45 lines
775 B
Go
45 lines
775 B
Go
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package encoding
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import (
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"bufio"
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"io"
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)
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const (
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LineEndingUnknown LineEnding = ""
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LineEndingWindows LineEnding = "\r\n"
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LineEndingUnix LineEnding = "\n"
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)
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type LineEnding string
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func (e LineEnding) String() string {
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return string(e)
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}
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func (e LineEnding) Escaped() string {
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switch e {
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case LineEndingUnix:
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return "\\n"
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case LineEndingWindows:
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return "\\r\\n"
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default:
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return ""
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}
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}
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func Detect(reader io.Reader) (LineEnding, error) {
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bufferedReader := bufio.NewReader(reader)
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line, err := bufferedReader.ReadString(byte('\n'))
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if err != nil {
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return LineEndingUnknown, err
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}
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lineLength := len(line)
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if lineLength <= 1 || line[lineLength-2:] != LineEndingWindows.String() {
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return LineEndingUnix, nil
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}
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return LineEndingWindows, nil
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}
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