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 | |
435e8dff | 8 | static char *sccsid = "@(#)ex_temp.c 7.7 (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" | |
435e8dff | 15 | #include "pathnames.h" |
d4a8288f MH |
16 | |
17 | /* | |
18 | * Editor temporary file routines. | |
19 | * Very similar to those of ed, except uses 2 input buffers. | |
20 | */ | |
21 | #define READ 0 | |
22 | #define WRITE 1 | |
23 | ||
5a6c967e CH |
24 | #ifndef vms |
25 | #define EPOSITION 7 | |
26 | #else | |
27 | #define EPOSITION 13 | |
28 | #endif | |
29 | ||
d4a8288f MH |
30 | char tfname[40]; |
31 | char rfname[40]; | |
32 | int havetmp; | |
cb3ac212 | 33 | short tfile = -1; |
d4a8288f MH |
34 | short rfile = -1; |
35 | ||
36 | fileinit() | |
37 | { | |
38 | register char *p; | |
39 | register int i, j; | |
40 | struct stat stbuf; | |
41 | ||
44232d5b | 42 | if (tline == INCRMT * (HBLKS+2)) |
d4a8288f MH |
43 | return; |
44 | cleanup(0); | |
5a6c967e CH |
45 | if (tfile >= 0) |
46 | close(tfile); | |
44232d5b MH |
47 | tline = INCRMT * (HBLKS+2); |
48 | blocks[0] = HBLKS; | |
49 | blocks[1] = HBLKS+1; | |
d4a8288f MH |
50 | blocks[2] = -1; |
51 | dirtcnt = 0; | |
52 | iblock = -1; | |
53 | iblock2 = -1; | |
54 | oblock = -1; | |
55 | CP(tfname, svalue(DIRECTORY)); | |
5a6c967e CH |
56 | #ifndef vms |
57 | if (stat(tfname, &stbuf)) | |
58 | #else | |
59 | goto vms_no_check_dir; | |
60 | #endif | |
61 | { | |
d4a8288f MH |
62 | dumbness: |
63 | if (setexit() == 0) | |
64 | filioerr(tfname); | |
65 | else | |
66 | putNFL(); | |
67 | cleanup(1); | |
5a6c967e | 68 | ex_exit(1); |
d4a8288f | 69 | } |
5a6c967e | 70 | #ifndef vms |
d4a8288f MH |
71 | if ((stbuf.st_mode & S_IFMT) != S_IFDIR) { |
72 | errno = ENOTDIR; | |
73 | goto dumbness; | |
74 | } | |
5a6c967e CH |
75 | #else |
76 | vms_no_check_dir: | |
77 | #endif | |
d4a8288f MH |
78 | ichanged = 0; |
79 | ichang2 = 0; | |
5a6c967e | 80 | #ifndef vms |
d4a8288f | 81 | ignore(strcat(tfname, "/ExXXXXX")); |
5a6c967e CH |
82 | #else |
83 | ignore(strcat(tfname, "ExXXXXX")); | |
84 | #endif | |
d4a8288f MH |
85 | for (p = strend(tfname), i = 5, j = getpid(); i > 0; i--, j /= 10) |
86 | *--p = j % 10 | '0'; | |
5a6c967e CH |
87 | #ifdef vms |
88 | ignore(strcat(tfname, ".txt.1")); | |
89 | unlink(tfname); | |
90 | #endif | |
d4a8288f MH |
91 | tfile = creat(tfname, 0600); |
92 | if (tfile < 0) | |
93 | goto dumbness; | |
7c4625ef MH |
94 | #ifdef VMUNIX |
95 | { | |
96 | extern stilinc; /* see below */ | |
97 | stilinc = 0; | |
98 | } | |
99 | #endif | |
d4a8288f | 100 | havetmp = 1; |
5a6c967e CH |
101 | if (tfile >= 0) |
102 | close(tfile); | |
d4a8288f MH |
103 | tfile = open(tfname, 2); |
104 | if (tfile < 0) | |
105 | goto dumbness; | |
5a6c967e | 106 | #ifdef UNIX_SBRK |
d4a8288f | 107 | /* brk((char *)fendcore); */ |
5a6c967e | 108 | #endif |
d4a8288f MH |
109 | } |
110 | ||
111 | cleanup(all) | |
112 | bool all; | |
113 | { | |
114 | if (all) { | |
115 | putpad(TE); | |
116 | flush(); | |
117 | } | |
5a6c967e CH |
118 | if (havetmp) { |
119 | if (tfile >= 0) | |
120 | close(tfile); | |
d4a8288f | 121 | unlink(tfname); |
