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Code Issues Releases Wiki Activity

backend: Use Get instead of Load for ReaderAt

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This commit is contained in:
Alexander Neumann 2017-01-23 17:04:23 +01:00
parent 82d9163955
commit fc235317fe
1 changed files with 18 additions and 2 deletions
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20
src/restic/readerat.go
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@ -9,11 +9,27 @@ type backendReaderAt struct {
h Handle h Handle
} }
func (brd backendReaderAt) ReadAt(p []byte, off int64) (n int, err error) { func (brd backendReaderAt) ReadAt(p []byte, offset int64) (n int, err error) {
return brd.be.Load(brd.h, p, off) return ReadAt(brd.be, brd.h, offset, p)
} }
// ReaderAt returns an io.ReaderAt for a file in the backend. // ReaderAt returns an io.ReaderAt for a file in the backend.
func ReaderAt(be Backend, h Handle) io.ReaderAt { func ReaderAt(be Backend, h Handle) io.ReaderAt {
return backendReaderAt{be: be, h: h} return backendReaderAt{be: be, h: h}
} }
// ReadAt reads from the backend handle h at the given position.
func ReadAt(be Backend, h Handle, offset int64, p []byte) (n int, err error) {
rd, err := be.Get(h, len(p), offset)
if err != nil {
return 0, err
}
n, err = io.ReadFull(rd, p)
e := rd.Close()
if err == nil {
err = e
}
return n, err
}