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acc029e0 | 1 | /*- |
ff1c769a KB |
2 | * Copyright (c) 1991 |
3 | * The Regents of the University of California. All rights reserved. | |
acc029e0 KB |
4 | * |
5 | * %sccs.include.proprietary.c% | |
6 | */ | |
7 | ||
8 | #ifndef lint | |
9 | char copyright[] = | |
ff1c769a KB |
10 | "@(#) Copyright (c) 1991\n\ |
11 | The Regents of the University of California. All rights reserved.\n"; | |
acc029e0 KB |
12 | #endif /* not lint */ |
13 | ||
205a2d85 | 14 | #ifndef lint |
7fccad59 | 15 | static char sccsid[] = "@(#)ed.c 5.2 (Berkeley) %G%"; |
acc029e0 | 16 | #endif /* not lint */ |
31e58db8 KM |
17 | |
18 | /* | |
19 | * Editor | |
20 | */ | |
f103e0a6 | 21 | #include <sys/param.h> |
2f339969 KB |
22 | #include <sys/wait.h> |
23 | #include <signal.h> | |
31e58db8 | 24 | #include <sgtty.h> |
2dd1db50 | 25 | #undef CEOF |
2f339969 KB |
26 | #include <fcntl.h> |
27 | #include <time.h> | |
31e58db8 | 28 | #include <setjmp.h> |
2f339969 KB |
29 | #include <stdlib.h> |
30 | #include <string.h> | |
31 | #include <unistd.h> | |
dc891cfc KB |
32 | #include "pathnames.h" |
33 | ||
31e58db8 | 34 | #define NULL 0 |
31e58db8 KM |
35 | #define LBSIZE 512 |
36 | #define ESIZE 128 | |
37 | #define GBSIZE 256 | |
38 | #define NBRA 5 | |
39 | #define EOF -1 | |
31e58db8 KM |
40 | |
41 | #define CBRA 1 | |
42 | #define CCHR 2 | |
43 | #define CDOT 4 | |
44 | #define CCL 6 | |
45 | #define NCCL 8 | |
46 | #define CDOL 10 | |
47 | #define CEOF 11 | |
48 | #define CKET 12 | |
49 | #define CBACK 14 | |
50 | ||
51 | #define STAR 01 | |
52 | ||
53 | char Q[] = ""; | |
54 | char T[] = "TMP"; | |
55 | #define READ 0 | |
56 | #define WRITE 1 | |
57 | ||
58 | int peekc; | |
59 | int lastc; | |
4c98207c KB |
60 | char savedfile[MAXPATHLEN]; |
61 | char file[MAXPATHLEN]; | |
31e58db8 KM |
62 | char linebuf[LBSIZE]; |
63 | char rhsbuf[LBSIZE/2]; | |
64 | char expbuf[ESIZE+4]; | |
65 | int circfl; | |
66 | int *zero; | |
67 | int *dot; | |
68 | int *dol; | |
69 | int *addr1; | |
70 | int *addr2; | |
71 | char genbuf[LBSIZE]; | |
72 | long count; | |
73 | char *nextip; | |
74 | char *linebp; | |
75 | int ninbuf; | |
76 | int io; | |
77 | int pflag; | |
0deb4896 KB |
78 | sig_t oldhup; |
79 | sig_t oldquit; | |
31e58db8 | 80 | int vflag = 1; |
62793f1c | 81 | |
62793f1c | 82 | |
31e58db8 KM |
83 | int listf; |
84 | int col; | |
85 | char *globp; | |
86 | int tfile = -1; | |
87 | int tline; | |
54e0d068 | 88 | char tfname[sizeof(_PATH_TMP) + 20]; |
31e58db8 KM |
89 | char *loc1; |
90 | char *loc2; | |
91 | char *locs; | |
92 | char ibuff[512]; | |
93 | int iblock = -1; | |
94 | char obuff[512]; | |
95 | int oblock = -1; | |
96 | int ichanged; | |
97 | int nleft; | |
98 | char WRERR[] = "WRITE ERROR"; | |
99 | int names[26]; | |
100 | int anymarks; | |
101 | char *braslist[NBRA]; | |
102 | char *braelist[NBRA]; | |
103 | int nbra; | |
104 | int subnewa; | |
105 | int subolda; | |
106 | int fchange; | |
107 | int wrapp; | |
108 | unsigned nlall = 128; | |
109 | ||
110 | int *address(); | |
111 | char *getline(); | |
112 | char *getblock(); | |
113 | char *place(); | |
31e58db8 KM |
114 | jmp_buf savej; |
115 | ||
2f339969 KB |
116 | void onintr(), quit(), onhup(); |
117 | ||
31e58db8 | 118 | main(argc, argv) |
2f339969 KB |
119 | int argc; |
120 | char **argv; | |
31e58db8 KM |
121 | { |
122 | register char *p1, *p2; | |
0deb4896 | 123 | sig_t oldintr; |
31e58db8 KM |
124 | |
125 | oldquit = signal(SIGQUIT, SIG_IGN); | |
126 | oldhup = signal(SIGHUP, SIG_IGN); | |
127 | oldintr = signal(SIGINT, SIG_IGN); | |
128 | if ((int)signal(SIGTERM, SIG_IGN) == 0) | |
129 | signal(SIGTERM, quit); | |
130 | argv++; | |
131 | while (argc > 1 && **argv=='-') { | |
132 | switch((*argv)[1]) { | |
133 | ||
134 | case '\0': | |
135 | vflag = 0; | |
136 | break; | |
137 | ||
138 | case 'q': | |
139 | signal(SIGQUIT, SIG_DFL); | |
140 | vflag = 1; | |
141 | break; | |
142 | ||
31e58db8 KM |
143 | } |
144 | argv++; | |
145 | argc--; | |
146 | } | |
31e58db8 KM |
147 | |
148 | if (argc>1) { | |
149 | p1 = *argv; | |
150 | p2 = savedfile; | |
151 | while (*p2++ = *p1++) | |
152 | ; | |
153 | globp = "r"; | |
154 | } | |
155 | zero = (int *)malloc(nlall*sizeof(int)); | |
54e0d068 KB |
156 | (void)strcpy(tfname, _PATH_TMP); |
157 | (void)strcat(tfname, "_edXXXXXX"); | |
158 | (void)mktemp(tfname); | |
31e58db8 KM |
159 | init(); |
160 | if (((int)oldintr&01) == 0) | |
161 | signal(SIGINT, onintr); | |
162 | if (((int)oldhup&01) == 0) | |
163 | signal(SIGHUP, onhup); | |
164 | setjmp(savej); | |
165 | commands(); | |
166 | quit(); | |
167 | } | |
