94 lines
2.2 KiB
Erlang
94 lines
2.2 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : xml.erl
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%%% Author : Alexey Shchepin <alexey@sevcom.net>
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%%% Purpose : XML utils
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%%% Created : 20 Nov 2002 by Alexey Shchepin <alexey@sevcom.net>
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%%% Id : $Id$
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%%%----------------------------------------------------------------------
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-module(xml).
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-author('alexey@sevcom.net').
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-vsn('$Revision$ ').
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-export([element_to_string/1, crypt/1, remove_cdata/1, get_cdata/1,
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get_attr/2, get_attr_s/2]).
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element_to_string(El) ->
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case El of
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{xmlelement, Name, Attrs, Els} ->
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if length(Els) > 0 ->
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"<" ++ Name ++ attrs_to_string(Attrs) ++ ">" ++
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lists:append(
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lists:map(fun(E) -> element_to_string(E) end, Els))
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++ "</" ++ Name ++ ">";
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true ->
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"<" ++ Name ++ attrs_to_string(Attrs) ++ "/>"
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end;
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{xmlcdata, CData} -> crypt(CData)
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end.
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attrs_to_string(Attrs) ->
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lists:append(lists:map(fun(A) -> attr_to_string(A) end, Attrs)).
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attr_to_string({Name, Value}) ->
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" " ++ crypt(Name) ++ "='" ++ crypt(Value) ++ "'".
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crypt(S) ->
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lists:reverse(crypt(S, "")).
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crypt([$& | S], R) ->
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crypt(S, [$;, $p, $m, $a, $& | R]);
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crypt([$< | S], R) ->
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crypt(S, [$;, $t, $l, $& | R]);
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crypt([$> | S], R) ->
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crypt(S, [$;, $t, $g, $& | R]);
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crypt([$" | S], R) ->
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crypt(S, [$;, $t, $o, $u, $q, $& | R]);
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crypt([$' | S], R) ->
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crypt(S, [$;, $s, $o, $p, $a, $& | R]);
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crypt([C | S], R) ->
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crypt(S, [C | R]);
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crypt([], R) ->
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R.
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remove_cdata(L) ->
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lists:reverse(remove_cdata(L, [])).
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remove_cdata([{xmlelement, Name, Attrs, Els} | L], R) ->
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remove_cdata(L, [{xmlelement, Name, Attrs, Els} | R]);
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remove_cdata([{xmlcdata, CData} | L], R) ->
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remove_cdata(L, R);
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remove_cdata([], R) ->
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R.
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get_cdata(L) ->
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get_cdata(L, "").
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get_cdata([{xmlcdata, CData} | L], S) ->
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get_cdata(L, S ++ CData);
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get_cdata([_ | L], S) ->
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get_cdata(L, S);
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get_cdata([], S) ->
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S.
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get_attr(AttrName, Attrs) ->
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case lists:keysearch(AttrName, 1, Attrs) of
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{value, {_, Val}} ->
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{value, Val};
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_ ->
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false
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end.
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get_attr_s(AttrName, Attrs) ->
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case lists:keysearch(AttrName, 1, Attrs) of
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{value, {_, Val}} ->
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Val;
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_ ->
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""
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end.
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