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help.go
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/
help.go
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package main
import (
"fmt"
"github.com/spf13/cobra"
)
var helpCmd = &cobra.Command{
Use: "help",
Short: "Help about commands, build targets, and build arguments",
Args: cobra.ArbitraryArgs,
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) != 1 {
return rootCmd.Help()
}
for _, c := range rootCmd.Commands() {
if c.Name() == args[0] || c.CalledAs() == args[0] {
return c.Help()
}
}
label, args, err := work.labelArg(args)
if err != nil {
return err
}
if err := work.loadProject(args, true, false); err != nil {
return err
}
target, err := work.target(label)
if err != nil {
return err
}
doc := target.Doc()
if doc == "" {
fmt.Printf("No help for %v\n", label)
return nil
}
fmt.Println(target.Label())
fmt.Println(target.Doc())
return nil
},
ValidArgsFunction: func(cmd *cobra.Command, args []string, completing string) ([]string, cobra.ShellCompDirective) {
topics := []string{"usage"}
for _, c := range rootCmd.Commands() {
if !c.Hidden {
topics = append(topics, c.Name(), c.CalledAs())
}
}
labels, _ := work.validLabels(cmd, args, completing)
topics = append(topics, labels...)
return topics, cobra.ShellCompDirectiveDefault
},
}