Commit | Line | Data |
---|---|---|
b6ea9402 MH |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
2 | #include "ex.h" | |
3 | #include "ex_re.h" | |
4 | #include "ex_tty.h" | |
5 | #include "ex_vis.h" | |
6 | ||
7 | /* | |
8 | * Random routines, in alphabetical order. | |
9 | */ | |
10 | ||
11 | any(c, s) | |
12 | int c; | |
13 | register char *s; | |
14 | { | |
15 | register int x; | |
16 | ||
17 | while (x = *s++) | |
18 | if (x == c) | |
19 | return (1); | |
20 | return (0); | |
21 | } | |
22 | ||
23 | backtab(i) | |
24 | register int i; | |
25 | { | |
26 | register int j; | |
27 | ||
28 | j = i % value(SHIFTWIDTH); | |
29 | if (j == 0) | |
30 | j = value(SHIFTWIDTH); | |
31 | i -= j; | |
32 | if (i < 0) | |
33 | i = 0; | |
34 | return (i); | |
35 | } | |
36 | ||
37 | change() | |
38 | { | |
39 | ||
40 | tchng++; | |
41 | chng = tchng; | |
42 | } | |
43 | ||
44 | /* | |
45 | * Column returns the number of | |
46 | * columns occupied by printing the | |
47 | * characters through position cp of the | |
48 | * current line. | |
49 | */ | |
50 | column(cp) | |
51 | register char *cp; | |
52 | { | |
53 | ||
54 | if (cp == 0) | |
55 | cp = &linebuf[LBSIZE - 2]; | |
56 | return (qcolumn(cp, (char *) 0)); | |
57 | } | |
58 | ||
d266c416 MH |
59 | /* |
60 | * Ignore a comment to the end of the line. | |
61 | * This routine eats the trailing newline so don't call newline(). | |
62 | */ | |
63 | comment() | |
64 | { | |
65 | register int c; | |
66 | ||
67 | do { | |
68 | c = getchar(); | |
69 | } while (c != '\n' && c != EOF); | |
70 | if (c == EOF) | |
71 | ungetchar(c); | |
72 | } | |
73 | ||
b6ea9402 MH |
74 | Copy(to, from, size) |
75 | register char *from, *to; | |
76 | register int size; | |
77 | { | |
78 | ||
79 | if (size > 0) | |
80 | do | |
81 | *to++ = *from++; | |
82 | while (--size > 0); | |
83 | } | |
84 | ||
85 | copyw(to, from, size) | |
86 | register line *from, *to; | |
87 | register int size; | |
88 | { | |
89 | ||
90 | if (size > 0) | |
91 | do | |
92 | *to++ = *from++; | |
93 | while (--size > 0); | |
94 | } | |
95 | ||
96 | copywR(to, from, size) | |
97 | register line *from, *to; | |
98 | register int size; | |
99 | { | |
100 | ||
101 | while (--size >= 0) | |
102 | to[size] = from[size]; | |
103 | } | |
104 | ||
105 | ctlof(c) | |
106 | int c; | |
107 | { | |
108 | ||
109 | return (c == TRIM ? '?' : c | ('A' - 1)); | |
110 | } | |
111 | ||
112 | dingdong() | |
113 | { | |
114 | ||
115 | if (VB) | |
116 | putpad(VB); | |
117 | else if (value(ERRORBELLS)) | |
118 | putch('\207'); | |
119 | } | |
120 | ||
121 | fixindent(indent) | |
122 | int indent; | |
123 | { | |
124 | register int i; | |
125 | register char *cp; | |
126 | ||
127 | i = whitecnt(genbuf); | |
128 | cp = vpastwh(genbuf); | |
129 | if (*cp == 0 && i == indent && linebuf[0] == 0) { | |
130 | genbuf[0] = 0; | |
131 | return (i); | |
132 | } | |
133 | CP(genindent(i), cp); | |
134 | return (i); | |
135 | } | |
136 | ||
137 | filioerr(cp) | |
138 | char *cp; | |
139 | { | |
