Commit | Line | Data |
---|---|---|
70190965 JB |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
5a6c967e | 8 | static char *sccsid = "@(#)ex_temp.c 7.6 (Berkeley) %G%"; |
70190965 JB |
9 | #endif not lint |
10 | ||
d4a8288f MH |
11 | #include "ex.h" |
12 | #include "ex_temp.h" | |
13 | #include "ex_vis.h" | |
14 | #include "ex_tty.h" | |
15 | ||
16 | /* | |
17 | * Editor temporary file routines. | |
18 | * Very similar to those of ed, except uses 2 input buffers. | |
19 | */ | |
20 | #define READ 0 | |
21 | #define WRITE 1 | |
22 | ||
5a6c967e CH |
23 | #ifndef vms |
24 | #define EPOSITION 7 | |
25 | #else | |
26 | #define EPOSITION 13 | |
27 | #endif | |
28 | ||
d4a8288f MH |
29 | char tfname[40]; |
30 | char rfname[40]; | |
31 | int havetmp; | |
cb3ac212 | 32 | short tfile = -1; |
d4a8288f MH |
33 | short rfile = -1; |
34 | ||
35 | fileinit() | |
36 | { | |
37 | register char *p; | |
38 | register int i, j; | |
39 | struct stat stbuf; | |
40 | ||
44232d5b | 41 | if (tline == INCRMT * (HBLKS+2)) |
d4a8288f MH |
42 | return; |
43 | cleanup(0); | |
5a6c967e CH |
44 | if (tfile >= 0) |
45 | close(tfile); | |
44232d5b MH |
46 | tline = INCRMT * (HBLKS+2); |
47 | blocks[0] = HBLKS; | |
48 | blocks[1] = HBLKS+1; | |
d4a8288f MH |
49 | blocks[2] = -1; |
50 | dirtcnt = 0; | |
51 | iblock = -1; | |
52 | iblock2 = -1; | |
53 | oblock = -1; | |
54 | CP(tfname, svalue(DIRECTORY)); | |
5a6c967e CH |
55 | #ifndef vms |
56 | if (stat(tfname, &stbuf)) | |
57 | #else | |
58 | goto vms_no_check_dir; | |
59 | #endif | |
60 | { | |
d4a8288f MH |
61 | dumbness: |
62 | if (setexit() == 0) | |
63 | filioerr(tfname); | |
64 | else | |
65 | putNFL(); | |
66 | cleanup(1); | |
5a6c967e | 67 | ex_exit(1); |
d4a8288f | 68 | } |
5a6c967e | 69 | #ifndef vms |
d4a8288f MH |
70 | if ((stbuf.st_mode & S_IFMT) != S_IFDIR) { |
71 | errno = ENOTDIR; | |
72 | goto dumbness; | |
73 | } | |
5a6c967e CH |
74 | #else |
75 | vms_no_check_dir: | |
76 | #endif | |
d4a8288f MH |
77 | ichanged = 0; |
78 | ichang2 = 0; | |
5a6c967e | 79 | #ifndef vms |
d4a8288f | 80 | ignore(strcat(tfname, "/ExXXXXX")); |
5a6c967e CH |
81 | #else |
82 | ignore(strcat(tfname, "ExXXXXX")); | |
83 | #endif | |
d4a8288f MH |
84 | for (p = strend(tfname), i = 5, j = getpid(); i > 0; i--, j /= 10) |
85 | *--p = j % 10 | '0'; | |
5a6c967e CH |
86 | #ifdef vms |
87 | ignore(strcat(tfname, ".txt.1")); | |
88 | unlink(tfname); | |
89 | #endif | |
d4a8288f MH |
90 | tfile = creat(tfname, 0600); |
91 | if (tfile < 0) | |
92 | goto dumbness; | |
7c4625ef MH |
93 | #ifdef VMUNIX |
94 | { | |
95 | extern stilinc; /* see below */ | |
96 | stilinc = 0; | |
97 | } | |
98 | #endif | |
d4a8288f | 99 | havetmp = 1; |
5a6c967e CH |
100 | if (tfile >= 0) |
