1 /****************************************************************************
2  * Copyright 2018-2019,2020 Thomas E. Dickey                                *
3  * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
4  *                                                                          *
5  * Permission is hereby granted, free of charge, to any person obtaining a  *
6  * copy of this software and associated documentation files (the            *
7  * "Software"), to deal in the Software without restriction, including      *
8  * without limitation the rights to use, copy, modify, merge, publish,      *
9  * distribute, distribute with modifications, sublicense, and/or sell       *
10  * copies of the Software, and to permit persons to whom the Software is    *
11  * furnished to do so, subject to the following conditions:                 *
12  *                                                                          *
13  * The above copyright notice and this permission notice shall be included  *
14  * in all copies or substantial portions of the Software.                   *
15  *                                                                          *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23  *                                                                          *
24  * Except as contained in this notice, the name(s) of the above copyright   *
25  * holders shall not be used in advertising or otherwise to promote the     *
26  * sale, use or other dealings in this Software without prior written       *
27  * authorization.                                                           *
28  ****************************************************************************/
29 
30 /****************************************************************************
31  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
32  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
33  *     and: Thomas E. Dickey                        1996-on                 *
34  ****************************************************************************/
35 
36 /*
37  *	comp_parse.c -- parser driver loop and use handling.
38  *
39  *	Use this code by calling _nc_read_entry_source() on as many source
40  *	files as you like (either terminfo or termcap syntax).  If you
41  *	want use-resolution, call _nc_resolve_uses2().  To free the list
42  *	storage, do _nc_free_entries().
43  */
44 
45 #include <curses.priv.h>
46 
47 #include <ctype.h>
48 
49 #include <tic.h>
50 
51 MODULE_ID("$Id: comp_parse.c,v 1.110 2020/02/29 15:46:00 anonymous.maarten Exp $")
52 
53 static void sanity_check2(TERMTYPE2 *, bool);
54 NCURSES_IMPEXP void (NCURSES_API *_nc_check_termtype2) (TERMTYPE2 *, bool) = sanity_check2;
55 
56 static void fixup_acsc(TERMTYPE2 *, int);
57 
58 static void
enqueue(ENTRY * ep)59 enqueue(ENTRY * ep)
60 /* add an entry to the in-core list */
61 {
62     ENTRY *newp = _nc_copy_entry(ep);
63 
64     if (newp == 0)
65 	_nc_err_abort(MSG_NO_MEMORY);
66 
67     newp->last = _nc_tail;
68     _nc_tail = newp;
69 
70     newp->next = 0;
71     if (newp->last)
72 	newp->last->next = newp;
73 }
74 
75 #define NAMEBUFFER_SIZE (MAX_NAME_SIZE + 2)
76 
77 static char *
force_bar(char * dst,char * src)78 force_bar(char *dst, char *src)
79 {
80     if (strchr(src, '|') == 0) {
81 	size_t len = strlen(src);
82 	if (len > MAX_NAME_SIZE)
83 	    len = MAX_NAME_SIZE;
84 	_nc_STRNCPY(dst, src, MAX_NAME_SIZE);
85 	_nc_STRCPY(dst + len, "|", NAMEBUFFER_SIZE - len);
86 	src = dst;
87     }
88     return src;
89 }
90 #define ForceBar(dst, src) ((strchr(src, '|') == 0) ? force_bar(dst, src) : src)
91 
92 #if NCURSES_USE_TERMCAP && NCURSES_XNAMES
93 static char *
skip_index(char * name)94 skip_index(char *name)
95 {
96     char *bar = strchr(name, '|');
97 
98     if (bar != 0 && (bar - name) == 2)
99 	name = bar + 1;
100 
101     return name;
102 }
103 #endif
104 
105 static bool
check_collisions(char * n1,char * n2,int counter)106 check_collisions(char *n1, char *n2, int counter)