168 | ||
169 | commands() | |
170 | { | |
171 | int getfile(), gettty(); | |
172 | register *a1, c; | |
173 | ||
174 | for (;;) { | |
175 | if (pflag) { | |
176 | pflag = 0; | |
177 | addr1 = addr2 = dot; | |
178 | goto print; | |
179 | } | |
180 | addr1 = 0; | |
181 | addr2 = 0; | |
182 | do { | |
183 | addr1 = addr2; | |
184 | if ((a1 = address())==0) { | |
185 | c = getchr(); | |
186 | break; | |
187 | } | |
188 | addr2 = a1; | |
189 | if ((c=getchr()) == ';') { | |
190 | c = ','; | |
191 | dot = a1; | |
192 | } | |
193 | } while (c==','); | |
194 | if (addr1==0) | |
195 | addr1 = addr2; | |
196 | switch(c) { | |
197 | ||
198 | case 'a': | |
199 | setdot(); | |
200 | newline(); | |
201 | append(gettty, addr2); | |
202 | continue; | |
203 | ||
204 | case 'c': | |
205 | delete(); | |
206 | append(gettty, addr1-1); | |
207 | continue; | |
208 | ||
209 | case 'd': | |
210 | delete(); | |
211 | continue; | |
212 | ||
213 | case 'E': | |
214 | fchange = 0; | |
215 | c = 'e'; | |
216 | case 'e': | |
217 | setnoaddr(); | |
218 | if (vflag && fchange) { | |
219 | fchange = 0; | |
220 | error(Q); | |
221 | } | |
222 | filename(c); | |
223 | init(); | |
224 | addr2 = zero; | |
225 | goto caseread; | |
226 | ||
227 | case 'f': | |
228 | setnoaddr(); | |
229 | filename(c); | |
230 | puts(savedfile); | |
231 | continue; | |
232 | ||
233 | case 'g': | |
234 | global(1); | |
235 | continue; | |
236 | ||
237 | case 'i': | |
238 | setdot(); | |
239 | nonzero(); | |
240 | newline(); | |
241 | append(gettty, addr2-1); | |
242 | continue; | |
243 | ||
244 | ||
245 | case 'j': | |
246 | if (addr2==0) { | |
247 | addr1 = dot; | |
248 | addr2 = dot+1; | |
249 | } | |
250 | setdot(); | |
251 | newline(); | |
252 | nonzero(); | |
253 | join(); | |
254 | continue; | |
255 | ||
256 | case 'k': | |
257 | if ((c = getchr()) < 'a' || c > 'z') | |
258 | error(Q); | |
259 | newline(); | |
260 | setdot(); | |
261 | nonzero(); | |
262 | names[c-'a'] = *addr2 & ~01; | |
263 | anymarks |= 01; | |
264 | continue; | |
265 | ||
266 | case 'm': | |
267 | move(0); | |
268 | continue; | |
269 | ||
270 | case '\n': | |
271 | if (addr2==0) | |
272 | addr2 = dot+1; | |
273 | addr1 = addr2; | |
274 | goto print; | |
275 | ||
276 | case 'l': | |
277 | listf++; | |
278 | case 'p': | |
279 | case 'P': | |
280 | newline(); | |
281 | print: | |
282 | setdot(); | |
283 | nonzero(); | |
284 | a1 = addr1; | |
285 | do { | |
286 | puts(getline(*a1++)); | |
287 | } while (a1 <= addr2); | |
288 | dot = addr2; | |
289 | listf = 0; | |
290 | continue; | |
291 | ||
292 | case 'Q': | |
293 | fchange = 0; | |
294 | case 'q': | |
295 | setnoaddr(); | |
296 | newline(); | |
297 | quit(); | |
298 | ||
299 | case 'r': | |
300 | filename(c); | |
301 | caseread: | |
302 | if ((io = open(file, 0)) < 0) { | |
303 | lastc = '\n'; | |
304 | error(file); | |
305 | } | |
306 | setall(); | |
307 | ninbuf = 0; | |
308 | c = zero != dol; | |
309 | append(getfile, addr2); | |
310 | exfile(); | |
311 | fchange = c; | |
312 | continue; | |
313 | ||
314 | case 's': | |
315 | setdot(); | |
316 | nonzero(); | |
317 | substitute(globp!=0); | |
318 | continue; | |
319 | ||
320 | case 't': | |
321 | move(1); | |
322 | continue; | |
323 | ||
324 | case 'u': | |
325 | setdot(); | |
326 | nonzero(); | |
327 | newline(); | |
328 | if ((*addr2&~01) != subnewa) | |
329 | error(Q); | |
330 | *addr2 = subolda; | |
331 | dot = addr2; | |
332 | continue; | |
333 | ||
334 | case 'v': | |
335 | global(0); | |
336 | continue; | |
337 | ||
338 | case 'W': | |
339 | wrapp++; | |
340 | case 'w': | |
341 | setall(); | |
342 | nonzero(); | |
343 | filename(c); | |
344 | if(!wrapp || | |
345 | ((io = open(file,1)) == -1) || | |
346 | ((lseek(io, 0L, 2)) == -1)) | |
347 | if ((io = creat(file, 0666)) < 0) | |
348 | error(file); | |
349 | wrapp = 0; | |
350 | putfile(); | |
351 | exfile(); | |
352 | if (addr1==zero+1 && addr2==dol) | |
353 | fchange = 0; | |
354 | continue; | |
355 | ||
31e58db8 KM |
356 | |
357 | ||
358 | case '=': | |
359 | setall(); | |
360 | newline(); | |
361 | count = (addr2-zero)&077777; | |
362 | putd(); | |
363 | putchr('\n'); | |
364 | continue; | |
365 | ||
366 | case '!': | |
367 | callunix(); | |
368 | continue; | |
369 | ||
370 | case EOF: | |
371 | return; | |
372 | ||
373 | } | |
374 | error(Q); | |
375 | } | |
376 | } | |
377 | ||
378 | int * | |
379 | address() | |
380 | { | |
381 | register *a1, minus, c; | |
382 | int n, relerr; | |
383 | ||
384 | minus = 0; | |
385 | a1 = 0; | |
386 | for (;;) { | |
387 | c = getchr(); | |
388 | if ('0'<=c && c<='9') { | |
389 | n = 0; | |
390 | do { | |
391 | n *= 10; | |
