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Use a single wrapper binary for all command line tools

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This is because Go has a multi megabyte overhead for its binaries
This commit is contained in:
Kovid Goyal
2022-08-15 08:16:00 +05:30
parent abaafc2d68
commit aaf0dea8dc
5 changed files with 60 additions and 36 deletions
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44
tools/cli/infrastructure.go
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@@ -88,16 +88,8 @@ var yellow_fmt = color.New(color.FgYellow).SprintFunc()
var blue_fmt = color.New(color.FgBlue).SprintFunc()
var green_fmt = color.New(color.FgGreen).SprintFunc()
func cmd_name(cmd *cobra.Command) string {
if cmd.Annotations != nil {
parts := strings.Split(cmd.Annotations["exe"], " ")
return parts[len(parts)-1]
}
return cmd.Name()
}
func print_created_by(root *cobra.Command) {
fmt.Println(italic_fmt(root.Annotations["exe"]), opt_fmt(root.Version), "created by", title_fmt("Kovid Goyal"))
fmt.Println(italic_fmt(root.Name()), opt_fmt(root.Version), "created by", title_fmt("Kovid Goyal"))
}
func print_line_with_indent(text string, indent string, screen_width int) {
@@ -238,7 +230,17 @@ func show_usage(cmd *cobra.Command) error {
if tty_size_err == nil && ws.Cols < 80 {
screen_width = int(ws.Cols)
}
fmt.Println(title_fmt("Usage")+":", exe_fmt(cmd.Annotations["exe"]), cmd.Use)
use := cmd.Use
idx := strings.Index(use, " ")
if idx > -1 {
use = use[idx + 1:]
}
var parent_names []string
cmd.VisitParents(func(p *cobra.Command) {
parent_names = append(parent_names, p.Name())
})
parent_names = append(parent_names, cmd.Name())
fmt.Println(title_fmt("Usage")+":", exe_fmt(strings.Join(parent_names, " ")), use)
fmt.Println()
if len(cmd.Long) > 0 {
print_with_indent(cmd.Long, "", screen_width)
@@ -249,12 +251,12 @@ func show_usage(cmd *cobra.Command) error {
fmt.Println()
fmt.Println(title_fmt("Commands") + ":")
for _, child := range cmd.Commands() {
fmt.Println(" ", opt_fmt(cmd_name(child)))
fmt.Println(" ", opt_fmt(child.Name()))
print_with_indent(child.Short, " ", screen_width)
}
fmt.Println()
print_with_indent("Get help for an individual command by running:", "", screen_width)
fmt.Println(" ", cmd.Annotations["exe"], italic_fmt("command"), "-h")
fmt.Println(" ", cmd.Name(), italic_fmt("command"), "-h")
}
if cmd.HasAvailableFlags() {
options_title := cmd.Annotations["options_title"]
@@ -272,7 +274,9 @@ func show_usage(cmd *cobra.Command) error {
defval := ""
switch flag.Value.Type() {
default:
defval = fmt.Sprintf("[=%s]", italic_fmt(flag.DefValue))
if (flag.DefValue != "") {
defval = fmt.Sprintf("[=%s]", italic_fmt(flag.DefValue))
}
case "bool":
case "count":
}
@@ -285,7 +289,7 @@ func show_usage(cmd *cobra.Command) error {
case "help":
msg = "Print this help message"
case "version":
msg = "Print the version of " + RootCmd.Annotations["exe"] + ": " + italic_fmt(RootCmd.Version)
msg = "Print the version of " + RootCmd.Name() + ": " + italic_fmt(RootCmd.Version)
}
print_with_indent(msg, " ", screen_width)
if cmd.Annotations["choices-"+flag.Name] != "" {
@@ -307,12 +311,20 @@ func show_usage(cmd *cobra.Command) error {
return nil
}
func CreateCommand(cmd *cobra.Command, exe string) *cobra.Command {
func CreateCommand(cmd *cobra.Command) *cobra.Command {
cmd.Annotations = make(map[string]string)
cmd.Annotations["exe"] = exe
if cmd.Run == nil {
cmd.Run = SubCommandRequired
}
return cmd
}
func SubCommandRequired(cmd *cobra.Command, args []string) {
cmd.Usage()
fmt.Fprintln(os.Stderr, color.RedString("\nNo command specified for "+cmd.Name()))
os.Exit(1)
}
func Init(root *cobra.Command) {
RootCmd = root
root.Version = kitty.VersionString