forked from goadesign/gorma
/
underscore.go
35 lines (32 loc) · 715 Bytes
/
underscore.go
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package gorma
import (
"strings"
"unicode"
)
// Underscore a string
// bob dylan = bob_dylan
// Nice to see you! = nice_to_see_you
// widgetID = widget_id
func Underscore(s string) string {
return New(s).Underscore().String()
}
// Underscore a string
// bob dylan = bob_dylan
// Nice to see you! = nice_to_see_you
// widgetID = widget_id
func (i Ident) Underscore() Ident {
out := make([]string, 0, len(i.Parts))
for _, part := range i.Parts {
var x strings.Builder
x.Grow(len(part))
for _, c := range part {
if unicode.IsLetter(c) || unicode.IsDigit(c) {
x.WriteRune(c)
}
}
if x.Len() > 0 {
out = append(out, x.String())
}
}
return New(strings.ToLower(strings.Join(out, "_")))
}