78 lines
2 KiB
Go
78 lines
2 KiB
Go
// Copyright 2014 Unknown
|
|
//
|
|
// 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
|
|
//
|
|
// http://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 zip
|
|
|
|
import (
|
|
"archive/zip"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
// A StreamArchive represents a streamable archive.
|
|
type StreamArchive struct {
|
|
*zip.Writer
|
|
}
|
|
|
|
// NewStreamArachive returns a new streamable archive with given io.Writer.
|
|
// It's caller's responsibility to close io.Writer and streamer after operation.
|
|
func NewStreamArachive(w io.Writer) *StreamArchive {
|
|
return &StreamArchive{zip.NewWriter(w)}
|
|
}
|
|
|
|
// StreamFile streams a file or directory entry into StreamArchive.
|
|
func (s *StreamArchive) StreamFile(relPath string, fi os.FileInfo, data []byte) error {
|
|
if fi.IsDir() {
|
|
fh, err := zip.FileInfoHeader(fi)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fh.Name = relPath + "/"
|
|
if _, err = s.Writer.CreateHeader(fh); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
fh, err := zip.FileInfoHeader(fi)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fh.Name = filepath.Join(relPath, fi.Name())
|
|
fh.Method = zip.Deflate
|
|
fw, err := s.Writer.CreateHeader(fh)
|
|
if err != nil {
|
|
return err
|
|
} else if _, err = fw.Write(data); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// StreamReader streams data from io.Reader to StreamArchive.
|
|
func (s *StreamArchive) StreamReader(relPath string, fi os.FileInfo, r io.Reader) (err error) {
|
|
fh, err := zip.FileInfoHeader(fi)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fh.Name = filepath.Join(relPath, fi.Name())
|
|
|
|
fw, err := s.Writer.CreateHeader(fh)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = io.Copy(fw, r)
|
|
return err
|
|
}
|