summaryrefslogtreecommitdiff
path: root/scripts/kconfig/nconf.c
blob: c0b2dabf6c894fcdf6ac1fa651e5506bb7ac1c77 (plain)
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
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com>
 *
 * Derived from menuconfig.
 */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <string.h>
#include <strings.h>
#include <stdlib.h>

#include <list.h>
#include <xalloc.h>
#include "lkc.h"
#include "mnconf-common.h"
#include "nconf.h"
#include <ctype.h>

static const char nconf_global_help[] =
"Help windows\n"
"------------\n"
"o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
"   you the global help window, which you are just reading.\n"
"\n"
"o  A short version of the global help is available by pressing <F3>.\n"
"\n"
"o  Local help:  To get help related to the current menu entry, use any\n"
"   of <?> <h>, or if in a data entry window then press <F1>.\n"
"\n"
"\n"
"Menu entries\n"
"------------\n"
"This interface lets you select features and parameters for the kernel\n"
"build.  Kernel features can either be built-in, modularized, or removed.\n"
"Parameters must be entered as text or decimal or hexadecimal numbers.\n"
"\n"
"Menu entries beginning with following braces represent features that\n"
"  [ ]  can be built in or removed\n"
"  < >  can be built in, modularized or removed\n"
"  { }  can be built in or modularized, are selected by another feature\n"
"  - -  are selected by another feature\n"
"  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
"*, M or whitespace inside braces means to build in, build as a module\n"
"or to exclude the feature respectively.\n"
"\n"
"To change any of these features, highlight it with the movement keys\n"
"listed below and press <y> to build it in, <m> to make it a module or\n"
"<n> to remove it.  You may press the <Space> key to cycle through the\n"
"available options.\n"
"\n"
"A trailing \"--->\" designates a submenu, a trailing \"----\" an\n"
"empty submenu.\n"
"\n"
"Menu navigation keys\n"
"----------------------------------------------------------------------\n"
"Linewise up                 <Up>    <k>\n"
"Linewise down               <Down>  <j>\n"
"Pagewise up                 <Page Up>\n"
"Pagewise down               <Page Down>\n"
"First entry                 <Home>\n"
"Last entry                  <End>\n"
"Enter a submenu             <Right>  <Enter>\n"
"Go back to parent menu      <Left>   <Esc>  <F5>\n"
"Close a help window         <Enter>  <Esc>  <F5>\n"
"Close entry window, apply   <Enter>\n"
"Close entry window, forget  <Esc>  <F5>\n"
"Start incremental, case-insensitive search for STRING in menu entries,\n"
"    no regex support, STRING is displayed in upper left corner\n"
"                            </>STRING\n"
"    Remove last character   <Backspace>\n"
"    Jump to next hit        <Down>\n"
"    Jump to previous hit    <Up>\n"
"Exit menu search mode       </>  <Esc>\n"
"Search for configuration variables with or without leading CONFIG_\n"
"                            <F8>RegExpr<Enter>\n"
"Verbose search help         <F8><F1>\n"
"----------------------------------------------------------------------\n"
"\n"
"Unless in a data entry window, key <1> may be used instead of <F1>,\n"
"<2> instead of <F2>, etc.\n"
"\n"
"\n"
"Radiolist (Choice list)\n"
"-----------------------\n"
"Use the movement keys listed above to select the option you wish to set\n"
"and press <Space>.\n"
"\n"
"\n"
"Data entry\n"
"----------\n"
"Enter the requested information and press <Enter>.  Hexadecimal values\n"
"may be entered without the \"0x\" prefix.\n"
"\n"
"\n"
"Text Box (Help Window)\n"
"----------------------\n"
"Use movement keys as listed in table above.\n"
"\n"
"Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
"\n"
"\n"
"Alternate configuration files\n"
"-----------------------------\n"
"nconfig supports switching between different configurations.\n"
"Press <F6> to save your current configuration.  Press <F7> and enter\n"
"a file name to load a previously saved configuration.\n"
"\n"
"\n"
"Terminal configuration\n"
"----------------------\n"
"If you use nconfig in a xterm window, make sure your TERM environment\n"
"variable specifies a terminal configuration which supports at least\n"
"16 colors.  Otherwise nconfig will look rather bad.\n"
"\n"
"If the \"stty size\" command reports the current terminalsize correctly,\n"
"nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
"and display longer menus properly.\n"
"\n"
"\n"
"Single menu mode\n"
"----------------\n"
"If you prefer to have all of the menu entries listed in a single menu,\n"
"rather than the default multimenu hierarchy, run nconfig with\n"
"NCONFIG_MODE environment variable set to single_menu.  Example:\n"
"\n"
"make NCONFIG_MODE=single_menu nconfig\n"
"\n"
"<Enter> will then unfold the appropriate category, or fold it if it\n"
"is already unfolded.  Folded menu entries will be designated by a\n"
"leading \"++>\" and unfolded entries by a leading \"-->\".\n"
"\n"
"Note that this mode can eventually be a little more CPU expensive than\n"
