1 /* $NetBSD: msg.c,v 1.4 2017/11/06 03:03:54 rin Exp $ */
2 /*-
3 * Copyright (c) 1991, 1993, 1994
4 * The Regents of the University of California. All rights reserved.
5 * Copyright (c) 1991, 1993, 1994, 1995, 1996
6 * Keith Bostic. All rights reserved.
7 *
8 * See the LICENSE file for redistribution information.
9 */
10
11 #include "config.h"
12
13 #include <sys/cdefs.h>
14 #if 0
15 #ifndef lint
16 static const char sccsid[] = "Id: msg.c,v 10.61 2003/07/18 23:17:30 skimo Exp (Berkeley) Date: 2003/07/18 23:17:30 ";
17 #endif /* not lint */
18 #else
19 __RCSID("$NetBSD: msg.c,v 1.4 2017/11/06 03:03:54 rin Exp $");
20 #endif
21
22 #include <sys/param.h>
23 #include <sys/types.h> /* XXX: param.h may not have included types.h */
24 #include <sys/queue.h>
25 #include <sys/stat.h>
26 #include <sys/time.h>
27
28 #include <bitstring.h>
29 #include <ctype.h>
30 #include <errno.h>
31 #include <fcntl.h>
32 #include <limits.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37
38 #ifdef __STDC__
39 #include <stdarg.h>
40 #else
41 #include <varargs.h>
42 #endif
43
44 #include "common.h"
45 #include "dbinternal.h"
46 #include "../vi/vi.h"
47
48 /*
49 * msgq --
50 * Display a message.
51 *
52 * PUBLIC: void msgq __P((SCR *, mtype_t, const char *, ...));
53 */
54 void
55 #ifdef __STDC__
msgq(SCR * sp,mtype_t mt,const char * fmt,...)56 msgq(SCR *sp, mtype_t mt, const char *fmt, ...)
57 #else
58 msgq(sp, mt, fmt, va_alist)
59 SCR *sp;
60 mtype_t mt;
61 const char *fmt;
62 va_dcl
63 #endif
64 {
65 #ifndef NL_ARGMAX
66 #define __NL_ARGMAX 20 /* Set to 9 by System V. */
67 struct {
68 const char *str; /* String pointer. */
69 size_t arg; /* Argument number. */
70 size_t prefix; /* Prefix string length. */
71 size_t skip; /* Skipped string length. */
72 size_t suffix; /* Suffix string length. */
73 } str[__NL_ARGMAX];
74 #endif
75 static int reenter; /* STATIC: Re-entrancy check. */
76 GS *gp;
77 WIN *wp = NULL;
78 size_t blen, len, mlen, nlen;
79 const char *p;
80 char *bp, *mp;
81 va_list ap;
82 #ifndef NL_ARGMAX
83 int ch;
84 char *rbp, *s_rbp;
85 const char *t, *u;
86 size_t cnt1, cnt2, soff;
87 #endif
88
89 /*
90 * !!!
91 * It's possible to enter msg when there's no screen to hold the
92 * message. If sp is NULL, ignore the special cases and put the
93 * message out to stderr.
94 */
95 if (sp == NULL) {
96 gp = NULL;
97 if (mt == M_BERR)
98 mt = M_ERR;
99 else if (mt == M_VINFO)
100 mt = M_INFO;
101 } else {
102 gp = sp->gp;
103 wp = sp->wp;
104 switch (mt) {
105 case M_BERR:
106 if (F_ISSET(sp, SC_VI) && !O_ISSET(sp, O_VERBOSE)) {
107 F_SET(gp, G_BELLSCHED);
108 return;
109 }
110 mt = M_ERR;
111 break;
112 case M_VINFO:
113 if (!O_ISSET(sp, O_VERBOSE))
114 return;
115 mt = M_INFO;
116 /* FALLTHROUGH */
117 case M_INFO:
118 if (F_ISSET(sp, SC_EX_SILENT))
119 return;
120 break;
121 case M_ERR:
122 case M_SYSERR:
123 case M_DBERR:
124 break;
125 default:
126 abort();
127 }
128 }
129
130 /*
131 * It's possible to reenter msg when it allocates space. We're
132 * probably dead anyway, but there's no reason to drop core.
