github.com/sacloud/iaas-api-go@v1.12.0/accessor/tags.go (about)

     1  // Copyright 2022-2023 The sacloud/iaas-api-go 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 accessor
    16  
    17  import "github.com/sacloud/iaas-api-go/types"
    18  
    19  // Tags Tagsを持つリソース向けのインターフェース
    20  type Tags interface {
    21  	GetTags() types.Tags
    22  	SetTags(v types.Tags)
    23  }
    24  
    25  // HasTag 指定のタグが存在する場合trueを返す
    26  func HasTag(target Tags, tag string) bool {
    27  	tags := target.GetTags()
    28  	for _, t := range tags {
    29  		if t == tag {
    30  			return true
    31  		}
    32  	}
    33  	return false
    34  }
    35  
    36  // AppendTag 指定のタグを追加
    37  func AppendTag(target Tags, tag string) {
    38  	if HasTag(target, tag) {
    39  		return
    40  	}
    41  	tags := target.GetTags()
    42  	target.SetTags(append(tags, tag))
    43  }
    44  
    45  // RemoveTag 指定のタグを削除
    46  func RemoveTag(target Tags, tag string) {
    47  	if !HasTag(target, tag) {
    48  		return
    49  	}
    50  
    51  	tags := target.GetTags()
    52  	nt := types.Tags{}
    53  	for _, t := range tags {
    54  		if t != tag {
    55  			nt = append(nt, t)
    56  		}
    57  	}
    58  	target.SetTags(nt)
    59  }
    60  
    61  // ClearTags 全タグをクリア
    62  func ClearTags(target Tags) {
    63  	target.SetTags(types.Tags{})
    64  }