1 /*-
2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1991, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10 #include "config.h"
11
12 #include <sys/types.h>
13 #include <sys/queue.h>
14 #include <sys/stat.h>
15
16 #include <bitstring.h>
17 #include <ctype.h>
18 #include <errno.h>
19 #include <fcntl.h>
20 #include <limits.h>
21 #include <locale.h>
22 #include <stdarg.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27
28 #include "common.h"
29 #include "../vi/vi.h"
30
31 /*
32 * msgq --
33 * Display a message.
34 *
35 * PUBLIC: void msgq(SCR *, mtype_t, const char *, ...);
36 */
37 void
msgq(SCR * sp,mtype_t mt,const char * fmt,...)38 msgq(SCR *sp, mtype_t mt, const char *fmt, ...)
39 {
40 #ifndef NL_ARGMAX
41 #define __NL_ARGMAX 20 /* Set to 9 by System V. */
42 struct {
43 const char *str; /* String pointer. */
44 size_t arg; /* Argument number. */
45 size_t prefix; /* Prefix string length. */
46 size_t skip; /* Skipped string length. */
47 size_t suffix; /* Suffix string length. */
48 } str[__NL_ARGMAX];
49 #endif
50 static int reenter; /* STATIC: Re-entrancy check. */
51 GS *gp;
52 size_t blen, len, mlen, nlen;
53 const char *p;
54 char *bp, *mp;
55 va_list ap;
56 #ifndef NL_ARGMAX
57 int ch;
58 char *rbp, *s_rbp;
59 const char *t, *u;
60 size_t cnt1, cnt2, soff;
61 #endif
62
63 /*
64 * !!!
65 * It's possible to enter msg when there's no screen to hold the
66 * message. If sp is NULL, ignore the special cases and put the
67 * message out to stderr.
68 */
69 if (sp == NULL) {
70 gp = NULL;
71 if (mt == M_BERR)
72 mt = M_ERR;
73 else if (mt == M_VINFO)
74 mt = M_INFO;
75 } else {
76 gp = sp->gp;
77 switch (mt) {
78 case M_BERR:
79 if (F_ISSET(sp, SC_VI) && !O_ISSET(sp, O_VERBOSE)) {
80 F_SET(gp, G_BELLSCHED);
81 return;
82 }
83 mt = M_ERR;
84 break;
85 case M_VINFO:
86 if (!O_ISSET(sp, O_VERBOSE))
87 return;
88 mt = M_INFO;
89 /* FALLTHROUGH */
90 case M_INFO:
91 if (F_ISSET(sp, SC_EX_SILENT))
92 return;
93 break;
94 case M_ERR:
95 case M_SYSERR:
96 break;
97 default:
98 abort();
99 }
100 }
101
102 /*
103 * It's possible to reenter msg when it allocates space. We're
104 * probably dead anyway, but there's no reason to drop core.
105 *
106 * XXX
107 * Yes, there's a race, but it should only be two instructions.
108 */
109 if (reenter++)
110 return;
111
112 /* Get space for the message. */
113 nlen = 1024;
114 if (0) {
115 retry: FREE_SPACE(sp, bp, blen);
116 nlen *= 2;
117 }
118 bp = NULL;
119 blen = 0;
120 GET_SPACE_GOTOC(sp, bp, blen, nlen);
121
122 /*
123 * Error prefix.
124 *
125 * mp: pointer to the current next character to be written
126 * mlen: length of the already written characters
127 * blen: total length of the buffer
128 */
129 #define REM (blen - mlen)
130 mp = bp;
131 mlen = 0;
132 if (mt == M_SYSERR) {
133 p = msg_cat(sp, "020|Error: ", &len);
134 if (REM < len)
135 goto retry;
136 memcpy(mp, p, len);
137 mp += len;
138 mlen += len;
139 }
140
141 /*
142 * If we're running an ex command that the user didn't enter, display
143 * the file name and line number prefix.