133 *
134 * XXX
135 * Yes, there's a race, but it should only be two instructions.
136 */
137 if (reenter++)
138 return;
139
140 /* Get space for the message. */
141 nlen = 1024;
142 if (0) {
143 retry: FREE_SPACE(sp, bp, blen);
144 nlen *= 2;
145 }
146 bp = NULL;
147 blen = 0;
148 GET_SPACE_GOTOC(sp, bp, blen, nlen);
149
150 /*
151 * Error prefix.
152 *
153 * mp: pointer to the current next character to be written
154 * mlen: length of the already written characters
155 * blen: total length of the buffer
156 */
157 #define REM (blen - mlen)
158 mp = bp;
159 mlen = 0;
160 if (mt == M_SYSERR || mt == M_DBERR) {
161 p = msg_cat(sp, "020|Error: ", &len);
162 if (REM < len)
163 goto retry;
164 memcpy(mp, p, len);
165 mp += len;
166 mlen += len;
167 }
168
169 /*
170 * If we're running an ex command that the user didn't enter, display
171 * the file name and line number prefix.
172 */
173 if ((mt == M_ERR || mt == M_SYSERR) &&
174 sp != NULL && wp != NULL && wp->if_name != NULL) {
175 for (p = wp->if_name; *p != '\0'; ++p) {
176 len = snprintf(mp, REM, "%s", KEY_NAME(sp, *p));
177 mp += len;
178 if ((mlen += len) > blen)
179 goto retry;
180 }
181 len = snprintf(mp, REM, ", %d: ", wp->if_lno);
182 mp += len;
183 if ((mlen += len) > blen)
184 goto retry;
185 }
186
187 /* If nothing to format, we're done. */
188 if (fmt == NULL)
189 goto nofmt;
190 fmt = msg_cat(sp, fmt, NULL);
191
192 #ifndef NL_ARGMAX
193 /*
194 * Nvi should run on machines that don't support the numbered argument
195 * specifications (%[digit]*$). We do this by reformatting the string
196 * so that we can hand it to vsprintf(3) and it will use the arguments
197 * in the right order. When vsprintf returns, we put the string back
198 * into the right order. It's undefined, according to SVID III, to mix
199 * numbered argument specifications with the standard style arguments,
200 * so this should be safe.
201 *
202 * In addition, we also need a character that is known to not occur in
203 * any vi message, for separating the parts of the string. As callers
204 * of msgq are responsible for making sure that all the non-printable
205 * characters are formatted for printing before calling msgq, we use a
206 * random non-printable character selected at terminal initialization
207 * time. This code isn't fast by any means, but as messages should be
208 * relatively short and normally have only a few arguments, it won't be
209 * too bad. Regardless, nobody has come up with any other solution.
210 *
211 * The result of this loop is an array of pointers into the message
212 * string, with associated lengths and argument numbers. The array
213 * is in the "correct" order, and the arg field contains the argument
214 * order.
215 */
216 for (p = fmt, soff = 0; soff < __NL_ARGMAX;) {
217 for (t = p; *p != '\0' && *p != '%'; ++p);
218 if (*p == '\0')
219 break;
220 ++p;
221 if (!isdigit((unsigned char)*p)) {
222 if (*p == '%')
223 ++p;
224 continue;
225 }
226 for (u = p; *++p != '\0' && isdigit((unsigned char)*p););
227 if (*p != '$')
228 continue;
229
230 /* Up to, and including the % character. */
231 str[soff].str = t;
232 str[soff].prefix = u - t;
233
234 /* Up to, and including the $ character. */
235 str[soff].arg = atoi(u);
236 str[soff].skip = (p - u) + 1;
237 if (str[soff].arg >= __NL_ARGMAX)
238 goto ret;
239
240 /* Up to, and including the conversion character. */
241 for (u = p; (ch = (unsigned char)*++p) != '\0';)
242 if (isalpha(ch) &&
243 strchr("diouxXfeEgGcspn", ch) != NULL)
244 break;
245 str[soff].suffix = p - u;
246 if (ch != '\0')
247 ++p;
248 ++soff;
249 }
250
251 /* If no magic strings, we're done. */
252 if (soff == 0)
253 goto format;
254
255 /* Get space for the reordered strings. */
256 if ((rbp = malloc(nlen)) == NULL)
257 goto ret;
258 s_rbp = rbp;
259
260 /*
261 * Reorder the strings into the message string based on argument
262 * order.
