CheckClose calls Close on the given io.Closer.

NewContextReadCloser as NewContextReader but with io.Closer interface.

NewContextReader wraps a reader to make it respect given Context.

NewContextWriteCloser as NewContextWriter but with io.Closer interface.

NewContextWriter wraps a writer to make it respect given Context.

NewReadCloser creates an `io.ReadCloser` with the given `io.Reader` and `io.Closer`.

NewReadCloserOnError returns a io.ReadCloser that call the notify function when an unexpected (!io.EOF) error happens, after call Read function.

NewReadCloserWithCloser creates an `io.ReadCloser` with the given `io.ReaderCloser` and `io.Closer` that ensures that the closer is closed on close.

NewReaderOnError returns a io.Reader that call the notify function when an unexpected (!io.EOF) error happens, after call Read function.

NewWriteCloser creates an `io.WriteCloser` with the given `io.Writer` and `io.Closer`.

NewWriteCloserOnError returns a io.WriteCloser that call the notify functionwhen an unexpected (!io.EOF) error happens, after call Write function.

NewWriterOnError returns a io.Writer that call the notify function when an unexpected (!io.EOF) error happens, after call Write function.

NonEmptyReader takes a reader and returns it if it is not empty, or `ErrEmptyReader` if it is empty.

WriteNopCloser returns a WriteCloser with a no-op Close method wrapping the provided Writer w.