mirror of
https://github.com/ahmetb/kubectx.git
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b5daf2cef7
* feat(kubens): added force flag to switch namespaces even if it doesn't exist * Merged lines * fixed README.md and flags.go * updated flags.go, flags_test.go
85 lines
2.0 KiB
Go
85 lines
2.0 KiB
Go
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"fmt"
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"io"
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"os"
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"slices"
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"strings"
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"github.com/ahmetb/kubectx/internal/cmdutil"
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)
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// UnsupportedOp indicates an unsupported flag.
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type UnsupportedOp struct{ Err error }
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func (op UnsupportedOp) Run(_, _ io.Writer) error {
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return op.Err
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}
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// parseArgs looks at flags (excl. executable name, i.e. argv[0])
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// and decides which operation should be taken.
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func parseArgs(argv []string) Op {
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n := len(argv)
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if n == 0 {
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if cmdutil.IsInteractiveMode(os.Stdout) {
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return InteractiveSwitchOp{SelfCmd: os.Args[0]}
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}
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return ListOp{}
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}
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if n == 1 {
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v := argv[0]
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switch v {
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case "--help", "-h":
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return HelpOp{}
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case "--version", "-V":
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return VersionOp{}
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case "--current", "-c":
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return CurrentOp{}
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default:
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return getSwitchOp(v, false)
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}
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} else if n == 2 {
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// {namespace} -f|--force
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name := argv[0]
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force := slices.Contains([]string{"-f", "--force"}, argv[1])
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if !force {
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if !slices.Contains([]string{"-f", "--force"}, argv[0]) {
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return UnsupportedOp{Err: fmt.Errorf("unsupported arguments %q", argv)}
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}
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// -f|--force {namespace}
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force = true
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name = argv[1]
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}
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return getSwitchOp(name, force)
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}
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return UnsupportedOp{Err: fmt.Errorf("too many arguments")}
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}
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func getSwitchOp(v string, force bool) Op {
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if strings.HasPrefix(v, "-") && v != "-" {
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return UnsupportedOp{Err: fmt.Errorf("unsupported option %q", v)}
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}
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return SwitchOp{Target: v, Force: force}
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}
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