xref: /openbsd-src/usr.bin/infocmp/infocmp.c (revision a28daedfc357b214be5c701aa8ba8adb29a7f1c2)
1 /*	$OpenBSD: infocmp.c,v 1.19 2007/06/02 01:29:12 pvalchev Exp $	*/
2 
3 /****************************************************************************
4  * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc.              *
5  *                                                                          *
6  * Permission is hereby granted, free of charge, to any person obtaining a  *
7  * copy of this software and associated documentation files (the            *
8  * "Software"), to deal in the Software without restriction, including      *
9  * without limitation the rights to use, copy, modify, merge, publish,      *
10  * distribute, distribute with modifications, sublicense, and/or sell       *
11  * copies of the Software, and to permit persons to whom the Software is    *
12  * furnished to do so, subject to the following conditions:                 *
13  *                                                                          *
14  * The above copyright notice and this permission notice shall be included  *
15  * in all copies or substantial portions of the Software.                   *
16  *                                                                          *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
20  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
23  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
24  *                                                                          *
25  * Except as contained in this notice, the name(s) of the above copyright   *
26  * holders shall not be used in advertising or otherwise to promote the     *
27  * sale, use or other dealings in this Software without prior written       *
28  * authorization.                                                           *
29  ****************************************************************************/
30 
31 /****************************************************************************
32  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
33  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
34  ****************************************************************************/
35 
36 /*
37  *	infocmp.c -- decompile an entry, or compare two entries
38  *		written by Eric S. Raymond
39  */
40 
41 #include <progs.priv.h>
42 
43 #include <term_entry.h>
44 #include <dump_entry.h>
45 
46 MODULE_ID("$From: infocmp.c,v 1.60 2001/02/24 22:03:12 tom Exp $")
47 
48 #define L_CURL "{"
49 #define R_CURL "}"
50 
51 #define MAXTERMS	32	/* max # terminal arguments we can handle */
52 #define MAX_STRING	1024	/* maximum formatted string */
53 
54 const char *_nc_progname = "infocmp";
55 
56 typedef char path[PATH_MAX];
57 
58 /***************************************************************************
59  *
60  * The following control variables, together with the contents of the
61  * terminfo entries, completely determine the actions of the program.
62  *
63  ***************************************************************************/
64 
65 static char *tname[MAXTERMS];	/* terminal type names */
66 static ENTRY entries[MAXTERMS];	/* terminfo entries */
67 static int termcount;		/* count of terminal entries */
68 
69 static bool limited = TRUE;	/* "-r" option is not set */
70 static bool quiet = FALSE;
71 static const char *bool_sep = ":";
72 static const char *s_absent = "NULL";
73 static const char *s_cancel = "NULL";
74 static const char *tversion;	/* terminfo version selected */
75 static int itrace;		/* trace flag for debugging */
76 static int mwidth = 60;
77 static int numbers = 0;		/* format "%'char'" to/from "%{number}" */
78 static int outform = F_TERMINFO;	/* output format */
79 static int sortmode;		/* sort_mode */
80 
81 /* main comparison mode */
82 static int compare;
83 #define C_DEFAULT	0	/* don't force comparison mode */
84 #define C_DIFFERENCE	1	/* list differences between two terminals */
85 #define C_COMMON	2	/* list common capabilities */
86 #define C_NAND		3	/* list capabilities in neither terminal */
87 #define C_USEALL	4	/* generate relative use-form entry */
88 static bool ignorepads;		/* ignore pad prefixes when diffing */
89 
90 #if NO_LEAKS
91 #undef ExitProgram
92 static void
93 ExitProgram(int code) GCC_NORETURN;
94 /* prototype is to get gcc to accept the noreturn attribute */
95      static void
96        ExitProgram(int code)
97 {
98     while (termcount-- > 0)
99 	_nc_free_termtype(&entries[termcount].tterm);
100     _nc_leaks_dump_entry();
101     _nc_free_and_exit(code);
102 }
103 #endif
104 
105 static char *
106 canonical_name(char *ptr, char *buf, size_t bufl)
107 /* extract the terminal type's primary name */
108 {
109     char *bp;
110 
111     (void) strlcpy(buf, ptr, bufl);
112     if ((bp = strchr(buf, '|')) != 0)
113 	*bp = '\0';
114 
115     return (buf);
116 }
117 
118 /***************************************************************************
119  *
120  * Predicates for dump function
121  *
122  ***************************************************************************/
123 
124 static int
125 capcmp(int idx, const char *s, const char *t)
126 /* capability comparison function */
127 {
128     if (!VALID_STRING(s) && !VALID_STRING(t))
129 	return (s != t);
130     else if (!VALID_STRING(s) || !VALID_STRING(t))
131 	return (1);
132 
133     if ((idx == acs_chars_index) || !ignorepads)
134 	return (strcmp(s, t));
135     else
136 	return (_nc_capcmp(s, t));
137 }
138 
139 static int
140 use_predicate(int type, int idx)
141 /* predicate function to use for use decompilation */
142 {
143     ENTRY *ep;
144 
145     switch (type) {
146     case BOOLEAN:
147 	{
148 	    int is_set = FALSE;
149 
150 	    /*
151 	     * This assumes that multiple use entries are supposed
152 	     * to contribute the logical or of their boolean capabilities.
153 	     * This is true if we take the semantics of multiple uses to
154 	     * be 'each capability gets the first non-default value found
155 	     * in the sequence of use entries'.
156 	     *
157 	     * Note that cancelled or absent booleans are stored as FALSE,
158 	     * unlike numbers and strings, whose cancelled/absent state is
159 	     * recorded in the terminfo database.
160 	     */
161 	    for (ep = &entries[1]; ep < entries + termcount; ep++)
162 		if (ep->tterm.Booleans[idx] == TRUE) {
163 		    is_set = entries[0].tterm.Booleans[idx];
164 		    break;
165 		}
166 	    if (is_set != entries[0].tterm.Booleans[idx])
167 		return (!is_set);
168 	    else
169 		return (FAIL);
170 	}
171 
172     case NUMBER:
173 	{
174 	    int value = ABSENT_NUMERIC;
175 
176 	    /*
177 	     * We take the semantics of multiple uses to be 'each
178 	     * capability gets the first non-default value found
179 	     * in the sequence of use entries'.
180 	     */
181 	    for (ep = &entries[1]; ep < entries + termcount; ep++)
182 		if (VALID_NUMERIC(ep->tterm.Numbers[idx])) {
183 		    value = ep->tterm.Numbers[idx];
184 		    break;
185 		}
186 
187 	    if (value != entries[0].tterm.Numbers[idx])
188 		return (value != ABSENT_NUMERIC);
189 	    else
190 		return (FAIL);
191 	}
192 
193     case STRING:
194 	{
195 	    char *termstr, *usestr = ABSENT_STRING;
196 
197 	    termstr = entries[0].tterm.Strings[idx];
198 
199 	    /*
200 	     * We take the semantics of multiple uses to be 'each
201 	     * capability gets the first non-default value found
202 	     * in the sequence of use entries'.
