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1 | /*- |
2 | * Copyright (c) 1980 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.proprietary.c% | |
f9679f70 DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
2791ff57 KB |
9 | static char sccsid[] = "@(#)ex_vput.c 7.6 (Berkeley) %G%"; |
10 | #endif /* not lint */ | |
f9679f70 | 11 | |
98fb7faa MH |
12 | #include "ex.h" |
13 | #include "ex_tty.h" | |
14 | #include "ex_vis.h" | |
15 | ||
16 | /* | |
17 | * Deal with the screen, clearing, cursor positioning, putting characters | |
18 | * into the screen image, and deleting characters. | |
19 | * Really hard stuff here is utilizing insert character operations | |
20 | * on intelligent terminals which differs widely from terminal to terminal. | |
21 | */ | |
22 | vclear() | |
23 | { | |
24 | ||
25 | #ifdef ADEBUG | |
26 | if (trace) | |
27 | tfixnl(), fprintf(trace, "------\nvclear\n"); | |
28 | #endif | |
29 | tputs(CL, LINES, putch); | |
30 | destcol = 0; | |
31 | outcol = 0; | |
32 | destline = 0; | |
33 | outline = 0; | |
34 | if (inopen) | |
5a6c967e | 35 | vclrbyte(vtube0, WCOLS * (WECHO - ex_ZERO + 1)); |
98fb7faa MH |
36 | } |
37 | ||
38 | /* | |
39 | * Clear memory. | |
40 | */ | |
41 | vclrbyte(cp, i) | |
42 | register char *cp; | |
43 | register int i; | |
44 | { | |
45 | ||
46 | if (i > 0) | |
47 | do | |
48 | *cp++ = 0; | |
49 | while (--i != 0); | |
50 | } | |
51 | ||
52 | /* | |
53 | * Clear a physical display line, high level. | |
54 | */ | |
55 | vclrlin(l, tp) | |
56 | int l; | |
57 | line *tp; | |
58 | { | |
59 | ||
60 | vigoto(l, 0); | |
61 | if ((hold & HOLDAT) == 0) | |
5a6c967e | 62 | ex_putchar(tp > dol ? ((UPPERCASE || HZ) ? '^' : '~') : '@'); |
98fb7faa MH |
63 | if (state == HARDOPEN) |
64 | sethard(); | |
65 | vclreol(); | |
66 | } | |
67 | ||
68 | /* | |
69 | * Clear to the end of the current physical line | |
70 | */ | |
71 | vclreol() | |
72 | { | |
73 | register int i, j; | |
74 | register char *tp; | |
75 | ||
76 | if (destcol == WCOLS) | |
77 | return; | |
78 | destline += destcol / WCOLS; | |
79 | destcol %= WCOLS; | |
80 | if (destline < 0 || destline > WECHO) | |
81 | error("Internal error: vclreol"); | |
82 | i = WCOLS - destcol; | |
83 | tp = vtube[destline] + destcol; | |
84 | if (CE) { | |
85 | if (IN && *tp || !ateopr()) { | |
86 | vcsync(); | |
87 | vputp(CE, 1); | |
88 | } | |
89 | vclrbyte(tp, i); | |
90 | return; | |
91 | } | |
92 | if (*tp == 0) | |
93 | return; | |
94 | while (i > 0 && (j = *tp & (QUOTE|TRIM))) { | |
95 | if (j != ' ' && (j & QUOTE) == 0) { | |
96 | destcol = WCOLS - i; | |
97 | vputchar(' '); | |
98 | } | |
99 | --i, *tp++ = 0; | |
100 | } | |
101 | } | |
102 | ||
103 | /* | |
104 | * Clear the echo line. | |
105 | * If didphys then its been cleared physically (as | |
106 | * a side effect of a clear to end of display, e.g.) | |
107 | * so just do it logically. | |
108 | * If work here is being held off, just remember, in | |
109 | * heldech, if work needs to be done, don't do anything. | |
110 | */ | |
111 | vclrech(didphys) | |
112 | bool didphys; | |
113 | { | |
114 | ||
5a6c967e | 115 | if (Peek_key == ATTN) |
98fb7faa MH |
116 | return; |
117 | if (hold & HOLDECH) { | |
118 | heldech = !didphys; | |
119 | return; | |
120 | } | |
121 | if (!didphys && (CD || CE)) { | |
122 | splitw++; | |
123 | /* | |
124 | * If display is retained below, then MUST use CD or CE | |
125 | * since we don't really know whats out there. | |
126 | * Vigoto might decide (incorrectly) to do nothing. | |
127 | */ | |
d266c416 MH |
128 | if (DB) { |
129 | vgoto(WECHO, 0); | |
130 | vputp(CD ? CD : CE, 1); | |
131 | } else { | |
132 | if (XT) { | |
133 | /* | |
134 | * This code basically handles the t1061 | |
135 | * where positioning at (0, 0) won't work | |
136 | * because the terminal won't let you put | |
137 | * the cursor on it's magic cookie. | |
138 | * | |
139 | * Should probably be XS above, or even a | |
140 | * new X? glitch, but right now t1061 is the | |
141 | * only terminal with XT. | |
142 | */ | |
143 | vgoto(WECHO, 0); | |
144 | vputp(DL, 1); | |
145 | } else { | |
146 | vigoto(WECHO, 0); | |
147 | vclreol(); | |
148 | } | |
149 | } | |