5a6c967e | 122 | } |
d4a8288f MH |
123 | havetmp = 0; |
124 | if (all && rfile >= 0) { | |
5a6c967e CH |
125 | if (rfile >= 0) |
126 | close(rfile); | |
d4a8288f | 127 | unlink(rfname); |
d4a8288f MH |
128 | rfile = -1; |
129 | } | |
130 | } | |
131 | ||
132 | getline(tl) | |
133 | line tl; | |
134 | { | |
135 | register char *bp, *lp; | |
136 | register int nl; | |
137 | ||
138 | lp = linebuf; | |
139 | bp = getblock(tl, READ); | |
140 | nl = nleft; | |
141 | tl &= ~OFFMSK; | |
142 | while (*lp++ = *bp++) | |
143 | if (--nl == 0) { | |
144 | bp = getblock(tl += INCRMT, READ); | |
145 | nl = nleft; | |
146 | } | |
147 | } | |
148 | ||
149 | putline() | |
150 | { | |
151 | register char *bp, *lp; | |
152 | register int nl; | |
153 | line tl; | |
154 | ||
155 | dirtcnt++; | |
156 | lp = linebuf; | |
157 | change(); | |
158 | tl = tline; | |
159 | bp = getblock(tl, WRITE); | |
160 | nl = nleft; | |
161 | tl &= ~OFFMSK; | |
162 | while (*bp = *lp++) { | |
163 | if (*bp++ == '\n') { | |
164 | *--bp = 0; | |
165 | linebp = lp; | |
166 | break; | |
167 | } | |
168 | if (--nl == 0) { | |
169 | bp = getblock(tl += INCRMT, WRITE); | |
170 | nl = nleft; | |
171 | } | |
172 | } | |
173 | tl = tline; | |
174 | tline += (((lp - linebuf) + BNDRY - 1) >> SHFT) & 077776; | |
175 | return (tl); | |
176 | } | |
177 | ||
178 | int read(); | |
179 | int write(); | |
180 | ||
181 | char * | |
182 | getblock(atl, iof) | |
183 | line atl; | |
184 | int iof; | |
185 | { | |
186 | register int bno, off; | |
187 | ||
188 | bno = (atl >> OFFBTS) & BLKMSK; | |
189 | off = (atl << SHFT) & LBTMSK; | |
190 | if (bno >= NMBLKS) | |
191 | error(" Tmp file too large"); | |
192 | nleft = BUFSIZ - off; | |
193 | if (bno == iblock) { | |
194 | ichanged |= iof; | |
195 | hitin2 = 0; | |
196 | return (ibuff + off); | |
197 | } | |
198 | if (bno == iblock2) { | |
199 | ichang2 |= iof; | |
200 | hitin2 = 1; | |
201 | return (ibuff2 + off); | |
202 | } | |
203 | if (bno == oblock) | |
204 | return (obuff + off); | |
205 | if (iof == READ) { | |
206 | if (hitin2 == 0) { | |
d266c416 | 207 | if (ichang2) { |
d4a8288f | 208 | blkio(iblock2, ibuff2, write); |
d266c416 | 209 | } |
d4a8288f MH |
210 | ichang2 = 0; |
211 | iblock2 = bno; | |
212 | blkio(bno, ibuff2, read); | |
213 | hitin2 = 1; | |
214 | return (ibuff2 + off); | |
215 | } | |
216 | hitin2 = 0; | |
d266c416 | 217 | if (ichanged) { |
d4a8288f | 218 | blkio(iblock, ibuff, write); |
d266c416 | 219 | } |
d4a8288f MH |
220 | ichanged = 0; |
221 | iblock = bno; | |
222 | blkio(bno, ibuff, read); | |
223 | return (ibuff + off); | |
224 | } | |
d266c416 | 225 | if (oblock >= 0) { |
d266c416 MH |
226 | blkio(oblock, obuff, write); |
227 | } | |
d4a8288f MH |
228 | oblock = bno; |
229 | return (obuff + off); | |
230 | } | |
231 | ||
7c4625ef | 232 | #ifdef VMUNIX |
5a6c967e CH |
233 | #ifdef vms |
234 | #define INCORB 32 | |
235 | #else | |
7c4625ef | 236 | #define INCORB 64 |
5a6c967e | 237 | #endif |
7c4625ef MH |
238 | char incorb[INCORB+1][BUFSIZ]; |
239 | #define pagrnd(a) ((char *)(((int)a)&~(BUFSIZ-1))) | |
240 | int stilinc; /* up to here not written yet */ | |
