aboutsummaryrefslogblamecommitdiffstats
path: root/lib/webtool/src/webtool.erl
blob: 51d821751cc5dbae9fd5cb5387914fd07c909d12 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205



















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































                                                                                                               
%%
%% %CopyrightBegin%
%% 
%% Copyright Ericsson AB 2001-2009. All Rights Reserved.
%% 
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%% 
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%% 
%% %CopyrightEnd%
%%
-module(webtool).
-behaviour(gen_server).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                    %%
%% The general idea is:                                               %%
%%                                                                    %%
%%                                                                    %%
%% 1. Scan through the path for *.tool files and find all the web     %%
%%    based tools. Query each tool for configuration data.            %%
%% 2. Add Alias for Erlscript and html for each tool to               %%
%%    the webserver configuration data.                               %%
%% 3. Start the webserver.                                            %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%% API functions
-export([start/0, start/2, stop/0]).

%% Starting Webtool from a shell script
-export([script_start/0, script_start/1]).

%% Web api
-export([started_tools/2, toolbar/2, start_tools/2, stop_tools/2]).

%% API against other tools
-export([is_localhost/0]).

%% Debug export s
-export([get_tools1/1]).
-export([debug/1, stop_debug/0, debug_app/1]).

%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
	 terminate/2, code_change/3]).

-include_lib("kernel/include/file.hrl").
-include_lib("stdlib/include/ms_transform.hrl").

-record(state,{priv_dir,app_data,supvis,web_data,started=[]}).

-define(MAX_NUMBER_OF_WEBTOOLS,256).
-define(DEFAULT_PORT,8888).% must be >1024 or the user must be root on unix
-define(DEFAULT_ADDR,{127,0,0,1}).

-define(WEBTOOL_ALIAS,{webtool,[{alias,{erl_alias,"/webtool",[webtool]}}]}).
-define(HEADER,"Pragma:no-cache\r\n Content-type: text/html\r\n\r\n").
-define(HTML_HEADER,"<HTML>\r\n<HEAD>\r\n<TITLE>WebTool</TITLE>\r\n</HEAD>\r\n<BODY BGCOLOR=\"#FFFFFF\">\r\n").
-define(HTML_HEADER_RELOAD,"<HTML>\r\n<HEAD>\r\n<TITLE>WebTool
                             </TITLE>\r\n</HEAD>\r\n
                             <BODY BGCOLOR=\"#FFFFFF\" onLoad=reloadCompiledList()>\r\n").

-define(HTML_END,"</BODY></HTML>").

-define(SEND_URL_TIMEOUT,5000).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%% For debugging only.                                              %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Start tracing with
%% debug(Functions).
%% Functions = local | global | FunctionList
%% FunctionList = [Function]
%% Function = {FunctionName,Arity} | FunctionName |
%%            {Module, FunctionName, Arity} | {Module,FunctionName}
debug(F) -> 
    ttb:tracer(all,[{file,"webtool.trc"}]), % tracing all nodes
    ttb:p(all,[call,timestamp]),
    MS = [{'_',[],[{return_trace},{message,{caller}}]}],
    tp(F,MS),
    ttb:ctp(?MODULE,stop_debug), % don't want tracing of the stop_debug func
    ok.
tp(local,MS) -> % all functions
    ttb:tpl(?MODULE,MS);
tp(global,MS) -> % all exported functions
    ttb:tp(?MODULE,MS);
tp([{M,F,A}|T],MS) -> % Other module
    ttb:tpl(M,F,A,MS),
    tp(T,MS);
tp([{M,F}|T],MS) when is_atom(F) -> % Other module
    ttb:tpl(M,F,MS),
    tp(T,MS);
tp([{F,A}|T],MS) -> % function/arity
    ttb:tpl(?MODULE,F,A,MS),
    tp(T,MS);
tp([F|T],MS) -> % function
    ttb:tpl(?MODULE,F,MS),
    tp(T,MS);
tp([],_MS) ->
    ok.
stop_debug() ->
    ttb:stop([format]).

debug_app(Mod) ->
    ttb:tracer(all,[{file,"webtool_app.trc"},{handler,{fun out/4,true}}]),
    ttb:p(all,[call,timestamp]),
    MS = [{'_',[],[{return_trace},{message,{caller}}]}],
    ttb:tp(Mod,MS),
    ok.
   
