forked from mirror/redis
48 lines
777 B
Go
48 lines
777 B
Go
package internal
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import "reflect"
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func ToLower(s string) string {
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if isLower(s) {
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return s
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}
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b := make([]byte, len(s))
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for i := range b {
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c := s[i]
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if c >= 'A' && c <= 'Z' {
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c += 'a' - 'A'
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}
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b[i] = c
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}
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return BytesToString(b)
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}
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func isLower(s string) bool {
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for i := 0; i < len(s); i++ {
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c := s[i]
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if c >= 'A' && c <= 'Z' {
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return false
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}
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}
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return true
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}
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func SliceNextElem(v reflect.Value) reflect.Value {
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if v.Len() < v.Cap() {
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v.Set(v.Slice(0, v.Len()+1))
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return v.Index(v.Len() - 1)
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}
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elemType := v.Type().Elem()
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if elemType.Kind() == reflect.Ptr {
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elem := reflect.New(elemType.Elem())
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v.Set(reflect.Append(v, elem))
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return elem.Elem()
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}
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v.Set(reflect.Append(v, reflect.Zero(elemType)))
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return v.Index(v.Len() - 1)
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}
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