ioutils - "C"-style binary read & write with structs

Golang package that provides reading & writing of structs from/to binary files, similar to C and other languages. This is achieved by reflection, and can read streams that conform to io.Reader interface.

Supported data types:

• uint8/16/32/64 (littleEndian and bigEndian)
• int8/16/32/64 (littleEndian and bigEndian)
• byte
• slices
• arrays
• nested structs

Example:

package png

import (
	"io"
	"encoding/binary"
	"github.com/joao-pinheiro/ioutils"
)

type PNGSignature [8]byte

type Chunk struct {
	Size uint32
	Type [4]byte
}

type IHDR struct {
	Width       uint32
	Height      uint32
	Bit         uint8
	ColorType   uint8
	Compression uint8
	Filter      uint8
	Interlace   uint8
}

type PNGHeader struct {
	PNGSignature
	Chunk
	IHDR
	CRC uint32
}

func ReadPNGHeader(file io.Reader) (*PNGHeader, error) {
	header := &PNGHeader{}
	if err := ReadStruct(file, header, binary.BigEndian); err != nil {
		return nil, err
	}
	return header, nil
}

#todo: type yy struct { A string B string C string } type xxx struct { Abc [10]yyy }

todo

// check read-write with 64 bit unsigned values