39 lines
735 B
Go
39 lines
735 B
Go
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package util
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import (
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"bytes"
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"strings"
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"unicode"
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"golang.org/x/text/runes"
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"golang.org/x/text/transform"
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"golang.org/x/text/unicode/norm"
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)
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func Normalize(s string) []byte {
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t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
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s, _, _ = transform.String(t, s)
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s = strings.ToLower(s)
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return []byte(s)
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}
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func LowerCaseAlpha(s string) []byte {
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result := bytes.NewBuffer(nil)
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for _, x := range Normalize(s) {
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if x >= 'a' && x <= 'z' {
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result.WriteByte(x)
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}
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}
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return result.Bytes()
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}
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func LowerCaseAlphaOrDot(s string) []byte {
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result := bytes.NewBuffer(nil)
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for _, x := range Normalize(s) {
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if x >= 'a' && x <= 'z' || x == '.' {
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result.WriteByte(x)
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}
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}
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return result.Bytes()
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}
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