Bug Summary

File:src/lib/libcurses/tinfo/parse_entry.c
Warning:line 777, column 8
Value stored to 'base' during its initialization is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name parse_entry.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/lib/libcurses/obj -resource-dir /usr/local/lib/clang/13.0.0 -I . -I /usr/src/lib/libcurses -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/lib/libcurses/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c /usr/src/lib/libcurses/tinfo/parse_entry.c
1/* $OpenBSD: parse_entry.c,v 1.13 2010/01/12 23:22:06 nicm Exp $ */
2
3/****************************************************************************
4 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. *
5 * *
6 * Permission is hereby granted, free of charge, to any person obtaining a *
7 * copy of this software and associated documentation files (the *
8 * "Software"), to deal in the Software without restriction, including *
9 * without limitation the rights to use, copy, modify, merge, publish, *
10 * distribute, distribute with modifications, sublicense, and/or sell *
11 * copies of the Software, and to permit persons to whom the Software is *
12 * furnished to do so, subject to the following conditions: *
13 * *
14 * The above copyright notice and this permission notice shall be included *
15 * in all copies or substantial portions of the Software. *
16 * *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24 * *
25 * Except as contained in this notice, the name(s) of the above copyright *
26 * holders shall not be used in advertising or otherwise to promote the *
27 * sale, use or other dealings in this Software without prior written *
28 * authorization. *
29 ****************************************************************************/
30
31/****************************************************************************
32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
33 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
34 * and: Thomas E. Dickey 1996-on *
35 ****************************************************************************/
36
37/*
38 * parse_entry.c -- compile one terminfo or termcap entry
39 *
40 * Get an exact in-core representation of an entry. Don't
41 * try to resolve use or tc capabilities, that is someone
42 * else's job. Depends on the lexical analyzer to get tokens
43 * from the input stream.
44 */
45
46#define __INTERNAL_CAPS_VISIBLE
47#include <curses.priv.h>
48
49#include <ctype.h>
50#include <tic.h>
51#include <term_entry.h>
52
53MODULE_ID("$Id: parse_entry.c,v 1.13 2010/01/12 23:22:06 nicm Exp $")
54
55#ifdef LINT
56static short const parametrized[] =
57{0};
58#else
59#include <parametrized.h>
60#endif
61
62static void postprocess_termcap(TERMTYPE *, bool_Bool);
63static void postprocess_terminfo(TERMTYPE *);
64static struct name_table_entry const *lookup_fullname(const char *name);
65
66#if NCURSES_XNAMES1
67
68static struct name_table_entry const *
69_nc_extend_names(ENTRY * entryp, char *name, int token_type)
70{
71 static struct name_table_entry temp;
72 TERMTYPE *tp = &(entryp->tterm);
73 unsigned offset = 0;
74 unsigned actual;
75 unsigned tindex;
76 unsigned first, last, n;
77 bool_Bool found;
78
79 switch (token_type) {
80 case BOOLEAN0:
81 first = 0;
82 last = tp->ext_Booleans;
83 offset = tp->ext_Booleans;
84 tindex = tp->num_Booleans;
85 break;
86 case NUMBER1:
87 first = tp->ext_Booleans;
88 last = tp->ext_Numbers + first;
89 offset = tp->ext_Booleans + tp->ext_Numbers;
90 tindex = tp->num_Numbers;
91 break;
92 case STRING2:
93 first = tp->ext_Booleans + tp->ext_Numbers;
94 last = tp->ext_Strings + first;
95 offset = tp->ext_Booleans + tp->ext_Numbers + tp->ext_Strings;
96 tindex = tp->num_Strings;
97 break;
98 case CANCEL3:
99 actual = NUM_EXT_NAMES(tp)((tp)->ext_Booleans + (tp)->ext_Numbers + (tp)->ext_Strings
)
;
100 for (n = 0; n < actual; n++) {
101 if (!strcmp(name, tp->ext_Names[n])) {
102 if (n > (unsigned) (tp->ext_Booleans + tp->ext_Numbers)) {
103 token_type = STRING2;
104 } else if (n > tp->ext_Booleans) {
105 token_type = NUMBER1;
106 } else {
107 token_type = BOOLEAN0;
108 }
109 return _nc_extend_names(entryp, name, token_type);
110 }
111 }
112 /* Well, we are given a cancel for a name that we don't recognize */
113 return _nc_extend_names(entryp, name, STRING2);
114 default:
115 return 0;
116 }
117
118 /* Adjust the 'offset' (insertion-point) to keep the lists of extended
119 * names sorted.