144 */
145 if ((mt == M_ERR || mt == M_SYSERR) &&
146 sp != NULL && gp != NULL && gp->if_name != NULL) {
147 CHAR_T *wp;
148 size_t wlen;
149
150 CHAR2INT(sp, gp->if_name, strlen(gp->if_name) + 1, wp, wlen);
151 for (; *wp != '\0'; ++wp) {
152 len = snprintf(mp, REM, "%s", KEY_NAME(sp, *wp));
153 mp += len;
154 if ((mlen += len) > blen)
155 goto retry;
156 }
157 len = snprintf(mp, REM, ", %d: ", gp->if_lno);
158 mp += len;
159 if ((mlen += len) > blen)
160 goto retry;
161 }
162
163 /* If nothing to format, we're done. */
164 if (fmt == NULL)
165 goto nofmt;
166 fmt = msg_cat(sp, fmt, NULL);
167
168 #ifndef NL_ARGMAX
169 /*
170 * Nvi should run on machines that don't support the numbered argument
171 * specifications (%[digit]*$). We do this by reformatting the string
172 * so that we can hand it to vsprintf(3) and it will use the arguments
173 * in the right order. When vsprintf returns, we put the string back
174 * into the right order. It's undefined, according to SVID III, to mix
175 * numbered argument specifications with the standard style arguments,
176 * so this should be safe.
177 *
178 * In addition, we also need a character that is known to not occur in
179 * any vi message, for separating the parts of the string. As callers
180 * of msgq are responsible for making sure that all the non-printable
181 * characters are formatted for printing before calling msgq, we use a
182 * random non-printable character selected at terminal initialization
183 * time. This code isn't fast by any means, but as messages should be
184 * relatively short and normally have only a few arguments, it won't be
185 * too bad. Regardless, nobody has come up with any other solution.
186 *
187 * The result of this loop is an array of pointers into the message
188 * string, with associated lengths and argument numbers. The array
189 * is in the "correct" order, and the arg field contains the argument
190 * order.
191 */
192 for (p = fmt, soff = 0; soff < __NL_ARGMAX;) {
193 for (t = p; *p != '\0' && *p != '%'; ++p);
194 if (*p == '\0')
195 break;
196 ++p;
197 if (!isdigit((u_char)*p)) {
198 if (*p == '%')
199 ++p;
200 continue;
201 }
202 for (u = p; *++p != '\0' && isdigit((u_char)*p););
203 if (*p != '$')
204 continue;
205
206 /* Up to, and including the % character. */
207 str[soff].str = t;
208 str[soff].prefix = u - t;
209
210 /* Up to, and including the $ character. */
211 str[soff].arg = atoi(u);
212 str[soff].skip = (p - u) + 1;
213 if (str[soff].arg >= __NL_ARGMAX)
214 goto ret;
215
216 /* Up to, and including the conversion character. */
217 for (u = p; (ch = *++p) != '\0';)
218 if (isalpha(ch) &&
219 strchr("diouxXfeEgGcspn", ch) != NULL)
220 break;
221 str[soff].suffix = p - u;
222 if (ch != '\0')
223 ++p;
224 ++soff;
225 }
226
227 /* If no magic strings, we're done. */
228 if (soff == 0)
229 goto format;
230
231 /* Get space for the reordered strings. */
232 if ((rbp = malloc(nlen)) == NULL)
233 goto ret;
234 s_rbp = rbp;
235
236 /*
237 * Reorder the strings into the message string based on argument
238 * order.
239 *
240 * !!!
241 * We ignore arguments that are out of order, i.e. if we don't find
242 * an argument, we continue. Assume (almost certainly incorrectly)
243 * that whoever created the string knew what they were doing.
244 *
245 * !!!
246 * Brute force "sort", but since we don't expect more than one or two
247 * arguments in a string, the setup cost of a fast sort will be more
248 * expensive than the loop.
249 */
250 for (cnt1 = 1; cnt1 <= soff; ++cnt1)
251 for (cnt2 = 0; cnt2 < soff; ++cnt2)
252 if (cnt1 == str[cnt2].arg) {
253 memmove(s_rbp, str[cnt2].str, str[cnt2].prefix);
254 memmove(s_rbp + str[cnt2].prefix,
255 str[cnt2].str + str[cnt2].prefix +
256 str[cnt2].skip, str[cnt2].suffix);
257 s_rbp += str[cnt2].prefix + str[cnt2].suffix;
258 *s_rbp++ =
259 gp == NULL ? DEFAULT_NOPRINT : gp->noprint;
260 break;
261 }
262 *s_rbp = '\0';
263 fmt = rbp;
264 #endif
265
266 #ifndef NL_ARGMAX
267 format: /* Format the arguments into the string. */
268 #endif
269 va_start(ap, fmt);
270 len = vsnprintf(mp, REM, fmt, ap);
271 va_end(ap);
272 if (len >= nlen)
273 goto retry;
274
275 #ifndef NL_ARGMAX
276 if (soff == 0)
277 goto nofmt;
278
279 /*
280 * Go through the resulting string, and, for each separator character
281 * separated string, enter its new starting position and length in the
282 * array.