203 	     */
204 	    for (ep = &entries[1]; ep < entries + termcount; ep++)
205 		if (ep->tterm.Strings[idx]) {
206 		    usestr = ep->tterm.Strings[idx];
207 		    break;
208 		}
209 
210 	    if (usestr == ABSENT_STRING && termstr == ABSENT_STRING)
211 		return (FAIL);
212 	    else if (!usestr || !termstr || capcmp(idx, usestr, termstr))
213 		return (TRUE);
214 	    else
215 		return (FAIL);
216 	}
217     }
218 
219     return (FALSE);		/* pacify compiler */
220 }
221 
222 static bool
223 useeq(ENTRY * e1, ENTRY * e2)
224 /* are the use references in two entries equivalent? */
225 {
226     int i, j;
227 
228     if (e1->nuses != e2->nuses)
229 	return (FALSE);
230 
231     /* Ugh...this is quadratic again */
232     for (i = 0; i < e1->nuses; i++) {
233 	bool foundmatch = FALSE;
234 
235 	/* search second entry for given use reference */
236 	for (j = 0; j < e2->nuses; j++)
237 	    if (!strcmp(e1->uses[i].name, e2->uses[j].name)) {
238 		foundmatch = TRUE;
239 		break;
240 	    }
241 
242 	if (!foundmatch)
243 	    return (FALSE);
244     }
245 
246     return (TRUE);
247 }
248 
249 static bool
250 entryeq(TERMTYPE * t1, TERMTYPE * t2)
251 /* are two entries equivalent? */
252 {
253     int i;
254 
255     for (i = 0; i < NUM_BOOLEANS(t1); i++)
256 	if (t1->Booleans[i] != t2->Booleans[i])
257 	    return (FALSE);
258 
259     for (i = 0; i < NUM_NUMBERS(t1); i++)
260 	if (t1->Numbers[i] != t2->Numbers[i])
261 	    return (FALSE);
262 
263     for (i = 0; i < NUM_STRINGS(t1); i++)
264 	if (capcmp(i, t1->Strings[i], t2->Strings[i]))
265 	    return (FALSE);
266 
267     return (TRUE);
268 }
269 
270 #define TIC_EXPAND(result) _nc_tic_expand(result, outform==F_TERMINFO, numbers)
271 
272 static void
273 print_uses(ENTRY * ep, FILE * fp)
274 /* print an entry's use references */
275 {
276     int i;
277 
278     if (!ep->nuses)
279 	fputs("NULL", fp);
280     else
281 	for (i = 0; i < ep->nuses; i++) {
282 	    fputs(ep->uses[i].name, fp);
283 	    if (i < ep->nuses - 1)
284 		fputs(" ", fp);
285 	}
286 }
287 
288 static const char *
289 dump_boolean(int val)
290 /* display the value of a boolean capability */
291 {
292     switch (val) {
293     case ABSENT_BOOLEAN:
294 	return (s_absent);
295     case CANCELLED_BOOLEAN:
296 	return (s_cancel);
297     case FALSE:
298 	return ("F");
299     case TRUE:
300 	return ("T");
301     default:
302 	return ("?");
303     }
304 }
305 
306 static void
307 dump_numeric(int val, char *buf, size_t bufl)
308 /* display the value of a boolean capability */
309 {
310     switch (val) {
311     case ABSENT_NUMERIC:
312 	strlcpy(buf, s_absent, bufl);
313 	break;
314     case CANCELLED_NUMERIC:
315 	strlcpy(buf, s_cancel, bufl);
316 	break;
317     default:
318 	snprintf(buf, bufl, "%d", val);
319 	break;
320     }
321 }
322 
323 static void
324 dump_string(char *val, char *buf, size_t bufl)
325 /* display the value of a string capability */
326 {
327     if (val == ABSENT_STRING)
328 	strlcpy(buf, s_absent, bufl);
329     else if (val == CANCELLED_STRING)
330 	strlcpy(buf, s_cancel, bufl);
331     else {
332 	snprintf(buf, bufl, "'%.*s'", MAX_STRING - 3, TIC_EXPAND(val));
333     }
334 }
335 
336 static void
337 compare_predicate(int type, int idx, const char *name)
338 /* predicate function to use for entry difference reports */
339 {
340     ENTRY *e1 = &entries[0];
341     ENTRY *e2 = &entries[1];
342     char buf1[MAX_STRING], buf2[MAX_STRING];
343     int b1, b2;
344     int n1, n2;
345     char *s1, *s2;
346 
347     switch (type) {
348     case CMP_BOOLEAN:
349 	b1 = e1->tterm.Booleans[idx];
350 	b2 = e2->tterm.Booleans[idx];
351 	switch (compare) {
352 	case C_DIFFERENCE:
353 	    if (!(b1 == ABSENT_BOOLEAN && b2 == ABSENT_BOOLEAN) && b1 != b2)
354 		(void) printf("\t%s: %s%s%s.\n",
355 			      name,
356 			      dump_boolean(b1),
357 			      bool_sep,
358 			      dump_boolean(b2));
359 	    break;
360 
361 	case C_COMMON:
362 	    if (b1 == b2 && b1 != ABSENT_BOOLEAN)
363 		(void) printf("\t%s= %s.\n", name, dump_boolean(b1));
364 	    break;
365 
366 	case C_NAND:
367 	    if (b1 == ABSENT_BOOLEAN && b2 == ABSENT_BOOLEAN)
368 		(void) printf("\t!%s.\n", name);
369 	    break;
370 	}
371 	break;
372 
373     case CMP_NUMBER:
374 	n1 = e1->tterm.Numbers[idx];
375 	n2 = e2->tterm.Numbers[idx];
376 	dump_numeric(n1, buf1, sizeof buf1);
377 	dump_numeric(n2, buf2, sizeof buf2);
378 	switch (compare) {
379 	case C_DIFFERENCE:
380 	    if (!((n1 == ABSENT_NUMERIC && n2 == ABSENT_NUMERIC)) && n1 != n2)
381 		(void) printf("\t%s: %s, %s.\n", name, buf1, buf2);
382 	    break;
383 
384 	case C_COMMON:
385 	    if (n1 != ABSENT_NUMERIC && n2 != ABSENT_NUMERIC && n1 == n2)
386 		(void) printf("\t%s= %s.\n", name, buf1);
387 	    break;
388 
389 	case C_NAND:
390 	    if (n1 == ABSENT_NUMERIC && n2 == ABSENT_NUMERIC)
391 		(void) printf("\t!%s.\n", name);
392 	    break;
393 	}
394 	break;
395 
396     case CMP_STRING:
397 	s1 = e1->tterm.Strings[idx];
398 	s2 = e2->tterm.Strings[idx];
399 	switch (compare) {
400 	case C_DIFFERENCE:
401 	    if (capcmp(idx, s1, s2)) {
402 		dump_string(s1, buf1, sizeof buf1);
403 		dump_string(s2, buf2, sizeof buf2);
404 		if (strcmp(buf1, buf2))
405 		    (void) printf("\t%s: %s, %s.\n", name, buf1, buf2);
406 	    }
407 	    break;
408 
409 	case C_COMMON:
410 	    if (s1 && s2 && !capcmp(idx, s1, s2))
411 		(void) printf("\t%s= '%s'.\n", name, TIC_EXPAND(s1));
412 	    break;
413 
414 	case C_NAND:
415 	    if (!s1 && !s2)
416 		(void) printf("\t!%s.\n", name);
417 	    break;
418 	}
419 	break;
420 
421     case CMP_USE:
