1 /****************************************************************************
2 * Copyright 2018-2019,2020 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-on *
34 ****************************************************************************/
35
36 /*
37 * 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 1.98 2020/02/02 23:34:34 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 == 0)
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 == 0)
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 c = UChar(*++sp);
220 if (c == '?')
221 c = 127;
222 else
223 c &= 0x1f;
224 len = 2;
225 break;
226 default:
227 c = UChar(*sp);
228 len = (c != '\0') ? 1 : 0;
229 }
230 if (isgraph(c) && c != ',' && c != '\'' && c != '\\' && c != ':') {
231 dp = save_string(dp, "%\'");
232 dp = save_char(dp, c);
233 dp = save_char(dp, '\'');
234 } else if (c != '\0') {
235 dp = save_string(dp, "%{");
236 if (c > 99)
237 dp = save_char(dp, c / 100 + '0');
238 if (c > 9)
239 dp = save_char(dp, ((int) (c / 10)) % 10 + '0');
240 dp = save_char(dp, c % 10 + '0');
241 dp = save_char(dp, '}');
242 }
243 return len;
244 }
245
246 static void
getparm(int parm,int n)247 getparm(int parm, int n)
248 /* push n copies of param on the terminfo stack if not already there */
249 {
250 int nn;
251
252 if (seenr) {
253 if (parm == 1)
254 parm = 2;
255 else if (parm == 2)
256 parm = 1;
257 }
258
259 for (nn = 0; nn < n; ++nn) {
260 dp = save_string(dp, "%p");
261 dp = save_char(dp, '0' + parm);
262 }
263
264 if (onstack == parm) {
265 if (n > 1) {
266 _nc_warning("string may not be optimal");
267 dp = save_string(dp, "%Pa");
268 while (n-- > 0) {
269 dp = save_string(dp, "%ga");
270 }
271 }
272 return;
273 }
274 if (onstack != 0)
275 push();
276
277 onstack = parm;
278
279 if (seenn && parm < 3) {
280 dp = save_string(dp, "%{96}%^");
281 }
282
283 if (seenm && parm < 3) {
284 dp = save_string(dp, "%{127}%^");
285 }
286 }
287
288 /*
289 * Convert a termcap string to terminfo format.
290 * 'cap' is the relevant terminfo capability index.
291 * 's' is the string value of the capability.
292 * 'parameterized' tells what type of translations to do:
293 * % translations if 1
294 * pad translations if >=0
295 */
296 NCURSES_EXPORT(char *)
_nc_captoinfo(const char * cap,const char * s,int const parameterized)297 _nc_captoinfo(const char *cap, const char *s, int const parameterized)
298 {
299 const char *capstart;
300
301 stackptr = 0;
302 onstack = 0;
303 seenm = 0;
304 seenn = 0;
305 seenr = 0;
306 param = 1;
307
308 DEBUG_THIS(("_nc_captoinfo params %d, %s", parameterized, s));
309
310 dp = init_string();
311
312 /* skip the initial padding (if we haven't been told not to) */
313 capstart = 0;
314 if (s == 0)
315 s = "";
316 if (parameterized >= 0 && isdigit(UChar(*s)))
317 for (capstart = s; *s != '\0'; s++)
318 if (!(isdigit(UChar(*s)) || *s == '*' || *s == '.'))