"the default mode, especially with a larger number of unfolded submenus.\n"
"\n",
menu_no_f_instructions[] =
"Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
"Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
"\n"
"Use the following keys to navigate the menus:\n"
"Move up or down with <Up> and <Down>.\n"
"Enter a submenu with <Enter> or <Right>.\n"
"Exit a submenu to its parent menu with <Esc> or <Left>.\n"
"Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
"Pressing <Space> cycles through the available options.\n"
"To search for menu entries press </>.\n"
"<Esc> always leaves the current window.\n"
"\n"
"You do not have function keys support.\n"
"Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
"For verbose global help use key <1>.\n"
"For help related to the current menu entry press <?> or <h>.\n",
menu_instructions[] =
"Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
"Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
"\n"
"Use the following keys to navigate the menus:\n"
"Move up or down with <Up> or <Down>.\n"
"Enter a submenu with <Enter> or <Right>.\n"
"Exit a submenu to its parent menu with <Esc> or <Left>.\n"
"Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
"Pressing <Space> cycles through the available options.\n"
"To search for menu entries press </>.\n"
"<Esc> always leaves the current window.\n"
"\n"
"Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
"For verbose global help press <F1>.\n"
"For help related to the current menu entry press <?> or <h>.\n",
radiolist_instructions[] =
"Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
"with <Space>.\n"
"For help related to the current entry press <?> or <h>.\n"
"For global help press <F1>.\n",
inputbox_instructions_int[] =
"Please enter a decimal value.\n"
"Fractions will not be accepted.\n"
"Press <Enter> to apply, <Esc> to cancel.",
inputbox_instructions_hex[] =
"Please enter a hexadecimal value.\n"
"Press <Enter> to apply, <Esc> to cancel.",
inputbox_instructions_string[] =
"Please enter a string value.\n"
"Press <Enter> to apply, <Esc> to cancel.",
setmod_text[] =
"This feature depends on another feature which has been configured as a\n"
"module.  As a result, the current feature will be built as a module too.",
load_config_text[] =
"Enter the name of the configuration file you wish to load.\n"
"Accept the name shown to restore the configuration you last\n"
"retrieved.  Leave empty to abort.",
load_config_help[] =
"For various reasons, one may wish to keep several different\n"
"configurations available on a single machine.\n"
"\n"
"If you have saved a previous configuration in a file other than the\n"
"default one, entering its name here will allow you to load and modify\n"
"that configuration.\n"
"\n"
"Leave empty to abort.\n",
save_config_text[] =
"Enter a filename to which this configuration should be saved\n"
"as an alternate.  Leave empty to abort.",
save_config_help[] =
"For various reasons, one may wish to keep several different\n"
"configurations available on a single machine.\n"
"\n"
"Entering a file name here will allow you to later retrieve, modify\n"
"and use the current configuration as an alternate to whatever\n"
"configuration options you have selected at that time.\n"
"\n"
"Leave empty to abort.\n",
search_help[] =
"Search for symbols (configuration variable names CONFIG_*) and display\n"
"their relations.  Regular expressions are supported.\n"
"Example:  Search for \"^FOO\".\n"
"Result:\n"
"-----------------------------------------------------------------\n"
"Symbol: FOO [ = m]\n"
"Prompt: Foo bus is used to drive the bar HW\n"
"Defined at drivers/pci/Kconfig:47\n"
"Depends on: X86_LOCAL_APIC && X86_IO_APIC\n"
"Location:\n"
"  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
"    -> PCI support (PCI [ = y])\n"
"(1)   -> PCI access mode (<choice> [ = y])\n"
"Selects: LIBCRC32\n"
"Selected by: BAR\n"
"-----------------------------------------------------------------\n"
"o  The line 'Prompt:' shows the text displayed for this symbol in\n"
"   the menu hierarchy.\n"
"o  The 'Defined at' line tells at what file / line number the symbol is\n"
"   defined.\n"
"o  The 'Depends on:' line lists symbols that need to be defined for\n"
"   this symbol to be visible and selectable in the menu.\n"
"o  The 'Location:' lines tell, where in the menu structure this symbol\n"
"   is located.\n"
"     A location followed by a [ = y] indicates that this is\n"
"     a selectable menu item, and the current value is displayed inside\n"
"     brackets.\n"
"     Press the key in the (#) prefix to jump directly to that\n"
"     location. You will be returned to the current search results\n"
"     after exiting this new menu.\n"
"o  The 'Selects:' line tells, what symbol will be automatically selected\n"
"   if this symbol is selected (y or m).\n"
"o  The 'Selected by' line tells what symbol has selected this symbol.\n"
"\n"
"Only relevant lines are shown.\n"
"\n\n"
"Search examples:\n"
"USB  => find all symbols containing USB\n"
"^USB => find all symbols starting with USB\n"
"USB$ => find all symbols ending with USB\n"
"\n";

