23 lines
376 B
Go
23 lines
376 B
Go
package smtpd
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// Wrap a byte slice paragraph for use in SMTP header
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func wrap(sl []byte) []byte {
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length := 0
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for i := 0; i < len(sl); i++ {
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if length > 76 && sl[i] == ' ' {
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sl = append(sl, 0, 0)
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copy(sl[i+2:], sl[i:])
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sl[i] = '\r'
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sl[i+1] = '\n'
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sl[i+2] = '\t'
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i += 2
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length = 0
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}
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if sl[i] == '\n' {
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length = 0
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}
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length++
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}
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return sl
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}
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