107 {
108     char *pstart, *qstart, *pend, *qend;
109     char nc1[NAMEBUFFER_SIZE];
110     char nc2[NAMEBUFFER_SIZE];
111 
112     n1 = ForceBar(nc1, n1);
113     n2 = ForceBar(nc2, n2);
114 
115 #if NCURSES_USE_TERMCAP && NCURSES_XNAMES
116     if ((_nc_syntax == SYN_TERMCAP) && _nc_user_definable) {
117 	n1 = skip_index(n1);
118 	n2 = skip_index(n2);
119     }
120 #endif
121 
122     for (pstart = n1; (pend = strchr(pstart, '|')); pstart = pend + 1) {
123 	for (qstart = n2; (qend = strchr(qstart, '|')); qstart = qend + 1) {
124 	    if ((pend - pstart == qend - qstart)
125 		&& memcmp(pstart, qstart, (size_t) (pend - pstart)) == 0) {
126 		if (counter > 0)
127 		    (void) fprintf(stderr, "Name collision '%.*s' between\n",
128 				   (int) (pend - pstart), pstart);
129 		return (TRUE);
130 	    }
131 	}
132     }
133 
134     return (FALSE);
135 }
136 
137 static char *
next_name(char * name)138 next_name(char *name)
139 {
140     if (*name != '\0')
141 	++name;
142     return name;
143 }
144 
145 static char *
name_ending(char * name)146 name_ending(char *name)
147 {
148     if (*name == '\0') {
149 	name = 0;
150     } else {
151 	while (*name != '\0' && *name != '|')
152 	    ++name;
153     }
154     return name;
155 }
156 
157 /*
158  * Essentially, find the conflict reported in check_collisions() and remove
159  * it from the second name, unless that happens to be the last alias.
160  */
161 static bool
remove_collision(char * n1,char * n2)162 remove_collision(char *n1, char *n2)
163 {
164     char *p2 = n2;
165     char *pstart, *qstart, *pend, *qend;
166     bool removed = FALSE;
167 
168 #if NCURSES_USE_TERMCAP && NCURSES_XNAMES
169     if ((_nc_syntax == SYN_TERMCAP) && _nc_user_definable) {
170 	n1 = skip_index(n1);
171 	p2 = n2 = skip_index(n2);
172     }
173 #endif
174 
175     for (pstart = n1; (pend = name_ending(pstart)); pstart = next_name(pend)) {
176 	for (qstart = n2; (qend = name_ending(qstart)); qstart = next_name(qend)) {
177 	    if ((pend - pstart == qend - qstart)
178 		&& memcmp(pstart, qstart, (size_t) (pend - pstart)) == 0) {
179 		if (qstart != p2 || *qend == '|') {
180 		    if (*qend == '|')
181 			++qend;
182 		    while ((*qstart++ = *qend++) != '\0') ;
183 		    fprintf(stderr, "...now\t%s\n", p2);
184 		    removed = TRUE;
185 		} else {
186 		    fprintf(stderr, "Cannot remove alias '%.*s'\n",
187 			    (int) (qend - qstart), qstart);
188 		}
189 		break;
190 	    }
191 	}
192     }
193 
194     return removed;
195 }
196 
197 /* do any of the aliases in a pair of terminal names match? */
198 NCURSES_EXPORT(bool)
_nc_entry_match(char * n1,char * n2)199 _nc_entry_match(char *n1, char *n2)
200 {
201     return check_collisions(n1, n2, 0);
202 }
203 
204 /****************************************************************************
205  *
206  * Entry compiler and resolution logic
207  *
208  ****************************************************************************/
209 
210 NCURSES_EXPORT(void)
_nc_read_entry_source(FILE * fp,char * buf,int literal,bool silent,bool (* hook)(ENTRY *))211 _nc_read_entry_source(FILE *fp, char *buf,
212 		      int literal, bool silent,
213 		      bool(*hook) (ENTRY *))
214 /* slurp all entries in the given file into core */
215 {
216     ENTRY thisentry;
217     bool oldsuppress = _nc_suppress_warnings;
218     int immediate = 0;
219 
220     if (silent)
221 	_nc_suppress_warnings = TRUE;	/* shut the lexer up, too */
222 
223     _nc_reset_input(fp, buf);
224     for (;;) {
225 	memset(&thisentry, 0, sizeof(thisentry));
226 	if (_nc_parse_entry(&thisentry, literal, silent) == ERR)
227 	    break;
228 	if (!isalnum(UChar(thisentry.tterm.term_names[0])))
229 	    _nc_err_abort("terminal names must start with letter or digit");
230 
231 	/*
232 	 * This can be used for immediate compilation of entries with no "use="
233 	 * references to disk.  That avoids consuming a lot of memory when the
234 	 * resolution code could fetch entries off disk.