283 */
284 for (p = t = mp, cnt1 = 1,
285 ch = gp == NULL ? DEFAULT_NOPRINT : gp->noprint; *p != '\0'; ++p)
286 if (*p == ch) {
287 for (cnt2 = 0; cnt2 < soff; ++cnt2)
288 if (str[cnt2].arg == cnt1)
289 break;
290 str[cnt2].str = t;
291 str[cnt2].prefix = p - t;
292 t = p + 1;
293 ++cnt1;
294 }
295
296 /*
297 * Reorder the strings once again, putting them back into the
298 * message buffer.
299 *
300 * !!!
301 * Note, the length of the message gets decremented once for
302 * each substring, when we discard the separator character.
303 */
304 for (s_rbp = rbp, cnt1 = 0; cnt1 < soff; ++cnt1) {
305 memmove(rbp, str[cnt1].str, str[cnt1].prefix);
306 rbp += str[cnt1].prefix;
307 --len;
308 }
309 memmove(mp, s_rbp, rbp - s_rbp);
310
311 /* Free the reordered string memory. */
312 free(s_rbp);
313 #endif
314
315 nofmt: mp += len;
316 if ((mlen += len) > blen)
317 goto retry;
318 if (mt == M_SYSERR) {
319 len = snprintf(mp, REM, ": %s", strerror(errno));
320 mp += len;
321 if ((mlen += len) > blen)
322 goto retry;
323 mt = M_ERR;
324 }
325
326 /* Add trailing newline. */
327 if ((mlen += 1) > blen)
328 goto retry;
329 *mp = '\n';
330
331 if (sp != NULL)
332 (void)ex_fflush(sp);
333 if (gp != NULL)
334 gp->scr_msg(sp, mt, bp, mlen);
335 else
336 (void)fprintf(stderr, "%.*s", (int)mlen, bp);
337
338 /* Cleanup. */
339 #ifndef NL_ARGMAX
340 ret:
341 #endif
342 FREE_SPACE(sp, bp, blen);
343 alloc_err:
344 reenter = 0;
345 }
346
347 /*
348 * msgq_wstr --
349 * Display a message with an embedded string.
350 *
351 * PUBLIC: void msgq_wstr(SCR *, mtype_t, const CHAR_T *, const char *);
352 */
353 void
msgq_wstr(SCR * sp,mtype_t mtype,const CHAR_T * str,const char * fmt)354 msgq_wstr(SCR *sp, mtype_t mtype, const CHAR_T *str, const char *fmt)
355 {
356 size_t nlen;
357 CONST char *nstr;
358
359 if (str == NULL) {
360 msgq(sp, mtype, "%s", fmt);
361 return;
362 }
363 INT2CHAR(sp, str, STRLEN(str) + 1, nstr, nlen);
364 msgq_str(sp, mtype, nstr, fmt);
365 }
366
367 /*
368 * msgq_str --
369 * Display a message with an embedded string.
370 *
371 * PUBLIC: void msgq_str(SCR *, mtype_t, const char *, const char *);
372 */
373 void
msgq_str(SCR * sp,mtype_t mtype,const char * str,const char * fmt)374 msgq_str(SCR *sp, mtype_t mtype, const char *str, const char *fmt)
375 {
376 int nf, sv_errno;
377 char *p;
378
379 if (str == NULL) {
380 msgq(sp, mtype, "%s", fmt);
381 return;
382 }
383
384 sv_errno = errno;
385 p = msg_print(sp, str, &nf);
386 errno = sv_errno;
387 msgq(sp, mtype, fmt, p);
388 if (nf)
389 FREE_SPACE(sp, p, 0);
390 }
391
392 /*
393 * mod_rpt --
394 * Report on the lines that changed.
395 *
396 * !!!