120 */
121 for (n = first, found = FALSE0; n < last; n++) {
122 int cmp = strcmp(tp->ext_Names[n], name);
123 if (cmp == 0)
124 found = TRUE1;
125 if (cmp >= 0) {
126 offset = n;
127 tindex = n - first;
128 switch (token_type) {
129 case BOOLEAN0:
130 tindex += BOOLCOUNT44;
131 break;
132 case NUMBER1:
133 tindex += NUMCOUNT39;
134 break;
135 case STRING2:
136 tindex += STRCOUNT414;
137 break;
138 }
139 break;
140 }
141 }
142 if (!found) {
143 switch (token_type) {
144 case BOOLEAN0:
145 tp->ext_Booleans += 1;
146 tp->num_Booleans += 1;
147 tp->Booleans = typeRealloc(NCURSES_SBOOL, tp->num_Booleans, tp->Booleans)(signed char *)_nc_doalloc(tp->Booleans, (tp->num_Booleans
)*sizeof(signed char))
;
148 for (last = tp->num_Booleans - 1; last > tindex; last--)
149 tp->Booleans[last] = tp->Booleans[last - 1];
150 break;
151 case NUMBER1:
152 tp->ext_Numbers += 1;
153 tp->num_Numbers += 1;
154 tp->Numbers = typeRealloc(short, tp->num_Numbers, tp->Numbers)(short *)_nc_doalloc(tp->Numbers, (tp->num_Numbers)*sizeof
(short))
;
155 for (last = tp->num_Numbers - 1; last > tindex; last--)
156 tp->Numbers[last] = tp->Numbers[last - 1];
157 break;
158 case STRING2:
159 tp->ext_Strings += 1;
160 tp->num_Strings += 1;
161 tp->Strings = typeRealloc(char *, tp->num_Strings, tp->Strings)(char * *)_nc_doalloc(tp->Strings, (tp->num_Strings)*sizeof
(char *))
;
162 for (last = tp->num_Strings - 1; last > tindex; last--)
163 tp->Strings[last] = tp->Strings[last - 1];
164 break;
165 }
166 actual = NUM_EXT_NAMES(tp)((tp)->ext_Booleans + (tp)->ext_Numbers + (tp)->ext_Strings
)
;
167 tp->ext_Names = typeRealloc(char *, actual, tp->ext_Names)(char * *)_nc_doalloc(tp->ext_Names, (actual)*sizeof(char *
))
;
168 while (--actual > offset)
169 tp->ext_Names[actual] = tp->ext_Names[actual - 1];
170 tp->ext_Names[offset] = _nc_save_str(name);
171 }
172
173 temp.nte_name = tp->ext_Names[offset];
174 temp.nte_type = token_type;
175 temp.nte_index = tindex;
176 temp.nte_link = -1;
177
178 return &temp;
179}
180#endif /* NCURSES_XNAMES */
181
182/*
183 * int
184 * _nc_parse_entry(entry, literal, silent)
185 *
186 * Compile one entry. Doesn't try to resolve use or tc capabilities.
187 *
188 * found-forward-use = FALSE
189 * re-initialise internal arrays
190 * get_token();
191 * if the token was not a name in column 1, complain and die
192 * save names in entry's string table
193 * while (get_token() is not EOF and not NAMES)
194 * check for existence and type-correctness
195 * enter cap into structure
196 * if STRING
197 * save string in entry's string table
198 * push back token
199 */
200
201#define BAD_TC_USAGEif (!bad_tc_usage) { bad_tc_usage = 1; _nc_warning("Legacy termcap allows only a trailing tc= clause"
); }
if (!bad_tc_usage) \
202 { bad_tc_usage = TRUE1; \
203 _nc_warning("Legacy termcap allows only a trailing tc= clause"); }
204
205NCURSES_EXPORT(int)int
206_nc_parse_entry(struct entry *entryp, int literal, bool_Bool silent)
207{
208 int token_type;
209 struct name_table_entry const *entry_ptr;
210 char *ptr, *base;
211 bool_Bool bad_tc_usage = FALSE0;
212
213 token_type = _nc_get_token(silent);
214
215 if (token_type == EOF(-1))
216 return (EOF(-1));
217 if (token_type != NAMES4)
218 _nc_err_abort("Entry does not start with terminal names in column one");
219
220 _nc_init_entry(&entryp->tterm);
221
222 entryp->cstart = _nc_comment_start;
223 entryp->cend = _nc_comment_end;
224 entryp->startline = _nc_start_line;
225 DEBUG(2, ("Comment range is %ld to %ld", entryp->cstart, entryp->cend));
226
227 /*
228 * Strip off the 2-character termcap name, if present. Originally termcap
229 * used that as an indexing aid. We can retain 2-character terminfo names,
230 * but note that they would be lost if we translate to/from termcap. This
231 * feature is supposedly obsolete since "newer" BSD implementations do not
232 * use it; however our reference for this feature is SunOS 4.x, which
233 * implemented it. Note that the resulting terminal type was never the
234 * 2-character name, but was instead the first alias after that.
235 */
236 ptr = _nc_curr_token.tk_name;
237 if (_nc_syntax == SYN_TERMCAP1
238#if NCURSES_XNAMES1
239 && !_nc_user_definable
240#endif
241 ) {
242 if (ptr[2] == '|') {
243 ptr += 3;
244 _nc_curr_token.tk_name[2] = '\0';
245 }
246 }
247
248 entryp->tterm.str_table = entryp->tterm.term_names = _nc_save_str(ptr);
249
250 if (entryp->tterm.str_table == 0)
251 return (ERR(-1));
252
253 DEBUG(1, ("Starting '%s'", ptr));
254
255 /*
256 * We do this because the one-token lookahead in the parse loop
257 * results in the terminal type getting prematurely set to correspond
258 * to that of the next entry.