263 *
264 * !!!
265 * We ignore arguments that are out of order, i.e. if we don't find
266 * an argument, we continue. Assume (almost certainly incorrectly)
267 * that whoever created the string knew what they were doing.
268 *
269 * !!!
270 * Brute force "sort", but since we don't expect more than one or two
271 * arguments in a string, the setup cost of a fast sort will be more
272 * expensive than the loop.
273 */
274 for (cnt1 = 1; cnt1 <= soff; ++cnt1)
275 for (cnt2 = 0; cnt2 < soff; ++cnt2)
276 if (cnt1 == str[cnt2].arg) {
277 memmove(s_rbp, str[cnt2].str, str[cnt2].prefix);
278 memmove(s_rbp + str[cnt2].prefix,
279 str[cnt2].str + str[cnt2].prefix +
280 str[cnt2].skip, str[cnt2].suffix);
281 s_rbp += str[cnt2].prefix + str[cnt2].suffix;
282 *s_rbp++ =
283 gp == NULL ? DEFAULT_NOPRINT : gp->noprint;
284 break;
285 }
286 *s_rbp = '\0';
287 fmt = rbp;
288 #endif
289
290 #ifndef NL_ARGMAX
291 format: /* Format the arguments into the string. */
292 #endif
293 #ifdef __STDC__
294 va_start(ap, fmt);
295 #else
296 va_start(ap);
297 #endif
298 len = vsnprintf(mp, REM, fmt, ap);
299 va_end(ap);
300 if (len >= nlen)
301 goto retry;
302
303 #ifndef NL_ARGMAX
304 if (soff == 0)
305 goto nofmt;
306
307 /*
308 * Go through the resulting string, and, for each separator character
309 * separated string, enter its new starting position and length in the
310 * array.
311 */
312 for (p = t = mp, cnt1 = 1,
313 ch = gp == NULL ? DEFAULT_NOPRINT : gp->noprint; *p != '\0'; ++p)
314 if (*p == ch) {
315 for (cnt2 = 0; cnt2 < soff; ++cnt2)
316 if (str[cnt2].arg == cnt1)
317 break;
318 str[cnt2].str = t;
319 str[cnt2].prefix = p - t;
320 t = p + 1;
321 ++cnt1;
322 }
323
324 /*
325 * Reorder the strings once again, putting them back into the
326 * message buffer.
327 *
328 * !!!
329 * Note, the length of the message gets decremented once for
330 * each substring, when we discard the separator character.
331 */
332 for (s_rbp = rbp, cnt1 = 0; cnt1 < soff; ++cnt1) {
333 memmove(rbp, str[cnt1].str, str[cnt1].prefix);
334 rbp += str[cnt1].prefix;
335 --len;
336 }
337 memmove(mp, s_rbp, rbp - s_rbp);
338
339 /* Free the reordered string memory. */
340 free(s_rbp);
341 #endif
342
343 nofmt: mp += len;
344 if ((mlen += len) > blen)
345 goto retry;
346 if (mt == M_SYSERR) {
347 len = snprintf(mp, REM, ": %s", strerror(errno));
348 mp += len;
349 if ((mlen += len) > blen)
350 goto retry;
351 mt = M_ERR;
352 }
353 if (mt == M_DBERR) {
354 len = snprintf(mp, REM, ": %s", db_strerror(sp->db_error));
355 mp += len;
356 if ((mlen += len) > blen)
357 goto retry;
358 mt = M_ERR;
359 }
360
361 /* Add trailing newline. */
362 if ((mlen += 1) > blen)
363 goto retry;
364 *mp = '\n';
365
366 if (sp != NULL && sp->ep != NULL)
367 (void)ex_fflush(sp);
368 if (wp != NULL)
369 wp->scr_msg(sp, mt, bp, mlen);
370 else
371 (void)fprintf(stderr, "%.*s", (int)mlen, bp);
372
373 /* Cleanup. */
374 #ifndef NL_ARGMAX
375 ret:
376 #endif
377 FREE_SPACE(sp, bp, blen);
378 alloc_err:
379 reenter = 0;
380 }
381
382 /*
383 * msgq_str --
384 * Display a message with an embedded string.
