ioutil

Documentation

Overview

Package ioutil implements some I/O utility functions.

Index

• Variables
• func CheckClose(c io.Closer, err *error)
• func NewReadCloser(r io.Reader, c io.Closer) io.ReadCloser
• func NonEmptyReader(r io.Reader) (io.Reader, error)
• func WriteNopCloser(w io.Writer) io.WriteCloser

Examples

• CheckClose

Variables

var (
	ErrEmptyReader = errors.New("reader is empty")
)

Functions

func CheckClose

func CheckClose(c io.Closer, err *error)

CheckClose calls Close on the given io.Closer. If the given *error points to nil, it will be assigned the error returned by Close. Otherwise, any error returned by Close will be ignored. CheckClose is usually called with defer.

Example

func NewReadCloser

func NewReadCloser(r io.Reader, c io.Closer) io.ReadCloser

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

func NonEmptyReader

func NonEmptyReader(r io.Reader) (io.Reader, error)

NonEmptyReader takes a reader and returns it if it is not empty, or `ErrEmptyReader` if it is empty. If there is an error when reading the first byte of the given reader, it will be propagated.

func WriteNopCloser

func WriteNopCloser(w io.Writer) io.WriteCloser

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