fix: rm unused module
`emqx_rule_date` was added before [v4.3.15-rc1] PR: emqx#7894 commit:8558a62ee2The change was released in [v4.3.15-rc1] [v4.3.15-rc2] And unused at [v4.3.15-rc3] PR: emqx#8044 commit:4fc5cb2817We just keep the module from [v4.3.15-rc1] to [v4.3.20] and remove this module in newer version
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JimMoen
parent
fd7230353c
commit
267946c379
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@ -1,248 +0,0 @@
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%%--------------------------------------------------------------------
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%% Copyright (c) 2020-2022 EMQ Technologies Co., Ltd. All Rights Reserved.
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%%
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%% Licensed under the Apache License, Version 2.0 (the "License");
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%% you may not use this file except in compliance with the License.
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%% You may obtain a copy of the License at
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%%
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%% http://www.apache.org/licenses/LICENSE-2.0
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%%
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%% Unless required by applicable law or agreed to in writing, software
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%% distributed under the License is distributed on an "AS IS" BASIS,
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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%% See the License for the specific language governing permissions and
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%% limitations under the License.
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%%--------------------------------------------------------------------
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-module(emqx_rule_date).
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-export([date/3, date/4, parse_date/4]).
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-export([
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is_int_char/1,
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is_symbol_char/1,
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is_m_char/1
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]).
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-record(result, {
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%%year()
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year = "1970" :: string(),
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%%month()
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month = "1" :: string(),
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%%day()
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day = "1" :: string(),
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%%hour()
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hour = "0" :: string(),
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%%minute() %% epoch in millisecond precision
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minute = "0" :: string(),
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%%second() %% epoch in millisecond precision
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second = "0" :: string(),
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%%integer() %% zone maybe some value
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zone = "+00:00" :: string()
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}).
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%% -type time_unit() :: 'microsecond'
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%% | 'millisecond'
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%% | 'nanosecond'
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%% | 'second'.
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%% -type offset() :: [byte()] | (Time :: integer()).
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date(TimeUnit, Offset, FormatString) ->
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date(TimeUnit, Offset, FormatString, erlang:system_time(TimeUnit)).
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date(TimeUnit, Offset, FormatString, TimeEpoch) ->
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[Head | Other] = string:split(FormatString, "%", all),
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R = create_tag([{st, Head}], Other),
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Res = lists:map(
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fun(Expr) ->
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eval_tag(rmap(make_time(TimeUnit, Offset, TimeEpoch)), Expr)
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end,
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R
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),
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lists:concat(Res).
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parse_date(TimeUnit, Offset, FormatString, InputString) ->
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[Head | Other] = string:split(FormatString, "%", all),
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R = create_tag([{st, Head}], Other),
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IsZ = fun(V) ->
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case V of
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{tag, $Z} -> true;
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_ -> false
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end
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end,
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R1 = lists:filter(IsZ, R),
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IfFun = fun(Con, A, B) ->
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case Con of
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[] -> A;
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_ -> B
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end
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end,
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Res = parse_input(FormatString, InputString),
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Str =
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Res#result.year ++ "-" ++
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Res#result.month ++ "-" ++
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Res#result.day ++ "T" ++
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Res#result.hour ++ ":" ++
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Res#result.minute ++ ":" ++
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Res#result.second ++
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IfFun(R1, Offset, Res#result.zone),
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calendar:rfc3339_to_system_time(Str, [{unit, TimeUnit}]).
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mlist(R) ->
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%% %H Shows hour in 24-hour format [15]
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[
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{$H, R#result.hour},
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%% %M Displays minutes [00-59]
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{$M, R#result.minute},
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%% %S Displays seconds [00-59]
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{$S, R#result.second},
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%% %y Displays year YYYY [2021]
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{$y, R#result.year},
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%% %m Displays the number of the month [01-12]
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{$m, R#result.month},
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%% %d Displays the number of the month [01-12]
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{$d, R#result.day},
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%% %Z Displays Time zone
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{$Z, R#result.zone}
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].
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rmap(Result) ->
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maps:from_list(mlist(Result)).
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support_char() -> "HMSymdZ".
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create_tag(Head, []) ->
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Head;
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create_tag(Head, [Val1 | RVal]) ->
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case Val1 of
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[] ->
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create_tag(Head ++ [{st, [$%]}], RVal);
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[H | Other] ->
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case lists:member(H, support_char()) of
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true -> create_tag(Head ++ [{tag, H}, {st, Other}], RVal);
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false -> create_tag(Head ++ [{st, [$% | Val1]}], RVal)
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end
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end.
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eval_tag(_, {st, Str}) ->
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Str;
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eval_tag(Map, {tag, Char}) ->
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maps:get(Char, Map, "undefined").
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%% make_time(TimeUnit, Offset) ->
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%% make_time(TimeUnit, Offset, erlang:system_time(TimeUnit)).
