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f3f48d7d49
This unifies the 3 methods of reading config * command line * environment variable * config file And allows them all to be configured in all places. This is done by making the []fs.Option in the backend registration be the master source of what the backend options are. The backend changes are: * Use the new configmap.Mapper parameter * Use configstruct to parse it into an Options struct * Add all config to []fs.Option including defaults and help * Remove all uses of pflag * Remove all uses of config.FileGet
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package alias
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import (
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"errors"
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"path"
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"path/filepath"
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"strings"
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"github.com/ncw/rclone/fs"
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"github.com/ncw/rclone/fs/config/configmap"
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"github.com/ncw/rclone/fs/config/configstruct"
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)
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// Register with Fs
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func init() {
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fsi := &fs.RegInfo{
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Name: "alias",
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Description: "Alias for a existing remote",
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NewFs: NewFs,
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Options: []fs.Option{{
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Name: "remote",
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Help: "Remote or path to alias.\nCan be \"myremote:path/to/dir\", \"myremote:bucket\", \"myremote:\" or \"/local/path\".",
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Required: true,
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}},
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}
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fs.Register(fsi)
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}
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// Options defines the configuration for this backend
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type Options struct {
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Remote string `config:"remote"`
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}
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// NewFs contstructs an Fs from the path.
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//
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// The returned Fs is the actual Fs, referenced by remote in the config
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func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
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// Parse config into Options struct
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opt := new(Options)
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err := configstruct.Set(m, opt)
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if err != nil {
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return nil, err
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}
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if opt.Remote == "" {
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return nil, errors.New("alias can't point to an empty remote - check the value of the remote setting")
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}
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if strings.HasPrefix(opt.Remote, name+":") {
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return nil, errors.New("can't point alias remote at itself - check the value of the remote setting")
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}
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_, configName, fsPath, err := fs.ParseRemote(opt.Remote)
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if err != nil {
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return nil, err
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}
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root = path.Join(fsPath, filepath.ToSlash(root))
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if configName == "local" {
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return fs.NewFs(root)
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}
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return fs.NewFs(configName + ":" + root)
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}
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