397 * Historic vi documentation (USD:15-8) claimed that "The editor will also
398 * always tell you when a change you make affects text which you cannot see."
399 * This wasn't true -- edit a large file and do "100d|1". We don't implement
400 * this semantic since it requires tracking each line that changes during a
401 * command instead of just keeping count.
402 *
403 * Line counts weren't right in historic vi, either. For example, given the
404 * file:
405 * abc
406 * def
407 * the command 2d}, from the 'b' would report that two lines were deleted,
408 * not one.
409 *
410 * PUBLIC: void mod_rpt(SCR *);
411 */
412 void
mod_rpt(SCR * sp)413 mod_rpt(SCR *sp)
414 {
415 static char * const action[] = {
416 "293|added",
417 "294|changed",
418 "295|deleted",
419 "296|joined",
420 "297|moved",
421 "298|shifted",
422 "299|yanked",
423 };
424 static char * const lines[] = {
425 "300|line",
426 "301|lines",
427 };
428 recno_t total;
429 u_long rptval;
430 int first, cnt;
431 size_t blen, len, tlen;
432 const char *t;
433 char * const *ap;
434 char *bp, *p;
435
436 /* Change reports are turned off in batch mode. */
437 if (F_ISSET(sp, SC_EX_SILENT))
438 return;
439
440 /* Reset changing line number. */
441 sp->rptlchange = OOBLNO;
442
443 /*
444 * Don't build a message if not enough changed.
445 *
446 * !!!
447 * And now, a vi clone test. Historically, vi reported if the number
448 * of changed lines was > than the value, not >=, unless it was a yank
449 * command, which used >=. No lie. Furthermore, an action was never
450 * reported for a single line action. This is consistent for actions
451 * other than yank, but yank didn't report single line actions even if
452 * the report edit option was set to 1. In addition, setting report to
453 * 0 in the 4BSD historic vi was equivalent to setting it to 1, for an
454 * unknown reason (this bug was fixed in System III/V at some point).
455 * I got complaints, so nvi conforms to System III/V historic practice
456 * except that we report a yank of 1 line if report is set to 1.
457 */
458 #define ARSIZE(a) sizeof(a) / sizeof (*a)
459 #define MAXNUM 25
460 rptval = O_VAL(sp, O_REPORT);
461 for (cnt = 0, total = 0; cnt < ARSIZE(action); ++cnt)
462 total += sp->rptlines[cnt];
463 if (total == 0)
464 return;
465 if (total <= rptval && sp->rptlines[L_YANKED] < rptval) {
466 for (cnt = 0; cnt < ARSIZE(action); ++cnt)
467 sp->rptlines[cnt] = 0;
468 return;
469 }
470
471 /* Build and display the message. */
472 GET_SPACE_GOTOC(sp, bp, blen, sizeof(action) * MAXNUM + 1);
473 for (p = bp, first = 1, tlen = 0,
474 ap = action, cnt = 0; cnt < ARSIZE(action); ++ap, ++cnt)
475 if (sp->rptlines[cnt] != 0) {
476 if (first)
477 first = 0;
478 else {
479 *p++ = ';';
480 *p++ = ' ';
481 tlen += 2;
482 }
483 len = snprintf(p, MAXNUM, "%lu ",
484 (u_long)sp->rptlines[cnt]);
485 p += len;
486 tlen += len;
487 t = msg_cat(sp,
488 lines[sp->rptlines[cnt] == 1 ? 0 : 1], &len);
489 memcpy(p, t, len);
490 p += len;
491 tlen += len;
492 *p++ = ' ';
493 ++tlen;
494 t = msg_cat(sp, *ap, &len);
495 memcpy(p, t, len);
496 p += len;
497 tlen += len;
498 sp->rptlines[cnt] = 0;
499 }
500
501 /* Add trailing newline. */
502 *p = '\n';
503 ++tlen;
504
505 (void)ex_fflush(sp);
506 sp->gp->scr_msg(sp, M_INFO, bp, tlen);
507
508 FREE_SPACE(sp, bp, blen);
509 alloc_err:
510 return;
511
512 #undef ARSIZE
513 #undef MAXNUM
514 }
515
516 /*
517 * msgq_status --
518 * Report on the file's status.