out(_,{trace_ts,Pid,call,MFA={M,F,A},{W,_,_},TS},_,S) 
  when W==webtool;W==mod_esi-> 
    io:format("~w: (~p)~ncall ~s~n", [TS,Pid,ffunc(MFA)]),
    [{M,F,length(A)}|S];
out(_,{trace_ts,Pid,return_from,MFA,R,TS},_,[MFA|S]) ->
    io:format("~w: (~p)~nreturned from ~s -> ~p~n", [TS,Pid,ffunc(MFA),R]),
    S;
out(_,_,_,_) ->
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%% Functions called via script.                                     %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
script_start() ->
    usage(),
    halt().
script_start([App]) ->
    DefaultBrowser = 
	case os:type() of
	    {win32,_} -> iexplore;
	    _ -> netscape
	end,
    script_start([App,DefaultBrowser]);
script_start([App,Browser]) ->
    io:format("Starting webtool...\n"),
    start(),
    AvailableApps = get_applications(),
    {OSType,_} = os:type(),
    case lists:keysearch(App,1,AvailableApps) of
	{value,{App,StartPage}} ->
	    io:format("Starting ~w...\n",[App]),
	    start_tools([],"app=" ++ atom_to_list(App)),
	    PortStr = integer_to_list(get_port()),
	    Url = case StartPage of
		      "/" ++ Page -> 
			  "http://localhost:" ++ PortStr ++ "/" ++ Page;
		      _ -> 
			  "http://localhost:" ++ PortStr ++ "/" ++ StartPage
		  end,
	    case Browser of 
                iexplore when OSType == win32->
                    io:format("Starting internet explorer...\n"),
                    {ok,R} = win32reg:open(""),
		    Key="\\local_machine\\SOFTWARE\\Microsoft\\IE Setup\\Setup",
                    win32reg:change_key(R,Key),
                    {ok,Val} = win32reg:value(R,"Path"),
		    IExplore=filename:join(win32reg:expand(Val),"iexplore.exe"),
                    os:cmd("\"" ++ IExplore ++ "\" " ++ Url);
		_ when OSType == win32 ->
                    io:format("Starting ~w...\n",[Browser]),
                    os:cmd("\"" ++ atom_to_list(Browser) ++ "\" " ++ Url);
		B when B==netscape; B==mozilla ->
		    io:format("Sending URL to ~w...",[Browser]),
		    BStr = atom_to_list(Browser),
		    SendCmd = BStr ++ " -raise -remote \'openUrl(" ++ 
			Url ++ ")\'",
		    Port = open_port({spawn,SendCmd},[exit_status]),
		    receive 
			{Port,{exit_status,0}} -> 
			    io:format("done\n"),
			    ok;
			{Port,{exit_status,_Error}} ->
			    io:format(" not running, starting ~w...\n",
				      [Browser]),
			    os:cmd(BStr ++ " " ++ Url),
			    ok
		    after ?SEND_URL_TIMEOUT ->
			    io:format(" failed, starting ~w...\n",[Browser]),
			    erlang:port_close(Port),
			    os:cmd(BStr ++ " " ++ Url)
		    end;
		_ ->
		    io:format("Starting ~w...\n",[Browser]),
		    os:cmd(atom_to_list(Browser) ++ " " ++ Url)
	    end,
	    ok;
	false ->
	    stop(),
	    io:format("\n{error,{unknown_app,~p}}\n",[App]),
	    halt()
    end.

usage() ->
    io:format("Starting webtool...\n"),
    start(),
    Apps = lists:map(fun({A,_}) -> A end,get_applications()),
    io:format(
      "\nUsage: start_webtool application [ browser ]\n"
      "\nAvailable applications are: ~p\n"
      "Default browser is \'iexplore\' (Internet Explorer) on Windows "
      "or else \'netscape\'\n",
      [Apps]),
    stop().


get_applications() ->
    gen_server:call(web_tool,get_applications).
    
get_port() ->
    gen_server:call(web_tool,get_port).


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%% Api functions to the genserver.                                  %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
%
%----------------------------------------------------------------------

start()->
    start(standard_path,standard_data).

start(Path,standard_data)->
    case get_standard_data() of
	{error,Reason} ->
	    {error,Reason};
	Data ->
	    start(Path,Data)
    end;
    
start(standard_path,Data)->
    Path=get_path(),
    start(Path,Data);
    
start(Path,Port) when is_integer(Port)->
    Data = get_standard_data(Port),
    start(Path,Data);
	
start(Path,Data0)->
    Data = Data0 ++ rest_of_standard_data(),
    gen_server:start({local,web_tool},webtool,{Path,Data},[]).

stop()->
    gen_server:call(web_tool,stoppit).

%----------------------------------------------------------------------
%Web Api functions called by the web
%----------------------------------------------------------------------
started_tools(Env,Input)->
    gen_server:call(web_tool,{started_tools,Env,Input}).

toolbar(Env,Input)->    
    gen_server:call(web_tool,{toolbar,Env,Input}).

start_tools(Env,Input)->
    gen_server:call(web_tool,{start_tools,Env,Input}).

