fs

Documentation

Index

• type AtomicWriter
  • func NewAtomicWriter(f string) (*AtomicWriter, error)
  • func (a *AtomicWriter) Close() error
  • func (a *AtomicWriter) Write(p []byte) (int, error)

Types

type AtomicWriter

type AtomicWriter struct {
	// contains filtered or unexported fields
}

func NewAtomicWriter

func NewAtomicWriter(f string) (*AtomicWriter, error)

NewAtomicWriter returns an io.WriteCloser that will write contents to a temp file and move that temp file to the destination filename. If the destination filename already exists, this constructor will copy the file to <filename>-old, truncating that file if it already exists.

func (*AtomicWriter) Close

func (a *AtomicWriter) Close() error

Close closes the temp file handle and moves the temp file to the final destination. Multiple calls to Close will have no effect after the first success.

func (*AtomicWriter) Write

func (a *AtomicWriter) Write(p []byte) (int, error)

Write writes the buffer to the temp file. You must call Close() to complete the move from temp file to dest file. Multiple calls to Write will append to the temp file.