xref: /openbsd/lib/libcurses/tinfo/comp_parse.c (revision c7ef0cfc)
1 /* $OpenBSD: comp_parse.c,v 1.13 2023/10/17 09:52:09 nicm Exp $ */
2 
3 /****************************************************************************
4  * Copyright 2018-2022,2023 Thomas E. Dickey                                *
5  * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
6  *                                                                          *
7  * Permission is hereby granted, free of charge, to any person obtaining a  *
8  * copy of this software and associated documentation files (the            *
9  * "Software"), to deal in the Software without restriction, including      *
10  * without limitation the rights to use, copy, modify, merge, publish,      *
11  * distribute, distribute with modifications, sublicense, and/or sell       *
12  * copies of the Software, and to permit persons to whom the Software is    *
13  * furnished to do so, subject to the following conditions:                 *
14  *                                                                          *
15  * The above copyright notice and this permission notice shall be included  *
16  * in all copies or substantial portions of the Software.                   *
17  *                                                                          *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
21  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
24  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
25  *                                                                          *
26  * Except as contained in this notice, the name(s) of the above copyright   *
27  * holders shall not be used in advertising or otherwise to promote the     *
28  * sale, use or other dealings in this Software without prior written       *
29  * authorization.                                                           *
30  ****************************************************************************/
31 
32 /****************************************************************************
33  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
34  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
35  *     and: Thomas E. Dickey                        1996-on                 *
36  ****************************************************************************/
37 
38 /*
39  *	comp_parse.c -- parser driver loop and use handling.
40  *
41  *	Use this code by calling _nc_read_entry_source() on as many source
42  *	files as you like (either terminfo or termcap syntax).  If you
43  *	want use-resolution, call _nc_resolve_uses2().  To free the list
44  *	storage, do _nc_free_entries().
45  */
46 
47 #include <curses.priv.h>
48 
49 #include <ctype.h>
50 
51 #include <tic.h>
52 
53 MODULE_ID("$Id: comp_parse.c,v 1.13 2023/10/17 09:52:09 nicm Exp $")
54 
55 static void sanity_check2(TERMTYPE2 *, bool);
56 NCURSES_IMPEXP void (NCURSES_API *_nc_check_termtype2) (TERMTYPE2 *, bool) = sanity_check2;
57 
58 static void fixup_acsc(TERMTYPE2 *, int);
59 
60 static void
enqueue(ENTRY * ep)61 enqueue(ENTRY * ep)
62 /* add an entry to the in-core list */
63 {
64     ENTRY *newp;
65 
66     DEBUG(2, (T_CALLED("enqueue(ep=%p)"), (void *) ep));
67 
68     newp = _nc_copy_entry(ep);
69     if (newp == 0)
70 	_nc_err_abort(MSG_NO_MEMORY);
71 
72     newp->last = _nc_tail;
73     _nc_tail = newp;
74 
75     newp->next = 0;
76     if (newp->last)
77 	newp->last->next = newp;
78     DEBUG(2, (T_RETURN("")));
79 }
80 
81 #define NAMEBUFFER_SIZE (MAX_NAME_SIZE + 2)
82 
83 static char *
force_bar(char * dst,char * src)84 force_bar(char *dst, char *src)
85 {
86     if (strchr(src, '|') == 0) {
87 	size_t len = strlen(src);
88 	if (len > MAX_NAME_SIZE)
89 	    len = MAX_NAME_SIZE;
90 	_nc_STRNCPY(dst, src, MAX_NAME_SIZE);
91 	_nc_STRCPY(dst + len, "|", NAMEBUFFER_SIZE - len);
92 	src = dst;
93     }
94     return src;
95 }
96 #define ForceBar(dst, src) ((strchr(src, '|') == 0) ? force_bar(dst, src) : src)
97 
98 #if NCURSES_USE_TERMCAP && NCURSES_XNAMES
99 static char *
skip_index(char * name)100 skip_index(char *name)
101 {
102     char *bar = strchr(name, '|');
103 
104     if (bar != 0 && (bar - name) == 2)
105 	name = bar + 1;
106 
107     return name;
108 }
109 #endif
110 
111 static bool
