[syslinux] ROSH: bug or feature

[Pierre-Alexandre Meyer]

On Tuesday 24 March 2009 à 11:22:43PM, Pierre-Alexandre Meyer wrote:
> FWIW, we have been working with Erwan to improve the CLI of hdt. The new
> version will be merged post 3.74 release but you can have a look at my
> staging tree:
> 
> http://git.zytor.com/?p=users/pam/hdt-pierre.git;a=shortlog;h=refs/heads/for-erwan

A code snippet is worth...

Let's say you want to implement your own mode (let's call it gene):

$ set mode gene
... entering mode "gene" ...
$ show arg1 arg2
  --> will execute do_something_not_too_crazy(arc, argv)
$ show crazy arg1 arg2
  --> will execute do_something_crazy(arc, argv)
$ show crazy2 arg1 arg2
  --> will execute do_something_crazy2(arc, argv)

Note: "crazy" is an example of a "module" I was talking about.

You only need to implement the following structures:

struct cli_callback_descr list_gene_modules[] = {
   {
        .name = "crazy",
        .exec = do_something_crazy,
   },
   {
        .name = "crazy2",
        .exec = do_something_crazy2,
   },
};

struct cli_module_descr show_modules = {
       .modules = list_gene_modules,
       .nb_modules = 2,
       .default_callback = do_something_not_too_crazy,
};

struct cli_mode_descr gene_mode = {
       .mode = "gene",
       .show_modules = &show_modules,
};

The core will do the rest (and generate the help displaying available
functions, exit to quit this mode, ...).

The "show" command is something we use a lot in hdt, but you can imagine
whatever you want (ls, mkdir, ...).

-- 
Pierre-Alexandre Meyer