1 /****************************************************************************
2 * Copyright 2018-2024,2025 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-on *
34 ****************************************************************************/
35
36 /*
37 * captoinfo.c
38 *
39 * Provide conversion in both directions between termcap and terminfo.
40 *
41 * cap-to-info --- conversion between termcap and terminfo formats
42 *
43 * The captoinfo() code was swiped from Ross Ridge's mytinfo package,
44 * adapted to fit ncurses by Eric S. Raymond <esr@snark.thyrsus.com>.
45 *
46 * It has just one entry point:
47 *
48 * char *_nc_captoinfo(n, s, parameterized)
49 *
50 * Convert value s for termcap string capability named n into terminfo
51 * format.
52 *
53 * This code recognizes all the standard 4.4BSD %-escapes:
54 *
55 * %% output `%'
56 * %d output value as in printf %d
57 * %2 output value as in printf %2d
58 * %3 output value as in printf %3d
59 * %. output value as in printf %c
60 * %+x add x to value, then do %.
61 * %>xy if value > x then add y, no output
62 * %r reverse order of two parameters, no output
63 * %i increment by one, no output
64 * %n exclusive-or all parameters with 0140 (Datamedia 2500)
65 * %B BCD (16*(value/10)) + (value%10), no output
66 * %D Reverse coding (value - 2*(value%16)), no output (Delta Data).
67 *
68 * Also, %02 and %03 are accepted as synonyms for %2 and %3.
69 *
70 * Besides all the standard termcap escapes, this translator understands
71 * the following extended escapes:
72 *
73 * used by GNU Emacs termcap libraries
74 * %a[+*-/=][cp]x GNU arithmetic.
75 * %m xor the first two parameters by 0177
76 * %b backup to previous parameter
77 * %f skip this parameter
78 *
79 * used by the University of Waterloo (MFCF) termcap libraries
80 * %-x subtract parameter FROM char x and output it as a char
81 * %ax add the character x to parameter
82 *
83 * If #define WATERLOO is on, also enable these translations:
84 *
85 * %sx subtract parameter FROM the character x
86 *
87 * By default, this Waterloo translations are not compiled in, because
88 * the Waterloo %s conflicts with the way terminfo uses %s in strings for
89 * function programming.
90 *
91 * Note the two definitions of %a: the GNU definition is translated if the
92 * characters after the 'a' are valid for it, otherwise the UW definition
93 * is translated.
94 */
95
96 #include <curses.priv.h>
97
98 #include <ctype.h>
99 #include <tic.h>
100
101 MODULE_ID("$Id: captoinfo.c,v 1.109 2025/11/23 20:22:38 tom Exp $")
102
103 #if 0
104 #define DEBUG_THIS(p) DEBUG(9, p)
105 #else
106 #define DEBUG_THIS(p) /* nothing */
107 #endif
108
109 #define MAX_PUSHED 16 /* max # args we can push onto the stack */
110
111 static int stack[MAX_PUSHED]; /* the stack */
112 static int stackptr; /* the next empty place on the stack */
113 static int onstack; /* the top of stack */
114 static int seenm; /* seen a %m */
115 static int seenn; /* seen a %n */
116 static int seenr; /* seen a %r */
117 static int param; /* current parameter */
118 static char *dp; /* pointer to end of the converted string */
119
120 static char *my_string;
121 static size_t my_length;
122
123 static char *
init_string(void)124 init_string(void)
125 /* initialize 'my_string', 'my_length' */
126 {
127 if (my_string == NULL)
128 TYPE_MALLOC(char, my_length = 256, my_string);
129
130 *my_string = '\0';
131 return my_string;
132 }
133
134 static char *