101 | close(tfile); | |
d4a8288f MH |
102 | tfile = open(tfname, 2); |
103 | if (tfile < 0) | |
104 | goto dumbness; | |
5a6c967e | 105 | #ifdef UNIX_SBRK |
d4a8288f | 106 | /* brk((char *)fendcore); */ |
5a6c967e | 107 | #endif |
d4a8288f MH |
108 | } |
109 | ||
110 | cleanup(all) | |
111 | bool all; | |
112 | { | |
113 | if (all) { | |
114 | putpad(TE); | |
115 | flush(); | |
116 | } | |
5a6c967e CH |
117 | if (havetmp) { |
118 | if (tfile >= 0) | |
119 | close(tfile); | |
d4a8288f | 120 | unlink(tfname); |
5a6c967e | 121 | } |
d4a8288f MH |
122 | havetmp = 0; |
123 | if (all && rfile >= 0) { | |
5a6c967e CH |
124 | if (rfile >= 0) |
125 | close(rfile); | |
d4a8288f | 126 | unlink(rfname); |
d4a8288f MH |
127 | rfile = -1; |
128 | } | |
129 | } | |
130 | ||
131 | getline(tl) | |
132 | line tl; | |
133 | { | |
134 | register char *bp, *lp; | |
135 | register int nl; | |
136 | ||
137 | lp = linebuf; | |
138 | bp = getblock(tl, READ); | |
139 | nl = nleft; | |
140 | tl &= ~OFFMSK; | |
141 | while (*lp++ = *bp++) | |
142 | if (--nl == 0) { | |
143 | bp = getblock(tl += INCRMT, READ); | |
144 | nl = nleft; | |
145 | } | |
146 | } | |
147 | ||
148 | putline() | |
149 | { | |
150 | register char *bp, *lp; | |
151 | register int nl; | |
152 | line tl; | |
153 | ||
154 | dirtcnt++; | |
155 | lp = linebuf; | |
156 | change(); | |
157 | tl = tline; | |
158 | bp = getblock(tl, WRITE); | |
159 | nl = nleft; | |
160 | tl &= ~OFFMSK; | |
161 | while (*bp = *lp++) { | |
162 | if (*bp++ == '\n') { | |
163 | *--bp = 0; | |
164 | linebp = lp; | |
165 | break; | |
166 | } | |
167 | if (--nl == 0) { | |
168 | bp = getblock(tl += INCRMT, WRITE); | |
169 | nl = nleft; | |
170 | } | |
171 | } | |
172 | tl = tline; | |
173 | tline += (((lp - linebuf) + BNDRY - 1) >> SHFT) & 077776; | |
174 | return (tl); | |
175 | } | |
176 | ||
177 | int read(); | |
178 | int write(); | |
179 | ||
180 | char * | |
181 | getblock(atl, iof) | |
182 | line atl; | |
183 | int iof; | |
184 | { | |
185 | register int bno, off; | |
5a6c967e | 186 | #ifdef CRYPT |
d266c416 MH |
187 | register char *p1, *p2; |
188 | register int n; | |
5a6c967e | 189 | #endif |
d4a8288f MH |
190 | |
191 | bno = (atl >> OFFBTS) & BLKMSK; | |
192 | off = (atl << SHFT) & LBTMSK; | |
193 | if (bno >= NMBLKS) | |
194 | error(" Tmp file too large"); | |
195 | nleft = BUFSIZ - off; | |
196 | if (bno == iblock) { | |
197 | ichanged |= iof; | |
198 | hitin2 = 0; | |
199 | return (ibuff + off); | |
200 | } | |
201 | if (bno == iblock2) { | |
202 | ichang2 |= iof; | |
203 | hitin2 = 1; | |
204 | return (ibuff2 + off); | |
205 | } | |
206 | if (bno == oblock) | |
207 | return (obuff + off); | |
208 | if (iof == READ) { | |
209 | if (hitin2 == 0) { | |