319 break;
320
321 while (*s != '\0') {
322 switch (*s) {
323 case '%':
324 s++;
325 if (parameterized < 1) {
326 dp = save_char(dp, '%');
327 break;
328 }
329 switch (*s++) {
330 case '%':
331 dp = save_string(dp, "%%");
332 break;
333 case 'r':
334 if (seenr++ == 1) {
335 _nc_warning("saw %%r twice in %s", cap);
336 }
337 break;
338 case 'm':
339 if (seenm++ == 1) {
340 _nc_warning("saw %%m twice in %s", cap);
341 }
342 break;
343 case 'n':
344 if (seenn++ == 1) {
345 _nc_warning("saw %%n twice in %s", cap);
346 }
347 break;
348 case 'i':
349 dp = save_string(dp, "%i");
350 break;
351 case '6':
352 case 'B':
353 getparm(param, 1);
354 dp = save_string(dp, "%{10}%/%{16}%*");
355 getparm(param, 1);
356 dp = save_string(dp, "%{10}%m%+");
357 break;
358 case '8':
359 case 'D':
360 getparm(param, 2);
361 dp = save_string(dp, "%{2}%*%-");
362 break;
363 case '>':
364 /* %?%{x}%>%t%{y}%+%; */
365 if (s[0] && s[1]) {
366 getparm(param, 2);
367 dp = save_string(dp, "%?");
368 s += cvtchar(s);
369 dp = save_string(dp, "%>%t");
370 s += cvtchar(s);
371 dp = save_string(dp, "%+%;");
372 } else {
373 _nc_warning("expected two characters after %%>");
374 dp = save_string(dp, "%>");
375 }
376 break;
377 case 'a':
378 if ((*s == '=' || *s == '+' || *s == '-'
379 || *s == '*' || *s == '/')
380 && (s[1] == 'p' || s[1] == 'c')
381 && s[2] != '\0') {
382 int l;
383 l = 2;
384 if (*s != '=')
385 getparm(param, 1);
386 if (s[1] == 'p') {
387 getparm(param + s[2] - '@', 1);
388 if (param != onstack) {
389 pop();
390 param--;
391 }
392 l++;
393 } else
394 l += cvtchar(s + 2);
395 switch (*s) {
396 case '+':
397 dp = save_string(dp, "%+");
398 break;
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 if (seenr) {
410 if (param == 1)
411 onstack = 2;
412 else if (param == 2)
413 onstack = 1;
414 else
415 onstack = param;
416 } else
417 onstack = param;
418 break;
419 }
420 s += l;
421 break;
422 }
423 getparm(param, 1);
424 s += cvtchar(s);
425 dp = save_string(dp, "%+");
426 break;
427 case '+':
428 getparm(param, 1);
429 s += cvtchar(s);
430 dp = save_string(dp, "%+%c");
431 pop();
432 break;
433 case 's':
434 #ifdef WATERLOO
435 s += cvtchar(s);
436 getparm(param, 1);
437 dp = save_string(dp, "%-");
438 #else
439 getparm(param, 1);
440 dp = save_string(dp, "%s");
441 pop();
442 #endif /* WATERLOO */
443 break;
444 case '-':
445 s += cvtchar(s);
446 getparm(param, 1);
447 dp = save_string(dp, "%-%c");
448 pop();
449 break;
450 case '.':
451 getparm(param, 1);
452 dp = save_string(dp, "%c");
453 pop();
454 break;
455 case '0': /* not clear any of the historical termcaps did this */
456 if (*s == '3') {
457 ++s;
458 goto see03;
459 }
460 if (*s == '2') {
461 ++s;
462 goto see02;
463 }
464 goto invalid;
465 case '2':
466 see02:
467 getparm(param, 1);
468 dp = save_string(dp, "%2d");
469 pop();
470 break;
471 case '3':
472 see03:
473 getparm(param, 1);
474 dp = save_string(dp, "%3d");
475 pop();
476 break;
477 case 'd':
478 getparm(param, 1);
479 dp = save_string(dp, "%d");
480 pop();
481 break;
482 case 'f':
483 param++;
484 break;
485 case 'b':
486 param--;
487 break;
488 case '\\':
489 dp = save_string(dp, "%\\");
490 break;
491 default:
492 invalid:
493 dp = save_char(dp, '%');
494 s--;
495 _nc_warning("unknown %% code %s (%#x) in %s",
496 unctrl((chtype) *s), UChar(*s), cap);
497 break;
498 }
499 break;
500 default:
501 if (*s != '\0')
502 dp = save_char(dp, *s++);
503 break;
504 }
505 }
506
507 /*
508 * Now, if we stripped off some leading padding, add it at the end
509 * of the string as mandatory padding.
510 */
511 if (capstart) {
512 dp = save_string(dp, "$<");
513 for (s = capstart; *s != '\0'; s++)
514 if (isdigit(UChar(*s)) || *s == '*' || *s == '.')