save_string(char * d,const char * const s)135 save_string(char *d, const char *const s)
136 {
137 size_t have = (size_t) (d - my_string);
138 size_t need = have + strlen(s) + 2;
139 if (need > my_length) {
140 my_string = (char *) _nc_doalloc(my_string, my_length = (need + need));
141 if (my_string == NULL)
142 _nc_err_abort(MSG_NO_MEMORY);
143 d = my_string + have;
144 }
145 _nc_STRCPY(d, s, my_length - have);
146 return d + strlen(d);
147 }
148
149 static NCURSES_INLINE char *
save_char(char * s,int c)150 save_char(char *s, int c)
151 {
152 static char temp[2];
153 temp[0] = (char) c;
154 return save_string(s, temp);
155 }
156
157 static void
push(void)158 push(void)
159 /* push onstack on to the stack */
160 {
161 if (stackptr >= MAX_PUSHED)
162 _nc_warning("string too complex to convert");
163 else
164 stack[stackptr++] = onstack;
165 }
166
167 static void
pop(void)168 pop(void)
169 /* pop the top of the stack into onstack */
170 {
171 if (stackptr == 0) {
172 if (onstack == 0)
173 _nc_warning("I'm confused");
174 else
175 onstack = 0;
176 } else
177 onstack = stack[--stackptr];
178 param++;
179 }
180
181 static int
cvtchar(register const char * sp)182 cvtchar(register const char *sp)
183 /* convert a character to a terminfo push */
184 {
185 unsigned char c = 0;
186 int len;
187
188 switch (*sp) {
189 case '\\':
190 switch (*++sp) {
191 case '\'':
192 case '$':
193 case '\\':
194 case '%':
195 c = UChar(*sp);
196 len = 2;
197 break;
198 case '\0':
199 c = '\\';
200 len = 1;
201 break;
202 case '0':
203 case '1':
204 case '2':
205 case '3':
206 len = 1;
207 while (isdigit(UChar(*sp))) {
208 c = UChar(8 * c + (*sp++ - '0'));
209 len++;
210 }
211 break;
212 default:
213 c = UChar(*sp);
214 len = (c != '\0') ? 2 : 1;
215 break;
216 }
217 break;
218 case '^':
219 len = 2;
220 c = UChar(*++sp);
221 if (c == '?') {
222 c = 127;
223 } else if (c == '\0') {
224 len = 1;
225 } else {
226 c &= 0x1f;
227 }
228 break;
229 default:
230 c = UChar(*sp);
231 len = (c != '\0') ? 1 : 0;
232 }
233 if (isgraph(c) && c != ',' && c != '\'' && c != '\\' && c != ':') {
234 dp = save_string(dp, "%\'");
235 dp = save_char(dp, c);
236 dp = save_char(dp, '\'');
237 } else if (c != '\0') {
238 dp = save_string(dp, "%{");
239 if (c > 99)
240 dp = save_char(dp, c / 100 + '0');
241 if (c > 9)
242 dp = save_char(dp, ((int) (c / 10)) % 10 + '0');
243 dp = save_char(dp, c % 10 + '0');
244 dp = save_char(dp, '}');
245 }
246 return len;
247 }
248
249 static void
getparam(int parameter,int n)250 getparam(int parameter, int n)
251 /* push n copies of parameter on the terminfo stack if not already there */
252 {
253 int nn;
254
255 if (seenr) {
256 if (parameter == 1)
257 parameter = 2;
258 else if (parameter == 2)
259 parameter = 1;
260 }
261
262 for (nn = 0; nn < n; ++nn) {
263 dp = save_string(dp, "%p");
264 dp = save_char(dp, '0' + parameter);
265 }
266
267 if (onstack == parameter) {
268 if (n > 1) {
269 _nc_warning("string may not be optimal");
270 dp = save_string(dp, "%Pa");
271 while (n-- > 0) {
272 dp = save_string(dp, "%ga");
273 }
274 }
275 return;
276 }
277 if (onstack != 0)
278 push();
279
280 onstack = parameter;
281
282 if (seenn && parameter < 3) {
283 dp = save_string(dp, "%{96}%^");
284 }
285
286 if (seenm && parameter < 3) {
287 dp = save_string(dp, "%{127}%^");
288 }
289 }
290
291 /*
292 * Convert a termcap string to terminfo format.
293 * 'cap' is the relevant terminfo capability index.
294 * 's' is the string value of the capability.