259 */
260 _nc_set_type(_nc_first_name(entryp->tterm.term_names));
261
262 /* check for overly-long names and aliases */
263 for (base = entryp->tterm.term_names; (ptr = strchr(base, '|')) != 0;
264 base = ptr + 1) {
265 if (ptr - base > MAX_ALIAS32) {
266 _nc_warning("%s `%.*s' may be too long",
267 (base == entryp->tterm.term_names)
268 ? "primary name"
269 : "alias",
270 (int) (ptr - base), base);
271 }
272 }
273
274 entryp->nuses = 0;
275
276 for (token_type = _nc_get_token(silent);
277 token_type != EOF(-1) && token_type != NAMES4;
278 token_type = _nc_get_token(silent)) {
279 bool_Bool is_use = (strcmp(_nc_curr_token.tk_name, "use") == 0);
280 bool_Bool is_tc = !is_use && (strcmp(_nc_curr_token.tk_name, "tc") == 0);
281 if (is_use || is_tc) {
282 entryp->uses[entryp->nuses].name = _nc_save_str(_nc_curr_token.tk_valstring);
283 entryp->uses[entryp->nuses].line = _nc_curr_line;
284 entryp->nuses++;
285 if (entryp->nuses > 1 && is_tc) {
286 BAD_TC_USAGEif (!bad_tc_usage) { bad_tc_usage = 1; _nc_warning("Legacy termcap allows only a trailing tc= clause"
); }
287 }
288 } else {
289 /* normal token lookup */
290 entry_ptr = _nc_find_entry(_nc_curr_token.tk_name,
291 _nc_get_hash_table(_nc_syntax));
292
293 /*
294 * Our kluge to handle aliasing. The reason it's done
295 * this ugly way, with a linear search, is so the hashing
296 * machinery doesn't have to be made really complicated
297 * (also we get better warnings this way). No point in
298 * making this case fast, aliased caps aren't common now
299 * and will get rarer.
300 */
301 if (entry_ptr == NOTFOUND((struct name_table_entry *) 0)) {
302 const struct alias *ap;
303
304 if (_nc_syntax == SYN_TERMCAP1) {
305 if (entryp->nuses != 0) {
306 BAD_TC_USAGEif (!bad_tc_usage) { bad_tc_usage = 1; _nc_warning("Legacy termcap allows only a trailing tc= clause"
); }
307 }
308 for (ap = _nc_get_alias_table(TRUE1); ap->from; ap++)
309 if (strcmp(ap->from, _nc_curr_token.tk_name) == 0) {
310 if (ap->to == (char *) 0) {
311 _nc_warning("%s (%s termcap extension) ignored",
312 ap->from, ap->source);
313 goto nexttok;
314 }
315
316 entry_ptr = _nc_find_entry(ap->to,
317 _nc_get_hash_table(TRUE1));
318 if (entry_ptr && !silent)
319 _nc_warning("%s (%s termcap extension) aliased to %s",
320 ap->from, ap->source, ap->to);
321 break;
322 }
323 } else { /* if (_nc_syntax == SYN_TERMINFO) */
324 for (ap = _nc_get_alias_table(FALSE0); ap->from; ap++)
325 if (strcmp(ap->from, _nc_curr_token.tk_name) == 0) {
326 if (ap->to == (char *) 0) {
327 _nc_warning("%s (%s terminfo extension) ignored",
328 ap->from, ap->source);
329 goto nexttok;
330 }
331
332 entry_ptr = _nc_find_entry(ap->to,
333 _nc_get_hash_table(FALSE0));
334 if (entry_ptr && !silent)
335 _nc_warning("%s (%s terminfo extension) aliased to %s",
336 ap->from, ap->source, ap->to);
337 break;
338 }
339
340 if (entry_ptr == NOTFOUND((struct name_table_entry *) 0)) {
341 entry_ptr = lookup_fullname(_nc_curr_token.tk_name);
342 }
343 }
344 }
345#if NCURSES_XNAMES1
346 /*
347 * If we have extended-names active, we will automatically
348 * define a name based on its context.
349 */
350 if (entry_ptr == NOTFOUND((struct name_table_entry *) 0)
351 && _nc_user_definable
352 && (entry_ptr = _nc_extend_names(entryp,
353 _nc_curr_token.tk_name,
354 token_type)) != 0) {
355 if (_nc_tracing >= DEBUG_LEVEL(1)((1) << 13))
356 _nc_warning("extended capability '%s'", _nc_curr_token.tk_name);
357 }
358#endif /* NCURSES_XNAMES */
359
360 /* can't find this cap name, not even as an alias */
361 if (entry_ptr == NOTFOUND((struct name_table_entry *) 0)) {
362 if (!silent)
363 _nc_warning("unknown capability '%s'",
364 _nc_curr_token.tk_name);
365 continue;
366 }
367
368 /* deal with bad type/value combinations. */
369 if (token_type != CANCEL3 && entry_ptr->nte_type != token_type) {
370 /*
371 * Nasty special cases here handle situations in which type
372 * information can resolve name clashes. Normal lookup
373 * finds the last instance in the capability table of a
374 * given name, regardless of type. find_type_entry looks
375 * for a first matching instance with given type. So as
376 * long as all ambiguous names occur in pairs of distinct
377 * type, this will do the job.