422 	/* unlike the other modes, this compares *all* use entries */
423 	switch (compare) {
424 	case C_DIFFERENCE:
425 	    if (!useeq(e1, e2)) {
426 		(void) fputs("\tuse: ", stdout);
427 		print_uses(e1, stdout);
428 		fputs(", ", stdout);
429 		print_uses(e2, stdout);
430 		fputs(".\n", stdout);
431 	    }
432 	    break;
433 
434 	case C_COMMON:
435 	    if (e1->nuses && e2->nuses && useeq(e1, e2)) {
436 		(void) fputs("\tuse: ", stdout);
437 		print_uses(e1, stdout);
438 		fputs(".\n", stdout);
439 	    }
440 	    break;
441 
442 	case C_NAND:
443 	    if (!e1->nuses && !e2->nuses)
444 		(void) printf("\t!use.\n");
445 	    break;
446 	}
447     }
448 }
449 
450 /***************************************************************************
451  *
452  * Init string analysis
453  *
454  ***************************************************************************/
455 
456 typedef struct {
457     const char *from;
458     const char *to;
459 } assoc;
460 
461 static const assoc std_caps[] =
462 {
463     /* these are specified by X.364 and iBCS2 */
464     {"\033c", "RIS"},		/* full reset */
465     {"\0337", "SC"},		/* save cursor */
466     {"\0338", "RC"},		/* restore cursor */
467     {"\033[r", "RSR"},		/* not an X.364 mnemonic */
468     {"\033[m", "SGR0"},		/* not an X.364 mnemonic */
469     {"\033[2J", "ED2"},		/* clear page */
470 
471     /* this group is specified by ISO 2022 */
472     {"\033(0", "ISO DEC G0"},	/* enable DEC graphics for G0 */
473     {"\033(A", "ISO UK G0"},	/* enable UK chars for G0 */
474     {"\033(B", "ISO US G0"},	/* enable US chars for G0 */
475     {"\033)0", "ISO DEC G1"},	/* enable DEC graphics for G1 */
476     {"\033)A", "ISO UK G1"},	/* enable UK chars for G1 */
477     {"\033)B", "ISO US G1"},	/* enable US chars for G1 */
478 
479     /* these are DEC private modes widely supported by emulators */
480     {"\033=", "DECPAM"},	/* application keypad mode */
481     {"\033>", "DECPNM"},	/* normal keypad mode */
482     {"\033<", "DECANSI"},	/* enter ANSI mode */
483 
484     {(char *) 0, (char *) 0}
485 };
486 
487 static const assoc private_modes[] =
488 /* DEC \E[ ... [hl] modes recognized by many emulators */
489 {
490     {"1", "CKM"},		/* application cursor keys */
491     {"2", "ANM"},		/* set VT52 mode */
492     {"3", "COLM"},		/* 132-column mode */
493     {"4", "SCLM"},		/* smooth scroll */
494     {"5", "SCNM"},		/* reverse video mode */
495     {"6", "OM"},		/* origin mode */
496     {"7", "AWM"},		/* wraparound mode */
497     {"8", "ARM"},		/* auto-repeat mode */
498     {(char *) 0, (char *) 0}
499 };
500 
501 static const assoc ecma_highlights[] =
502 /* recognize ECMA attribute sequences */
503 {
504     {"0", "NORMAL"},		/* normal */
505     {"1", "+BOLD"},		/* bold on */
506     {"2", "+DIM"},		/* dim on */
507     {"3", "+ITALIC"},		/* italic on */
508     {"4", "+UNDERLINE"},	/* underline on */
509     {"5", "+BLINK"},		/* blink on */
510     {"6", "+FASTBLINK"},	/* fastblink on */
511     {"7", "+REVERSE"},		/* reverse on */
512     {"8", "+INVISIBLE"},	/* invisible on */
513     {"9", "+DELETED"},		/* deleted on */
514     {"10", "MAIN-FONT"},	/* select primary font */
515     {"11", "ALT-FONT-1"},	/* select alternate font 1 */
516     {"12", "ALT-FONT-2"},	/* select alternate font 2 */
517     {"13", "ALT-FONT-3"},	/* select alternate font 3 */
518     {"14", "ALT-FONT-4"},	/* select alternate font 4 */
519     {"15", "ALT-FONT-5"},	/* select alternate font 5 */
520     {"16", "ALT-FONT-6"},	/* select alternate font 6 */
521     {"17", "ALT-FONT-7"},	/* select alternate font 7 */
522     {"18", "ALT-FONT-1"},	/* select alternate font 1 */
523     {"19", "ALT-FONT-1"},	/* select alternate font 1 */
524     {"20", "FRAKTUR"},		/* Fraktur font */
525     {"21", "DOUBLEUNDER"},	/* double underline */
526     {"22", "-DIM"},		/* dim off */
527     {"23", "-ITALIC"},		/* italic off */
528     {"24", "-UNDERLINE"},	/* underline off */
529     {"25", "-BLINK"},		/* blink off */
530     {"26", "-FASTBLINK"},	/* fastblink off */
531     {"27", "-REVERSE"},		/* reverse off */
532     {"28", "-INVISIBLE"},	/* invisible off */
533     {"29", "-DELETED"},		/* deleted off */
534     {(char *) 0, (char *) 0}
535 };
536 
537 static void
538 analyze_string(const char *name, const char *cap, TERMTYPE * tp)
539 {
540     char buf[MAX_TERMINFO_LENGTH];
541     char buf2[MAX_TERMINFO_LENGTH];
542     const char *sp, *ep;
543     const assoc *ap;
544 
545     if (cap == ABSENT_STRING || cap == CANCELLED_STRING)
546 	return;
547     (void) printf("%s: ", name);
548 
549     buf[0] = '\0';
550     for (sp = cap; *sp; sp++) {
551 	int i;
552 	size_t len = 0;
553 	const char *expansion = 0;
554 
555 	/* first, check other capabilities in this entry */
556 	for (i = 0; i < STRCOUNT; i++) {
557 	    char *cp = tp->Strings[i];
558 
559 	    /* don't use soft-key capabilities */
560 	    if (strnames[i][0] == 'k' && strnames[i][0] == 'f')
561 		continue;
562 
563 	    if (cp != ABSENT_STRING && cp != CANCELLED_STRING && cp[0] && cp
564 		!= cap) {
565 		len = strlen(cp);
566 		(void) strncpy(buf2, sp, len);
567 		buf2[len] = '\0';
568 
569 		if (_nc_capcmp(cp, buf2))
570 		    continue;
571 
572 #define ISRS(s)	(!strncmp((s), "is", 2) || !strncmp((s), "rs", 2))
573 		/*
574 		 * Theoretically we just passed the test for translation
575 		 * (equality once the padding is stripped).  However, there
576 		 * are a few more hoops that need to be jumped so that
577 		 * identical pairs of initialization and reset strings
578 		 * don't just refer to each other.
