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(** Wrapper around Perl [HTML::Element] class. *)
(* Copyright (C) 2003 Merjis Ltd.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU General Public License
along with this library; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
$Id: pl_HTML_Element.ml,v 1.5 2008-03-01 13:02:21 rich Exp $
*)
open Perl
let _ = eval "use HTML::Element"
type 'a content_t = Element of 'a | String of string
class html_element sv =
let rec assocs_of_svlist = function
[] -> []
| [x] -> failwith "HTML::Element all_attr returned odd-length list!"
| svname :: svvalue :: xs ->
(string_of_sv svname, string_of_sv svvalue) :: assocs_of_svlist xs
in
let rec list_of_svlist = function
[] -> []
| sv :: xs ->
string_of_sv sv :: list_of_svlist xs
in
object (self)
method sv = sv
method attr name =
string_of_sv (call_method sv "attr" [sv_of_string name])
method set_attr name value =
call_method_void sv "attr" [sv_of_string name; sv_of_string value]
method tag =
string_of_sv (call_method sv "tag" [])
method set_tag tag =
call_method_void sv "tag" [sv_of_string tag]
method parent =
let sv = call_method sv "parent" [] in
new html_element sv
method set_parent (parent : html_element) =
call_method_void sv "parent" [parent#sv]
method content_list =
let svlist = call_method_array sv "content_list" [] in
List.map
(fun c ->
(* Not very satisfactory, but sv_type fails to discern the type
* for some reason. XXX
*)
let str = string_of_sv c in
let marker = "HTML::Element=HASH(" in
let marker_len = String.length marker in
if String.length str > marker_len &&
String.sub str 0 marker_len = marker then
Element (new html_element c)
else
String (string_of_sv c)
) svlist
method all_attr =
let svlist = call_method_array sv "all_attr" [] in
assocs_of_svlist svlist
method all_attr_names =
let svlist = call_method_array sv "all_attr_names" [] in
list_of_svlist svlist
method all_external_attr =
let svlist = call_method_array sv "all_external_attr" [] in
assocs_of_svlist svlist
method all_external_attr_names =
let svlist = call_method_array sv "all_external_attr_names" [] in
list_of_svlist svlist
end
(* Note that "new" is a reserved word, so I've appended an _ character. *)
let new_ tag attrs =
let rec loop = function
[] -> []
| (name, value) :: xs -> sv_of_string name :: sv_of_string value :: loop xs
in
let sv = call_class_method "HTML::Element" "new"
(sv_of_string tag :: loop attrs) in
new html_element sv
|