295 * 'parameterized' tells what type of translations to do:
296 * % translations if 1
297 * pad translations if >=0
298 */
299 NCURSES_EXPORT(char *)
_nc_captoinfo(const char * cap,const char * s,int const parameterized)300 _nc_captoinfo(const char *cap, const char *s, int const parameterized)
301 {
302 const char *capstart;
303
304 stackptr = 0;
305 onstack = 0;
306 seenm = 0;
307 seenn = 0;
308 seenr = 0;
309 param = 1;
310
311 DEBUG_THIS(("_nc_captoinfo params %d, %s", parameterized, s));
312
313 dp = init_string();
314
315 /* skip the initial padding (if we haven't been told not to) */
316 capstart = NULL;
317 if (s == NULL)
318 s = "";
319 if (parameterized >= 0 && isdigit(UChar(*s)))
320 for (capstart = s; *s != '\0'; s++)
321 if (!(isdigit(UChar(*s)) || *s == '*' || *s == '.'))
322 break;
323
324 while (*s != '\0') {
325 switch (*s) {
326 case '%':
327 s++;
328 if (parameterized < 1) {
329 dp = save_char(dp, '%');
330 break;
331 }
332 switch (*s++) {
333 case '%':
334 dp = save_string(dp, "%%");
335 break;
336 case 'r':
337 if (seenr++ == 1) {
338 _nc_warning("saw %%r twice in %s", cap);
339 }
340 break;
341 case 'm':
342 if (seenm++ == 1) {
343 _nc_warning("saw %%m twice in %s", cap);
344 }
345 break;
346 case 'n':
347 if (seenn++ == 1) {
348 _nc_warning("saw %%n twice in %s", cap);
349 }
350 break;
351 case 'i':
352 dp = save_string(dp, "%i");
353 break;
354 case '6':
355 case 'B':
356 getparam(param, 1);
357 dp = save_string(dp, "%{10}%/%{16}%*");
358 getparam(param, 1);
359 dp = save_string(dp, "%{10}%m%+");
360 break;
361 case '8':
362 case 'D':
363 getparam(param, 2);
364 dp = save_string(dp, "%{2}%*%-");
365 break;
366 case '>':
367 /* %?%{x}%>%t%{y}%+%; */
368 if (s[0] && s[1]) {
369 getparam(param, 2);
370 dp = save_string(dp, "%?");
371 s += cvtchar(s);
372 dp = save_string(dp, "%>%t");
373 s += cvtchar(s);
374 dp = save_string(dp, "%+%;");
375 } else {
376 _nc_warning("expected two characters after %%>");
377 dp = save_string(dp, "%>");
378 }
379 break;
380 case 'a':
381 if ((*s == '=' || *s == '+' || *s == '-'
382 || *s == '*' || *s == '/')
383 && (s[1] == 'p' || s[1] == 'c')
384 && s[2] != '\0') {
385 int l;
386 l = 2;
387 if (*s != '=')
388 getparam(param, 1);
389 if (s[1] == 'p') {
390 getparam(param + s[2] - '@', 1);
391 if (param != onstack) {
392 pop();
393 param--;
394 }
395 l++;
396 } else
397 l += cvtchar(s + 2);
398 switch (*s) {
399 case '+':
400 dp = save_string(dp, "%+");
401 break;
402 case '-':
403 dp = save_string(dp, "%-");
404 break;
405 case '*':
406 dp = save_string(dp, "%*");
407 break;
408 case '/':
409 dp = save_string(dp, "%/");
410 break;
411 case '=':
412 if (seenr) {
413 if (param == 1)
414 onstack = 2;
415 else if (param == 2)
416 onstack = 1;
417 else
418 onstack = param;
419 } else
420 onstack = param;
421 break;
422 }
423 s += l;
424 break;
425 }
426 getparam(param, 1);
427 s += cvtchar(s);
428 dp = save_string(dp, "%+");
429 break;
430 case '+':
431 getparam(param, 1);
432 s += cvtchar(s);
433 dp = save_string(dp, "%+%c");
434 pop();
435 break;
436 case 's':
437 #ifdef WATERLOO
438 s += cvtchar(s);
439 getparam(param, 1);
440 dp = save_string(dp, "%-");
441 #else
442 getparam(param, 1);
443 dp = save_string(dp, "%s");
444 pop();
445 #endif /* WATERLOO */
446 break;
447 case '-':
448 s += cvtchar(s);
449 getparam(param, 1);
450 dp = save_string(dp, "%-%c");
451 pop();
452 break;
453 case '.':
454 getparam(param, 1);