579 		 */
580 		if (ISRS(name) || ISRS(strnames[i]))
581 		    if (cap < cp)
582 			continue;
583 #undef ISRS
584 
585 		expansion = strnames[i];
586 		break;
587 	    }
588 	}
589 
590 	/* now check the standard capabilities */
591 	if (!expansion)
592 	    for (ap = std_caps; ap->from; ap++) {
593 		len = strlen(ap->from);
594 
595 		if (strncmp(ap->from, sp, len) == 0) {
596 		    expansion = ap->to;
597 		    break;
598 		}
599 	    }
600 
601 	/* now check for private-mode sequences */
602 	if (!expansion
603 	    && sp[0] == '\033' && sp[1] == '[' && sp[2] == '?'
604 	    && (len = strspn(sp + 3, "0123456789;"))
605 	    && ((sp[3 + len] == 'h') || (sp[3 + len] == 'l'))) {
606 	    char buf3[MAX_TERMINFO_LENGTH];
607 
608 	    (void) strlcpy(buf2, (sp[3 + len] == 'h') ? "DEC+" : "DEC-",
609 		sizeof buf2);
610 	    (void) strncpy(buf3, sp + 3, len);
611 	    len += 4;
612 	    buf3[len] = '\0';
613 
614 	    ep = strtok(buf3, ";");
615 	    do {
616 		bool found = FALSE;
617 
618 		for (ap = private_modes; ap->from; ap++) {
619 		    size_t tlen = strlen(ap->from);
620 
621 		    if (strncmp(ap->from, ep, tlen) == 0) {
622 			(void) strlcat(buf2, ap->to, sizeof buf2);
623 			found = TRUE;
624 			break;
625 		    }
626 		}
627 
628 		if (!found)
629 		    (void) strlcat(buf2, ep, sizeof buf2);
630 		(void) strlcat(buf2, ";", sizeof buf2);
631 	    } while
632 		((ep = strtok((char *) 0, ";")));
633 	    if (buf2[0] != '\0' && buf2[strlen(buf2) - 1] == ';')
634 		    buf2[strlen(buf2) - 1] = '\0';
635 	    expansion = buf2;
636 	}
637 
638 	/* now check for ECMA highlight sequences */
639 	if (!expansion
640 	    && sp[0] == '\033' && sp[1] == '['
641 	    && (len = strspn(sp + 2, "0123456789;"))
642 	    && sp[2 + len] == 'm') {
643 	    char buf3[MAX_TERMINFO_LENGTH];
644 
645 	    (void) strlcpy(buf2, "SGR:", sizeof buf2);
646 	    (void) strncpy(buf3, sp + 2, len);
647 	    len += 3;
648 	    buf3[len] = '\0';
649 
650 	    ep = strtok(buf3, ";");
651 	    do {
652 		bool found = FALSE;
653 
654 		for (ap = ecma_highlights; ap->from; ap++) {
655 		    size_t tlen = strlen(ap->from);
656 
657 		    if (strncmp(ap->from, ep, tlen) == 0) {
658 			(void) strlcat(buf2, ap->to, sizeof buf2);
659 			found = TRUE;
660 			break;
661 		    }
662 		}
663 
664 		if (!found)
665 		    (void) strlcat(buf2, ep, sizeof buf2);
666 		(void) strlcat(buf2, ";", sizeof buf2);
667 	    } while
668 		((ep = strtok((char *) 0, ";")));
669 
670 	    if (buf2[0] != '\0' && buf2[strlen(buf2) - 1] == ';')
671 		    buf2[strlen(buf2) - 1] = '\0';
672 	    expansion = buf2;
673 	}
674 	/* now check for scroll region reset */
675 	if (!expansion) {
676 	    (void) snprintf(buf2, sizeof buf2, "\033[1;%dr", tp->Numbers[2]);
677 	    len = strlen(buf2);
678 	    if (strncmp(buf2, sp, len) == 0)
679 		expansion = "RSR";
680 	}
681 
682 	/* now check for home-down */
683 	if (!expansion) {
684 	    (void) snprintf(buf2, sizeof buf2, "\033[%d;1H", tp->Numbers[2]);
685 	    len = strlen(buf2);
686 	    if (strncmp(buf2, sp, len) == 0)
687 		expansion = "LL";
688 	}
689 
690 	/* now look at the expansion we got, if any */
691 	if (expansion) {
692 	    (void) snprintf(buf + strlen(buf), sizeof buf - strlen(buf),
693 		"{%s}", expansion);
694 	    sp += len - 1;
695 	    continue;
696 	} else {
697 	    /* couldn't match anything */
698 	    buf2[0] = *sp;
699 	    buf2[1] = '\0';
700 	    (void) strlcat(buf, TIC_EXPAND(buf2), sizeof buf);
701 	}
702     }
703     (void) printf("%s\n", buf);
704 }
705 
706 /***************************************************************************
707  *
708  * File comparison
709  *
710  ***************************************************************************/
711 
712 static void
713 file_comparison(int argc, char *argv[])
714 {
715 #define MAXCOMPARE	2
716     /* someday we may allow comparisons on more files */
717     int filecount = 0;
718     ENTRY *heads[MAXCOMPARE];
719     ENTRY *qp, *rp;
720     int i, n;
721 
722     dump_init((char *) 0, F_LITERAL, S_TERMINFO, 0, itrace, FALSE);
723 
724     for (n = 0; n < argc && n < MAXCOMPARE; n++) {
725 	if (freopen(argv[n], "r", stdin) == 0)
726 	    _nc_err_abort("Can't open %s", argv[n]);
727 
728 	_nc_head = _nc_tail = 0;
729 
730 	/* parse entries out of the source file */
731 	_nc_set_source(argv[n]);
732 	_nc_read_entry_source(stdin, NULL, TRUE, FALSE, NULLHOOK);
733 
734 	if (itrace)
735 	    (void) fprintf(stderr, "Resolving file %d...\n", n - 0);
736 
737 	/* maybe do use resolution */
738 	if (!_nc_resolve_uses(!limited)) {
739 	    (void) fprintf(stderr,
740 			   "There are unresolved use entries in %s:\n",
741 			   argv[n]);
742 	    for_entry_list(qp) {
743 		if (qp->nuses) {
744 		    (void) fputs(qp->tterm.term_names, stderr);
745 		    (void) fputc('\n', stderr);
