File: dump_entry.c

package info (click to toggle)
ncurses 6.1+20181013-2+deb10u2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 20,876 kB
  • sloc: ansic: 86,900; ada: 10,312; sh: 5,740; cpp: 4,396; makefile: 3,140; awk: 1,564; perl: 209; sed: 39
file content (1772 lines) | stat: -rw-r--r-- 43,202 bytes parent folder | download
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
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
/****************************************************************************
 * Copyright (c) 1998-2016,2017 Free Software Foundation, Inc.              *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 *     and: Thomas E. Dickey                        1996 on                 *
 ****************************************************************************/

#define __INTERNAL_CAPS_VISIBLE
#include <progs.priv.h>

#include "dump_entry.h"
#include "termsort.c"		/* this C file is generated */
#include <parametrized.h>	/* so is this */

MODULE_ID("$Id: dump_entry.c,v 1.168 2017/09/02 21:01:54 tom Exp $")

#define DISCARD(string) string = ABSENT_STRING
#define PRINTF (void) printf
#define WRAPPED 32

#define OkIndex(index,array) ((int)(index) >= 0 && (int)(index) < (int) SIZEOF(array))
#define TcOutput() (outform == F_TERMCAP || outform == F_TCONVERR)

typedef struct {
    char *text;
    size_t used;
    size_t size;
} DYNBUF;

static int tversion;		/* terminfo version */
static int outform;		/* output format to use */
static int sortmode;		/* sort mode to use */
static int width = 60;		/* max line width for listings */
static int height = 65535;	/* max number of lines for listings */
static int column;		/* current column, limited by 'width' */
static int oldcol;		/* last value of column before wrap */
static bool pretty;		/* true if we format if-then-else strings */
static bool wrapped;		/* true if we wrap too-long strings */
static bool did_wrap;		/* true if last wrap_concat did wrapping */
static bool checking;		/* true if we are checking for tic */
static int quickdump;		/* true if we are dumping compiled data */

static char *save_sgr;

static DYNBUF outbuf;
static DYNBUF tmpbuf;

/* indirection pointers for implementing sort and display modes */
static const PredIdx *bool_indirect, *num_indirect, *str_indirect;
static NCURSES_CONST char *const *bool_names;
static NCURSES_CONST char *const *num_names;
static NCURSES_CONST char *const *str_names;

static const char *separator = "", *trailer = "";
static int indent = 8;

/* cover various ports and variants of terminfo */
#define V_ALLCAPS	0	/* all capabilities (SVr4, XSI, ncurses) */
#define V_SVR1		1	/* SVR1, Ultrix */
#define V_HPUX		2	/* HP/UX */
#define V_AIX		3	/* AIX */
#define V_BSD		4	/* BSD */

#if NCURSES_XNAMES
#define OBSOLETE(n) (!_nc_user_definable && (n[0] == 'O' && n[1] == 'T'))
#else
#define OBSOLETE(n) (n[0] == 'O' && n[1] == 'T')
#endif

#define isObsolete(f,n) ((f == F_TERMINFO || f == F_VARIABLE) && OBSOLETE(n))

#if NCURSES_XNAMES
#define BoolIndirect(j) ((j >= BOOLCOUNT) ? (j) : ((sortmode == S_NOSORT) ? j : bool_indirect[j]))
#define NumIndirect(j)  ((j >= NUMCOUNT)  ? (j) : ((sortmode == S_NOSORT) ? j : num_indirect[j]))
#define StrIndirect(j)  ((j >= STRCOUNT)  ? (j) : ((sortmode == S_NOSORT) ? j : str_indirect[j]))
#else
#define BoolIndirect(j) ((sortmode == S_NOSORT) ? (j) : bool_indirect[j])
#define NumIndirect(j)  ((sortmode == S_NOSORT) ? (j) : num_indirect[j])
#define StrIndirect(j)  ((sortmode == S_NOSORT) ? (j) : str_indirect[j])
#endif

static void failed(const char *) GCC_NORETURN;

static void
failed(const char *s)
{
    perror(s);
    ExitProgram(EXIT_FAILURE);
}

static void
strncpy_DYN(DYNBUF * dst, const char *src, size_t need)
{
    size_t want = need + dst->used + 1;
    if (want > dst->size) {
	dst->size += (want + 1024);	/* be generous */
	dst->text = typeRealloc(char, dst->size, dst->text);
	if (dst->text == 0)
	    failed("strncpy_DYN");
    }
    _nc_STRNCPY(dst->text + dst->used, src, need + 1);
    dst->used += need;
    dst->text[dst->used] = 0;
}

static void
strcpy_DYN(DYNBUF * dst, const char *src)
{
    if (src == 0) {
	dst->used = 0;
	strcpy_DYN(dst, "");
    } else {
	strncpy_DYN(dst, src, strlen(src));
    }
}

#if NO_LEAKS
static void
free_DYN(DYNBUF * p)
{
    if (p->text != 0)
	free(p->text);
    p->text = 0;
    p->size = 0;
    p->used = 0;
}

void
_nc_leaks_dump_entry(void)
{
    free_DYN(&outbuf);
    free_DYN(&tmpbuf);
}
#endif

#define NameTrans(check,result) \
	    if ((np->nte_index <= OK_ ## check) \
		&& check[np->nte_index]) \
		return (result[np->nte_index])

NCURSES_CONST char *
nametrans(const char *name)
/* translate a capability name to termcap from terminfo */
{
    const struct name_table_entry *np;

    if ((np = _nc_find_entry(name, _nc_get_hash_table(0))) != 0) {
	switch (np->nte_type) {
	case BOOLEAN:
	    NameTrans(bool_from_termcap, boolcodes);
	    break;

	case NUMBER:
	    NameTrans(num_from_termcap, numcodes);
	    break;

	case STRING:
	    NameTrans(str_from_termcap, strcodes);
	    break;
	}
    }

    return (0);
}

void
dump_init(const char *version,
	  int mode,
	  int sort,
	  bool wrap_strings,
	  int twidth,
	  int theight,
	  unsigned traceval,
	  bool formatted,
	  bool check,
	  int quick)
/* set up for entry display */
{
    width = twidth;
    height = theight;
    pretty = formatted;
    wrapped = wrap_strings;
    checking = check;
    quickdump = (quick & 3);

    did_wrap = (width <= 0);