455 dp = save_string(dp, "%c");
456 pop();
457 break;
458 case '0': /* not clear any of the historical termcaps did this */
459 if (*s == '3') {
460 ++s;
461 goto see03;
462 }
463 if (*s == '2') {
464 ++s;
465 goto see02;
466 }
467 goto invalid;
468 case '2':
469 see02:
470 getparam(param, 1);
471 dp = save_string(dp, "%2d");
472 pop();
473 break;
474 case '3':
475 see03:
476 getparam(param, 1);
477 dp = save_string(dp, "%3d");
478 pop();
479 break;
480 case 'd':
481 getparam(param, 1);
482 dp = save_string(dp, "%d");
483 pop();
484 break;
485 case 'f':
486 param++;
487 break;
488 case 'b':
489 param--;
490 break;
491 case '\\':
492 dp = save_string(dp, "%\\");
493 break;
494 default:
495 invalid:
496 dp = save_char(dp, '%');
497 s--;
498 _nc_warning("unknown %% code %s (%#x) in %s",
499 unctrl((chtype) *s), UChar(*s), cap);
500 break;
501 }
502 break;
503 default:
504 if (*s != '\0')
505 dp = save_char(dp, *s++);
506 break;
507 }
508 }
509
510 /*
511 * Now, if we stripped off some leading padding, add it at the end
512 * of the string as mandatory padding.
513 */
514 if (capstart) {
515 dp = save_string(dp, "$<");
516 for (s = capstart; *s != '\0'; s++)
517 if (isdigit(UChar(*s)) || *s == '*' || *s == '.')
518 dp = save_char(dp, *s);
519 else
520 break;
521 dp = save_string(dp, "/>");
522 }
523
524 (void) save_char(dp, '\0');
525
526 DEBUG_THIS(("... _nc_captoinfo %s", NonNull(my_string)));
527
528 return (my_string);
529 }
530
531 /*
532 * Check for an expression that corresponds to "%B" (BCD):
533 * (parameter / 10) * 16 + (parameter % 10)
534 */
535 static int
bcd_expression(const char * str)536 bcd_expression(const char *str)
537 {
538 static const char fmt[] = "%%p%c%%{10}%%/%%{16}%%*%%p%c%%{10}%%m%%+";
539 int len = 0;
540 char ch1, ch2;
541
542 if (sscanf(str, fmt, &ch1, &ch2) == 2
543 && isdigit(UChar(ch1))
544 && isdigit(UChar(ch2))
545 && (ch1 == ch2)) {
546 len = 28;
547 #ifndef NDEBUG
548 {
549 char buffer[80];
550 int tst;
551 _nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer)) fmt, ch1, ch2);
552 tst = (int) strlen(buffer) - 1;
553 assert(len == tst);
554 }
555 #endif
556 }
557 return len;
558 }
559
560 static char *
save_tc_char(char * bufptr,int c1)561 save_tc_char(char *bufptr, int c1)
562 {
563 if (is7bits(c1) && isprint(c1)) {
564 if (c1 == ':' || c1 == '\\')
565 bufptr = save_char(bufptr, '\\');
566 bufptr = save_char(bufptr, c1);
567 } else {
568 char temp[80];
569
570 if (c1 == (c1 & 0x1f)) { /* iscntrl() returns T on 255 */
571 _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
572 "%.20s", unctrl((chtype) c1));
573 } else {
574 _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
575 "\\%03o", c1);
576 }
577 bufptr = save_string(bufptr, temp);
578 }
579 return bufptr;
580 }
581
582 static char *
save_tc_inequality(char * bufptr,int c1,int c2)583 save_tc_inequality(char *bufptr, int c1, int c2)
584 {
585 bufptr = save_string(bufptr, "%>");
586 bufptr = save_tc_char(bufptr, c1);
587 bufptr = save_tc_char(bufptr, c2);
588 return bufptr;
589 }
590
591 /*
592 * info-to-cap --- conversion between terminfo and termcap formats
593 *
594 * Here are the capabilities infotocap assumes it can translate to:
595 *
596 * %% output `%'
597 * %d output value as in printf %d
598 * %2 output value as in printf %2d
599 * %3 output value as in printf %3d
600 * %. output value as in printf %c
601 * %+c add character c to value, then do %.