struct mitem {
	char str[256];
	char tag;
	void *usrptr;
	int is_visible;
};

#define MAX_MENU_ITEMS 4096
static int show_all_items;
static int indent;
static struct menu *current_menu;
static int child_count;
static int single_menu_mode;
/* the window in which all information appears */
static WINDOW *main_window;
/* the largest size of the menu window */
static int mwin_max_lines;
static int mwin_max_cols;
/* the window in which we show option buttons */
static MENU *curses_menu;
static ITEM *curses_menu_items[MAX_MENU_ITEMS];
static struct mitem k_menu_items[MAX_MENU_ITEMS];
static unsigned int items_num;
static int global_exit;
/* the currently selected button */
static const char *current_instructions = menu_instructions;

static char *dialog_input_result;
static int dialog_input_result_len;

static void selected_conf(struct menu *menu, struct menu *active_menu);
static void conf(struct menu *menu);
static void conf_choice(struct menu *menu);
static void conf_string(struct menu *menu);
static void conf_load(void);
static void conf_save(void);
static void show_help(struct menu *menu);
static int do_exit(void);
static void setup_windows(void);
static void search_conf(void);

typedef void (*function_key_handler_t)(int *key, struct menu *menu);
static void handle_f1(int *key, struct menu *current_item);
static void handle_f2(int *key, struct menu *current_item);
static void handle_f3(int *key, struct menu *current_item);
static void handle_f4(int *key, struct menu *current_item);
static void handle_f5(int *key, struct menu *current_item);
static void handle_f6(int *key, struct menu *current_item);
static void handle_f7(int *key, struct menu *current_item);
static void handle_f8(int *key, struct menu *current_item);
static void handle_f9(int *key, struct menu *current_item);

struct function_keys {
	const char *key_str;
	const char *func;
	function_key key;
	function_key_handler_t handler;
};

static const int function_keys_num = 9;
static struct function_keys function_keys[] = {
	{
		.key_str = "F1",
		.func = "Help",
		.key = F_HELP,
		.handler = handle_f1,
	},
	{
		.key_str = "F2",
		.func = "SymInfo",
		.key = F_SYMBOL,
		.handler = handle_f2,
	},
	{
		.key_str = "F3",
		.func = "Help 2",
		.key = F_INSTS,
		.handler = handle_f3,
	},
	{
		.key_str = "F4",
		.func = "ShowAll",
		.key = F_CONF,
		.handler = handle_f4,
	},
	{
		.key_str = "F5",
		.func = "Back",
		.key = F_BACK,
		.handler = handle_f5,
	},
	{
		.key_str = "F6",
		.func = "Save",
		.key = F_SAVE,
		.handler = handle_f6,
	},
	{
		.key_str = "F7",
		.func = "Load",
		.key = F_LOAD,
		.handler = handle_f7,
	},
	{
		.key_str = "F8",
		.func = "SymSearch",
		.key = F_SEARCH,
		.handler = handle_f8,
	},
	{
		.key_str = "F9",
		.func = "Exit",
		.key = F_EXIT,
		.handler = handle_f9,
	},
};

static void print_function_line(void)
{
	int i;
	int offset = 1;
	const int skip = 1;
	int lines = getmaxy(stdscr);

	for (i = 0; i < function_keys_num; i++) {
		wattrset(main_window, attr_function_highlight);
		mvwprintw(main_window, lines-3, offset,
				"%s",
				function_keys[i].key_str);
		wattrset(main_window, attr_function_text);
		offset += strlen(function_keys[i].key_str);
		mvwprintw(main_window, lines-3,
				offset, "%s",
				function_keys[i].func);
		offset += strlen(function_keys[i].func) + skip;
	}
	wattrset(main_window, attr_normal);
}

/* help */
static void handle_f1(int *key, struct menu *current_item)
{
	show_scroll_win(main_window,
			"Global help", nconf_global_help);
	return;
}

/* symbole help */
static void handle_f2(int *key, struct menu *current_item)
{
	show_help(current_item);
	return;
}

/* instructions */
static void handle_f3(int *key, struct menu *current_item)
{
	show_scroll_win(main_window,
			"Short help",
			current_instructions);
	return;
}

/* config */
static void handle_f4(int *key, struct menu *current_item)
{
	int res = btn_dialog(main_window,
			"Show all symbols?",
			2,
			"   <Show All>   ",
			"<Don't show all>");
	if (res == 0)
		show_all_items = 1;
	else if (res == 1)
		show_all_items = 0;

	return;
}

/* back */
static void handle_f5(int *key, struct menu *current_item)
{
	*key = KEY_LEFT;
	return;
}

/* save */
static void handle_f6(int *key, struct menu *current_item)
{
	conf_save();
	return;
}

/* load */
static void handle_f7(int *key, struct menu *current_item)
{
	conf_load();
	return;
}

/* search */
static void handle_f8(int *key, struct menu *current_item)
{
	search_conf();
	return;
}

/* exit */
static void handle_f9(int *key, struct menu *current_item)
{
	do_exit();
	return;
}

/* return != 0 to indicate the key was handled */
static int process_special_keys(int *key, struct menu *menu)
{
	int i;

	if (*key == KEY_RESIZE) {
		setup_windows();
		return 1;
	}

	for (i = 0; i < function_keys_num; i++) {
		if (*key == KEY_F(function_keys[i].key) ||
		    *key == '0' + function_keys[i].key){
			function_keys[i].handler(key, menu);
			return 1;
		}
	}

	return 0;
}

static void clean_items(void)
{
	int i;
	for (i = 0; curses_menu_items[i]; i++)
		free_item(curses_menu_items[i]);
	bzero(curses_menu_items, sizeof(curses_menu_items));
	bzero(k_menu_items, sizeof(k_menu_items));
	items_num = 0;
}

typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,
	FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;

/* return the index of the matched item, or -1 if no such item exists */
static int get_mext_match(const char *match_str, match_f flag)
{
	int match_start, index;

	/* Do not search if the menu is empty (i.e. items_num == 0) */
	match_start = item_index(current_item(curses_menu));
	if (match_start == ERR)
		return -1;

	if (flag == FIND_NEXT_MATCH_DOWN)
		++match_start;
	else if (flag == FIND_NEXT_MATCH_UP)
		--match_start;

	match_start = (match_start + items_num) % items_num;
	index = match_start;
	while (true) {
		char *str = k_menu_items[index].str;
		if (strcasestr(str, match_str) != NULL)
			return index;
		if (flag == FIND_NEXT_MATCH_UP ||
		    flag == MATCH_TINKER_PATTERN_UP)
			--index;
		else
			++index;
		index = (index + items_num) % items_num;
		if (index == match_start)
			return -1;
	}
}