check_collisions(char * n1,char * n2,int counter)112 check_collisions(char *n1, char *n2, int counter)
113 {
114     char *pstart, *qstart, *pend, *qend;
115     char nc1[NAMEBUFFER_SIZE];
116     char nc2[NAMEBUFFER_SIZE];
117 
118     n1 = ForceBar(nc1, n1);
119     n2 = ForceBar(nc2, n2);
120 
121 #if NCURSES_USE_TERMCAP && NCURSES_XNAMES
122     if ((_nc_syntax == SYN_TERMCAP) && _nc_user_definable) {
123 	n1 = skip_index(n1);
124 	n2 = skip_index(n2);
125     }
126 #endif
127 
128     for (pstart = n1; (pend = strchr(pstart, '|')); pstart = pend + 1) {
129 	for (qstart = n2; (qend = strchr(qstart, '|')); qstart = qend + 1) {
130 	    if ((pend - pstart == qend - qstart)
131 		&& memcmp(pstart, qstart, (size_t) (pend - pstart)) == 0) {
132 		if (counter > 0)
133 		    (void) fprintf(stderr, "Name collision '%.*s' between\n",
134 				   (int) (pend - pstart), pstart);
135 		return (TRUE);
136 	    }
137 	}
138     }
139 
140     return (FALSE);
141 }
142 
143 static char *
next_name(char * name)144 next_name(char *name)
145 {
146     if (*name != '\0')
147 	++name;
148     return name;
149 }
150 
151 static char *
name_ending(char * name)152 name_ending(char *name)
153 {
154     if (*name == '\0') {
155 	name = 0;
156     } else {
157 	while (*name != '\0' && *name != '|')
158 	    ++name;
159     }
160     return name;
161 }
162 
163 /*
164  * Essentially, find the conflict reported in check_collisions() and remove
165  * it from the second name, unless that happens to be the last alias.
166  */
167 static bool
remove_collision(char * n1,char * n2)168 remove_collision(char *n1, char *n2)
169 {
170     char *p2 = n2;
171     char *pstart, *qstart, *pend, *qend;
172     bool removed = FALSE;
173 
174 #if NCURSES_USE_TERMCAP && NCURSES_XNAMES
175     if ((_nc_syntax == SYN_TERMCAP) && _nc_user_definable) {
176 	n1 = skip_index(n1);
177 	p2 = n2 = skip_index(n2);
178     }
179 #endif
180 
181     for (pstart = n1; (pend = name_ending(pstart)); pstart = next_name(pend)) {
182 	for (qstart = n2; (qend = name_ending(qstart)); qstart = next_name(qend)) {
183 	    if ((pend - pstart == qend - qstart)
184 		&& memcmp(pstart, qstart, (size_t) (pend - pstart)) == 0) {
185 		if (qstart != p2 || *qend == '|') {
186 		    if (*qend == '|')
187 			++qend;
188 		    while ((*qstart++ = *qend++) != '\0') ;
189 		    fprintf(stderr, "...now\t%s\n", p2);
190 		    removed = TRUE;
191 		} else {
192 		    fprintf(stderr, "Cannot remove alias '%.*s'\n",
193 			    (int) (qend - qstart), qstart);
194 		}
195 		break;
196 	    }
197 	}
198     }
199 
200     return removed;
201 }
202 
203 /* do any of the aliases in a pair of terminal names match? */
204 NCURSES_EXPORT(bool)
_nc_entry_match(char * n1,char * n2)205 _nc_entry_match(char *n1, char *n2)
206 {
207     return check_collisions(n1, n2, 0);
208 }
209 
210 /****************************************************************************
211  *
212  * Entry compiler and resolution logic
213  *
214  ****************************************************************************/
215 
216 NCURSES_EXPORT(void)
_nc_read_entry_source(FILE * fp,char * buf,int literal,bool silent,bool (* hook)(ENTRY *))217 _nc_read_entry_source(FILE *fp, char *buf,
218 		      int literal, bool silent,
219 		      bool(*hook) (ENTRY *))
220 /* slurp all entries in the given file into core */
221 {
222     ENTRY thisentry;
223     bool oldsuppress = _nc_suppress_warnings;
224     int immediate = 0;
225 
226     DEBUG(2,
227 	  (T_CALLED("_nc_read_entry_source("
228 		    "file=%p, buf=%p, literal=%d, silent=%d, hook=%#"
229 		    PRIxPTR ")"),
230 	   (void *) fp, buf, literal, silent, CASTxPTR(hook)));
231 
232     if (silent)
233 	_nc_suppress_warnings = TRUE;	/* shut the lexer up, too */
234 
235     _nc_reset_input(fp, buf);
236     for (;;) {
237 	memset(&thisentry, 0, sizeof(thisentry));
238 	if (_nc_parse_entry(&thisentry, literal, silent) == ERR)
239 	    break;
240 	if (!isalnum(UChar(thisentry.tterm.term_names[0])))
241 	    _nc_err_abort("terminal names must start with letter or digit");
242 
243 	/*
244 	 * This can be used for immediate compilation of entries with no "use="
245 	 * references to disk.  That avoids consuming a lot of memory when the
246 	 * resolution code could fetch entries off disk.