140 | register int oerrno = errno; | |
141 | ||
142 | lprintf("\"%s\"", cp); | |
143 | errno = oerrno; | |
144 | syserror(); | |
145 | } | |
146 | ||
147 | char * | |
148 | genindent(indent) | |
149 | register int indent; | |
150 | { | |
151 | register char *cp; | |
152 | ||
153 | for (cp = genbuf; indent >= value(TABSTOP); indent -= value(TABSTOP)) | |
154 | *cp++ = '\t'; | |
155 | for (; indent > 0; indent--) | |
156 | *cp++ = ' '; | |
157 | return (cp); | |
158 | } | |
159 | ||
160 | getDOT() | |
161 | { | |
162 | ||
163 | getline(*dot); | |
164 | } | |
165 | ||
166 | line * | |
167 | getmark(c) | |
168 | register int c; | |
169 | { | |
170 | register line *addr; | |
171 | ||
172 | for (addr = one; addr <= dol; addr++) | |
173 | if (names[c - 'a'] == (*addr &~ 01)) { | |
174 | return (addr); | |
175 | } | |
176 | return (0); | |
177 | } | |
178 | ||
179 | getn(cp) | |
180 | register char *cp; | |
181 | { | |
182 | register int i = 0; | |
183 | ||
184 | while (isdigit(*cp)) | |
185 | i = i * 10 + *cp++ - '0'; | |
186 | if (*cp) | |
187 | return (0); | |
188 | return (i); | |
189 | } | |
190 | ||
191 | ignnEOF() | |
192 | { | |
193 | register int c = getchar(); | |
194 | ||
195 | if (c == EOF) | |
196 | ungetchar(c); | |
d266c416 MH |
197 | else if (c=='"') |
198 | comment(); | |
b6ea9402 MH |
199 | } |
200 | ||
201 | iswhite(c) | |
202 | int c; | |
203 | { | |
204 | ||
205 | return (c == ' ' || c == '\t'); | |
206 | } | |
207 | ||
208 | junk(c) | |
209 | register int c; | |
210 | { | |
211 | ||
212 | if (c && !value(BEAUTIFY)) | |
213 | return (0); | |
214 | if (c >= ' ' && c != TRIM) | |
215 | return (0); | |
216 | switch (c) { | |
217 | ||
218 | case '\t': | |
219 | case '\n': | |
220 | case '\f': | |
221 | return (0); | |
222 | ||
223 | default: | |
224 | return (1); | |
225 | } | |
226 | } | |
227 | ||
228 | killed() | |
229 | { | |
230 | ||
231 | killcnt(addr2 - addr1 + 1); | |
232 | } | |
233 | ||
234 | killcnt(cnt) | |
235 | register int cnt; | |
236 | { | |
237 | ||
238 | if (inopen) { | |
239 | notecnt = cnt; | |
240 | notenam = notesgn = ""; | |
241 | return; | |
242 | } | |
243 | if (!notable(cnt)) | |
244 | return; | |
245 | printf("%d lines", cnt); | |
246 | if (value(TERSE) == 0) { | |
247 | printf(" %c%s", Command[0] | ' ', Command + 1); | |
248 | if (Command[strlen(Command) - 1] != 'e') | |
249 | putchar('e'); | |
250 | putchar('d'); | |
251 | } | |
252 | putNFL(); | |
253 | } | |
254 | ||
255 | lineno(a) | |
256 | line *a; | |
257 | { | |
258 | ||
259 | return (a - zero); | |
260 | } | |
261 | ||
262 | lineDOL() | |
263 | { | |
264 | ||
265 | return (lineno(dol)); | |
266 | } | |
267 | ||
268 | lineDOT() | |
269 | { | |
270 | ||
271 | return (lineno(dot)); | |
272 | } | |
273 | ||
274 | markDOT() | |
275 | { | |
276 | ||
277 | markpr(dot); | |
278 | } | |
279 | ||
280 | markpr(which) | |
281 | line *which; | |
282 | { | |
283 | ||
284 | if ((inglobal == 0 || inopen) && which <= endcore) { | |
285 | names['z'-'a'+1] = *which & ~01; | |
286 | if (inopen) | |