235 	 */
236 	if (hook != NULLHOOK && (*hook) (&thisentry)) {
237 	    immediate++;
238 	} else {
239 	    enqueue(&thisentry);
240 	    /*
241 	     * The enqueued entry is copied with _nc_copy_termtype(), so we can
242 	     * free some of the data from thisentry, i.e., the arrays.
243 	     */
244 	    FreeIfNeeded(thisentry.tterm.Booleans);
245 	    FreeIfNeeded(thisentry.tterm.Numbers);
246 	    FreeIfNeeded(thisentry.tterm.Strings);
247 #if NCURSES_XNAMES
248 	    FreeIfNeeded(thisentry.tterm.ext_Names);
249 #endif
250 	}
251     }
252 
253     if (_nc_tail) {
254 	/* set up the head pointer */
255 	for (_nc_head = _nc_tail; _nc_head->last; _nc_head = _nc_head->last)
256 	    continue;
257 
258 	DEBUG(1, ("head = %s", _nc_head->tterm.term_names));
259 	DEBUG(1, ("tail = %s", _nc_tail->tterm.term_names));
260     }
261 #ifdef TRACE
262     else if (!immediate)
263 	DEBUG(1, ("no entries parsed"));
264 #endif
265 
266     _nc_suppress_warnings = oldsuppress;
267 }
268 
269 #if NCURSES_XNAMES
270 static unsigned
find_capname(TERMTYPE2 * p,const char * name)271 find_capname(TERMTYPE2 *p, const char *name)
272 {
273     unsigned num_names = NUM_EXT_NAMES(p);
274     unsigned n;
275     if (name != 0) {
276 	for (n = 0; n < num_names; ++n) {
277 	    if (!strcmp(p->ext_Names[n], name))
278 		break;
279 	}
280     } else {
281 	n = num_names + 1;
282     }
283     return n;
284 }
285 
286 static int
extended_captype(TERMTYPE2 * p,unsigned which)287 extended_captype(TERMTYPE2 *p, unsigned which)
288 {
289     int result = UNDEF;
290     unsigned limit = 0;
291     limit += p->ext_Booleans;
292     if (limit != 0 && which < limit) {
293 	result = BOOLEAN;
294     } else {
295 	limit += p->ext_Numbers;
296 	if (limit != 0 && which < limit) {
297 	    result = NUMBER;
298 	} else {
299 	    limit += p->ext_Strings;
300 	    if (limit != 0 && which < limit) {
301 		result = STRING;
302 	    } else if (which >= limit) {
303 		result = CANCEL;
304 	    }
305 	}
306     }
307     return result;
308 }
309 
310 static const char *
name_of_captype(int which)311 name_of_captype(int which)
312 {
313     const char *result = "?";
314     switch (which) {
315     case BOOLEAN:
316 	result = "boolean";
317 	break;
318     case NUMBER:
319 	result = "number";
320 	break;
321     case STRING:
322 	result = "string";
323 	break;
324     }
325     return result;
326 }
327 
328 #define valid_TERMTYPE2(p) \
329 	((p) != 0 && \
330 	 (p)->term_names != 0 && \
331 	 (p)->ext_Names != 0)
332 
333 /*
334  * Disallow changing the type of an extended capability when doing a "use"
335  * if one or the other is a string.
