xref: /dragonfly/contrib/ncurses/progs/infocmp.c (revision 5868d2b9)
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22  *                                                                          *
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28 
29 /****************************************************************************
30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32  *     and: Thomas E. Dickey                        1996-on                 *
33  ****************************************************************************/
34 
35 /*
36  *	infocmp.c -- decompile an entry, or compare two entries
37  *		written by Eric S. Raymond
38  *		and Thomas E Dickey
39  */
40 
41 #include <progs.priv.h>
42 
43 #include <dump_entry.h>
44 
45 MODULE_ID("$Id: infocmp.c,v 1.105 2010/05/01 22:04:08 tom Exp $")
46 
47 #define L_CURL "{"
48 #define R_CURL "}"
49 
50 #define MAX_STRING	1024	/* maximum formatted string */
51 
52 const char *_nc_progname = "infocmp";
53 
54 typedef char path[PATH_MAX];
55 
56 /***************************************************************************
57  *
58  * The following control variables, together with the contents of the
59  * terminfo entries, completely determine the actions of the program.
60  *
61  ***************************************************************************/
62 
63 static ENTRY *entries;		/* terminfo entries */
64 static int termcount;		/* count of terminal entries */
65 
66 static bool limited = TRUE;	/* "-r" option is not set */
67 static bool quiet = FALSE;
68 static bool literal = FALSE;
69 static const char *bool_sep = ":";
70 static const char *s_absent = "NULL";
71 static const char *s_cancel = "NULL";
72 static const char *tversion;	/* terminfo version selected */
73 static int itrace;		/* trace flag for debugging */
74 static int mwidth = 60;
75 static int numbers = 0;		/* format "%'char'" to/from "%{number}" */
76 static int outform = F_TERMINFO;	/* output format */
77 static int sortmode;		/* sort_mode */
78 
79 /* main comparison mode */
80 static int compare;
81 #define C_DEFAULT	0	/* don't force comparison mode */
82 #define C_DIFFERENCE	1	/* list differences between two terminals */
83 #define C_COMMON	2	/* list common capabilities */
84 #define C_NAND		3	/* list capabilities in neither terminal */
85 #define C_USEALL	4	/* generate relative use-form entry */
86 static bool ignorepads;		/* ignore pad prefixes when diffing */
87 
88 #if NO_LEAKS
89 #undef ExitProgram
90 static void ExitProgram(int code) GCC_NORETURN;
91 /* prototype is to get gcc to accept the noreturn attribute */
92 static void
93 ExitProgram(int code)
94 {
95     while (termcount-- > 0)
96 	_nc_free_termtype(&entries[termcount].tterm);
97     _nc_leaks_dump_entry();
98     free(entries);
99     _nc_free_tic(code);
100 }
101 #endif
102 
103 static char *
104 canonical_name(char *ptr, char *buf)
105 /* extract the terminal type's primary name */
106 {
107     char *bp;
108 
109     (void) strcpy(buf, ptr);
110     if ((bp = strchr(buf, '|')) != 0)
111 	*bp = '\0';
112 
113     return (buf);
114 }
115 
116 /***************************************************************************
117  *
118  * Predicates for dump function
119  *
120  ***************************************************************************/
121 
122 static int
123 capcmp(PredIdx idx, const char *s, const char *t)
124 /* capability comparison function */
125 {
126     if (!VALID_STRING(s) && !VALID_STRING(t))
127 	return (s != t);
128     else if (!VALID_STRING(s) || !VALID_STRING(t))
129 	return (1);
130 
131     if ((idx == acs_chars_index) || !ignorepads)
132 	return (strcmp(s, t));
133     else
134 	return (_nc_capcmp(s, t));
135 }
136 
137 static int
138 use_predicate(unsigned type, PredIdx idx)
139 /* predicate function to use for use decompilation */
140 {
141     ENTRY *ep;
142 
143     switch (type) {
144     case BOOLEAN:
145 	{
146 	    int is_set = FALSE;
147 
148 	    /*
149 	     * This assumes that multiple use entries are supposed
150 	     * to contribute the logical or of their boolean capabilities.
151 	     * This is true if we take the semantics of multiple uses to
152 	     * be 'each capability gets the first non-default value found
153 	     * in the sequence of use entries'.
154 	     *
155 	     * Note that cancelled or absent booleans are stored as FALSE,
156 	     * unlike numbers and strings, whose cancelled/absent state is
157 	     * recorded in the terminfo database.
158 	     */
159 	    for (ep = &entries[1]; ep < entries + termcount; ep++)
160 		if (ep->tterm.Booleans[idx] == TRUE) {
161 		    is_set = entries[0].tterm.Booleans[idx];
162 		    break;
163 		}
164 	    if (is_set != entries[0].tterm.Booleans[idx])
165 		return (!is_set);
166 	    else
167 		return (FAIL);
168 	}
169 
170     case NUMBER:
171 	{
172 	    int value = ABSENT_NUMERIC;
173 
174 	    /*
175 	     * We take the semantics of multiple uses to be 'each
176 	     * capability gets the first non-default value found
177 	     * in the sequence of use entries'.
178 	     */
179 	    for (ep = &entries[1]; ep < entries + termcount; ep++)
180 		if (VALID_NUMERIC(ep->tterm.Numbers[idx])) {
181 		    value = ep->tterm.Numbers[idx];
182 		    break;
183 		}
184 
185 	    if (value != entries[0].tterm.Numbers[idx])
186 		return (value != ABSENT_NUMERIC);
187 	    else
188 		return (FAIL);
189 	}
190 
191     case STRING:
192 	{
193 	    char *termstr, *usestr = ABSENT_STRING;
194 
195 	    termstr = entries[0].tterm.Strings[idx];
196 
197 	    /*
198 	     * We take the semantics of multiple uses to be 'each
199 	     * capability gets the first non-default value found
200 	     * in the sequence of use entries'.