287 | ncols['z'-'a'+1] = cursor; | |
288 | } | |
289 | } | |
290 | ||
291 | markreg(c) | |
292 | register int c; | |
293 | { | |
294 | ||
295 | if (c == '\'' || c == '`') | |
296 | return ('z' + 1); | |
297 | if (c >= 'a' && c <= 'z') | |
298 | return (c); | |
299 | return (0); | |
300 | } | |
301 | ||
302 | /* | |
303 | * Mesg decodes the terse/verbose strings. Thus | |
304 | * 'xxx@yyy' -> 'xxx' if terse, else 'xxx yyy' | |
305 | * 'xxx|yyy' -> 'xxx' if terse, else 'yyy' | |
306 | * All others map to themselves. | |
307 | */ | |
308 | char * | |
309 | mesg(str) | |
310 | register char *str; | |
311 | { | |
312 | register char *cp; | |
313 | ||
314 | str = strcpy(genbuf, str); | |
315 | for (cp = str; *cp; cp++) | |
316 | switch (*cp) { | |
317 | ||
318 | case '@': | |
319 | if (value(TERSE)) | |
320 | *cp = 0; | |
321 | else | |
322 | *cp = ' '; | |
323 | break; | |
324 | ||
325 | case '|': | |
326 | if (value(TERSE) == 0) | |
327 | return (cp + 1); | |
328 | *cp = 0; | |
329 | break; | |
330 | } | |
331 | return (str); | |
332 | } | |
333 | ||
334 | /*VARARGS2*/ | |
335 | merror(seekpt, i) | |
44232d5b | 336 | #ifdef VMUNIX |
b6ea9402 MH |
337 | char *seekpt; |
338 | #else | |
44232d5b MH |
339 | # ifdef lint |
340 | char *seekpt; | |
341 | # else | |
b6ea9402 | 342 | int seekpt; |
44232d5b | 343 | # endif |
b6ea9402 MH |
344 | #endif |
345 | int i; | |
346 | { | |
347 | register char *cp = linebuf; | |
348 | ||
349 | if (seekpt == 0) | |
350 | return; | |
351 | merror1(seekpt); | |
352 | if (*cp == '\n') | |
353 | putnl(), cp++; | |
354 | if (inopen && CE) | |
355 | vclreol(); | |
356 | if (SO && SE) | |
357 | putpad(SO); | |
358 | printf(mesg(cp), i); | |
359 | if (SO && SE) | |
360 | putpad(SE); | |
361 | } | |
362 | ||
363 | merror1(seekpt) | |
44232d5b | 364 | #ifdef VMUNIX |
b6ea9402 MH |
365 | char *seekpt; |
366 | #else | |
44232d5b MH |
367 | # ifdef lint |
368 | char *seekpt; | |
369 | # else | |
b6ea9402 | 370 | int seekpt; |
44232d5b | 371 | # endif |
b6ea9402 MH |
372 | #endif |
373 | { | |
374 | ||
44232d5b MH |
375 | #ifdef VMUNIX |
376 | strcpy(linebuf, seekpt); | |
377 | #else | |
b6ea9402 MH |
378 | lseek(erfile, (long) seekpt, 0); |
379 | if (read(erfile, linebuf, 128) < 2) | |
380 | CP(linebuf, "ERROR"); | |
44232d5b | 381 | #endif |
b6ea9402 MH |
382 | } |
383 | ||
384 | morelines() | |
385 | { | |
386 | ||
387 | if ((int) sbrk(1024 * sizeof (line)) == -1) | |
388 | return (-1); | |
389 | endcore += 1024; | |
390 | return (0); | |
391 | } | |
392 | ||
393 | nonzero() | |
394 | { | |
395 | ||
396 | if (addr1 == zero) { | |
397 | notempty(); | |
398 | error("Nonzero address required@on this command"); | |
399 | } | |
400 | } | |
401 | ||
402 | notable(i) | |
403 | int i; | |
404 | { | |
405 | ||
406 | return (hush == 0 && !inglobal && i > value(REPORT)); | |
407 | } | |
408 | ||
409 | ||
410 | notempty() | |
411 | { | |
412 | ||
413 | if (dol == zero) | |
414 | error("No lines@in the buffer"); | |
415 | } | |
416 | ||
417 | ||
418 | netchHAD(cnt) | |
