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|
(* virt-sysprep
* Copyright (C) 2012 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*)
open Utils
open Printf
type flag = [ `Created_files ]
type operation = {
name : string;
pod_description : string;
extra_args : ((Arg.key * Arg.spec * Arg.doc) * string) list;
perform : Guestfs.guestfs -> string -> flag list;
}
let ops = ref []
module OperationSet = Set.Make (
struct
type t = operation
let compare a b = compare a.name b.name
end
)
type set = OperationSet.t
let empty_set = OperationSet.empty
let add_to_set name set =
let op = List.find (fun { name = n } -> name = n) !ops in
OperationSet.add op set
let register_operation op = ops := op :: !ops
let baked = ref false
let rec bake () =
let ops' = List.sort (fun { name = a } { name = b } -> compare a b) !ops in
check_no_dupes ops';
List.iter check ops';
ops := ops';
baked := true
and check_no_dupes ops =
ignore (
List.fold_left (
fun opset op ->
if OperationSet.mem op opset then (
eprintf "virt-sysprep: duplicate operation name (%s)\n" op.name;
exit 1
);
add_to_set op.name opset
) empty_set ops
)
and check op =
let n = String.length op.name in
if n = 0 then (
eprintf "virt-sysprep: operation name is an empty string\n";
exit 1;
);
for i = 0 to n-1 do
match String.unsafe_get op.name i with
| 'a'..'z' | 'A'..'Z' | '0'..'9' | '-' -> ()
| c ->
eprintf "virt-sysprep: disallowed character (%c) in operation name\n" c;
exit 1
done;
let n = String.length op.pod_description in
if n = 0 then (
eprintf "virt-sysprep: operation %s has no POD\n" op.name;
exit 1
);
if op.pod_description.[n-1] = '\n' then (
eprintf "virt-sysprep: POD for %s must not end with newline\n" op.name;
exit 1
)
let extra_args () =
assert !baked;
List.flatten (
List.map (fun { extra_args = extra_args } ->
List.map fst extra_args
) !ops
)
(* These internal functions are used to generate the man page. *)
let dump_pod () =
assert !baked;
List.iter (
fun op ->
printf "=head2 B<%s>\n" op.name;
printf "\n";
printf "%s\n\n" op.pod_description
) !ops
let dump_pod_options () =
assert !baked;
let args = List.map (
fun { name = op_name; extra_args = extra_args } ->
List.map (fun ea -> op_name, ea) extra_args
) !ops in
let args = List.flatten args in
let args = List.map (
fun (op_name, ((arg_name, spec, _), pod)) ->
match spec with
| Arg.Unit _
| Arg.Bool _
| Arg.Set _
| Arg.Clear _ ->
let heading = sprintf "B<%s>" arg_name in
arg_name, (op_name, heading, pod)
| Arg.String _
| Arg.Set_string _
| Arg.Int _
| Arg.Set_int _
| Arg.Float _
| Arg.Set_float _ ->
let heading = sprintf "B<%s> %s" arg_name (skip_dashes arg_name) in
arg_name, (op_name, heading, pod)
| Arg.Tuple _
| Arg.Symbol _
| Arg.Rest _ -> assert false (* XXX not implemented *)
) args in
let args = List.sort (
fun (a, _) (b, _) ->
compare (skip_dashes a) (skip_dashes b)
) args in
List.iter (
fun (arg_name, (op_name, heading, pod)) ->
printf "=item %s\n" heading;
printf "(see C<%s> below)\n" op_name;
printf "\n";
printf "%s\n\n" pod
) args
let list_operations () =
assert !baked;
(* For compatibility with old shell version, list just the operation
* names, sorted.
*)
List.iter (fun op -> print_endline op.name ) !ops
let perform_operations ?operations ?(quiet = false) g root =
assert !baked;
let ops =
match operations with
| None -> !ops (* all operations *)
| Some opset -> (* just the operation names listed *)
OperationSet.elements opset in
let flags =
List.map (
fun op ->
if not quiet then
printf "Performing %S ...\n%!" op.name;
op.perform g root
) ops in
List.flatten flags
|
