Method Run

pkg/cmd/util/editor/editoptions.go:234–467

Run performs the execution

()

// Run performs the execution
func (o *EditOptions) Run() error {
	edit := NewDefaultEditor(editorEnvs())
	// editFn is invoked for each edit session (once with a list for normal edit, once for each individual resource in a edit-on-create invocation)
	editFn := func(infos []*resource.Info) error {
		var (
			results  = editResults{}
			original = []byte{}
			edited   = []byte{}
			file     string
			err      error
		)

		containsError := false
		// loop until we succeed or cancel editing
		for {
			// get the object we're going to serialize as input to the editor
			var originalObj runtime.Object
			switch len(infos) {
			case 1:
				originalObj = infos[0].Object
			default:
				l := &unstructured.UnstructuredList{
					Object: map[string]interface{}{
						"kind":       "List",
						"apiVersion": "v1",
						"metadata":   map[string]interface{}{},
					},
				}
				for _, info := range infos {
					l.Items = append(l.Items, *info.Object.(*unstructured.Unstructured))
				}
				originalObj = l
			}

			// generate the file to edit
			buf := &bytes.Buffer{}
			var w io.Writer = buf
			if o.WindowsLineEndings {
				w = crlf.NewCRLFWriter(w)
			}

			if o.editPrinterOptions.addHeader {
				results.header.writeTo(w, o.EditMode)
			}

			if !containsError {
				if err := o.extractManagedFields(originalObj); err != nil {
					return preservedFile(err, results.file, o.ErrOut)
				}

				if err := o.editPrinterOptions.PrintObj(originalObj, w); err != nil {
					return preservedFile(err, results.file, o.ErrOut)
				}
				original = buf.Bytes()
			} else {
				// In case of an error, preserve the edited file.
				// Remove the comments (header) from it since we already
				// have included the latest header in the buffer above.