41 lines
795 B
Go
41 lines
795 B
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package ranger
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import (
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"io"
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"os"
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)
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// FileHandleRanger returns a Closer from a file handle. The
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// Closer's Close method will call fh.Close().
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// Footgun: If FileHandleRanger fails, fh.Close will not have been called.
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func FileHandleRanger(fh *os.File) (Closer, error) {
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stat, err := fh.Stat()
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if err != nil {
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return nil, Error.Wrap(err)
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}
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return struct {
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Ranger
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io.Closer
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}{
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Ranger: ReaderAtRanger(fh, stat.Size()),
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Closer: fh,
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}, nil
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}
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// FileRanger returns a Closer from a path.
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func FileRanger(path string) (Closer, error) {
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fh, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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r, err := FileHandleRanger(fh)
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if err != nil {
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fh.Close()
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return nil, err
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}
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return r, nil
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}
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