336  */
337 static int
invalid_merge(TERMTYPE2 * to,TERMTYPE2 * from)338 invalid_merge(TERMTYPE2 *to, TERMTYPE2 *from)
339 {
340     int rc = FALSE;
341     if (valid_TERMTYPE2(to)
342 	&& valid_TERMTYPE2(from)) {
343 	char *to_name = _nc_first_name(to->term_names);
344 	char *from_name = strdup(_nc_first_name(from->term_names));
345 	unsigned num_names = NUM_EXT_NAMES(from);
346 	unsigned n;
347 
348 	for (n = 0; n < num_names; ++n) {
349 	    const char *capname = from->ext_Names[n];
350 	    int tt = extended_captype(to, find_capname(to, capname));
351 	    int tf = extended_captype(from, n);
352 
353 	    if (tt <= STRING
354 		&& tf <= STRING
355 		&& (tt == STRING) != (tf == STRING)) {
356 		if (from_name != 0 && strcmp(to_name, from_name)) {
357 		    DEBUG(2,
358 			  ("merge of %s to %s changes type of %s from %s to %s",
359 			   from_name,
360 			   to_name,
361 			   from->ext_Names[n],
362 			   name_of_captype(tf),
363 			   name_of_captype(tt)));
364 		} else {
365 		    DEBUG(2, ("merge of %s changes type of %s from %s to %s",
366 			      to_name,
367 			      from->ext_Names[n],
368 			      name_of_captype(tf),
369 			      name_of_captype(tt)));
370 		}
371 		_nc_warning("merge changes type of %s from %s to %s",
372 			    from->ext_Names[n],
373 			    name_of_captype(tf),
374 			    name_of_captype(tt));
375 		rc = TRUE;
376 	    }
377 	}
378 	free(from_name);
379     }
380     return rc;
381 }
382 #define validate_merge(p, q) \
383 	if (invalid_merge(&((p)->tterm), &((q)->tterm))) \
384 		return FALSE
385 #else
386 #define validate_merge(p, q)	/* nothing */
387 #endif
388 
389 NCURSES_EXPORT(int)
_nc_resolve_uses2(bool fullresolve,bool literal)390 _nc_resolve_uses2(bool fullresolve, bool literal)
391 /* try to resolve all use capabilities */
392 {
393     ENTRY *qp, *rp, *lastread = 0;
394     bool keepgoing;
395     unsigned i;
396     int unresolved, total_unresolved, multiples;
397 
398     DEBUG(2, ("RESOLUTION BEGINNING"));
399 
400     /*
401      * Check for multiple occurrences of the same name.
402      */
403     multiples = 0;
404     for_entry_list(qp) {
405 	int matchcount = 0;
406 
407 	for_entry_list(rp) {
408 	    if (qp > rp
409 		&& check_collisions(qp->tterm.term_names,
410 				    rp->tterm.term_names,
411 				    matchcount + 1)) {
412 		if (!matchcount++) {
413 		    (void) fprintf(stderr, "\t%s\n", rp->tterm.term_names);
414 		}
415 		(void) fprintf(stderr, "and\t%s\n", qp->tterm.term_names);
416 		if (!remove_collision(rp->tterm.term_names,
417 				      qp->tterm.term_names)) {
418 		    ++multiples;
419 		}
420 	    }
421 	}
422     }
423     if (multiples > 0)
424 	return (FALSE);
425 
426     DEBUG(2, ("NO MULTIPLE NAME OCCURRENCES"));
427 
428     /*
429      * First resolution stage: compute link pointers corresponding to names.
