78 lines
1.5 KiB
Go
78 lines
1.5 KiB
Go
package cmd
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import (
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"fmt"
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"strings"
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"go.fifitido.net/cmd/opt"
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)
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func (c *Command) ShowHelp() {
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cmdPath := c.CommandPath()
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binaryName := c.Root().Name
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fmt.Println(c.LongDescription)
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fmt.Println()
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fmt.Println("Usage: ")
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fmt.Printf(" %s %s ", binaryName, cmdPath)
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if len(c.Subcommands) > 0 {
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if c.CanRun() {
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fmt.Print("[command] ")
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} else {
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fmt.Print("<command> ")
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}
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}
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fmt.Print("[options]")
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if len(c.Args) > 0 {
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for _, a := range c.Args {
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if a.Required {
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fmt.Print(" <" + a.Name + ">")
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} else {
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fmt.Print(" [" + a.Name + "]")
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}
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}
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}
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fmt.Println()
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if len(c.Subcommands) > 0 {
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fmt.Println()
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if c.isRoot {
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fmt.Println("Available commands:")
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} else {
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fmt.Println("Available subcommands:")
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}
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paddedWidth := c.Subcommands.MaxWidth()
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for _, s := range c.Subcommands {
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spaceSize := 2 + paddedWidth - len(s.Name)
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fmt.Println(" " + s.Name + strings.Repeat(" ", spaceSize) + s.ShortDescription)
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}
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}
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if len(c.Opts) > 0 {
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fmt.Println()
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fmt.Println("Available options:")
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paddedWidth := c.Opts.MaxWidth()
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for _, f := range c.Opts {
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fmt.Println(" " + opt.HelpLine(f, paddedWidth))
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}
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}
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globalOpts := opt.Globals()
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if len(globalOpts) > 0 {
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fmt.Println()
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fmt.Println("Global options:")
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paddedWidth := globalOpts.MaxWidth()
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for _, f := range globalOpts {
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fmt.Println(" " + opt.HelpLine(f, paddedWidth))
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}
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}
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if len(c.Subcommands) > 0 {
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fmt.Println()
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fmt.Printf("Run '%s <command> --help' for more information about a command.\n", binaryName)
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}
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}
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