201 	     */
202 	    for (ep = &entries[1]; ep < entries + termcount; ep++)
203 		if (ep->tterm.Strings[idx]) {
204 		    usestr = ep->tterm.Strings[idx];
205 		    break;
206 		}
207 
208 	    if (usestr == ABSENT_STRING && termstr == ABSENT_STRING)
209 		return (FAIL);
210 	    else if (!usestr || !termstr || capcmp(idx, usestr, termstr))
211 		return (TRUE);
212 	    else
213 		return (FAIL);
214 	}
215     }
216 
217     return (FALSE);		/* pacify compiler */
218 }
219 
220 static bool
221 useeq(ENTRY * e1, ENTRY * e2)
222 /* are the use references in two entries equivalent? */
223 {
224     unsigned i, j;
225 
226     if (e1->nuses != e2->nuses)
227 	return (FALSE);
228 
229     /* Ugh...this is quadratic again */
230     for (i = 0; i < e1->nuses; i++) {
231 	bool foundmatch = FALSE;
232 
233 	/* search second entry for given use reference */
234 	for (j = 0; j < e2->nuses; j++)
235 	    if (!strcmp(e1->uses[i].name, e2->uses[j].name)) {
236 		foundmatch = TRUE;
237 		break;
238 	    }
239 
240 	if (!foundmatch)
241 	    return (FALSE);
242     }
243 
244     return (TRUE);
245 }
246 
247 static bool
248 entryeq(TERMTYPE *t1, TERMTYPE *t2)
249 /* are two entries equivalent? */
250 {
251     unsigned i;
252 
253     for (i = 0; i < NUM_BOOLEANS(t1); i++)
254 	if (t1->Booleans[i] != t2->Booleans[i])
255 	    return (FALSE);
256 
257     for (i = 0; i < NUM_NUMBERS(t1); i++)
258 	if (t1->Numbers[i] != t2->Numbers[i])
259 	    return (FALSE);
260 
261     for (i = 0; i < NUM_STRINGS(t1); i++)
262 	if (capcmp((PredIdx) i, t1->Strings[i], t2->Strings[i]))
263 	    return (FALSE);
264 
265     return (TRUE);
266 }
267 
268 #define TIC_EXPAND(result) _nc_tic_expand(result, outform==F_TERMINFO, numbers)
269 
270 static void
271 print_uses(ENTRY * ep, FILE *fp)
272 /* print an entry's use references */
273 {
274     unsigned i;
275 
276     if (!ep->nuses)
277 	fputs("NULL", fp);
278     else
279 	for (i = 0; i < ep->nuses; i++) {
280 	    fputs(ep->uses[i].name, fp);
281 	    if (i < ep->nuses - 1)
282 		fputs(" ", fp);
283 	}
284 }
285 
286 static const char *
287 dump_boolean(int val)
288 /* display the value of a boolean capability */
289 {
290     switch (val) {
291     case ABSENT_BOOLEAN:
292 	return (s_absent);
293     case CANCELLED_BOOLEAN:
294 	return (s_cancel);
295     case FALSE:
296 	return ("F");
297     case TRUE:
298 	return ("T");
299     default:
300 	return ("?");
301     }
302 }
303 
304 static void
305 dump_numeric(int val, char *buf)
306 /* display the value of a boolean capability */
307 {
308     switch (val) {
309     case ABSENT_NUMERIC:
310 	strcpy(buf, s_absent);
311 	break;
312     case CANCELLED_NUMERIC:
313 	strcpy(buf, s_cancel);
314 	break;
315     default:
316 	sprintf(buf, "%d", val);
317 	break;
318     }
319 }
320 
321 static void
322 dump_string(char *val, char *buf)
323 /* display the value of a string capability */
324 {
325     if (val == ABSENT_STRING)
326 	strcpy(buf, s_absent);
327     else if (val == CANCELLED_STRING)
328 	strcpy(buf, s_cancel);
329     else {
330 	sprintf(buf, "'%.*s'", MAX_STRING - 3, TIC_EXPAND(val));
331     }
332 }
333 
334 static void
335 compare_predicate(PredType type, PredIdx idx, const char *name)
336 /* predicate function to use for entry difference reports */
337 {
338     register ENTRY *e1 = &entries[0];
339     register ENTRY *e2 = &entries[1];
340     char buf1[MAX_STRING], buf2[MAX_STRING];
341     int b1, b2;
342     int n1, n2;
343     char *s1, *s2;
344 
345     switch (type) {
346     case CMP_BOOLEAN:
347 	b1 = e1->tterm.Booleans[idx];
348 	b2 = e2->tterm.Booleans[idx];
349 	switch (compare) {
350 	case C_DIFFERENCE:
351 	    if (!(b1 == ABSENT_BOOLEAN && b2 == ABSENT_BOOLEAN) && b1 != b2)
352 		(void) printf("\t%s: %s%s%s.\n",
353 			      name,
354 			      dump_boolean(b1),
355 			      bool_sep,
356 			      dump_boolean(b2));
357 	    break;
358 
359 	case C_COMMON:
360 	    if (b1 == b2 && b1 != ABSENT_BOOLEAN)
361 		(void) printf("\t%s= %s.\n", name, dump_boolean(b1));
362 	    break;
363 
364 	case C_NAND:
365 	    if (b1 == ABSENT_BOOLEAN && b2 == ABSENT_BOOLEAN)
366 		(void) printf("\t!%s.\n", name);
367 	    break;
368 	}
369 	break;
370 
371     case CMP_NUMBER:
372 	n1 = e1->tterm.Numbers[idx];
373 	n2 = e2->tterm.Numbers[idx];
374 	dump_numeric(n1, buf1);
375 	dump_numeric(n2, buf2);
376 	switch (compare) {
377 	case C_DIFFERENCE:
378 	    if (!((n1 == ABSENT_NUMERIC && n2 == ABSENT_NUMERIC)) && n1 != n2)
379 		(void) printf("\t%s: %s, %s.\n", name, buf1, buf2);
380 	    break;
381 
382 	case C_COMMON:
383 	    if (n1 != ABSENT_NUMERIC && n2 != ABSENT_NUMERIC && n1 == n2)
384 		(void) printf("\t%s= %s.\n", name, buf1);
385 	    break;
386 
387 	case C_NAND:
388 	    if (n1 == ABSENT_NUMERIC && n2 == ABSENT_NUMERIC)
389 		(void) printf("\t!%s.\n", name);
390 	    break;
391 	}
392 	break;
393 
394     case CMP_STRING:
395 	s1 = e1->tterm.Strings[idx];
396 	s2 = e2->tterm.Strings[idx];
397 	switch (compare) {
398 	case C_DIFFERENCE:
399 	    if (capcmp(idx, s1, s2)) {
400 		dump_string(s1, buf1);
401 		dump_string(s2, buf2);
402 		if (strcmp(buf1, buf2))
403 		    (void) printf("\t%s: %s, %s.\n", name, buf1, buf2);
404 	    }
405 	    break;
406 
407 	case C_COMMON:
408 	    if (s1 && s2 && !capcmp(idx, s1, s2))
409 		(void) printf("\t%s= '%s'.\n", name, TIC_EXPAND(s1));
410 	    break;
411 
412 	case C_NAND:
413 	    if (!s1 && !s2)
414 		(void) printf("\t!%s.\n", name);
415 	    break;
416 	}
417 	break;
418 
419     case CMP_USE:
420 	/* unlike the other modes, this compares *all* use entries */
421 	switch (compare) {
422 	case C_DIFFERENCE:
423 	    if (!useeq(e1, e2)) {
424 		(void) fputs("\tuse: ", stdout);
425 		print_uses(e1, stdout);
426 		fputs(", ", stdout);
427 		print_uses(e2, stdout);
428 		fputs(".\n", stdout);
429 	    }
430 	    break;
431 
432 	case C_COMMON:
433 	    if (e1->nuses && e2->nuses && useeq(e1, e2)) {
434 		(void) fputs("\tuse: ", stdout);
435 		print_uses(e1, stdout);
436 		fputs(".\n", stdout);
437 	    }
438 	    break;
439 
440 	case C_NAND:
441 	    if (!e1->nuses && !e2->nuses)
442 		(void) printf("\t!use.\n");
443 	    break;
444 	}
445     }
446 }
447 
448 /***************************************************************************
449  *
450  * Init string analysis
451  *
452  ***************************************************************************/
453 