378 */
379
380 if (token_type == NUMBER1
381 && !strcmp("ma", _nc_curr_token.tk_name)) {
382 /* tell max_attributes from arrow_key_map */
383 entry_ptr = _nc_find_type_entry("ma", NUMBER1,
384 _nc_get_table(_nc_syntax
385 != 0));
386 assert(entry_ptr != 0)((void)0);
387
388 } else if (token_type == STRING2
389 && !strcmp("MT", _nc_curr_token.tk_name)) {
390 /* map terminfo's string MT to MT */
391 entry_ptr = _nc_find_type_entry("MT", STRING2,
392 _nc_get_table(_nc_syntax
393 != 0));
394 assert(entry_ptr != 0)((void)0);
395
396 } else if (token_type == BOOLEAN0
397 && entry_ptr->nte_type == STRING2) {
398 /* treat strings without following "=" as empty strings */
399 token_type = STRING2;
400 } else {
401 /* we couldn't recover; skip this token */
402 if (!silent) {
403 const char *type_name;
404 switch (entry_ptr->nte_type) {
405 case BOOLEAN0:
406 type_name = "boolean";
407 break;
408 case STRING2:
409 type_name = "string";
410 break;
411 case NUMBER1:
412 type_name = "numeric";
413 break;
414 default:
415 type_name = "unknown";
416 break;
417 }
418 _nc_warning("wrong type used for %s capability '%s'",
419 type_name, _nc_curr_token.tk_name);
420 }
421 continue;
422 }
423 }
424
425 /* now we know that the type/value combination is OK */
426 switch (token_type) {
427 case CANCEL3:
428 switch (entry_ptr->nte_type) {
429 case BOOLEAN0:
430 entryp->tterm.Booleans[entry_ptr->nte_index] = CANCELLED_BOOLEAN((signed char)-2);
431 break;
432
433 case NUMBER1:
434 entryp->tterm.Numbers[entry_ptr->nte_index] = CANCELLED_NUMERIC(-2);
435 break;
436
437 case STRING2:
438 entryp->tterm.Strings[entry_ptr->nte_index] = CANCELLED_STRING(char *)(-1);
439 break;
440 }
441 break;
442
443 case BOOLEAN0:
444 entryp->tterm.Booleans[entry_ptr->nte_index] = TRUE1;
445 break;
446
447 case NUMBER1:
448 entryp->tterm.Numbers[entry_ptr->nte_index] =
449 _nc_curr_token.tk_valnumber;
450 break;
451
452 case STRING2:
453 ptr = _nc_curr_token.tk_valstring;
454 if (_nc_syntax == SYN_TERMCAP1)
455 ptr = _nc_captoinfo(_nc_curr_token.tk_name,
456 ptr,
457 parametrized[entry_ptr->nte_index]);
458 entryp->tterm.Strings[entry_ptr->nte_index] = _nc_save_str(ptr);
459 break;
460
461 default:
462 if (!silent)
463 _nc_warning("unknown token type");
464 _nc_panic_mode((char) ((_nc_syntax == SYN_TERMCAP1) ? ':' : ','));
465 continue;
466 }
467 } /* end else cur_token.name != "use" */
468 nexttok:
469 continue; /* cannot have a label w/o statement */
470 } /* endwhile (not EOF and not NAMES) */
471
472 _nc_push_token(token_type);
473 _nc_set_type(_nc_first_name(entryp->tterm.term_names));
474
475 /*
476 * Try to deduce as much as possible from extension capabilities
477 * (this includes obsolete BSD capabilities). Sigh...it would be more
478 * space-efficient to call this after use resolution, but it has
479 * to be done before entry allocation is wrapped up.
480 */
481 if (!literal) {
482 if (_nc_syntax == SYN_TERMCAP1) {
483 bool_Bool has_base_entry = FALSE0;
484 unsigned i;
485
486 /*
487 * Don't insert defaults if this is a `+' entry meant only
488 * for inclusion in other entries (not sure termcap ever
489 * had these, actually).
490 */
491 if (strchr(entryp->tterm.term_names, '+'))
492 has_base_entry = TRUE1;
493 else
494 /*
495 * Otherwise, look for a base entry that will already
496 * have picked up defaults via translation.
497 */
498 for (i = 0; i < entryp->nuses; i++)
499 if (!strchr((char *) entryp->uses[i].name, '+'))
500 has_base_entry = TRUE1;
501
502 postprocess_termcap(&entryp->tterm, has_base_entry);
503 } else
504 postprocess_terminfo(&entryp->tterm);
505 }
506 _nc_wrap_entry(entryp, FALSE0);
507
508 return (OK(0));
509}
510
511NCURSES_EXPORT(int)int
512_nc_capcmp(const char *s, const char *t)
513/* compare two string capabilities, stripping out padding */
514{
515 if (!s && !t)
516 return (0);
517 else if (!s || !t)
518 return (1);
519
520 for (;;) {
521 if (s[0] == '$' && s[1] == '<') {
522 for (s += 2;; s++)
523 if (!(isdigit(UChar(*s)((unsigned char)(*s)))
524 || *s == '.'
525 || *s == '*'
526 || *s == '/'
527 || *s == '>'))
528 break;
529 }
530
531 if (t[0] == '$' && t[1] == '<') {
532 for (t += 2;; t++)
533 if (!(isdigit(UChar(*t)((unsigned char)(*t)))
534 || *t == '.'
535 || *t == '*'
536 || *t == '/'
537 || *t == '>'))
538 break;
539 }
540
541 /* we've now pushed s and t past any padding they were pointing at */
542
543 if (*s == '\0' && *t == '\0')
544 return (0);
545
546 if (*s != *t)
547 return (*t - *s);
548
549 /* else *s == *t but one is not NUL, so continue */
550 s++, t++;
551 }
552}
553
554static void
555append_acs0(string_desc * dst, int code, int src)
556{
557 if (src != 0) {
558 char temp[3];
559 temp[0] = (char) code;
560 temp[1] = (char) src;
561 temp[2] = 0;
562 _nc_safe_strcat(dst, temp);
563 }
564}
565
566static void
567append_acs(string_desc * dst, int code, char *src)
568{
569 if (src != 0 && strlen(src) == 1) {
570 append_acs0(dst, code, *src);
571 }
572}
573
574/*
575 * The ko capability, if present, consists of a comma-separated capability
576 * list. For each capability, we may assume there is a keycap that sends the
577 * string which is the value of that capability.
