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edit.go
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edit.go
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// Copyright 2020 Marek Dalewski
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"context"
"fmt"
"os"
"os/exec"
"github.com/spf13/cobra"
"github.com/daishe/kubeconfig/cmd/ui"
"github.com/daishe/kubeconfig/registry"
)
const editLong = `Enables editition of a new kubectl config file to kubeconfig registry, by
creating a new empty file with the provided name and opening editor described by
the ${EDITOR} environment variable.
If the kubectl config file is not specified, the command presents an interactive
list of all files in the registry with an option to select one.`
// newEditCmd generates a new edit command.
func newEditCmd(global *rootOpts) *cobra.Command {
o := &editOpts{}
cmd := &cobra.Command{
Use: "edit [name of new config]",
Short: "Edit a new kubectl config file",
Long: editLong,
Aliases: []string{"new", "create"},
Args: cobra.MaximumNArgs(1),
Run: func(cmd *cobra.Command, args []string) {
o.interactive = true
if len(args) > 0 {
o.name = args[0]
o.interactive = false
}
editRun(cmd.Context(), global, o)
},
}
cmd.Flags().StringVarP(&o.editor, "editor", "e", "", "sets the editor used directly, instead of using the ${EDITOR} environment variable")
return cmd
}
type editOpts struct {
name string
editor string
interactive bool
}
func editRun(ctx context.Context, g *rootOpts, o *editOpts) {
editor := o.editor
if editor == "" {
e, ok := os.LookupEnv("EDITOR")
if !ok {
ui.DisplayAndExitOnError(fmt.Errorf("$EDITOR environment vatiabble not set"))
}
editor = e
}
reg, err := g.regPath()
ui.DisplayAndExitOnError(err)
path := ""
if o.interactive {
kcCfgPath, err := registry.KubectlConfigPath()
ui.DisplayAndExitOnError(err)
kcCfgHash, err := registry.Hash(kcCfgPath)
ui.DisplayAndExitOnError(err)
path, err = ui.SelectPrompt(reg, "Which kubectl config file to edit", kcCfgHash)
ui.DisplayAndExitOnError(err)
} else {
path = registry.NameToPath(reg, o.name)
}
cmd := exec.CommandContext(ctx, editor, path)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
ui.DisplayAndExitOnError(fmt.Errorf("starting editor %q failed: %w", editor, err))
}
if err := cmd.Wait(); err != nil {
ui.DisplayAndExitOnError(fmt.Errorf("editor %q failed: %w", editor, err))
}
}