%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%%-------------------------------------------------------------------
%%% File : dgawd_handler.erl
%%% Author : Rickard Green <[email protected]>
%%% Description : Find out if Driver Gone Away Without Deselecting
%%% have been reported.
%%%
%%% Created : 13 Sep 2006 by Rickard Green <[email protected]>
%%%-------------------------------------------------------------------
-module(dgawd_handler).
-behaviour(gen_event).
%% API
-export([install/0, restore/0]).
-export([got_dgawd_report/0]).
%% gen_event callbacks
-export([init/1, handle_event/2, handle_call/2,
handle_info/2, terminate/2, code_change/3]).
%%====================================================================
%% API
%%====================================================================
install() ->
gen_event:add_handler(error_logger, ?MODULE, []).
restore() ->
gen_event:delete_handler(error_logger, ?MODULE, []).
got_dgawd_report() ->
gen_event:call(error_logger, ?MODULE, got_dgawd_report, 10*60*1000).
%%====================================================================
%% gen_event callbacks
%%====================================================================
init([]) ->
{ok, false}.
handle_event(_, true) ->
{ok, true};
handle_event({_, _, {emulator, _,IOList}}, false) ->
{ok, dgawd(lists:flatten(IOList))};
handle_event(_, State) ->
{ok, State}.
handle_call(got_dgawd_report, State) ->
{ok, State, State};
handle_call(_Query, _State) ->
{error, bad_query}.
handle_info(_, State) ->
{ok, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%
%% Internal functions
%%
dgawd([]) ->
false;
dgawd([$d,$r,$i,$v,$e,$r|Cs]) ->
gawd(Cs);
dgawd([_|Cs]) ->
dgawd(Cs).
gawd([]) ->
false;
gawd([$g,$o,$n,$e|Cs]) ->
awd(Cs);
gawd([_|Cs]) ->
gawd(Cs).
awd([]) ->
false;
awd([$a,$w,$a,$y|Cs]) ->
wd(Cs);
awd([_|Cs]) ->
awd(Cs).
wd([]) ->
false;
wd([$w,$i,$t,$h,$o,$u,$t|Cs]) ->
d(Cs);
wd([_|Cs]) ->
wd(Cs).
d([]) ->
false;
d([$d,$e,$s,$e,$l,$e,$c,$t,$i,$n,$g|_Cs]) ->
true;
d([_|Cs]) ->
d(Cs).