stop_tools(Env,Input)->
    gen_server:call(web_tool,{stop_tools,Env,Input}).
%----------------------------------------------------------------------
%Support API for other tools
%----------------------------------------------------------------------

is_localhost()->
    gen_server:call(web_tool,is_localhost).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%%The gen_server callback functions that builds the webbpages       %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
handle_call(get_applications,_,State)->
    MS = ets:fun2ms(fun({Tool,{web_data,{_,Start}}}) -> {Tool,Start} end),
    Tools = ets:select(State#state.app_data,MS),
    {reply,Tools,State};

handle_call(get_port,_,State)->
    {value,{port,Port}}=lists:keysearch(port,1,State#state.web_data),
    {reply,Port,State};

handle_call({started_tools,_Env,_Input},_,State)->
    {reply,started_tools_page(State),State};

handle_call({toolbar,_Env,_Input},_,State)->
    {reply,toolbar(),State};

handle_call({start_tools,Env,Input},_,State)->
    {NewState,Page}=start_tools_page(Env,Input,State),
    {reply,Page,NewState};

handle_call({stop_tools,Env,Input},_,State)->
    {NewState,Page}=stop_tools_page(Env,Input,State),
    {reply,Page,NewState};

handle_call(stoppit,_From,Data)->
    {stop,normal,ok,Data};

handle_call(is_localhost,_From,Data)->
    Result=case proplists:get_value(bind_address, Data#state.web_data) of
	?DEFAULT_ADDR ->
	    true;
	_IpNumber ->
	    false 
    end,
    {reply,Result,Data}.


handle_info(_Message,State)->
    {noreply,State}.

handle_cast(_Request,State)->
    {noreply,State}.

code_change(_,State,_)->
    {ok,State}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% The other functions needed by the gen_server behaviour 
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
% Start the gen_server
%----------------------------------------------------------------------
init({Path,Config})->
    case filelib:is_dir(Path) of
	true ->
	    {ok, Table} = get_tool_files_data(),
	    insert_app(?WEBTOOL_ALIAS, Table),
	    case webtool_sup:start_link() of
		{ok, Pid} ->
		    case start_webserver(Table, Path, Config) of
			{ok, _} ->
			    print_url(Config),	
			    {ok,#state{priv_dir=Path,
				       app_data=Table,
				       supvis=Pid,
				       web_data=Config}};
			{error, Error} ->
			    {stop, {error, Error}}
		    end;
		Error ->
		    {stop,Error}
	    end;
	false ->
	   {stop, {error, error_dir}}
    end.

terminate(_Reason,Data)->
    %%shut down the webbserver
    shutdown_server(Data),
    %%Shutdown the different tools that are started with application:start
    shutdown_apps(Data),
    %%Shutdown the supervisor and its children will die
    shutdown_supervisor(Data),
    ok.

print_url(ConfigData)->
    Server=proplists:get_value(server_name,ConfigData,"undefined"),
    Port=proplists:get_value(port,ConfigData,"undefined"),
    {A,B,C,D}=proplists:get_value(bind_address,ConfigData,"undefined"),
    io:format("WebTool is available at http://~s:~w/~n",[Server,Port]),
    io:format("Or  http://~w.~w.~w.~w:~w/~n",[A,B,C,D,Port]).


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% begin build the pages
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%----------------------------------------------------------------------
%The page that shows the started tools
%----------------------------------------------------------------------
started_tools_page(State)->
    [?HEADER,?HTML_HEADER,started_tools(State),?HTML_END].

toolbar()->
    [?HEADER,?HTML_HEADER,toolbar_page(),?HTML_END].

               
start_tools_page(_Env,Input,State)->
    %%io:format("~n======= ~n ~p ~n============~n",[Input]),
    case get_tools(Input) of
	{tools,Tools}->
	    %%io:format("~n======= ~n ~p ~n============~n",[Tools]),
	    {ok,NewState}=handle_apps(Tools,State,start),
	    {NewState,[?HEADER,?HTML_HEADER_RELOAD,reload_started_apps(),
		       show_unstarted_apps(NewState),?HTML_END]};
	_ ->
	    {State,[?HEADER,?HTML_HEADER,show_unstarted_apps(State),?HTML_END]}
    end.

stop_tools_page(_Env,Input,State)->
    case get_tools(Input) of
	{tools,Tools}->
	    {ok,NewState}=handle_apps(Tools,State,stop),
	    {NewState,[?HEADER,?HTML_HEADER_RELOAD,reload_started_apps(),
		       show_started_apps(NewState),?HTML_END]};
	_ ->
	    {State,[?HEADER,?HTML_HEADER,show_started_apps(State),?HTML_END]}
    end.
	


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Functions that start and config the webserver
%% 1. Collect the config data
%% 2. Start webserver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%----------------------------------------------------------------------
% Start the webserver
%----------------------------------------------------------------------
start_webserver(Data,Path,Config)->
    case get_conf_data(Data,Path,Config) of
	{ok,Conf_data}->
	    %%io:format("Conf_data: ~p~n",[Conf_data]),
	    start_server(Conf_data);
	{error,Error} ->
	    {error,{error_server_conf_file,Error}}
    end.

start_server(Conf_data)->
    case inets:start(httpd, Conf_data, stand_alone) of
	{ok,Pid}->
	    {ok,Pid};
	Error->
	    {error,{server_error,Error}}
    end.