515 dp = save_char(dp, *s);
516 else
517 break;
518 dp = save_string(dp, "/>");
519 }
520
521 (void) save_char(dp, '\0');
522
523 DEBUG_THIS(("... _nc_captoinfo %s", NonNull(my_string)));
524
525 return (my_string);
526 }
527
528 /*
529 * Check for an expression that corresponds to "%B" (BCD):
530 * (parameter / 10) * 16 + (parameter % 10)
531 */
532 static int
bcd_expression(const char * str)533 bcd_expression(const char *str)
534 {
535 /* leave this non-const for HPUX */
536 static char fmt[] = "%%p%c%%{10}%%/%%{16}%%*%%p%c%%{10}%%m%%+";
537 int len = 0;
538 char ch1, ch2;
539
540 if (sscanf(str, fmt, &ch1, &ch2) == 2
541 && isdigit(UChar(ch1))
542 && isdigit(UChar(ch2))
543 && (ch1 == ch2)) {
544 len = 28;
545 #ifndef NDEBUG
546 {
547 char buffer[80];
548 int tst;
549 _nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer)) fmt, ch1, ch2);
550 tst = strlen(buffer) - 1;
551 assert(len == tst);
552 }
553 #endif
554 }
555 return len;
556 }
557
558 static char *
save_tc_char(char * bufptr,int c1)559 save_tc_char(char *bufptr, int c1)
560 {
561 if (is7bits(c1) && isprint(c1)) {
562 if (c1 == ':' || c1 == '\\')
563 bufptr = save_char(bufptr, '\\');
564 bufptr = save_char(bufptr, c1);
565 } else {
566 char temp[80];
567
568 if (c1 == (c1 & 0x1f)) { /* iscntrl() returns T on 255 */
569 _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
570 "%.20s", unctrl((chtype) c1));
571 } else {
572 _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
573 "\\%03o", c1);
574 }
575 bufptr = save_string(bufptr, temp);
576 }
577 return bufptr;
578 }
579
580 static char *
save_tc_inequality(char * bufptr,int c1,int c2)581 save_tc_inequality(char *bufptr, int c1, int c2)
582 {
583 bufptr = save_string(bufptr, "%>");
584 bufptr = save_tc_char(bufptr, c1);
585 bufptr = save_tc_char(bufptr, c2);
586 return bufptr;
587 }
588
589 /*
590 * info-to-cap --- conversion between terminfo and termcap formats
591 *
592 * Here are the capabilities infotocap assumes it can translate to:
593 *
594 * %% output `%'
595 * %d output value as in printf %d
596 * %2 output value as in printf %2d
597 * %3 output value as in printf %3d
598 * %. output value as in printf %c
599 * %+c add character c to value, then do %.
600 * %>xy if value > x then add y, no output
601 * %r reverse order of two parameters, no output
602 * %i increment by one, no output
603 * %n exclusive-or all parameters with 0140 (Datamedia 2500)
604 * %B BCD (16*(value/10)) + (value%10), no output
605 * %D Reverse coding (value - 2*(value%16)), no output (Delta Data).
606 * %m exclusive-or all parameters with 0177 (not in 4.4BSD)
607 */
608
609 #define octal_fixup(n, c) fixups[n].ch = ((fixups[n].ch << 3) | ((c) - '0'))
610
611 /*
612 * Convert a terminfo string to termcap format. Parameters are as in
613 * _nc_captoinfo().
614 */
615 NCURSES_EXPORT(char *)
_nc_infotocap(const char * cap GCC_UNUSED,const char * str,int const parameterized)616 _nc_infotocap(const char *cap GCC_UNUSED, const char *str, int const parameterized)
617 {
618 int seenone = 0, seentwo = 0, saw_m = 0, saw_n = 0;
619 const char *padding;
620 const char *trimmed = 0;
621 int in0, in1, in2;
622 char ch1 = 0, ch2 = 0;
623 char *bufptr = init_string();
624 char octal[4];
625 int len;
626 int digits;
627 bool syntax_error = FALSE;
628 int myfix = 0;
629 struct {
630 int ch;
631 int offset;
632 } fixups[MAX_TC_FIXUPS];
633
634 DEBUG_THIS(("_nc_infotocap params %d, %s", parameterized, str));
635
636 /* we may have to move some trailing mandatory padding up front */
637 padding = str + strlen(str) - 1;
638 if (padding > str && *padding == '>') {
639 if (*--padding == '/')
640 --padding;
641 while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
642 padding--;
643 if (padding > str && *padding == '<' && *--padding == '$')
644 trimmed = padding;
645 padding += 2;
646
647 while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
648 bufptr = save_char(bufptr, *padding++);
649 }
650
651 for (; !syntax_error &&
652 *str &&
653 ((trimmed == 0) || (str < trimmed)); str++) {
654 int c1, c2;
655 char *cp = 0;
656
657 if (str[0] == '^') {
658 if (str[1] == '\0' || (str + 1) == trimmed) {
659 bufptr = save_string(bufptr, "\\136");
660 ++str;
661 } else if (str[1] == '?') {
662 /*
663 * Although the 4.3BSD termcap file has an instance of "kb=^?",
664 * that appears to be just cut/paste since neither 4.3BSD nor
665 * 4.4BSD termcap interprets "^?" as DEL.