454 typedef struct {
455     const char *from;
456     const char *to;
457 } assoc;
458 
459 static const assoc std_caps[] =
460 {
461     /* these are specified by X.364 and iBCS2 */
462     {"\033c", "RIS"},		/* full reset */
463     {"\0337", "SC"},		/* save cursor */
464     {"\0338", "RC"},		/* restore cursor */
465     {"\033[r", "RSR"},		/* not an X.364 mnemonic */
466     {"\033[m", "SGR0"},		/* not an X.364 mnemonic */
467     {"\033[2J", "ED2"},		/* clear page */
468 
469     /* this group is specified by ISO 2022 */
470     {"\033(0", "ISO DEC G0"},	/* enable DEC graphics for G0 */
471     {"\033(A", "ISO UK G0"},	/* enable UK chars for G0 */
472     {"\033(B", "ISO US G0"},	/* enable US chars for G0 */
473     {"\033)0", "ISO DEC G1"},	/* enable DEC graphics for G1 */
474     {"\033)A", "ISO UK G1"},	/* enable UK chars for G1 */
475     {"\033)B", "ISO US G1"},	/* enable US chars for G1 */
476 
477     /* these are DEC private controls widely supported by emulators */
478     {"\033=", "DECPAM"},	/* application keypad mode */
479     {"\033>", "DECPNM"},	/* normal keypad mode */
480     {"\033<", "DECANSI"},	/* enter ANSI mode */
481     {"\033[!p", "DECSTR"},	/* soft reset */
482     {"\033 F", "S7C1T"},	/* 7-bit controls */
483 
484     {(char *) 0, (char *) 0}
485 };
486 
487 static const assoc std_modes[] =
488 /* ECMA \E[ ... [hl] modes recognized by many emulators */
489 {
490     {"2", "AM"},		/* keyboard action mode */
491     {"4", "IRM"},		/* insert/replace mode */
492     {"12", "SRM"},		/* send/receive mode */
493     {"20", "LNM"},		/* linefeed mode */
494     {(char *) 0, (char *) 0}
495 };
496 
497 static const assoc private_modes[] =
498 /* DEC \E[ ... [hl] modes recognized by many emulators */
499 {
500     {"1", "CKM"},		/* application cursor keys */
501     {"2", "ANM"},		/* set VT52 mode */
502     {"3", "COLM"},		/* 132-column mode */
503     {"4", "SCLM"},		/* smooth scroll */
504     {"5", "SCNM"},		/* reverse video mode */
505     {"6", "OM"},		/* origin mode */
506     {"7", "AWM"},		/* wraparound mode */
507     {"8", "ARM"},		/* auto-repeat mode */
508     {(char *) 0, (char *) 0}
509 };
510 
511 static const assoc ecma_highlights[] =
512 /* recognize ECMA attribute sequences */
513 {
514     {"0", "NORMAL"},		/* normal */
515     {"1", "+BOLD"},		/* bold on */
516     {"2", "+DIM"},		/* dim on */
517     {"3", "+ITALIC"},		/* italic on */
518     {"4", "+UNDERLINE"},	/* underline on */
519     {"5", "+BLINK"},		/* blink on */
520     {"6", "+FASTBLINK"},	/* fastblink on */
521     {"7", "+REVERSE"},		/* reverse on */
522     {"8", "+INVISIBLE"},	/* invisible on */
523     {"9", "+DELETED"},		/* deleted on */
524     {"10", "MAIN-FONT"},	/* select primary font */
525     {"11", "ALT-FONT-1"},	/* select alternate font 1 */
526     {"12", "ALT-FONT-2"},	/* select alternate font 2 */
527     {"13", "ALT-FONT-3"},	/* select alternate font 3 */
528     {"14", "ALT-FONT-4"},	/* select alternate font 4 */
529     {"15", "ALT-FONT-5"},	/* select alternate font 5 */
530     {"16", "ALT-FONT-6"},	/* select alternate font 6 */
531     {"17", "ALT-FONT-7"},	/* select alternate font 7 */
532     {"18", "ALT-FONT-1"},	/* select alternate font 1 */
533     {"19", "ALT-FONT-1"},	/* select alternate font 1 */
534     {"20", "FRAKTUR"},		/* Fraktur font */
535     {"21", "DOUBLEUNDER"},	/* double underline */
536     {"22", "-DIM"},		/* dim off */
537     {"23", "-ITALIC"},		/* italic off */
538     {"24", "-UNDERLINE"},	/* underline off */
539     {"25", "-BLINK"},		/* blink off */
540     {"26", "-FASTBLINK"},	/* fastblink off */
541     {"27", "-REVERSE"},		/* reverse off */
542     {"28", "-INVISIBLE"},	/* invisible off */
543     {"29", "-DELETED"},		/* deleted off */
544     {(char *) 0, (char *) 0}
545 };
546 
547 static int
548 skip_csi(const char *cap)
549 {
550     int result = 0;
551     if (cap[0] == '\033' && cap[1] == '[')
552 	result = 2;
553     else if (UChar(cap[0]) == 0233)
554 	result = 1;
555     return result;
556 }
557 
558 static bool
559 same_param(const char *table, const char *param, unsigned length)
560 {
561     bool result = FALSE;
562     if (strncmp(table, param, length) == 0) {
563 	result = !isdigit(UChar(param[length]));
564     }
565     return result;
566 }
567 
568 static char *
569 lookup_params(const assoc * table, char *dst, char *src)
570 {
571     char *result = 0;
572     const char *ep = strtok(src, ";");
573 
574     if (ep != 0) {
575 	const assoc *ap;
576 
577 	do {
578 	    bool found = FALSE;
579 
580 	    for (ap = table; ap->from; ap++) {
581 		size_t tlen = strlen(ap->from);
582 
583 		if (same_param(ap->from, ep, tlen)) {
584 		    (void) strcat(dst, ap->to);
585 		    found = TRUE;
586 		    break;
587 		}
588 	    }
589 
590 	    if (!found)
591 		(void) strcat(dst, ep);
592 	    (void) strcat(dst, ";");
593 	} while
594 	    ((ep = strtok((char *) 0, ";")));
595 
596 	dst[strlen(dst) - 1] = '\0';
597 
598 	result = dst;
599     }
600     return result;
601 }
602 
603 static void
604 analyze_string(const char *name, const char *cap, TERMTYPE *tp)
605 {
606     char buf2[MAX_TERMINFO_LENGTH];
607     const char *sp;
608     const assoc *ap;
609     int tp_lines = tp->Numbers[2];
610 
611     if (cap == ABSENT_STRING || cap == CANCELLED_STRING)
612 	return;
613     (void) printf("%s: ", name);
614 
615     for (sp = cap; *sp; sp++) {
616 	int i;
617 	int csi;
618 	size_t len = 0;
619 	size_t next;
620 	const char *expansion = 0;
621 	char buf3[MAX_TERMINFO_LENGTH];
622 
623 	/* first, check other capabilities in this entry */
624 	for (i = 0; i < STRCOUNT; i++) {
625 	    char *cp = tp->Strings[i];
626 
627 	    /* don't use soft-key capabilities */
628 	    if (strnames[i][0] == 'k' && strnames[i][0] == 'f')
629 		continue;
630 
631 	    if (cp != ABSENT_STRING && cp != CANCELLED_STRING && cp[0] && cp
632 		!= cap) {
633 		len = strlen(cp);
634 		(void) strncpy(buf2, sp, len);
635 		buf2[len] = '\0';
636 
637 		if (_nc_capcmp(cp, buf2))
638 		    continue;
639 
640 #define ISRS(s)	(!strncmp((s), "is", 2) || !strncmp((s), "rs", 2))
641 		/*
642 		 * Theoretically we just passed the test for translation
643 		 * (equality once the padding is stripped).  However, there
644 		 * are a few more hoops that need to be jumped so that
645 		 * identical pairs of initialization and reset strings
646 		 * don't just refer to each other.