    /* versions */
    if (version == 0)
	tversion = V_ALLCAPS;
    else if (!strcmp(version, "SVr1") || !strcmp(version, "SVR1")
	     || !strcmp(version, "Ultrix"))
	tversion = V_SVR1;
    else if (!strcmp(version, "HP"))
	tversion = V_HPUX;
    else if (!strcmp(version, "AIX"))
	tversion = V_AIX;
    else if (!strcmp(version, "BSD"))
	tversion = V_BSD;
    else
	tversion = V_ALLCAPS;

    /* implement display modes */
    switch (outform = mode) {
    case F_LITERAL:
    case F_TERMINFO:
	bool_names = boolnames;
	num_names = numnames;
	str_names = strnames;
	separator = (twidth > 0 && theight > 1) ? ", " : ",";
	trailer = "\n\t";
	break;

    case F_VARIABLE:
	bool_names = boolfnames;
	num_names = numfnames;
	str_names = strfnames;
	separator = (twidth > 0 && theight > 1) ? ", " : ",";
	trailer = "\n\t";
	break;

    case F_TERMCAP:
    case F_TCONVERR:
	bool_names = boolcodes;
	num_names = numcodes;
	str_names = strcodes;
	separator = ":";
	trailer = "\\\n\t:";
	break;
    }
    indent = 8;

    /* implement sort modes */
    switch (sortmode = sort) {
    case S_NOSORT:
	if (traceval)
	    (void) fprintf(stderr,
			   "%s: sorting by term structure order\n", _nc_progname);
	break;

    case S_TERMINFO:
	if (traceval)
	    (void) fprintf(stderr,
			   "%s: sorting by terminfo name order\n", _nc_progname);
	bool_indirect = bool_terminfo_sort;
	num_indirect = num_terminfo_sort;
	str_indirect = str_terminfo_sort;
	break;

    case S_VARIABLE:
	if (traceval)
	    (void) fprintf(stderr,
			   "%s: sorting by C variable order\n", _nc_progname);
	bool_indirect = bool_variable_sort;
	num_indirect = num_variable_sort;
	str_indirect = str_variable_sort;
	break;

    case S_TERMCAP:
	if (traceval)
	    (void) fprintf(stderr,
			   "%s: sorting by termcap name order\n", _nc_progname);
	bool_indirect = bool_termcap_sort;
	num_indirect = num_termcap_sort;
	str_indirect = str_termcap_sort;
	break;
    }

    if (traceval)
	(void) fprintf(stderr,
		       "%s: width = %d, tversion = %d, outform = %d\n",
		       _nc_progname, width, tversion, outform);
}

static TERMTYPE2 *cur_type;

static int
dump_predicate(PredType type, PredIdx idx)
/* predicate function to use for ordinary decompilation */
{
    switch (type) {
    case BOOLEAN:
	return (cur_type->Booleans[idx] == FALSE)
	    ? FAIL : cur_type->Booleans[idx];

    case NUMBER:
	return (cur_type->Numbers[idx] == ABSENT_NUMERIC)
	    ? FAIL : cur_type->Numbers[idx];

    case STRING:
	return (cur_type->Strings[idx] != ABSENT_STRING)
	    ? (int) TRUE : FAIL;
    }

    return (FALSE);		/* pacify compiler */
}

static void set_obsolete_termcaps(TERMTYPE2 *tp);

/* is this the index of a function key string? */
#define FNKEY(i) \
    (((i) >= STR_IDX(key_f0) && \
      (i) <= STR_IDX(key_f9)) || \
     ((i) >= STR_IDX(key_f11) && \
      (i) <= STR_IDX(key_f63)))

/*
 * If we configure with a different Caps file, the offsets into the arrays
 * will change.  So we use an address expression.
 */
#define BOOL_IDX(name) (PredType) (&(name) - &(CUR Booleans[0]))
#define NUM_IDX(name)  (PredType) (&(name) - &(CUR Numbers[0]))
#define STR_IDX(name)  (PredType) (&(name) - &(CUR Strings[0]))

static bool
version_filter(PredType type, PredIdx idx)
/* filter out capabilities we may want to suppress */
{
    switch (tversion) {
    case V_ALLCAPS:		/* SVr4, XSI Curses */
	return (TRUE);

    case V_SVR1:		/* System V Release 1, Ultrix */
	switch (type) {
	case BOOLEAN:
	    return ((idx <= BOOL_IDX(xon_xoff)) ? TRUE : FALSE);
	case NUMBER:
	    return ((idx <= NUM_IDX(width_status_line)) ? TRUE : FALSE);
	case STRING:
	    return ((idx <= STR_IDX(prtr_non)) ? TRUE : FALSE);
	}
	break;

    case V_HPUX:		/* Hewlett-Packard */
	switch (type) {
	case BOOLEAN:
	    return ((idx <= BOOL_IDX(xon_xoff)) ? TRUE : FALSE);
	case NUMBER:
	    return ((idx <= NUM_IDX(label_width)) ? TRUE : FALSE);
	case STRING:
	    if (idx <= STR_IDX(prtr_non))
		return (TRUE);
	    else if (FNKEY(idx))	/* function keys */
		return (TRUE);
	    else if (idx == STR_IDX(plab_norm)
		     || idx == STR_IDX(label_on)
		     || idx == STR_IDX(label_off))
		return (TRUE);
	    else
		return (FALSE);
	}
	break;

    case V_AIX:		/* AIX */
	switch (type) {
	case BOOLEAN:
	    return ((idx <= BOOL_IDX(xon_xoff)) ? TRUE : FALSE);
	case NUMBER:
	    return ((idx <= NUM_IDX(width_status_line)) ? TRUE : FALSE);
	case STRING:
	    if (idx <= STR_IDX(prtr_non))
		return (TRUE);
	    else if (FNKEY(idx))	/* function keys */
		return (TRUE);
	    else
		return (FALSE);
	}
	break;

