The R13B03 release.OTP_R13B03

1 files changed, 263 insertions, 0 deletions

diff --git a/lib/xmerl/src/xmerl_sax_simple_dom.erl b/lib/xmerl/src/xmerl_sax_simple_dom.erl
new file mode 100644
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+%%-*-erlang-*-
+%%--------------------------------------------------------------------
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%----------------------------------------------------------------------
+%% File    : xmerl_sax_simple_dom.erl
+%% Description : 
+%%
+%% Created : 17 Apr 2009 
+%%----------------------------------------------------------------------
+-module(xmerl_sax_simple_dom).
+
+%%----------------------------------------------------------------------
+%% Include files
+%%----------------------------------------------------------------------
+-include("xmerl_sax_old_dom.hrl").
+
+%%----------------------------------------------------------------------
+%% External exports
+%%----------------------------------------------------------------------
+-export([
+	 initial_state/0,
+	 get_dom/1,
+	 event/3
+        ]).
+
+%%----------------------------------------------------------------------
+%% Internal exports
+%%----------------------------------------------------------------------
+-export([
+        ]).
+
+%%======================================================================
+%% Macros
+%%======================================================================
+%%----------------------------------------------------------------------
+%% Error handling
+%%----------------------------------------------------------------------
+-define(error(Reason), 
+	throw({sax_simple_dom_error, Reason})).
+
+%%----------------------------------------------------------------------
+
+%%======================================================================
+%% Records
+%%======================================================================
+
+%%----------------------------------------------------------------------
+%% State record for the validator
+%%----------------------------------------------------------------------
+-record(xmerl_sax_simple_dom_state, {
+	  tags=[],         %% Tag stack
+	  cno=[],          %% Current node number
+	  namespaces = [], %% NameSpace stack
+	  dom=[]           %% DOM structure 
+	 }).
+
+%%======================================================================
+%% External functions
+%%======================================================================
+
+%%----------------------------------------------------------------------
+%% Function: initial_state() -> Result
+%% Parameters: 
+%% Result: 
+%% Description:
+%%----------------------------------------------------------------------
+initial_state() ->
+    #xmerl_sax_simple_dom_state{}.
+
+%%----------------------------------------------------------------------
+%% Function: get_dom(State) -> Result
+%% Parameters: 
+%% Result: 
+%% Description:
+%%----------------------------------------------------------------------
+get_dom(#xmerl_sax_simple_dom_state{dom=Dom}) ->
+    Dom.
+
+%%----------------------------------------------------------------------
+%% Function: event(Event, LineNo, State) -> Result
+%% Parameters: 
+%% Result: 
+%% Description:
+%%----------------------------------------------------------------------
+event(Event, _LineNo, State) ->
+    build_dom(Event, State).
+
+
+%%======================================================================
+%% Internal functions
+%%======================================================================
+
+%%----------------------------------------------------------------------
+%% Function  : build_dom(Event, State) -> Result
+%% Parameters: Event = term()
+%%             State = #xmerl_sax_simple_dom_state{}
+%% Result    : #xmerl_sax_simple_dom_state{} |
+%% Description: 
+%%----------------------------------------------------------------------
+
+%% Document
+%%----------------------------------------------------------------------
+build_dom(startDocument, State) ->
+    State#xmerl_sax_simple_dom_state{dom=[startDocument]};
+build_dom(endDocument, 
+	  #xmerl_sax_simple_dom_state{dom=[{Tag, Attributes, Content} |D]} = State) ->
+    case D of
+	[startDocument] ->
+	    State#xmerl_sax_simple_dom_state{dom=[{Tag, Attributes, 
+						   lists:reverse(Content)}]};
+	[#xmlDecl{} = Decl, startDocument] ->
+	    State#xmerl_sax_simple_dom_state{dom=[Decl, {Tag, Attributes, 
+						   lists:reverse(Content)}]};
+	_ ->
+	    io:format("~p\n", [D]),
+	    ?error("we're not at end the document when endDocument event is encountered.")