602 * %>xy if value > x then add y, no output
603 * %r reverse order of two parameters, no output
604 * %i increment by one, no output
605 * %n exclusive-or all parameters with 0140 (Datamedia 2500)
606 * %B BCD (16*(value/10)) + (value%10), no output
607 * %D Reverse coding (value - 2*(value%16)), no output (Delta Data).
608 * %m exclusive-or all parameters with 0177 (not in 4.4BSD)
609 */
610
611 #define octal_fixup(n, c) fixups[n].ch = ((fixups[n].ch << 3) | ((c) - '0'))
612
613 /*
614 * Convert a terminfo string to termcap format. Parameters are as in
615 * _nc_captoinfo().
616 */
617 NCURSES_EXPORT(char *)
_nc_infotocap(const char * cap GCC_UNUSED,const char * str,int const parameterized)618 _nc_infotocap(const char *cap GCC_UNUSED, const char *str, int const parameterized)
619 {
620 int seenone = 0, seentwo = 0, saw_m = 0, saw_n = 0;
621 const char *padding;
622 const char *trimmed = NULL;
623 int in0, in1, in2;
624 char ch1 = 0, ch2 = 0;
625 char *bufptr = init_string();
626 char octal[4];
627 int len;
628 int digits;
629 bool syntax_error = FALSE;
630 int myfix = 0;
631 struct {
632 int ch;
633 int offset;
634 } fixups[MAX_TC_FIXUPS];
635
636 DEBUG_THIS(("_nc_infotocap %s params %d, %s",
637 _nc_strict_bsd ? "strict" : "loose",
638 parameterized,
639 _nc_visbuf(str)));
640
641 /* we may have to move some trailing mandatory padding up front */
642 padding = str + strlen(str) - 1;
643 if (padding > str && *padding == '>') {
644 if (padding > (str + 1) && *--padding == '/')
645 --padding;
646 while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
647 padding--;
648 if (padding > str && *padding == '<' && *--padding == '$')
649 trimmed = padding;
650 padding += 2;
651
652 while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
653 bufptr = save_char(bufptr, *padding++);
654 }
655
656 for (; !syntax_error &&
657 *str &&
658 ((trimmed == NULL) || (str < trimmed)); str++) {
659 int c1, c2;
660 char *cp = NULL;
661
662 if (str[0] == '^') {
663 if (str[1] == '\0' || (str + 1) == trimmed) {
664 bufptr = save_string(bufptr, "\\136");
665 ++str;
666 } else if (str[1] == '?') {
667 /*
668 * Although the 4.3BSD termcap file has an instance of "kb=^?",
669 * that appears to be just cut/paste since neither 4.3BSD nor
670 * 4.4BSD termcap interprets "^?" as DEL.
671 */
672 bufptr = save_string(bufptr, "\\177");
673 ++str;
674 } else {
675 bufptr = save_char(bufptr, *str++);
676 bufptr = save_char(bufptr, *str);
677 }
678 } else if (str[0] == ':') {
679 bufptr = save_char(bufptr, '\\');
680 bufptr = save_char(bufptr, '0');
681 bufptr = save_char(bufptr, '7');
682 bufptr = save_char(bufptr, '2');
683 } else if (str[0] == '\\') {
684 if (str[1] == '\0' || (str + 1) == trimmed) {
685 bufptr = save_string(bufptr, "\\134");
686 ++str;
687 } else if (str[1] == '^') {
688 bufptr = save_string(bufptr, "\\136");
689 ++str;
690 } else if (str[1] == ',') {
691 bufptr = save_char(bufptr, *++str);
692 } else {
693 int xx1;
694
695 bufptr = save_char(bufptr, *str++);
696 xx1 = *str;
697 if (_nc_strict_bsd) {
698
699 if (isoctal(UChar(xx1))) {
700 int pad = 0;
701 int xx2;
702 int fix = 0;
703
704 if (!isoctal(UChar(str[1])))
705 pad = 2;
706 else if (str[1] && !isoctal(UChar(str[2])))
707 pad = 1;
708
709 /*
710 * Test for "\0", "\00" or "\000" and transform those
711 * into "\200".