247 	 */
248 	if (hook != NULLHOOK && (*hook) (&thisentry)) {
249 	    immediate++;
250 	} else {
251 	    enqueue(&thisentry);
252 	    /*
253 	     * The enqueued entry is copied with _nc_copy_termtype(), so we can
254 	     * free some of the data from thisentry, i.e., the arrays.
255 	     */
256 	    FreeIfNeeded(thisentry.tterm.Booleans);
257 	    FreeIfNeeded(thisentry.tterm.Numbers);
258 	    FreeIfNeeded(thisentry.tterm.Strings);
259 	    FreeIfNeeded(thisentry.tterm.str_table);
260 #if NCURSES_XNAMES
261 	    FreeIfNeeded(thisentry.tterm.ext_Names);
262 	    FreeIfNeeded(thisentry.tterm.ext_str_table);
263 #endif
264 	}
265     }
266 
267     if (_nc_tail) {
268 	/* set up the head pointer */
269 	for (_nc_head = _nc_tail; _nc_head->last; _nc_head = _nc_head->last) {
270 	    /* EMPTY */ ;
271 	}
272 
273 	DEBUG(2, ("head = %s", _nc_head->tterm.term_names));
274 	DEBUG(2, ("tail = %s", _nc_tail->tterm.term_names));
275     }
276 #ifdef TRACE
277     else if (!immediate)
278 	DEBUG(2, ("no entries parsed"));
279 #endif
280 
281     _nc_suppress_warnings = oldsuppress;
282     DEBUG(2, (T_RETURN("")));
283 }
284 
285 #if 0 && NCURSES_XNAMES
286 static unsigned
287 find_capname(TERMTYPE2 *p, const char *name)
288 {
289     unsigned num_names = NUM_EXT_NAMES(p);
290     unsigned n;
291     if (name != 0) {
292 	for (n = 0; n < num_names; ++n) {
293 	    if (!strcmp(p->ext_Names[n], name))
294 		break;
295 	}
296     } else {
297 	n = num_names + 1;
298     }
299     return n;
300 }
301 
302 static int
303 extended_captype(TERMTYPE2 *p, unsigned which)
304 {
305     int result = UNDEF;
306     unsigned limit = 0;
307     limit += p->ext_Booleans;
308     if (limit != 0 && which < limit) {
309 	result = BOOLEAN;
310     } else {
311 	limit += p->ext_Numbers;
312 	if (limit != 0 && which < limit) {
313 	    result = NUMBER;
314 	} else {
315 	    limit += p->ext_Strings;
316 	    if (limit != 0 && which < limit) {
317 		result = ((p->Strings[STRCOUNT + which] != CANCELLED_STRING)
318 			  ? STRING
319 			  : CANCEL);
320 	    } else if (which >= limit) {
321 		result = CANCEL;
322 	    }
323 	}
324     }
325     return result;
326 }
327 
328 static const char *
329 name_of_captype(int which)
330 {
331     const char *result = "?";
332     switch (which) {
333     case BOOLEAN:
334 	result = "boolean";
335 	break;
336     case NUMBER:
337 	result = "number";
338 	break;
339     case STRING:
340 	result = "string";
341 	break;
342     }
343     return result;
344 }
345 
346 #define valid_TERMTYPE2(p) \
347 	((p) != 0 && \
348 	 (p)->term_names != 0 && \
349 	 (p)->ext_Names != 0)
350 
351 /*
352  * Disallow changing the type of an extended capability when doing a "use"
353  * if one or the other is a string.
