rclone/backend/alias/alias.go
Nick Craig-Wood 57d5de6fba build: fix up package paths after repo move
git grep -l github.com/ncw/rclone | xargs -d'\n' perl -i~ -lpe 's|github.com/ncw/rclone|github.com/rclone/rclone|g'
goimports -w `find . -name \*.go`
2019-07-28 18:47:38 +01:00

54 lines
1.4 KiB
Go

package alias
import (
"errors"
"strings"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/config/configmap"
"github.com/rclone/rclone/fs/config/configstruct"
"github.com/rclone/rclone/fs/fspath"
)
// Register with Fs
func init() {
fsi := &fs.RegInfo{
Name: "alias",
Description: "Alias for an existing remote",
NewFs: NewFs,
Options: []fs.Option{{
Name: "remote",
Help: "Remote or path to alias.\nCan be \"myremote:path/to/dir\", \"myremote:bucket\", \"myremote:\" or \"/local/path\".",
Required: true,
}},
}
fs.Register(fsi)
}
// Options defines the configuration for this backend
type Options struct {
Remote string `config:"remote"`
}
// NewFs constructs an Fs from the path.
//
// The returned Fs is the actual Fs, referenced by remote in the config
func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
// Parse config into Options struct
opt := new(Options)
err := configstruct.Set(m, opt)
if err != nil {
return nil, err
}
if opt.Remote == "" {
return nil, errors.New("alias can't point to an empty remote - check the value of the remote setting")
}
if strings.HasPrefix(opt.Remote, name+":") {
return nil, errors.New("can't point alias remote at itself - check the value of the remote setting")
}
fsInfo, configName, fsPath, config, err := fs.ConfigFs(opt.Remote)
if err != nil {
return nil, err
}
return fsInfo.NewFs(configName, fspath.JoinRootPath(fsPath, root), config)
}