392 | n += c - '0'; | |
393 | } while ((c = getchr())>='0' && c<='9'); | |
394 | peekc = c; | |
395 | if (a1==0) | |
396 | a1 = zero; | |
397 | if (minus<0) | |
398 | n = -n; | |
399 | a1 += n; | |
400 | minus = 0; | |
401 | continue; | |
402 | } | |
403 | relerr = 0; | |
404 | if (a1 || minus) | |
405 | relerr++; | |
406 | switch(c) { | |
407 | case ' ': | |
408 | case '\t': | |
409 | continue; | |
410 | ||
411 | case '+': | |
412 | minus++; | |
413 | if (a1==0) | |
414 | a1 = dot; | |
415 | continue; | |
416 | ||
417 | case '-': | |
418 | case '^': | |
419 | minus--; | |
420 | if (a1==0) | |
421 | a1 = dot; | |
422 | continue; | |
423 | ||
424 | case '?': | |
425 | case '/': | |
426 | compile(c); | |
427 | a1 = dot; | |
428 | for (;;) { | |
429 | if (c=='/') { | |
430 | a1++; | |
431 | if (a1 > dol) | |
432 | a1 = zero; | |
433 | } else { | |
434 | a1--; | |
435 | if (a1 < zero) | |
436 | a1 = dol; | |
437 | } | |
438 | if (execute(0, a1)) | |
439 | break; | |
440 | if (a1==dot) | |
441 | error(Q); | |
442 | } | |
443 | break; | |
444 | ||
445 | case '$': | |
446 | a1 = dol; | |
447 | break; | |
448 | ||
449 | case '.': | |
450 | a1 = dot; | |
451 | break; | |
452 | ||
453 | case '\'': | |
454 | if ((c = getchr()) < 'a' || c > 'z') | |
455 | error(Q); | |
456 | for (a1=zero; a1<=dol; a1++) | |
457 | if (names[c-'a'] == (*a1 & ~01)) | |
458 | break; | |
459 | break; | |
460 | ||
461 | default: | |
462 | peekc = c; | |
463 | if (a1==0) | |
464 | return(0); | |
465 | a1 += minus; | |
466 | if (a1<zero || a1>dol) | |
467 | error(Q); | |
468 | return(a1); | |
469 | } | |
470 | if (relerr) | |
471 | error(Q); | |
472 | } | |
473 | } | |
474 | ||
475 | setdot() | |
476 | { | |
477 | if (addr2 == 0) | |
478 | addr1 = addr2 = dot; | |
479 | if (addr1 > addr2) | |
480 | error(Q); | |
481 | } | |
482 | ||
483 | setall() | |
484 | { | |
485 | if (addr2==0) { | |
486 | addr1 = zero+1; | |
487 | addr2 = dol; | |
488 | if (dol==zero) | |
489 | addr1 = zero; | |
490 | } | |
491 | setdot(); | |
492 | } | |
493 | ||
494 | setnoaddr() | |
495 | { | |
496 | if (addr2) | |
497 | error(Q); | |
498 | } | |
499 | ||
500 | nonzero() | |
501 | { | |
502 | if (addr1<=zero || addr2>dol) | |
503 | error(Q); | |
504 | } | |
505 | ||
506 | newline() | |
507 | { | |
508 | register c; | |
509 | ||
510 | if ((c = getchr()) == '\n') | |
511 | return; | |
512 | if (c=='p' || c=='l') { | |
513 | pflag++; | |
514 | if (c=='l') | |
515 | listf++; | |
516 | if (getchr() == '\n') | |
517 | return; | |
518 | } | |
519 | error(Q); | |
520 | } | |
521 | ||
522 | filename(comm) | |
523 | { | |
524 | register char *p1, *p2; | |
525 | register c; | |
526 | ||
527 | count = 0; | |
528 | c = getchr(); | |
529 | if (c=='\n' || c==EOF) { | |
530 | p1 = savedfile; | |
531 | if (*p1==0 && comm!='f') | |
532 | error(Q); | |
533 | p2 = file; | |
534 | while (*p2++ = *p1++) | |
535 | ; | |
536 | return; | |
537 | } | |
538 | if (c!=' ') | |
539 | error(Q); | |
540 | while ((c = getchr()) == ' ') | |
541 | ; | |
542 | if (c=='\n') | |
543 | error(Q); | |
544 | p1 = file; | |
545 | do { | |
546 | *p1++ = c; | |
547 | if (c==' ' || c==EOF) | |
548 | error(Q); | |
549 | } while ((c = getchr()) != '\n'); | |
550 | *p1++ = 0; | |
551 | if (savedfile[0]==0 || comm=='e' || comm=='f') { | |
552 | p1 = savedfile; | |
553 | p2 = file; | |
554 | while (*p1++ = *p2++) | |
555 | ; | |
556 | } | |
557 | } | |
558 | ||
559 | exfile() | |
560 | { | |
561 | close(io); | |
562 | io = -1; | |
563 | if (vflag) { | |
564 | putd(); | |
565 | putchr('\n'); | |
566 | } | |
567 | } | |
568 | ||
0deb4896 | 569 | void |
31e58db8 KM |
570 | onintr() |
571 | { | |
0deb4896 | 572 | /* not necessary: (void)signal(SIGINT, onintr); */ |
31e58db8 KM |
573 | putchr('\n'); |
574 | lastc = '\n'; | |
575 | error(Q); | |
576 | } | |
577 | ||
0deb4896 | 578 | void |
31e58db8 KM |
579 | onhup() |
580 | { | |
0deb4896 KB |
581 | /* not necessary: (void)signal(SIGINT, SIG_IGN); */ |
582 | /* not necessary: (void)signal(SIGHUP, SIG_IGN); */ | |
31e58db8 KM |
583 | if (dol > zero) { |
584 | addr1 = zero+1; | |
585 | addr2 = dol; | |
586 | io = creat("ed.hup", 0666); | |
587 | if (io > 0) | |
588 | putfile(); | |
589 | } | |
590 | fchange = 0; | |
591 | quit(); | |
592 | } | |
593 | ||
594 | error(s) | |
595 | char *s; | |
596 | { | |
597 | register c; | |
598 | ||
599 | wrapp = 0; | |
600 | listf = 0; | |
601 | putchr('?'); | |
602 | puts(s); | |
603 | count = 0; | |
604 | lseek(0, (long)0, 2); | |
605 | pflag = 0; | |
606 | if (globp) | |
607 | lastc = '\n'; | |
608 | globp = 0; | |
609 | peekc = lastc; | |
610 | if(lastc) | |