354  */
355 static int
356 invalid_merge(TERMTYPE2 *to, TERMTYPE2 *from)
357 {
358     int rc = FALSE;
359     if (valid_TERMTYPE2(to)
360 	&& valid_TERMTYPE2(from)) {
361 	char *to_name = _nc_first_name(to->term_names);
362 	char *from_name = strdup(_nc_first_name(from->term_names));
363 	unsigned num_names = NUM_EXT_NAMES(from);
364 	unsigned n;
365 
366 	for (n = 0; n < num_names; ++n) {
367 	    const char *capname = from->ext_Names[n];
368 	    int tt = extended_captype(to, find_capname(to, capname));
369 	    int tf = extended_captype(from, n);
370 
371 	    if (tt <= STRING
372 		&& tf <= STRING
373 		&& (tt == STRING) != (tf == STRING)) {
374 		if (from_name != 0 && strcmp(to_name, from_name)) {
375 		    _nc_warning("merge of %s to %s changes type of %s from %s to %s",
376 				from_name,
377 				to_name,
378 				from->ext_Names[n],
379 				name_of_captype(tf),
380 				name_of_captype(tt));
381 		} else {
382 		    _nc_warning("merge of %s changes type of %s from %s to %s",
383 				to_name,
384 				from->ext_Names[n],
385 				name_of_captype(tf),
386 				name_of_captype(tt));
387 		}
388 		rc = TRUE;
389 	    }
390 	}
391 	free(from_name);
392     }
393     return rc;
394 }
395 #define validate_merge(p, q) \
396 	if (invalid_merge(&((p)->tterm), &((q)->tterm))) \
397 		return FALSE
398 #else
399 #define validate_merge(p, q)	/* nothing */
400 #endif
401 
402 NCURSES_EXPORT(int)
_nc_resolve_uses2(bool fullresolve,bool literal)403 _nc_resolve_uses2(bool fullresolve, bool literal)
404 /* try to resolve all use capabilities */
405 {
406     ENTRY *qp, *rp, *lastread = 0;
407     bool keepgoing;
408     unsigned i, j;
409     int unresolved, total_unresolved, multiples;
410 
411     DEBUG(2, (T_CALLED("_nc_resolve_uses2")));
412 
413     /*
414      * Check for multiple occurrences of the same name.
415      */
416     multiples = 0;
417     for_entry_list(qp) {
418 	int matchcount = 0;
419 
420 	for_entry_list2(rp, qp->next) {
421 	    if (qp > rp
422 		&& check_collisions(qp->tterm.term_names,
423 				    rp->tterm.term_names,
424 				    matchcount + 1)) {
425 		if (!matchcount++) {
426 		    (void) fprintf(stderr, "\t%s\n", rp->tterm.term_names);
427 		}
428 		(void) fprintf(stderr, "and\t%s\n", qp->tterm.term_names);
429 		if (!remove_collision(rp->tterm.term_names,
430 				      qp->tterm.term_names)) {
431 		    ++multiples;
432 		}
433 	    }
434 	}
435     }
436     if (multiples > 0) {
437 	DEBUG(2, (T_RETURN("false")));
438 	return (FALSE);
439     }
440 
441     DEBUG(2, ("NO MULTIPLE NAME OCCURRENCES"));
442 
443     /*
444      * First resolution stage: compute link pointers corresponding to names.