#define is_termcap(type) (OkIndex(idx, type##_from_termcap) && \
			  type##_from_termcap[idx])

    case V_BSD:		/* BSD */
	switch (type) {
	case BOOLEAN:
	    return is_termcap(bool);
	case NUMBER:
	    return is_termcap(num);
	case STRING:
	    return is_termcap(str);
	}
	break;
    }

    return (FALSE);		/* pacify the compiler */
}

static void
trim_trailing(void)
{
    while (outbuf.used > 0 && outbuf.text[outbuf.used - 1] == ' ')
	outbuf.text[--outbuf.used] = '\0';
}

static void
force_wrap(void)
{
    oldcol = column;
    trim_trailing();
    strcpy_DYN(&outbuf, trailer);
    column = indent;
}

static int
op_length(const char *src, int offset)
{
    int result = 0;
    int ch;
    if (offset > 0 && src[offset - 1] == '\\') {
	result = 0;
    } else {
	result++;		/* for '%' mark */
	ch = src[offset + result];
	if (TcOutput()) {
	    if (ch == '>') {
		result += 3;
	    } else if (ch == '+') {
		result += 2;
	    } else {
		result++;
	    }
	} else if (ch == '\'') {
	    result += 3;
	} else if (ch == L_CURL[0]) {
	    int n = result;
	    while ((ch = src[offset + n]) != '\0') {
		if (ch == R_CURL[0]) {
		    result = ++n;
		    break;
		}
		n++;
	    }
	} else if (strchr("pPg", ch) != 0) {
	    result += 2;
	} else {
	    result++;		/* ordinary operator */
	}
    }
    return result;
}

/*
 * When wrapping too-long strings, avoid splitting a backslash sequence, or
 * a terminfo '%' operator.  That will leave things a little ragged, but avoids
 * a stray backslash at the end of the line, as well as making the result a
 * little more readable.
 */
static int
find_split(const char *src, int step, int size)
{
    int result = size;
    int n;
    if (size > 0) {
	/* check if that would split a backslash-sequence */
	int mark = size;
	for (n = size - 1; n > 0; --n) {
	    int ch = UChar(src[step + n]);
	    if (ch == '\\') {
		if (n > 0 && src[step + n - 1] == ch)
		    --n;
		mark = n;
		break;
	    } else if (!isalnum(ch)) {
		break;
	    }
	}
	if (mark < size) {
	    result = mark;
	} else {
	    /* check if that would split a backslash-sequence */
	    for (n = size - 1; n > 0; --n) {
		int ch = UChar(src[step + n]);
		if (ch == '%') {
		    int need = op_length(src, step + n);
		    if ((n + need) > size) {
			mark = n;
		    }
		    break;
		}
	    }
	    if (mark < size) {
		result = mark;
	    }
	}
    }
    return result;
}

/*
 * If we are going to wrap lines, we cannot leave literal spaces because that
 * would be ambiguous if we split on that space.
 */
static char *
fill_spaces(const char *src)
{
    const char *fill = "\\s";
    size_t need = strlen(src);
    size_t size = strlen(fill);
    char *result = 0;
    int pass;
    int s, d;
    for (pass = 0; pass < 2; ++pass) {
	for (s = d = 0; src[s] != '\0'; ++s) {
	    if (src[s] == ' ') {
		if (pass) {
		    strcpy(&result[d], fill);
		    d += (int) size;
		} else {
		    need += size;
		}
	    } else {
		if (pass) {
		    result[d++] = src[s];
		} else {
		    ++d;
		}
	    }
	}
	if (pass) {
	    result[d] = '\0';
	} else {
	    result = malloc(need + 1);
	    if (result == 0)
		failed("fill_spaces");
	}
    }
    return result;
}

typedef enum {
    wOFF = 0
    ,w1ST = 1
    ,w2ND = 2
    ,wEND = 4
    ,wERR = 8
} WRAPMODE;

#define wrap_1ST(mode) ((mode)&w1ST)
#define wrap_END(mode) ((mode)&wEND)
#define wrap_ERR(mode) ((mode)&wERR)

static void
wrap_concat(const char *src, int need, unsigned mode)
{
    int gaps = (int) strlen(separator);
    int want = gaps + need;

    did_wrap = (width <= 0);
    if (wrap_1ST(mode)
	&& column > indent
	&& column + want > width) {
	force_wrap();
    }
    if ((wrap_END(mode) && !wrap_ERR(mode)) &&
	wrapped &&
	(width >= 0) &&
	(column + want) > width) {
	int step = 0;
	int used = width > WRAPPED ? width : WRAPPED;
	int size;
	int base = 0;
	char *p, align[9];
	const char *my_t = trailer;
	char *fill = fill_spaces(src);
	int last = (int) strlen(fill);

	need = last;

	if (TcOutput())
	    trailer = "\\\n\t ";

	if (!TcOutput() && (p = strchr(fill, '=')) != 0) {
	    base = (int) (p + 1 - fill);
	    if (base > 8)
		base = 8;
	    _nc_SPRINTF(align, _nc_SLIMIT(align) "%*s", base, " ");
	} else if (column > 8) {
	    base = column - 8;
	    if (base > 8)
		base = 8;
	    _nc_SPRINTF(align, _nc_SLIMIT(align) "%*s", base, " ");
	} else {
	    align[base] = '\0';
	}
	/* "pretty" overrides wrapping if it already split the line */
	if (!pretty || strchr(fill, '\n') == 0) {
	    int tag = 0;

	    if (TcOutput() && outbuf.used && !wrap_1ST(mode)) {
		tag = 3;
	    }

	    while ((column + (need + gaps)) > used) {
		size = used - tag;
		if (step) {
		    strcpy_DYN(&outbuf, align);
		    size -= base;
		}
		if (size > (last - step)) {
		    size = (last - step);
		}
		size = find_split(fill, step, size);
		strncpy_DYN(&outbuf, fill + step, (size_t) size);
		step += size;
		need -= size;
		if (need > 0) {
		    force_wrap();
		    did_wrap = TRUE;
		    tag = 0;
		}
	    }
	}
	if (need > 0) {
	    if (step)
		strcpy_DYN(&outbuf, align);
	    strcpy_DYN(&outbuf, fill + step);
	}
	if (wrap_END(mode))
	    strcpy_DYN(&outbuf, separator);
	trailer = my_t;
	force_wrap();

	free(fill);
    } else {
	strcpy_DYN(&outbuf, src);
	if (wrap_END(mode))
	    strcpy_DYN(&outbuf, separator);
	column += (int) strlen(src);
    }
}

static void
wrap_concat1(const char *src)
{
    int need = (int) strlen(src);
    wrap_concat(src, need, w1ST | wEND);
}

static void
wrap_concat3(const char *name, const char *eqls, const char *value)
{
    int nlen = (int) strlen(name);
    int elen = (int) strlen(eqls);
    int vlen = (int) strlen(value);

    wrap_concat(name, nlen + elen + vlen, w1ST);
    wrap_concat(eqls, elen + vlen, w2ND);
    wrap_concat(value, vlen, wEND);
}

#define IGNORE_SEP_TRAIL(first,last,sep_trail) \
	if ((size_t)(last - first) > sizeof(sep_trail)-1 \
	 && !strncmp(first, sep_trail, sizeof(sep_trail)-1)) \
		first += sizeof(sep_trail)-2