611 | while ((c = getchr()) != '\n' && c != EOF) | |
612 | ; | |
613 | if (io > 0) { | |
614 | close(io); | |
615 | io = -1; | |
616 | } | |
617 | longjmp(savej, 1); | |
618 | } | |
619 | ||
620 | getchr() | |
621 | { | |
622 | char c; | |
623 | if (lastc=peekc) { | |
624 | peekc = 0; | |
625 | return(lastc); | |
626 | } | |
627 | if (globp) { | |
628 | if ((lastc = *globp++) != 0) | |
629 | return(lastc); | |
630 | globp = 0; | |
631 | return(EOF); | |
632 | } | |
633 | if (read(0, &c, 1) <= 0) | |
634 | return(lastc = EOF); | |
635 | lastc = c&0177; | |
636 | return(lastc); | |
637 | } | |
638 | ||
639 | gettty() | |
640 | { | |
641 | register c; | |
642 | register char *gf; | |
643 | register char *p; | |
644 | ||
645 | p = linebuf; | |
646 | gf = globp; | |
647 | while ((c = getchr()) != '\n') { | |
648 | if (c==EOF) { | |
649 | if (gf) | |
650 | peekc = c; | |
651 | return(c); | |
652 | } | |
653 | if ((c &= 0177) == 0) | |
654 | continue; | |
655 | *p++ = c; | |
656 | if (p >= &linebuf[LBSIZE-2]) | |
657 | error(Q); | |
658 | } | |
659 | *p++ = 0; | |
660 | if (linebuf[0]=='.' && linebuf[1]==0) | |
661 | return(EOF); | |
662 | return(0); | |
663 | } | |
664 | ||
665 | getfile() | |
666 | { | |
667 | register c; | |
668 | register char *lp, *fp; | |
669 | ||
670 | lp = linebuf; | |
671 | fp = nextip; | |
672 | do { | |
673 | if (--ninbuf < 0) { | |
674 | if ((ninbuf = read(io, genbuf, LBSIZE)-1) < 0) | |
675 | return(EOF); | |
676 | fp = genbuf; | |
677 | while(fp < &genbuf[ninbuf]) { | |
678 | if (*fp++ & 0200) { | |
31e58db8 KM |
679 | break; |
680 | } | |
681 | } | |
682 | fp = genbuf; | |
683 | } | |
684 | c = *fp++; | |
685 | if (c=='\0') | |
686 | continue; | |
687 | if (c&0200 || lp >= &linebuf[LBSIZE]) { | |
688 | lastc = '\n'; | |
689 | error(Q); | |
690 | } | |
691 | *lp++ = c; | |
692 | count++; | |
693 | } while (c != '\n'); | |
694 | *--lp = 0; | |
695 | nextip = fp; | |
696 | return(0); | |
697 | } | |
698 | ||
699 | putfile() | |
700 | { | |
701 | int *a1, n; | |
702 | register char *fp, *lp; | |
703 | register nib; | |
704 | ||
705 | nib = 512; | |
706 | fp = genbuf; | |
707 | a1 = addr1; | |
708 | do { | |
709 | lp = getline(*a1++); | |
710 | for (;;) { | |
711 | if (--nib < 0) { | |
712 | n = fp-genbuf; | |
31e58db8 KM |
713 | if(write(io, genbuf, n) != n) { |
714 | puts(WRERR); | |
715 | error(Q); | |
716 | } | |
717 | nib = 511; | |
718 | fp = genbuf; | |
719 | } | |
720 | count++; | |
721 | if ((*fp++ = *lp++) == 0) { | |
722 | fp[-1] = '\n'; | |
723 | break; | |
724 | } | |
725 | } | |
726 | } while (a1 <= addr2); | |
727 | n = fp-genbuf; | |
31e58db8 KM |
728 | if(write(io, genbuf, n) != n) { |
729 | puts(WRERR); | |
730 | error(Q); | |
731 | } | |
732 | } | |
733 | ||
734 | append(f, a) | |
735 | int *a; | |
736 | int (*f)(); | |
737 | { | |
738 | register *a1, *a2, *rdot; | |
739 | int nline, tl; | |
740 | ||
741 | nline = 0; | |
742 | dot = a; | |
743 | while ((*f)() == 0) { | |
744 | if ((dol-zero)+1 >= nlall) { | |
745 | int *ozero = zero; | |
746 | nlall += 512; | |
31e58db8 KM |
747 | if ((zero = (int *)realloc((char *)zero, nlall*sizeof(int)))==NULL) { |
748 | lastc = '\n'; | |
749 | zero = ozero; | |
750 | error("MEM?"); | |
751 | } | |
752 | dot += zero - ozero; | |
753 | dol += zero - ozero; | |
754 | } | |
755 | tl = putline(); | |
756 | nline++; | |
757 | a1 = ++dol; | |
758 | a2 = a1+1; | |
759 | rdot = ++dot; | |
760 | while (a1 > rdot) | |
761 | *--a2 = *--a1; | |
762 | *rdot = tl; | |
763 | } | |
764 | return(nline); | |
765 | } | |
766 | ||
767 | callunix() | |
768 | { | |
0deb4896 KB |
769 | register sig_t savint; |
770 | register int pid, rpid; | |
31e58db8 KM |
771 | int retcode; |
772 | ||
773 | setnoaddr(); | |
774 | if ((pid = fork()) == 0) { | |
775 | signal(SIGHUP, oldhup); | |
776 | signal(SIGQUIT, oldquit); | |
dc891cfc | 777 | execl(_PATH_BSHELL, "sh", "-t", 0); |
31e58db8 KM |
778 | exit(0100); |
779 | } | |
780 | savint = signal(SIGINT, SIG_IGN); | |
781 | while ((rpid = wait(&retcode)) != pid && rpid != -1) | |
782 | ; | |
783 | signal(SIGINT, savint); | |
784 | puts("!"); | |
785 | } | |
786 | ||
0deb4896 | 787 | void |
31e58db8 KM |
788 | quit() |
789 | { | |
790 | if (vflag && fchange && dol!=zero) { | |
791 | fchange = 0; | |
792 | error(Q); | |
793 | } | |
794 | unlink(tfname); | |
795 | exit(0); | |
796 | } | |
797 | ||
798 | delete() | |
799 | { | |
800 | setdot(); | |
801 | newline(); | |
802 | nonzero(); | |
803 | rdelete(addr1, addr2); | |
804 | } | |
805 | ||
806 | rdelete(ad1, ad2) | |
807 | int *ad1, *ad2; | |
808 | { | |
809 | register *a1, *a2, *a3; | |
810 | ||