/* Make a new item. */
static void item_make(struct menu *menu, char tag, const char *fmt, ...)
{
	va_list ap;

	if (items_num > MAX_MENU_ITEMS-1)
		return;

	bzero(&k_menu_items[items_num], sizeof(k_menu_items[0]));
	k_menu_items[items_num].tag = tag;
	k_menu_items[items_num].usrptr = menu;
	if (menu != NULL)
		k_menu_items[items_num].is_visible =
			menu_is_visible(menu);
	else
		k_menu_items[items_num].is_visible = 1;

	va_start(ap, fmt);
	vsnprintf(k_menu_items[items_num].str,
		  sizeof(k_menu_items[items_num].str),
		  fmt, ap);
	va_end(ap);

	if (!k_menu_items[items_num].is_visible)
		memcpy(k_menu_items[items_num].str, "XXX", 3);

	curses_menu_items[items_num] = new_item(
			k_menu_items[items_num].str,
			k_menu_items[items_num].str);
	set_item_userptr(curses_menu_items[items_num],
			&k_menu_items[items_num]);
	/*
	if (!k_menu_items[items_num].is_visible)
		item_opts_off(curses_menu_items[items_num], O_SELECTABLE);
	*/

	items_num++;
	curses_menu_items[items_num] = NULL;
}

/* very hackish. adds a string to the last item added */
static void item_add_str(const char *fmt, ...)
{
	va_list ap;
	int index = items_num-1;
	char new_str[256];
	char tmp_str[256];

	if (index < 0)
		return;

	va_start(ap, fmt);
	vsnprintf(new_str, sizeof(new_str), fmt, ap);
	va_end(ap);
	snprintf(tmp_str, sizeof(tmp_str), "%s%s",
			k_menu_items[index].str, new_str);
	strncpy(k_menu_items[index].str,
		tmp_str,
		sizeof(k_menu_items[index].str));

	free_item(curses_menu_items[index]);
	curses_menu_items[index] = new_item(
			k_menu_items[index].str,
			k_menu_items[index].str);
	set_item_userptr(curses_menu_items[index],
			&k_menu_items[index]);
}

/* get the tag of the currently selected item */
static char item_tag(void)
{
	ITEM *cur;
	struct mitem *mcur;

	cur = current_item(curses_menu);
	if (cur == NULL)
		return 0;
	mcur = (struct mitem *) item_userptr(cur);
	return mcur->tag;
}

static int curses_item_index(void)
{
	return  item_index(current_item(curses_menu));
}

static void *item_data(void)
{
	ITEM *cur;
	struct mitem *mcur;

	cur = current_item(curses_menu);
	if (!cur)
		return NULL;
	mcur = (struct mitem *) item_userptr(cur);
	return mcur->usrptr;

}

static int item_is_tag(char tag)
{
	return item_tag() == tag;
}

static char filename[PATH_MAX+1];
static char menu_backtitle[PATH_MAX+128];
static void set_config_filename(const char *config_filename)
{
	snprintf(menu_backtitle, sizeof(menu_backtitle), "%s - %s",
		 config_filename, rootmenu.prompt->text);

	snprintf(filename, sizeof(filename), "%s", config_filename);
}

/* return = 0 means we are successful.
 * -1 means go on doing what you were doing
 */
static int do_exit(void)
{
	int res;
	if (!conf_get_changed()) {
		global_exit = 1;
		return 0;
	}
	res = btn_dialog(main_window,
			"Do you wish to save your new configuration?\n"
				"<ESC> to cancel and resume nconfig.",
			2,
			"   <save>   ",
			"<don't save>");
	if (res == KEY_EXIT) {
		global_exit = 0;
		return -1;
	}

	/* if we got here, the user really wants to exit */
	switch (res) {
	case 0:
		res = conf_write(filename);
		if (res)
			btn_dialog(
				main_window,
				"Error during writing of configuration.\n"
				  "Your configuration changes were NOT saved.",
				  1,
				  "<OK>");
		conf_write_autoconf(0);
		break;
	default:
		btn_dialog(
			main_window,
			"Your configuration changes were NOT saved.",
			1,
			"<OK>");
		break;
	}
	global_exit = 1;
	return 0;
}


static void search_conf(void)
{
	struct symbol **sym_arr;
	struct gstr res;
	struct gstr title;
	char *dialog_input;
	int dres, vscroll = 0, hscroll = 0;
	bool again;

	title = str_new();
	str_printf( &title, "Enter (sub)string or regexp to search for "
			      "(with or without \"%s\")", CONFIG_);

again:
	dres = dialog_inputbox(main_window,
			"Search Configuration Parameter",
			str_get(&title),
			"", &dialog_input_result, &dialog_input_result_len);
	switch (dres) {
	case 0:
		break;
	case 1:
		show_scroll_win(main_window,
				"Search Configuration", search_help);
		goto again;
	default:
		str_free(&title);
		return;
	}

