iobit

Package iobit provides primitives for reading & writing bits

The main purpose of this library is to remove the need to write custom bit-masks when reading or writing bitstreams, and to ease maintenance. This is true especially when you need to read/write data which is not aligned on bytes.

iobit is an open source library under the MIT license

Documentation

Documentation is available at http://godoc.org/github.com/bamiaux/iobit

Installation

Into the gopath

    go get github.com/bamiaux/iobit

Import it in your code

    import (
        "github.com/bamiaux/iobit"
    )

Usage

Reading

    var buffer []byte
    r := iobit.NewReader(buffer)
    base := r.Uint64Be(33)     // PCR base is 33-bits
    r.Skip(6)                  // 6-bits are reserved
    extension := r.Uint64Be(9) // PCR extension is 9-bits
    if err := r.Check(); err != nil {
        return err
    }

Writing

    var buffer []byte
    w := iobit.NewWriter(buffer)
    w.PutUint64Be(33, base)
    w.PutUint32Be(6, 0)
    w.PutUint32Be(9, extension)
    if err := w.Flush(); err != nil {
        return err
    }