%----------------------------------------------------------------------
% Create config data for the webserver 
%----------------------------------------------------------------------
get_conf_data(Data,Path,Config)->
    Aliases=get_aliases(Data),
    ServerRoot = filename:join([Path,"root"]),
    MimeTypesFile = filename:join([ServerRoot,"conf","mime.types"]),
    case httpd_conf:load_mime_types(MimeTypesFile) of
	{ok,MimeTypes} ->
	    Config1 = Config ++ Aliases,
	    Config2 = [{server_root,ServerRoot},
			    {document_root,filename:join([Path,"root/doc"])},
			    {mime_types,MimeTypes} |
			    Config1],
	    {ok,Config2};
	Error ->
	    Error
    end.

%----------------------------------------------------------------------
% Control the path for *.tools files 
%----------------------------------------------------------------------
get_tool_files_data()->
    Tools=get_tools1(code:get_path()),
    %%io:format("Data : ~p ~n",[Tools]),
    get_file_content(Tools).

%----------------------------------------------------------------------
%Control that the data in the file really is erlang terms
%---------------------------------------------------------------------- 
get_file_content(Tools)->
    Get_data=fun({tool,ToolData}) ->
		     %%io:format("Data : ~p ~n",[ToolData]),
		     case proplists:get_value(config_func,ToolData) of
			 {M,F,A}->
			     case catch apply(M,F,A) of
				 {'EXIT',_} ->
				     bad_data;
				 Data when is_tuple(Data) ->
				     Data;
				 _->
				     bad_data  
			     end;
			 _ ->
				bad_data
		     end
	     end,
    insert_file_content([X ||X<-lists:map(Get_data,Tools),X/=bad_data]).

%----------------------------------------------------------------------
%Insert the data from the file in to the ets:table
%----------------------------------------------------------------------
insert_file_content(Content)->
    Table=ets:new(app_data,[bag]),
    lists:foreach(fun(X)->
			  insert_app(X,Table)
		  end,Content),
    {ok,Table}.

%----------------------------------------------------------------------
%Control that we got a a tuple of a atom and a list if so add the 
%elements in the list to the ets:table
%----------------------------------------------------------------------
insert_app({Name,Key_val_list},Table) when is_list(Key_val_list),is_atom(Name)->
    %%io:format("ToolData: ~p: ~p~n",[Name,Key_val_list]),
    lists:foreach(
      fun({alias,{erl_alias,Alias,Mods}}) ->
	      Key_val = {erl_script_alias,{Alias,Mods}},
	      %%io:format("Insert: ~p~n",[Key_val]),
	      ets:insert(Table,{Name,Key_val});
	 (Key_val_pair)->
	      %%io:format("Insert: ~p~n",[Key_val_pair]),
	      ets:insert(Table,{Name,Key_val_pair})
      end,
      Key_val_list);

insert_app(_,_)->
    ok.
   
%----------------------------------------------------------------------
% Select all the alias in the database
%----------------------------------------------------------------------
get_aliases(Data)->
    MS = ets:fun2ms(fun({_,{erl_script_alias,Alias}}) -> 
			    {erl_script_alias,Alias};
		       ({_,{alias,Alias}}) -> 
			    {alias,Alias} 
		    end),
    ets:select(Data,MS).


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%% Helper functions                                                 %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
get_standard_data(Port)->
    [
     {port,Port},
     {bind_address,?DEFAULT_ADDR},
     {server_name,"localhost"}
    ].

get_standard_data()->
    case get_free_port(?DEFAULT_PORT,?MAX_NUMBER_OF_WEBTOOLS) of
	{error,Reason} -> {error,Reason};
	Port ->
	    [
	     {port,Port},
	     {bind_address,?DEFAULT_ADDR},
	     {server_name,"localhost"}
	    ]
    end.

get_free_port(_Port,0) ->
    {error,no_free_port_found};
get_free_port(Port,N) ->
    case gen_tcp:connect("localhost",Port,[]) of
	{error, _Reason} ->
	    Port;
	{ok,Sock} ->
	    gen_tcp:close(Sock),
	    get_free_port(Port+1,N-1)
    end.

rest_of_standard_data() ->
    [
     %% Do not allow the server to be crashed by malformed http-request
     {max_header_siz,1024},
     {max_header_action,reply414},
     %% Go on a straight ip-socket
     {com_type,ip_comm},
     %% Do not change the order of these module names!!
     {modules,[mod_alias,
	       mod_auth,
	       mod_esi,
	       mod_actions,
	       mod_cgi,
	       mod_include,
	       mod_dir,
	       mod_get,
	       mod_head,
	       mod_log,
	       mod_disk_log]},
     {directory_index,["index.html"]},
     {default_type,"text/plain"}
    ].


get_path()->
    code:priv_dir(webtool).


