75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
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// Copyright © 2022 Roberto Hidalgo <chinampa@un.rob.mx>
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// SPDX-License-Identifier: Apache-2.0
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package commands
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import (
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"fmt"
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"os"
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"strings"
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_c "git.rob.mx/nidito/chinampa/internal/constants"
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"git.rob.mx/nidito/chinampa/pkg/env"
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"git.rob.mx/nidito/chinampa/pkg/runtime"
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"git.rob.mx/nidito/chinampa/pkg/statuscode"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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var Help = &cobra.Command{
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Use: _c.HelpCommandName + " [command]",
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Short: "Display usage information for any command",
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Long: `Help provides the valid arguments and options for any command known to ` + runtime.Executable + `. By default, ﹅` + runtime.Executable + ` help﹅ will query the environment variable ﹅COLORFGBG﹅ to decide which style to use when rendering help, except if ﹅` + env.HelpUnstyled + `﹅ is set. Valid styles are: **light**, **dark**, and **auto**.`,
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ValidArgsFunction: func(c *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
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var completions []string
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cmd, _, e := c.Root().Find(args)
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if e != nil {
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return nil, cobra.ShellCompDirectiveNoFileComp
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}
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if cmd == nil {
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// Root help command.
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cmd = c.Root()
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}
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for _, subCmd := range cmd.Commands() {
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if subCmd.IsAvailableCommand() || subCmd.Name() == _c.HelpCommandName {
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if strings.HasPrefix(subCmd.Name(), toComplete) {
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completions = append(completions, fmt.Sprintf("%s\t%s", subCmd.Name(), subCmd.Short))
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}
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}
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}
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return completions, cobra.ShellCompDirectiveNoFileComp
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},
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Run: func(c *cobra.Command, args []string) {
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cmd, _, e := c.Root().Find(args)
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if cmd == nil || e != nil || (len(args) > 0 && cmd != nil && cmd.Name() != args[len(args)-1]) {
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if cmd == nil {
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err := c.Root().Help()
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if err != nil {
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logrus.Error(err)
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os.Exit(statuscode.ProgrammerError)
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}
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logrus.Errorf("Unknown help topic %s", args)
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os.Exit(statuscode.NotFound)
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} else {
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err := cmd.Help()
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if err != nil {
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logrus.Error(err)
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os.Exit(statuscode.ProgrammerError)
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}
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if len(args) > 1 {
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logrus.Errorf("Unknown help topic %s for %s", args[1], args[0])
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} else {
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logrus.Errorf("Unknown help topic %s for %s", runtime.Executable, args[0])
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}
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os.Exit(statuscode.NotFound)
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}
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} else {
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cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown
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cobra.CheckErr(cmd.Help())
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}
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os.Exit(statuscode.RenderHelp)
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},
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}
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