746 		}
747 	    }
748 	    exit(EXIT_FAILURE);
749 	}
750 
751 	heads[filecount] = _nc_head;
752 	filecount++;
753     }
754 
755     /* OK, all entries are in core.  Ready to do the comparison */
756     if (itrace)
757 	(void) fprintf(stderr, "Entries are now in core...\n");
758 
759     /* The entry-matching loop. Sigh, this is intrinsically quadratic. */
760     for (qp = heads[0]; qp; qp = qp->next) {
761 	for (rp = heads[1]; rp; rp = rp->next)
762 	    if (_nc_entry_match(qp->tterm.term_names, rp->tterm.term_names)) {
763 		if (qp->ncrosslinks < MAX_CROSSLINKS)
764 		    qp->crosslinks[qp->ncrosslinks] = rp;
765 		qp->ncrosslinks++;
766 
767 		if (rp->ncrosslinks < MAX_CROSSLINKS)
768 		    rp->crosslinks[rp->ncrosslinks] = qp;
769 		rp->ncrosslinks++;
770 	    }
771     }
772 
773     /* now we have two circular lists with crosslinks */
774     if (itrace)
775 	(void) fprintf(stderr, "Name matches are done...\n");
776 
777     for (qp = heads[0]; qp; qp = qp->next) {
778 	if (qp->ncrosslinks > 1) {
779 	    (void) fprintf(stderr,
780 			   "%s in file 1 (%s) has %d matches in file 2 (%s):\n",
781 			   _nc_first_name(qp->tterm.term_names),
782 			   argv[0],
783 			   qp->ncrosslinks,
784 			   argv[1]);
785 	    for (i = 0; i < qp->ncrosslinks; i++)
786 		(void) fprintf(stderr,
787 			       "\t%s\n",
788 			       _nc_first_name((qp->crosslinks[i])->tterm.term_names));
789 	}
790     }
791 
792     for (rp = heads[1]; rp; rp = rp->next) {
793 	if (rp->ncrosslinks > 1) {
794 	    (void) fprintf(stderr,
795 			   "%s in file 2 (%s) has %d matches in file 1 (%s):\n",
796 			   _nc_first_name(rp->tterm.term_names),
797 			   argv[1],
798 			   rp->ncrosslinks,
799 			   argv[0]);
800 	    for (i = 0; i < rp->ncrosslinks; i++)
801 		(void) fprintf(stderr,
802 			       "\t%s\n",
803 			       _nc_first_name((rp->crosslinks[i])->tterm.term_names));
804 	}
805     }
806 
807     (void) printf("In file 1 (%s) only:\n", argv[0]);
808     for (qp = heads[0]; qp; qp = qp->next)
809 	if (qp->ncrosslinks == 0)
810 	    (void) printf("\t%s\n",
811 			  _nc_first_name(qp->tterm.term_names));
812 
813     (void) printf("In file 2 (%s) only:\n", argv[1]);
814     for (rp = heads[1]; rp; rp = rp->next)
815 	if (rp->ncrosslinks == 0)
816 	    (void) printf("\t%s\n",
817 			  _nc_first_name(rp->tterm.term_names));
818 
819     (void) printf("The following entries are equivalent:\n");
820     for (qp = heads[0]; qp; qp = qp->next) {
821 	rp = qp->crosslinks[0];
822 
823 	if (qp->ncrosslinks == 1) {
824 	    rp = qp->crosslinks[0];
825 
826 	    repair_acsc(&qp->tterm);
827 	    repair_acsc(&rp->tterm);
828 #if NCURSES_XNAMES
829 	    _nc_align_termtype(&qp->tterm, &rp->tterm);
830 #endif
831 	    if (entryeq(&qp->tterm, &rp->tterm) && useeq(qp, rp)) {
832 		char name1[NAMESIZE], name2[NAMESIZE];
833 
834 		(void) canonical_name(qp->tterm.term_names, name1, sizeof name1);
835 		(void) canonical_name(rp->tterm.term_names, name2, sizeof name2);
836 
837 		(void) printf("%s = %s\n", name1, name2);
838 	    }
839 	}
840     }
841 
842     (void) printf("Differing entries:\n");
843     termcount = 2;
844     for (qp = heads[0]; qp; qp = qp->next) {
845 
846 	if (qp->ncrosslinks == 1) {
847 	    rp = qp->crosslinks[0];
848 #if NCURSES_XNAMES
849 	    /* sorry - we have to do this on each pass */
850 	    _nc_align_termtype(&qp->tterm, &rp->tterm);
851 #endif
852 	    if (!(entryeq(&qp->tterm, &rp->tterm) && useeq(qp, rp))) {
853 		char name1[NAMESIZE], name2[NAMESIZE];
854 
855 		entries[0] = *qp;
856 		entries[1] = *rp;
857 
858 		(void) canonical_name(qp->tterm.term_names, name1, sizeof name1);
859 		(void) canonical_name(rp->tterm.term_names, name2, sizeof name2);
860 
861 		switch (compare) {
862 		case C_DIFFERENCE:
863 		    if (itrace)
864 			(void) fprintf(stderr,
865 				       "infocmp: dumping differences\n");
866 		    (void) printf("comparing %s to %s.\n", name1, name2);
867 		    compare_entry(compare_predicate, &entries->tterm, quiet);
868 		    break;
869 
870 		case C_COMMON:
871 		    if (itrace)
872 			(void) fprintf(stderr,
873 				       "infocmp: dumping common capabilities\n");
874 		    (void) printf("comparing %s to %s.\n", name1, name2);
875 		    compare_entry(compare_predicate, &entries->tterm, quiet);
876 		    break;
877 
878 		case C_NAND:
879 		    if (itrace)
880 			(void) fprintf(stderr,
881 				       "infocmp: dumping differences\n");
882 		    (void) printf("comparing %s to %s.\n", name1, name2);
883 		    compare_entry(compare_predicate, &entries->tterm, quiet);
884 		    break;
885 
886 		}
887 	    }
888 	}
889     }
890 }
891 
892 static void
893 usage(void)
894 {
895     static const char *tbl[] =
896     {
897 	"Usage: infocmp [options] [-A directory] [-B directory] [termname...]"