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% These functions is used to shutdown the webserver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%----------------------------------------------------------------------
% Shut down the webbserver 
%----------------------------------------------------------------------
shutdown_server(State)->
    {Addr,Port} = get_addr_and_port(State#state.web_data),
    inets:stop(httpd,{Addr,Port}).

get_addr_and_port(Config) ->
    Addr = proplists:get_value(bind_address,Config,?DEFAULT_ADDR),
    Port = proplists:get_value(port,Config,?DEFAULT_PORT),
    {Addr,Port}.

%----------------------------------------------------------------------
% Select all apps in the table and close them
%----------------------------------------------------------------------
shutdown_apps(State)->
    Data=State#state.app_data,
    MS = ets:fun2ms(fun({_,{start,HowToStart}}) -> HowToStart end),
    lists:foreach(fun(Start_app)->
			  stop_app(Start_app)
		  end,
		  ets:select(Data,MS)).

%----------------------------------------------------------------------
%Shuts down the supervisor that supervises tools that is not
%Designed as applications
%----------------------------------------------------------------------
shutdown_supervisor(State)->
    %io:format("~n==================~n"),
    webtool_sup:stop(State#state.supvis).
    %io:format("~n==================~n").

%----------------------------------------------------------------------
%close the individual apps.
%----------------------------------------------------------------------  
stop_app({child,_Real_name})->
    ok;

stop_app({app,Real_name})->
    application:stop(Real_name);

stop_app({func,_Start,Stop})->    
    case Stop of
	{M,F,A} ->
	    catch apply(M,F,A);
	_NoStop ->
	    ok
    end.






%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% These functions creates the webpage where the user can select if 
%% to start apps or to stop apps
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

toolbar_page()->
    "<TABLE>
       <TR>
         <TD>
             <B>Select Action</B>
         </TD>
       </TR>
       <TR>
         <TD>
            <A HREF=\"./start_tools\" TARGET=right> Start Tools</A>
         </TD>
       </TR>
       <TR>
         <TD>
            <A HREF=\"./stop_tools\" TARGET=right> Stop Tools</A>
	 </TD> 
      </TR> 
    </TABLE>".
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% These functions creates the webbpage that  shows the started apps
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%----------------------------------------------------------------------
% started_tools(State)->String (html table)
% State is a record of type state
%----------------------------------------------------------------------
started_tools(State)->
    Names=get_started_apps(State#state.app_data,State#state.started),
    "<TABLE BORDER=1 WIDTH=100%>
	"++ make_rows(Names,[],0) ++"
     </TABLE>".
%----------------------------------------------------------------------
%get_started_apps(Data,Started)-> [{web_name,link}]
%selects the started apps from the ets table of apps.
%----------------------------------------------------------------------
    
get_started_apps(Data,Started)->
    SelectData=fun({Name,Link}) ->
		       {Name,Link}
	       end,
    MS = lists:map(fun(A) -> {{A,{web_data,'$1'}},[],['$1']} end,Started),

    [{"WebTool","/tool_management.html"} | 
     [SelectData(X) || X <- ets:select(Data,MS)]].

%----------------------------------------------------------------------
% make_rows(List,Result,Fields)-> String (The rows of a htmltable
% List a list of tupler discibed above
% Result an accumulator for the result
% Field, counter that counts the number of cols in each row.
%----------------------------------------------------------------------
make_rows([],Result,Fields)->
    Result ++ fill_out(Fields);
make_rows([Data|Paths],Result,Field)when Field==0->
   make_rows(Paths,Result ++ "<TR>" ++ make_field(Data),Field+1);

make_rows([Path|Paths],Result,Field)when Field==4->
   make_rows(Paths,Result ++ make_field(Path) ++ "</TR>",0);

make_rows([Path|Paths],Result,Field)->
   make_rows(Paths,Result ++ make_field(Path),Field+1).

%----------------------------------------------------------------------
% make_fields(Path)-> String that is a field i a html table
% Path is a name url tuple {Name,url}
%----------------------------------------------------------------------
make_field(Path)->
    "<TD WIDTH=20%>" ++ get_name(Path) ++ "</TD>".


%----------------------------------------------------------------------
%get_name({Nae,Url})->String that represents a <A> tag in html. 
%----------------------------------------------------------------------
get_name({Name,Url})->
    "<A HREF=\"" ++ Url ++ "\" TARGET=app_frame>" ++ Name ++ "</A>".


%----------------------------------------------------------------------
% fill_out(Nr)-> String, that represent Nr fields in a html-table.
%----------------------------------------------------------------------
fill_out(Nr)when Nr==0->
    [];
fill_out(Nr)when Nr==4->
    "<TD WIDTH=\"20%\" >&nbsp</TD></TR>";

fill_out(Nr)->
    "<TD WIDTH=\"20%\">&nbsp</TD>" ++ fill_out(Nr+1).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%%These functions starts applicatons and builds the page showing tools
%%to start
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%---------------------------------------------------------------------- 
%Controls whether the user selected a tool to start
%----------------------------------------------------------------------
get_tools(Input)->
    case httpd:parse_query(Input) of
	[]->
	    no_tools;
	 Tools->
	    FormatData=fun({_Name,Data}) -> list_to_atom(Data) end,
	    SelectData=
		fun({Name,_Data}) -> string:equal(Name,"app") end,
	    {tools,[FormatData(X)||X<-Tools,SelectData(X)]}
    end.