647 		 */
648 		if (ISRS(name) || ISRS(strnames[i]))
649 		    if (cap < cp)
650 			continue;
651 #undef ISRS
652 
653 		expansion = strnames[i];
654 		break;
655 	    }
656 	}
657 
658 	/* now check the standard capabilities */
659 	if (!expansion) {
660 	    csi = skip_csi(sp);
661 	    for (ap = std_caps; ap->from; ap++) {
662 		size_t adj = (size_t) (csi ? 2 : 0);
663 
664 		len = strlen(ap->from);
665 		if (csi && skip_csi(ap->from) != csi)
666 		    continue;
667 		if (len > adj
668 		    && strncmp(ap->from + adj, sp + csi, len - adj) == 0) {
669 		    expansion = ap->to;
670 		    len -= adj;
671 		    len += (size_t) csi;
672 		    break;
673 		}
674 	    }
675 	}
676 
677 	/* now check for standard-mode sequences */
678 	if (!expansion
679 	    && (csi = skip_csi(sp)) != 0
680 	    && (len = strspn(sp + csi, "0123456789;"))
681 	    && (len < sizeof(buf3))
682 	    && (next = (size_t) csi + len)
683 	    && ((sp[next] == 'h') || (sp[next] == 'l'))) {
684 
685 	    (void) strcpy(buf2, (sp[next] == 'h') ? "ECMA+" : "ECMA-");
686 	    (void) strncpy(buf3, sp + csi, len);
687 	    buf3[len] = '\0';
688 	    len += (size_t) csi + 1;
689 
690 	    expansion = lookup_params(std_modes, buf2, buf3);
691 	}
692 
693 	/* now check for private-mode sequences */
694 	if (!expansion
695 	    && (csi = skip_csi(sp)) != 0
696 	    && sp[csi] == '?'
697 	    && (len = strspn(sp + csi + 1, "0123456789;"))
698 	    && (len < sizeof(buf3))
699 	    && (next = (size_t) csi + 1 + len)
700 	    && ((sp[next] == 'h') || (sp[next] == 'l'))) {
701 
702 	    (void) strcpy(buf2, (sp[next] == 'h') ? "DEC+" : "DEC-");
703 	    (void) strncpy(buf3, sp + csi + 1, len);
704 	    buf3[len] = '\0';
705 	    len += (size_t) csi + 2;
706 
707 	    expansion = lookup_params(private_modes, buf2, buf3);
708 	}
709 
710 	/* now check for ECMA highlight sequences */
711 	if (!expansion
712 	    && (csi = skip_csi(sp)) != 0
713 	    && (len = strspn(sp + csi, "0123456789;")) != 0
714 	    && (len < sizeof(buf3))
715 	    && (next = (size_t) csi + len)
716 	    && sp[next] == 'm') {
717 
718 	    (void) strcpy(buf2, "SGR:");
719 	    (void) strncpy(buf3, sp + csi, len);
720 	    buf3[len] = '\0';
721 	    len += (size_t) csi + 1;
722 
723 	    expansion = lookup_params(ecma_highlights, buf2, buf3);
724 	}
725 
726 	if (!expansion
727 	    && (csi = skip_csi(sp)) != 0
728 	    && sp[csi] == 'm') {
729 	    len = (size_t) csi + 1;
730 	    (void) strcpy(buf2, "SGR:");
731 	    strcat(buf2, ecma_highlights[0].to);
732 	    expansion = buf2;
733 	}
734 
735 	/* now check for scroll region reset */
736 	if (!expansion
737 	    && (csi = skip_csi(sp)) != 0) {
738 	    if (sp[csi] == 'r') {
739 		expansion = "RSR";
740 		len = 1;
741 	    } else {
742 		(void) sprintf(buf2, "1;%dr", tp_lines);
743 		len = strlen(buf2);
744 		if (strncmp(buf2, sp + csi, len) == 0)
745 		    expansion = "RSR";
746 	    }
747 	    len += (size_t) csi;
748 	}
749 
750 	/* now check for home-down */
751 	if (!expansion
752 	    && (csi = skip_csi(sp)) != 0) {
753 	    (void) sprintf(buf2, "%d;1H", tp_lines);
754 	    len = strlen(buf2);
755 	    if (strncmp(buf2, sp + csi, len) == 0) {
756 		expansion = "LL";
757 	    } else {
758 		(void) sprintf(buf2, "%dH", tp_lines);
759 		len = strlen(buf2);
760 		if (strncmp(buf2, sp + csi, len) == 0) {
761 		    expansion = "LL";
762 		}
763 	    }
764 	    len += (size_t) csi;
765 	}
766 
767 	/* now look at the expansion we got, if any */
768 	if (expansion) {
769 	    printf("{%s}", expansion);
770 	    sp += len - 1;
771 	} else {
772 	    /* couldn't match anything */
773 	    buf2[0] = *sp;
774 	    buf2[1] = '\0';
775 	    fputs(TIC_EXPAND(buf2), stdout);
776 	}
777     }
778     putchar('\n');
779 }
780 
781 /***************************************************************************
782  *
783  * File comparison
784  *
785  ***************************************************************************/
786 
787 static void
788 file_comparison(int argc, char *argv[])
789 {
790 #define MAXCOMPARE	2
791     /* someday we may allow comparisons on more files */
792     int filecount = 0;
793     ENTRY *heads[MAXCOMPARE];
794     ENTRY *qp, *rp;
795     int i, n;
796 
797     memset(heads, 0, sizeof(heads));
798     dump_init((char *) 0, F_LITERAL, S_TERMINFO, 0, itrace, FALSE);
799 
800     for (n = 0; n < argc && n < MAXCOMPARE; n++) {
801 	if (freopen(argv[n], "r", stdin) == 0)
802 	    _nc_err_abort("Can't open %s", argv[n]);
803 
804 	_nc_head = _nc_tail = 0;
805 
806 	/* parse entries out of the source file */
807 	_nc_set_source(argv[n]);
808 	_nc_read_entry_source(stdin, NULL, TRUE, literal, NULLHOOK);
809 
810 	if (itrace)
811 	    (void) fprintf(stderr, "Resolving file %d...\n", n - 0);
812 
813 	/* maybe do use resolution */
814 	if (!_nc_resolve_uses2(!limited, literal)) {
815 	    (void) fprintf(stderr,
816 			   "There are unresolved use entries in %s:\n",
817 			   argv[n]);
818 	    for_entry_list(qp) {
819 		if (qp->nuses) {
820 		    (void) fputs(qp->tterm.term_names, stderr);
821 		    (void) fputc('\n', stderr);
822 		}
823 	    }
824 	    ExitProgram(EXIT_FAILURE);
825 	}
826 
827 	heads[filecount] = _nc_head;
828 	filecount++;
829     }
830 
831     /* OK, all entries are in core.  Ready to do the comparison */
832     if (itrace)
833 	(void) fprintf(stderr, "Entries are now in core...\n");
834 
835     /* The entry-matching loop. Sigh, this is intrinsically quadratic. */
836     for (qp = heads[0]; qp; qp = qp->next) {
837 	for (rp = heads[1]; rp; rp = rp->next)
838 	    if (_nc_entry_match(qp->tterm.term_names, rp->tterm.term_names)) {
839 		if (qp->ncrosslinks < MAX_CROSSLINKS)
840 		    qp->crosslinks[qp->ncrosslinks] = rp;
841 		qp->ncrosslinks++;
842 
843 		if (rp->ncrosslinks < MAX_CROSSLINKS)
844 		    rp->crosslinks[rp->ncrosslinks] = qp;
845 		rp->ncrosslinks++;
846 	    }
847     }
848 
849     /* now we have two circular lists with crosslinks */
