AtomicWriteFile atomically writes data to a file named by filename and with the specified permission bits.

NewAtomicFileWriter returns WriteCloser so that writing to it writes to a temporary file and closing it atomically changes the temporary file to destination path.

NewAtomicWriteSet creates a new atomic write set to atomically create a set of files.

NewCancelReadCloser creates a wrapper that closes the ReadCloser when the context is cancelled.

NewReadCloserWrapper wraps an io.Reader, and implements an io.ReadCloser.

NewWriteCloserWrapper returns a new io.WriteCloser.

NewWriteFlusher returns a new WriteFlusher.

WriteFlusher wraps the Write and Flush operation ensuring that every write is a flush.

AtomicWriteSet is used to atomically write a set of files and ensure they are visible at the same time.