-
Notifications
You must be signed in to change notification settings - Fork 20
/
cmdutil_writer.go
61 lines (49 loc) · 1.03 KB
/
cmdutil_writer.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
package cmdutil
import (
"bufio"
"github.com/hashicorp/go-multierror"
"io"
"os"
)
type OutputWriter struct {
delegate io.Writer
writer *bufio.Writer
mustClose bool
}
func NewOutputWriter(delegate io.Writer) (*OutputWriter, error) {
answer := OutputWriter{
delegate: delegate,
writer: bufio.NewWriter(delegate),
mustClose: false,
}
return &answer, nil
}
func NewOutputFileWriter(path string) (*OutputWriter, error) {
delegate, err := os.Create(path)
if err != nil {
return nil, err
}
answer := OutputWriter{
delegate: delegate,
writer: bufio.NewWriter(delegate),
mustClose: true,
}
return &answer, nil
}
func (in *OutputWriter) Write(p []byte) (n int, err error) {
return in.writer.Write(p)
}
func (in *OutputWriter) Close() error {
var err error
if ferr := in.writer.Flush(); err != nil {
err = multierror.Append(err, ferr)
}
if in.mustClose {
if c, ok := in.delegate.(io.Closer); ok {
if cerr := c.Close(); cerr != nil {
err = multierror.Append(err, cerr)
}
}
}
return err
}