct not providing an _io member for plain byte arrays.

KS implementation details

License: MIT

This page hosts a formal specification of Byte array with an `_io` member using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.

Usage

Runtime library

All parsing code for JavaScript generated by Kaitai Struct depends on the JavaScript runtime library. You have to install it before you can parse data.

The JavaScript runtime library is available at npm:

npm install kaitai-struct

Code

See the usage examples in the JavaScript notes.

Parse structure from an ArrayBuffer:

var arrayBuffer = ...;
var data = new BytesWithIo(new KaitaiStream(arrayBuffer));

After that, one can get various attributes from the structure by accessing fields or properties like:

data.data // => The actual data.

JavaScript source code to parse Byte array with an `_io` member

BytesWithIo.js

// This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild

(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    define(['kaitai-struct/KaitaiStream'], factory);
  } else if (typeof module === 'object' && module.exports) {
    module.exports = factory(require('kaitai-struct/KaitaiStream'));
  } else {
    root.BytesWithIo = factory(root.KaitaiStream);
  }
}(this, function (KaitaiStream) {
/**
 * Helper type to work around Kaitai Struct not providing an `_io` member for plain byte arrays.
 */

var BytesWithIo = (function() {
  function BytesWithIo(_io, _parent, _root) {
    this._io = _io;
    this._parent = _parent;
    this._root = _root || this;

    this._read();
  }
  BytesWithIo.prototype._read = function() {
    this.data = this._io.readBytesFull();
  }

  /**
   * The actual data.
   */

  return BytesWithIo;
})();
return BytesWithIo;
}));