850     if (itrace)
851 	(void) fprintf(stderr, "Name matches are done...\n");
852 
853     for (qp = heads[0]; qp; qp = qp->next) {
854 	if (qp->ncrosslinks > 1) {
855 	    (void) fprintf(stderr,
856 			   "%s in file 1 (%s) has %d matches in file 2 (%s):\n",
857 			   _nc_first_name(qp->tterm.term_names),
858 			   argv[0],
859 			   qp->ncrosslinks,
860 			   argv[1]);
861 	    for (i = 0; i < qp->ncrosslinks; i++)
862 		(void) fprintf(stderr,
863 			       "\t%s\n",
864 			       _nc_first_name((qp->crosslinks[i])->tterm.term_names));
865 	}
866     }
867 
868     for (rp = heads[1]; rp; rp = rp->next) {
869 	if (rp->ncrosslinks > 1) {
870 	    (void) fprintf(stderr,
871 			   "%s in file 2 (%s) has %d matches in file 1 (%s):\n",
872 			   _nc_first_name(rp->tterm.term_names),
873 			   argv[1],
874 			   rp->ncrosslinks,
875 			   argv[0]);
876 	    for (i = 0; i < rp->ncrosslinks; i++)
877 		(void) fprintf(stderr,
878 			       "\t%s\n",
879 			       _nc_first_name((rp->crosslinks[i])->tterm.term_names));
880 	}
881     }
882 
883     (void) printf("In file 1 (%s) only:\n", argv[0]);
884     for (qp = heads[0]; qp; qp = qp->next)
885 	if (qp->ncrosslinks == 0)
886 	    (void) printf("\t%s\n",
887 			  _nc_first_name(qp->tterm.term_names));
888 
889     (void) printf("In file 2 (%s) only:\n", argv[1]);
890     for (rp = heads[1]; rp; rp = rp->next)
891 	if (rp->ncrosslinks == 0)
892 	    (void) printf("\t%s\n",
893 			  _nc_first_name(rp->tterm.term_names));
894 
895     (void) printf("The following entries are equivalent:\n");
896     for (qp = heads[0]; qp; qp = qp->next) {
897 	if (qp->ncrosslinks == 1) {
898 	    rp = qp->crosslinks[0];
899 
900 	    repair_acsc(&qp->tterm);
901 	    repair_acsc(&rp->tterm);
902 #if NCURSES_XNAMES
903 	    _nc_align_termtype(&qp->tterm, &rp->tterm);
904 #endif
905 	    if (entryeq(&qp->tterm, &rp->tterm) && useeq(qp, rp)) {
906 		char name1[NAMESIZE], name2[NAMESIZE];
907 
908 		(void) canonical_name(qp->tterm.term_names, name1);
909 		(void) canonical_name(rp->tterm.term_names, name2);
910 
911 		(void) printf("%s = %s\n", name1, name2);
912 	    }
913 	}
914     }
915 
916     (void) printf("Differing entries:\n");
917     termcount = 2;
918     for (qp = heads[0]; qp; qp = qp->next) {
919 
920 	if (qp->ncrosslinks == 1) {
921 	    rp = qp->crosslinks[0];
922 #if NCURSES_XNAMES
923 	    /* sorry - we have to do this on each pass */
924 	    _nc_align_termtype(&qp->tterm, &rp->tterm);
925 #endif
926 	    if (!(entryeq(&qp->tterm, &rp->tterm) && useeq(qp, rp))) {
927 		char name1[NAMESIZE], name2[NAMESIZE];
928 
929 		entries[0] = *qp;
930 		entries[1] = *rp;
931 
932 		(void) canonical_name(qp->tterm.term_names, name1);
933 		(void) canonical_name(rp->tterm.term_names, name2);
934 
935 		switch (compare) {
936 		case C_DIFFERENCE:
937 		    if (itrace)
938 			(void) fprintf(stderr,
939 				       "%s: dumping differences\n",
940 				       _nc_progname);
941 		    (void) printf("comparing %s to %s.\n", name1, name2);
942 		    compare_entry(compare_predicate, &entries->tterm, quiet);
943 		    break;
944 
945 		case C_COMMON:
946 		    if (itrace)
947 			(void) fprintf(stderr,
948 				       "%s: dumping common capabilities\n",
949 				       _nc_progname);
950 		    (void) printf("comparing %s to %s.\n", name1, name2);
951 		    compare_entry(compare_predicate, &entries->tterm, quiet);
952 		    break;
953 
954 		case C_NAND:
955 		    if (itrace)
956 			(void) fprintf(stderr,
957 				       "%s: dumping differences\n",
958 				       _nc_progname);
959 		    (void) printf("comparing %s to %s.\n", name1, name2);
960 		    compare_entry(compare_predicate, &entries->tterm, quiet);
961 		    break;
962 
963 		}
964 	    }
965 	}
966     }
967 }
968 
969 static void
970 usage(void)
971 {
972     static const char *tbl[] =
973     {
974 	"Usage: infocmp [options] [-A directory] [-B directory] [termname...]"
975 	,""
976 	,"Options:"
977 	,"  -1    print single-column"
978 	,"  -C    use termcap-names"
979 	,"  -F    compare terminfo-files"
980 	,"  -I    use terminfo-names"
981 	,"  -L    use long names"
982 	,"  -R subset (see manpage)"
983 	,"  -T    eliminate size limits (test)"
984 	,"  -U    eliminate post-processing of entries"
985 	,"  -V    print version"
986 #if NCURSES_XNAMES
987 	,"  -a    with -F, list commented-out caps"
988 #endif
989 	,"  -c    list common capabilities"
990 	,"  -d    list different capabilities"
991 	,"  -e    format output for C initializer"
992 	,"  -E    format output as C tables"
993 	,"  -f    with -1, format complex strings"
994 	,"  -G    format %{number} to %'char'"
995 	,"  -g    format %'char' to %{number}"
996 	,"  -i    analyze initialization/reset"
997 	,"  -l    output terminfo names"
998 	,"  -n    list capabilities in neither"
999 	,"  -p    ignore padding specifiers"
1000 	,"  -q    brief listing, removes headers"
1001 	,"  -r    with -C, output in termcap form"
1002 	,"  -r    with -F, resolve use-references"
1003 	,"  -s [d|i|l|c] sort fields"
1004 #if NCURSES_XNAMES
1005 	,"  -t    suppress commented-out capabilities"
1006 #endif
1007 	,"  -u    produce source with 'use='"
1008 	,"  -v number  (verbose)"
1009 	,"  -w number  (width)"
1010 #if NCURSES_XNAMES
1011 	,"  -x    treat unknown capabilities as user-defined"
1012 #endif
1013     };
1014     const size_t first = 3;
1015     const size_t last = SIZEOF(tbl);
1016     const size_t left = (last - first + 1) / 2 + first;
1017     size_t n;
1018 
1019     for (n = 0; n < left; n++) {
1020 	size_t m = (n < first) ? last : n + left - first;
1021 	if (m < last)
1022 	    fprintf(stderr, "%-40.40s%s\n", tbl[n], tbl[m]);
1023 	else
1024 	    fprintf(stderr, "%s\n", tbl[n]);
1025     }
1026     ExitProgram(EXIT_FAILURE);
1027 }
1028 
1029 static char *
1030 any_initializer(const char *fmt, const char *type)
1031 {
1032     static char *initializer;
1033     char *s;