430      */
431     total_unresolved = 0;
432     _nc_curr_col = -1;
433     for_entry_list(qp) {
434 	unresolved = 0;
435 	for (i = 0; i < qp->nuses; i++) {
436 	    bool foundit;
437 	    char *child = _nc_first_name(qp->tterm.term_names);
438 	    char *lookfor = qp->uses[i].name;
439 	    long lookline = qp->uses[i].line;
440 
441 	    if (lookfor == 0)
442 		continue;
443 
444 	    foundit = FALSE;
445 
446 	    _nc_set_type(child);
447 
448 	    /* first, try to resolve from in-core records */
449 	    for_entry_list(rp) {
450 		if (rp != qp
451 		    && _nc_name_match(rp->tterm.term_names, lookfor, "|")) {
452 		    DEBUG(2, ("%s: resolving use=%s (in core)",
453 			      child, lookfor));
454 
455 		    qp->uses[i].link = rp;
456 		    foundit = TRUE;
457 		}
458 	    }
459 
460 	    /* if that didn't work, try to merge in a compiled entry */
461 	    if (!foundit) {
462 		TERMTYPE2 thisterm;
463 		char filename[PATH_MAX];
464 
465 		memset(&thisterm, 0, sizeof(thisterm));
466 		if (_nc_read_entry2(lookfor, filename, &thisterm) == 1) {
467 		    DEBUG(2, ("%s: resolving use=%s (compiled)",
468 			      child, lookfor));
469 
470 		    TYPE_MALLOC(ENTRY, 1, rp);
471 		    rp->tterm = thisterm;
472 		    rp->nuses = 0;
473 		    rp->next = lastread;
474 		    lastread = rp;
475 
476 		    qp->uses[i].link = rp;
477 		    foundit = TRUE;
478 		}
479 	    }
480 
481 	    /* no good, mark this one unresolvable and complain */
482 	    if (!foundit) {
483 		unresolved++;
484 		total_unresolved++;
485 
486 		_nc_curr_line = (int) lookline;
487 		_nc_warning("resolution of use=%s failed", lookfor);
488 		qp->uses[i].link = 0;
489 	    }
490 	}
491     }
492     if (total_unresolved) {
493 	/* free entries read in off disk */
494 	_nc_free_entries(lastread);
495 	return (FALSE);
496     }
497 
498     DEBUG(2, ("NAME RESOLUTION COMPLETED OK"));
499 
500     /*
501      * OK, at this point all (char *) references in `name' members
502      * have been successfully converted to (ENTRY *) pointers in
503      * `link' members.  Time to do the actual merges.
504      */
505     if (fullresolve) {
506 	do {
507 	    ENTRY merged;
508 
509 	    keepgoing = FALSE;
510 
511 	    for_entry_list(qp) {
512 		if (qp->nuses > 0) {
513 		    DEBUG(2, ("%s: attempting merge",
514 			      _nc_first_name(qp->tterm.term_names)));
515 		    /*
516 		     * If any of the use entries we're looking for is
517 		     * incomplete, punt.  We'll catch this entry on a
518 		     * subsequent pass.
519 		     */
520 		    for (i = 0; i < qp->nuses; i++)
521 			if (qp->uses[i].link
522 			    && qp->uses[i].link->nuses) {
523 			    DEBUG(2, ("%s: use entry %d unresolved",
524 				      _nc_first_name(qp->tterm.term_names), i));
525 			    goto incomplete;
526 			}
527 
528 		    /*
529 		     * First, make sure there is no garbage in the
530 		     * merge block.  As a side effect, copy into
531 		     * the merged entry the name field and string
532 		     * table pointer.
533 		     */
534 		    _nc_copy_termtype2(&(merged.tterm), &(qp->tterm));
535 
536 		    /*
537 		     * Now merge in each use entry in the proper
538 		     * (reverse) order.