	/* strip the prefix if necessary */
	dialog_input = dialog_input_result;
	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
		dialog_input += strlen(CONFIG_);

	sym_arr = sym_re_search(dialog_input);

	do {
		LIST_HEAD(head);
		struct search_data data = {
			.head = &head,
			.target = NULL,
		};
		jump_key_char = 0;
		res = get_relations_str(sym_arr, &head);
		dres = show_scroll_win_ext(main_window,
				"Search Results", str_get(&res),
				&vscroll, &hscroll,
				handle_search_keys, &data);
		again = false;
		if (dres >= '1' && dres <= '9') {
			assert(data.target != NULL);
			selected_conf(data.target->parent, data.target);
			again = true;
		}
		str_free(&res);
	} while (again);
	free(sym_arr);
	str_free(&title);
}


static void build_conf(struct menu *menu)
{
	struct symbol *sym;
	struct property *prop;
	struct menu *child;
	int type, tmp, doint = 2;
	tristate val;
	char ch;

	if (!menu || (!show_all_items && !menu_is_visible(menu)))
		return;

	sym = menu->sym;
	prop = menu->prompt;
	if (!sym) {
		if (prop && menu != current_menu) {
			const char *prompt = menu_get_prompt(menu);
			enum prop_type ptype;
			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
			switch (ptype) {
			case P_MENU:
				child_count++;
				if (single_menu_mode) {
					item_make(menu, 'm',
						"%s%*c%s",
						menu->data ? "-->" : "++>",
						indent + 1, ' ', prompt);
				} else
					item_make(menu, 'm',
						  "   %*c%s  %s",
						  indent + 1, ' ', prompt,
						  menu_is_empty(menu) ? "----" : "--->");

				if (single_menu_mode && menu->data)
					goto conf_childs;
				return;
			case P_COMMENT:
				if (prompt) {
					child_count++;
					item_make(menu, ':',
						"   %*c*** %s ***",
						indent + 1, ' ',
						prompt);
				}
				break;
			default:
				if (prompt) {
					child_count++;
					item_make(menu, ':', "---%*c%s",
						indent + 1, ' ',
						prompt);
				}
			}
		} else
			doint = 0;
		goto conf_childs;
	}

	type = sym_get_type(sym);
	if (sym_is_choice(sym)) {
		struct symbol *def_sym = sym_calc_choice(menu);
		struct menu *def_menu = NULL;

		child_count++;
		for (child = menu->list; child; child = child->next) {
			if (menu_is_visible(child) && child->sym == def_sym)
				def_menu = child;
		}

		val = sym_get_tristate_value(sym);
		item_make(menu, def_menu ? 't' : ':', "   ");

		item_add_str("%*c%s", indent + 1,
				' ', menu_get_prompt(menu));
		if (def_menu)
			item_add_str(" (%s)  --->", menu_get_prompt(def_menu));
		return;
	} else {
		if (menu == current_menu) {
			item_make(menu, ':',
				"---%*c%s", indent + 1,
				' ', menu_get_prompt(menu));
			goto conf_childs;
		}
		child_count++;
		val = sym_get_tristate_value(sym);
		switch (type) {
		case S_BOOLEAN:
			if (sym_is_changeable(sym))
				item_make(menu, 't', "[%c]",
					  val == no ? ' ' : '*');
			else
				item_make(menu, 't', "-%c-",
					  val == no ? ' ' : '*');
			break;
		case S_TRISTATE:
			switch (val) {
			case yes:
				ch = '*';
				break;
			case mod:
				ch = 'M';
				break;
			default:
				ch = ' ';
				break;
			}
			if (sym_is_changeable(sym)) {
				if (sym->rev_dep.tri == mod)
					item_make(menu, 't', "{%c}", ch);
				else
					item_make(menu, 't', "<%c>", ch);
			} else
				item_make(menu, 't', "-%c-", ch);
			break;
		default:
			tmp = 2 + strlen(sym_get_string_value(sym));
			item_make(menu, 's', "    (%s)",
				  sym_get_string_value(sym));
			tmp = indent - tmp + 4;
			if (tmp < 0)
				tmp = 0;
			item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
				     (sym_has_value(sym) ||
				      !sym_is_changeable(sym)) ? "" : " (NEW)");
			goto conf_childs;
		}
		item_add_str("%*c%s%s", indent + 1, ' ',
				menu_get_prompt(menu),
				(sym_has_value(sym) || !sym_is_changeable(sym)) ?
				"" : " (NEW)");
		if (menu->prompt && menu->prompt->type == P_MENU) {
			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
			return;
		}
	}

conf_childs:
	indent += doint;
	for (child = menu->list; child; child = child->next)
		build_conf(child);
	indent -= doint;
}

static void reset_menu(void)
{
	unpost_menu(curses_menu);
	clean_items();
}

/* adjust the menu to show this item.
 * prefer not to scroll the menu if possible*/
static void center_item(int selected_index, int *last_top_row)
{
	int toprow;

	set_top_row(curses_menu, *last_top_row);
	toprow = top_row(curses_menu);
	if (selected_index < toprow ||
	    selected_index >= toprow+mwin_max_lines) {
		toprow = max(selected_index-mwin_max_lines/2, 0);
		if (toprow >= item_count(curses_menu)-mwin_max_lines)
			toprow = item_count(curses_menu)-mwin_max_lines;
		set_top_row(curses_menu, toprow);
	}
	set_current_item(curses_menu,
			curses_menu_items[selected_index]);
	*last_top_row = toprow;
	post_menu(curses_menu);
	refresh_all_windows(main_window);
}