385 *
386 * PUBLIC: void msgq_wstr __P((SCR *, mtype_t, const CHAR_T *, const char *));
387 */
388 void
msgq_wstr(SCR * sp,mtype_t mtype,const CHAR_T * str,const char * fmt)389 msgq_wstr(SCR *sp, mtype_t mtype, const CHAR_T *str, const char *fmt)
390 {
391 size_t nlen;
392 const char *nstr;
393
394 if (str == NULL) {
395 msgq(sp, mtype, "%s", fmt);
396 return;
397 }
398 INT2CHAR(sp, str, STRLEN(str) + 1, nstr, nlen);
399 msgq_str(sp, mtype, nstr, fmt);
400 }
401
402 /*
403 * msgq_str --
404 * Display a message with an embedded string.
405 *
406 * PUBLIC: void msgq_str __P((SCR *, mtype_t, const char *, const char *));
407 */
408 void
msgq_str(SCR * sp,mtype_t mtype,const char * str,const char * fmt)409 msgq_str(SCR *sp, mtype_t mtype, const char *str, const char *fmt)
410 {
411 int nf, sv_errno;
412 char *p;
413
414 if (str == NULL) {
415 msgq(sp, mtype, "%s", fmt);
416 return;
417 }
418
419 sv_errno = errno;
420 p = msg_print(sp, str, &nf);
421 errno = sv_errno;
422 msgq(sp, mtype, fmt, p);
423 if (nf)
424 FREE_SPACE(sp, p, 0);
425 }
426
427 /*
428 * mod_rpt --
429 * Report on the lines that changed.
430 *
431 * !!!
432 * Historic vi documentation (USD:15-8) claimed that "The editor will also
433 * always tell you when a change you make affects text which you cannot see."
434 * This wasn't true -- edit a large file and do "100d|1". We don't implement
435 * this semantic since it requires tracking each line that changes during a
436 * command instead of just keeping count.
437 *
438 * Line counts weren't right in historic vi, either. For example, given the
439 * file:
440 * abc
441 * def
442 * the command 2d}, from the 'b' would report that two lines were deleted,
443 * not one.
444 *
445 * PUBLIC: void mod_rpt __P((SCR *));
446 */
447 void
mod_rpt(SCR * sp)448 mod_rpt(SCR *sp)
449 {
450 static const char * const action[] = {
451 "293|added",
452 "294|changed",
453 "295|deleted",
454 "296|joined",
455 "297|moved",
456 "298|shifted",
457 "299|yanked",
458 };
459 static const char * const lines[] = {
460 "300|line",
461 "301|lines",
462 };
463 db_recno_t total;
464 u_long rptval;
465 int first;
466 size_t cnt, blen, len, tlen;
467 const char *t;
468 const char * const *ap;
469 char *bp, *p;
470
471 /* Change reports are turned off in batch mode. */
472 if (F_ISSET(sp, SC_EX_SILENT))
473 return;
474
475 /* Reset changing line number. */
476 sp->rptlchange = OOBLNO;
477
478 /*
479 * Don't build a message if not enough changed.
480 *
481 * !!!