1034 
1035     if (initializer == 0)
1036 	initializer = (char *) malloc(strlen(entries->tterm.term_names) +
1037 				      strlen(type) + strlen(fmt));
1038 
1039     (void) strcpy(initializer, entries->tterm.term_names);
1040     for (s = initializer; *s != 0 && *s != '|'; s++) {
1041 	if (!isalnum(UChar(*s)))
1042 	    *s = '_';
1043     }
1044     *s = 0;
1045     (void) sprintf(s, fmt, type);
1046     return initializer;
1047 }
1048 
1049 static char *
1050 name_initializer(const char *type)
1051 {
1052     return any_initializer("_%s_data", type);
1053 }
1054 
1055 static char *
1056 string_variable(const char *type)
1057 {
1058     return any_initializer("_s_%s", type);
1059 }
1060 
1061 /* dump C initializers for the terminal type */
1062 static void
1063 dump_initializers(TERMTYPE *term)
1064 {
1065     unsigned n;
1066     const char *str = 0;
1067 
1068     printf("\nstatic char %s[] = \"%s\";\n\n",
1069 	   name_initializer("alias"), entries->tterm.term_names);
1070 
1071     for_each_string(n, term) {
1072 	char buf[MAX_STRING], *sp, *tp;
1073 
1074 	if (VALID_STRING(term->Strings[n])) {
1075 	    tp = buf;
1076 	    *tp++ = '"';
1077 	    for (sp = term->Strings[n];
1078 		 *sp != 0 && (tp - buf) < MAX_STRING - 6;
1079 		 sp++) {
1080 		if (isascii(UChar(*sp))
1081 		    && isprint(UChar(*sp))
1082 		    && *sp != '\\'
1083 		    && *sp != '"')
1084 		    *tp++ = *sp;
1085 		else {
1086 		    (void) sprintf(tp, "\\%03o", UChar(*sp));
1087 		    tp += 4;
1088 		}
1089 	    }
1090 	    *tp++ = '"';
1091 	    *tp = '\0';
1092 	    (void) printf("static char %-20s[] = %s;\n",
1093 			  string_variable(ExtStrname(term, n, strnames)), buf);
1094 	}
1095     }
1096     printf("\n");
1097 
1098     (void) printf("static char %s[] = %s\n", name_initializer("bool"), L_CURL);
1099 
1100     for_each_boolean(n, term) {
1101 	switch ((int) (term->Booleans[n])) {
1102 	case TRUE:
1103 	    str = "TRUE";
1104 	    break;
1105 
1106 	case FALSE:
1107 	    str = "FALSE";
1108 	    break;
1109 
1110 	case ABSENT_BOOLEAN:
1111 	    str = "ABSENT_BOOLEAN";
1112 	    break;
1113 
1114 	case CANCELLED_BOOLEAN:
1115 	    str = "CANCELLED_BOOLEAN";
1116 	    break;
1117 	}
1118 	(void) printf("\t/* %3u: %-8s */\t%s,\n",
1119 		      n, ExtBoolname(term, n, boolnames), str);
1120     }
1121     (void) printf("%s;\n", R_CURL);
1122 
1123     (void) printf("static short %s[] = %s\n", name_initializer("number"), L_CURL);
1124 
1125     for_each_number(n, term) {
1126 	char buf[BUFSIZ];
1127 	switch (term->Numbers[n]) {
1128 	case ABSENT_NUMERIC:
1129 	    str = "ABSENT_NUMERIC";
1130 	    break;
1131 	case CANCELLED_NUMERIC:
1132 	    str = "CANCELLED_NUMERIC";
1133 	    break;
1134 	default:
1135 	    sprintf(buf, "%d", term->Numbers[n]);
1136 	    str = buf;
1137 	    break;
1138 	}
1139 	(void) printf("\t/* %3u: %-8s */\t%s,\n", n,
1140 		      ExtNumname(term, n, numnames), str);
1141     }
1142     (void) printf("%s;\n", R_CURL);
1143 
1144     (void) printf("static char * %s[] = %s\n", name_initializer("string"), L_CURL);
1145 
1146     for_each_string(n, term) {
1147 
1148 	if (term->Strings[n] == ABSENT_STRING)
1149 	    str = "ABSENT_STRING";
1150 	else if (term->Strings[n] == CANCELLED_STRING)
1151 	    str = "CANCELLED_STRING";
1152 	else {
1153 	    str = string_variable(ExtStrname(term, n, strnames));
1154 	}
1155 	(void) printf("\t/* %3u: %-8s */\t%s,\n", n,
1156 		      ExtStrname(term, n, strnames), str);
1157     }
1158     (void) printf("%s;\n", R_CURL);
1159 
1160 #if NCURSES_XNAMES
1161     if ((NUM_BOOLEANS(term) != BOOLCOUNT)
1162 	|| (NUM_NUMBERS(term) != NUMCOUNT)
1163 	|| (NUM_STRINGS(term) != STRCOUNT)) {
1164 	(void) printf("static char * %s[] = %s\n",
1165 		      name_initializer("string_ext"), L_CURL);
1166 	for (n = BOOLCOUNT; n < NUM_BOOLEANS(term); ++n) {
1167 	    (void) printf("\t/* %3u: bool */\t\"%s\",\n",
1168 			  n, ExtBoolname(term, n, boolnames));
1169 	}
1170 	for (n = NUMCOUNT; n < NUM_NUMBERS(term); ++n) {
1171 	    (void) printf("\t/* %3u: num */\t\"%s\",\n",
1172 			  n, ExtNumname(term, n, numnames));
1173 	}
1174 	for (n = STRCOUNT; n < NUM_STRINGS(term); ++n) {
1175 	    (void) printf("\t/* %3u: str */\t\"%s\",\n",
1176 			  n, ExtStrname(term, n, strnames));
1177 	}
1178 	(void) printf("%s;\n", R_CURL);
1179     }
1180 #endif
1181 }
1182 
1183 /* dump C initializers for the terminal type */
1184 static void
1185 dump_termtype(TERMTYPE *term)
1186 {
1187     (void) printf("\t%s\n\t\t%s,\n", L_CURL, name_initializer("alias"));
1188     (void) printf("\t\t(char *)0,\t/* pointer to string table */\n");
1189 
1190     (void) printf("\t\t%s,\n", name_initializer("bool"));
1191     (void) printf("\t\t%s,\n", name_initializer("number"));
1192 
1193     (void) printf("\t\t%s,\n", name_initializer("string"));
1194 
1195 #if NCURSES_XNAMES
1196     (void) printf("#if NCURSES_XNAMES\n");
1197     (void) printf("\t\t(char *)0,\t/* pointer to extended string table */\n");
1198     (void) printf("\t\t%s,\t/* ...corresponding names */\n",
1199 		  ((NUM_BOOLEANS(term) != BOOLCOUNT)
1200 		   || (NUM_NUMBERS(term) != NUMCOUNT)
1201 		   || (NUM_STRINGS(term) != STRCOUNT))
1202 		  ? name_initializer("string_ext")
1203 		  : "(char **)0");
1204 
1205     (void) printf("\t\t%d,\t\t/* count total Booleans */\n", NUM_BOOLEANS(term));
1206     (void) printf("\t\t%d,\t\t/* count total Numbers */\n", NUM_NUMBERS(term));
1207     (void) printf("\t\t%d,\t\t/* count total Strings */\n", NUM_STRINGS(term));
1208 
1209     (void) printf("\t\t%d,\t\t/* count extensions to Booleans */\n",
1210 		  NUM_BOOLEANS(term) - BOOLCOUNT);
1211     (void) printf("\t\t%d,\t\t/* count extensions to Numbers */\n",
1212 		  NUM_NUMBERS(term) - NUMCOUNT);
1213     (void) printf("\t\t%d,\t\t/* count extensions to Strings */\n",
1214 		  NUM_STRINGS(term) - STRCOUNT);
1215 
1216     (void) printf("#endif /* NCURSES_XNAMES */\n");