811 | a1 = ad1; | |
812 | a2 = ad2+1; | |
813 | a3 = dol; | |
814 | dol -= a2 - a1; | |
815 | do { | |
816 | *a1++ = *a2++; | |
817 | } while (a2 <= a3); | |
818 | a1 = ad1; | |
819 | if (a1 > dol) | |
820 | a1 = dol; | |
821 | dot = a1; | |
822 | fchange = 1; | |
823 | } | |
824 | ||
825 | gdelete() | |
826 | { | |
827 | register *a1, *a2, *a3; | |
828 | ||
829 | a3 = dol; | |
830 | for (a1=zero+1; (*a1&01)==0; a1++) | |
831 | if (a1>=a3) | |
832 | return; | |
833 | for (a2=a1+1; a2<=a3;) { | |
834 | if (*a2&01) { | |
835 | a2++; | |
836 | dot = a1; | |
837 | } else | |
838 | *a1++ = *a2++; | |
839 | } | |
840 | dol = a1-1; | |
841 | if (dot>dol) | |
842 | dot = dol; | |
843 | fchange = 1; | |
844 | } | |
845 | ||
846 | char * | |
847 | getline(tl) | |
848 | { | |
849 | register char *bp, *lp; | |
850 | register nl; | |
851 | ||
852 | lp = linebuf; | |
853 | bp = getblock(tl, READ); | |
854 | nl = nleft; | |
855 | tl &= ~0377; | |
856 | while (*lp++ = *bp++) | |
857 | if (--nl == 0) { | |
858 | bp = getblock(tl+=0400, READ); | |
859 | nl = nleft; | |
860 | } | |
861 | return(linebuf); | |
862 | } | |
863 | ||
864 | putline() | |
865 | { | |
866 | register char *bp, *lp; | |
867 | register nl; | |
868 | int tl; | |
869 | ||
870 | fchange = 1; | |
871 | lp = linebuf; | |
872 | tl = tline; | |
873 | bp = getblock(tl, WRITE); | |
874 | nl = nleft; | |
875 | tl &= ~0377; | |
876 | while (*bp = *lp++) { | |
877 | if (*bp++ == '\n') { | |
878 | *--bp = 0; | |
879 | linebp = lp; | |
880 | break; | |
881 | } | |
882 | if (--nl == 0) { | |
883 | bp = getblock(tl+=0400, WRITE); | |
884 | nl = nleft; | |
885 | } | |
886 | } | |
887 | nl = tline; | |
888 | tline += (((lp-linebuf)+03)>>1)&077776; | |
889 | return(nl); | |
890 | } | |
891 | ||
892 | char * | |
893 | getblock(atl, iof) | |
894 | { | |
895 | extern read(), write(); | |
896 | register bno, off; | |
897 | register char *p1, *p2; | |
898 | register int n; | |
899 | ||
900 | bno = (atl>>8)&0377; | |
901 | off = (atl<<1)&0774; | |
902 | if (bno >= 255) { | |
903 | lastc = '\n'; | |
904 | error(T); | |
905 | } | |
906 | nleft = 512 - off; | |
907 | if (bno==iblock) { | |
908 | ichanged |= iof; | |
909 | return(ibuff+off); | |
910 | } | |
911 | if (bno==oblock) | |
912 | return(obuff+off); | |
913 | if (iof==READ) { | |
914 | if (ichanged) { | |
31e58db8 KM |
915 | blkio(iblock, ibuff, write); |
916 | } | |
917 | ichanged = 0; | |
918 | iblock = bno; | |
919 | blkio(bno, ibuff, read); | |
31e58db8 KM |
920 | return(ibuff+off); |
921 | } | |
922 | if (oblock>=0) { | |
31e58db8 KM |
923 | blkio(oblock, obuff, write); |
924 | } | |
925 | oblock = bno; | |
926 | return(obuff+off); | |
927 | } | |
928 | ||
929 | blkio(b, buf, iofcn) | |
930 | char *buf; | |
931 | int (*iofcn)(); | |
932 | { | |
933 | lseek(tfile, (long)b<<9, 0); | |
934 | if ((*iofcn)(tfile, buf, 512) != 512) { | |
935 | error(T); | |
936 | } | |
937 | } | |
938 | ||
939 | init() | |
940 | { | |
941 | register *markp; | |
942 | ||
943 | close(tfile); | |
944 | tline = 2; | |
945 | for (markp = names; markp < &names[26]; ) | |
946 | *markp++ = 0; | |
947 | subnewa = 0; | |
948 | anymarks = 0; | |
949 | iblock = -1; | |
950 | oblock = -1; | |
951 | ichanged = 0; | |
952 | close(creat(tfname, 0600)); | |
953 | tfile = open(tfname, 2); | |
31e58db8 KM |
954 | dot = dol = zero; |
955 | } | |
956 | ||
957 | global(k) | |
958 | { | |
959 | register char *gp; | |
960 | register c; | |
961 | register int *a1; | |
962 | char globuf[GBSIZE]; | |
963 | ||
964 | if (globp) | |
965 | error(Q); | |
966 | setall(); | |
967 | nonzero(); | |
968 | if ((c=getchr())=='\n') | |
969 | error(Q); | |
970 | compile(c); | |
971 | gp = globuf; | |
972 | while ((c = getchr()) != '\n') { | |
973 | if (c==EOF) | |
974 | error(Q); | |
975 | if (c=='\\') { | |
976 | c = getchr(); | |
977 | if (c!='\n') | |
978 | *gp++ = '\\'; | |
979 | } | |
980 | *gp++ = c; | |
981 | if (gp >= &globuf[GBSIZE-2]) | |
982 | error(Q); | |
983 | } | |
984 | *gp++ = '\n'; | |
985 | *gp++ = 0; | |
986 | for (a1=zero; a1<=dol; a1++) { | |
987 | *a1 &= ~01; | |
988 | if (a1>=addr1 && a1<=addr2 && execute(0, a1)==k) | |
989 | *a1 |= 01; | |
990 | } | |
991 | /* | |
992 | * Special case: g/.../d (avoid n^2 algorithm) | |
993 | */ | |
994 | if (globuf[0]=='d' && globuf[1]=='\n' && globuf[2]=='\0') { | |
995 | gdelete(); | |
996 | return; | |
997 | } | |
998 | for (a1=zero; a1<=dol; a1++) { | |
999 | if (*a1 & 01) { | |
1000 | *a1 &= ~01; | |
1001 | dot = a1; | |
1002 | globp = globuf; | |
1003 | commands(); | |
1004 | a1 = zero; | |
1005 | } | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | join() | |