898 	,""
899 	,"Options:"
900 	,"  -1    print single-column"
901 	,"  -C    use termcap-names"
902 	,"  -F    compare terminfo-files"
903 	,"  -I    use terminfo-names"
904 	,"  -L    use long names"
905 	,"  -R subset (see manpage)"
906 	,"  -T    eliminate size limits (test)"
907 	,"  -V    print version"
908 #if NCURSES_XNAMES
909 	,"  -a    with -F, list commented-out caps"
910 #endif
911 	,"  -c    list common capabilities"
912 	,"  -d    list different capabilities"
913 	,"  -e    format output for C initializer"
914 	,"  -E    format output as C tables"
915 	,"  -f    with -1, format complex strings"
916 	,"  -G    format %{number} to %'char'"
917 	,"  -g    format %'char' to %{number}"
918 	,"  -i    analyze initialization/reset"
919 	,"  -l    output terminfo names"
920 	,"  -n    list capabilities in neither"
921 	,"  -p    ignore padding specifiers"
922 	,"  -q    brief listing, removes headers"
923 	,"  -r    with -C, output in termcap form"
924 	,"  -r    with -F, resolve use-references"
925 	,"  -s [d|i|l|c] sort fields"
926 	,"  -u    produce source with 'use='"
927 	,"  -v number  (verbose)"
928 	,"  -w number  (width)"
929     };
930     const size_t first = 3;
931     const size_t last = SIZEOF(tbl);
932     const size_t left = (last - first + 1) / 2 + first;
933     size_t n;
934 
935     for (n = 0; n < left; n++) {
936 	size_t m = (n < first) ? last : n + left - first;
937 	if (m < last)
938 	    fprintf(stderr, "%-40.40s%s\n", tbl[n], tbl[m]);
939 	else
940 	    fprintf(stderr, "%s\n", tbl[n]);
941     }
942     exit(EXIT_FAILURE);
943 }
944 
945 static char *
946 name_initializer(const char *type)
947 {
948     static char *initializer;
949     static size_t len;
950     char *s;
951 
952     if (initializer == 0) {
953 	len = strlen(entries->tterm.term_names) + 20;
954 	initializer = (char *) malloc(len);
955     }
956 
957     (void) snprintf(initializer, len, "%s_data_%s", type, entries->tterm.term_names);
958     for (s = initializer; *s != 0 && *s != '|'; s++) {
959 	if (!isalnum(CharOf(*s)))
960 	    *s = '_';
961     }
962     *s = 0;
963     return initializer;
964 }
965 
966 /* dump C initializers for the terminal type */
967 static void
968 dump_initializers(TERMTYPE * term)
969 {
970     int n;
971     const char *str = 0;
972     int size;
973 
974     (void) printf("static char %s[] = %s\n", name_initializer("bool"), L_CURL);
975 
976     for_each_boolean(n, term) {
977 	switch ((int) (term->Booleans[n])) {
978 	case TRUE:
979 	    str = "TRUE";
980 	    break;
981 
982 	case FALSE:
983 	    str = "FALSE";
984 	    break;
985 
986 	case ABSENT_BOOLEAN:
987 	    str = "ABSENT_BOOLEAN";
988 	    break;
989 
990 	case CANCELLED_BOOLEAN:
991 	    str = "CANCELLED_BOOLEAN";
992 	    break;
993 	}
994 	(void) printf("\t/* %3d: %-8s */\t%s,\n",
995 		      n, ExtBoolname(term, n, boolnames), str);
996     }
997     (void) printf("%s;\n", R_CURL);
998 
999     (void) printf("static short %s[] = %s\n", name_initializer("number"), L_CURL);
1000 
1001     for_each_number(n, term) {
1002 	char buf[BUFSIZ];
1003 	switch (term->Numbers[n]) {
1004 	case ABSENT_NUMERIC:
1005 	    str = "ABSENT_NUMERIC";
1006 	    break;
1007 	case CANCELLED_NUMERIC:
1008 	    str = "CANCELLED_NUMERIC";
1009 	    break;
1010 	default:
1011 	    snprintf(buf, sizeof buf, "%d", term->Numbers[n]);
1012 	    str = buf;
1013 	    break;
1014 	}
1015 	(void) printf("\t/* %3d: %-8s */\t%s,\n", n,
1016 		      ExtNumname(term, n, numnames), str);
1017     }
1018     (void) printf("%s;\n", R_CURL);
1019 
1020     size = sizeof(TERMTYPE)
1021 	+ (NUM_BOOLEANS(term) * sizeof(term->Booleans[0]))
1022 	+ (NUM_NUMBERS(term) * sizeof(term->Numbers[0]));
1023 
1024     (void) printf("static char * %s[] = %s\n", name_initializer("string"), L_CURL);
1025 
1026     for_each_string(n, term) {
1027 	char buf[MAX_STRING], *sp, *tp;
1028 
1029 	if (term->Strings[n] == ABSENT_STRING)
1030 	    str = "ABSENT_STRING";
1031 	else if (term->Strings[n] == CANCELLED_STRING)
1032 	    str = "CANCELLED_STRING";
1033 	else {
1034 	    tp = buf;
1035 	    *tp++ = '"';
1036 	    for (sp = term->Strings[n];
1037 		 *sp != 0 && (tp - buf) < MAX_STRING - 6;
1038 		 sp++) {
1039 		if (isascii(CharOf(*sp))
1040 		    && isprint(CharOf(*sp))
1041 		    && *sp != '\\'
1042 		    && *sp != '"')
1043 		    *tp++ = *sp;
1044 		else {
1045 		    (void) snprintf(tp, buf + sizeof buf - tp, "\\%03o", CharOf(*sp));
1046 		    tp += strlen(tp);
1047 		}
1048 	    }
1049 	    *tp++ = '"';
1050 	    *tp = '\0';
1051 	    size += (strlen(term->Strings[n]) + 1);
1052 	    str = buf;
1053 	}
1054 #if NCURSES_XNAMES
1055 	if (n == STRCOUNT) {
1056 	    (void) printf("%s;\n", R_CURL);
1057 
1058 	    (void) printf("static char * %s[] = %s\n",
1059 			  name_initializer("string_ext"), L_CURL);
1060 	}
1061 #endif
1062 	(void) printf("\t/* %3d: %-8s */\t%s,\n", n,
1063 		      ExtStrname(term, n, strnames), str);
1064     }
1065     (void) printf("%s;\n", R_CURL);
1066 }
1067 
1068 /* dump C initializers for the terminal type */
1069 static void
1070 dump_termtype(TERMTYPE * term)
1071 {
1072     (void) printf("\t%s\n\t\t\"%s\",\n", L_CURL, term->term_names);
1073     (void) printf("\t\t(char *)0,\t/* pointer to string table */\n");
1074 
1075     (void) printf("\t\t%s,\n", name_initializer("bool"));
1076     (void) printf("\t\t%s,\n", name_initializer("number"));
1077 
1078     (void) printf("\t\t%s,\n", name_initializer("string"));
1079 
1080 #if NCURSES_XNAMES