/* Returns the nominal length of the buffer assuming it is termcap format,
 * i.e., the continuation sequence is treated as a single character ":".
 *
 * There are several implementations of termcap which read the text into a
 * fixed-size buffer.  Generally they strip the newlines from the text, but may
 * not do it until after the buffer is read.  Also, "tc=" resolution may be
 * expanded in the same buffer.  This function is useful for measuring the size
 * of the best fixed-buffer implementation; the worst case may be much worse.
 */
#ifdef TEST_TERMCAP_LENGTH
static int
termcap_length(const char *src)
{
    static const char pattern[] = ":\\\n\t:";

    int len = 0;
    const char *const t = src + strlen(src);

    while (*src != '\0') {
	IGNORE_SEP_TRAIL(src, t, pattern);
	src++;
	len++;
    }
    return len;
}
#else
#define termcap_length(src) strlen(src)
#endif

static void
indent_DYN(DYNBUF * buffer, int level)
{
    int n;

    for (n = 0; n < level; n++)
	strncpy_DYN(buffer, "\t", (size_t) 1);
}

bool
has_params(const char *src)
{
    bool result = FALSE;
    int len = (int) strlen(src);
    int n;
    bool ifthen = FALSE;
    bool params = FALSE;

    for (n = 0; n < len - 1; ++n) {
	if (!strncmp(src + n, "%p", (size_t) 2)) {
	    params = TRUE;
	} else if (!strncmp(src + n, "%;", (size_t) 2)) {
	    ifthen = TRUE;
	    result = params;
	    break;
	}
    }
    if (!ifthen) {
	result = ((len > 50) && params);
    }
    return result;
}

static char *
fmt_complex(TERMTYPE2 *tterm, const char *capability, char *src, int level)
{
    bool percent = FALSE;
    bool params = has_params(src);

    while (*src != '\0') {
	switch (*src) {
	case '^':
	    percent = FALSE;
	    strncpy_DYN(&tmpbuf, src++, (size_t) 1);
	    break;
	case '\\':
	    percent = FALSE;
	    strncpy_DYN(&tmpbuf, src++, (size_t) 1);
	    break;
	case '%':
	    percent = TRUE;
	    break;
	case '?':		/* "if" */
	case 't':		/* "then" */
	case 'e':		/* "else" */
	    if (percent) {
		percent = FALSE;
		tmpbuf.text[tmpbuf.used - 1] = '\n';
		/* treat a "%e" as else-if, on the same level */
		if (*src == 'e') {
		    indent_DYN(&tmpbuf, level);
		    strncpy_DYN(&tmpbuf, "%", (size_t) 1);
		    strncpy_DYN(&tmpbuf, src, (size_t) 1);
		    src++;
		    params = has_params(src);
		    if (!params && *src != '\0' && *src != '%') {
			strncpy_DYN(&tmpbuf, "\n", (size_t) 1);
			indent_DYN(&tmpbuf, level + 1);
		    }
		} else {
		    indent_DYN(&tmpbuf, level + 1);
		    strncpy_DYN(&tmpbuf, "%", (size_t) 1);
		    strncpy_DYN(&tmpbuf, src, (size_t) 1);
		    if (*src++ == '?') {
			src = fmt_complex(tterm, capability, src, level + 1);
			if (*src != '\0' && *src != '%') {
			    strncpy_DYN(&tmpbuf, "\n", (size_t) 1);
			    indent_DYN(&tmpbuf, level + 1);
			}
		    } else if (level == 1) {
			if (checking)
			    _nc_warning("%s: %%%c without %%? in %s",
					_nc_first_name(tterm->term_names),
					*src, capability);
		    }
		}
		continue;
	    }
	    break;
	case ';':		/* "endif" */
	    if (percent) {
		percent = FALSE;
		if (level > 1) {
		    tmpbuf.text[tmpbuf.used - 1] = '\n';
		    indent_DYN(&tmpbuf, level);
		    strncpy_DYN(&tmpbuf, "%", (size_t) 1);
		    strncpy_DYN(&tmpbuf, src++, (size_t) 1);
		    if (src[0] == '%'
			&& src[1] != '\0'
			&& (strchr("?e;", src[1])) == 0) {
			tmpbuf.text[tmpbuf.used++] = '\n';
			indent_DYN(&tmpbuf, level);
		    }
		    return src;
		}
		if (checking)
		    _nc_warning("%s: %%; without %%? in %s",
				_nc_first_name(tterm->term_names),
				capability);
	    }
	    break;
	case 'p':
	    if (percent && params) {
		tmpbuf.text[tmpbuf.used - 1] = '\n';
		indent_DYN(&tmpbuf, level + 1);
		strncpy_DYN(&tmpbuf, "%", (size_t) 1);
	    }
	    params = FALSE;
	    percent = FALSE;
	    break;
	case ' ':
	    strncpy_DYN(&tmpbuf, "\\s", (size_t) 2);
	    ++src;
	    continue;
	default:
	    percent = FALSE;
	    break;
	}
	strncpy_DYN(&tmpbuf, src++, (size_t) 1);
    }
    return src;
}

/*
 * Make "large" numbers a little easier to read by showing them in hexadecimal
 * if they are "close" to a power of two.
 */
static const char *
number_format(int value)
{
    const char *result = "%d";
    if ((outform != F_TERMCAP) && (value > 255)) {
	unsigned long lv = (unsigned long) value;
	unsigned long mm;
	int bits = sizeof(unsigned long) * 8;
	int nn;
	for (nn = 8; nn < bits; ++nn) {
	    mm = 1UL << nn;
	    if ((mm - 16) <= lv && (mm + 16) > lv) {
		result = "%#x";
		break;
	    }
	}
    }
    return result;
}

#define SAME_CAP(n,cap) (&tterm->Strings[n] == &cap)
#define EXTRA_CAP 20

int
fmt_entry(TERMTYPE2 *tterm,
	  PredFunc pred,
	  int content_only,
	  int suppress_untranslatable,
	  int infodump,
	  int numbers)
{
    PredIdx i, j;
    char buffer[MAX_TERMINFO_LENGTH + EXTRA_CAP];
    char *capability;
    NCURSES_CONST char *name;
    int predval, len;
    PredIdx num_bools = 0;
    PredIdx num_values = 0;
    PredIdx num_strings = 0;
    bool outcount = 0;