666 */
667 bufptr = save_string(bufptr, "\\177");
668 ++str;
669 } else {
670 bufptr = save_char(bufptr, *str++);
671 bufptr = save_char(bufptr, *str);
672 }
673 } else if (str[0] == '\\') {
674 if (str[1] == '\0' || (str + 1) == trimmed) {
675 bufptr = save_string(bufptr, "\\134");
676 ++str;
677 } else if (str[1] == '^') {
678 bufptr = save_string(bufptr, "\\136");
679 ++str;
680 } else if (str[1] == ',') {
681 bufptr = save_char(bufptr, *++str);
682 } else {
683 int xx1;
684
685 bufptr = save_char(bufptr, *str++);
686 xx1 = *str;
687 if (_nc_strict_bsd) {
688
689 if (isoctal(UChar(xx1))) {
690 int pad = 0;
691 int xx2;
692 int fix = 0;
693
694 if (!isoctal(UChar(str[1])))
695 pad = 2;
696 else if (str[1] && !isoctal(UChar(str[2])))
697 pad = 1;
698
699 /*
700 * Test for "\0", "\00" or "\000" and transform those
701 * into "\200".
702 */
703 if (xx1 == '0'
704 && ((pad == 2) || (str[1] == '0'))
705 && ((pad >= 1) || (str[2] == '0'))) {
706 xx2 = '2';
707 } else {
708 xx2 = '0';
709 pad = 0; /* FIXME - optionally pad to 3 digits */
710 }
711 if (myfix < MAX_TC_FIXUPS) {
712 fix = 3 - pad;
713 fixups[myfix].ch = 0;
714 fixups[myfix].offset = (int) (bufptr
715 - my_string
716 - 1);
717 }
718 while (pad-- > 0) {
719 bufptr = save_char(bufptr, xx2);
720 if (myfix < MAX_TC_FIXUPS) {
721 fixups[myfix].ch <<= 3;
722 fixups[myfix].ch |= (xx2 - '0');
723 }
724 xx2 = '0';
725 }
726 if (myfix < MAX_TC_FIXUPS) {
727 int n;
728 for (n = 0; n < fix; ++n) {
729 fixups[myfix].ch <<= 3;
730 fixups[myfix].ch |= (str[n] - '0');
731 }
732 if (fixups[myfix].ch < 32) {
733 ++myfix;
734 }
735 }
736 } else if (strchr("E\\nrtbf", xx1) == 0) {
737 switch (xx1) {
738 case 'e':
739 xx1 = 'E';
740 break;
741 case 'l':
742 xx1 = 'n';
743 break;
744 case 's':
745 bufptr = save_char(bufptr, '0');
746 bufptr = save_char(bufptr, '4');
747 xx1 = '0';
748 break;
749 case ':':
750 /*
751 * Note: termcap documentation claims that ":"
752 * must be escaped as "\072", however the
753 * documentation is incorrect - read the code.
754 * The replacement does not work reliably,
755 * so the advice is not helpful.
756 */
757 bufptr = save_char(bufptr, '0');
758 bufptr = save_char(bufptr, '7');
759 xx1 = '2';
760 break;
761 default:
762 /* should not happen, but handle this anyway */
763 _nc_SPRINTF(octal, _nc_SLIMIT(sizeof(octal))
764 "%03o", UChar(xx1));
765 bufptr = save_char(bufptr, octal[0]);
766 bufptr = save_char(bufptr, octal[1]);
767 xx1 = octal[2];
768 break;
769 }
770 }
771 } else {
772 if (myfix < MAX_TC_FIXUPS && isoctal(UChar(xx1))) {
773 bool will_fix = TRUE;
774 int n;
775
776 fixups[myfix].ch = 0;
777 fixups[myfix].offset = (int) (bufptr - my_string - 1);
778 for (n = 0; n < 3; ++n) {
779 if (isoctal(str[n])) {
780 octal_fixup(myfix, str[n]);
781 } else {
782 will_fix = FALSE;
783 break;
784 }
785 }
786 if (will_fix && (fixups[myfix].ch < 32))
787 ++myfix;
788 }
789 }
790 bufptr = save_char(bufptr, xx1);
791 }
792 } else if (str[0] == '$' && str[1] == '<') { /* discard padding */
793 str += 2;
794 while (isdigit(UChar(*str))
795 || *str == '.'