/* this function assumes reset_menu has been called before */
static void show_menu(const char *prompt, const char *instructions,
		int selected_index, int *last_top_row)
{
	int maxx, maxy;
	WINDOW *menu_window;

	current_instructions = instructions;

	clear();
	print_in_middle(stdscr, 1, getmaxx(stdscr),
			menu_backtitle,
			attr_main_heading);

	wattrset(main_window, attr_main_menu_box);
	box(main_window, 0, 0);
	wattrset(main_window, attr_main_menu_heading);
	mvwprintw(main_window, 0, 3, " %s ", prompt);
	wattrset(main_window, attr_normal);

	set_menu_items(curses_menu, curses_menu_items);

	/* position the menu at the middle of the screen */
	scale_menu(curses_menu, &maxy, &maxx);
	maxx = min(maxx, mwin_max_cols-2);
	maxy = mwin_max_lines;
	menu_window = derwin(main_window,
			maxy,
			maxx,
			2,
			(mwin_max_cols-maxx)/2);
	keypad(menu_window, TRUE);
	set_menu_win(curses_menu, menu_window);
	set_menu_sub(curses_menu, menu_window);

	/* must reassert this after changing items, otherwise returns to a
	 * default of 16
	 */
	set_menu_format(curses_menu, maxy, 1);
	center_item(selected_index, last_top_row);
	set_menu_format(curses_menu, maxy, 1);

	print_function_line();

	/* Post the menu */
	post_menu(curses_menu);
	refresh_all_windows(main_window);
}

static void adj_match_dir(match_f *match_direction)
{
	if (*match_direction == FIND_NEXT_MATCH_DOWN)
		*match_direction =
			MATCH_TINKER_PATTERN_DOWN;
	else if (*match_direction == FIND_NEXT_MATCH_UP)
		*match_direction =
			MATCH_TINKER_PATTERN_UP;
	/* else, do no change.. */
}

struct match_state
{
	int in_search;
	match_f match_direction;
	char pattern[256];
};

/* Return 0 means I have handled the key. In such a case, ans should hold the
 * item to center, or -1 otherwise.
 * Else return -1 .
 */
static int do_match(int key, struct match_state *state, int *ans)
{
	char c = (char) key;
	int terminate_search = 0;
	*ans = -1;
	if (key == '/' || (state->in_search && key == 27)) {
		move(0, 0);
		refresh();
		clrtoeol();
		state->in_search = 1-state->in_search;
		bzero(state->pattern, sizeof(state->pattern));
		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
		return 0;
	} else if (!state->in_search)
		return 1;

	if (isalnum(c) || isgraph(c) || c == ' ') {
		state->pattern[strlen(state->pattern)] = c;
		state->pattern[strlen(state->pattern)] = '\0';
		adj_match_dir(&state->match_direction);
		*ans = get_mext_match(state->pattern,
				state->match_direction);
	} else if (key == KEY_DOWN) {
		state->match_direction = FIND_NEXT_MATCH_DOWN;
		*ans = get_mext_match(state->pattern,
				state->match_direction);
	} else if (key == KEY_UP) {
		state->match_direction = FIND_NEXT_MATCH_UP;
		*ans = get_mext_match(state->pattern,
				state->match_direction);
	} else if (key == KEY_BACKSPACE || key == 8 || key == 127) {
		state->pattern[strlen(state->pattern)-1] = '\0';
		adj_match_dir(&state->match_direction);
	} else
		terminate_search = 1;

	if (terminate_search) {
		state->in_search = 0;
		bzero(state->pattern, sizeof(state->pattern));
		move(0, 0);
		refresh();
		clrtoeol();
		return -1;
	}
	return 0;
}

static void conf(struct menu *menu)
{
	selected_conf(menu, NULL);
}

static void selected_conf(struct menu *menu, struct menu *active_menu)
{
	struct menu *submenu = NULL;
	struct symbol *sym;
	int i, res;
	int current_index = 0;
	int last_top_row = 0;
	struct match_state match_state = {
		.in_search = 0,
		.match_direction = MATCH_TINKER_PATTERN_DOWN,
		.pattern = "",
	};

	while (!global_exit) {
		reset_menu();
		current_menu = menu;
		build_conf(menu);
		if (!child_count)
			break;

		if (active_menu != NULL) {
			for (i = 0; i < items_num; i++) {
				struct mitem *mcur;

				mcur = (struct mitem *) item_userptr(curses_menu_items[i]);
				if ((struct menu *) mcur->usrptr == active_menu) {
					current_index = i;
					break;
				}
			}
			active_menu = NULL;
		}

		show_menu(menu_get_prompt(menu), menu_instructions,
			  current_index, &last_top_row);
		keypad((menu_win(curses_menu)), TRUE);
		while (!global_exit) {
			if (match_state.in_search) {
				mvprintw(0, 0,
					"searching: %s", match_state.pattern);
				clrtoeol();
			}
			refresh_all_windows(main_window);
			res = wgetch(menu_win(curses_menu));
			if (!res)
				break;
			if (do_match(res, &match_state, &current_index) == 0) {
				if (current_index != -1)
					center_item(current_index,
						    &last_top_row);
				continue;
			}
			if (process_special_keys(&res,
						(struct menu *) item_data()))
				break;
			switch (res) {
			case KEY_DOWN:
			case 'j':
				menu_driver(curses_menu, REQ_DOWN_ITEM);
				break;
			case KEY_UP:
			case 'k':
				menu_driver(curses_menu, REQ_UP_ITEM);
				break;
			case KEY_NPAGE:
				menu_driver(curses_menu, REQ_SCR_DPAGE);
				break;
			case KEY_PPAGE:
				menu_driver(curses_menu, REQ_SCR_UPAGE);
				break;
			case KEY_HOME:
				menu_driver(curses_menu, REQ_FIRST_ITEM);
				break;
			case KEY_END:
				menu_driver(curses_menu, REQ_LAST_ITEM);
				break;
			case 'h':
			case '?':
				show_help((struct menu *) item_data());
				break;
			}
			if (res == 10 || res == 27 ||
				res == 32 || res == 'n' || res == 'y' ||
				res == KEY_LEFT || res == KEY_RIGHT ||
				res == 'm')
				break;
			refresh_all_windows(main_window);
		}

		refresh_all_windows(main_window);
		/* if ESC or left*/
		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
			break;