#define WRAP_CONCAT1(s)		wrap_concat1(s); outcount = TRUE
#define WRAP_CONCAT		WRAP_CONCAT1(buffer)

    len = 12;			/* terminfo file-header */

    if (pred == 0) {
	cur_type = tterm;
	pred = dump_predicate;
    }

    strcpy_DYN(&outbuf, 0);
    if (content_only) {
	column = indent;	/* FIXME: workaround to prevent empty lines */
    } else {
	strcpy_DYN(&outbuf, tterm->term_names);

	/*
	 * Colon is legal in terminfo descriptions, but not in termcap.
	 */
	if (!infodump) {
	    char *p = outbuf.text;
	    while (*p) {
		if (*p == ':') {
		    *p = '=';
		}
		++p;
	    }
	}
	strcpy_DYN(&outbuf, separator);
	column = (int) outbuf.used;
	if (height > 1)
	    force_wrap();
    }

    for_each_boolean(j, tterm) {
	i = BoolIndirect(j);
	name = ExtBoolname(tterm, (int) i, bool_names);
	assert(strlen(name) < sizeof(buffer) - EXTRA_CAP);

	if (!version_filter(BOOLEAN, i))
	    continue;
	else if (isObsolete(outform, name))
	    continue;

	predval = pred(BOOLEAN, i);
	if (predval != FAIL) {
	    _nc_STRCPY(buffer, name, sizeof(buffer));
	    if (predval <= 0)
		_nc_STRCAT(buffer, "@", sizeof(buffer));
	    else if (i + 1 > num_bools)
		num_bools = i + 1;
	    WRAP_CONCAT;
	}
    }

    if (column != indent && height > 1)
	force_wrap();

    for_each_number(j, tterm) {
	i = NumIndirect(j);
	name = ExtNumname(tterm, (int) i, num_names);
	assert(strlen(name) < sizeof(buffer) - EXTRA_CAP);

	if (!version_filter(NUMBER, i))
	    continue;
	else if (isObsolete(outform, name))
	    continue;

	predval = pred(NUMBER, i);
	if (predval != FAIL) {
	    if (tterm->Numbers[i] < 0) {
		_nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
			    "%s@", name);
	    } else {
		size_t nn;
		_nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
			    "%s#", name);
		nn = strlen(buffer);
		_nc_SPRINTF(buffer + nn, _nc_SLIMIT(sizeof(buffer) - nn)
			    number_format(tterm->Numbers[i]),
			    tterm->Numbers[i]);
		if (i + 1 > num_values)
		    num_values = i + 1;
	    }
	    WRAP_CONCAT;
	}
    }

    if (column != indent && height > 1)
	force_wrap();

    len += (int) (num_bools
		  + num_values * 2
		  + strlen(tterm->term_names) + 1);
    if (len & 1)
	len++;

#undef CUR
#define CUR tterm->
    if (outform == F_TERMCAP) {
	if (VALID_STRING(termcap_reset)) {
	    if (VALID_STRING(init_3string)
		&& !strcmp(init_3string, termcap_reset))
		DISCARD(init_3string);

	    if (VALID_STRING(reset_2string)
		&& !strcmp(reset_2string, termcap_reset))
		DISCARD(reset_2string);
	}
    }

    for_each_string(j, tterm) {
	i = StrIndirect(j);
	name = ExtStrname(tterm, (int) i, str_names);
	assert(strlen(name) < sizeof(buffer) - EXTRA_CAP);

	capability = tterm->Strings[i];

	if (!version_filter(STRING, i))
	    continue;
	else if (isObsolete(outform, name))
	    continue;

#if NCURSES_XNAMES
	/*
	 * Extended names can be longer than 2 characters, but termcap programs
	 * cannot read those (filter them out).
	 */
	if (outform == F_TERMCAP && (strlen(name) > 2))
	    continue;
#endif

	if (outform == F_TERMCAP) {
	    /*
	     * Some older versions of vi want rmir/smir to be defined
	     * for ich/ich1 to work.  If they're not defined, force
	     * them to be output as defined and empty.
	     */
	    if (PRESENT(insert_character) || PRESENT(parm_ich)) {
		if (SAME_CAP(i, enter_insert_mode)
		    && enter_insert_mode == ABSENT_STRING) {
		    _nc_STRCPY(buffer, "im=", sizeof(buffer));
		    WRAP_CONCAT;
		    continue;
		}

		if (SAME_CAP(i, exit_insert_mode)
		    && exit_insert_mode == ABSENT_STRING) {
		    _nc_STRCPY(buffer, "ei=", sizeof(buffer));
		    WRAP_CONCAT;
		    continue;
		}
	    }
	    /*
	     * termcap applications such as screen will be confused if sgr0
	     * is translated to a string containing rmacs.  Filter that out.
	     */
	    if (PRESENT(exit_attribute_mode)) {
		if (SAME_CAP(i, exit_attribute_mode)) {
		    char *trimmed_sgr0;
		    char *my_sgr = set_attributes;

		    set_attributes = save_sgr;

		    trimmed_sgr0 = _nc_trim_sgr0(tterm);
		    if (strcmp(capability, trimmed_sgr0)) {
			capability = trimmed_sgr0;
		    } else {
			if (trimmed_sgr0 != exit_attribute_mode)
			    free(trimmed_sgr0);
		    }

		    set_attributes = my_sgr;
		}
	    }
	}

	predval = pred(STRING, i);
	buffer[0] = '\0';

	if (predval != FAIL) {
	    if (VALID_STRING(capability)
		&& i + 1 > num_strings)
		num_strings = i + 1;

	    if (!VALID_STRING(capability)) {
		_nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
			    "%s@", name);
		WRAP_CONCAT;
	    } else if (TcOutput()) {
		char *srccap = _nc_tic_expand(capability, TRUE, numbers);
		int params = (((i < (int) SIZEOF(parametrized)) &&
			       (i < STRCOUNT))
			      ? parametrized[i]
			      : ((*srccap == 'k')
				 ? 0
				 : has_params(srccap)));
		char *cv = _nc_infotocap(name, srccap, params);