519 *
520 * PUBLIC: void msgq_status(SCR *, recno_t, u_int);
521 */
522 void
msgq_status(SCR * sp,recno_t lno,u_int flags)523 msgq_status(SCR *sp, recno_t lno, u_int flags)
524 {
525 recno_t last;
526 size_t blen, len;
527 int cnt, needsep;
528 const char *t;
529 char **ap, *bp, *np, *p, *s, *ep;
530 CHAR_T *wp;
531 size_t wlen;
532
533 /* Get sufficient memory. */
534 len = strlen(sp->frp->name);
535 GET_SPACE_GOTOC(sp, bp, blen, len * MAX_CHARACTER_COLUMNS + 128);
536 p = bp;
537 ep = bp + blen;
538
539 /* Convert the filename. */
540 CHAR2INT(sp, sp->frp->name, len + 1, wp, wlen);
541
542 /* Copy in the filename. */
543 for (; *wp != '\0'; ++wp) {
544 len = KEY_LEN(sp, *wp);
545 memcpy(p, KEY_NAME(sp, *wp), len);
546 p += len;
547 }
548 np = p;
549 *p++ = ':';
550 *p++ = ' ';
551
552 /* Copy in the argument count. */
553 if (F_ISSET(sp, SC_STATUS_CNT) && sp->argv != NULL) {
554 for (cnt = 0, ap = sp->argv; *ap != NULL; ++ap, ++cnt);
555 if (cnt > 1) {
556 (void)snprintf(p, ep - p,
557 msg_cat(sp, "317|%d files to edit", NULL), cnt);
558 p += strlen(p);
559 *p++ = ':';
560 *p++ = ' ';
561 }
562 F_CLR(sp, SC_STATUS_CNT);
563 }
564
565 /*
566 * See nvi/exf.c:file_init() for a description of how and when the
567 * read-only bit is set.
568 *
569 * !!!
570 * The historic display for "name changed" was "[Not edited]".
571 */
572 needsep = 0;
573 if (F_ISSET(sp->frp, FR_NEWFILE)) {
574 F_CLR(sp->frp, FR_NEWFILE);
575 t = msg_cat(sp, "021|new file", &len);
576 memcpy(p, t, len);
577 p += len;
578 needsep = 1;
579 } else {
580 if (F_ISSET(sp->frp, FR_NAMECHANGE)) {
581 t = msg_cat(sp, "022|name changed", &len);
582 memcpy(p, t, len);
583 p += len;
584 needsep = 1;
585 }
586 if (needsep) {
587 *p++ = ',';
588 *p++ = ' ';
589 }
590 if (F_ISSET(sp->ep, F_MODIFIED))
591 t = msg_cat(sp, "023|modified", &len);
592 else
593 t = msg_cat(sp, "024|unmodified", &len);
594 memcpy(p, t, len);
595 p += len;
596 needsep = 1;
597 }
598 if (F_ISSET(sp->frp, FR_UNLOCKED)) {
599 if (needsep) {
600 *p++ = ',';
601 *p++ = ' ';
602 }
603 t = msg_cat(sp, "025|UNLOCKED", &len);
604 memcpy(p, t, len);
605 p += len;
606 needsep = 1;
607 }
608 if (O_ISSET(sp, O_READONLY)) {
609 if (needsep) {
610 *p++ = ',';
611 *p++ = ' ';
612 }
613 t = msg_cat(sp, "026|readonly", &len);
614 memcpy(p, t, len);
615 p += len;
616 needsep = 1;
617 }
618 if (needsep) {
619 *p++ = ':';
620 *p++ = ' ';
621 }
622 if (LF_ISSET(MSTAT_SHOWLAST)) {
623 if (db_last(sp, &last))
624 return;
625 if (last == 0) {
626 t = msg_cat(sp, "028|empty file", &len);
627 memcpy(p, t, len);
628 p += len;
629 } else {
630 t = msg_cat(sp, "027|line %lu of %lu [%ld%%]", &len);
631 (void)snprintf(p, ep - p, t, (u_long)lno, (u_long)last,
632 ((u_long)lno * 100) / last);
633 p += strlen(p);
634 }
635 } else {
636 t = msg_cat(sp, "029|line %lu", &len);
637 (void)snprintf(p, ep - p, t, (u_long)lno);
638 p += strlen(p);
639 }
640 #ifdef DEBUG
641 (void)snprintf(p, ep - p, " (pid %lu)", (u_long)getpid());
642 p += strlen(p);
643 #endif
644 *p++ = '\n';
645 len = p - bp;
646
647 /*
648 * There's a nasty problem with long path names. Cscope and tags files
649 * can result in long paths and vi will request a continuation key from
650 * the user as soon as it starts the screen. Unfortunately, the user
651 * has already typed ahead, and chaos results. If we assume that the
652 * characters in the filenames and informational messages only take a
653 * single screen column each, we can trim the filename.