419 | int cnt; | |
420 | { | |
421 | ||
422 | netchange(lineDOL() - cnt); | |
423 | } | |
424 | ||
425 | netchange(i) | |
426 | register int i; | |
427 | { | |
428 | register char *cp; | |
429 | ||
430 | if (i > 0) | |
431 | notesgn = cp = "more "; | |
432 | else | |
433 | notesgn = cp = "fewer ", i = -i; | |
434 | if (inopen) { | |
435 | notecnt = i; | |
436 | notenam = ""; | |
437 | return; | |
438 | } | |
439 | if (!notable(i)) | |
440 | return; | |
441 | printf(mesg("%d %slines@in file after %s"), i, cp, Command); | |
442 | putNFL(); | |
443 | } | |
444 | ||
445 | putmark(addr) | |
446 | line *addr; | |
447 | { | |
448 | ||
449 | putmk1(addr, putline()); | |
450 | } | |
451 | ||
452 | putmk1(addr, n) | |
453 | register line *addr; | |
454 | int n; | |
455 | { | |
456 | register line *markp; | |
d266c416 | 457 | register oldglobmk; |
b6ea9402 | 458 | |
d266c416 | 459 | oldglobmk = *addr & 1; |
b6ea9402 MH |
460 | *addr &= ~1; |
461 | for (markp = (anymarks ? names : &names['z'-'a'+1]); | |
462 | markp <= &names['z'-'a'+1]; markp++) | |
463 | if (*markp == *addr) | |
464 | *markp = n; | |
d266c416 | 465 | *addr = n | oldglobmk; |
b6ea9402 MH |
466 | } |
467 | ||
468 | char * | |
469 | plural(i) | |
470 | long i; | |
471 | { | |
472 | ||
473 | return (i == 1 ? "" : "s"); | |
474 | } | |
475 | ||
476 | int qcount(); | |
477 | short vcntcol; | |
478 | ||
479 | qcolumn(lim, gp) | |
480 | register char *lim, *gp; | |
481 | { | |
482 | register int x; | |
483 | int (*OO)(); | |
484 | ||
485 | OO = Outchar; | |
486 | Outchar = qcount; | |
487 | vcntcol = 0; | |
488 | if (lim != NULL) | |
489 | x = lim[1], lim[1] = 0; | |
490 | pline(0); | |
491 | if (lim != NULL) | |
492 | lim[1] = x; | |
493 | if (gp) | |
494 | while (*gp) | |
495 | putchar(*gp++); | |
496 | Outchar = OO; | |
497 | return (vcntcol); | |
498 | } | |
499 | ||
500 | int | |
501 | qcount(c) | |
502 | int c; | |
503 | { | |
504 | ||
505 | if (c == '\t') { | |
506 | vcntcol += value(TABSTOP) - vcntcol % value(TABSTOP); | |
507 | return; | |
508 | } | |
509 | vcntcol++; | |
510 | } | |
511 | ||
512 | reverse(a1, a2) | |
513 | register line *a1, *a2; | |
514 | { | |
515 | register line t; | |
516 | ||
517 | for (;;) { | |
518 | t = *--a2; | |
519 | if (a2 <= a1) | |
520 | return; | |
521 | *a2 = *a1; | |
522 | *a1++ = t; | |
523 | } | |
524 | } | |
525 | ||
526 | save(a1, a2) | |
527 | line *a1; | |
528 | register line *a2; | |
529 | { | |
530 | register int more; | |
531 | ||
887e3e0d MH |
532 | if (!FIXUNDO) |
533 | return; | |
534 | #ifdef TRACE | |
535 | if (trace) | |
536 | vudump("before save"); | |
537 | #endif | |
b6ea9402 MH |
538 | undkind = UNDNONE; |
539 | undadot = dot; | |
540 | more = (a2 - a1 + 1) - (unddol - dol); | |
541 | while (more > (endcore - truedol)) | |
542 | if (morelines() < 0) | |
543 | error("Out of memory@saving lines for undo - try using ed or re"); | |
544 | if (more) | |
545 | (*(more > 0 ? copywR : copyw))(unddol + more + 1, unddol + 1, | |
546 | (truedol - unddol)); | |
