mirror of https://github.com/k3s-io/k3s
51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package componentconfig
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import (
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"fmt"
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"net"
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)
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// used for validating command line ip addresses.
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type IPVar struct {
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Val *string
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}
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func (v IPVar) Set(s string) error {
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if net.ParseIP(s) == nil {
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return fmt.Errorf("%q is not a valid IP address", s)
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}
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if v.Val == nil {
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// it's okay to panic here since this is programmer error
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panic("the string pointer passed into IPVar should not be nil")
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}
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*v.Val = s
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return nil
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}
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func (v IPVar) String() string {
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if v.Val == nil {
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return ""
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}
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return *v.Val
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}
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func (v IPVar) Type() string {
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return "ip"
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}
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