712 */
713 if (xx1 == '0'
714 && ((pad == 2) || (str[1] == '0'))
715 && ((pad >= 1) || (str[2] == '0'))) {
716 xx2 = '2';
717 } else {
718 xx2 = '0';
719 pad = 0; /* FIXME - optionally pad to 3 digits */
720 }
721 if (myfix < MAX_TC_FIXUPS) {
722 fix = 3 - pad;
723 fixups[myfix].ch = 0;
724 fixups[myfix].offset = (int) (bufptr
725 - my_string
726 - 1);
727 }
728 while (pad-- > 0) {
729 bufptr = save_char(bufptr, xx2);
730 if (myfix < MAX_TC_FIXUPS) {
731 fixups[myfix].ch <<= 3;
732 fixups[myfix].ch |= (xx2 - '0');
733 }
734 xx2 = '0';
735 }
736 if (myfix < MAX_TC_FIXUPS) {
737 int n;
738 for (n = 0; n < fix; ++n) {
739 fixups[myfix].ch <<= 3;
740 fixups[myfix].ch |= (str[n] - '0');
741 }
742 if (fixups[myfix].ch < 32) {
743 ++myfix;
744 }
745 }
746 } else if (strchr("E\\nrtbf", xx1) == NULL) {
747 switch (xx1) {
748 case 'e':
749 xx1 = 'E';
750 break;
751 case 'l':
752 xx1 = 'n';
753 break;
754 case 's':
755 bufptr = save_char(bufptr, '0');
756 bufptr = save_char(bufptr, '4');
757 xx1 = '0';
758 break;
759 case ':':
760 /*
761 * Note: termcap documentation claims that ":"
762 * must be escaped as "\072", however the
763 * documentation is incorrect - read the code.
764 * The replacement does not work reliably,
765 * so the advice is not helpful.
766 */
767 bufptr = save_char(bufptr, '0');
768 bufptr = save_char(bufptr, '7');
769 xx1 = '2';
770 break;
771 default:
772 /* should not happen, but handle this anyway */
773 _nc_SPRINTF(octal, _nc_SLIMIT(sizeof(octal))
774 "%03o", UChar(xx1));
775 bufptr = save_char(bufptr, octal[0]);
776 bufptr = save_char(bufptr, octal[1]);
777 xx1 = octal[2];
778 break;
779 }
780 }
781 } else {
782 if (myfix < MAX_TC_FIXUPS && isoctal(UChar(xx1))) {
783 bool will_fix = TRUE;
784 int n;
785
786 fixups[myfix].ch = 0;
787 fixups[myfix].offset = (int) (bufptr - my_string - 1);
788 for (n = 0; n < 3; ++n) {
789 if (isoctal(str[n])) {
790 octal_fixup(myfix, str[n]);
791 } else {
792 will_fix = FALSE;
793 break;
794 }
795 }
796 if (will_fix && (fixups[myfix].ch < 32))
797 ++myfix;
798 }
799 }
800 bufptr = save_char(bufptr, xx1);
801 }
802 } else if (str[0] == '$' && str[1] == '<') { /* discard padding */
803 str += 2;
804 while (isdigit(UChar(*str))
805 || *str == '.'