		if (cv == 0) {
		    if (outform == F_TCONVERR) {
			_nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
				    "%s=!!! %s WILL NOT CONVERT !!!",
				    name, srccap);
			WRAP_CONCAT;
		    } else if (suppress_untranslatable) {
			continue;
		    } else {
			char *s = srccap, *d = buffer;
			int need = 3 + (int) strlen(name);
			while ((*d = *s++) != 0) {
			    if ((d - buffer + 1) >= (int) sizeof(buffer)) {
				fprintf(stderr,
					"%s: value for %s is too long\n",
					_nc_progname,
					name);
				*d = '\0';
				break;
			    }
			    if (*d == ':') {
				*d++ = '\\';
				*d = ':';
			    } else if (*d == '\\') {
				if ((*++d = *s++) == '\0')
				    break;
			    }
			    d++;
			    *d = '\0';
			}
			need += (int) (d - buffer);
			wrap_concat("..", need, w1ST | wERR);
			need -= 2;
			wrap_concat(name, need, wOFF | wERR);
			need -= (int) strlen(name);
			wrap_concat("=", need, w2ND | wERR);
			need -= 1;
			wrap_concat(buffer, need, wEND | wERR);
			outcount = TRUE;
		    }
		} else {
		    wrap_concat3(name, "=", cv);
		}
		len += (int) strlen(capability) + 1;
	    } else {
		char *src = _nc_tic_expand(capability,
					   outform == F_TERMINFO, numbers);

		strcpy_DYN(&tmpbuf, 0);
		strcpy_DYN(&tmpbuf, name);
		strcpy_DYN(&tmpbuf, "=");
		if (pretty
		    && (outform == F_TERMINFO
			|| outform == F_VARIABLE)) {
		    fmt_complex(tterm, name, src, 1);
		} else {
		    strcpy_DYN(&tmpbuf, src);
		}
		len += (int) strlen(capability) + 1;
		WRAP_CONCAT1(tmpbuf.text);
	    }
	}
	/* e.g., trimmed_sgr0 */
	if (VALID_STRING(capability) &&
	    capability != tterm->Strings[i])
	    free(capability);
    }
    len += (int) (num_strings * 2);

    /*
     * This piece of code should be an effective inverse of the functions
     * postprocess_terminfo() and postprocess_terminfo() in parse_entry.c.
     * Much more work should be done on this to support dumping termcaps.
     */
    if (tversion == V_HPUX) {
	if (VALID_STRING(memory_lock)) {
	    _nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
			"meml=%s", memory_lock);
	    WRAP_CONCAT;
	}
	if (VALID_STRING(memory_unlock)) {
	    _nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
			"memu=%s", memory_unlock);
	    WRAP_CONCAT;
	}
    } else if (tversion == V_AIX) {
	if (VALID_STRING(acs_chars)) {
	    bool box_ok = TRUE;
	    const char *acstrans = "lqkxjmwuvtn";
	    const char *cp;
	    char *tp, *sp, boxchars[11];

	    tp = boxchars;
	    for (cp = acstrans; *cp; cp++) {
		sp = (strchr) (acs_chars, *cp);
		if (sp)
		    *tp++ = sp[1];
		else {
		    box_ok = FALSE;
		    break;
		}
	    }
	    tp[0] = '\0';

	    if (box_ok) {
		char *tmp = _nc_tic_expand(boxchars,
					   (outform == F_TERMINFO),
					   numbers);
		_nc_STRCPY(buffer, "box1=", sizeof(buffer));
		while (*tmp != '\0') {
		    size_t have = strlen(buffer);
		    size_t next = strlen(tmp);
		    size_t want = have + next + 1;
		    size_t last = next;
		    char save = '\0';

		    /*
		     * If the expanded string is too long for the buffer,
		     * chop it off and save the location where we chopped it.
		     */
		    if (want >= sizeof(buffer)) {
			save = tmp[last];
			tmp[last] = '\0';
		    }
		    _nc_STRCAT(buffer, tmp, sizeof(buffer));

		    /*
		     * If we chopped the buffer, replace the missing piece and
		     * shift everything to append the remainder.
		     */
		    if (save != '\0') {
			next = 0;
			tmp[last] = save;
			while ((tmp[next] = tmp[last + next]) != '\0') {
			    ++next;
			}
		    } else {
			break;
		    }
		}
		WRAP_CONCAT;
	    }
	}
    }

    /*
     * kludge: trim off trailer to avoid an extra blank line
     * in infocmp -u output when there are no string differences
     */
    if (outcount) {
	bool trimmed = FALSE;
	j = (PredIdx) outbuf.used;
	if (wrapped && did_wrap) {
	    /* EMPTY */ ;
	} else if (j >= 2
		   && outbuf.text[j - 1] == '\t'
		   && outbuf.text[j - 2] == '\n') {
	    outbuf.used -= 2;
	    trimmed = TRUE;
	} else if (j >= 4
		   && outbuf.text[j - 1] == ':'
		   && outbuf.text[j - 2] == '\t'
		   && outbuf.text[j - 3] == '\n'
		   && outbuf.text[j - 4] == '\\') {
	    outbuf.used -= 4;
	    trimmed = TRUE;
	}
	if (trimmed) {
	    outbuf.text[outbuf.used] = '\0';
	    column = oldcol;
	    strcpy_DYN(&outbuf, " ");
	}
    }
#if 0
    fprintf(stderr, "num_bools = %d\n", num_bools);
    fprintf(stderr, "num_values = %d\n", num_values);
    fprintf(stderr, "num_strings = %d\n", num_strings);
    fprintf(stderr, "term_names=%s, len=%d, strlen(outbuf)=%d, outbuf=%s\n",
	    tterm->term_names, len, outbuf.used, outbuf.text);
#endif
    /*
     * Here's where we use infodump to trigger a more stringent length check
     * for termcap-translation purposes.
     * Return the length of the raw entry, without tc= expansions,
     * It gives an idea of which entries are deadly to even *scan past*,
     * as opposed to *use*.
     */
    return (infodump ? len : (int) termcap_length(outbuf.text));
}

static bool
kill_string(TERMTYPE2 *tterm, char *cap)
{
    unsigned n;
    for (n = 0; n < NUM_STRINGS(tterm); ++n) {
	if (cap == tterm->Strings[n]) {
	    tterm->Strings[n] = ABSENT_STRING;
	    return TRUE;
	}
    }
    return FALSE;
}

static char *
find_string(TERMTYPE2 *tterm, char *name)
{
    PredIdx n;
    for (n = 0; n < NUM_STRINGS(tterm); ++n) {
	if (version_filter(STRING, n)
	    && !strcmp(name, strnames[n])) {
	    char *cap = tterm->Strings[n];
	    if (VALID_STRING(cap)) {
		return cap;
	    }
	    break;
	}
    }
    return ABSENT_STRING;
}

