readerutil

Documentation

Overview

Package readerutil provides and operates on io.Readers.

Index

• func OpenSingle(path string) (types.ReaderAtCloser, error)
• func ReaderSize(r io.Reader) (size int64, ok bool)
• type CountingReader
  • func (cr CountingReader) Read(p []byte) (n int, err error)

Functions

func OpenSingle

func OpenSingle(path string) (types.ReaderAtCloser, error)

OpenSingle opens the given file path for reading, reusing existing file descriptors when possible.

func ReaderSize

func ReaderSize(r io.Reader) (size int64, ok bool)

ReaderSize tries to determine the length of r.

Types

type CountingReader

type CountingReader struct {
	Reader io.Reader
	N      *int64
}

CountingReader wraps a Reader, incrementing N by the number of bytes read. No locking is performed.

func (CountingReader) Read

func (cr CountingReader) Read(p []byte) (n int, err error)