482 * And now, a vi clone test. Historically, vi reported if the number
483 * of changed lines was > than the value, not >=, unless it was a yank
484 * command, which used >=. No lie. Furthermore, an action was never
485 * reported for a single line action. This is consistent for actions
486 * other than yank, but yank didn't report single line actions even if
487 * the report edit option was set to 1. In addition, setting report to
488 * 0 in the 4BSD historic vi was equivalent to setting it to 1, for an
489 * unknown reason (this bug was fixed in System III/V at some point).
490 * I got complaints, so nvi conforms to System III/V historic practice
491 * except that we report a yank of 1 line if report is set to 1.
492 */
493 #define ARSIZE(a) sizeof(a) / sizeof (*a)
494 #define MAXNUM 25
495 rptval = O_VAL(sp, O_REPORT);
496 for (cnt = 0, total = 0; cnt < ARSIZE(action); ++cnt)
497 total += sp->rptlines[cnt];
498 if (total == 0)
499 return;
500 if (total <= rptval && sp->rptlines[L_YANKED] < rptval) {
501 for (cnt = 0; cnt < ARSIZE(action); ++cnt)
502 sp->rptlines[cnt] = 0;
503 return;
504 }
505
506 /* Build and display the message. */
507 GET_SPACE_GOTOC(sp, bp, blen, sizeof(action) * MAXNUM + 1);
508 for (p = bp, first = 1, tlen = 0,
509 ap = action, cnt = 0; cnt < ARSIZE(action); ++ap, ++cnt)
510 if (sp->rptlines[cnt] != 0) {
511 if (first)
512 first = 0;
513 else {
514 *p++ = ';';
515 *p++ = ' ';
516 tlen += 2;
517 }
518 len = snprintf(p, MAXNUM, "%lu ",
519 (unsigned long) sp->rptlines[cnt]);
520 p += len;
521 tlen += len;
522 t = msg_cat(sp,
523 lines[sp->rptlines[cnt] == 1 ? 0 : 1], &len);
524 memcpy(p, t, len);
525 p += len;
526 tlen += len;
527 *p++ = ' ';
528 ++tlen;
529 t = msg_cat(sp, *ap, &len);
530 memcpy(p, t, len);
531 p += len;
532 tlen += len;
533 sp->rptlines[cnt] = 0;
534 }
535
536 /* Add trailing newline. */
537 *p = '\n';
538 ++tlen;
539
540 (void)ex_fflush(sp);
541 sp->wp->scr_msg(sp, M_INFO, bp, tlen);
542
543 FREE_SPACE(sp, bp, blen);
544 alloc_err:
545 return;
546
547 #undef ARSIZE
548 #undef MAXNUM
549 }
550
551 /*
552 * msgq_status --
553 * Report on the file's status.
554 *
555 * PUBLIC: void msgq_status __P((SCR *, db_recno_t, u_int));
556 */
557 void
msgq_status(SCR * sp,db_recno_t lno,u_int flags)558 msgq_status(SCR *sp, db_recno_t lno, u_int flags)
559 {
560 db_recno_t last;
561 size_t blen, len;
562 int cnt, needsep;
563 const char *t;
564 char **ap, *bp, *np, *p, *s;
565
566 /* Get sufficient memory. */
567 len = strlen(sp->frp->name);
568 GET_SPACE_GOTOC(sp, bp, blen, len * MAX_CHARACTER_COLUMNS + 128);
569 p = bp;
570
571 /* Copy in the filename. */
572 for (p = bp, t = sp->frp->name; *t != '\0'; ++t) {
573 len = KEY_LEN(sp, *t);
574 memcpy(p, KEY_NAME(sp, *t), len);
575 p += len;
576 }
577 np = p;
578 *p++ = ':';
579 *p++ = ' ';
580
581 /* Copy in the argument count. */
582 if (F_ISSET(sp, SC_STATUS_CNT) && sp->argv != NULL) {
583 for (cnt = 0, ap = sp->argv; *ap != NULL; ++ap, ++cnt);
584 if (cnt > 1) {
585 (void)sprintf(p,
586 msg_cat(sp, "317|%d files to edit", NULL), cnt);
587 p += strlen(p);
588 *p++ = ':';
589 *p++ = ' ';
590 }
591 F_CLR(sp, SC_STATUS_CNT);
592 }
593
594 /*
595 * See nvi/exf.c:file_init() for a description of how and when the
596 * read-only bit is set.
