57 lines
927 B
Go
57 lines
927 B
Go
package dataext
|
|
|
|
import "io"
|
|
|
|
type BufferedReadCloser interface {
|
|
io.ReadCloser
|
|
BufferedAll() ([]byte, error)
|
|
}
|
|
|
|
type bufferedReadCloser struct {
|
|
buffer []byte
|
|
inner io.ReadCloser
|
|
finished bool
|
|
}
|
|
|
|
func (b *bufferedReadCloser) Read(p []byte) (int, error) {
|
|
|
|
n, err := b.inner.Read(p)
|
|
if n > 0 {
|
|
b.buffer = append(b.buffer, p[0:n]...)
|
|
}
|
|
|
|
if err == io.EOF {
|
|
b.finished = true
|
|
}
|
|
|
|
return n, err
|
|
}
|
|
|
|
func NewBufferedReadCloser(sub io.ReadCloser) BufferedReadCloser {
|
|
return &bufferedReadCloser{
|
|
buffer: make([]byte, 0, 1024),
|
|
inner: sub,
|
|
finished: false,
|
|
}
|
|
}
|
|
|
|
func (b *bufferedReadCloser) Close() error {
|
|
err := b.inner.Close()
|
|
if err != nil {
|
|
b.finished = true
|
|
}
|
|
return err
|
|
}
|
|
|
|
func (b *bufferedReadCloser) BufferedAll() ([]byte, error) {
|
|
arr := make([]byte, 1024)
|
|
for !b.finished {
|
|
_, err := b.Read(arr)
|
|
if err != nil && err != io.EOF {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return b.buffer, nil
|
|
}
|