func main() {
flag.Usage = usage
flag.Parse()
log.SetFlags(0)
args := flag.Args()
if len(args) < 1 {
usage()
}
if args[0] == "help" {
help(args[1:])
return
}
for _, cmd := range commands {
if cmd.Name() == args[0] && cmd.Run != nil {
cmd.Flag.Usage = func() { cmd.Usage() }
if cmd.CustomFlags {
args = args[1:]
} else {
cmd.Flag.Parse(args[1:])
args = cmd.Flag.Args()
}
os.Exit(cmd.Run(cmd, args))
}
}
}
func help(args []string) {
if len(args) == 0 {
usage()
return
}
if len(args) != 1 {
fmt.Fprintf(os.Stdout, "usage: hg help command\n\nToo many arguments given.\n")
os.Exit(0)
}
arg := args[0]
for _, cmd := range commands {
if cmd.Name() == arg {
utils.Tmpl(os.Stdout, template.HelpTemplate, cmd)
return
}
}
fmt.Fprintf(os.Stdout, "Unknown help topic %#q. Run 'hg help'.\n", arg)
os.Exit(0)
}