add sioutil package
#8
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This commit introduces the `sioutil` package. It contains just a `NopCloser` method that is related to https://golang.org/pkg/io/ioutil/#NopCloser. It wraps a io.Writer and returns a io.WriteCloser that does nothing on Close(). This is useful when en/decrypting an io.Writer but completing the en/decryption process should not close the sink. For example: ``` ew := s.EncryptWriter(sioutil.NopCloser(w), nonce, associatedData) defer ew.Close() // This does not close 'w'. ``` updates #7
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What does the PR do?
This PR introduces the
sioutilpackage.It contains just a
NopClosermethod that isrelated to https://golang.org/pkg/io/ioutil/#NopCloser.
It wraps a io.Writer and returns a io.WriteCloser that
does nothing on Close().
This is useful when en/decrypting an io.Writer but completing
the en/decryption process should not close the sink.
For example:
What problem does it solve?
updates #7