578 */
579typedef struct {
580 const char *from;
581 const char *to;
582} assoc;
583static assoc const ko_xlate[] =
584{
585 {"al", "kil1"}, /* insert line key -> KEY_IL */
586 {"bt", "kcbt"}, /* back tab -> KEY_BTAB */
587 {"cd", "ked"}, /* clear-to-eos key -> KEY_EOL */
588 {"ce", "kel"}, /* clear-to-eol key -> KEY_EOS */
589 {"cl", "kclr"}, /* clear key -> KEY_CLEAR */
590 {"ct", "tbc"}, /* clear all tabs -> KEY_CATAB */
591 {"dc", "kdch1"}, /* delete char -> KEY_DC */
592 {"dl", "kdl1"}, /* delete line -> KEY_DL */
593 {"do", "kcud1"}, /* down key -> KEY_DOWN */
594 {"ei", "krmir"}, /* exit insert key -> KEY_EIC */
595 {"ho", "khome"}, /* home key -> KEY_HOME */
596 {"ic", "kich1"}, /* insert char key -> KEY_IC */
597 {"im", "kIC"}, /* insert-mode key -> KEY_SIC */
598 {"le", "kcub1"}, /* le key -> KEY_LEFT */
599 {"nd", "kcuf1"}, /* nd key -> KEY_RIGHT */
600 {"nl", "kent"}, /* new line key -> KEY_ENTER */
601 {"st", "khts"}, /* set-tab key -> KEY_STAB */
602 {"ta", CANCELLED_STRING(char *)(-1)},
603 {"up", "kcuu1"}, /* up-arrow key -> KEY_UP */
604 {(char *) 0, (char *) 0},
605};
606
607/*
608 * This routine fills in string caps that either had defaults under
609 * termcap or can be manufactured from obsolete termcap capabilities.
610 * It was lifted from Ross Ridge's mytinfo package.
611 */
612
613static const char C_CR[] = "\r";
614static const char C_LF[] = "\n";
615static const char C_BS[] = "\b";
616static const char C_HT[] = "\t";
617
618/*
619 * Note that WANTED and PRESENT are not simple inverses! If a capability
620 * has been explicitly cancelled, it's not considered WANTED.
621 */
622#define WANTED(s)((s) == (char *)0) ((s) == ABSENT_STRING(char *)0)
623#define PRESENT(s)(((s) != (char *)0) && ((s) != (char *)(-1))) (((s) != ABSENT_STRING(char *)0) && ((s) != CANCELLED_STRING(char *)(-1)))
624
625/*
626 * This bit of legerdemain turns all the terminfo variable names into
627 * references to locations in the arrays Booleans, Numbers, and Strings ---
628 * precisely what's needed.
629 */
630
631#undef CURtp->
632#define CURtp-> tp->
633
634static void
635postprocess_termcap(TERMTYPE *tp, bool_Bool has_base)
636{
637 char buf[MAX_LINE132 * 2 + 2];
638 string_desc result;
639
640 /*
641 * TERMCAP DEFAULTS AND OBSOLETE-CAPABILITY TRANSLATIONS
642 *
643 * This first part of the code is the functional inverse of the
644 * fragment in capdefaults.c.
645 * ----------------------------------------------------------------------
646 */
647
648 /* if there was a tc entry, assume we picked up defaults via that */
649 if (!has_base) {
650 if (WANTED(init_3string)((tp-> Strings[50]) == (char *)0) && termcap_init2tp-> Strings[394])
651 init_3stringtp-> Strings[50] = _nc_save_str(termcap_init2tp-> Strings[394]);
652
653 if (WANTED(reset_2string)((tp-> Strings[123]) == (char *)0) && termcap_resettp-> Strings[395])
654 reset_2stringtp-> Strings[123] = _nc_save_str(termcap_resettp-> Strings[395]);
655
656 if (WANTED(carriage_return)((tp-> Strings[2]) == (char *)0)) {
657 if (carriage_return_delaytp-> Numbers[34] > 0) {
658 snprintf(buf, sizeof(buf), "%s$<%d>", C_CR, carriage_return_delaytp-> Numbers[34]);
659 carriage_returntp-> Strings[2] = _nc_save_str(buf);
660 } else
661 carriage_returntp-> Strings[2] = _nc_save_str(C_CR);
662 }
663 if (WANTED(cursor_left)((tp-> Strings[14]) == (char *)0)) {
664 if (backspace_delaytp-> Numbers[36] > 0) {
665 snprintf(buf, sizeof(buf), "%s$<%d>", C_BS, backspace_delaytp-> Numbers[36]);
666 cursor_lefttp-> Strings[14] = _nc_save_str(buf);
667 } else if (backspaces_with_bstp-> Booleans[37] == 1)
668 cursor_lefttp-> Strings[14] = _nc_save_str(C_BS);
669 else if (PRESENT(backspace_if_not_bs)(((tp-> Strings[397]) != (char *)0) && ((tp-> Strings
[397]) != (char *)(-1)))
)
670 cursor_lefttp-> Strings[14] = backspace_if_not_bstp-> Strings[397];
671 }
672 /* vi doesn't use "do", but it does seems to use nl (or '\n') instead */
673 if (WANTED(cursor_down)((tp-> Strings[11]) == (char *)0)) {
674 if (PRESENT(linefeed_if_not_lf)(((tp-> Strings[396]) != (char *)0) && ((tp-> Strings
[396]) != (char *)(-1)))
)
675 cursor_downtp-> Strings[11] = linefeed_if_not_lftp-> Strings[396];
676 else if (linefeed_is_newlinetp-> Booleans[41] != 1) {
677 if (new_line_delaytp-> Numbers[35] > 0) {