d266c416 | 210 | if (ichang2) { |
d4a8288f | 211 | blkio(iblock2, ibuff2, write); |
d266c416 | 212 | } |
d4a8288f MH |
213 | ichang2 = 0; |
214 | iblock2 = bno; | |
215 | blkio(bno, ibuff2, read); | |
216 | hitin2 = 1; | |
217 | return (ibuff2 + off); | |
218 | } | |
219 | hitin2 = 0; | |
d266c416 | 220 | if (ichanged) { |
d4a8288f | 221 | blkio(iblock, ibuff, write); |
d266c416 | 222 | } |
d4a8288f MH |
223 | ichanged = 0; |
224 | iblock = bno; | |
225 | blkio(bno, ibuff, read); | |
226 | return (ibuff + off); | |
227 | } | |
d266c416 | 228 | if (oblock >= 0) { |
d266c416 MH |
229 | blkio(oblock, obuff, write); |
230 | } | |
d4a8288f MH |
231 | oblock = bno; |
232 | return (obuff + off); | |
233 | } | |
234 | ||
7c4625ef | 235 | #ifdef VMUNIX |
5a6c967e CH |
236 | #ifdef vms |
237 | #define INCORB 32 | |
238 | #else | |
7c4625ef | 239 | #define INCORB 64 |
5a6c967e | 240 | #endif |
7c4625ef MH |
241 | char incorb[INCORB+1][BUFSIZ]; |
242 | #define pagrnd(a) ((char *)(((int)a)&~(BUFSIZ-1))) | |
243 | int stilinc; /* up to here not written yet */ | |
244 | #endif | |
245 | ||
d4a8288f MH |
246 | blkio(b, buf, iofcn) |
247 | short b; | |
248 | char *buf; | |
249 | int (*iofcn)(); | |
250 | { | |
251 | ||
7c4625ef MH |
252 | #ifdef VMUNIX |
253 | if (b < INCORB) { | |
254 | if (iofcn == read) { | |
255 | bcopy(pagrnd(incorb[b+1]), buf, BUFSIZ); | |
256 | return; | |
257 | } | |
258 | bcopy(buf, pagrnd(incorb[b+1]), BUFSIZ); | |
259 | if (laste) { | |
260 | if (b >= stilinc) | |
261 | stilinc = b + 1; | |
262 | return; | |
263 | } | |
264 | } else if (stilinc) | |
265 | tflush(); | |
266 | #endif | |
d4a8288f MH |
267 | lseek(tfile, (long) (unsigned) b * BUFSIZ, 0); |
268 | if ((*iofcn)(tfile, buf, BUFSIZ) != BUFSIZ) | |
269 | filioerr(tfname); | |
270 | } | |
271 | ||
7c4625ef MH |
272 | #ifdef VMUNIX |
273 | tlaste() | |
274 | { | |
275 | ||
276 | if (stilinc) | |
277 | dirtcnt = 0; | |
278 | } | |
279 | ||
280 | tflush() | |
281 | { | |
282 | int i = stilinc; | |
283 | ||
284 | stilinc = 0; | |
285 | lseek(tfile, (long) 0, 0); | |
286 | if (write(tfile, pagrnd(incorb[1]), i * BUFSIZ) != (i * BUFSIZ)) | |
287 | filioerr(tfname); | |
288 | } | |
289 | #endif | |
290 | ||
d4a8288f MH |
291 | /* |
292 | * Synchronize the state of the temporary file in case | |
293 | * a crash occurs. | |
294 | */ | |
295 | synctmp() | |
296 | { | |
297 | register int cnt; | |
298 | register line *a; | |
299 | register short *bp; | |
300 | ||
7c4625ef MH |
301 | #ifdef VMUNIX |
302 | if (stilinc) | |
303 | return; | |
304 | #endif | |
d4a8288f MH |
305 | if (dol == zero) |
306 | return; | |
307 | if (ichanged) | |
308 | blkio(iblock, ibuff, write); | |
309 | ichanged = 0; | |