796 || *str == '*'
797 || *str == '/'
798 || *str == '>')
799 str++;
800 --str;
801 } else if (sscanf(str,
802 "[%%?%%p1%%{8}%%<%%t%d%%p1%%d%%e%%p1%%{16}%%<%%t%d%%p1%%{8}%%-%%d%%e%d;5;%%p1%%d%%;m",
803 &in0, &in1, &in2) == 3
804 && ((in0 == 4 && in1 == 10 && in2 == 48)
805 || (in0 == 3 && in1 == 9 && in2 == 38))) {
806 /* dumb-down an optimized case from xterm-256color for termcap */
807 if ((str = strstr(str, ";m")) == 0)
808 break; /* cannot happen */
809 ++str;
810 if (in2 == 48) {
811 bufptr = save_string(bufptr, "[48;5;%dm");
812 } else {
813 bufptr = save_string(bufptr, "[38;5;%dm");
814 }
815 } else if (str[0] == '%' && str[1] == '%') { /* escaped '%' */
816 bufptr = save_string(bufptr, "%%");
817 ++str;
818 } else if (*str != '%' || (parameterized < 1)) {
819 bufptr = save_char(bufptr, *str);
820 } else if (sscanf(str, "%%?%%{%d}%%>%%t%%{%d}%%+%%;", &c1, &c2) == 2) {
821 str = strchr(str, ';');
822 bufptr = save_tc_inequality(bufptr, c1, c2);
823 } else if (sscanf(str, "%%?%%{%d}%%>%%t%%'%c'%%+%%;", &c1, &ch2) == 2) {
824 str = strchr(str, ';');
825 bufptr = save_tc_inequality(bufptr, c1, ch2);
826 } else if (sscanf(str, "%%?%%'%c'%%>%%t%%{%d}%%+%%;", &ch1, &c2) == 2) {
827 str = strchr(str, ';');
828 bufptr = save_tc_inequality(bufptr, ch1, c2);
829 } else if (sscanf(str, "%%?%%'%c'%%>%%t%%'%c'%%+%%;", &ch1, &ch2) == 2) {
830 str = strchr(str, ';');
831 bufptr = save_tc_inequality(bufptr, ch1, ch2);
832 } else if ((len = bcd_expression(str)) != 0) {
833 str += len;
834 bufptr = save_string(bufptr, "%B");
835 } else if ((sscanf(str, "%%{%d}%%+%%%c", &c1, &ch2) == 2
836 || sscanf(str, "%%'%c'%%+%%%c", &ch1, &ch2) == 2)
837 && ch2 == 'c'
838 && (cp = strchr(str, '+'))) {
839 str = cp + 2;
840 bufptr = save_string(bufptr, "%+");
841
842 if (ch1)
843 c1 = ch1;
844 bufptr = save_tc_char(bufptr, c1);
845 }
846 /* FIXME: this "works" for 'delta' */
847 else if (strncmp(str, "%{2}%*%-", (size_t) 8) == 0) {
848 str += 7;
849 bufptr = save_string(bufptr, "%D");
850 } else if (strncmp(str, "%{96}%^", (size_t) 7) == 0) {
851 str += 6;
852 if (saw_m++ == 0) {
853 bufptr = save_string(bufptr, "%n");
854 }
855 } else if (strncmp(str, "%{127}%^", (size_t) 8) == 0) {
856 str += 7;
857 if (saw_n++ == 0) {
858 bufptr = save_string(bufptr, "%m");
859 }
860 } else { /* cm-style format element */
861 str++;
862 switch (*str) {
863 case '%':
864 bufptr = save_char(bufptr, '%');
865 break;
866
867 case '0':
868 case '1':
869 case '2':
870 case '3':
871 case '4':
872 case '5':
873 case '6':
874 case '7':
875 case '8':
876 case '9':
877 bufptr = save_char(bufptr, '%');
878 ch1 = 0;
879 ch2 = 0;
880 digits = 0;
881 while (isdigit(UChar(*str))) {
882 if (++digits > 2) {
883 syntax_error = TRUE;
884 break;
885 }
886 ch2 = ch1;
887 ch1 = *str++;
888 if (digits == 2 && ch2 != '0') {
889 syntax_error = TRUE;
890 break;
891 } else if (_nc_strict_bsd) {
892 if (ch1 > '3') {
893 syntax_error = TRUE;
894 break;
895 }
896 } else {
897 bufptr = save_char(bufptr, ch1);
898 }
899 }
900 if (syntax_error)
901 break;
902 /*
903 * Convert %02 to %2 and %03 to %3
904 */
905 if (ch2 == '0' && !_nc_strict_bsd) {
906 ch2 = 0;
907 bufptr[-2] = bufptr[-1];
908 *--bufptr = 0;
909 }
910 if (_nc_strict_bsd) {
911 if (ch2 != 0 && ch2 != '0') {
912 syntax_error = TRUE;
913 } else if (ch1 < '2') {
914 ch1 = 'd';
915 }
916 bufptr = save_char(bufptr, ch1);
917 }
918 if (strchr("oxX.", *str)) {
919 syntax_error = TRUE; /* termcap doesn't have octal, hex */
920 }
921 break;
922
923 case 'd':
924 bufptr = save_string(bufptr, "%d");
925 break;
926
927 case 'c':
928 bufptr = save_string(bufptr, "%.");
929 break;
930
931 /*
932 * %s isn't in termcap, but it's convenient to pass it through
933 * so we can represent things like terminfo pfkey strings in
934 * termcap notation.