547 | unddol += more; | |
548 | truedol += more; | |
549 | copyw(dol + 1, a1, a2 - a1 + 1); | |
550 | undkind = UNDALL; | |
551 | unddel = a1 - 1; | |
552 | undap1 = a1; | |
553 | undap2 = a2 + 1; | |
887e3e0d MH |
554 | #ifdef TRACE |
555 | if (trace) | |
556 | vudump("after save"); | |
557 | #endif | |
b6ea9402 MH |
558 | } |
559 | ||
560 | save12() | |
561 | { | |
562 | ||
563 | save(addr1, addr2); | |
564 | } | |
565 | ||
566 | saveall() | |
567 | { | |
568 | ||
569 | save(one, dol); | |
570 | } | |
571 | ||
572 | span() | |
573 | { | |
574 | ||
575 | return (addr2 - addr1 + 1); | |
576 | } | |
577 | ||
578 | sync() | |
579 | { | |
580 | ||
581 | chng = 0; | |
582 | tchng = 0; | |
583 | xchng = 0; | |
584 | } | |
585 | ||
586 | ||
587 | skipwh() | |
588 | { | |
589 | register int wh; | |
590 | ||
591 | wh = 0; | |
592 | while (iswhite(peekchar())) { | |
593 | wh++; | |
594 | ignchar(); | |
595 | } | |
596 | return (wh); | |
597 | } | |
598 | ||
599 | /*VARARGS2*/ | |
600 | smerror(seekpt, cp) | |
601 | #ifdef lint | |
602 | char *seekpt; | |
603 | #else | |
604 | int seekpt; | |
605 | #endif | |
606 | char *cp; | |
607 | { | |
608 | ||
609 | if (seekpt == 0) | |
610 | return; | |
611 | merror1(seekpt); | |
612 | if (inopen && CE) | |
613 | vclreol(); | |
614 | if (SO && SE) | |
615 | putpad(SO); | |
616 | lprintf(mesg(linebuf), cp); | |
617 | if (SO && SE) | |
618 | putpad(SE); | |
619 | } | |
620 | ||
621 | #define std_nerrs (sizeof std_errlist / sizeof std_errlist[0]) | |
622 | ||
623 | #define error(i) i | |
624 | ||
625 | #ifdef lint | |
626 | char *std_errlist[] = { | |
627 | #else | |
887e3e0d | 628 | # ifdef VMUNIX |
44232d5b | 629 | char *std_errlist[] = { |
887e3e0d | 630 | # else |
b6ea9402 | 631 | short std_errlist[] = { |
887e3e0d | 632 | # endif |
b6ea9402 MH |
633 | #endif |
634 | error("Error 0"), | |
635 | error("Not super-user"), | |
636 | error("No such file or directory"), | |
637 | error("No such process"), | |
638 | error("Interrupted system call"), | |
639 | error("Physical I/O error"), | |
640 | error("No such device or address"), | |
641 | error("Argument list too long"), | |
642 | error("Exec format error"), | |
643 | error("Bad file number"), | |
644 | error("No children"), | |
645 | error("No more processes"), | |
646 | error("Not enough core"), | |
647 | error("Permission denied"), | |
648 | error("Bad address"), | |
649 | error("Block device required"), | |
650 | error("Mount device busy"), | |
651 | error("File exists"), | |
652 | error("Cross-device link"), | |
653 | error("No such device"), | |
654 | error("Not a directory"), | |
655 | error("Is a directory"), | |
656 | error("Invalid argument"), | |
657 | error("File table overflow"), | |
658 | error("Too many open files"), | |
659 | error("Not a typewriter"), | |
660 | error("Text file busy"), | |
661 | error("File too large"), | |
662 | error("No space left on device"), | |
663 | error("Illegal seek"), | |
664 | error("Read-only file system"), | |
665 | error("Too many links"), | |
