129 lines
3.8 KiB
Erlang
129 lines
3.8 KiB
Erlang
%% Created automatically by xdata generator (xdata_codec.erl)
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%% Source: flex_offline.xdata
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%% Form type: http://jabber.org/protocol/offline
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%% Document: XEP-0013
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-module(flex_offline).
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-export([decode/1, decode/2, encode/1, encode/2,
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format_error/1]).
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-include("xmpp_codec.hrl").
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-include("flex_offline.hrl").
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-export_type([property/0, result/0, form/0]).
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dec_int(Val, Min, Max) ->
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case list_to_integer(binary_to_list(Val)) of
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Int when Int =< Max, Min == infinity -> Int;
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Int when Int =< Max, Int >= Min -> Int
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end.
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enc_int(Int) -> integer_to_binary(Int).
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format_error({form_type_mismatch, Type}) ->
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<<"FORM_TYPE doesn't match '", Type/binary, "'">>;
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format_error({bad_var_value, Var, Type}) ->
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<<"Bad value of field '", Var/binary, "' of type '",
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Type/binary, "'">>;
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format_error({missing_value, Var, Type}) ->
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<<"Missing value of field '", Var/binary, "' of type '",
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Type/binary, "'">>;
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format_error({too_many_values, Var, Type}) ->
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<<"Too many values for field '", Var/binary,
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"' of type '", Type/binary, "'">>;
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format_error({unknown_var, Var, Type}) ->
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<<"Unknown field '", Var/binary, "' of type '",
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Type/binary, "'">>;
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format_error({missing_required_var, Var, Type}) ->
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<<"Missing required field '", Var/binary, "' of type '",
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Type/binary, "'">>.
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decode(Fs) -> decode(Fs, []).
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decode(Fs, Acc) ->
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case lists:keyfind(<<"FORM_TYPE">>, #xdata_field.var,
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Fs)
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of
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false -> decode(Fs, Acc, []);
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#xdata_field{values =
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[<<"http://jabber.org/protocol/offline">>]} ->
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decode(Fs, Acc, []);
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_ ->
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erlang:error({?MODULE,
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{form_type_mismatch,
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<<"http://jabber.org/protocol/offline">>}})
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end.
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encode(Cfg) -> encode(Cfg, fun (Text) -> Text end).
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encode(List, Translate) when is_list(List) ->
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Fs = [case Opt of
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{number_of_messages, Val} ->
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[encode_number_of_messages(Val, Translate)];
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{number_of_messages, _, _} ->
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erlang:error({badarg, Opt});
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#xdata_field{} -> [Opt];
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_ -> []
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end
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|| Opt <- List],
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FormType = #xdata_field{var = <<"FORM_TYPE">>,
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type = hidden,
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values =
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[<<"http://jabber.org/protocol/offline">>]},
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[FormType | lists:flatten(Fs)].
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decode([#xdata_field{var = <<"number_of_messages">>,
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values = [Value]}
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| Fs],
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Acc, Required) ->
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try dec_int(Value, 0, infinity) of
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Result ->
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decode(Fs, [{number_of_messages, Result} | Acc],
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lists:delete(<<"number_of_messages">>, Required))
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catch
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_:_ ->
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erlang:error({?MODULE,
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{bad_var_value, <<"number_of_messages">>,
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<<"http://jabber.org/protocol/offline">>}})
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end;
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decode([#xdata_field{var = <<"number_of_messages">>,
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values = []} =
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F
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| Fs],
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Acc, Required) ->
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decode([F#xdata_field{var = <<"number_of_messages">>,
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values = [<<>>]}
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| Fs],
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Acc, Required);
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decode([#xdata_field{var = <<"number_of_messages">>}
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| _],
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_, _) ->
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erlang:error({?MODULE,
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{too_many_values, <<"number_of_messages">>,
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<<"http://jabber.org/protocol/offline">>}});
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decode([#xdata_field{var = Var} | Fs], Acc, Required) ->
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if Var /= <<"FORM_TYPE">> ->
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erlang:error({?MODULE,
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{unknown_var, Var,
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<<"http://jabber.org/protocol/offline">>}});
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true -> decode(Fs, Acc, Required)
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end;
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decode([], _, [Var | _]) ->
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erlang:error({?MODULE,
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{missing_required_var, Var,
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<<"http://jabber.org/protocol/offline">>}});
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decode([], Acc, []) -> Acc.
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encode_number_of_messages(Value, Translate) ->
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Values = case Value of
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undefined -> [];
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Value -> [enc_int(Value)]
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end,
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Opts = [],
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#xdata_field{var = <<"number_of_messages">>,
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values = Values, required = false, type = 'text-single',
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options = Opts, desc = <<>>,
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label = Translate(<<"Number of Offline Messages">>)}.
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