597 *
598 * !!!
599 * The historic display for "name changed" was "[Not edited]".
600 */
601 needsep = 0;
602 if (F_ISSET(sp->frp, FR_NEWFILE)) {
603 F_CLR(sp->frp, FR_NEWFILE);
604 t = msg_cat(sp, "021|new file", &len);
605 memcpy(p, t, len);
606 p += len;
607 needsep = 1;
608 } else {
609 if (F_ISSET(sp->frp, FR_NAMECHANGE)) {
610 t = msg_cat(sp, "022|name changed", &len);
611 memcpy(p, t, len);
612 p += len;
613 needsep = 1;
614 }
615 if (needsep) {
616 *p++ = ',';
617 *p++ = ' ';
618 }
619 if (F_ISSET(sp->ep, F_MODIFIED))
620 t = msg_cat(sp, "023|modified", &len);
621 else
622 t = msg_cat(sp, "024|unmodified", &len);
623 memcpy(p, t, len);
624 p += len;
625 needsep = 1;
626 }
627 if (F_ISSET(sp->frp, FR_UNLOCKED)) {
628 if (needsep) {
629 *p++ = ',';
630 *p++ = ' ';
631 }
632 t = msg_cat(sp, "025|UNLOCKED", &len);
633 memcpy(p, t, len);
634 p += len;
635 needsep = 1;
636 }
637 if (O_ISSET(sp, O_READONLY)) {
638 if (needsep) {
639 *p++ = ',';
640 *p++ = ' ';
641 }
642 t = msg_cat(sp, "026|readonly", &len);
643 memcpy(p, t, len);
644 p += len;
645 needsep = 1;
646 }
647 if (needsep) {
648 *p++ = ':';
649 *p++ = ' ';
650 }
651 if (LF_ISSET(MSTAT_SHOWLAST)) {
652 if (db_last(sp, &last))
653 return;
654 if (last == 0) {
655 t = msg_cat(sp, "028|empty file", &len);
656 memcpy(p, t, len);
657 p += len;
658 } else {
659 t = msg_cat(sp, "027|line %lu of %lu [%ld%%]", &len);
660 (void)sprintf(p, t, lno, last,
661 (long)((lno * 100) / last));
662 p += strlen(p);
663 }
664 } else {
665 t = msg_cat(sp, "029|line %lu", &len);
666 (void)sprintf(p, t, lno);
667 p += strlen(p);
668 }
669 #ifdef DEBUG
670 (void)sprintf(p, " (pid %lu)", (u_long)getpid());
671 p += strlen(p);
672 #endif
673 *p++ = '\n';
674 len = p - bp;
675
676 /*
677 * There's a nasty problem with long path names. Cscope and tags files
678 * can result in long paths and vi will request a continuation key from
679 * the user as soon as it starts the screen. Unfortunately, the user
680 * has already typed ahead, and chaos results. If we assume that the
681 * characters in the filenames and informational messages only take a
682 * single screen column each, we can trim the filename.
683 *
684 * XXX
685 * Status lines get put up at fairly awkward times. For example, when
686 * you do a filter read (e.g., :read ! echo foo) in the top screen of a
687 * split screen, we have to repaint the status lines for all the screens
688 * below the top screen. We don't want users having to enter continue
689 * characters for those screens. Make it really hard to screw this up.
