go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/logdog/client/cli/trinaryFlag.go (about)

     1  // Copyright 2015 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cli
    16  
    17  import (
    18  	"flag"
    19  
    20  	"go.chromium.org/luci/common/flag/flagenum"
    21  	"go.chromium.org/luci/logdog/client/coordinator"
    22  )
    23  
    24  type trinaryValue coordinator.QueryTrinary
    25  
    26  var _ flag.Value = (*trinaryValue)(nil)
    27  
    28  var trinaryFlagEnum = flagenum.Enum{
    29  	"":    coordinator.Both,
    30  	"yes": coordinator.Yes,
    31  	"no":  coordinator.No,
    32  }
    33  
    34  func (v trinaryValue) Trinary() coordinator.QueryTrinary {
    35  	return coordinator.QueryTrinary(v)
    36  }
    37  
    38  func (v *trinaryValue) String() string {
    39  	return trinaryFlagEnum.FlagString(*v)
    40  }
    41  
    42  func (v *trinaryValue) Set(s string) error {
    43  	var tv coordinator.QueryTrinary
    44  	if err := trinaryFlagEnum.FlagSet(&tv, s); err != nil {
    45  		return err
    46  	}
    47  	*v = trinaryValue(tv)
    48  	return nil
    49  }