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Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
This section is empty.
Types ¶
type RegretableReader ¶
type RegretableReader struct {
// contains filtered or unexported fields
}
A RegretableReader will allow you to read from a reader, and then to "regret" reading it, and push back everything you've read. For example,
rb := NewRegretableReader(bytes.NewBuffer([]byte{1,2,3}))
var b = make([]byte,1)
rb.Read(b) // b[0] = 1
rb.Regret()
ioutil.ReadAll(rb.Read) // returns []byte{1,2,3},nil
func NewRegretableReader ¶
func NewRegretableReader(r io.Reader) *RegretableReader
initialize a RegretableReader with underlying reader r
func NewRegretableReaderSize ¶
func NewRegretableReaderSize(r io.Reader, size int) *RegretableReader
initialize a RegretableReader with underlying reader r, whose buffer is size bytes long
func (*RegretableReader) Forget ¶
func (rb *RegretableReader) Forget()
Will "forget" everything read so far.
rb := NewRegretableReader(bytes.NewBuffer([]byte{1,2,3}))
var b = make([]byte,1)
rb.Read(b) // b[0] = 1
rb.Forget()
rb.Read(b) // b[0] = 2
rb.Regret()
ioutil.ReadAll(rb.Read) // returns []byte{2,3},nil
func (*RegretableReader) Read ¶
func (rb *RegretableReader) Read(p []byte) (n int, err error)
reads from the underlying reader. Will buffer all input until Regret is called.
func (*RegretableReader) Regret ¶
func (rb *RegretableReader) Regret()
The next read from the RegretableReader will be as if the underlying reader was never read (or from the last point forget is called).
type RegretableReaderCloser ¶
type RegretableReaderCloser struct {
RegretableReader
// contains filtered or unexported fields
}
Same as RegretableReader, but allows closing the underlying reader
func NewRegretableReaderCloser ¶
func NewRegretableReaderCloser(rc io.ReadCloser) *RegretableReaderCloser
initialize a RegretableReaderCloser with underlying readCloser rc
func NewRegretableReaderCloserSize ¶
func NewRegretableReaderCloserSize(rc io.ReadCloser, size int) *RegretableReaderCloser
initialize a RegretableReaderCloser with underlying readCloser rc
func (*RegretableReaderCloser) Close ¶
func (rbc *RegretableReaderCloser) Close() error
Closes the underlying readCloser, you cannot regret after closing the stream
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