539 		     */
540 		    for (; qp->nuses; qp->nuses--) {
541 			validate_merge(&merged,
542 				       qp->uses[qp->nuses - 1].link);
543 			_nc_merge_entry(&merged,
544 					qp->uses[qp->nuses - 1].link);
545 		    }
546 
547 		    /*
548 		     * Now merge in the original entry.
549 		     */
550 		    validate_merge(&merged, qp);
551 		    _nc_merge_entry(&merged, qp);
552 
553 		    /*
554 		     * Replace the original entry with the merged one.
555 		     */
556 		    FreeIfNeeded(qp->tterm.Booleans);
557 		    FreeIfNeeded(qp->tterm.Numbers);
558 		    FreeIfNeeded(qp->tterm.Strings);
559 #if NCURSES_XNAMES
560 		    FreeIfNeeded(qp->tterm.ext_Names);
561 #endif
562 		    qp->tterm = merged.tterm;
563 		    _nc_wrap_entry(qp, TRUE);
564 
565 		    /*
566 		     * We know every entry is resolvable because name resolution
567 		     * didn't bomb.  So go back for another pass.
568 		     */
569 		    /* FALLTHRU */
570 		  incomplete:
571 		    keepgoing = TRUE;
572 		}
573 	    }
574 	} while
575 	    (keepgoing);
576 
577 	DEBUG(2, ("MERGES COMPLETED OK"));
578     }
579 
580     /*
581      * We'd like to free entries read in off disk at this point, but can't.
582      * The merge_entry() code doesn't copy the strings in the use entries,
583      * it just aliases them.  If this ever changes, do a
584      * free_entries(lastread) here.
585      */
586 
587     DEBUG(2, ("RESOLUTION FINISHED"));
588 
589     if (fullresolve) {
590 	_nc_curr_col = -1;
591 	for_entry_list(qp) {
592 	    _nc_curr_line = (int) qp->startline;
593 	    _nc_set_type(_nc_first_name(qp->tterm.term_names));
594 	    /*
595 	     * tic overrides this function pointer to provide more verbose
596 	     * checking.
597 	     */
598 	    if (_nc_check_termtype2 != sanity_check2) {
599 		SCREEN *save_SP = SP;
600 		SCREEN fake_sp;
601 		TERMINAL fake_tm;
602 		TERMINAL *save_tm = cur_term;
603 
604 		/*
605 		 * Setup so that tic can use ordinary terminfo interface to
606 		 * obtain capability information.
607 		 */
608 		memset(&fake_sp, 0, sizeof(fake_sp));
609 		memset(&fake_tm, 0, sizeof(fake_tm));
610 		fake_sp._term = &fake_tm;
611 		TerminalType(&fake_tm) = qp->tterm;
612 		_nc_set_screen(&fake_sp);
613 		set_curterm(&fake_tm);
614 
615 		_nc_check_termtype2(&qp->tterm, literal);
616 
617 		_nc_set_screen(save_SP);
618 		set_curterm(save_tm);
619 	    } else {
620 		fixup_acsc(&qp->tterm, literal);
621 	    }
622 	}
623 	DEBUG(2, ("SANITY CHECK FINISHED"));
624     }
625 
626     return (TRUE);
627 }
628 
629 /*
630  * This bit of legerdemain turns all the terminfo variable names into
631  * references to locations in the arrays Booleans, Numbers, and Strings ---
632  * precisely what's needed.
