45 lines
852 B
Go
45 lines
852 B
Go
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// Copyright 2022 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package charset
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import (
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"bytes"
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"io"
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)
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// BreakWriter wraps an io.Writer to always write '\n' as '<br>'
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type BreakWriter struct {
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io.Writer
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}
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// Write writes the provided byte slice transparently replacing '\n' with '<br>'
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func (b *BreakWriter) Write(bs []byte) (n int, err error) {
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pos := 0
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for pos < len(bs) {
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idx := bytes.IndexByte(bs[pos:], '\n')
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if idx < 0 {
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wn, err := b.Writer.Write(bs[pos:])
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return n + wn, err
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}
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if idx > 0 {
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wn, err := b.Writer.Write(bs[pos : pos+idx])
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n += wn
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if err != nil {
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return n, err
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}
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}
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if _, err = b.Writer.Write([]byte("<br>")); err != nil {
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return n, err
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}
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pos += idx + 1
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n++
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}
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return n, err
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}
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