241 | #endif | |
242 | ||
d4a8288f MH |
243 | blkio(b, buf, iofcn) |
244 | short b; | |
245 | char *buf; | |
246 | int (*iofcn)(); | |
247 | { | |
248 | ||
7c4625ef MH |
249 | #ifdef VMUNIX |
250 | if (b < INCORB) { | |
251 | if (iofcn == read) { | |
252 | bcopy(pagrnd(incorb[b+1]), buf, BUFSIZ); | |
253 | return; | |
254 | } | |
255 | bcopy(buf, pagrnd(incorb[b+1]), BUFSIZ); | |
256 | if (laste) { | |
257 | if (b >= stilinc) | |
258 | stilinc = b + 1; | |
259 | return; | |
260 | } | |
261 | } else if (stilinc) | |
262 | tflush(); | |
263 | #endif | |
d4a8288f MH |
264 | lseek(tfile, (long) (unsigned) b * BUFSIZ, 0); |
265 | if ((*iofcn)(tfile, buf, BUFSIZ) != BUFSIZ) | |
266 | filioerr(tfname); | |
267 | } | |
268 | ||
7c4625ef MH |
269 | #ifdef VMUNIX |
270 | tlaste() | |
271 | { | |
272 | ||
273 | if (stilinc) | |
274 | dirtcnt = 0; | |
275 | } | |
276 | ||
277 | tflush() | |
278 | { | |
279 | int i = stilinc; | |
280 | ||
281 | stilinc = 0; | |
282 | lseek(tfile, (long) 0, 0); | |
283 | if (write(tfile, pagrnd(incorb[1]), i * BUFSIZ) != (i * BUFSIZ)) | |
284 | filioerr(tfname); | |
285 | } | |
286 | #endif | |
287 | ||
d4a8288f MH |
288 | /* |
289 | * Synchronize the state of the temporary file in case | |
290 | * a crash occurs. | |
291 | */ | |
292 | synctmp() | |
293 | { | |
294 | register int cnt; | |
295 | register line *a; | |
296 | register short *bp; | |
297 | ||
7c4625ef MH |
298 | #ifdef VMUNIX |
299 | if (stilinc) | |
300 | return; | |
301 | #endif | |
d4a8288f MH |
302 | if (dol == zero) |
303 | return; | |
304 | if (ichanged) | |
305 | blkio(iblock, ibuff, write); | |
306 | ichanged = 0; | |
307 | if (ichang2) | |
308 | blkio(iblock2, ibuff2, write); | |
309 | ichang2 = 0; | |
310 | if (oblock != -1) | |
311 | blkio(oblock, obuff, write); | |
312 | time(&H.Time); | |
313 | uid = getuid(); | |
314 | *zero = (line) H.Time; | |
315 | for (a = zero, bp = blocks; a <= dol; a += BUFSIZ / sizeof *a, bp++) { | |
316 | if (*bp < 0) { | |
317 | tline = (tline + OFFMSK) &~ OFFMSK; | |
318 | *bp = ((tline >> OFFBTS) & BLKMSK); | |
d266c416 MH |
319 | if (*bp > NMBLKS) |
320 | error(" Tmp file too large"); | |
d4a8288f MH |
321 | tline += INCRMT; |
322 | oblock = *bp + 1; | |
323 | bp[1] = -1; | |
324 | } | |
325 | lseek(tfile, (long) (unsigned) *bp * BUFSIZ, 0); | |
326 | cnt = ((dol - a) + 2) * sizeof (line); | |
327 | if (cnt > BUFSIZ) | |
328 | cnt = BUFSIZ; | |
329 | if (write(tfile, (char *) a, cnt) != cnt) { | |
330 | oops: | |
331 | *zero = 0; | |
332 | filioerr(tfname); | |
333 | } | |
334 | *zero = 0; | |
335 | } | |
336 | flines = lineDOL(); | |
337 | lseek(tfile, 0l, 0); | |
338 | if (write(tfile, (char *) &H, sizeof H) != sizeof H) | |
339 | goto oops; | |
a7a51e4a SL |
340 | #ifdef notdef |
341 | /* | |
342 | * This will insure that exrecover gets as much | |
343 | * back after a crash as is absolutely possible, | |
344 | * but can result in pregnant pauses between commands | |
345 | * when the TSYNC call is made, so... | |
346 | */ | |
5a6c967e | 347 | #ifndef vms |
a7a51e4a SL |
348 | (void) fsync(tfile); |
349 | #endif | |
5a6c967e | 350 | #endif |