%----------------------------------------------------------------------
% Selects the data to start  the applications the user has ordered 
% starting of 
%----------------------------------------------------------------------
handle_apps([],State,_Cmd)->
    {ok,State};

handle_apps([Tool|Tools],State,Cmd)->
    case ets:match_object(State#state.app_data,{Tool,{start,'_'}}) of
	[]->
	    Started = case Cmd of
			  start ->
			      [Tool|State#state.started];
			  stop ->
			      lists:delete(Tool,State#state.started)
		      end,
	    {ok,#state{priv_dir=State#state.priv_dir,
		       app_data=State#state.app_data,
		       supvis=State#state.supvis,
		       web_data=State#state.web_data,
		       started=Started}};
	ToStart ->
	    case handle_apps2(ToStart,State,Cmd) of
		{ok,NewState}->
		    handle_apps(Tools,NewState,Cmd);
		_->
		    handle_apps(Tools,State,Cmd)
	    end
    end.

%----------------------------------------------------------------------
%execute every start or stop data about a tool.
%----------------------------------------------------------------------
handle_apps2([{Name,Start_data}],State,Cmd)->
    case handle_app({Name,Start_data},State#state.app_data,State#state.supvis,Cmd) of
	ok->
	    Started = case Cmd of
			  start ->
			      [Name|State#state.started];
			  stop ->
			      
			      lists:delete(Name,State#state.started)
		      end,
	    {ok,#state{priv_dir=State#state.priv_dir,
		       app_data=State#state.app_data,
		       supvis=State#state.supvis,
		       web_data=State#state.web_data,
		       started=Started}};
	_->
	    error
    end;

handle_apps2([{Name,Start_data}|Rest],State,Cmd)->
    case handle_app({Name,Start_data},State#state.app_data,State#state.supvis,Cmd)of
	ok->
	    handle_apps2(Rest,State,Cmd);
	_->
	    error
    end.


%----------------------------------------------------------------------
% Handle start and stop of applications
%---------------------------------------------------------------------- 

handle_app({Name,{start,{func,Start,Stop}}},Data,_Pid,Cmd)->
    Action = case Cmd of
		 start ->
		     Start;
		 _ ->
		     Stop
	     end,    
    case Action of
	{M,F,A} ->
	    case catch apply(M,F,A) of
		{'EXIT',_} = Exit->
		    %%! Here the tool disappears from the webtool interface!!
		    io:format("\n=======ERROR (webtool, line ~w) =======\n"
			      "Could not start application \'~p\'\n\n"
			      "~w:~w(~s) ->\n"
			      "~p\n\n",
			      [?LINE,Name,M,F,format_args(A),Exit]),
		    ets:delete(Data,Name);
		_OK->
		    ok
	    end;
	_NoStart ->
	    ok
    end;
	    

handle_app({Name,{start,{child,ChildSpec}}},Data,Pid,Cmd)->
    case Cmd of
	start ->
	    case catch supervisor:start_child(Pid,ChildSpec) of
		{ok,_}->
		    ok;
		{ok,_,_}->
		    ok;
		{error,Reason}->
		    %%! Here the tool disappears from the webtool interface!!
		    io:format("\n=======ERROR (webtool, line ~w) =======\n"
			      "Could not start application \'~p\'\n\n"
			      "supervisor:start_child(~p,~p) ->\n"
			      "~p\n\n",
			      [?LINE,Name,Pid,ChildSpec,{error,Reason}]),
		    ets:delete(Data,Name);
		Error ->
		    %%! Here the tool disappears from the webtool interface!!
		    io:format("\n=======ERROR (webtool, line ~w) =======\n"
			      "Could not start application \'~p\'\n\n"
			      "supervisor:start_child(~p,~p) ->\n"
			      "~p\n\n",
			      [?LINE,Name,Pid,ChildSpec,Error]),
		    ets:delete(Data,Name)
	    end;
	stop ->
	    case catch supervisor:terminate_child(websup,element(1,ChildSpec)) of
		ok ->
		    supervisor:delete_child(websup,element(1,ChildSpec));
		_ ->
		    error
	    end
    end;



handle_app({Name,{start,{app,Real_name}}},Data,_Pid,Cmd)->
    case Cmd of
	start ->
	    case application:start(Real_name,temporary) of
		ok->
		    io:write(Name),
		    ok;
		{error,{already_started,_}}->
		    %% Remove it from the database so we dont start
		    %% anything already started
		    ets:match_delete(Data,{Name,{start,{app,Real_name}}}),
		    ok;
		{error,_Reason}=Error->
		    %%! Here the tool disappears from the webtool interface!!
		    io:format("\n=======ERROR (webtool, line ~w) =======\n"
			      "Could not start application \'~p\'\n\n"
			      "application:start(~p,~p) ->\n"
			      "~p\n\n",
			      [?LINE,Name,Real_name,temporary,Error]),
		    ets:delete(Data,Name)
	    end;
	
	stop ->
	    application:stop(Real_name)
    end;