98fb7faa MH |
150 | splitw = 0; |
151 | didphys = 1; | |
152 | } | |
153 | if (didphys) | |
154 | vclrbyte(vtube[WECHO], WCOLS); | |
155 | heldech = 0; | |
156 | } | |
157 | ||
158 | /* | |
159 | * Fix the echo area for use, setting | |
160 | * the state variable splitw so we wont rollup | |
161 | * when we move the cursor there. | |
162 | */ | |
163 | fixech() | |
164 | { | |
165 | ||
166 | splitw++; | |
167 | if (state != VISUAL && state != CRTOPEN) { | |
168 | vclean(); | |
169 | vcnt = 0; | |
170 | } | |
171 | vgoto(WECHO, 0); flusho(); | |
172 | } | |
173 | ||
174 | /* | |
175 | * Put the cursor ``before'' cp. | |
176 | */ | |
177 | vcursbef(cp) | |
178 | register char *cp; | |
179 | { | |
180 | ||
181 | if (cp <= linebuf) | |
182 | vgotoCL(value(NUMBER) << 3); | |
183 | else | |
184 | vgotoCL(column(cp - 1) - 1); | |
185 | } | |
186 | ||
187 | /* | |
188 | * Put the cursor ``at'' cp. | |
189 | */ | |
190 | vcursat(cp) | |
191 | register char *cp; | |
192 | { | |
193 | ||
194 | if (cp <= linebuf && linebuf[0] == 0) | |
195 | vgotoCL(value(NUMBER) << 3); | |
196 | else | |
197 | vgotoCL(column(cp - 1)); | |
198 | } | |
199 | ||
200 | /* | |
201 | * Put the cursor ``after'' cp. | |
202 | */ | |
203 | vcursaft(cp) | |
204 | register char *cp; | |
205 | { | |
206 | ||
207 | vgotoCL(column(cp)); | |
208 | } | |
209 | ||
210 | /* | |
211 | * Fix the cursor to be positioned in the correct place | |
212 | * to accept a command. | |
213 | */ | |
214 | vfixcurs() | |
215 | { | |
216 | ||
217 | vsetcurs(cursor); | |
218 | } | |
219 | ||
220 | /* | |
221 | * Compute the column position implied by the cursor at ``nc'', | |
222 | * and move the cursor there. | |
223 | */ | |
224 | vsetcurs(nc) | |
225 | register char *nc; | |
226 | { | |
227 | register int col; | |
228 | ||
229 | col = column(nc); | |
230 | if (linebuf[0]) | |
231 | col--; | |
232 | vgotoCL(col); | |
233 | cursor = nc; | |
234 | } | |
235 | ||
236 | /* | |
237 | * Move the cursor invisibly, i.e. only remember to do it. | |
238 | */ | |
239 | vigoto(y, x) | |
240 | int y, x; | |
241 | { | |
242 | ||
243 | destline = y; | |
244 | destcol = x; | |
245 | } | |
246 | ||
247 | /* | |
248 | * Move the cursor to the position implied by any previous | |
249 | * vigoto (or low level hacking with destcol/destline as in readecho). | |
250 | */ | |
251 | vcsync() | |
252 | { | |
253 | ||
254 | vgoto(destline, destcol); | |
255 | } | |
256 | ||
257 | /* | |
258 | * Goto column x of the current line. | |
259 | */ | |
260 | vgotoCL(x) | |
261 | register int x; | |
262 | { | |
263 | ||
264 | if (splitw) | |
265 | vgoto(WECHO, x); | |
266 | else | |
267 | vgoto(LINE(vcline), x); | |
268 | } | |
269 | ||
270 | /* | |
271 | * Invisible goto column x of current line. | |
272 | */ | |
273 | vigotoCL(x) | |
274 | register int x; | |
275 | { | |
276 | ||
277 | if (splitw) | |
278 | vigoto(WECHO, x); | |
279 | else | |
280 | vigoto(LINE(vcline), x); | |
281 | } | |
282 | ||
283 | /* | |
284 | * Move cursor to line y, column x, handling wraparound and scrolling. | |
285 | */ | |
286 | vgoto(y, x) | |
287 | register int y, x; | |
288 | { | |
289 | register char *tp; | |
290 | register int c; | |
291 | ||
292 | /* | |
293 | * Fold the possibly too large value of x. | |
294 | */ | |
295 | if (x >= WCOLS) { | |
296 | y += x / WCOLS; | |
297 | x %= WCOLS; | |
298 | } | |
299 | if (y < 0) | |
300 | error("Internal error: vgoto"); | |
301 | if (outcol >= WCOLS) { | |
302 | if (AM) { | |
303 | outline += outcol / WCOLS; | |
304 | outcol %= WCOLS; | |
305 | } else | |
306 | outcol = WCOLS - 1; | |
307 | } | |
308 | ||
309 | /* | |
310 | * In a hardcopy or glass crt open, print the stuff | |
311 | * implied by a motion, or backspace. | |
312 | */ | |
313 | if (state == HARDOPEN || state == ONEOPEN) { | |
314 | if (y != outline) | |
315 | error("Line too long for open"); | |
316 | if (x + 1 < outcol - x || (outcol > x && !BS)) | |
317 | destcol = 0, fgoto(); | |
318 | tp = vtube[WBOT] + outcol; | |
319 | while (outcol != x) | |
320 | if (outcol < x) { | |
321 | if (*tp == 0) | |
322 | *tp = ' '; | |
323 | c = *tp++ & TRIM; | |
324 | vputc(c && (!OS || EO) ? c : ' '), outcol++; | |
