36 lines
603 B
Go
36 lines
603 B
Go
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package eventsource
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import (
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"io"
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)
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// A reader which normalises line endings
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// "/r" and "/r/n" are converted to "/n"
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type normaliser struct {
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r io.Reader
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lastChar byte
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}
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func newNormaliser(r io.Reader) *normaliser {
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return &normaliser{r: r}
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}
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func (norm *normaliser) Read(p []byte) (n int, err error) {
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n, err = norm.r.Read(p)
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for i := 0; i < n; i++ {
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switch {
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case p[i] == '\n' && norm.lastChar == '\r':
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copy(p[i:n], p[i+1:])
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norm.lastChar = p[i]
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n--
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i--
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case p[i] == '\r':
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norm.lastChar = p[i]
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p[i] = '\n'
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default:
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norm.lastChar = p[i]
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}
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}
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return
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}
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