d4a8288f MH |
351 | } |
352 | ||
353 | TSYNC() | |
354 | { | |
355 | ||
299f2784 | 356 | if (dirtcnt > MAXDIRT) { /* mjm: 12 --> MAXDIRT */ |
7c4625ef MH |
357 | #ifdef VMUNIX |
358 | if (stilinc) | |
359 | tflush(); | |
360 | #endif | |
d4a8288f MH |
361 | dirtcnt = 0; |
362 | synctmp(); | |
363 | } | |
364 | } | |
365 | ||
366 | /* | |
367 | * Named buffer routines. | |
368 | * These are implemented differently than the main buffer. | |
369 | * Each named buffer has a chain of blocks in the register file. | |
370 | * Each block contains roughly 508 chars of text, | |
371 | * and a previous and next block number. We also have information | |
372 | * about which blocks came from deletes of multiple partial lines, | |
373 | * e.g. deleting a sentence or a LISP object. | |
374 | * | |
375 | * We maintain a free map for the temp file. To free the blocks | |
376 | * in a register we must read the blocks to find how they are chained | |
377 | * together. | |
378 | * | |
379 | * BUG: The default savind of deleted lines in numbered | |
380 | * buffers may be rather inefficient; it hasn't been profiled. | |
381 | */ | |
382 | struct strreg { | |
383 | short rg_flags; | |
384 | short rg_nleft; | |
385 | short rg_first; | |
386 | short rg_last; | |
387 | } strregs[('z'-'a'+1) + ('9'-'0'+1)], *strp; | |
388 | ||
389 | struct rbuf { | |
390 | short rb_prev; | |
391 | short rb_next; | |
392 | char rb_text[BUFSIZ - 2 * sizeof (short)]; | |
3c7b865a | 393 | } *rbuf, KILLrbuf, putrbuf, YANKrbuf, regrbuf; |
887e3e0d MH |
394 | #ifdef VMUNIX |
395 | short rused[256]; | |
396 | #else | |
d4a8288f | 397 | short rused[32]; |
887e3e0d | 398 | #endif |
d4a8288f MH |
399 | short rnleft; |
400 | short rblock; | |
401 | short rnext; | |
402 | char *rbufcp; | |
403 | ||
404 | regio(b, iofcn) | |
405 | short b; | |
406 | int (*iofcn)(); | |
407 | { | |
408 | ||
409 | if (rfile == -1) { | |
410 | CP(rfname, tfname); | |
5a6c967e | 411 | *(strend(rfname) - EPOSITION) = 'R'; |
d4a8288f MH |
412 | rfile = creat(rfname, 0600); |
413 | if (rfile < 0) | |
414 | oops: | |
415 | filioerr(rfname); | |
5a6c967e CH |
416 | else |
417 | close(rfile); | |
d4a8288f MH |
418 | rfile = open(rfname, 2); |
419 | if (rfile < 0) | |
420 | goto oops; | |
421 | } | |
422 | lseek(rfile, (long) b * BUFSIZ, 0); | |
423 | if ((*iofcn)(rfile, rbuf, BUFSIZ) != BUFSIZ) | |
424 | goto oops; | |
425 | rblock = b; | |
426 | } | |
427 | ||
428 | REGblk() | |
429 | { | |
430 | register int i, j, m; | |
431 | ||
432 | for (i = 0; i < sizeof rused / sizeof rused[0]; i++) { | |
433 | m = (rused[i] ^ 0177777) & 0177777; | |
434 | if (i == 0) | |
435 | m &= ~1; | |
436 | if (m != 0) { | |
437 | j = 0; | |
438 | while ((m & 1) == 0) | |
439 | j++, m >>= 1; | |
440 | rused[i] |= (1 << j); | |
441 | #ifdef RDEBUG | |
5a6c967e | 442 | ex_printf("allocating block %d\n", i * 16 + j); |
d4a8288f MH |
443 | #endif |
444 | return (i * 16 + j); | |
445 | } | |
446 | } | |
447 | error("Out of register space (ugh)"); | |
448 | /*NOTREACHED*/ | |
449 | } | |
450 | ||
451 | struct strreg * | |
452 | mapreg(c) | |
453 | register int c; | |
454 | { | |
455 | ||
