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- // Copyright 2022 The Gitea Authors. All rights reserved.
- // SPDX-License-Identifier: MIT
-
- package charset
-
- import (
- "bytes"
- "io"
- )
-
- // BreakWriter wraps an io.Writer to always write '\n' as '<br>'
- type BreakWriter struct {
- io.Writer
- }
-
- // Write writes the provided byte slice transparently replacing '\n' with '<br>'
- func (b *BreakWriter) Write(bs []byte) (n int, err error) {
- pos := 0
- for pos < len(bs) {
- idx := bytes.IndexByte(bs[pos:], '\n')
- if idx < 0 {
- wn, err := b.Writer.Write(bs[pos:])
- return n + wn, err
- }
-
- if idx > 0 {
- wn, err := b.Writer.Write(bs[pos : pos+idx])
- n += wn
- if err != nil {
- return n, err
- }
- }
-
- if _, err = b.Writer.Write([]byte("<br>")); err != nil {
- return n, err
- }
- pos += idx + 1
-
- n++
- }
-
- return n, err
- }
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