github.com/timstclair/heapster@v0.20.0-alpha1/Godeps/_workspace/src/k8s.io/kubernetes/pkg/util/flags.go (about)

     1  /*
     2  Copyright 2014 The Kubernetes Authors All rights reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package util
    18  
    19  import (
    20  	goflag "flag"
    21  	"strings"
    22  
    23  	"github.com/golang/glog"
    24  	"github.com/spf13/pflag"
    25  )
    26  
    27  // WordSepNormalizeFunc changes all flags that contain "_" separators
    28  func WordSepNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
    29  	if strings.Contains(name, "_") {
    30  		return pflag.NormalizedName(strings.Replace(name, "_", "-", -1))
    31  	}
    32  	return pflag.NormalizedName(name)
    33  }
    34  
    35  // WarnWordSepNormalizeFunc changes and warns for flags that contain "_" separators
    36  func WarnWordSepNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
    37  	if strings.Contains(name, "_") {
    38  		nname := strings.Replace(name, "_", "-", -1)
    39  		glog.Warningf("%s is DEPRECATED and will be removed in a future version. Use %s instead.", name, nname)
    40  
    41  		return pflag.NormalizedName(nname)
    42  	}
    43  	return pflag.NormalizedName(name)
    44  }
    45  
    46  // InitFlags normalizes and parses the command line flags
    47  func InitFlags() {
    48  	pflag.CommandLine.SetNormalizeFunc(WordSepNormalizeFunc)
    49  	pflag.CommandLine.AddGoFlagSet(goflag.CommandLine)
    50  	pflag.Parse()
    51  }