806 || *str == '*'
807 || *str == '/'
808 || *str == '>')
809 str++;
810 --str;
811 } else if (sscanf(str,
812 "[%%?%%p1%%{8}%%<%%t%d%%p1%%d%%e%%p1%%{16}%%<%%t%d%%p1%%{8}%%-%%d%%e%d;5;%%p1%%d%%;m",
813 &in0, &in1, &in2) == 3
814 && ((in0 == 4 && in1 == 10 && in2 == 48)
815 || (in0 == 3 && in1 == 9 && in2 == 38))) {
816 /* dumb-down an optimized case from xterm-256color for termcap */
817 if ((str = strstr(str, ";m")) == NULL)
818 break; /* cannot happen */
819 ++str;
820 if (in2 == 48) {
821 bufptr = save_string(bufptr, "[48;5;%dm");
822 } else {
823 bufptr = save_string(bufptr, "[38;5;%dm");
824 }
825 } else if (str[0] == '%' && str[1] == '%') { /* escaped '%' */
826 bufptr = save_string(bufptr, "%%");
827 ++str;
828 } else if (*str != '%' || (parameterized < 1)) {
829 bufptr = save_char(bufptr, *str);
830 } else if (sscanf(str, "%%?%%{%d}%%>%%t%%{%d}%%+%%;", &c1, &c2) == 2) {
831 str = strchr(str, ';');
832 bufptr = save_tc_inequality(bufptr, c1, c2);
833 } else if (sscanf(str, "%%?%%{%d}%%>%%t%%'%c'%%+%%;", &c1, &ch2) == 2) {
834 str = strchr(str, ';');
835 bufptr = save_tc_inequality(bufptr, c1, ch2);
836 } else if (sscanf(str, "%%?%%'%c'%%>%%t%%{%d}%%+%%;", &ch1, &c2) == 2) {
837 str = strchr(str, ';');
838 bufptr = save_tc_inequality(bufptr, ch1, c2);
839 } else if (sscanf(str, "%%?%%'%c'%%>%%t%%'%c'%%+%%;", &ch1, &ch2) == 2) {
840 str = strchr(str, ';');
841 bufptr = save_tc_inequality(bufptr, ch1, ch2);
842 } else if ((len = bcd_expression(str)) != 0) {
843 str += len;
844 bufptr = save_string(bufptr, "%B");
845 } else if ((sscanf(str, "%%{%d}%%+%%%c", &c1, &ch2) == 2
846 || sscanf(str, "%%'%c'%%+%%%c", &ch1, &ch2) == 2)
847 && ch2 == 'c'
848 && (cp = strchr(str, '+'))) {
849 str = cp + 2;
850 bufptr = save_string(bufptr, "%+");
851
852 if (ch1)
853 c1 = ch1;
854 bufptr = save_tc_char(bufptr, c1);
855 }
856 /* FIXME: this "works" for 'delta' */
857 else if (strncmp(str, "%{2}%*%-", (size_t) 8) == 0) {
858 str += 7;
859 bufptr = save_string(bufptr, "%D");
860 } else if (strncmp(str, "%{96}%^", (size_t) 7) == 0) {
861 str += 6;
862 if (saw_m++ == 0) {
863 bufptr = save_string(bufptr, "%n");
864 }
865 } else if (strncmp(str, "%{127}%^", (size_t) 8) == 0) {
866 str += 7;
867 if (saw_n++ == 0) {
868 bufptr = save_string(bufptr, "%m");
869 }
870 } else { /* cm-style format element */
871 str++;
872 switch (*str) {
873 case '%':
874 bufptr = save_char(bufptr, '%');
875 break;
876
877 case '0':
878 case '1':
879 case '2':
880 case '3':
881 case '4':
882 case '5':
883 case '6':
884 case '7':
885 case '8':
886 case '9':
887 bufptr = save_char(bufptr, '%');
888 ch1 = 0;
889 ch2 = 0;
890 digits = 0;
891 while (isdigit(UChar(*str))) {
892 if (++digits > 2) {
893 syntax_error = TRUE;
894 break;
895 }
896 ch2 = ch1;
897 ch1 = *str++;
898 if (digits == 2 && ch2 != '0') {
899 syntax_error = TRUE;
900 break;
901 } else if (_nc_strict_bsd) {
902 if (ch1 > '3') {
903 syntax_error = TRUE;
904 break;
905 }
906 } else {
907 bufptr = save_char(bufptr, ch1);
908 }
909 }
910 if (syntax_error)
911 break;
912 /*
913 * Convert %02 to %2 and %03 to %3
914 */
915 if (ch2 == '0' && !_nc_strict_bsd) {
916 ch2 = 0;
917 bufptr[-2] = bufptr[-1];
918 *--bufptr = 0;
919 }
920 if (_nc_strict_bsd) {
921 if (ch2 != 0 && ch2 != '0') {
922 syntax_error = TRUE;
923 } else if (ch1 < '2') {
924 ch1 = 'd';
925 }
926 bufptr = save_char(bufptr, ch1);
927 }
928 if (strchr("oxX.", *str)) {
929 syntax_error = TRUE; /* termcap doesn't have octal, hex */
930 }
931 break;
932
933 case 'd':
934 bufptr = save_string(bufptr, "%d");
935 break;
936
937 case 'c':
938 bufptr = save_string(bufptr, "%.");
939 break;
940
941 /*
942 * %s isn't in termcap, but it is convenient to pass it through
943 * so we can represent things like terminfo pfkey strings in
944 * termcap notation.