310 | if (ichang2) | |
311 | blkio(iblock2, ibuff2, write); | |
312 | ichang2 = 0; | |
313 | if (oblock != -1) | |
314 | blkio(oblock, obuff, write); | |
315 | time(&H.Time); | |
316 | uid = getuid(); | |
317 | *zero = (line) H.Time; | |
318 | for (a = zero, bp = blocks; a <= dol; a += BUFSIZ / sizeof *a, bp++) { | |
319 | if (*bp < 0) { | |
320 | tline = (tline + OFFMSK) &~ OFFMSK; | |
321 | *bp = ((tline >> OFFBTS) & BLKMSK); | |
d266c416 MH |
322 | if (*bp > NMBLKS) |
323 | error(" Tmp file too large"); | |
d4a8288f MH |
324 | tline += INCRMT; |
325 | oblock = *bp + 1; | |
326 | bp[1] = -1; | |
327 | } | |
328 | lseek(tfile, (long) (unsigned) *bp * BUFSIZ, 0); | |
329 | cnt = ((dol - a) + 2) * sizeof (line); | |
330 | if (cnt > BUFSIZ) | |
331 | cnt = BUFSIZ; | |
332 | if (write(tfile, (char *) a, cnt) != cnt) { | |
333 | oops: | |
334 | *zero = 0; | |
335 | filioerr(tfname); | |
336 | } | |
337 | *zero = 0; | |
338 | } | |
339 | flines = lineDOL(); | |
340 | lseek(tfile, 0l, 0); | |
341 | if (write(tfile, (char *) &H, sizeof H) != sizeof H) | |
342 | goto oops; | |
a7a51e4a SL |
343 | #ifdef notdef |
344 | /* | |
345 | * This will insure that exrecover gets as much | |
346 | * back after a crash as is absolutely possible, | |
347 | * but can result in pregnant pauses between commands | |
348 | * when the TSYNC call is made, so... | |
349 | */ | |
5a6c967e | 350 | #ifndef vms |
a7a51e4a SL |
351 | (void) fsync(tfile); |
352 | #endif | |
5a6c967e | 353 | #endif |
d4a8288f MH |
354 | } |
355 | ||
356 | TSYNC() | |
357 | { | |
358 | ||
299f2784 | 359 | if (dirtcnt > MAXDIRT) { /* mjm: 12 --> MAXDIRT */ |
7c4625ef MH |
360 | #ifdef VMUNIX |
361 | if (stilinc) | |
362 | tflush(); | |
363 | #endif | |
d4a8288f MH |
364 | dirtcnt = 0; |
365 | synctmp(); | |
366 | } | |
367 | } | |
368 | ||
369 | /* | |
370 | * Named buffer routines. | |
371 | * These are implemented differently than the main buffer. | |
372 | * Each named buffer has a chain of blocks in the register file. | |
373 | * Each block contains roughly 508 chars of text, | |
374 | * and a previous and next block number. We also have information | |
375 | * about which blocks came from deletes of multiple partial lines, | |
376 | * e.g. deleting a sentence or a LISP object. | |
377 | * | |
378 | * We maintain a free map for the temp file. To free the blocks | |
379 | * in a register we must read the blocks to find how they are chained | |
380 | * together. | |
381 | * | |
382 | * BUG: The default savind of deleted lines in numbered | |
383 | * buffers may be rather inefficient; it hasn't been profiled. | |
384 | */ | |
385 | struct strreg { | |
386 | short rg_flags; | |
387 | short rg_nleft; | |
388 | short rg_first; | |