1217 #else
1218     (void) term;
1219 #endif /* NCURSES_XNAMES */
1220     (void) printf("\t%s\n", R_CURL);
1221 }
1222 
1223 static int
1224 optarg_to_number(void)
1225 {
1226     char *temp = 0;
1227     long value = strtol(optarg, &temp, 0);
1228 
1229     if (temp == 0 || temp == optarg || *temp != 0) {
1230 	fprintf(stderr, "Expected a number, not \"%s\"\n", optarg);
1231 	ExitProgram(EXIT_FAILURE);
1232     }
1233     return (int) value;
1234 }
1235 
1236 static char *
1237 terminal_env(void)
1238 {
1239     char *terminal;
1240 
1241     if ((terminal = getenv("TERM")) == 0) {
1242 	(void) fprintf(stderr,
1243 		       "%s: environment variable TERM not set\n",
1244 		       _nc_progname);
1245 	exit(EXIT_FAILURE);
1246     }
1247     return terminal;
1248 }
1249 
1250 /***************************************************************************
1251  *
1252  * Main sequence
1253  *
1254  ***************************************************************************/
1255 
1256 #if NO_LEAKS
1257 #define MAIN_LEAKS() \
1258     free(myargv); \
1259     free(tfile); \
1260     free(tname)
1261 #else
1262 #define MAIN_LEAKS()		/* nothing */
1263 #endif
1264 
1265 int
1266 main(int argc, char *argv[])
1267 {
1268     /* Avoid "local data >32k" error with mwcc */
1269     /* Also avoid overflowing smaller stacks on systems like AmigaOS */
1270     path *tfile = 0;
1271     char **tname = 0;
1272     int maxterms;
1273 
1274     char **myargv;
1275 
1276     char *firstdir, *restdir;
1277     int c, i, len;
1278     bool formatted = FALSE;
1279     bool filecompare = FALSE;
1280     int initdump = 0;
1281     bool init_analyze = FALSE;
1282     bool suppress_untranslatable = FALSE;
1283 
1284     /* where is the terminfo database location going to default to? */
1285     restdir = firstdir = 0;
1286 
1287 #if NCURSES_XNAMES
1288     use_extended_names(FALSE);
1289 #endif
1290 
1291     _nc_progname = _nc_rootname(argv[0]);
1292 
1293     /* make sure we have enough space to add two terminal entries */
1294     myargv = typeCalloc(char *, (size_t) (argc + 3));
1295     memcpy(myargv, argv, (sizeof(char *) * (size_t) argc));
1296     argv = myargv;
1297 
1298     while ((c = getopt(argc,
1299 		       argv,
1300 		       "1A:aB:CcdEeFfGgIiLlnpqR:rs:TtUuVv:w:x")) != -1) {
1301 	switch (c) {
1302 	case '1':
1303 	    mwidth = 0;
1304 	    break;
1305 
1306 	case 'A':
1307 	    firstdir = optarg;
1308 	    break;
1309 
1310 #if NCURSES_XNAMES
1311 	case 'a':
1312 	    _nc_disable_period = TRUE;
1313 	    use_extended_names(TRUE);
1314 	    break;
1315 #endif
1316 	case 'B':
1317 	    restdir = optarg;
1318 	    break;
1319 
1320 	case 'C':
1321 	    outform = F_TERMCAP;
1322 	    tversion = "BSD";
1323 	    if (sortmode == S_DEFAULT)
1324 		sortmode = S_TERMCAP;
1325 	    break;
1326 
1327 	case 'c':
1328 	    compare = C_COMMON;
1329 	    break;
1330 
1331 	case 'd':
1332 	    compare = C_DIFFERENCE;
1333 	    break;
1334 
1335 	case 'E':
1336 	    initdump |= 2;
1337 	    break;
1338 
1339 	case 'e':
1340 	    initdump |= 1;
1341 	    break;
1342 
1343 	case 'F':
1344 	    filecompare = TRUE;
1345 	    break;
1346 
1347 	case 'f':
1348 	    formatted = TRUE;
1349 	    break;
1350 
1351 	case 'G':
1352 	    numbers = 1;
1353 	    break;
1354 
1355 	case 'g':
1356 	    numbers = -1;
1357 	    break;
1358 
1359 	case 'I':
1360 	    outform = F_TERMINFO;
1361 	    if (sortmode == S_DEFAULT)
1362 		sortmode = S_VARIABLE;
1363 	    tversion = 0;
1364 	    break;
1365 
1366 	case 'i':
1367 	    init_analyze = TRUE;
1368 	    break;
1369 
1370 	case 'L':
1371 	    outform = F_VARIABLE;
1372 	    if (sortmode == S_DEFAULT)
1373 		sortmode = S_VARIABLE;
1374 	    break;
1375 
1376 	case 'l':
1377 	    outform = F_TERMINFO;
1378 	    break;
1379 
1380 	case 'n':
1381 	    compare = C_NAND;
1382 	    break;
1383 
1384 	case 'p':
1385 	    ignorepads = TRUE;
1386 	    break;
1387 
1388 	case 'q':
1389 	    quiet = TRUE;
1390 	    s_absent = "-";
1391 	    s_cancel = "@";
1392 	    bool_sep = ", ";
1393 	    break;
1394 
1395 	case 'R':
1396 	    tversion = optarg;
1397 	    break;
1398 
1399 	case 'r':
1400 	    tversion = 0;
1401 	    break;
1402 
1403 	case 's':
1404 	    if (*optarg == 'd')
1405 		sortmode = S_NOSORT;
1406 	    else if (*optarg == 'i')
1407 		sortmode = S_TERMINFO;
1408 	    else if (*optarg == 'l')
1409 		sortmode = S_VARIABLE;
1410 	    else if (*optarg == 'c')
1411 		sortmode = S_TERMCAP;
1412 	    else {
1413 		(void) fprintf(stderr,
1414 			       "%s: unknown sort mode\n",
1415 			       _nc_progname);
1416 		ExitProgram(EXIT_FAILURE);
1417 	    }
1418 	    break;
1419 
1420 	case 'T':
1421 	    limited = FALSE;
1422 	    break;
1423 
1424 #if NCURSES_XNAMES
1425 	case 't':
1426 	    _nc_disable_period = FALSE;
1427 	    suppress_untranslatable = TRUE;
1428 	    break;
1429 #endif
1430 
1431 	case 'U':
1432 	    literal = TRUE;
1433 	    break;
1434 
1435 	case 'u':
1436 	    compare = C_USEALL;
1437 	    break;
1438 
1439 	case 'V':
1440 	    puts(curses_version());
1441 	    ExitProgram(EXIT_SUCCESS);
1442 
1443 	case 'v':
1444 	    itrace = optarg_to_number();
1445 	    set_trace_level(itrace);
1446 	    break;
1447 
1448 	case 'w':
1449 	    mwidth = optarg_to_number();
1450 	    break;
1451 
1452 #if NCURSES_XNAMES
1453 	case 'x':
1454 	    use_extended_names(TRUE);
1455 	    break;
1456 #endif
1457 
1458 	default:
1459 	    usage();
1460 	}
1461     }
1462 
1463     maxterms = (argc + 2 - optind);
1464     tfile = typeMalloc(path, maxterms);
1465     tname = typeCalloc(char *, maxterms);
1466     entries = typeCalloc(ENTRY, maxterms);
1467 
1468     if (tfile == 0
1469 	|| tname == 0
1470 	|| entries == 0) {
1471 	fprintf(stderr, "%s: not enough memory\n", _nc_progname);
1472 	ExitProgram(EXIT_FAILURE);
1473     }
1474 
1475     /* by default, sort by terminfo name */
1476     if (sortmode == S_DEFAULT)
1477 	sortmode = S_TERMINFO;
