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flagopts.go
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flagopts.go
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// Copyright (c) 2022 Intel Corporation. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License")
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package agent
import (
"fmt"
"strings"
)
// flagOpts implements pflag.Value interface.
type flagOpts struct {
Allowed []string
Value string
}
// newFlagOpts gives a list of allowed flag parameters, where the second argument is the default
func newFlagOpts(allowed []string, d string) *flagOpts {
return &flagOpts{
Allowed: allowed,
Value: d,
}
}
func (f flagOpts) String() string {
return f.Value
}
func (f *flagOpts) Set(p string) error {
for _, opt := range f.Allowed {
if p == opt {
f.Value = p
return nil
}
}
return fmt.Errorf("%s is not included in %s", p, strings.Join(f.Allowed, ","))
}
func (f *flagOpts) Type() string {
return "string"
}