389 | short rg_last; | |
390 | } strregs[('z'-'a'+1) + ('9'-'0'+1)], *strp; | |
391 | ||
392 | struct rbuf { | |
393 | short rb_prev; | |
394 | short rb_next; | |
395 | char rb_text[BUFSIZ - 2 * sizeof (short)]; | |
3c7b865a | 396 | } *rbuf, KILLrbuf, putrbuf, YANKrbuf, regrbuf; |
887e3e0d MH |
397 | #ifdef VMUNIX |
398 | short rused[256]; | |
399 | #else | |
d4a8288f | 400 | short rused[32]; |
887e3e0d | 401 | #endif |
d4a8288f MH |
402 | short rnleft; |
403 | short rblock; | |
404 | short rnext; | |
405 | char *rbufcp; | |
406 | ||
407 | regio(b, iofcn) | |
408 | short b; | |
409 | int (*iofcn)(); | |
410 | { | |
411 | ||
412 | if (rfile == -1) { | |
413 | CP(rfname, tfname); | |
5a6c967e | 414 | *(strend(rfname) - EPOSITION) = 'R'; |
d4a8288f MH |
415 | rfile = creat(rfname, 0600); |
416 | if (rfile < 0) | |
417 | oops: | |
418 | filioerr(rfname); | |
5a6c967e CH |
419 | else |
420 | close(rfile); | |
d4a8288f MH |
421 | rfile = open(rfname, 2); |
422 | if (rfile < 0) | |
423 | goto oops; | |
424 | } | |
425 | lseek(rfile, (long) b * BUFSIZ, 0); | |
426 | if ((*iofcn)(rfile, rbuf, BUFSIZ) != BUFSIZ) | |
427 | goto oops; | |
428 | rblock = b; | |
429 | } | |
430 | ||
431 | REGblk() | |
432 | { | |
433 | register int i, j, m; | |
434 | ||
435 | for (i = 0; i < sizeof rused / sizeof rused[0]; i++) { | |
436 | m = (rused[i] ^ 0177777) & 0177777; | |
437 | if (i == 0) | |
438 | m &= ~1; | |
439 | if (m != 0) { | |
440 | j = 0; | |
441 | while ((m & 1) == 0) | |
442 | j++, m >>= 1; | |
443 | rused[i] |= (1 << j); | |
444 | #ifdef RDEBUG | |
5a6c967e | 445 | ex_printf("allocating block %d\n", i * 16 + j); |
d4a8288f MH |
446 | #endif |
447 | return (i * 16 + j); | |
448 | } | |
449 | } | |
450 | error("Out of register space (ugh)"); | |
451 | /*NOTREACHED*/ | |
452 | } | |
453 | ||
454 | struct strreg * | |
455 | mapreg(c) | |
456 | register int c; | |
457 | { | |
458 | ||
459 | if (isupper(c)) | |
460 | c = tolower(c); | |
461 | return (isdigit(c) ? &strregs[('z'-'a'+1)+(c-'0')] : &strregs[c-'a']); | |
462 | } | |
463 | ||
464 | int shread(); | |
465 | ||
466 | KILLreg(c) | |
467 | register int c; | |
468 | { | |
d4a8288f MH |
469 | register struct strreg *sp; |
470 | ||
3c7b865a | 471 | rbuf = &KILLrbuf; |
d4a8288f MH |
472 | sp = mapreg(c); |
473 | rblock = sp->rg_first; | |
474 | sp->rg_first = sp->rg_last = 0; | |
475 | sp->rg_flags = sp->rg_nleft = 0; | |
476 | while (rblock != 0) { | |
477 | #ifdef RDEBUG | |
5a6c967e | 478 | ex_printf("freeing block %d\n", rblock); |
d4a8288f MH |
479 | #endif |
480 | rused[rblock / 16] &= ~(1 << (rblock % 16)); | |
481 | regio(rblock, shread); | |
482 | rblock = rbuf->rb_next; | |
483 | } | |
484 | } | |
485 | ||
486 | /*VARARGS*/ | |