%----------------------------------------------------------------------
% If the data is incorrect delete the app
%----------------------------------------------------------------------
handle_app({Name,Incorrect},Data,_Pid,Cmd)->
    %%! Here the tool disappears from the webtool interface!!
    io:format("\n=======ERROR (webtool, line ~w) =======\n"
	      "Could not ~w application \'~p\'\n\n"
	      "Incorrect data: ~p\n\n",
	      [?LINE,Cmd,Name,Incorrect]),
    ets:delete(Data,Name).


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%% this functions creates the page that shows the unstarted tools   %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

reload_started_apps()->
    "<script>
        function reloadCompiledList()
        {
          parent.parent.top1.document.location.href=\"/webtool/webtool/started_tools\";
        }
     </script>".

show_unstarted_apps(State)->
  "<TABLE HEIGHT=100%  WIDTH=100% BORDER=0> 
    <TR HEIGHT=80%><TD ALIGN=\"center\" VALIGN=\"middle\"> 
      <FORM NAME=\"stop_apps\" ACTION=\"/webtool/webtool/start_tools\" >
       <TABLE BORDER=1 WIDTH=60%>
	 <TR BGCOLOR=\"#8899AA\">
	   <TD ALIGN=CENTER COLSPAN=2><FONT SIZE=4>Available Tools<FONT></TD>
	 </TR>
 	<TR>
	   <TD WIDTH=50%>
	       <TABLE BORDER=0>
	           "++ list_available_apps(State)++"
                   <TR><TD COLSPAN=2>&nbsp;</TD></TR>
                   <TR>
                      <TD COLSPAN=2 ALIGN=\"center\">
                         <INPUT TYPE=submit VALUE=\"Start\">
                      </TD>
                   </TR>
                </TABLE>
            </TD>
           <TD>   
             To Start a Tool:
             <UL>
             <LI>Select the
             checkbox for each tool to
             start.</LI>
             <LI>Click on the 
             button marked <EM>Start</EM>.</LI></UL>
            </TD>         
         </TR>
      </TABLE> 
    </FORM>
   </TD></TR>
   <TR><TD>&nbsp;</TD></TR>
   </TABLE>".



list_available_apps(State)->
    MS = ets:fun2ms(fun({Tool,{web_data,{Name,_}}}) -> {Tool,Name} end),
    Unstarted_apps=
	lists:filter(
	  fun({Tool,_})->
		  false==lists:member(Tool,State#state.started)
	  end,
	  ets:select(State#state.app_data,MS)),
    case Unstarted_apps of
	[]->
	    "<TR><TD>All tools are started</TD></TR>";
	_->
	    list_apps(Unstarted_apps)
    end.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                  %%
%% these functions creates the page that shows the started apps     %%
%% the user can select to shutdown                                  %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
show_started_apps(State)->
  "<TABLE HEIGHT=100%  WIDTH=100% BORDER=0> 
    <TR HEIGHT=80%><TD ALIGN=\"center\" VALIGN=\"middle\"> 
      <FORM NAME=\"stop_apps\" ACTION=\"/webtool/webtool/stop_tools\" >
       <TABLE BORDER=1 WIDTH=60%>
	 <TR BGCOLOR=\"#8899AA\">
	   <TD ALIGN=CENTER COLSPAN=2><FONT SIZE=4>Started Tools<FONT></TD>
	 </TR>
 	<TR>
	   <TD WIDTH=50%>
	       <TABLE BORDER=0>
	           "++ list_started_apps(State)++"
                   <TR><TD COLSPAN=2>&nbsp;</TD></TR>
                   <TR>
                      <TD COLSPAN=2 ALIGN=\"center\">
                         <INPUT TYPE=submit VALUE=\"Stop\">
                      </TD>
                   </TR>
                </TABLE>
            </TD>
           <TD>   
             Stop a Tool:
             <UL>
             <LI>Select the
             checkbox for each tool to
             stop.</LI>
             <LI>Click on the 
             button marked <EM>Stop</EM>.</LI></UL>
            </TD>         
         </TR>
      </TABLE> 
    </FORM>
   </TD></TR>
   <TR><TD>&nbsp;</TD></TR>
   </TABLE>".

list_started_apps(State)->
    MS = lists:map(fun(A) -> {{A,{web_data,{'$1','_'}}},[],[{{A,'$1'}}]} end,
		   State#state.started),
    Started_apps= ets:select(State#state.app_data,MS),
    case Started_apps of
	[]->
	    "<TR><TD>No tool is started yet.</TD></TR>";
	_->
	    list_apps(Started_apps)
    end.


list_apps(Apps) ->
      lists:map(fun({Tool,Name})->
			"<TR><TD>
                            <INPUT TYPE=\"checkbox\" NAME=\"app\" VALUE=\""  
			    ++ atom_to_list(Tool) ++ "\">
                               " ++ Name ++ "     
                            </TD></TR>"
		end,
		Apps).