678 snprintf(buf, sizeof(buf), "%s$<%d>", C_LF, new_line_delaytp-> Numbers[35]);
679 cursor_downtp-> Strings[11] = _nc_save_str(buf);
680 } else
681 cursor_downtp-> Strings[11] = _nc_save_str(C_LF);
682 }
683 }
684 if (WANTED(scroll_forward)((tp-> Strings[129]) == (char *)0) && crt_no_scrollingtp-> Booleans[38] != 1) {
685 if (PRESENT(linefeed_if_not_lf)(((tp-> Strings[396]) != (char *)0) && ((tp-> Strings
[396]) != (char *)(-1)))
)
686 cursor_downtp-> Strings[11] = linefeed_if_not_lftp-> Strings[396];
687 else if (linefeed_is_newlinetp-> Booleans[41] != 1) {
688 if (new_line_delaytp-> Numbers[35] > 0) {
689 snprintf(buf, sizeof(buf), "%s$<%d>", C_LF, new_line_delaytp-> Numbers[35]);
690 scroll_forwardtp-> Strings[129] = _nc_save_str(buf);
691 } else
692 scroll_forwardtp-> Strings[129] = _nc_save_str(C_LF);
693 }
694 }
695 if (WANTED(newline)((tp-> Strings[103]) == (char *)0)) {
696 if (linefeed_is_newlinetp-> Booleans[41] == 1) {
697 if (new_line_delaytp-> Numbers[35] > 0) {
698 snprintf(buf, sizeof(buf), "%s$<%d>", C_LF, new_line_delaytp-> Numbers[35]);
699 newlinetp-> Strings[103] = _nc_save_str(buf);
700 } else
701 newlinetp-> Strings[103] = _nc_save_str(C_LF);
702 } else if (PRESENT(carriage_return)(((tp-> Strings[2]) != (char *)0) && ((tp-> Strings
[2]) != (char *)(-1)))
&& PRESENT(scroll_forward)(((tp-> Strings[129]) != (char *)0) && ((tp-> Strings
[129]) != (char *)(-1)))
) {
703 _nc_str_init(&result, buf, sizeof(buf));
704 if (_nc_safe_strcat(&result, carriage_returntp-> Strings[2])
705 && _nc_safe_strcat(&result, scroll_forwardtp-> Strings[129]))
706 newlinetp-> Strings[103] = _nc_save_str(buf);
707 } else if (PRESENT(carriage_return)(((tp-> Strings[2]) != (char *)0) && ((tp-> Strings
[2]) != (char *)(-1)))
&& PRESENT(cursor_down)(((tp-> Strings[11]) != (char *)0) && ((tp-> Strings
[11]) != (char *)(-1)))
) {
708 _nc_str_init(&result, buf, sizeof(buf));
709 if (_nc_safe_strcat(&result, carriage_returntp-> Strings[2])
710 && _nc_safe_strcat(&result, cursor_downtp-> Strings[11]))
711 newlinetp-> Strings[103] = _nc_save_str(buf);
712 }
713 }
714 }
715
716 /*
717 * Inverse of capdefaults.c code ends here.
718 * ----------------------------------------------------------------------
719 *
720 * TERMCAP-TO TERMINFO MAPPINGS FOR SOURCE TRANSLATION
721 *
722 * These translations will *not* be inverted by tgetent().
723 */
724
725 if (!has_base) {
726 /*
727 * We wait until now to decide if we've got a working cr because even
728 * one that doesn't work can be used for newline. Unfortunately the
729 * space allocated for it is wasted.
730 */
731 if (return_does_clr_eoltp-> Booleans[43] == 1 || no_correctly_working_crtp-> Booleans[39] == 1)
732 carriage_returntp-> Strings[2] = ABSENT_STRING(char *)0;
733
734 /*
735 * Supposedly most termcap entries have ta now and '\t' is no longer a
736 * default, but it doesn't seem to be true...
737 */
738 if (WANTED(tab)((tp-> Strings[134]) == (char *)0)) {
739 if (horizontal_tab_delaytp-> Numbers[37] > 0) {
740 snprintf(buf, sizeof(buf), "%s$<%d>", C_HT, horizontal_tab_delaytp-> Numbers[37]);
741 tabtp-> Strings[134] = _nc_save_str(buf);
742 } else
743 tabtp-> Strings[134] = _nc_save_str(C_HT);
744 }
745 if (init_tabstp-> Numbers[1] == ABSENT_NUMERIC(-1) && has_hardware_tabstp-> Booleans[42] == TRUE1)
746 init_tabstp-> Numbers[1] = 8;
747
748 /*
749 * Assume we can beep with ^G unless we're given bl@.
750 */
751 if (WANTED(bell)((tp-> Strings[1]) == (char *)0))
752 belltp-> Strings[1] = _nc_save_str("\007");
753 }
754
755 /*
756 * Translate the old termcap :pt: capability to it#8 + ht=\t
757 */
758 if (has_hardware_tabstp-> Booleans[42] == TRUE1) {
759 if (init_tabstp-> Numbers[1] != 8 && init_tabstp-> Numbers[1] != ABSENT_NUMERIC(-1))
760 _nc_warning("hardware tabs with a width other than 8: %d", init_tabstp-> Numbers[1]);
761 else {
762 if (tabtp-> Strings[134] && _nc_capcmp(tabtp-> Strings[134], C_HT))
763 _nc_warning("hardware tabs with a non-^I tab string %s",
764 _nc_visbuf(tabtp-> Strings[134]));
765 else {
766 if (WANTED(tab)((tp-> Strings[134]) == (char *)0))
767 tabtp-> Strings[134] = _nc_save_str(C_HT);
768 init_tabstp-> Numbers[1] = 8;
769 }
770 }
771 }
772 /*
773 * Now translate the ko capability, if there is one. This
774 * isn't from mytinfo...