690 */
691 s = bp;
692 if (LF_ISSET(MSTAT_TRUNCATE) && len > sp->cols) {
693 for (; s < np && (*s != '/' || (size_t)(p - s) > sp->cols - 3); ++s);
694 if (s == np) {
695 s = p - (sp->cols - 5);
696 *--s = ' ';
697 }
698 *--s = '.';
699 *--s = '.';
700 *--s = '.';
701 len = p - s;
702 }
703
704 /* Flush any waiting ex messages. */
705 (void)ex_fflush(sp);
706
707 sp->wp->scr_msg(sp, M_INFO, s, len);
708
709 FREE_SPACE(sp, bp, blen);
710 alloc_err:
711 return;
712 }
713
714 /*
715 * msg_open --
716 * Open the message catalogs.
717 *
718 * PUBLIC: int msg_open __P((SCR *, const char *));
719 */
720 int
msg_open(SCR * sp,const char * file)721 msg_open(SCR *sp, const char *file)
722 {
723 /*
724 * !!!
725 * Assume that the first file opened is the system default, and that
726 * all subsequent ones user defined. Only display error messages
727 * if we can't open the user defined ones -- it's useful to know if
728 * the system one wasn't there, but if nvi is being shipped with an
729 * installed system, the file will be there, if it's not, then the
730 * message will be repeated every time nvi is started up.
731 */
732 static int first = 1;
733 DB *db;
734 DBT data, key;
735 db_recno_t msgno;
736 char buf[MAXPATHLEN];
737 const char *p, *t;
738
739 if ((p = strrchr(file, '/')) != NULL && p[1] == '\0' &&
740 (((t = getenv("LC_MESSAGES")) != NULL && t[0] != '\0') ||
741 ((t = getenv("LANG")) != NULL && t[0] != '\0'))) {
742 (void)snprintf(buf, sizeof(buf), "%s%s", file, t);
743 p = buf;
744 } else
745 p = file;
746 if (db_msg_open(sp, p, &db)) {
747 if (first) {
748 first = 0;
749 return (1);
750 }
751 msgq_str(sp, M_DBERR, p, "%s");
752 return (1);
753 }
754
755 /*
756 * Test record 1 for the magic string. The msgq call is here so
757 * the message catalog build finds it.
758 */
759 #define VMC "VI_MESSAGE_CATALOG"
760 memset(&key, 0, sizeof(key));
761 key.data = &msgno;
762 key.size = sizeof(db_recno_t);
763 memset(&data, 0, sizeof(data));
764 msgno = 1;
765 if ((sp->db_error = db_get_low(db, &key, &data, 0)) != 0 ||
766 data.size != sizeof(VMC) - 1 ||
767 memcmp(data.data, VMC, sizeof(VMC) - 1)) {
768 (void)db_close(db);
769 if (first) {
770 first = 0;
771 return (1);
772 }
773 msgq_str(sp, M_DBERR, p,
774 "030|The file %s is not a message catalog");
775 return (1);
776 }
777 first = 0;
778
779 if (sp->gp->msg != NULL)
780 (void)db_close(sp->gp->msg);
781 sp->gp->msg = db;
782 return (0);
783 }
784
785 /*
786 * msg_close --
787 * Close the message catalogs.
788 *
789 * PUBLIC: void msg_close __P((GS *));
790 */
791 void
msg_close(GS * gp)792 msg_close(GS *gp)
793 {
794 if (gp->msg != NULL) {
795 (void)db_close(gp->msg);
796 gp->msg = NULL;
797 }
798 }
799
800 /*
801 * msg_cont --
802 * Return common continuation messages.
803 *
804 * PUBLIC: const char *msg_cmsg __P((SCR *, cmsg_t, size_t *));
805 */
806 const char *
msg_cmsg(SCR * sp,cmsg_t which,size_t * lenp)807 msg_cmsg(SCR *sp, cmsg_t which, size_t *lenp)
808 {
809 switch (which) {
810 case CMSG_CONF:
811 return (msg_cat(sp, "268|confirm? [ynq]", lenp));
812 case CMSG_CONT:
813 return (msg_cat(sp, "269|Press any key to continue: ", lenp));
814 case CMSG_CONT_EX:
815 return (msg_cat(sp,
816 "270|Press any key to continue [: to enter more ex commands]: ",
817 lenp));
818 case CMSG_CONT_R:
819 return (msg_cat(sp, "161|Press Enter to continue: ", lenp));
820 case CMSG_CONT_S:
821 return (msg_cat(sp, "275| cont?", lenp));
822 case CMSG_CONT_Q:
823 return (msg_cat(sp,
824 "271|Press any key to continue [q to quit]: ", lenp));
825 default:
826 abort();
827 }
828 /* NOTREACHED */
829 }
830
831 /*
832 * msg_cat --
833 * Return a single message from the catalog, plus its length.