666 | error("Broken pipe") | |
667 | #ifndef QUOTA | |
668 | , error("Math argument") | |
669 | , error("Result too large") | |
670 | #else | |
671 | , error("Quota exceeded") | |
672 | #endif | |
673 | }; | |
674 | ||
675 | #undef error | |
676 | ||
677 | char * | |
678 | strend(cp) | |
679 | register char *cp; | |
680 | { | |
681 | ||
682 | while (*cp) | |
683 | cp++; | |
684 | return (cp); | |
685 | } | |
686 | ||
687 | strcLIN(dp) | |
688 | char *dp; | |
689 | { | |
690 | ||
691 | CP(linebuf, dp); | |
692 | } | |
693 | ||
694 | syserror() | |
695 | { | |
696 | register int e = errno; | |
697 | ||
698 | dirtcnt = 0; | |
699 | putchar(' '); | |
700 | if (e >= 0 && errno <= std_nerrs) | |
701 | error(std_errlist[e]); | |
702 | else | |
703 | error("System error %d", e); | |
704 | } | |
705 | ||
d266c416 MH |
706 | /* |
707 | * Return the column number that results from being in column col and | |
708 | * hitting a tab, where tabs are set every ts columns. Work right for | |
709 | * the case where col > COLUMNS, even if ts does not divide COLUMNS. | |
710 | */ | |
711 | tabcol(col, ts) | |
712 | int col, ts; | |
713 | { | |
714 | int offset, result; | |
715 | ||
716 | if (col >= COLUMNS) { | |
717 | offset = COLUMNS * (col/COLUMNS); | |
718 | col -= offset; | |
719 | } else | |
720 | offset = 0; | |
721 | result = col + ts - (col % ts) + offset; | |
722 | return (result); | |
723 | } | |
724 | ||
b6ea9402 MH |
725 | char * |
726 | vfindcol(i) | |
727 | int i; | |
728 | { | |
729 | register char *cp; | |
730 | register int (*OO)() = Outchar; | |
731 | ||
732 | Outchar = qcount; | |
733 | ignore(qcolumn(linebuf - 1, NOSTR)); | |
734 | for (cp = linebuf; *cp && vcntcol < i; cp++) | |
735 | putchar(*cp); | |
736 | if (cp != linebuf) | |
737 | cp--; | |
738 | Outchar = OO; | |
739 | return (cp); | |
740 | } | |
741 | ||
742 | char * | |
743 | vskipwh(cp) | |
744 | register char *cp; | |
745 | { | |
746 | ||
747 | while (iswhite(*cp) && cp[1]) | |
748 | cp++; | |
749 | return (cp); | |
750 | } | |
751 | ||
752 | ||
753 | char * | |
754 | vpastwh(cp) | |
755 | register char *cp; | |
756 | { | |
757 | ||
758 | while (iswhite(*cp)) | |
759 | cp++; | |
760 | return (cp); | |
761 | } | |
762 | ||
763 | whitecnt(cp) | |
764 | register char *cp; | |
765 | { | |
766 | register int i; | |
767 | ||
768 | i = 0; | |
769 | for (;;) | |
770 | switch (*cp++) { | |
771 | ||
772 | case '\t': | |
773 | i += value(TABSTOP) - i % value(TABSTOP); | |
774 | break; | |
775 | ||
776 | case ' ': | |
777 | i++; | |
778 | break; | |
779 | ||
780 | default: | |
781 | return (i); | |
782 | } | |
783 | } | |
784 | ||
785 | #ifdef lint | |
786 | Ignore(a) | |
787 | char *a; | |
788 | { | |
789 | ||
790 | a = a; | |
791 | } | |
792 | ||
793 | Ignorf(a) | |
794 | int (*a)(); | |
795 | { | |
796 | ||
797 | a = a; | |
798 | } | |
799 | #endif | |
800 | ||
801 | markit(addr) | |
802 | line *addr; | |
803 | { | |
804 | ||
805 | if (addr != dot && addr >= one && addr <= dol) | |
806 | markDOT(); | |
807 | } |