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78 lines
2.0 KiB
78 lines
2.0 KiB
8 years ago
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// Copyright 2014 Unknown
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package zip
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import (
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"archive/zip"
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"io"
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"os"
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"path/filepath"
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)
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// A StreamArchive represents a streamable archive.
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type StreamArchive struct {
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*zip.Writer
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}
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// NewStreamArachive returns a new streamable archive with given io.Writer.
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// It's caller's responsibility to close io.Writer and streamer after operation.
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func NewStreamArachive(w io.Writer) *StreamArchive {
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return &StreamArchive{zip.NewWriter(w)}
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}
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// StreamFile streams a file or directory entry into StreamArchive.
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func (s *StreamArchive) StreamFile(relPath string, fi os.FileInfo, data []byte) error {
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if fi.IsDir() {
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fh, err := zip.FileInfoHeader(fi)
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if err != nil {
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return err
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}
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fh.Name = relPath + "/"
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if _, err = s.Writer.CreateHeader(fh); err != nil {
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return err
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}
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} else {
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fh, err := zip.FileInfoHeader(fi)
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if err != nil {
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return err
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}
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fh.Name = filepath.Join(relPath, fi.Name())
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fh.Method = zip.Deflate
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fw, err := s.Writer.CreateHeader(fh)
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if err != nil {
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return err
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} else if _, err = fw.Write(data); err != nil {
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return err
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}
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}
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return nil
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}
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// StreamReader streams data from io.Reader to StreamArchive.
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func (s *StreamArchive) StreamReader(relPath string, fi os.FileInfo, r io.Reader) (err error) {
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fh, err := zip.FileInfoHeader(fi)
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if err != nil {
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return err
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}
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fh.Name = filepath.Join(relPath, fi.Name())
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fw, err := s.Writer.CreateHeader(fh)
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if err != nil {
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return err
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}
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_, err = io.Copy(fw, r)
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return err
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}
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