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#!/usr/bin/env escript
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%% -*- mode: erlang -*-
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-export([main/1]).
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%% @doc Script used to generate mochiweb_charref.erl table.
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main(_) ->
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application:start(inets),
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code:add_patha("ebin"),
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{ok, {_, _, HTML}} = httpc:request("http://www.w3.org/TR/html5/named-character-references.html"),
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print(lists:sort(search(mochiweb_html:parse(HTML)))).
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print([F | T]) ->
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io:put_chars([clause(F), ";\n"]),
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print(T);
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print([]) ->
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io:put_chars(["entity(_) -> undefined.\n"]),
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ok.
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clause({Title, [Codepoint]}) ->
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["entity(\"", Title, "\") -> 16#", Codepoint];
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clause({Title, [First | Rest]}) ->
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["entity(\"", Title, "\") -> [16#", First,
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[[", 16#", Codepoint] || Codepoint <- Rest],
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"]"].
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search(Elem) ->
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search(Elem, []).
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search({<<"tr">>, [{<<"id">>, <<"entity-", _/binary>>} | _], Children}, Acc) ->
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%% HTML5 charrefs can have more than one code point(!)
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[{<<"td">>, _, [{<<"code">>, _, [TitleSemi]}]},
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{<<"td">>, [], [RawCPs]} | _] = Children,
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L = byte_size(TitleSemi) - 1,
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<<Title:L/binary, $;>> = TitleSemi,
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{match, Matches} = re:run(RawCPs, "(?:\\s*U\\+)([a-fA-F0-9]+)",
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[{capture, all, binary}, global]),
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[{Title, [CP || [_, CP] <- Matches]} | Acc];
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search({Tag, Attrs, [H | T]}, Acc) ->
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search({Tag, Attrs, T}, search(H, Acc));
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search({_Tag, _Attrs, []}, Acc) ->
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Acc;
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search(<<_/binary>>, Acc) ->
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Acc.
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