487 | shread() | |
488 | { | |
489 | struct front { short a; short b; }; | |
490 | ||
491 | if (read(rfile, (char *) rbuf, sizeof (struct front)) == sizeof (struct front)) | |
492 | return (sizeof (struct rbuf)); | |
493 | return (0); | |
494 | } | |
495 | ||
496 | int getREG(); | |
497 | ||
498 | putreg(c) | |
499 | char c; | |
500 | { | |
d4a8288f MH |
501 | register line *odot = dot; |
502 | register line *odol = dol; | |
503 | register int cnt; | |
504 | ||
505 | deletenone(); | |
506 | appendnone(); | |
3c7b865a | 507 | rbuf = &putrbuf; |
d4a8288f MH |
508 | rnleft = 0; |
509 | rblock = 0; | |
510 | rnext = mapreg(c)->rg_first; | |
511 | if (rnext == 0) { | |
512 | if (inopen) { | |
513 | splitw++; | |
514 | vclean(); | |
515 | vgoto(WECHO, 0); | |
516 | } | |
517 | vreg = -1; | |
518 | error("Nothing in register %c", c); | |
519 | } | |
520 | if (inopen && partreg(c)) { | |
887e3e0d MH |
521 | if (!FIXUNDO) { |
522 | splitw++; vclean(); vgoto(WECHO, 0); vreg = -1; | |
523 | error("Can't put partial line inside macro"); | |
524 | } | |
d4a8288f MH |
525 | squish(); |
526 | addr1 = addr2 = dol; | |
527 | } | |
887e3e0d | 528 | cnt = append(getREG, addr2); |
d4a8288f MH |
529 | if (inopen && partreg(c)) { |
530 | unddol = dol; | |
531 | dol = odol; | |
532 | dot = odot; | |
533 | pragged(0); | |
534 | } | |
d4a8288f MH |
535 | killcnt(cnt); |
536 | notecnt = cnt; | |
537 | } | |
538 | ||
539 | partreg(c) | |
540 | char c; | |
541 | { | |
542 | ||
543 | return (mapreg(c)->rg_flags); | |
544 | } | |
545 | ||
546 | notpart(c) | |
547 | register int c; | |
548 | { | |
549 | ||
550 | if (c) | |
551 | mapreg(c)->rg_flags = 0; | |
552 | } | |
553 | ||
554 | getREG() | |
555 | { | |
556 | register char *lp = linebuf; | |
557 | register int c; | |
558 | ||
559 | for (;;) { | |
560 | if (rnleft == 0) { | |
561 | if (rnext == 0) | |
562 | return (EOF); | |
563 | regio(rnext, read); | |
564 | rnext = rbuf->rb_next; | |
565 | rbufcp = rbuf->rb_text; | |
566 | rnleft = sizeof rbuf->rb_text; | |
567 | } | |
568 | c = *rbufcp; | |
569 | if (c == 0) | |
570 | return (EOF); | |
571 | rbufcp++, --rnleft; | |
572 | if (c == '\n') { | |
573 | *lp++ = 0; | |
574 | return (0); | |
575 | } | |
576 | *lp++ = c; | |
577 | } | |
578 | } | |
579 | ||
580 | YANKreg(c) | |
581 | register int c; | |
582 | { | |
d4a8288f MH |
583 | register line *addr; |
584 | register struct strreg *sp; | |
f0f2d980 | 585 | char savelb[LBSIZE]; |
d4a8288f MH |
586 | |
587 | if (isdigit(c)) | |
588 | kshift(); | |
589 | if (islower(c)) | |
590 | KILLreg(c); | |
591 | strp = sp = mapreg(c); | |
592 | sp->rg_flags = inopen && cursor && wcursor; | |
3c7b865a | 593 | rbuf = &YANKrbuf; |
d4a8288f MH |
594 | if (sp->rg_last) { |