		/* remember location in the menu */
		last_top_row = top_row(curses_menu);
		current_index = curses_item_index();

		if (!item_tag())
			continue;

		submenu = (struct menu *) item_data();
		if (!submenu || !menu_is_visible(submenu))
			continue;
		sym = submenu->sym;

		switch (res) {
		case ' ':
			if (item_is_tag('t'))
				sym_toggle_tristate_value(sym);
			else if (item_is_tag('m'))
				conf(submenu);
			break;
		case KEY_RIGHT:
		case 10: /* ENTER WAS PRESSED */
			switch (item_tag()) {
			case 'm':
				if (single_menu_mode)
					submenu->data =
						(void *) (long) !submenu->data;
				else
					conf(submenu);
				break;
			case 't':
				if (sym_is_choice(sym))
					conf_choice(submenu);
				else if (submenu->prompt &&
					 submenu->prompt->type == P_MENU)
					conf(submenu);
				else if (res == 10)
					sym_toggle_tristate_value(sym);
				break;
			case 's':
				conf_string(submenu);
				break;
			}
			break;
		case 'y':
			if (item_is_tag('t')) {
				if (sym_set_tristate_value(sym, yes))
					break;
				if (sym_set_tristate_value(sym, mod))
					btn_dialog(main_window, setmod_text, 0);
			}
			break;
		case 'n':
			if (item_is_tag('t'))
				sym_set_tristate_value(sym, no);
			break;
		case 'm':
			if (item_is_tag('t'))
				sym_set_tristate_value(sym, mod);
			break;
		}
	}
}

static void conf_message_callback(const char *s)
{
	btn_dialog(main_window, s, 1, "<OK>");
}

static void show_help(struct menu *menu)
{
	struct gstr help;

	if (!menu)
		return;

	help = str_new();
	menu_get_ext_help(menu, &help);
	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
	str_free(&help);
}

static void conf_choice(struct menu *menu)
{
	const char *prompt = menu_get_prompt(menu);
	struct menu *child = NULL;
	struct symbol *active;
	int selected_index = 0;
	int last_top_row = 0;
	int res, i = 0;
	struct match_state match_state = {
		.in_search = 0,
		.match_direction = MATCH_TINKER_PATTERN_DOWN,
		.pattern = "",
	};

	active = sym_calc_choice(menu);
	/* this is mostly duplicated from the conf() function. */
	while (!global_exit) {
		reset_menu();

		for (i = 0, child = menu->list; child; child = child->next) {
			if (!show_all_items && !menu_is_visible(child))
				continue;

			if (child->sym == sym_calc_choice(menu))
				item_make(child, ':', "<X> %s",
						menu_get_prompt(child));
			else if (child->sym)
				item_make(child, ':', "    %s",
						menu_get_prompt(child));
			else
				item_make(child, ':', "*** %s ***",
						menu_get_prompt(child));

			if (child->sym == active){
				last_top_row = top_row(curses_menu);
				selected_index = i;
			}
			i++;
		}
		show_menu(prompt ? prompt : "Choice Menu",
				radiolist_instructions,
				selected_index,
				&last_top_row);
		while (!global_exit) {
			if (match_state.in_search) {
				mvprintw(0, 0, "searching: %s",
					 match_state.pattern);
				clrtoeol();
			}
			refresh_all_windows(main_window);
			res = wgetch(menu_win(curses_menu));
			if (!res)
				break;
			if (do_match(res, &match_state, &selected_index) == 0) {
				if (selected_index != -1)
					center_item(selected_index,
						    &last_top_row);
				continue;
			}
			if (process_special_keys(
						&res,
						(struct menu *) item_data()))
				break;
			switch (res) {
			case KEY_DOWN:
			case 'j':
				menu_driver(curses_menu, REQ_DOWN_ITEM);
				break;
			case KEY_UP:
			case 'k':
				menu_driver(curses_menu, REQ_UP_ITEM);
				break;
			case KEY_NPAGE:
				menu_driver(curses_menu, REQ_SCR_DPAGE);
				break;
			case KEY_PPAGE:
				menu_driver(curses_menu, REQ_SCR_UPAGE);
				break;
			case KEY_HOME:
				menu_driver(curses_menu, REQ_FIRST_ITEM);
				break;
			case KEY_END:
				menu_driver(curses_menu, REQ_LAST_ITEM);
				break;
			case 'h':
			case '?':
				show_help((struct menu *) item_data());
				break;
			}
			if (res == 10 || res == 27 || res == ' ' ||
					res == KEY_LEFT){
				break;
			}
			refresh_all_windows(main_window);
		}
		/* if ESC or left */
		if (res == 27 || res == KEY_LEFT)
			break;