775 */
776 if (PRESENT(other_non_function_keys)(((tp-> Strings[398]) != (char *)0) && ((tp-> Strings
[398]) != (char *)(-1)))
) {
777 char *base = other_non_function_keystp-> Strings[398];
Value stored to 'base' during its initialization is never read
778 char *bp, *cp, *dp;
779 struct name_table_entry const *from_ptr;
780 struct name_table_entry const *to_ptr;
781 assoc const *ap;
782 char buf2[MAX_TERMINFO_LENGTH4096];
783 bool_Bool foundim;
784
785 /* we're going to use this for a special case later */
786 dp = strchr(other_non_function_keystp-> Strings[398], 'i');
787 foundim = (dp != 0) && (dp[1] == 'm');
788
789 /* look at each comma-separated capability in the ko string... */
790 for (base = other_non_function_keystp-> Strings[398];
791 (cp = strchr(base, ',')) != 0;
792 base = cp + 1) {
793 size_t len = cp - base;
794
795 for (ap = ko_xlate; ap->from; ap++) {
796 if (len == strlen(ap->from)
797 && strncmp(ap->from, base, len) == 0)
798 break;
799 }
800 if (!(ap->from && ap->to)) {
801 _nc_warning("unknown capability `%.*s' in ko string",
802 (int) len, base);
803 continue;
804 } else if (ap->to == CANCELLED_STRING(char *)(-1)) /* ignore it */
805 continue;
806
807 /* now we know we found a match in ko_table, so... */
808
809 from_ptr = _nc_find_entry(ap->from, _nc_get_hash_table(TRUE1));
810 to_ptr = _nc_find_entry(ap->to, _nc_get_hash_table(FALSE0));
811
812 if (!from_ptr || !to_ptr) /* should never happen! */
813 _nc_err_abort("ko translation table is invalid, I give up");
814
815 if (WANTED(tp->Strings[from_ptr->nte_index])((tp->Strings[from_ptr->nte_index]) == (char *)0)) {
816 _nc_warning("no value for ko capability %s", ap->from);
817 continue;
818 }
819
820 if (tp->Strings[to_ptr->nte_index]) {
821 /* There's no point in warning about it if it's the same
822 * string; that's just an inefficiency.
823 */
824 if (strcmp(
825 tp->Strings[from_ptr->nte_index],
826 tp->Strings[to_ptr->nte_index]) != 0)
827 _nc_warning("%s (%s) already has an explicit value %s, ignoring ko",
828 ap->to, ap->from,
829 _nc_visbuf(tp->Strings[to_ptr->nte_index]));
830 continue;
831 }
832
833 /*
834 * The magic moment -- copy the mapped key string over,
835 * stripping out padding.
836 */
837 for (dp = buf2, bp = tp->Strings[from_ptr->nte_index]; *bp; bp++) {
838 if (bp[0] == '$' && bp[1] == '<') {
839 while (*bp && *bp != '>') {
840 ++bp;
841 }
842 } else
843 *dp++ = *bp;
844 }
845 *dp++ = '\0';
846
847 tp->Strings[to_ptr->nte_index] = _nc_save_str(buf2);
848 }
849
850 /*
851 * Note: ko=im and ko=ic both want to grab the `Insert'
852 * keycap. There's a kich1 but no ksmir, so the ic capability
853 * got mapped to kich1 and im to kIC to avoid a collision.
854 * If the description has im but not ic, hack kIC back to kich1.
855 */
856 if (foundim && WANTED(key_ic)((tp-> Strings[77]) == (char *)0) && key_sictp-> Strings[200]) {
857 key_ictp-> Strings[77] = key_sictp-> Strings[200];
858 key_sictp-> Strings[200] = ABSENT_STRING(char *)0;
859 }
860 }
861
862 if (!has_base) {
863 if (!hard_copytp-> Booleans[7]) {
864 if (WANTED(key_backspace)((tp-> Strings[55]) == (char *)0))
865 key_backspacetp-> Strings[55] = _nc_save_str(C_BS);
866 if (WANTED(key_left)((tp-> Strings[79]) == (char *)0))
867 key_lefttp-> Strings[79] = _nc_save_str(C_BS);
868 if (WANTED(key_down)((tp-> Strings[61]) == (char *)0))
869 key_downtp-> Strings[61] = _nc_save_str(C_LF);
870 }
871 }
872
873 /*
874 * Translate XENIX forms characters.