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                                                   %%
%% Collecting the data from the  *.tool files                        %%
%%                                                                   %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------
% get_tools(Dirs) => [{M,F,A},{M,F,A}...{M,F,A}]
%   Dirs - [string()] Directory names
% Calls get_tools2/2 recursively for a number of directories
% to retireve the configuration data for the web based tools.
%----------------------------------------
get_tools1(Dirs)->
    get_tools1(Dirs,[]).

get_tools1([Dir|Rest],Data) when is_list(Dir) ->
    Tools=case filename:basename(Dir) of
	      %% Dir is an 'ebin' directory, check in '../priv' as well
	      "ebin" ->
		  [get_tools2(filename:join(filename:dirname(Dir),"priv")) |
		   get_tools2(Dir)];
	      _ ->
		  get_tools2(Dir)
	  end,
    get_tools1(Rest,[Tools|Data]);

get_tools1([],Data) ->
  lists:flatten(Data).

%----------------------------------------
% get_tools2(Directory) => DataList
%   DataList : [WebTuple]|[]
%   WebTuple: {tool,[{web,M,F,A}]}
%
%----------------------------------------
get_tools2(Dir)->
    get_tools2(tool_files(Dir),[]).

get_tools2([ToolFile|Rest],Data) ->
    case get_tools3(ToolFile) of
	{tool,WebData} ->
	    get_tools2(Rest,[{tool,WebData}|Data]);
	{error,_Reason} ->
	    get_tools2(Rest,Data);
	nodata ->
	    get_tools2(Rest,Data)
    end;

get_tools2([],Data) ->
    Data.

%----------------------------------------
% get_tools3(ToolFile) => {ok,Tool}|{error,Reason}|nodata 
%   Tool: {tool,[KeyValTuple]}
%   ToolFile - string() A .tool file
%   Now we have the file get the data and sort it out
%----------------------------------------
get_tools3(ToolFile) ->
    case file:consult(ToolFile) of
	{error,open} ->
	    {error,nofile};
	{error,read} ->
	    {error,format};
	{ok,[{version,"1.2"},ToolInfo]} when is_list(ToolInfo)->
	    webdata(ToolInfo);
	{ok,[{version,_Vsn},_Info]} ->
	    {error,old_version};
	{ok,_Other} ->
	    {error,format}
    end.


%----------------------------------------------------------------------
% webdata(TupleList)-> ToolTuple| nodata
% ToolTuple: {tool,[{config_func,{M,F,A}}]}
%
% There are a little unneccesary work in this format but it is extendable
%----------------------------------------------------------------------
webdata(TupleList)-> 
    case proplists:get_value(config_func,TupleList,nodata) of
	{M,F,A} ->
	    {tool,[{config_func,{M,F,A}}]};
	_ ->
	   nodata
    end.


%=============================================================================
% Functions for getting *.tool configuration files
%=============================================================================

%----------------------------------------
% tool_files(Dir) => ToolFiles
%   Dir - string() Directory name
%   ToolFiles - [string()]
% Return the list of all files in Dir ending with .tool (appended to Dir)
%----------------------------------------
tool_files(Dir) ->
    case file:list_dir(Dir) of
	{ok,Files} ->
	    filter_tool_files(Dir,Files);
	{error,_Reason} ->
	    []
    end.

%----------------------------------------
% filter_tool_files(Dir,Files) => ToolFiles
%   Dir - string() Directory name
%   Files, ToolFiles - [string()] File names
% Filters out the files in Files ending with .tool and append them to Dir
%----------------------------------------
filter_tool_files(_Dir,[]) ->
    [];
filter_tool_files(Dir,[File|Rest]) ->
    case filename:extension(File) of
	".tool" ->
	    [filename:join(Dir,File)|filter_tool_files(Dir,Rest)];
	_ ->
	    filter_tool_files(Dir,Rest)
    end.


%%%-----------------------------------------------------------------
%%% format functions
ffunc({M,F,A}) when is_list(A) ->
    io_lib:format("~w:~w(~s)\n",[M,F,format_args(A)]);
ffunc({M,F,A}) when is_integer(A) ->
    io_lib:format("~w:~w/~w\n",[M,F,A]).

format_args([]) ->
    "";
format_args(Args) ->
    Str = lists:append(["~p"|lists:duplicate(length(Args)-1,",~p")]),
    io_lib:format(Str,Args).