%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(docgen_xmerl_xml_cb).
%% This is the callback module for exporting XHTML to an
%% erlref or chapter document in XML format.
%% See docgen_edoc_xml_cb.erl for further information.
%%
%% The origin of this file is the xmerl module xmerl_otpsgml.erl
%% written by Ulf Wiger and Richard Carlsson.
-export(['#xml-inheritance#'/0]).
-export(['#root#'/4,
'#element#'/5,
'#text#'/1]).
-include("xmerl.hrl").
'#xml-inheritance#'() ->
[xmerl_xml].
'#root#'(Data, Attrs, [], _E) ->
Encoding =
case [E || #xmlAttribute{name = encoding, value = E} <- Attrs] of
[E] -> E;
_ -> atom_to_list(epp:default_encoding())
end,
["<",DTD,">"] = hd(hd(Data)),
["<?xml version=\"1.0\" encoding=\"",Encoding,"\" ?>\n",
"<!DOCTYPE "++DTD++" SYSTEM \""++DTD++".dtd\">\n",
Data].
'#element#'(Tag, Data, Attrs, _Parents, _E) ->
{NewTag, NewAttrs} = convert_tag(Tag, Attrs),
xmerl_lib:markup(NewTag, NewAttrs, Data).
'#text#'(Text) ->
xmerl_lib:export_text(Text).
%% Utility functions
convert_tag(a, [Attr]) ->
case Attr#xmlAttribute.name of
href ->
Val = Attr#xmlAttribute.value,
case is_url(Val) of
true ->
{url, [Attr]};
false ->
{seealso, [Attr#xmlAttribute{name=marker}]}
end;
name ->
{marker, [Attr#xmlAttribute{name=id}]}
end;
convert_tag(b, Attrs) -> {em, Attrs};
convert_tag(blockquote, Attrs) -> {quote, Attrs};
convert_tag(code, Attrs) -> {c, Attrs};
convert_tag(dd, Attrs) -> {item, Attrs};
convert_tag(dl, Attrs) -> {taglist, Attrs};
convert_tag(dt, Attrs) -> {tag, Attrs};
convert_tag(li, Attrs) -> {item, Attrs};
convert_tag(ol, Attrs) -> {list, Attrs};
convert_tag(strong, Attrs) -> {em, Attrs};
convert_tag(td, Attrs) -> {cell, Attrs};
convert_tag(tr, Attrs) -> {row, Attrs};
convert_tag(tt, Attrs) -> {c, Attrs};
convert_tag(ul, Attrs) -> {list, Attrs};
convert_tag(underline, Attrs) -> {em, Attrs};
convert_tag(Tag, Attrs) -> {Tag, Attrs}.
is_url("http:"++_) -> true;
is_url("https:"++_) -> true;
is_url("../"++_) -> true;
is_url(FileRef) ->
case filename:extension(FileRef) of
"" -> false; % no extension = xml file
_Ext -> true % extension
end.