+    end;
+
+%% Element
+%%----------------------------------------------------------------------
+build_dom({startElement, _Uri, LocalName, _QName, Attributes}, 
+	  #xmerl_sax_simple_dom_state{tags=T, cno=CN, dom=D} = State) ->
+
+    A = parse_attributes(LocalName, Attributes),
+    {Num, NewCN} =
+	case CN of
+	    [] ->
+		{1, [1]};
+	    [ N |CNs] -> 
+		{N, [1, N+1 |CNs]}
+	end,
+
+    State#xmerl_sax_simple_dom_state{tags=[{list_to_atom(LocalName), Num} |T],
+				     cno=NewCN,
+				     dom=[{list_to_atom(LocalName), 
+					   lists:reverse(A),
+					   []
+					  } | D]};
+build_dom({endElement, _Uri, LocalName, _QName}, 
+	  #xmerl_sax_simple_dom_state{tags=[_ |T],
+				   cno=[_ |CN],
+				   dom=[{CName, CAttributes, CContent}, 
+					{PName, PAttributes, PContent} | D]} = State) ->
+    case list_to_atom(LocalName) of
+	CName ->	    
+	    State#xmerl_sax_simple_dom_state{tags=T,
+					     cno=CN,
+					     dom=[{PName, PAttributes, 
+						   [{CName, CAttributes, 
+						     lists:reverse(CContent)}
+						    |PContent]
+						  } | D]};
+	_ ->
+	    ?error("Got end of element: " ++ LocalName ++ " but expected: " ++ 
+		   CName)
+    end;
+
+%% Text 
+%%----------------------------------------------------------------------
+build_dom({characters, String},
+	  #xmerl_sax_simple_dom_state{tags=_T, 
+				      cno=[Num |CN],
+				      dom=[{Name, Attributes, Content}| D]} = State) ->
+    State#xmerl_sax_simple_dom_state{cno=[Num+1 |CN], 
+				     dom=[{Name, Attributes, [String|Content]} | D]};
+
+build_dom({ignorableWhitespace, String},
+	  #xmerl_sax_simple_dom_state{tags=T, 
+				   cno=[Num |CN],
+				   dom=[{Name, Attributes, Content}| D]} = State) ->
+    State#xmerl_sax_simple_dom_state{cno=[Num+1 |CN],
+				  dom=[{Name, Attributes, [#xmlText{value=String, parents=T, pos=Num, type=text}|Content]} | D]};
+
+%% Comments
+%%----------------------------------------------------------------------
+build_dom({comment, String},
+	  #xmerl_sax_simple_dom_state{tags=T, 
+				   cno=[Num |CN],
+				   dom=[#xmlElement{content=C} = Current| D]} = State) ->
+    State#xmerl_sax_simple_dom_state{cno=[Num+1 |CN],
+				  dom=[Current#xmlElement{content=[#xmlComment{parents=T, pos=Num, value=String}|C]} | D]};
+
+%% NameSpaces
+%%----------------------------------------------------------------------
+build_dom({startPrefixMapping, [], _Uri}, State) -> 
+    State;
+build_dom({startPrefixMapping, Prefix, Uri},
+	  #xmerl_sax_simple_dom_state{namespaces=NS} = State) -> 
+    State#xmerl_sax_simple_dom_state{namespaces=[{Prefix, list_to_atom(Uri)} |NS]};
+build_dom({endPrefixMapping, Prefix},
+	  #xmerl_sax_simple_dom_state{namespaces=[{Prefix, _} |NS]} = State) -> 
+    State#xmerl_sax_simple_dom_state{namespaces=NS};
+
+%% Processing instructions
+%%----------------------------------------------------------------------
+build_dom({processingInstruction,"xml", PiData},
+	  #xmerl_sax_simple_dom_state{dom=D} = State) ->
+    {Vsn, PiData1}  = find_and_remove_attribute("version", PiData, []),
+    {Enc, PiData2}  = find_and_remove_attribute("encoding", PiData1, []),
+    {Standalone, PiData3}  = find_and_remove_attribute("standalone", PiData2, yes),
+    State#xmerl_sax_simple_dom_state{dom=[#xmlDecl{vsn=Vsn, encoding=Enc, standalone=Standalone, attributes=PiData3}| D]};
+build_dom({processingInstruction, PiTarget, PiData},
+	  #xmerl_sax_simple_dom_state{cno=[Num |CN],
+				   dom=[#xmlElement{content=C} = Current| D]} = State) ->
+    State#xmerl_sax_simple_dom_state{cno=[Num+1 |CN], 
+				  dom=[Current#xmlElement{content=[#xmlPI{name=PiTarget,pos=Num, value=PiData}
+								   |C]} | D]};
+
+
+%% Default
+%%----------------------------------------------------------------------
+build_dom(_E, State) ->
+    State. 
+
+
+
+
+
+%%----------------------------------------------------------------------
+%% Function  : parse_attributes(ElName, Attributes) -> Result
+%% Parameters: 
+%% Result    : 
+%% Description: 
+%%----------------------------------------------------------------------
+parse_attributes(ElName, Attributes) ->
+    parse_attributes(ElName, Attributes, 1, []).
+
+parse_attributes(_, [], _, Acc) ->
+    Acc;
+parse_attributes(ElName, [{_Uri, _Prefix, LocalName, AttrValue} |As], N, Acc) ->  
+    parse_attributes(ElName, As, N+1, [{list_to_atom(LocalName), AttrValue} |Acc]).
+
+
+
+%%----------------------------------------------------------------------
+%% Function  : find_and_remove_attribute(Key, Data, Default) -> Result
+%% Parameters: 
+%% Result    : 
+%% Description: 
+%%----------------------------------------------------------------------
+find_and_remove_attribute(Key, Data, Default) ->
+    case lists:keysearch(Key, 1, Data) of
+	{value, {Key, Value}} ->
+	    Data2 = lists:keydelete(Key, 1, Data),
+	    {Value, Data2};
+	false ->
+	    {Default, Data}
+    end.