1010 | { | |
1011 | register char *gp, *lp; | |
1012 | register *a1; | |
1013 | ||
1014 | gp = genbuf; | |
1015 | for (a1=addr1; a1<=addr2; a1++) { | |
1016 | lp = getline(*a1); | |
1017 | while (*gp = *lp++) | |
1018 | if (gp++ >= &genbuf[LBSIZE-2]) | |
1019 | error(Q); | |
1020 | } | |
1021 | lp = linebuf; | |
1022 | gp = genbuf; | |
1023 | while (*lp++ = *gp++) | |
1024 | ; | |
1025 | *addr1 = putline(); | |
1026 | if (addr1<addr2) | |
1027 | rdelete(addr1+1, addr2); | |
1028 | dot = addr1; | |
1029 | } | |
1030 | ||
1031 | substitute(inglob) | |
1032 | { | |
1033 | register *markp, *a1, nl; | |
1034 | int gsubf; | |
1035 | int getsub(); | |
1036 | ||
1037 | gsubf = compsub(); | |
1038 | for (a1 = addr1; a1 <= addr2; a1++) { | |
1039 | int *ozero; | |
1040 | if (execute(0, a1)==0) | |
1041 | continue; | |
1042 | inglob |= 01; | |
1043 | dosub(); | |
1044 | if (gsubf) { | |
1045 | while (*loc2) { | |
1046 | if (execute(1, (int *)0)==0) | |
1047 | break; | |
1048 | dosub(); | |
1049 | } | |
1050 | } | |
1051 | subnewa = putline(); | |
1052 | *a1 &= ~01; | |
1053 | if (anymarks) { | |
1054 | for (markp = names; markp < &names[26]; markp++) | |
1055 | if (*markp == *a1) | |
1056 | *markp = subnewa; | |
1057 | } | |
1058 | subolda = *a1; | |
1059 | *a1 = subnewa; | |
1060 | ozero = zero; | |
1061 | nl = append(getsub, a1); | |
1062 | nl += zero-ozero; | |
1063 | a1 += nl; | |
1064 | addr2 += nl; | |
1065 | } | |
1066 | if (inglob==0) | |
1067 | error(Q); | |
1068 | } | |
1069 | ||
1070 | compsub() | |
1071 | { | |
1072 | register seof, c; | |
1073 | register char *p; | |
1074 | ||
1075 | if ((seof = getchr()) == '\n' || seof == ' ') | |
1076 | error(Q); | |
1077 | compile(seof); | |
1078 | p = rhsbuf; | |
1079 | for (;;) { | |
1080 | c = getchr(); | |
1081 | if (c=='\\') | |
1082 | c = getchr() | 0200; | |
1083 | if (c=='\n') { | |
1084 | if (globp) | |
1085 | c |= 0200; | |
1086 | else | |
1087 | error(Q); | |
1088 | } | |
1089 | if (c==seof) | |
1090 | break; | |
1091 | *p++ = c; | |
1092 | if (p >= &rhsbuf[LBSIZE/2]) | |
1093 | error(Q); | |
1094 | } | |
1095 | *p++ = 0; | |
1096 | if ((peekc = getchr()) == 'g') { | |
1097 | peekc = 0; | |
1098 | newline(); | |
1099 | return(1); | |
1100 | } | |
1101 | newline(); | |
1102 | return(0); | |
1103 | } | |
1104 | ||
1105 | getsub() | |
1106 | { | |
1107 | register char *p1, *p2; | |
1108 | ||
1109 | p1 = linebuf; | |
1110 | if ((p2 = linebp) == 0) | |
1111 | return(EOF); | |
1112 | while (*p1++ = *p2++) | |
1113 | ; | |
1114 | linebp = 0; | |
1115 | return(0); | |
1116 | } | |
1117 | ||
1118 | dosub() | |
1119 | { | |
1120 | register char *lp, *sp, *rp; | |
1121 | int c; | |
1122 | ||
1123 | lp = linebuf; | |
1124 | sp = genbuf; | |
1125 | rp = rhsbuf; | |
1126 | while (lp < loc1) | |
1127 | *sp++ = *lp++; | |
1128 | while (c = *rp++&0377) { | |
1129 | if (c=='&') { | |
1130 | sp = place(sp, loc1, loc2); | |
1131 | continue; | |
1132 | } else if (c&0200 && (c &= 0177) >='1' && c < nbra+'1') { | |
1133 | sp = place(sp, braslist[c-'1'], braelist[c-'1']); | |
1134 | continue; | |
1135 | } | |
1136 | *sp++ = c&0177; | |
1137 | if (sp >= &genbuf[LBSIZE]) | |
1138 | error(Q); | |
1139 | } | |
1140 | lp = loc2; | |
1141 | loc2 = sp - genbuf + linebuf; | |
1142 | while (*sp++ = *lp++) | |
1143 | if (sp >= &genbuf[LBSIZE]) | |
1144 | error(Q); | |
1145 | lp = linebuf; | |
1146 | sp = genbuf; | |
1147 | while (*lp++ = *sp++) | |
1148 | ; | |
1149 | } | |
1150 | ||
1151 | char * | |
1152 | place(sp, l1, l2) | |
1153 | register char *sp, *l1, *l2; | |
1154 | { | |
1155 | ||
1156 | while (l1 < l2) { | |
1157 | *sp++ = *l1++; | |
1158 | if (sp >= &genbuf[LBSIZE]) | |
1159 | error(Q); | |
1160 | } | |
1161 | return(sp); | |
1162 | } | |
1163 | ||
1164 | move(cflag) | |
1165 | { | |
1166 | register int *adt, *ad1, *ad2; | |
1167 | int getcopy(); | |
1168 | ||
1169 | setdot(); | |
1170 | nonzero(); | |
1171 | if ((adt = address())==0) | |
1172 | error(Q); | |
1173 | newline(); | |
1174 | if (cflag) { | |
1175 | int *ozero, delta; | |
1176 | ad1 = dol; | |
1177 | ozero = zero; | |
1178 | append(getcopy, ad1++); | |
1179 | ad2 = dol; | |
1180 | delta = zero - ozero; | |
1181 | ad1 += delta; | |
1182 | adt += delta; | |
1183 | } else { | |
1184 | ad2 = addr2; | |
1185 | for (ad1 = addr1; ad1 <= ad2;) | |
1186 | *ad1++ &= ~01; | |
1187 | ad1 = addr1; | |
1188 | } | |
1189 | ad2++; | |
1190 | if (adt<ad1) { | |
1191 | dot = adt + (ad2-ad1); | |
1192 | if ((++adt)==ad1) | |
1193 | return; | |
1194 | reverse(adt, ad1); | |
1195 | reverse(ad1, ad2); | |
1196 | reverse(adt, ad2); | |
1197 | } else if (adt >= ad2) { | |
