kubernetes help 源码
kubernetes help 代码
文件路径：/staging/src/k8s.io/kubectl/pkg/cmd/help/help.go
/*
Copyright 2016 The Kubernetes Authors.
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 help
import (
"strings"
"github.com/spf13/cobra"
"k8s.io/kubectl/pkg/util/i18n"
"k8s.io/kubectl/pkg/util/templates"
)
var helpLong = templates.LongDesc(i18n.T(`
Help provides help for any command in the application.
Simply type kubectl help [path to command] for full details.`))
// NewCmdHelp returns the help Cobra command
func NewCmdHelp() *cobra.Command {
cmd := &cobra.Command{
Use: "help [command] | STRING_TO_SEARCH",
DisableFlagsInUseLine: true,
Short: i18n.T("Help about any command"),
Long: helpLong,
Run: RunHelp,
}
return cmd
}
// RunHelp checks given arguments and executes command
func RunHelp(cmd *cobra.Command, args []string) {
foundCmd, _, err := cmd.Root().Find(args)
// NOTE(andreykurilin): actually, I did not find any cases when foundCmd can be nil,
// but let's make this check since it is included in original code of initHelpCmd
// from github.com/spf13/cobra
if foundCmd == nil {
cmd.Printf("Unknown help topic %#q.\n", args)
cmd.Root().Usage()
} else if err != nil {
// print error message at first, since it can contain suggestions
cmd.Println(err)
argsString := strings.Join(args, " ")
var matchedMsgIsPrinted = false
for _, foundCmd := range foundCmd.Commands() {
if strings.Contains(foundCmd.Short, argsString) {
if !matchedMsgIsPrinted {
cmd.Printf("Matchers of string '%s' in short descriptions of commands: \n", argsString)
matchedMsgIsPrinted = true
}
cmd.Printf(" %-14s %s\n", foundCmd.Name(), foundCmd.Short)
}
}
if !matchedMsgIsPrinted {
// if nothing is found, just print usage
cmd.Root().Usage()
}
} else {
if len(args) == 0 {
// help message for help command :)
foundCmd = cmd
}
helpFunc := foundCmd.HelpFunc()
helpFunc(foundCmd, args)
}
}
相关信息
相关文章
kubernetes apiserver_etcd_test 源码
kubernetes apiserver_kms_test 源码
kubernetes append_or_replace_prefixed_line_test 源码
kubernetes audit_policy_test 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