1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// Copyright 2018 the u-root Authors. All rights reserved
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uio
import (
"bytes"
"io"
"io/ioutil"
"math"
"reflect"
)
type inMemReaderAt interface {
Bytes() []byte
}
// ReadAll reads everything that r contains.
//
// Callers *must* not modify bytes in the returned byte slice.
//
// If r is an in-memory representation, ReadAll will attempt to return a
// pointer to those bytes directly.
func ReadAll(r io.ReaderAt) ([]byte, error) {
if imra, ok := r.(inMemReaderAt); ok {
return imra.Bytes(), nil
}
return ioutil.ReadAll(Reader(r))
}
// Reader generates a Reader from a ReaderAt.
func Reader(r io.ReaderAt) io.Reader {
return io.NewSectionReader(r, 0, math.MaxInt64)
}
// ReaderAtEqual compares the contents of r1 and r2.
func ReaderAtEqual(r1, r2 io.ReaderAt) bool {
var c, d []byte
var r1err, r2err error
if r1 != nil {
c, r1err = ReadAll(r1)
}
if r2 != nil {
d, r2err = ReadAll(r2)
}
return bytes.Equal(c, d) && reflect.DeepEqual(r1err, r2err)
}
|
