Named Data object Notation specification

NDN (Named Data object Notation) is a library designed for handling binary data in a Node.js environment. It provides functions for encoding and decoding various data types into a binary format. This library allows users to efficiently work with binary data, facilitating tasks such as serialization and deserialization of complex data structures.

Features:

• Encoding and decoding of boolean, integer, floating-point, string, array, object, null, and undefined data types.
• Support for handling nested arrays and objects during encoding and decoding processes.
• Utilizes base64 encoding for efficient representation of binary data.
• Offers flexibility for working with different types of data, enabling seamless integration into various applications.

Format

byte type
string name
[payload]

The type is a single byte defining the contents of the payload.
The name is a descriptive name, and can be anything.

The Data types and respective payloads are:

Type: 0  Name: end
Payload: None.
Note:    This tag is used to mark the end of a array and object.

Type: 1  Name: boolean
Payload: A single signed byte (8 bits)

Type: 2  Name: int
Payload: A single signed byte (8 bits)

Type: 3  Name: float
Payload: A floating point value (32 bits, big endian, IEEE 754-2008, binary32)

Type: 4  Name: string
Payload: short length +
An array of bytes defining a string in UTF-8 format. The length of this array is <length> bytes

Type: 6 Name: array
Payload: An array of bytes

Type: 7 Name: null
Payload: ""

Type: 8 Name: object
Payload: An array of bytes with names

Type: 9 Name: undefined
Payload: ""

Example

Code:

import {encode, decode} from "ndn-binary";

let data = {
    bool: true, 
    test: 12, 
    super: 3.1415,
    hello: 'world', 
    arr: [4, 1, 2, 3],
    nullable: null,
    obj: {foo: 'bar'},
    und: undefined
};

let result = encode(data);

Inside:

Type_object(""):
{
    Type_boolean("bool"): 1
    Type_int("test"): 12
    Type_float("super"): 3.1415
    Type_string("hello"): world
    Type_array("arr"):
    {
        Type_int(0): 4
        Type_int(1): 1
        Type_int(2): 2
        Type_int(3): 3
    }
    Type_null("nullable"): ""
    Type_object("obj"):
    {
        Type_string("foo"): bar
    }
    Type_null("und"): ""
}