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70 lines
1.1 KiB
Go
70 lines
1.1 KiB
Go
// Copyright 2015 The Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package markdown
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import (
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"bufio"
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"io"
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)
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type writer interface {
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Write([]byte) (int, error)
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WriteByte(byte) error
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WriteString(string) (int, error)
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Flush() error
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}
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type monadicWriter struct {
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writer
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err error
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}
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func newMonadicWriter(w io.Writer) *monadicWriter {
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if w, ok := w.(writer); ok {
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return &monadicWriter{writer: w}
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}
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return &monadicWriter{writer: bufio.NewWriter(w)}
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}
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func (w *monadicWriter) Write(p []byte) (n int, err error) {
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if w.err != nil {
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return
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}
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n, err = w.writer.Write(p)
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w.err = err
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return
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}
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func (w *monadicWriter) WriteByte(b byte) (err error) {
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if w.err != nil {
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return
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}
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err = w.writer.WriteByte(b)
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w.err = err
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return
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}
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func (w *monadicWriter) WriteString(s string) (n int, err error) {
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if w.err != nil {
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return
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}
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n, err = w.writer.WriteString(s)
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w.err = err
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return
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}
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func (w *monadicWriter) Flush() (err error) {
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if w.err != nil {
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return
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}
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err = w.writer.Flush()
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w.err = err
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return
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}
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