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fs: add Wrap feature for FS to identify their parent FS (#1884)

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remusb 2017-12-06 17:14:34 +02:00 • committed by GitHub
parent ebd7780188
commit 25b073c767
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3 changed files with 49 additions and 4 deletions
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16
cache/cache.go vendored
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@ -206,6 +206,7 @@ type Storage interface {
// Fs represents a wrapped fs.Fs
type Fs struct {
fs.Fs
wrapper fs.Fs
name string
root string
@ -379,7 +380,9 @@ func NewFs(name, rpath string) (fs.Fs, error) {
PutStream: f.PutStream,
CleanUp: f.CleanUp,
UnWrap: f.UnWrap,
}).Fill(f).Mask(wrappedFs)
WrapFs: f.WrapFs,
SetWrapper: f.SetWrapper,
}).Fill(f).Mask(wrappedFs).WrapsFs(f, wrappedFs)
return f, wrapErr
}
@ -938,6 +941,16 @@ func (f *Fs) UnWrap() fs.Fs {
return f.Fs
}
// WrapFs returns the Fs that is wrapping this Fs
func (f *Fs) WrapFs() fs.Fs {
return f.wrapper
}
// SetWrapper sets the Fs that is wrapping this Fs
func (f *Fs) SetWrapper(wrapper fs.Fs) {
f.wrapper = wrapper
}
// DirCacheFlush flushes the dir cache
func (f *Fs) DirCacheFlush() {
_ = f.cache.RemoveDir("")
@ -963,5 +976,6 @@ var (
_ fs.PutStreamer = (*Fs)(nil)
_ fs.CleanUpper = (*Fs)(nil)
_ fs.UnWrapper = (*Fs)(nil)
_ fs.Wrapper = (*Fs)(nil)
_ fs.ListRer = (*Fs)(nil)
)