github.com/Racer159/helm-experiment@v0.0.0-20230822001441-1eb31183f614/src/repo_list.go (about) 1 /* 2 Copyright The Helm Authors. 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 cmd 18 19 import ( 20 "fmt" 21 "io" 22 23 "github.com/gosuri/uitable" 24 "github.com/pkg/errors" 25 "github.com/spf13/cobra" 26 27 "helm.sh/helm/v3/cmd/helm/require" 28 "helm.sh/helm/v3/pkg/cli/output" 29 "helm.sh/helm/v3/pkg/repo" 30 ) 31 32 func newRepoListCmd(out io.Writer) *cobra.Command { 33 var outfmt output.Format 34 cmd := &cobra.Command{ 35 Use: "list", 36 Aliases: []string{"ls"}, 37 Short: "list chart repositories", 38 Args: require.NoArgs, 39 ValidArgsFunction: noCompletions, 40 RunE: func(cmd *cobra.Command, args []string) error { 41 f, _ := repo.LoadFile(settings.RepositoryConfig) 42 if len(f.Repositories) == 0 && !(outfmt == output.JSON || outfmt == output.YAML) { 43 return errors.New("no repositories to show") 44 } 45 46 return outfmt.Write(out, &repoListWriter{f.Repositories}) 47 }, 48 } 49 50 bindOutputFlag(cmd, &outfmt) 51 52 return cmd 53 } 54 55 type repositoryElement struct { 56 Name string `json:"name"` 57 URL string `json:"url"` 58 } 59 60 type repoListWriter struct { 61 repos []*repo.Entry 62 } 63 64 func (r *repoListWriter) WriteTable(out io.Writer) error { 65 table := uitable.New() 66 table.AddRow("NAME", "URL") 67 for _, re := range r.repos { 68 table.AddRow(re.Name, re.URL) 69 } 70 return output.EncodeTable(out, table) 71 } 72 73 func (r *repoListWriter) WriteJSON(out io.Writer) error { 74 return r.encodeByFormat(out, output.JSON) 75 } 76 77 func (r *repoListWriter) WriteYAML(out io.Writer) error { 78 return r.encodeByFormat(out, output.YAML) 79 } 80 81 func (r *repoListWriter) encodeByFormat(out io.Writer, format output.Format) error { 82 // Initialize the array so no results returns an empty array instead of null 83 repolist := make([]repositoryElement, 0, len(r.repos)) 84 85 for _, re := range r.repos { 86 repolist = append(repolist, repositoryElement{Name: re.Name, URL: re.URL}) 87 } 88 89 switch format { 90 case output.JSON: 91 return output.EncodeJSON(out, repolist) 92 case output.YAML: 93 return output.EncodeYAML(out, repolist) 94 } 95 96 // Because this is a non-exported function and only called internally by 97 // WriteJSON and WriteYAML, we shouldn't get invalid types 98 return nil 99 } 100 101 // Returns all repos from repos, except those with names matching ignoredRepoNames 102 // Inspired by https://stackoverflow.com/a/28701031/893211 103 func filterRepos(repos []*repo.Entry, ignoredRepoNames []string) []*repo.Entry { 104 // if ignoredRepoNames is nil, just return repo 105 if ignoredRepoNames == nil { 106 return repos 107 } 108 109 filteredRepos := make([]*repo.Entry, 0) 110 111 ignored := make(map[string]bool, len(ignoredRepoNames)) 112 for _, repoName := range ignoredRepoNames { 113 ignored[repoName] = true 114 } 115 116 for _, repo := range repos { 117 if _, removed := ignored[repo.Name]; !removed { 118 filteredRepos = append(filteredRepos, repo) 119 } 120 } 121 122 return filteredRepos 123 } 124 125 // Provide dynamic auto-completion for repo names 126 func compListRepos(prefix string, ignoredRepoNames []string) []string { 127 var rNames []string 128 129 f, err := repo.LoadFile(settings.RepositoryConfig) 130 if err == nil && len(f.Repositories) > 0 { 131 filteredRepos := filterRepos(f.Repositories, ignoredRepoNames) 132 for _, repo := range filteredRepos { 133 rNames = append(rNames, fmt.Sprintf("%s\t%s", repo.Name, repo.URL)) 134 } 135 } 136 return rNames 137 }