/*
 * This is used to remove function-key labels from a termcap entry to
 * make it smaller.
 */
static int
kill_labels(TERMTYPE2 *tterm, int target)
{
    int n;
    int result = 0;
    char *cap;
    char name[10];

    for (n = 0; n <= 10; ++n) {
	_nc_SPRINTF(name, _nc_SLIMIT(sizeof(name)) "lf%d", n);
	cap = find_string(tterm, name);
	if (VALID_STRING(cap)
	    && kill_string(tterm, cap)) {
	    target -= (int) (strlen(cap) + 5);
	    ++result;
	    if (target < 0)
		break;
	}
    }
    return result;
}

/*
 * This is used to remove function-key definitions from a termcap entry to
 * make it smaller.
 */
static int
kill_fkeys(TERMTYPE2 *tterm, int target)
{
    int n;
    int result = 0;
    char *cap;
    char name[10];

    for (n = 60; n >= 0; --n) {
	_nc_SPRINTF(name, _nc_SLIMIT(sizeof(name)) "kf%d", n);
	cap = find_string(tterm, name);
	if (VALID_STRING(cap)
	    && kill_string(tterm, cap)) {
	    target -= (int) (strlen(cap) + 5);
	    ++result;
	    if (target < 0)
		break;
	}
    }
    return result;
}

/*
 * Check if the given acsc string is a 1-1 mapping, i.e., just-like-vt100.
 * Also, since this is for termcap, we only care about the line-drawing map.
 */
#define isLine(c) (strchr("lmkjtuvwqxn", c) != 0)

static bool
one_one_mapping(const char *mapping)
{
    bool result = TRUE;

    if (VALID_STRING(mapping)) {
	int n = 0;
	while (mapping[n] != '\0' && mapping[n + 1] != '\0') {
	    if (isLine(mapping[n]) &&
		mapping[n] != mapping[n + 1]) {
		result = FALSE;
		break;
	    }
	    n += 2;
	}
    }
    return result;
}

#define FMT_ENTRY() \
		fmt_entry(tterm, pred, \
			0, \
			suppress_untranslatable, \
			infodump, numbers)

#define SHOW_WHY PRINTF

static bool
purged_acs(TERMTYPE2 *tterm)
{
    bool result = FALSE;

    if (VALID_STRING(acs_chars)) {
	if (!one_one_mapping(acs_chars)) {
	    enter_alt_charset_mode = ABSENT_STRING;
	    exit_alt_charset_mode = ABSENT_STRING;
	    SHOW_WHY("# (rmacs/smacs removed for consistency)\n");
	}
	result = TRUE;
    }
    return result;
}

static void
encode_b64(char *target, char *source, unsigned state, int *saved)
{
    /* RFC-4648 */
    static const char data[] =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "abcdefghijklmnopqrstuvwxyz"
    "0123456789" "-_";
    int ch = UChar(source[state]);

    switch (state % 3) {
    case 0:
	*target++ = data[(ch >> 2) & 077];
	*saved = (ch << 4);
	break;
    case 1:
	*target++ = data[((ch >> 4) | *saved) & 077];
	*saved = (ch << 2);
	break;
    case 2:
	*target++ = data[((ch >> 6) | *saved) & 077];
	*target++ = data[ch & 077];
	*saved = 0;
	break;
    }
    *target = '\0';
}

/*
 * Dump a single entry.
 */
void
dump_entry(TERMTYPE2 *tterm,
	   int suppress_untranslatable,
	   int limited,
	   int numbers,
	   PredFunc pred)
{
    TERMTYPE2 save_tterm;
    int len, critlen;
    const char *legend;
    bool infodump;

    if (quickdump) {
	char bigbuf[65536];
	unsigned n;
	unsigned offset = 0;
	separator = "";
	trailer = "\n";
	indent = 0;
	if (_nc_write_object(tterm, bigbuf, &offset, sizeof(bigbuf)) == OK) {
	    char numbuf[80];
	    if (quickdump & 1) {
		if (outbuf.used)
		    wrap_concat1("\n");
		wrap_concat1("hex:");
		for (n = 0; n < offset; ++n) {
		    _nc_SPRINTF(numbuf, _nc_SLIMIT(sizeof(numbuf))
				"%02X", UChar(bigbuf[n]));
		    wrap_concat1(numbuf);
		}
	    }
	    if (quickdump & 2) {
		static char padding[] =
		{0, 0};
		int value = 0;
		if (outbuf.used)
		    wrap_concat1("\n");
		wrap_concat1("b64:");
		for (n = 0; n < offset; ++n) {
		    encode_b64(numbuf, bigbuf, n, &value);
		    wrap_concat1(numbuf);
		}
		switch (n % 3) {
		case 0:
		    break;
		case 1:
		    encode_b64(numbuf, padding, 1, &value);
		    wrap_concat1(numbuf);
		    wrap_concat1("==");
		    break;
		case 2:
		    encode_b64(numbuf, padding, 1, &value);
		    wrap_concat1(numbuf);
		    wrap_concat1("=");
		    break;
		}
	    }
	}
	return;
    }

    if (TcOutput()) {
	critlen = MAX_TERMCAP_LENGTH;
	legend = "older termcap";
	infodump = FALSE;
	set_obsolete_termcaps(tterm);
    } else {
	critlen = MAX_TERMINFO_LENGTH;
	legend = "terminfo";
	infodump = TRUE;
    }

    save_sgr = set_attributes;

    if ((FMT_ENTRY() > critlen)
	&& limited) {

	save_tterm = *tterm;
	if (!suppress_untranslatable) {
	    SHOW_WHY("# (untranslatable capabilities removed to fit entry within %d bytes)\n",
		     critlen);
	    suppress_untranslatable = TRUE;
	}
	if (FMT_ENTRY() > critlen) {
	    /*
	     * We pick on sgr because it's a nice long string capability that
	     * is really just an optimization hack.  Another good candidate is
	     * acsc since it is both long and unused by BSD termcap.
	     */
	    bool changed = FALSE;

