forked from mirror/afero
142 lines
3.4 KiB
Go
142 lines
3.4 KiB
Go
// Copyright © 2021 Vasily Ovchinnikov <vasily@remerge.io>.
|
|
//
|
|
// The code in this file is derived from afero fork github.com/Zatte/afero by Mikael Rapp
|
|
// licensed under Apache License 2.0.
|
|
//
|
|
// 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 gcsfs
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"time"
|
|
|
|
"cloud.google.com/go/storage"
|
|
)
|
|
|
|
const (
|
|
folderSize = 42
|
|
)
|
|
|
|
type FileInfo struct {
|
|
name string
|
|
size int64
|
|
updated time.Time
|
|
isDir bool
|
|
fileMode os.FileMode
|
|
}
|
|
|
|
func newFileInfo(name string, fs *GcsFs, fileMode os.FileMode) (*FileInfo, error) {
|
|
res := &FileInfo{
|
|
name: name,
|
|
size: folderSize,
|
|
updated: time.Time{},
|
|
isDir: false,
|
|
fileMode: fileMode,
|
|
}
|
|
|
|
obj, err := fs.getObj(name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
objAttrs, err := obj.Attrs(fs.ctx)
|
|
if err != nil {
|
|
if err.Error() == ErrEmptyObjectName.Error() {
|
|
// It's a root folder here, we return right away
|
|
res.name = fs.ensureTrailingSeparator(res.name)
|
|
res.isDir = true
|
|
return res, nil
|
|
} else if err.Error() == ErrObjectDoesNotExist.Error() {
|
|
// Folders do not actually "exist" in GCloud, so we have to check, if something exists with
|
|
// such a prefix
|
|
bucketName, bucketPath := fs.splitName(name)
|
|
it := fs.client.Bucket(bucketName).Objects(
|
|
fs.ctx, &storage.Query{Delimiter: fs.separator, Prefix: bucketPath, Versions: false})
|
|
if _, err = it.Next(); err == nil {
|
|
res.name = fs.ensureTrailingSeparator(res.name)
|
|
res.isDir = true
|
|
return res, nil
|
|
}
|
|
|
|
return nil, ErrFileNotFound
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
res.size = objAttrs.Size
|
|
res.updated = objAttrs.Updated
|
|
|
|
return res, nil
|
|
}
|
|
|
|
func newFileInfoFromAttrs(objAttrs *storage.ObjectAttrs, fileMode os.FileMode) *FileInfo {
|
|
res := &FileInfo{
|
|
name: objAttrs.Name,
|
|
size: objAttrs.Size,
|
|
updated: objAttrs.Updated,
|
|
isDir: false,
|
|
fileMode: fileMode,
|
|
}
|
|
|
|
if res.name == "" {
|
|
if objAttrs.Prefix != "" {
|
|
// It's a virtual folder! It does not have a name, but prefix - this is how GCS API
|
|
// deals with them at the moment
|
|
res.name = objAttrs.Prefix
|
|
res.size = folderSize
|
|
res.isDir = true
|
|
}
|
|
}
|
|
|
|
return res
|
|
}
|
|
|
|
func (fi *FileInfo) Name() string {
|
|
return filepath.Base(filepath.FromSlash(fi.name))
|
|
}
|
|
|
|
func (fi *FileInfo) Size() int64 {
|
|
return fi.size
|
|
}
|
|
func (fi *FileInfo) Mode() os.FileMode {
|
|
if fi.IsDir() {
|
|
return os.ModeDir | fi.fileMode
|
|
}
|
|
return fi.fileMode
|
|
}
|
|
|
|
func (fi *FileInfo) ModTime() time.Time {
|
|
return fi.updated
|
|
}
|
|
|
|
func (fi *FileInfo) IsDir() bool {
|
|
return fi.isDir
|
|
}
|
|
|
|
func (fi *FileInfo) Sys() interface{} {
|
|
return nil
|
|
}
|
|
|
|
type ByName []*FileInfo
|
|
|
|
func (a ByName) Len() int { return len(a) }
|
|
func (a ByName) Swap(i, j int) {
|
|
a[i].name, a[j].name = a[j].name, a[i].name
|
|
a[i].size, a[j].size = a[j].size, a[i].size
|
|
a[i].updated, a[j].updated = a[j].updated, a[i].updated
|
|
a[i].isDir, a[j].isDir = a[j].isDir, a[i].isDir
|
|
}
|
|
func (a ByName) Less(i, j int) bool { return strings.Compare(a[i].Name(), a[j].Name()) == -1 }
|