935 */
936 case 's':
937 if (_nc_strict_bsd) {
938 syntax_error = TRUE;
939 } else {
940 bufptr = save_string(bufptr, "%s");
941 }
942 break;
943
944 case 'p':
945 str++;
946 if (*str == '1')
947 seenone = 1;
948 else if (*str == '2') {
949 if (!seenone && !seentwo) {
950 bufptr = save_string(bufptr, "%r");
951 seentwo++;
952 }
953 } else if (*str >= '3') {
954 syntax_error = TRUE;
955 }
956 break;
957
958 case 'i':
959 bufptr = save_string(bufptr, "%i");
960 break;
961
962 default:
963 bufptr = save_char(bufptr, *str);
964 syntax_error = TRUE;
965 break;
966 } /* endswitch (*str) */
967 } /* endelse (*str == '%') */
968
969 /*
970 * 'str' always points to the end of what was scanned in this step,
971 * but that may not be the end of the string.
972 */
973 assert(str != 0);
974 if (str == 0 || *str == '\0')
975 break;
976
977 } /* endwhile (*str) */
978
979 if (!syntax_error &&
980 myfix > 0 &&
981 ((int) strlen(my_string) - (4 * myfix)) < MIN_TC_FIXUPS) {
982 while (--myfix >= 0) {
983 char *p = fixups[myfix].offset + my_string;
984 *p++ = '^';
985 *p++ = (char) (fixups[myfix].ch | '@');
986 while ((p[0] = p[2]) != '\0') {
987 ++p;
988 }
989 }
990 }
991
992 DEBUG_THIS(("... _nc_infotocap %s",
993 syntax_error
994 ? "<ERR>"
995 : _nc_visbuf(my_string)));
996
997 return (syntax_error ? NULL : my_string);
998 }
999
1000 #ifdef MAIN
1001
1002 int curr_line;
1003
1004 int
main(int argc,char * argv[])1005 main(int argc, char *argv[])
1006 {
1007 int c, tc = FALSE;
1008
1009 while ((c = getopt(argc, argv, "c")) != EOF)
1010 switch (c) {
1011 case 'c':
1012 tc = TRUE;
1013 break;
1014 }
1015
1016 curr_line = 0;
1017 for (;;) {
1018 char buf[BUFSIZ];
1019
1020 ++curr_line;
1021 if (fgets(buf, sizeof(buf), stdin) == 0)
1022 break;
1023 buf[strlen(buf) - 1] = '\0';
1024 _nc_set_source(buf);
1025
1026 if (tc) {
1027 char *cp = _nc_infotocap("to termcap", buf, 1);
1028
1029 if (cp)
1030 (void) fputs(cp, stdout);
1031 } else
1032 (void) fputs(_nc_captoinfo("to terminfo", buf, 1), stdout);
1033 (void) putchar('\n');
1034 }
1035 return (0);
1036 }
1037 #endif /* MAIN */
1038
1039 #if NO_LEAKS
1040 NCURSES_EXPORT(void)
_nc_captoinfo_leaks(void)1041 _nc_captoinfo_leaks(void)
1042 {
1043 if (my_string != 0) {
1044 FreeAndNull(my_string);
1045 }
1046 my_length = 0;
1047 }
1048 #endif
1049