Function IsBinary

utils/binary/read.go:171–195

IsBinary detects if data is a binary value based on: http://git.kernel.org/cgit/git/git.git/tree/xdiff-interface.c?id=HEAD#n198

(r io.Reader)

// IsBinary detects if data is a binary value based on:
// http://git.kernel.org/cgit/git/git.git/tree/xdiff-interface.c?id=HEAD#n198
func IsBinary(r io.Reader) (bool, error) {
	reader := bufio.NewReader(r)
	c := 0
	for {
		if c == sniffLen {
			break
		}

		b, err := reader.ReadByte()
		if err == io.EOF {
			break
		}
		if err != nil {
			return false, err
		}

		if b == byte(0) {
			return true, nil
		}

		c++
	}

	return false, nil
}