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make_time(TimeUnit, Offset, TimeEpoch) ->
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Res = calendar:system_time_to_rfc3339(TimeEpoch,
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[{unit, TimeUnit}, {offset, Offset}]),
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[Y1, Y2, Y3, Y4, $-, Mon1, Mon2, $-, D1, D2, _T,
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H1, H2, $:, Min1, Min2, $:, S1, S2 | TimeStr] = Res,
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IsFractionChar = fun(C) -> C >= $0 andalso C =< $9 orelse C =:= $. end,
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{FractionStr, UtcOffset} = lists:splitwith(IsFractionChar, TimeStr),
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#result{
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year = [Y1, Y2, Y3, Y4]
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, month = [Mon1, Mon2]
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, day = [D1, D2]
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, hour = [H1, H2]
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, minute = [Min1, Min2]
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, second = [S1, S2] ++ FractionStr
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, zone = UtcOffset
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}.
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is_int_char(C) ->
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C >= $0 andalso C =< $9.
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is_symbol_char(C) ->
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C =:= $- orelse C =:= $+.
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is_m_char(C) ->
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C =:= $:.
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parse_char_with_fun(_, []) ->
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error(null_input);
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parse_char_with_fun(ValidFun, [C | Other]) ->
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Res =
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case erlang:is_function(ValidFun) of
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true -> ValidFun(C);
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false -> erlang:apply(emqx_rule_date, ValidFun, [C])
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end,
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case Res of
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true -> {C, Other};
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false -> error({unexpected, [C | Other]})
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end.
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parse_string([], Input) ->
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{[], Input};
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parse_string([C | Other], Input) ->
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{C1, Input1} = parse_char_with_fun(fun(V) -> V =:= C end, Input),
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{Res, Input2} = parse_string(Other, Input1),
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{[C1 | Res], Input2}.
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parse_times(0, _, Input) ->
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{[], Input};
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parse_times(Times, Fun, Input) ->
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{C1, Input1} = parse_char_with_fun(Fun, Input),
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{Res, Input2} = parse_times((Times - 1), Fun, Input1),
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{[C1 | Res], Input2}.
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parse_int_times(Times, Input) ->
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parse_times(Times, is_int_char, Input).
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parse_fraction(Input) ->
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IsFractionChar = fun(C) -> C >= $0 andalso C =< $9 orelse C =:= $. end,
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lists:splitwith(IsFractionChar, Input).
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parse_second(Input) ->
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{M, Input1} = parse_int_times(2, Input),
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{M1, Input2} = parse_fraction(Input1),
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{M ++ M1, Input2}.
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parse_zone(Input) ->
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{S, Input1} = parse_char_with_fun(is_symbol_char, Input),
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{M, Input2} = parse_int_times(2, Input1),
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{C, Input3} = parse_char_with_fun(is_m_char, Input2),
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{V, Input4} = parse_int_times(2, Input3),
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{[S | M ++ [C | V]], Input4}.
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mlist1() ->
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maps:from_list(
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%% %H Shows hour in 24-hour format [15]
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[
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{$H, fun(Input) -> parse_int_times(2, Input) end},
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%% %M Displays minutes [00-59]
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{$M, fun(Input) -> parse_int_times(2, Input) end},
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%% %S Displays seconds [00-59]
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{$S, fun(Input) -> parse_second(Input) end},
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%% %y Displays year YYYY [2021]
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{$y, fun(Input) -> parse_int_times(4, Input) end},
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%% %m Displays the number of the month [01-12]
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{$m, fun(Input) -> parse_int_times(2, Input) end},
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%% %d Displays the number of the month [01-12]
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{$d, fun(Input) -> parse_int_times(2, Input) end},
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%% %Z Displays Time zone
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{$Z, fun(Input) -> parse_zone(Input) end}
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]
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).
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update_result($H, Res, Str) -> Res#result{hour = Str};
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update_result($M, Res, Str) -> Res#result{minute = Str};
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update_result($S, Res, Str) -> Res#result{second = Str};
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update_result($y, Res, Str) -> Res#result{year = Str};
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update_result($m, Res, Str) -> Res#result{month = Str};
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update_result($d, Res, Str) -> Res#result{day = Str};
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update_result($Z, Res, Str) -> Res#result{zone = Str}.
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parse_tag(Res, {st, St}, InputString) ->
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{_A, B} = parse_string(St, InputString),
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{Res, B};
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parse_tag(Res, {tag, St}, InputString) ->
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Fun = maps:get(St, mlist1()),
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{A, B} = Fun(InputString),
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NRes = update_result(St, Res, A),
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{NRes, B}.
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parse_tags(Res, [], _) ->
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Res;
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parse_tags(Res, [Tag | Others], InputString) ->
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{NRes, B} = parse_tag(Res, Tag, InputString),
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parse_tags(NRes, Others, B).
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parse_input(FormatString, InputString) ->
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[Head | Other] = string:split(FormatString, "%", all),
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R = create_tag([{st, Head}], Other),
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parse_tags(#result{}, R, InputString).
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