1198 | dot = adt++; | |
1199 | reverse(ad1, ad2); | |
1200 | reverse(ad2, adt); | |
1201 | reverse(ad1, adt); | |
1202 | } else | |
1203 | error(Q); | |
1204 | fchange = 1; | |
1205 | } | |
1206 | ||
1207 | reverse(a1, a2) | |
1208 | register int *a1, *a2; | |
1209 | { | |
1210 | register int t; | |
1211 | ||
1212 | for (;;) { | |
1213 | t = *--a2; | |
1214 | if (a2 <= a1) | |
1215 | return; | |
1216 | *a2 = *a1; | |
1217 | *a1++ = t; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | getcopy() | |
1222 | { | |
1223 | if (addr1 > addr2) | |
1224 | return(EOF); | |
1225 | getline(*addr1++); | |
1226 | return(0); | |
1227 | } | |
1228 | ||
1229 | compile(aeof) | |
1230 | { | |
1231 | register eof, c; | |
1232 | register char *ep; | |
1233 | char *lastep; | |
1234 | char bracket[NBRA], *bracketp; | |
1235 | int cclcnt; | |
1236 | ||
1237 | ep = expbuf; | |
1238 | eof = aeof; | |
1239 | bracketp = bracket; | |
1240 | if ((c = getchr()) == eof) { | |
1241 | if (*ep==0) | |
1242 | error(Q); | |
1243 | return; | |
1244 | } | |
1245 | circfl = 0; | |
1246 | nbra = 0; | |
1247 | if (c=='^') { | |
1248 | c = getchr(); | |
1249 | circfl++; | |
1250 | } | |
1251 | peekc = c; | |
1252 | lastep = 0; | |
1253 | for (;;) { | |
1254 | if (ep >= &expbuf[ESIZE]) | |
1255 | goto cerror; | |
1256 | c = getchr(); | |
1257 | if (c==eof) { | |
1258 | if (bracketp != bracket) | |
1259 | goto cerror; | |
1260 | *ep++ = CEOF; | |
1261 | return; | |
1262 | } | |
1263 | if (c!='*') | |
1264 | lastep = ep; | |
1265 | switch (c) { | |
1266 | ||
1267 | case '\\': | |
1268 | if ((c = getchr())=='(') { | |
1269 | if (nbra >= NBRA) | |
1270 | goto cerror; | |
1271 | *bracketp++ = nbra; | |
1272 | *ep++ = CBRA; | |
1273 | *ep++ = nbra++; | |
1274 | continue; | |
1275 | } | |
1276 | if (c == ')') { | |
1277 | if (bracketp <= bracket) | |
1278 | goto cerror; | |
1279 | *ep++ = CKET; | |
1280 | *ep++ = *--bracketp; | |
1281 | continue; | |
1282 | } | |
1283 | if (c>='1' && c<'1'+NBRA) { | |
1284 | *ep++ = CBACK; | |
1285 | *ep++ = c-'1'; | |
1286 | continue; | |
1287 | } | |
1288 | *ep++ = CCHR; | |
1289 | if (c=='\n') | |
1290 | goto cerror; | |
1291 | *ep++ = c; | |
1292 | continue; | |
1293 | ||
1294 | case '.': | |
1295 | *ep++ = CDOT; | |
1296 | continue; | |
1297 | ||
1298 | case '\n': | |
1299 | goto cerror; | |
1300 | ||
1301 | case '*': | |
1302 | if (lastep==0 || *lastep==CBRA || *lastep==CKET) | |
1303 | goto defchar; | |
1304 | *lastep |= STAR; | |
1305 | continue; | |
1306 | ||
1307 | case '$': | |
1308 | if ((peekc=getchr()) != eof) | |
1309 | goto defchar; | |
1310 | *ep++ = CDOL; | |
1311 | continue; | |
1312 | ||
1313 | case '[': | |
1314 | *ep++ = CCL; | |
1315 | *ep++ = 0; | |
1316 | cclcnt = 1; | |
1317 | if ((c=getchr()) == '^') { | |
1318 | c = getchr(); | |
1319 | ep[-2] = NCCL; | |
1320 | } | |
1321 | do { | |
1322 | if (c=='\n') | |
1323 | goto cerror; | |
1324 | if (c=='-' && ep[-1]!=0) { | |
1325 | if ((c=getchr())==']') { | |
1326 | *ep++ = '-'; | |
1327 | cclcnt++; | |
1328 | break; | |
1329 | } | |
1330 | while (ep[-1]<c) { | |
1331 | *ep = ep[-1]+1; | |
1332 | ep++; | |
1333 | cclcnt++; | |
1334 | if (ep>=&expbuf[ESIZE]) | |
1335 | goto cerror; | |
1336 | } | |
1337 | } | |
1338 | *ep++ = c; | |
1339 | cclcnt++; | |
1340 | if (ep >= &expbuf[ESIZE]) | |
1341 | goto cerror; | |
1342 | } while ((c = getchr()) != ']'); | |
1343 | lastep[1] = cclcnt; | |
1344 | continue; | |
1345 | ||
1346 | defchar: | |
1347 | default: | |
1348 | *ep++ = CCHR; | |
1349 | *ep++ = c; | |
1350 | } | |
1351 | } | |
1352 | cerror: | |
1353 | expbuf[0] = 0; | |
1354 | nbra = 0; | |
1355 | error(Q); | |
1356 | } | |
1357 | ||
1358 | execute(gf, addr) | |
1359 | int *addr; | |
1360 | { | |
1361 | register char *p1, *p2, c; | |
1362 | ||
1363 | for (c=0; c<NBRA; c++) { | |
1364 | braslist[c] = 0; | |
1365 | braelist[c] = 0; | |
1366 | } | |
1367 | if (gf) { | |
1368 | if (circfl) | |
1369 | return(0); | |
1370 | p1 = linebuf; | |
1371 | p2 = genbuf; | |
1372 | while (*p1++ = *p2++) | |
1373 | ; | |
1374 | locs = p1 = loc2; | |
1375 | } else { | |
1376 | if (addr==zero) | |
1377 | return(0); | |
1378 | p1 = getline(*addr); | |
1379 | locs = 0; | |
1380 | } | |
1381 | p2 = expbuf; | |
1382 | if (circfl) { | |
1383 | loc1 = p1; | |
1384 | return(advance(p1, p2)); | |
1385 | } | |
1386 | /* fast check for first character */ | |
1387 | if (*p2==CCHR) { | |
1388 | c = p2[1]; | |
1389 | do { | |
1390 | if (*p1!=c) | |
1391 | continue; | |
1392 | if (advance(p1, p2)) { | |
1393 | loc1 = p1; | |
1394 | return(1); | |
1395 | } | |
1396 | } while (*p1++); | |
1397 | return(0); | |
