/
gzip.go
69 lines (59 loc) · 1.85 KB
/
gzip.go
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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package gzip
import (
"io"
"github.com/klauspost/compress/gzip"
)
// These constants are copied from the gzip package.
const (
NoCompression = gzip.NoCompression
BestSpeed = gzip.BestSpeed
BestCompression = gzip.BestCompression
DefaultCompression = gzip.DefaultCompression
ConstantCompression = gzip.ConstantCompression
HuffmanOnly = gzip.HuffmanOnly
)
// Reader represents an interface for Reader of gzip.
type Reader interface {
io.ReadCloser
Reset(r io.Reader) error
Multistream(ok bool)
}
// Writer represents an interface for Writer of gzip.
type Writer interface {
io.WriteCloser
Reset(w io.Writer)
Flush() error
}
// Gzip is an interface to create Writer and Reader implementation.
type Gzip interface {
NewReader(r io.Reader) (Reader, error)
NewWriterLevel(w io.Writer, level int) (Writer, error)
}
type compress struct{}
// New returns Gzip implementation.
func New() Gzip {
return new(compress)
}
// NewWriterLevel returns Writer implementation.
func (*compress) NewWriterLevel(w io.Writer, level int) (Writer, error) {
return gzip.NewWriterLevel(w, level)
}
// NewReader returns Reader implementation.
func (*compress) NewReader(r io.Reader) (Reader, error) {
return gzip.NewReader(r)
}