595 | regio(sp->rg_last, read); | |
596 | rnleft = sp->rg_nleft; | |
597 | rbufcp = &rbuf->rb_text[sizeof rbuf->rb_text - rnleft]; | |
598 | } else { | |
599 | rblock = 0; | |
600 | rnleft = 0; | |
601 | } | |
f0f2d980 | 602 | CP(savelb,linebuf); |
d4a8288f MH |
603 | for (addr = addr1; addr <= addr2; addr++) { |
604 | getline(*addr); | |
605 | if (sp->rg_flags) { | |
606 | if (addr == addr2) | |
607 | *wcursor = 0; | |
608 | if (addr == addr1) | |
609 | strcpy(linebuf, cursor); | |
610 | } | |
611 | YANKline(); | |
612 | } | |
613 | rbflush(); | |
614 | killed(); | |
f0f2d980 | 615 | CP(linebuf,savelb); |
d4a8288f MH |
616 | } |
617 | ||
618 | kshift() | |
619 | { | |
620 | register int i; | |
621 | ||
622 | KILLreg('9'); | |
623 | for (i = '8'; i >= '0'; i--) | |
624 | copy(mapreg(i+1), mapreg(i), sizeof (struct strreg)); | |
625 | } | |
626 | ||
627 | YANKline() | |
628 | { | |
629 | register char *lp = linebuf; | |
630 | register struct rbuf *rp = rbuf; | |
631 | register int c; | |
632 | ||
633 | do { | |
634 | c = *lp++; | |
635 | if (c == 0) | |
636 | c = '\n'; | |
637 | if (rnleft == 0) { | |
638 | rp->rb_next = REGblk(); | |
639 | rbflush(); | |
640 | rblock = rp->rb_next; | |
641 | rp->rb_next = 0; | |
642 | rp->rb_prev = rblock; | |
643 | rnleft = sizeof rp->rb_text; | |
644 | rbufcp = rp->rb_text; | |
645 | } | |
646 | *rbufcp++ = c; | |
647 | --rnleft; | |
648 | } while (c != '\n'); | |
649 | if (rnleft) | |
650 | *rbufcp = 0; | |
651 | } | |
652 | ||
653 | rbflush() | |
654 | { | |
655 | register struct strreg *sp = strp; | |
656 | ||
657 | if (rblock == 0) | |
658 | return; | |
659 | regio(rblock, write); | |
660 | if (sp->rg_first == 0) | |
661 | sp->rg_first = rblock; | |
662 | sp->rg_last = rblock; | |
663 | sp->rg_nleft = rnleft; | |
664 | } | |
665 | ||
666 | /* Register c to char buffer buf of size buflen */ | |
667 | regbuf(c, buf, buflen) | |
668 | char c; | |
669 | char *buf; | |
670 | int buflen; | |
671 | { | |
d4a8288f MH |
672 | register char *p, *lp; |
673 | ||
3c7b865a | 674 | rbuf = ®rbuf; |
d4a8288f MH |
675 | rnleft = 0; |
676 | rblock = 0; | |
677 | rnext = mapreg(c)->rg_first; | |
678 | if (rnext==0) { | |
679 | *buf = 0; | |
680 | error("Nothing in register %c",c); | |
681 | } | |
682 | p = buf; | |
683 | while (getREG()==0) { | |
684 | for (lp=linebuf; *lp;) { | |
685 | if (p >= &buf[buflen]) | |
686 | error("Register too long@to fit in memory"); | |
687 | *p++ = *lp++; | |
688 | } | |
689 | *p++ = '\n'; | |
690 | } | |
691 | if (partreg(c)) p--; | |
692 | *p = '\0'; | |
693 | getDOT(); | |
694 | } | |
d266c416 MH |
695 | |
696 | /* | |
697 | * Encryption routines. These are essentially unmodified from ed. | |
698 | */ | |
699 |