1081     (void) printf("#if NCURSES_XNAMES\n");
1082     (void) printf("\t\t(char *)0,\t/* pointer to extended string table */\n");
1083     (void) printf("\t\t%s,\t/* ...corresponding names */\n",
1084 		  (NUM_STRINGS(term) != STRCOUNT)
1085 		  ? name_initializer("string_ext")
1086 		  : "(char **)0");
1087 
1088     (void) printf("\t\t%d,\t\t/* count total Booleans */\n", NUM_BOOLEANS(term));
1089     (void) printf("\t\t%d,\t\t/* count total Numbers */\n", NUM_NUMBERS(term));
1090     (void) printf("\t\t%d,\t\t/* count total Strings */\n", NUM_STRINGS(term));
1091 
1092     (void) printf("\t\t%d,\t\t/* count extensions to Booleans */\n",
1093 		  NUM_BOOLEANS(term) - BOOLCOUNT);
1094     (void) printf("\t\t%d,\t\t/* count extensions to Numbers */\n",
1095 		  NUM_NUMBERS(term) - NUMCOUNT);
1096     (void) printf("\t\t%d,\t\t/* count extensions to Strings */\n",
1097 		  NUM_STRINGS(term) - STRCOUNT);
1098 
1099     (void) printf("#endif /* NCURSES_XNAMES */\n");
1100 #endif /* NCURSES_XNAMES */
1101     (void) printf("\t%s\n", R_CURL);
1102 }
1103 
1104 static int
1105 optarg_to_number(void)
1106 {
1107     char *temp = 0;
1108     long value = strtol(optarg, &temp, 0);
1109 
1110     if (temp == 0 || temp == optarg || *temp != 0) {
1111 	fprintf(stderr, "Expected a number, not \"%s\"\n", optarg);
1112 	exit(EXIT_FAILURE);
1113     }
1114     return (int) value;
1115 }
1116 
1117 /***************************************************************************
1118  *
1119  * Main sequence
1120  *
1121  ***************************************************************************/
1122 
1123 int
1124 main(int argc, char *argv[])
1125 {
1126     char *terminal, *firstdir, *restdir;
1127     /* Avoid "local data >32k" error with mwcc */
1128     /* Also avoid overflowing smaller stacks on systems like AmigaOS */
1129     size_t tlen = sizeof(path) * MAXTERMS;
1130     path *tfile = (path *) malloc(tlen);
1131     int c, i, len;
1132     bool formatted = FALSE;
1133     bool filecompare = FALSE;
1134     int initdump = 0;
1135     bool init_analyze = FALSE;
1136 
1137     if ((terminal = getenv("TERM")) == 0) {
1138 	(void) fprintf(stderr,
1139 		       "infocmp: environment variable TERM not set\n");
1140 	return EXIT_FAILURE;
1141     }
1142 
1143     /* where is the terminfo database location going to default to? */
1144     restdir = firstdir = 0;
1145 
1146     while ((c = getopt(argc, argv, "adeEcCfFGgIinlLpqrR:s:uv:Vw:A:B:1T")) != -1)
1147 	switch (c) {
1148 #if NCURSES_XNAMES
1149 	case 'a':
1150 	    _nc_disable_period = TRUE;
1151 	    use_extended_names(TRUE);
1152 	    break;
1153 #endif
1154 	case 'd':
1155 	    compare = C_DIFFERENCE;
1156 	    break;
1157 
1158 	case 'e':
1159 	    initdump |= 1;
1160 	    break;
1161 
1162 	case 'E':
1163 	    initdump |= 2;
1164 	    break;
1165 
1166 	case 'c':
1167 	    compare = C_COMMON;
1168 	    break;
1169 
1170 	case 'C':
1171 	    outform = F_TERMCAP;
1172 	    tversion = "BSD";
1173 	    if (sortmode == S_DEFAULT)
1174 		sortmode = S_TERMCAP;
1175 	    break;
1176 
1177 	case 'f':
1178 	    formatted = TRUE;
1179 	    break;
1180 
1181 	case 'G':
1182 	    numbers = 1;
1183 	    break;
1184 
1185 	case 'g':
1186 	    numbers = -1;
1187 	    break;
1188 
1189 	case 'F':
1190 	    filecompare = TRUE;
1191 	    break;
1192 
1193 	case 'I':
1194 	    outform = F_TERMINFO;
1195 	    if (sortmode == S_DEFAULT)
1196 		sortmode = S_VARIABLE;
1197 	    tversion = 0;
1198 	    break;
1199 
1200 	case 'i':
1201 	    init_analyze = TRUE;
1202 	    break;
1203 
1204 	case 'l':
1205 	    outform = F_TERMINFO;
1206 	    break;
1207 
1208 	case 'L':
1209 	    outform = F_VARIABLE;
1210 	    if (sortmode == S_DEFAULT)
1211 		sortmode = S_VARIABLE;
1212 	    break;
1213 
1214 	case 'n':
1215 	    compare = C_NAND;
1216 	    break;
1217 
1218 	case 'p':
1219 	    ignorepads = TRUE;
1220 	    break;
1221 
1222 	case 'q':
1223 	    quiet = TRUE;
1224 	    s_absent = "-";
1225 	    s_cancel = "@";
1226 	    bool_sep = ", ";
1227 	    break;
1228 
1229 	case 'r':
1230 	    tversion = 0;
1231 	    limited = FALSE;
1232 	    break;
1233 
1234 	case 'R':
1235 	    tversion = optarg;
1236 	    break;
1237 
1238 	case 's':
1239 	    if (*optarg == 'd')
1240 		sortmode = S_NOSORT;
1241 	    else if (*optarg == 'i')
1242 		sortmode = S_TERMINFO;
1243 	    else if (*optarg == 'l')
1244 		sortmode = S_VARIABLE;
1245 	    else if (*optarg == 'c')
1246 		sortmode = S_TERMCAP;
1247 	    else {
1248 		(void) fprintf(stderr,
1249 			       "infocmp: unknown sort mode\n");
1250 		return EXIT_FAILURE;
1251 	    }
1252 	    break;
1253 
1254 	case 'u':
1255 	    compare = C_USEALL;
1256 	    break;
1257 
1258 	case 'v':
1259 	    itrace = optarg_to_number();
1260 	    set_trace_level(itrace);
1261 	    break;
1262 
1263 	case 'V':
1264 	    puts(curses_version());
1265 	    ExitProgram(EXIT_SUCCESS);
1266 
1267 	case 'w':
1268 	    mwidth = optarg_to_number();
1269 	    break;
1270 
1271 	case 'A':
1272 	    firstdir = optarg;
1273 	    break;
1274 
1275 	case 'B':
1276 	    restdir = optarg;
1277 	    break;
1278 
1279 	case '1':
1280 	    mwidth = 0;
1281 	    break;
1282 
1283 	case 'T':
1284 	    limited = FALSE;
1285 	    break;
1286 	default:
1287 	    usage();
1288 	}
1289 
1290     /* by default, sort by terminfo name */
1291     if (sortmode == S_DEFAULT)
1292 	sortmode = S_TERMINFO;
1293 
1294     /* set up for display */
1295     dump_init(tversion, outform, sortmode, mwidth, itrace, formatted);