456 | if (isupper(c)) | |
457 | c = tolower(c); | |
458 | return (isdigit(c) ? &strregs[('z'-'a'+1)+(c-'0')] : &strregs[c-'a']); | |
459 | } | |
460 | ||
461 | int shread(); | |
462 | ||
463 | KILLreg(c) | |
464 | register int c; | |
465 | { | |
d4a8288f MH |
466 | register struct strreg *sp; |
467 | ||
3c7b865a | 468 | rbuf = &KILLrbuf; |
d4a8288f MH |
469 | sp = mapreg(c); |
470 | rblock = sp->rg_first; | |
471 | sp->rg_first = sp->rg_last = 0; | |
472 | sp->rg_flags = sp->rg_nleft = 0; | |
473 | while (rblock != 0) { | |
474 | #ifdef RDEBUG | |
5a6c967e | 475 | ex_printf("freeing block %d\n", rblock); |
d4a8288f MH |
476 | #endif |
477 | rused[rblock / 16] &= ~(1 << (rblock % 16)); | |
478 | regio(rblock, shread); | |
479 | rblock = rbuf->rb_next; | |
480 | } | |
481 | } | |
482 | ||
483 | /*VARARGS*/ | |
484 | shread() | |
485 | { | |
486 | struct front { short a; short b; }; | |
487 | ||
488 | if (read(rfile, (char *) rbuf, sizeof (struct front)) == sizeof (struct front)) | |
489 | return (sizeof (struct rbuf)); | |
490 | return (0); | |
491 | } | |
492 | ||
493 | int getREG(); | |
494 | ||
495 | putreg(c) | |
496 | char c; | |
497 | { | |
d4a8288f MH |
498 | register line *odot = dot; |
499 | register line *odol = dol; | |
500 | register int cnt; | |
501 | ||
502 | deletenone(); | |
503 | appendnone(); | |
3c7b865a | 504 | rbuf = &putrbuf; |
d4a8288f MH |
505 | rnleft = 0; |
506 | rblock = 0; | |
507 | rnext = mapreg(c)->rg_first; | |
508 | if (rnext == 0) { | |
509 | if (inopen) { | |
510 | splitw++; | |
511 | vclean(); | |
512 | vgoto(WECHO, 0); | |
513 | } | |
514 | vreg = -1; | |
515 | error("Nothing in register %c", c); | |
516 | } | |
517 | if (inopen && partreg(c)) { | |
887e3e0d MH |
518 | if (!FIXUNDO) { |
519 | splitw++; vclean(); vgoto(WECHO, 0); vreg = -1; | |
520 | error("Can't put partial line inside macro"); | |
521 | } | |
d4a8288f MH |
522 | squish(); |
523 | addr1 = addr2 = dol; | |
524 | } | |
887e3e0d | 525 | cnt = append(getREG, addr2); |
d4a8288f MH |
526 | if (inopen && partreg(c)) { |
527 | unddol = dol; | |
528 | dol = odol; | |
529 | dot = odot; | |
530 | pragged(0); | |
531 | } | |
d4a8288f MH |
532 | killcnt(cnt); |
533 | notecnt = cnt; | |
534 | } | |
535 | ||
536 | partreg(c) | |
537 | char c; | |
538 | { | |
539 | ||
540 | return (mapreg(c)->rg_flags); | |
541 | } | |
542 | ||
543 | notpart(c) | |
544 | register int c; | |
545 | { | |
546 | ||
547 | if (c) | |
548 | mapreg(c)->rg_flags = 0; | |
549 | } | |
550 | ||
551 | getREG() | |
552 | { | |
553 | register char *lp = linebuf; | |
554 | register int c; | |
555 | ||
556 | for (;;) { | |
557 | if (rnleft == 0) { | |
558 | if (rnext == 0) | |
559 | return (EOF); | |
560 | regio(rnext, read); | |
561 | rnext = rbuf->rb_next; | |
562 | rbufcp = rbuf->rb_text; | |
563 | rnleft = sizeof rbuf->rb_text; | |
564 | } | |
565 | c = *rbufcp; | |
566 | if (c == 0) | |
567 | return (EOF); | |
568 | rbufcp++, --rnleft; | |
569 | if (c == '\n') { | |
570 | *lp++ = 0; | |
571 | return (0); | |
572 | } | |
573 | *lp++ = c; | |
574 | } | |
575 | } | |
576 | ||
577 | YANKreg(c) | |
578 | register int c; | |