445      */
446     total_unresolved = 0;
447     _nc_curr_col = -1;
448     for_entry_list(qp) {
449 	unresolved = 0;
450 	for (i = 0; i < qp->nuses; i++) {
451 	    bool foundit;
452 	    char *child = _nc_first_name(qp->tterm.term_names);
453 	    char *lookfor = qp->uses[i].name;
454 	    long lookline = qp->uses[i].line;
455 
456 	    if (lookfor == 0)
457 		continue;
458 
459 	    foundit = FALSE;
460 
461 	    _nc_set_type(child);
462 
463 	    /* first, try to resolve from in-core records */
464 	    for_entry_list(rp) {
465 		if (rp != qp
466 		    && _nc_name_match(rp->tterm.term_names, lookfor, "|")) {
467 		    DEBUG(2, ("%s: resolving use=%s %p (in core)",
468 			      child, lookfor, lookfor));
469 
470 		    qp->uses[i].link = rp;
471 		    foundit = TRUE;
472 
473 		    /* verify that there are no earlier uses */
474 		    for (j = 0; j < i; ++j) {
475 			if (qp->uses[j].link != NULL
476 			    && !strcmp(qp->uses[j].link->tterm.term_names,
477 				       rp->tterm.term_names)) {
478 			    _nc_warning("duplicate use=%s", lookfor);
479 			    break;
480 			}
481 		    }
482 		}
483 	    }
484 
485 	    /* if that didn't work, try to merge in a compiled entry */
486 	    if (!foundit) {
487 		TERMTYPE2 thisterm;
488 		char filename[PATH_MAX];
489 
490 		memset(&thisterm, 0, sizeof(thisterm));
491 		if (_nc_read_entry2(lookfor, filename, &thisterm) == 1) {
492 		    DEBUG(2, ("%s: resolving use=%s (compiled)",
493 			      child, lookfor));
494 
495 		    TYPE_MALLOC(ENTRY, 1, rp);
496 		    rp->tterm = thisterm;
497 		    rp->nuses = 0;
498 		    rp->next = lastread;
499 		    lastread = rp;
500 
501 		    qp->uses[i].link = rp;
502 		    foundit = TRUE;
503 
504 		    /* verify that there are no earlier uses */
505 		    for (j = 0; j < i; ++j) {
506 			if (qp->uses[j].link != NULL
507 			    && !strcmp(qp->uses[j].link->tterm.term_names,
508 				       rp->tterm.term_names)) {
509 			    _nc_warning("duplicate use=%s", lookfor);
510 			    break;
511 			}
512 		    }
513 		}
514 	    }
515 
516 	    /* no good, mark this one unresolvable and complain */
517 	    if (!foundit) {
518 		unresolved++;
519 		total_unresolved++;
520 
521 		_nc_curr_line = (int) lookline;
522 		_nc_warning("resolution of use=%s failed", lookfor);
523 		qp->uses[i].link = 0;
524 	    }
525 	}
526     }
527     if (total_unresolved) {
528 	/* free entries read in off disk */
529 	_nc_free_entries(lastread);
530 	DEBUG(2, (T_RETURN("false")));
531 	return (FALSE);
532     }
533 
534     DEBUG(2, ("NAME RESOLUTION COMPLETED OK"));
535 
536     /*
537      * OK, at this point all (char *) references in `name' members
538      * have been successfully converted to (ENTRY *) pointers in
539      * `link' members.  Time to do the actual merges.
540      */
541     if (fullresolve) {
542 	do {
543 	    ENTRY merged;
544 
545 	    keepgoing = FALSE;
546 
547 	    for_entry_list(qp) {
548 		if (qp->nuses > 0) {
549 		    DEBUG(2, ("%s: attempting merge of %d entries",
550 			      _nc_first_name(qp->tterm.term_names),
551 			      qp->nuses));
552 		    /*
553 		     * If any of the use entries we're looking for is
554 		     * incomplete, punt.  We'll catch this entry on a
555 		     * subsequent pass.
556 		     */
557 		    for (i = 0; i < qp->nuses; i++) {
558 			if (qp->uses[i].link
559 			    && qp->uses[i].link->nuses) {
560 			    DEBUG(2, ("%s: use entry %d unresolved",
561 				      _nc_first_name(qp->tterm.term_names), i));
562 			    goto incomplete;
563 			}
564 		    }
565 
566 		    /*
567 		     * First, make sure there is no garbage in the
568 		     * merge block.  As a side effect, copy into
569 		     * the merged entry the name field and string
570 		     * table pointer.