1398 | } | |
1399 | /* regular algorithm */ | |
1400 | do { | |
1401 | if (advance(p1, p2)) { | |
1402 | loc1 = p1; | |
1403 | return(1); | |
1404 | } | |
1405 | } while (*p1++); | |
1406 | return(0); | |
1407 | } | |
1408 | ||
1409 | advance(lp, ep) | |
1410 | register char *ep, *lp; | |
1411 | { | |
1412 | register char *curlp; | |
1413 | int i; | |
1414 | ||
1415 | for (;;) switch (*ep++) { | |
1416 | ||
1417 | case CCHR: | |
1418 | if (*ep++ == *lp++) | |
1419 | continue; | |
1420 | return(0); | |
1421 | ||
1422 | case CDOT: | |
1423 | if (*lp++) | |
1424 | continue; | |
1425 | return(0); | |
1426 | ||
1427 | case CDOL: | |
1428 | if (*lp==0) | |
1429 | continue; | |
1430 | return(0); | |
1431 | ||
1432 | case CEOF: | |
1433 | loc2 = lp; | |
1434 | return(1); | |
1435 | ||
1436 | case CCL: | |
1437 | if (cclass(ep, *lp++, 1)) { | |
1438 | ep += *ep; | |
1439 | continue; | |
1440 | } | |
1441 | return(0); | |
1442 | ||
1443 | case NCCL: | |
1444 | if (cclass(ep, *lp++, 0)) { | |
1445 | ep += *ep; | |
1446 | continue; | |
1447 | } | |
1448 | return(0); | |
1449 | ||
1450 | case CBRA: | |
1451 | braslist[*ep++] = lp; | |
1452 | continue; | |
1453 | ||
1454 | case CKET: | |
1455 | braelist[*ep++] = lp; | |
1456 | continue; | |
1457 | ||
1458 | case CBACK: | |
1459 | if (braelist[i = *ep++]==0) | |
1460 | error(Q); | |
1461 | if (backref(i, lp)) { | |
1462 | lp += braelist[i] - braslist[i]; | |
1463 | continue; | |
1464 | } | |
1465 | return(0); | |
1466 | ||
1467 | case CBACK|STAR: | |
1468 | if (braelist[i = *ep++] == 0) | |
1469 | error(Q); | |
1470 | curlp = lp; | |
1471 | while (backref(i, lp)) | |
1472 | lp += braelist[i] - braslist[i]; | |
1473 | while (lp >= curlp) { | |
1474 | if (advance(lp, ep)) | |
1475 | return(1); | |
1476 | lp -= braelist[i] - braslist[i]; | |
1477 | } | |
1478 | continue; | |
1479 | ||
1480 | case CDOT|STAR: | |
1481 | curlp = lp; | |
1482 | while (*lp++) | |
1483 | ; | |
1484 | goto star; | |
1485 | ||
1486 | case CCHR|STAR: | |
1487 | curlp = lp; | |
1488 | while (*lp++ == *ep) | |
1489 | ; | |
1490 | ep++; | |
1491 | goto star; | |
1492 | ||
1493 | case CCL|STAR: | |
1494 | case NCCL|STAR: | |
1495 | curlp = lp; | |
1496 | while (cclass(ep, *lp++, ep[-1]==(CCL|STAR))) | |
1497 | ; | |
1498 | ep += *ep; | |
1499 | goto star; | |
1500 | ||
1501 | star: | |
1502 | do { | |
1503 | lp--; | |
1504 | if (lp==locs) | |
1505 | break; | |
1506 | if (advance(lp, ep)) | |
1507 | return(1); | |
1508 | } while (lp > curlp); | |
1509 | return(0); | |
1510 | ||
1511 | default: | |
1512 | error(Q); | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | backref(i, lp) | |
1517 | register i; | |
1518 | register char *lp; | |
1519 | { | |
1520 | register char *bp; | |
1521 | ||
1522 | bp = braslist[i]; | |
1523 | while (*bp++ == *lp++) | |
1524 | if (bp >= braelist[i]) | |
1525 | return(1); | |
1526 | return(0); | |
1527 | } | |
1528 | ||
1529 | cclass(set, c, af) | |
1530 | register char *set, c; | |
1531 | { | |
1532 | register n; | |
1533 | ||
1534 | if (c==0) | |
1535 | return(0); | |
1536 | n = *set++; | |
1537 | while (--n) | |
1538 | if (*set++ == c) | |
1539 | return(af); | |
1540 | return(!af); | |
1541 | } | |
1542 | ||
1543 | putd() | |
1544 | { | |
1545 | register r; | |
1546 | ||
1547 | r = count%10; | |
1548 | count /= 10; | |
1549 | if (count) | |
1550 | putd(); | |
1551 | putchr(r + '0'); | |
1552 | } | |
1553 | ||
1554 | puts(sp) | |
1555 | register char *sp; | |
1556 | { | |
1557 | col = 0; | |
1558 | while (*sp) | |
1559 | putchr(*sp++); | |
1560 | putchr('\n'); | |
1561 | } | |
1562 | ||
1563 | char line[70]; | |
1564 | char *linp = line; | |
1565 | ||
1566 | putchr(ac) | |
1567 | { | |
1568 | register char *lp; | |
1569 | register c; | |
1570 | ||
1571 | lp = linp; | |
1572 | c = ac; | |
1573 | if (listf) { | |
1574 | col++; | |
1575 | if (col >= 72) { | |
1576 | col = 0; | |
1577 | *lp++ = '\\'; | |
1578 | *lp++ = '\n'; | |
1579 | } | |
1580 | if (c=='\t') { | |
1581 | c = '>'; | |
1582 | goto esc; | |
1583 | } | |
1584 | if (c=='\b') { | |
1585 | c = '<'; | |
1586 | esc: | |
1587 | *lp++ = '-'; | |
1588 | *lp++ = '\b'; | |
1589 | *lp++ = c; | |
1590 | goto out; | |
1591 | } | |
1592 | if (c<' ' && c!= '\n') { | |
1593 | *lp++ = '\\'; | |
1594 | *lp++ = (c>>3)+'0'; | |
1595 | *lp++ = (c&07)+'0'; | |
1596 | col += 2; | |
1597 | goto out; | |
1598 | } | |
1599 | } | |
1600 | *lp++ = c; | |
1601 | out: | |
1602 | if(c == '\n' || lp >= &line[64]) { | |
1603 | linp = line; | |
1604 | write(1, line, lp-line); | |
1605 | return; | |
1606 | } | |
1607 | linp = lp; | |
1608 | } | |
62793f1c | 1609 |