counting

package module

v0.0.0-...-0f3846f Latest Latest Go to latest Published: Jul 11, 2014 License: BSD-3-Clause Imports: 1 Imported by: 1

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Package counting provides wrappers to add counting to io.Reader and io.Writer. Documentation: http://godoc.org/github.com/facebookgo/counting

Package counting provides wrappers to add counting to io.Reader and io.Writer.

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

Reader wraps an existing io.Reader and keeps track of how much has been read from it.

func NewReader(r io.Reader) *Reader

NewReader returns a new reader that will keep track of how much as been read.

func (r *Reader) Count() int

Count returns the number of bytes read so far.

func (r *Reader) Read(b []byte) (int, error)

Read some bytes into b and return the number of bytes read and error if any.

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

Writer provides out of band access to the number of bytes written.

func NewWriter(writer io.Writer) *Writer

NewWriter wraps an existing writer to track byte write count.

func (h *Writer) Clear()

Clear zeroes the byte write counter.

func (h *Writer) Count() int

Count returns the total number of bytes that were written to the underlying writer since the last call to Clear.

func (h *Writer) Write(p []byte) (n int, err error)

Write proxies to the underlying writer.