571 		     */
572 		    _nc_copy_termtype2(&(merged.tterm), &(qp->tterm));
573 
574 		    /*
575 		     * Now merge in each use entry in the proper
576 		     * (reverse) order.
577 		     */
578 		    for (; qp->nuses; qp->nuses--) {
579 			int n = (int) (qp->nuses - 1);
580 			validate_merge(&merged, qp->uses[n].link);
581 			_nc_merge_entry(&merged, qp->uses[n].link);
582 			free(qp->uses[n].name);
583 		    }
584 
585 		    /*
586 		     * Now merge in the original entry.
587 		     */
588 		    validate_merge(&merged, qp);
589 		    _nc_merge_entry(&merged, qp);
590 
591 		    /*
592 		     * Replace the original entry with the merged one.
593 		     */
594 		    FreeIfNeeded(qp->tterm.Booleans);
595 		    FreeIfNeeded(qp->tterm.Numbers);
596 		    FreeIfNeeded(qp->tterm.Strings);
597 		    FreeIfNeeded(qp->tterm.str_table);
598 #if NCURSES_XNAMES
599 		    FreeIfNeeded(qp->tterm.ext_Names);
600 		    FreeIfNeeded(qp->tterm.ext_str_table);
601 #endif
602 		    qp->tterm = merged.tterm;
603 		    _nc_wrap_entry(qp, TRUE);
604 
605 		    /*
606 		     * We know every entry is resolvable because name resolution
607 		     * didn't bomb.  So go back for another pass.
608 		     */
609 		    /* FALLTHRU */
610 		  incomplete:
611 		    keepgoing = TRUE;
612 		}
613 	    }
614 	} while
615 	    (keepgoing);
616 
617 	DEBUG(2, ("MERGES COMPLETED OK"));
618     }
619 
620     DEBUG(2, ("RESOLUTION FINISHED"));
621 
622     if (fullresolve) {
623 	_nc_curr_col = -1;
624 	for_entry_list(qp) {
625 	    _nc_curr_line = (int) qp->startline;
626 	    _nc_set_type(_nc_first_name(qp->tterm.term_names));
627 	    /*
628 	     * tic overrides this function pointer to provide more verbose
629 	     * checking.
630 	     */
631 	    if (_nc_check_termtype2 != sanity_check2) {
632 		SCREEN *save_SP = SP;
633 		SCREEN fake_sp;
634 		TERMINAL fake_tm;
635 		TERMINAL *save_tm = cur_term;
636 
637 		/*
638 		 * Setup so that tic can use ordinary terminfo interface to
639 		 * obtain capability information.
640 		 */
641 		memset(&fake_sp, 0, sizeof(fake_sp));
642 		memset(&fake_tm, 0, sizeof(fake_tm));
643 		fake_sp._term = &fake_tm;
644 		TerminalType(&fake_tm) = qp->tterm;
645 		_nc_set_screen(&fake_sp);
646 		set_curterm(&fake_tm);
647 
648 		_nc_check_termtype2(&qp->tterm, literal);
649 
650 		/*
651 		 * Checking calls tparm, which can allocate memory.  Fix leaks.
652 		 */
653 #define TPS(name) fake_tm.tparm_state.name
654 		FreeAndNull(TPS(out_buff));
655 		FreeAndNull(TPS(fmt_buff));
656 #undef TPS
657 
658 		_nc_set_screen(save_SP);
659 		set_curterm(save_tm);
660 	    } else {
661 		fixup_acsc(&qp->tterm, literal);
662 	    }
663 	}
664 	DEBUG(2, ("SANITY CHECK FINISHED"));
665     }
666 
667     DEBUG(2, (T_RETURN("true")));
668     return (TRUE);
669 }
670 
671 /*
672  * This bit of legerdemain turns all the terminfo variable names into
673  * references to locations in the arrays Booleans, Numbers, and Strings ---
674  * precisely what's needed.