1478 
1479     /* set up for display */
1480     dump_init(tversion, outform, sortmode, mwidth, itrace, formatted);
1481 
1482     /* make sure we have at least one terminal name to work with */
1483     if (optind >= argc)
1484 	argv[argc++] = terminal_env();
1485 
1486     /* if user is after a comparison, make sure we have two entries */
1487     if (compare != C_DEFAULT && optind >= argc - 1)
1488 	argv[argc++] = terminal_env();
1489 
1490     /* exactly two terminal names with no options means do -d */
1491     if (argc - optind == 2 && compare == C_DEFAULT)
1492 	compare = C_DIFFERENCE;
1493 
1494     if (!filecompare) {
1495 	/* grab the entries */
1496 	termcount = 0;
1497 	for (; optind < argc; optind++) {
1498 	    const char *directory = termcount ? restdir : firstdir;
1499 	    int status;
1500 
1501 	    tname[termcount] = argv[optind];
1502 
1503 	    if (directory) {
1504 #if USE_DATABASE
1505 #if MIXEDCASE_FILENAMES
1506 #define LEAF_FMT "%c"
1507 #else
1508 #define LEAF_FMT "%02x"
1509 #endif
1510 		(void) sprintf(tfile[termcount], "%s/" LEAF_FMT "/%s",
1511 			       directory,
1512 			       UChar(*argv[optind]), argv[optind]);
1513 		if (itrace)
1514 		    (void) fprintf(stderr,
1515 				   "%s: reading entry %s from file %s\n",
1516 				   _nc_progname,
1517 				   argv[optind], tfile[termcount]);
1518 
1519 		status = _nc_read_file_entry(tfile[termcount],
1520 					     &entries[termcount].tterm);
1521 #else
1522 		(void) fprintf(stderr, "%s: terminfo files not supported\n",
1523 			       _nc_progname);
1524 		MAIN_LEAKS();
1525 		ExitProgram(EXIT_FAILURE);
1526 #endif
1527 	    } else {
1528 		if (itrace)
1529 		    (void) fprintf(stderr,
1530 				   "%s: reading entry %s from database\n",
1531 				   _nc_progname,
1532 				   tname[termcount]);
1533 
1534 		status = _nc_read_entry(tname[termcount],
1535 					tfile[termcount],
1536 					&entries[termcount].tterm);
1537 	    }
1538 
1539 	    if (status <= 0) {
1540 		(void) fprintf(stderr,
1541 			       "%s: couldn't open terminfo file %s.\n",
1542 			       _nc_progname,
1543 			       tfile[termcount]);
1544 		MAIN_LEAKS();
1545 		ExitProgram(EXIT_FAILURE);
1546 	    }
1547 	    repair_acsc(&entries[termcount].tterm);
1548 	    termcount++;
1549 	}
1550 
1551 #if NCURSES_XNAMES
1552 	if (termcount > 1)
1553 	    _nc_align_termtype(&entries[0].tterm, &entries[1].tterm);
1554 #endif
1555 
1556 	/* dump as C initializer for the terminal type */
1557 	if (initdump) {
1558 	    if (initdump & 1)
1559 		dump_termtype(&entries[0].tterm);
1560 	    if (initdump & 2)
1561 		dump_initializers(&entries[0].tterm);
1562 	}
1563 
1564 	/* analyze the init strings */
1565 	else if (init_analyze) {
1566 #undef CUR
1567 #define CUR	entries[0].tterm.
1568 	    analyze_string("is1", init_1string, &entries[0].tterm);
1569 	    analyze_string("is2", init_2string, &entries[0].tterm);
1570 	    analyze_string("is3", init_3string, &entries[0].tterm);
1571 	    analyze_string("rs1", reset_1string, &entries[0].tterm);
1572 	    analyze_string("rs2", reset_2string, &entries[0].tterm);
1573 	    analyze_string("rs3", reset_3string, &entries[0].tterm);
1574 	    analyze_string("smcup", enter_ca_mode, &entries[0].tterm);
1575 	    analyze_string("rmcup", exit_ca_mode, &entries[0].tterm);
1576 #undef CUR
1577 	} else {
1578 
1579 	    /*
1580 	     * Here's where the real work gets done
1581 	     */
1582 	    switch (compare) {
1583 	    case C_DEFAULT:
1584 		if (itrace)
1585 		    (void) fprintf(stderr,
1586 				   "%s: about to dump %s\n",
1587 				   _nc_progname,
1588 				   tname[0]);
1589 		(void) printf("#\tReconstructed via infocmp from file: %s\n",
1590 			      tfile[0]);
1591 		dump_entry(&entries[0].tterm,
1592 			   suppress_untranslatable,
1593 			   limited,
1594 			   numbers,
1595 			   NULL);
1596 		len = show_entry();
1597 		if (itrace)
1598 		    (void) fprintf(stderr, "%s: length %d\n", _nc_progname, len);
1599 		break;
1600 
1601 	    case C_DIFFERENCE:
1602 		if (itrace)
1603 		    (void) fprintf(stderr, "%s: dumping differences\n", _nc_progname);
1604 		(void) printf("comparing %s to %s.\n", tname[0], tname[1]);
1605 		compare_entry(compare_predicate, &entries->tterm, quiet);
1606 		break;
1607 
1608 	    case C_COMMON:
1609 		if (itrace)
1610 		    (void) fprintf(stderr,
1611 				   "%s: dumping common capabilities\n",
1612 				   _nc_progname);
1613 		(void) printf("comparing %s to %s.\n", tname[0], tname[1]);
1614 		compare_entry(compare_predicate, &entries->tterm, quiet);
1615 		break;
1616 
1617 	    case C_NAND:
1618 		if (itrace)
1619 		    (void) fprintf(stderr,
1620 				   "%s: dumping differences\n",
1621 				   _nc_progname);
1622 		(void) printf("comparing %s to %s.\n", tname[0], tname[1]);
1623 		compare_entry(compare_predicate, &entries->tterm, quiet);
1624 		break;
1625 
1626 	    case C_USEALL:
1627 		if (itrace)
1628 		    (void) fprintf(stderr, "%s: dumping use entry\n", _nc_progname);
1629 		dump_entry(&entries[0].tterm,
1630 			   suppress_untranslatable,
1631 			   limited,
1632 			   numbers,
1633 			   use_predicate);
1634 		for (i = 1; i < termcount; i++)
1635 		    dump_uses(tname[i], !(outform == F_TERMCAP
1636 					  || outform == F_TCONVERR));
1637 		len = show_entry();
1638 		if (itrace)
1639 		    (void) fprintf(stderr, "%s: length %d\n", _nc_progname, len);
1640 		break;
1641 	    }
1642 	}
1643     } else if (compare == C_USEALL)
1644 	(void) fprintf(stderr, "Sorry, -u doesn't work with -F\n");
1645     else if (compare == C_DEFAULT)
1646 	(void) fprintf(stderr, "Use `tic -[CI] <file>' for this.\n");
1647     else if (argc - optind != 2)
1648 	(void) fprintf(stderr,
1649 		       "File comparison needs exactly two file arguments.\n");
1650     else
1651 	file_comparison(argc - optind, argv + optind);
1652 
1653     MAIN_LEAKS();
1654     ExitProgram(EXIT_SUCCESS);
1655 }
1656 
1657 /* infocmp.c ends here */
1658