579 | { | |
d4a8288f MH |
580 | register line *addr; |
581 | register struct strreg *sp; | |
f0f2d980 | 582 | char savelb[LBSIZE]; |
d4a8288f MH |
583 | |
584 | if (isdigit(c)) | |
585 | kshift(); | |
586 | if (islower(c)) | |
587 | KILLreg(c); | |
588 | strp = sp = mapreg(c); | |
589 | sp->rg_flags = inopen && cursor && wcursor; | |
3c7b865a | 590 | rbuf = &YANKrbuf; |
d4a8288f MH |
591 | if (sp->rg_last) { |
592 | regio(sp->rg_last, read); | |
593 | rnleft = sp->rg_nleft; | |
594 | rbufcp = &rbuf->rb_text[sizeof rbuf->rb_text - rnleft]; | |
595 | } else { | |
596 | rblock = 0; | |
597 | rnleft = 0; | |
598 | } | |
f0f2d980 | 599 | CP(savelb,linebuf); |
d4a8288f MH |
600 | for (addr = addr1; addr <= addr2; addr++) { |
601 | getline(*addr); | |
602 | if (sp->rg_flags) { | |
603 | if (addr == addr2) | |
604 | *wcursor = 0; | |
605 | if (addr == addr1) | |
606 | strcpy(linebuf, cursor); | |
607 | } | |
608 | YANKline(); | |
609 | } | |
610 | rbflush(); | |
611 | killed(); | |
f0f2d980 | 612 | CP(linebuf,savelb); |
d4a8288f MH |
613 | } |
614 | ||
615 | kshift() | |
616 | { | |
617 | register int i; | |
618 | ||
619 | KILLreg('9'); | |
620 | for (i = '8'; i >= '0'; i--) | |
621 | copy(mapreg(i+1), mapreg(i), sizeof (struct strreg)); | |
622 | } | |
623 | ||
624 | YANKline() | |
625 | { | |
626 | register char *lp = linebuf; | |
627 | register struct rbuf *rp = rbuf; | |
628 | register int c; | |
629 | ||
630 | do { | |
631 | c = *lp++; | |
632 | if (c == 0) | |
633 | c = '\n'; | |
634 | if (rnleft == 0) { | |
635 | rp->rb_next = REGblk(); | |
636 | rbflush(); | |
637 | rblock = rp->rb_next; | |
638 | rp->rb_next = 0; | |
639 | rp->rb_prev = rblock; | |
640 | rnleft = sizeof rp->rb_text; | |
641 | rbufcp = rp->rb_text; | |
642 | } | |
643 | *rbufcp++ = c; | |
644 | --rnleft; | |
645 | } while (c != '\n'); | |
646 | if (rnleft) | |
647 | *rbufcp = 0; | |
648 | } | |
649 | ||
650 | rbflush() | |
651 | { | |
652 | register struct strreg *sp = strp; | |
653 | ||
654 | if (rblock == 0) | |
655 | return; | |
656 | regio(rblock, write); | |
657 | if (sp->rg_first == 0) | |
658 | sp->rg_first = rblock; | |
659 | sp->rg_last = rblock; | |
660 | sp->rg_nleft = rnleft; | |
661 | } | |
662 | ||
663 | /* Register c to char buffer buf of size buflen */ | |
664 | regbuf(c, buf, buflen) | |
665 | char c; | |
666 | char *buf; | |
667 | int buflen; | |
668 | { | |
d4a8288f MH |
669 | register char *p, *lp; |
670 | ||
3c7b865a | 671 | rbuf = ®rbuf; |
d4a8288f MH |
672 | rnleft = 0; |
673 | rblock = 0; | |
674 | rnext = mapreg(c)->rg_first; | |
675 | if (rnext==0) { | |
676 | *buf = 0; | |
677 | error("Nothing in register %c",c); | |
678 | } | |
679 | p = buf; | |
680 | while (getREG()==0) { | |
681 | for (lp=linebuf; *lp;) { | |
682 | if (p >= &buf[buflen]) | |
683 | error("Register too long@to fit in memory"); | |
684 | *p++ = *lp++; | |
685 | } | |
686 | *p++ = '\n'; | |
687 | } | |
688 | if (partreg(c)) p--; | |
689 | *p = '\0'; | |
690 | getDOT(); | |
691 | } | |
d266c416 MH |
692 | |
693 | /* | |
694 | * Encryption routines. These are essentially unmodified from ed. | |
695 | */ | |
696 |