633  */
634 
635 #undef CUR
636 #define CUR tp->
637 
638 static void
fixup_acsc(TERMTYPE2 * tp,int literal)639 fixup_acsc(TERMTYPE2 *tp, int literal)
640 {
641     if (!literal) {
642 	if (acs_chars == ABSENT_STRING
643 	    && PRESENT(enter_alt_charset_mode)
644 	    && PRESENT(exit_alt_charset_mode))
645 	    acs_chars = strdup(VT_ACSC);
646     }
647 }
648 
649 static void
sanity_check2(TERMTYPE2 * tp,bool literal)650 sanity_check2(TERMTYPE2 *tp, bool literal)
651 {
652     if (!PRESENT(exit_attribute_mode)) {
653 #ifdef __UNUSED__		/* this casts too wide a net */
654 	bool terminal_entry = !strchr(tp->term_names, '+');
655 	if (terminal_entry &&
656 	    (PRESENT(set_attributes)
657 	     || PRESENT(enter_standout_mode)
658 	     || PRESENT(enter_underline_mode)
659 	     || PRESENT(enter_blink_mode)
660 	     || PRESENT(enter_bold_mode)
661 	     || PRESENT(enter_dim_mode)
662 	     || PRESENT(enter_secure_mode)
663 	     || PRESENT(enter_protected_mode)
664 	     || PRESENT(enter_reverse_mode)))
665 	    _nc_warning("no exit_attribute_mode");
666 #endif /* __UNUSED__ */
667 	PAIRED(enter_standout_mode, exit_standout_mode);
668 	PAIRED(enter_underline_mode, exit_underline_mode);
669 #if defined(enter_italics_mode) && defined(exit_italics_mode)
670 	PAIRED(enter_italics_mode, exit_italics_mode);
671 #endif
672     }
673 
674     /* we do this check/fix in postprocess_termcap(), but some packagers
675      * prefer to bypass it...
676      */
677     if (!literal) {
678 	fixup_acsc(tp, literal);
679 	ANDMISSING(enter_alt_charset_mode, acs_chars);
680 	ANDMISSING(exit_alt_charset_mode, acs_chars);
681     }
682 
683     /* listed in structure-member order of first argument */
684     PAIRED(enter_alt_charset_mode, exit_alt_charset_mode);
685     ANDMISSING(enter_blink_mode, exit_attribute_mode);
686     ANDMISSING(enter_bold_mode, exit_attribute_mode);
687     PAIRED(exit_ca_mode, enter_ca_mode);
688     PAIRED(enter_delete_mode, exit_delete_mode);
689     ANDMISSING(enter_dim_mode, exit_attribute_mode);
690     PAIRED(enter_insert_mode, exit_insert_mode);
691     ANDMISSING(enter_secure_mode, exit_attribute_mode);
692     ANDMISSING(enter_protected_mode, exit_attribute_mode);
693     ANDMISSING(enter_reverse_mode, exit_attribute_mode);
694     PAIRED(from_status_line, to_status_line);
695     PAIRED(meta_off, meta_on);
696 
697     PAIRED(prtr_on, prtr_off);
698     PAIRED(save_cursor, restore_cursor);
699     PAIRED(enter_xon_mode, exit_xon_mode);
700     PAIRED(enter_am_mode, exit_am_mode);
701     ANDMISSING(label_off, label_on);
702 #if defined(display_clock) && defined(remove_clock)
703     PAIRED(display_clock, remove_clock);
704 #endif
705     ANDMISSING(set_color_pair, initialize_pair);
706 }
707 
708 #if NO_LEAKS
709 NCURSES_EXPORT(void)
_nc_leaks_tic(void)710 _nc_leaks_tic(void)
711 {
712     T((T_CALLED("_nc_free_tic()")));
713     _nc_globals.leak_checking = TRUE;
714     _nc_alloc_entry_leaks();
715     _nc_captoinfo_leaks();
716     _nc_comp_scan_leaks();
717 #if BROKEN_LINKER || USE_REENTRANT
718     _nc_names_leaks();
719     _nc_codes_leaks();
720 #endif
721     _nc_tic_expand(0, FALSE, 0);
722 }
723 
724 NCURSES_EXPORT(void)
_nc_free_tic(int code)725 _nc_free_tic(int code)
726 {
727     _nc_leaks_tic();
728     exit_terminfo(code);
729 }
730 #endif
731