654 *
655 * XXX
656 * Status lines get put up at fairly awkward times. For example, when
657 * you do a filter read (e.g., :read ! echo foo) in the top screen of a
658 * split screen, we have to repaint the status lines for all the screens
659 * below the top screen. We don't want users having to enter continue
660 * characters for those screens. Make it really hard to screw this up.
661 */
662 s = bp;
663 if (LF_ISSET(MSTAT_TRUNCATE) && len > sp->cols) {
664 for (; s < np && (*s != '/' || (p - s) > sp->cols - 3); ++s);
665 if (s == np) {
666 s = p - (sp->cols - 5);
667 *--s = ' ';
668 }
669 *--s = '.';
670 *--s = '.';
671 *--s = '.';
672 len = p - s;
673 }
674
675 /* Flush any waiting ex messages. */
676 (void)ex_fflush(sp);
677
678 sp->gp->scr_msg(sp, M_INFO, s, len);
679
680 FREE_SPACE(sp, bp, blen);
681 alloc_err:
682 return;
683 }
684
685 /*
686 * msg_open --
687 * Open the message catalogs.
688 *
689 * PUBLIC: int msg_open(SCR *, char *);
690 */
691 int
msg_open(SCR * sp,char * file)692 msg_open(SCR *sp, char *file)
693 {
694 /*
695 * !!!
696 * Assume that the first file opened is the system default, and that
697 * all subsequent ones user defined. Only display error messages
698 * if we can't open the user defined ones -- it's useful to know if
699 * the system one wasn't there, but if nvi is being shipped with an
700 * installed system, the file will be there, if it's not, then the
701 * message will be repeated every time nvi is started up.
702 */
703 static int first = 1;
704 nl_catd catd;
705 char *p;
706 int rval = 0;
707
708 if ((p = strrchr(file, '/')) != NULL && p[1] == '\0') {
709 /* Confirms to XPG4. */
710 if ((p = join(file, setlocale(LC_MESSAGES, NULL))) == NULL) {
711 msgq(sp, M_SYSERR, NULL);
712 return (1);
713 }
714 } else {
715 /* Make sure it's recognized as a path by catopen(3). */
716 if ((p = join(".", file)) == NULL) {
717 msgq(sp, M_SYSERR, NULL);
718 return (1);
719 }
720 }
721 errno = 0;
722 if ((catd = catopen(p, NL_CAT_LOCALE)) == (nl_catd)-1) {
723 if (first) {
724 first = 0;
725 rval = 1;
726 goto ret;
727 }
728
729 /*
730 * POSIX.1-2008 gives no instruction on how to report a
731 * corrupt catalog file. Errno == 0 is not rare; add
732 * EFTYPE, which is seen on FreeBSD, for a good measure.
733 */
734 #ifdef EFTYPE
735 if (errno == 0 || errno == EFTYPE)
736 #else
737 if (errno == 0)
738 #endif
739 msgq_str(sp, M_ERR, p,
740 "030|The file %s is not a message catalog");
741 else
742 msgq_str(sp, M_SYSERR, p, "%s");
743 rval = 1;
744 goto ret;
745 }
746 first = 0;
747
748 msg_close(sp->gp);
749 sp->gp->catd = catd;
750 ret: free(p);
751 return (rval);
752 }
753
754 /*
755 * msg_close --
756 * Close the message catalogs.
757 *
758 * PUBLIC: void msg_close(GS *);
759 */
760 void
msg_close(GS * gp)761 msg_close(GS *gp)
762 {
763 if (gp->catd != (nl_catd)-1)
764 (void)catclose(gp->catd);
765 }
766
767 /*
768 * msg_cont --
769 * Return common continuation messages.
