119 lines
3.9 KiB
Erlang
119 lines
3.9 KiB
Erlang
%% The MIT License
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%% Copyright (c) 2010-2013 alisdair sullivan <alisdairsullivan@yahoo.ca>
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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-module(jsx_verify).
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-export([is_json/2, is_term/2]).
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-export([init/1, handle_event/2]).
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-spec is_json(Source::binary(), Config::proplists:proplist()) -> true | false | {incomplete, jsx:decoder()}.
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is_json(Source, Config) when is_list(Config) ->
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try (jsx:decoder(?MODULE, Config, jsx_config:extract_config(Config)))(Source)
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catch error:badarg -> false
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end.
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-spec is_term(Source::any(), Config::proplists:proplist()) -> true | false | {incomplete, jsx:encoder()}.
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is_term(Source, Config) when is_list(Config) ->
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try (jsx:encoder(?MODULE, Config, jsx_config:extract_config(Config)))(Source)
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catch error:badarg -> false
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end.
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parse_config(Config) -> parse_config(Config, []).
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%% ignore deprecated flags
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parse_config([no_repeated_keys|Rest], Config) ->
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parse_config(Rest, Config);
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parse_config([{repeated_keys, Val}|Rest], Config) when Val == true; Val == false ->
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parse_config(Rest, Config);
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parse_config([repeated_keys|Rest], Config) ->
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parse_config(Rest, Config);
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parse_config([{K, _}|Rest] = Options, Config) ->
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case lists:member(K, jsx_config:valid_flags()) of
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true -> parse_config(Rest, Config);
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false -> erlang:error(badarg, [Options, Config])
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end;
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parse_config([K|Rest] = Options, Config) ->
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case lists:member(K, jsx_config:valid_flags()) of
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true -> parse_config(Rest, Config);
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false -> erlang:error(badarg, [Options, Config])
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end;
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parse_config([], Config) ->
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Config.
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%% we don't actually need any state for this
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-type state() :: [].
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-spec init(Config::proplists:proplist()) -> state().
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init(Config) -> parse_config(Config).
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-spec handle_event(Event::any(), State::state()) -> state().
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handle_event(end_json, _) -> true;
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handle_event(_, State) -> State.
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%% eunit tests
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-ifdef(TEST).
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-include_lib("eunit/include/eunit.hrl").
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config_test_() ->
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[
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{"empty config", ?_assertEqual([], parse_config([]))},
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{"no repeat keys", ?_assertEqual([], parse_config([no_repeated_keys]))},
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{"bare repeated keys", ?_assertEqual([], parse_config([repeated_keys]))},
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{"repeated keys true", ?_assertEqual(
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[],
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parse_config([{repeated_keys, true}])
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)},
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{"repeated keys false", ?_assertEqual(
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[],
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parse_config([{repeated_keys, false}])
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)},
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{"invalid opt flag", ?_assertError(badarg, parse_config([error]))},
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{"invalid opt tuple", ?_assertError(badarg, parse_config([{error, true}]))}
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].
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handle_event_test_() ->
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Data = jsx:test_cases() ++ jsx:special_test_cases(),
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[
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{
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Title, ?_assertEqual(
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true,
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lists:foldl(fun handle_event/2, [], Events ++ [end_json])
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)
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} || {Title, _, _, Events} <- Data
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].
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-endif.
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