675  */
676 
677 #undef CUR
678 #define CUR tp->
679 
680 static void
fixup_acsc(TERMTYPE2 * tp,int literal)681 fixup_acsc(TERMTYPE2 *tp, int literal)
682 {
683     if (!literal) {
684 	if (acs_chars == ABSENT_STRING
685 	    && PRESENT(enter_alt_charset_mode)
686 	    && PRESENT(exit_alt_charset_mode))
687 	    acs_chars = strdup(VT_ACSC);
688     }
689 }
690 
691 static void
sanity_check2(TERMTYPE2 * tp,bool literal)692 sanity_check2(TERMTYPE2 *tp, bool literal)
693 {
694     if (!PRESENT(exit_attribute_mode)) {
695 #ifdef __UNUSED__		/* this casts too wide a net */
696 	bool terminal_entry = !strchr(tp->term_names, '+');
697 	if (terminal_entry &&
698 	    (PRESENT(set_attributes)
699 	     || PRESENT(enter_standout_mode)
700 	     || PRESENT(enter_underline_mode)
701 	     || PRESENT(enter_blink_mode)
702 	     || PRESENT(enter_bold_mode)
703 	     || PRESENT(enter_dim_mode)
704 	     || PRESENT(enter_secure_mode)
705 	     || PRESENT(enter_protected_mode)
706 	     || PRESENT(enter_reverse_mode)))
707 	    _nc_warning("no exit_attribute_mode");
708 #endif /* __UNUSED__ */
709 	PAIRED(enter_standout_mode, exit_standout_mode);
710 	PAIRED(enter_underline_mode, exit_underline_mode);
711 #if defined(enter_italics_mode) && defined(exit_italics_mode)
712 	PAIRED(enter_italics_mode, exit_italics_mode);
713 #endif
714     }
715 
716     /* we do this check/fix in postprocess_termcap(), but some packagers
717      * prefer to bypass it...
718      */
719     if (!literal) {
720 	fixup_acsc(tp, literal);
721 	ANDMISSING(enter_alt_charset_mode, acs_chars);
722 	ANDMISSING(exit_alt_charset_mode, acs_chars);
723     }
724 
725     /* listed in structure-member order of first argument */
726     PAIRED(enter_alt_charset_mode, exit_alt_charset_mode);
727     ANDMISSING(enter_blink_mode, exit_attribute_mode);
728     ANDMISSING(enter_bold_mode, exit_attribute_mode);
729     PAIRED(exit_ca_mode, enter_ca_mode);
730     PAIRED(enter_delete_mode, exit_delete_mode);
731     ANDMISSING(enter_dim_mode, exit_attribute_mode);
732     PAIRED(enter_insert_mode, exit_insert_mode);
733     ANDMISSING(enter_secure_mode, exit_attribute_mode);
734     ANDMISSING(enter_protected_mode, exit_attribute_mode);
735     ANDMISSING(enter_reverse_mode, exit_attribute_mode);
736     PAIRED(from_status_line, to_status_line);
737     PAIRED(meta_off, meta_on);
738 
739     PAIRED(prtr_on, prtr_off);
740     PAIRED(save_cursor, restore_cursor);
741     PAIRED(enter_xon_mode, exit_xon_mode);
742     PAIRED(enter_am_mode, exit_am_mode);
743     ANDMISSING(label_off, label_on);
744 #if defined(display_clock) && defined(remove_clock)
745     PAIRED(display_clock, remove_clock);
746 #endif
747     ANDMISSING(set_color_pair, initialize_pair);
748 }
749 
750 #if NO_LEAKS
751 NCURSES_EXPORT(void)
_nc_leaks_tic(void)752 _nc_leaks_tic(void)
753 {
754     T((T_CALLED("_nc_leaks_tic()")));
755     _nc_globals.leak_checking = TRUE;
756     _nc_alloc_entry_leaks();
757     _nc_captoinfo_leaks();
758     _nc_comp_scan_leaks();
759 #if BROKEN_LINKER || USE_REENTRANT
760     _nc_names_leaks();
761     _nc_codes_leaks();
762 #endif
763     _nc_tic_expand(0, FALSE, 0);
764     T((T_RETURN("")));
765 }
766 
767 NCURSES_EXPORT(void)
_nc_free_tic(int code)768 _nc_free_tic(int code)
769 {
770     T((T_CALLED("_nc_free_tic(%d)"), code));
771     _nc_leaks_tic();
772     exit_terminfo(code);
773 }
774 #endif
775