770 *
771 * PUBLIC: const char *msg_cmsg(SCR *, cmsg_t, size_t *);
772 */
773 const char *
msg_cmsg(SCR * sp,cmsg_t which,size_t * lenp)774 msg_cmsg(SCR *sp, cmsg_t which, size_t *lenp)
775 {
776 switch (which) {
777 case CMSG_CONF:
778 return (msg_cat(sp, "268|confirm? [ynq]", lenp));
779 case CMSG_CONT:
780 return (msg_cat(sp, "269|Press any key to continue: ", lenp));
781 case CMSG_CONT_EX:
782 return (msg_cat(sp,
783 "270|Press any key to continue [: to enter more ex commands]: ",
784 lenp));
785 case CMSG_CONT_R:
786 return (msg_cat(sp, "161|Press Enter to continue: ", lenp));
787 case CMSG_CONT_S:
788 return (msg_cat(sp, "275| cont?", lenp));
789 case CMSG_CONT_Q:
790 return (msg_cat(sp,
791 "271|Press any key to continue [q to quit]: ", lenp));
792 default:
793 abort();
794 }
795 /* NOTREACHED */
796 }
797
798 /*
799 * msg_cat --
800 * Return a single message from the catalog, plus its length.
801 *
802 * !!!
803 * Only a single catalog message can be accessed at a time, if multiple
804 * ones are needed, they must be copied into local memory.
805 *
806 * PUBLIC: const char *msg_cat(SCR *, const char *, size_t *);
807 */
808 const char *
msg_cat(SCR * sp,const char * str,size_t * lenp)809 msg_cat(SCR *sp, const char *str, size_t *lenp)
810 {
811 GS *gp;
812 char *p;
813 int msgno;
814
815 /*
816 * If it's not a catalog message, i.e. has doesn't have a leading
817 * number and '|' symbol, we're done.
818 */
819 if (isdigit((u_char)str[0]) &&
820 isdigit((u_char)str[1]) &&
821 isdigit((u_char)str[2]) && str[3] == '|') {
822 msgno = atoi(str);
823 str = &str[4];
824
825 gp = sp == NULL ? NULL : sp->gp;
826 if (gp != NULL && gp->catd != (nl_catd)-1 &&
827 (p = catgets(gp->catd, 1, msgno, str)) != NULL) {
828 if (lenp != NULL)
829 *lenp = strlen(p);
830 return (p);
831 }
832 }
833 if (lenp != NULL)
834 *lenp = strlen(str);
835 return (str);
836 }
837
838 /*
839 * msg_print --
840 * Return a printable version of a string, in allocated memory.
841 *
842 * PUBLIC: char *msg_print(SCR *, const char *, int *);
843 */
844 char *
msg_print(SCR * sp,const char * s,int * needfree)845 msg_print(SCR *sp, const char *s, int *needfree)
846 {
847 size_t blen, nlen;
848 char *bp, *ep, *p, *t;
849 CHAR_T *wp, *cp;
850 size_t wlen;
851
852 *needfree = 0;
853
854 /* XXX Not good for debugging ex_read & ex_filter.*/
855 CHAR2INT5(sp, EXP(sp)->ibcw, (char *)s, strlen(s) + 1, wp, wlen);
856 for (cp = wp; *cp != '\0'; ++cp)
857 if (!ISPRINT(*cp))
858 break;
859 if (*cp == '\0')
860 return ((char *)s); /* SAFE: needfree set to 0. */
861
862 nlen = 0;
863 if (0) {
864 retry: if (sp == NULL)
865 free(bp);
866 else
867 FREE_SPACE(sp, bp, blen);
868 *needfree = 0;
869 }
870 nlen += 256;
871 if (sp == NULL) {
872 if ((bp = malloc(nlen)) == NULL)
873 goto alloc_err;
874 } else
875 GET_SPACE_GOTOC(sp, bp, blen, nlen);
876 if (0) {
877 alloc_err: return ("");
878 }
879 *needfree = 1;
880
881 for (p = bp, ep = (bp + blen) - 1; *wp != '\0' && p < ep; ++wp)
882 for (t = KEY_NAME(sp, *wp); *t != '\0' && p < ep; *p++ = *t++);
883 if (p == ep)
884 goto retry;
885 *p = '\0';
886 return (bp);
887 }
888