		child = item_data();
		if (!child || !menu_is_visible(child) || !child->sym)
			continue;
		switch (res) {
		case ' ':
		case  10:
		case KEY_RIGHT:
			choice_set_value(menu, child->sym);
			return;
		case 'h':
		case '?':
			show_help(child);
			active = child->sym;
			break;
		case KEY_EXIT:
			return;
		}
	}
}

static void conf_string(struct menu *menu)
{
	const char *prompt = menu_get_prompt(menu);

	while (1) {
		int res;
		const char *heading;

		switch (sym_get_type(menu->sym)) {
		case S_INT:
			heading = inputbox_instructions_int;
			break;
		case S_HEX:
			heading = inputbox_instructions_hex;
			break;
		case S_STRING:
			heading = inputbox_instructions_string;
			break;
		default:
			heading = "Internal nconf error!";
		}
		res = dialog_inputbox(main_window,
				prompt ? prompt : "Main Menu",
				heading,
				sym_get_string_value(menu->sym),
				&dialog_input_result,
				&dialog_input_result_len);
		switch (res) {
		case 0:
			if (sym_set_string_value(menu->sym,
						dialog_input_result))
				return;
			btn_dialog(main_window,
				"You have made an invalid entry.", 0);
			break;
		case 1:
			show_help(menu);
			break;
		case KEY_EXIT:
			return;
		}
	}
}

static void conf_load(void)
{
	while (1) {
		int res;
		res = dialog_inputbox(main_window,
				NULL, load_config_text,
				filename,
				&dialog_input_result,
				&dialog_input_result_len);
		switch (res) {
		case 0:
			if (!dialog_input_result[0])
				return;
			if (!conf_read(dialog_input_result)) {
				set_config_filename(dialog_input_result);
				conf_set_changed(true);
				return;
			}
			btn_dialog(main_window, "File does not exist!", 0);
			break;
		case 1:
			show_scroll_win(main_window,
					"Load Alternate Configuration",
					load_config_help);
			break;
		case KEY_EXIT:
			return;
		}
	}
}

static void conf_save(void)
{
	while (1) {
		int res;
		res = dialog_inputbox(main_window,
				NULL, save_config_text,
				filename,
				&dialog_input_result,
				&dialog_input_result_len);
		switch (res) {
		case 0:
			if (!dialog_input_result[0])
				return;
			res = conf_write(dialog_input_result);
			if (!res) {
				set_config_filename(dialog_input_result);
				return;
			}
			btn_dialog(main_window, "Can't create file!",
				1, "<OK>");
			break;
		case 1:
			show_scroll_win(main_window,
				"Save Alternate Configuration",
				save_config_help);
			break;
		case KEY_EXIT:
			return;
		}
	}
}

static void setup_windows(void)
{
	int lines, columns;

	getmaxyx(stdscr, lines, columns);

	if (main_window != NULL)
		delwin(main_window);

	/* set up the menu and menu window */
	main_window = newwin(lines-2, columns-2, 2, 1);
	keypad(main_window, TRUE);
	mwin_max_lines = lines-7;
	mwin_max_cols = columns-6;

	/* panels order is from bottom to top */
	new_panel(main_window);
}

int main(int ac, char **av)
{
	int lines, columns;
	char *mode;

	if (ac > 1 && strcmp(av[1], "-s") == 0) {
		/* Silence conf_read() until the real callback is set up */
		conf_set_message_callback(NULL);
		av++;
	}
	conf_parse(av[1]);
	conf_read(NULL);

	mode = getenv("NCONFIG_MODE");
	if (mode) {
		if (!strcasecmp(mode, "single_menu"))
			single_menu_mode = 1;
	}

	/* Initialize curses */
	initscr();
	/* set color theme */
	set_colors();

	cbreak();
	noecho();
	keypad(stdscr, TRUE);
	curs_set(0);

	getmaxyx(stdscr, lines, columns);
	if (columns < 75 || lines < 20) {
		endwin();
		printf("Your terminal should have at "
			"least 20 lines and 75 columns\n");
		return 1;
	}

	notimeout(stdscr, FALSE);
#if NCURSES_REENTRANT
	set_escdelay(1);
#else
	ESCDELAY = 1;
#endif

	/* set btns menu */
	curses_menu = new_menu(curses_menu_items);
	menu_opts_off(curses_menu, O_SHOWDESC);
	menu_opts_on(curses_menu, O_SHOWMATCH);
	menu_opts_on(curses_menu, O_ONEVALUE);
	menu_opts_on(curses_menu, O_NONCYCLIC);
	menu_opts_on(curses_menu, O_IGNORECASE);
	set_menu_mark(curses_menu, " ");
	set_menu_fore(curses_menu, attr_main_menu_fore);
	set_menu_back(curses_menu, attr_main_menu_back);
	set_menu_grey(curses_menu, attr_main_menu_grey);

	set_config_filename(conf_get_configname());
	setup_windows();

	/* check for KEY_FUNC(1) */
	if (has_key(KEY_F(1)) == FALSE) {
		show_scroll_win(main_window,
				"Instructions",
				menu_no_f_instructions);
	}

	conf_set_message_callback(conf_message_callback);
	/* do the work */
	while (!global_exit) {
		conf(&rootmenu);
		if (!global_exit && do_exit() == 0)
			break;
	}
	/* ok, we are done */
	unpost_menu(curses_menu);
	free_menu(curses_menu);
	delwin(main_window);
	clear();
	refresh();
	endwin();
	return 0;
}