1296 
1297     /* make sure we have at least one terminal name to work with */
1298     if (optind >= argc)
1299 	argv[argc++] = terminal;
1300 
1301     /* if user is after a comparison, make sure we have two entries */
1302     if (compare != C_DEFAULT && optind >= argc - 1)
1303 	argv[argc++] = terminal;
1304 
1305     /* exactly two terminal names with no options means do -d */
1306     if (argc - optind == 2 && compare == C_DEFAULT)
1307 	compare = C_DIFFERENCE;
1308 
1309     if (!filecompare) {
1310 	/* grab the entries */
1311 	termcount = 0;
1312 	for (; optind < argc; optind++) {
1313 	    if (termcount >= MAXTERMS) {
1314 		(void) fprintf(stderr,
1315 			       "infocmp: too many terminal type arguments\n");
1316 		return EXIT_FAILURE;
1317 	    } else {
1318 		const char *directory = termcount ? restdir : firstdir;
1319 		int status;
1320 
1321 		tname[termcount] = argv[optind];
1322 
1323 		if (directory) {
1324 		    (void) snprintf(tfile[termcount],
1325 				    tlen - termcount,
1326 				   "%s/%c/%s",
1327 				   directory,
1328 				   *argv[optind], argv[optind]);
1329 		    if (itrace)
1330 			(void) fprintf(stderr,
1331 				       "infocmp: reading entry %s from file %s\n",
1332 				       argv[optind], tfile[termcount]);
1333 
1334 		    status = _nc_read_file_entry(tfile[termcount],
1335 						 &entries[termcount].tterm);
1336 		} else {
1337 		    if (itrace)
1338 			(void) fprintf(stderr,
1339 				       "infocmp: reading entry %s from system directories %s\n",
1340 				       argv[optind], tname[termcount]);
1341 
1342 		    status = _nc_read_entry(tname[termcount],
1343 					    tfile[termcount],
1344 					    &entries[termcount].tterm);
1345 		    directory = TERMINFO;	/* for error message */
1346 		}
1347 
1348 		if (status <= 0) {
1349 		    (void) fprintf(stderr,
1350 				   "infocmp: couldn't open terminfo file %s.\n",
1351 				   tfile[termcount]);
1352 		    return EXIT_FAILURE;
1353 		}
1354 		repair_acsc(&entries[termcount].tterm);
1355 		termcount++;
1356 	    }
1357 	}
1358 
1359 #if NCURSES_XNAMES
1360 	if (termcount > 1)
1361 	    _nc_align_termtype(&entries[0].tterm, &entries[1].tterm);
1362 #endif
1363 
1364 	/* dump as C initializer for the terminal type */
1365 	if (initdump) {
1366 	    if (initdump & 1)
1367 		dump_termtype(&entries[0].tterm);
1368 	    if (initdump & 2)
1369 		dump_initializers(&entries[0].tterm);
1370 	    ExitProgram(EXIT_SUCCESS);
1371 	}
1372 
1373 	/* analyze the init strings */
1374 	if (init_analyze) {
1375 #undef CUR
1376 #define CUR	entries[0].tterm.
1377 	    analyze_string("is1", init_1string, &entries[0].tterm);
1378 	    analyze_string("is2", init_2string, &entries[0].tterm);
1379 	    analyze_string("is3", init_3string, &entries[0].tterm);
1380 	    analyze_string("rs1", reset_1string, &entries[0].tterm);
1381 	    analyze_string("rs2", reset_2string, &entries[0].tterm);
1382 	    analyze_string("rs3", reset_3string, &entries[0].tterm);
1383 	    analyze_string("smcup", enter_ca_mode, &entries[0].tterm);
1384 	    analyze_string("rmcup", exit_ca_mode, &entries[0].tterm);
1385 #undef CUR
1386 	    ExitProgram(EXIT_SUCCESS);
1387 	}
1388 
1389 	/*
1390 	 * Here's where the real work gets done
1391 	 */
1392 	switch (compare) {
1393 	case C_DEFAULT:
1394 	    if (itrace)
1395 		(void) fprintf(stderr,
1396 			       "infocmp: about to dump %s\n",
1397 			       tname[0]);
1398 	    (void) printf("#\tReconstructed via infocmp from file: %s\n",
1399 			  tfile[0]);
1400 	    len = dump_entry(&entries[0].tterm, limited, numbers, NULL);
1401 	    putchar('\n');
1402 	    if (itrace)
1403 		(void) fprintf(stderr, "infocmp: length %d\n", len);
1404 	    break;
1405 
1406 	case C_DIFFERENCE:
1407 	    if (itrace)
1408 		(void) fprintf(stderr, "infocmp: dumping differences\n");
1409 	    (void) printf("comparing %s to %s.\n", tname[0], tname[1]);
1410 	    compare_entry(compare_predicate, &entries->tterm, quiet);
1411 	    break;
1412 
1413 	case C_COMMON:
1414 	    if (itrace)
1415 		(void) fprintf(stderr,
1416 			       "infocmp: dumping common capabilities\n");
1417 	    (void) printf("comparing %s to %s.\n", tname[0], tname[1]);
1418 	    compare_entry(compare_predicate, &entries->tterm, quiet);
1419 	    break;
1420 
1421 	case C_NAND:
1422 	    if (itrace)
1423 		(void) fprintf(stderr,
1424 			       "infocmp: dumping differences\n");
1425 	    (void) printf("comparing %s to %s.\n", tname[0], tname[1]);
1426 	    compare_entry(compare_predicate, &entries->tterm, quiet);
1427 	    break;
1428 
1429 	case C_USEALL:
1430 	    if (itrace)
1431 		(void) fprintf(stderr, "infocmp: dumping use entry\n");
1432 	    len = dump_entry(&entries[0].tterm, limited, numbers, use_predicate);
1433 	    for (i = 1; i < termcount; i++)
1434 		len += dump_uses(tname[i], !(outform == F_TERMCAP || outform
1435 					     == F_TCONVERR));
1436 	    putchar('\n');
1437 	    if (itrace)
1438 		(void) fprintf(stderr, "infocmp: length %d\n", len);
1439 	    break;
1440 	}
1441     } else if (compare == C_USEALL)
1442 	(void) fprintf(stderr, "Sorry, -u doesn't work with -F\n");
1443     else if (compare == C_DEFAULT)
1444 	(void) fprintf(stderr, "Use `tic -[CI] <file>' for this.\n");
1445     else if (argc - optind != 2)
1446 	(void) fprintf(stderr,
1447 		       "File comparison needs exactly two file arguments.\n");
1448     else
1449 	file_comparison(argc - optind, argv + optind);
1450 
1451     ExitProgram(EXIT_SUCCESS);
1452 }
1453 
1454 /* infocmp.c ends here */
1455