magic

Documentation

Overview

Package magic implements the magic number detection for files and block devices.

Index

• type Magic
  • func (magic *Magic) BlockSize() int
  • func (magic *Magic) Matches(buf []byte) bool

Types

type Magic

type Magic struct {
	// Value to search for.
	Value []byte

	// Offset in the file where the magic value is located.
	Offset int
}

Magic defines a filesystem/volume manager/etc magic value.

func (*Magic) BlockSize

func (magic *Magic) BlockSize() int

BlockSize returns the size of the buffer that needs to be read from the disk to detect the magic value.

func (*Magic) Matches

func (magic *Magic) Matches(buf []byte) bool

Matches returns true if the magic value is found at the specified offset in the buffer.