945 */
946 case 's':
947 if (_nc_strict_bsd) {
948 syntax_error = TRUE;
949 } else {
950 bufptr = save_string(bufptr, "%s");
951 }
952 break;
953
954 case 'p':
955 str++;
956 if (*str == '1')
957 seenone = 1;
958 else if (*str == '2') {
959 if (!seenone && !seentwo) {
960 bufptr = save_string(bufptr, "%r");
961 seentwo++;
962 }
963 } else if (*str >= '3') {
964 syntax_error = TRUE;
965 }
966 break;
967
968 case 'i':
969 bufptr = save_string(bufptr, "%i");
970 break;
971
972 default:
973 bufptr = save_char(bufptr, *str);
974 syntax_error = TRUE;
975 break;
976 } /* endswitch (*str) */
977 } /* endelse (*str == '%') */
978
979 /*
980 * 'str' always points to the end of what was scanned in this step,
981 * but that may not be the end of the string.
982 */
983 assert(str != NULL);
984 if (str == NULL || *str == '\0')
985 break;
986
987 } /* endwhile (*str) */
988
989 if (!syntax_error &&
990 myfix > 0 &&
991 ((int) strlen(my_string) - (4 * myfix)) < MIN_TC_FIXUPS) {
992 while (--myfix >= 0) {
993 char *p = fixups[myfix].offset + my_string;
994 *p++ = '^';
995 *p++ = (char) (fixups[myfix].ch | '@');
996 while ((p[0] = p[2]) != '\0') {
997 ++p;
998 }
999 }
1000 }
1001
1002 DEBUG_THIS(("... _nc_infotocap %s",
1003 syntax_error
1004 ? "<ERR>"
1005 : _nc_visbuf(my_string)));
1006
1007 return (syntax_error ? NULL : my_string);
1008 }
1009
1010 #ifdef MAIN
1011
1012 int curr_line;
1013
1014 int
main(int argc,char * argv[])1015 main(int argc, char *argv[])
1016 {
1017 int c, tc = FALSE;
1018
1019 while ((c = getopt(argc, argv, "c")) != EOF)
1020 switch (c) {
1021 case 'c':
1022 tc = TRUE;
1023 break;
1024 }
1025
1026 curr_line = 0;
1027 for (;;) {
1028 char buf[BUFSIZ];
1029
1030 ++curr_line;
1031 if (fgets(buf, sizeof(buf), stdin) == NULL)
1032 break;
1033 buf[strlen(buf) - 1] = '\0';
1034 _nc_set_source(buf);
1035
1036 if (tc) {
1037 char *cp = _nc_infotocap("to termcap", buf, 1);
1038
1039 if (cp)
1040 (void) fputs(cp, stdout);
1041 } else
1042 (void) fputs(_nc_captoinfo("to terminfo", buf, 1), stdout);
1043 (void) putchar('\n');
1044 }
1045 return (0);
1046 }
1047 #endif /* MAIN */
1048
1049 #if NO_LEAKS
1050 NCURSES_EXPORT(void)
_nc_captoinfo_leaks(void)1051 _nc_captoinfo_leaks(void)
1052 {
1053 if (my_string != NULL) {
1054 FreeAndNull(my_string);
1055 }
1056 my_length = 0;
1057 }
1058 #endif
1059