834 *
835 * !!!
836 * Only a single catalog message can be accessed at a time, if multiple
837 * ones are needed, they must be copied into local memory.
838 *
839 * PUBLIC: const char *msg_cat __P((SCR *, const char *, size_t *));
840 */
841 const char *
msg_cat(SCR * sp,const char * str,size_t * lenp)842 msg_cat(SCR *sp, const char *str, size_t *lenp)
843 {
844 GS *gp;
845 DBT data, key;
846 db_recno_t msgno;
847
848 /*
849 * If it's not a catalog message, i.e. has doesn't have a leading
850 * number and '|' symbol, we're done.
851 */
852 if (isdigit((unsigned char)str[0]) &&
853 isdigit((unsigned char)str[1]) && isdigit((unsigned char)str[2]) &&
854 str[3] == '|') {
855 memset(&key, 0, sizeof(key));
856 key.data = &msgno;
857 key.size = sizeof(db_recno_t);
858 memset(&data, 0, sizeof(data));
859 msgno = atoi(str);
860
861 /*
862 * XXX
863 * Really sleazy hack -- we put an extra character on the
864 * end of the format string, and then we change it to be
865 * the nul termination of the string. There ought to be
866 * a better way. Once we can allocate multiple temporary
867 * memory buffers, maybe we can use one of them instead.
868 */
869 gp = sp == NULL ? NULL : sp->gp;
870 if (gp != NULL && gp->msg != NULL &&
871 db_get_low(gp->msg, &key, &data, 0) == 0 &&
872 data.size != 0) {
873 if (lenp != NULL)
874 *lenp = data.size - 1;
875 ((char *)data.data)[data.size - 1] = '\0';
876 return (data.data);
877 }
878 str = &str[4];
879 }
880 if (lenp != NULL)
881 *lenp = strlen(str);
882 return (str);
883 }
884
885 /*
886 * msg_print --
887 * Return a printable version of a string, in allocated memory.
888 *
889 * PUBLIC: char *msg_print __P((SCR *, const char *, int *));
890 */
891 char *
msg_print(SCR * sp,const char * s,int * needfree)892 msg_print(SCR *sp, const char *s, int *needfree)
893 {
894 size_t blen, nlen;
895 const char *cp;
896 char *bp, *ep, *p;
897 unsigned char *t;
898
899 *needfree = 0;
900
901 for (cp = s; *cp != '\0'; ++cp)
902 if (!isprint((unsigned char)*cp))
903 break;
904 if (*cp == '\0')
905 return ((char *)__UNCONST(s)); /* SAFE: needfree set to 0. */
906
907 nlen = 0;
908 if (0) {
909 retry: if (sp == NULL)
910 free(bp);
911 else
912 FREE_SPACE(sp, bp, blen);
913 *needfree = 0;
914 }
915 nlen += 256;
916 if (sp == NULL) {
917 if ((bp = malloc(nlen)) == NULL)
918 goto alloc_err;
919 } else
920 GET_SPACE_GOTOC(sp, bp, blen, nlen);
921 if (0) {
922 alloc_err: return __UNCONST("");
923 }
924 *needfree = 1;
925
926 for (p = bp, ep = (bp + blen) - 1, cp = s; *cp != '\0' && p < ep; ++cp)
927 for (t = KEY_NAME(sp, *cp); *t != '\0' && p < ep; *p++ = *t++);
928 if (p == ep)
929 goto retry;
930 *p = '\0';
931 return (bp);
932 }
933