#if NCURSES_XNAMES
	    /*
	     * Extended names are most likely function-key definitions.  Drop
	     * those first.
	     */
	    unsigned n;
	    for (n = STRCOUNT; n < NUM_STRINGS(tterm); n++) {
		const char *name = ExtStrname(tterm, (int) n, strnames);

		if (VALID_STRING(tterm->Strings[n])) {
		    set_attributes = ABSENT_STRING;
		    /* we remove long names anyway - only report the short */
		    if (strlen(name) <= 2) {
			SHOW_WHY("# (%s removed to fit entry within %d bytes)\n",
				 name,
				 critlen);
		    }
		    changed = TRUE;
		    if (FMT_ENTRY() <= critlen)
			break;
		}
	    }
#endif
	    if (VALID_STRING(set_attributes)) {
		set_attributes = ABSENT_STRING;
		SHOW_WHY("# (sgr removed to fit entry within %d bytes)\n",
			 critlen);
		changed = TRUE;
	    }
	    if (!changed || (FMT_ENTRY() > critlen)) {
		if (purged_acs(tterm)) {
		    acs_chars = ABSENT_STRING;
		    SHOW_WHY("# (acsc removed to fit entry within %d bytes)\n",
			     critlen);
		    changed = TRUE;
		}
	    }
	    if (!changed || (FMT_ENTRY() > critlen)) {
		int oldversion = tversion;

		tversion = V_BSD;
		SHOW_WHY("# (terminfo-only capabilities suppressed to fit entry within %d bytes)\n",
			 critlen);

		len = FMT_ENTRY();
		if (len > critlen
		    && kill_labels(tterm, len - critlen)) {
		    SHOW_WHY("# (some labels capabilities suppressed to fit entry within %d bytes)\n",
			     critlen);
		    len = FMT_ENTRY();
		}
		if (len > critlen
		    && kill_fkeys(tterm, len - critlen)) {
		    SHOW_WHY("# (some function-key capabilities suppressed to fit entry within %d bytes)\n",
			     critlen);
		    len = FMT_ENTRY();
		}
		if (len > critlen) {
		    (void) fprintf(stderr,
				   "%s: %s entry is %d bytes long\n",
				   _nc_progname,
				   _nc_first_name(tterm->term_names),
				   len);
		    SHOW_WHY("# WARNING: this entry, %d bytes long, may core-dump %s libraries!\n",
			     len, legend);
		}
		tversion = oldversion;
	    }
	    set_attributes = save_sgr;
	    *tterm = save_tterm;
	}
    } else if (!version_filter(STRING, STR_IDX(acs_chars))) {
	save_tterm = *tterm;
	if (purged_acs(tterm)) {
	    (void) FMT_ENTRY();
	}
	*tterm = save_tterm;
    }
}

void
dump_uses(const char *name, bool infodump)
/* dump "use=" clauses in the appropriate format */
{
    char buffer[MAX_TERMINFO_LENGTH];

    if (TcOutput())
	trim_trailing();
    _nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer))
		"%s%s", infodump ? "use=" : "tc=", name);
    wrap_concat1(buffer);
}

int
show_entry(void)
{
    /*
     * Trim any remaining whitespace.
     */
    if (outbuf.used != 0) {
	bool infodump = !TcOutput();
	char delim = (char) (infodump ? ',' : ':');
	int j;

	for (j = (int) outbuf.used - 1; j > 0; --j) {
	    char ch = outbuf.text[j];
	    if (ch == '\n') {
		;
	    } else if (isspace(UChar(ch))) {
		outbuf.used = (size_t) j;
	    } else if (!infodump && ch == '\\') {
		outbuf.used = (size_t) j;
	    } else if (ch == delim && (j == 0 || outbuf.text[j - 1] != '\\')) {
		outbuf.used = (size_t) (j + 1);
	    } else {
		break;
	    }
	}
	outbuf.text[outbuf.used] = '\0';
    }
    if (outbuf.text != 0) {
	(void) fputs(outbuf.text, stdout);
	putchar('\n');
    }
    return (int) outbuf.used;
}

void
compare_entry(PredHook hook,
	      TERMTYPE2 *tp GCC_UNUSED,
	      bool quiet)
/* compare two entries */
{
    PredIdx i, j;
    NCURSES_CONST char *name;

    if (!quiet)
	fputs("    comparing booleans.\n", stdout);
    for_each_boolean(j, tp) {
	i = BoolIndirect(j);
	name = ExtBoolname(tp, (int) i, bool_names);

	if (isObsolete(outform, name))
	    continue;

	(*hook) (CMP_BOOLEAN, i, name);
    }

    if (!quiet)
	fputs("    comparing numbers.\n", stdout);
    for_each_number(j, tp) {
	i = NumIndirect(j);
	name = ExtNumname(tp, (int) i, num_names);

	if (isObsolete(outform, name))
	    continue;

	(*hook) (CMP_NUMBER, i, name);
    }

    if (!quiet)
	fputs("    comparing strings.\n", stdout);
    for_each_string(j, tp) {
	i = StrIndirect(j);
	name = ExtStrname(tp, (int) i, str_names);

	if (isObsolete(outform, name))
	    continue;

	(*hook) (CMP_STRING, i, name);
    }

    /* (void) fputs("    comparing use entries.\n", stdout); */
    (*hook) (CMP_USE, 0, "use");

}

#define NOTSET(s)	((s) == 0)

/*
 * This bit of legerdemain turns all the terminfo variable names into
 * references to locations in the arrays Booleans, Numbers, and Strings ---
 * precisely what's needed.
 */
#undef CUR
#define CUR tp->

static void
set_obsolete_termcaps(TERMTYPE2 *tp)
{
#include "capdefaults.c"
}

/*
 * Convert an alternate-character-set string to canonical form: sorted and
 * unique.
 */
void
repair_acsc(TERMTYPE2 *tp)
{
    if (VALID_STRING(acs_chars)) {
	size_t n, m;
	char mapped[256];
	char extra = 0;
	unsigned source;
	unsigned target;
	bool fix_needed = FALSE;

	for (n = 0, source = 0; acs_chars[n] != 0; n++) {
	    target = UChar(acs_chars[n]);
	    if (source >= target) {
		fix_needed = TRUE;
		break;
	    }
	    source = target;
	    if (acs_chars[n + 1])
		n++;
	}
	if (fix_needed) {
	    memset(mapped, 0, sizeof(mapped));
	    for (n = 0; acs_chars[n] != 0; n++) {
		source = UChar(acs_chars[n]);
		if ((target = (unsigned char) acs_chars[n + 1]) != 0) {
		    mapped[source] = (char) target;
		    n++;
		} else {
		    extra = (char) source;
		}
	    }
	    for (n = m = 0; n < sizeof(mapped); n++) {
		if (mapped[n]) {
		    acs_chars[m++] = (char) n;
		    acs_chars[m++] = mapped[n];
		}
	    }
	    if (extra)
		acs_chars[m++] = extra;		/* garbage in, garbage out */
	    acs_chars[m] = 0;
	}
    }
}