binutils64
v0.1.3
Published
A .NET-like BinaryReader and BinaryWriter with endianness support.
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binutils - .NET like BinaryReader and BinaryWriter for node.js
These utilities provide you with a BinaryReader and BinaryWriter class with functions similar to the corresponding .NET classes. They also allow you to define a specific endianness!
Basic installation and usage
You can install this package either by using npm or by downloading the source from GitHub and requiring it directly.
To install using npm open your terminal (or command line), make sure you're in your application directory and execute the following command:
npm install binutils64
You can then start using the package by requiring it from your application as such:
var binutils = require('binutils64');
BinaryReader Class
BinaryReader(inputBuffer, endianness, encoding)
- Initializes a BinaryReader with the specified settings
- inputBuffer can be a
Buffer
, astring
or anarray
ReadUInt8()
- Reads a 8 bit unsigned integer from the buffer and advances the current position by 1 byte
ReadUInt16()
- Reads a 16 bit unsigned integer from the buffer and advances the current position by 2 bytes
ReadUInt32()
- Reads a 32 bit unsigned integer from the buffer and advances the current position by 4 bytes
ReadInt8()
- Reads a 8 bit signed integer from the buffer and advances the current position by 1 byte
ReadInt16()
- Reads a 16 bit signed integer from the buffer and advances the current position by 2 bytes
ReadInt32()
- Reads a 32 bit signed integer from the buffer and advances the current position by 4 bytes
ReadFloat()
- Reads a float from the buffer and advances the current position by 4 bytes
ReadDouble()
- Reads a double from the buffer and advances the current position by 8 bytes
ReadBytes(count)
- Reads the specified number of bytes into a new buffer and advances the current position by that number of bytes
Length [Number]
- The length of the initially provided data
Position [Number]
- The current position (index) of the reader
ByteBuffer [Buffer]
- A buffer containing the remaining data from the original buffer
BinaryWriter Class
BinaryWriter(endianness, encoding)
- Initializes a BinaryWriter with the specified settings
WriteUInt8(value)
- Writes a 8 bit unsigned integer to the buffer and advances the current position by 1 byte
WriteUInt16(value)
- Writes a 16 bit unsigned integer to the buffer and advances the current position by 2 bytes
WriteUInt32(value)
- Writes a 32 bit unsigned integer to the buffer and advances the current position by 4 bytes
WriteInt8(value)
- Writes a 8 bit signed integer to the buffer and advances the current position by 1 byte
WriteInt16(value)
- Writes a 16 bit signed integer to the buffer and advances the current position by 2 bytes
WriteInt32(value)
- Writes a 32 bit signed integer to the buffer and advances the current position by 4 bytes
WriteFloat(value)
- Writes a float to the buffer and advances the current position by 4 bytes
WriteDouble(value)
- Writes a double to the buffer and advances the current position by 8 bytes
WriteBytes(value)
- Reads the specified number of bytes into a new buffer and advances the current position by that number of bytes
- value can be a
Buffer
, astring
or anarray
Length [Number]
- The length of the current data buffer
ByteBuffer [Buffer]
- A buffer containing the data written using the class functions
Example
var binutils = require('./binutils.js');
var buffer = new Buffer([1, 0, 2, 0, 0, 0, 3, 1, 2, 3, 4, 5, 6]);
var reader = new binutils.BinaryReader(buffer);
console.log(reader.ReadUInt8()); // Will print '1'
console.log(reader.ReadUInt16()); // Will print '2'
console.log(reader.ReadUInt32()); // Will print '3'
console.log(reader.ReadBytes(6)); // Will print '<Buffer 01 02 03 04 05 06>'
console.log(reader.Position); // Will print '13'
console.log(reader.Length); // Will print '13'
//
var writer = new binutils.BinaryWriter();
writer.WriteUInt16(65535);
writer.WriteUInt32(0);
writer.WriteInt32(-1);
writer.WriteBytes([5, 4, 3, 2, 1]);
console.log(writer.ByteBuffer); // Will print '<Buffer ff ff 00 00 00 00 ff ff ff ff 05 04 03 02 01>'
console.log(writer.Length); // Will print '15'
TODO
- Add support for 64-bit integers
- Add support for strings
- Add support for booleans