875 */
876 if (PRESENT(acs_ulcorner)(((tp-> Strings[400]) != (char *)0) && ((tp-> Strings
[400]) != (char *)(-1)))
||
877 PRESENT(acs_llcorner)(((tp-> Strings[401]) != (char *)0) && ((tp-> Strings
[401]) != (char *)(-1)))
||
878 PRESENT(acs_urcorner)(((tp-> Strings[402]) != (char *)0) && ((tp-> Strings
[402]) != (char *)(-1)))
||
879 PRESENT(acs_lrcorner)(((tp-> Strings[403]) != (char *)0) && ((tp-> Strings
[403]) != (char *)(-1)))
||
880 PRESENT(acs_ltee)(((tp-> Strings[404]) != (char *)0) && ((tp-> Strings
[404]) != (char *)(-1)))
||
881 PRESENT(acs_rtee)(((tp-> Strings[405]) != (char *)0) && ((tp-> Strings
[405]) != (char *)(-1)))
||
882 PRESENT(acs_btee)(((tp-> Strings[406]) != (char *)0) && ((tp-> Strings
[406]) != (char *)(-1)))
||
883 PRESENT(acs_ttee)(((tp-> Strings[407]) != (char *)0) && ((tp-> Strings
[407]) != (char *)(-1)))
||
884 PRESENT(acs_hline)(((tp-> Strings[408]) != (char *)0) && ((tp-> Strings
[408]) != (char *)(-1)))
||
885 PRESENT(acs_vline)(((tp-> Strings[409]) != (char *)0) && ((tp-> Strings
[409]) != (char *)(-1)))
||
886 PRESENT(acs_plus)(((tp-> Strings[410]) != (char *)0) && ((tp-> Strings
[410]) != (char *)(-1)))
) {
887 char buf2[MAX_TERMCAP_LENGTH1023];
888
889 _nc_str_init(&result, buf2, sizeof(buf2));
890 _nc_safe_strcat(&result, acs_charstp-> Strings[146]);
891
892 append_acs(&result, 'j', acs_lrcornertp-> Strings[403]);
893 append_acs(&result, 'k', acs_urcornertp-> Strings[402]);
894 append_acs(&result, 'l', acs_ulcornertp-> Strings[400]);
895 append_acs(&result, 'm', acs_llcornertp-> Strings[401]);
896 append_acs(&result, 'n', acs_plustp-> Strings[410]);
897 append_acs(&result, 'q', acs_hlinetp-> Strings[408]);
898 append_acs(&result, 't', acs_lteetp-> Strings[404]);
899 append_acs(&result, 'u', acs_rteetp-> Strings[405]);
900 append_acs(&result, 'v', acs_bteetp-> Strings[406]);
901 append_acs(&result, 'w', acs_tteetp-> Strings[407]);
902 append_acs(&result, 'x', acs_vlinetp-> Strings[409]);
903
904 if (buf2[0]) {
905 acs_charstp-> Strings[146] = _nc_save_str(buf2);
906 _nc_warning("acsc string synthesized from XENIX capabilities");
907 }
908 } else if (acs_charstp-> Strings[146] == 0
909 && enter_alt_charset_modetp-> Strings[25] != 0
910 && exit_alt_charset_modetp-> Strings[38] != 0) {
911 acs_charstp-> Strings[146] = _nc_save_str(VT_ACSC"``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~");
912 }
913}
914
915static void
916postprocess_terminfo(TERMTYPE *tp)
917{
918 /*
919 * TERMINFO-TO-TERMINFO MAPPINGS FOR SOURCE TRANSLATION
920 * ----------------------------------------------------------------------
921 */
922
923 /*
924 * Translate AIX forms characters.
925 */
926 if (PRESENT(box_chars_1)(((tp-> Strings[413]) != (char *)0) && ((tp-> Strings
[413]) != (char *)(-1)))
) {
927 char buf2[MAX_TERMCAP_LENGTH1023];
928 string_desc result;
929
930 _nc_str_init(&result, buf2, sizeof(buf2));
931 _nc_safe_strcat(&result, acs_charstp-> Strings[146]);
932
933 append_acs0(&result, 'l', box_chars_1tp-> Strings[413][0]); /* ACS_ULCORNER */
934 append_acs0(&result, 'q', box_chars_1tp-> Strings[413][1]); /* ACS_HLINE */
935 append_acs0(&result, 'k', box_chars_1tp-> Strings[413][2]); /* ACS_URCORNER */
936 append_acs0(&result, 'x', box_chars_1tp-> Strings[413][3]); /* ACS_VLINE */
937 append_acs0(&result, 'j', box_chars_1tp-> Strings[413][4]); /* ACS_LRCORNER */
938 append_acs0(&result, 'm', box_chars_1tp-> Strings[413][5]); /* ACS_LLCORNER */
939 append_acs0(&result, 'w', box_chars_1tp-> Strings[413][6]); /* ACS_TTEE */
940 append_acs0(&result, 'u', box_chars_1tp-> Strings[413][7]); /* ACS_RTEE */
941 append_acs0(&result, 'v', box_chars_1tp-> Strings[413][8]); /* ACS_BTEE */
942 append_acs0(&result, 't', box_chars_1tp-> Strings[413][9]); /* ACS_LTEE */
943 append_acs0(&result, 'n', box_chars_1tp-> Strings[413][10]); /* ACS_PLUS */
944
945 if (buf2[0]) {
946 acs_charstp-> Strings[146] = _nc_save_str(buf2);
947 _nc_warning("acsc string synthesized from AIX capabilities");
948 box_chars_1tp-> Strings[413] = ABSENT_STRING(char *)0;
949 }
950 }
951 /*
952 * ----------------------------------------------------------------------
953 */
954}
955
956/*
957 * Do a linear search through the terminfo tables to find a given full-name.
958 * We don't expect to do this often, so there's no hashing function.
959 *
960 * In effect, this scans through the 3 lists of full-names, and looks them
961 * up in _nc_info_table, which is organized so that the nte_index fields are
962 * sorted, but the nte_type fields are not necessarily grouped together.
963 */
964static struct name_table_entry const *
965lookup_fullname(const char *find)
966{
967 int state = -1;
968
969 for (;;) {
970 int count = 0;
971 NCURSES_CONSTconst char *const *names;
972
973 switch (++state) {
974 case BOOLEAN0:
975 names = boolfnames;
976 break;
977 case STRING2:
978 names = strfnames;
979 break;
980 case NUMBER1:
981 names = numfnames;
982 break;
983 default:
984 return NOTFOUND((struct name_table_entry *) 0);
985 }
986
987 for (count = 0; names[count] != 0; count++) {
988 if (!strcmp(names[count], find)) {
989 struct name_table_entry const *entry_ptr = _nc_get_table(FALSE0);
990 while (entry_ptr->nte_type != state
991 || entry_ptr->nte_index != count)
992 entry_ptr++;
993 return entry_ptr;
994 }
995 }
996 }
997}
998
999/* parse_entry.c ends here */