325 | } else { | |
326 | if (BC) | |
327 | vputp(BC, 0); | |
328 | else | |
329 | vputc('\b'); | |
330 | outcol--; | |
331 | } | |
332 | destcol = outcol = x; | |
333 | destline = outline; | |
334 | return; | |
335 | } | |
336 | ||
337 | /* | |
338 | * If the destination position implies a scroll, do it. | |
339 | */ | |
340 | destline = y; | |
341 | if (destline > WBOT && (!splitw || destline > WECHO)) { | |
342 | endim(); | |
343 | vrollup(destline); | |
344 | } | |
345 | ||
346 | /* | |
347 | * If there really is a motion involved, do it. | |
348 | * The check here is an optimization based on profiling. | |
349 | */ | |
350 | destcol = x; | |
351 | if ((destline - outline) * WCOLS != destcol - outcol) { | |
352 | if (!MI) | |
353 | endim(); | |
354 | fgoto(); | |
355 | } | |
356 | } | |
357 | ||
358 | /* | |
359 | * This is the hardest code in the editor, and deals with insert modes | |
360 | * on different kinds of intelligent terminals. The complexity is due | |
361 | * to the cross product of three factors: | |
362 | * | |
363 | * 1. Lines may display as more than one segment on the screen. | |
364 | * 2. There are 2 kinds of intelligent terminal insert modes. | |
365 | * 3. Tabs squash when you insert characters in front of them, | |
366 | * in a way in which current intelligent terminals don't handle. | |
367 | * | |
368 | * The two kinds of terminals are typified by the DM2500 or HP2645 for | |
369 | * one and the CONCEPT-100 or the FOX for the other. | |
370 | * | |
371 | * The first (HP2645) kind has an insert mode where the characters | |
372 | * fall off the end of the line and the screen is shifted rigidly | |
373 | * no matter how the display came about. | |
374 | * | |
375 | * The second (CONCEPT-100) kind comes from terminals which are designed | |
376 | * for forms editing and which distinguish between blanks and ``spaces'' | |
377 | * on the screen, spaces being like blank, but never having had | |
378 | * and data typed into that screen position (since, e.g. a clear operation | |
379 | * like clear screen). On these terminals, when you insert a character, | |
380 | * the characters from where you are to the end of the screen shift | |
381 | * over till a ``space'' is found, and the null character there gets | |
382 | * eaten up. | |
383 | * | |
384 | * | |
385 | * The code here considers the line as consisting of several parts | |
386 | * the first part is the ``doomed'' part, i.e. a part of the line | |
387 | * which is being typed over. Next comes some text up to the first | |
388 | * following tab. The tab is the next segment of the line, and finally | |
389 | * text after the tab. | |
390 | * | |
391 | * We have to consider each of these segments and the effect of the | |
392 | * insertion of a character on them. On terminals like HP2645's we | |
393 | * must simulate a multi-line insert mode using the primitive one | |
394 | * line insert mode. If we are inserting in front of a tab, we have | |
395 | * to either delete characters from the tab or insert white space | |
396 | * (when the tab reaches a new spot where it gets larger) before we | |
397 | * insert the new character. | |
398 | * | |
399 | * On a terminal like a CONCEPT our strategy is to make all | |
400 | * blanks be displayed, while trying to keep the screen having ``spaces'' | |
401 | * for portions of tabs. In this way the terminal hardward does some | |
402 | * of the hacking for compression of tabs, although this tends to | |
403 | * disappear as you work on the line and spaces change into blanks. | |
404 | * | |
405 | * There are a number of boundary conditions (like typing just before | |
406 | * the first following tab) where we can avoid a lot of work. Most | |
407 | * of them have to be dealt with explicitly because performance is | |
408 | * much, much worse if we don't. | |
409 | * | |
410 | * A final thing which is hacked here is two flavors of insert mode. | |
411 | * Datamedia's do this by an insert mode which you enter and leave | |
412 | * and by having normal motion character operate differently in this | |
413 | * mode, notably by having a newline insert a line on the screen in | |
414 | * this mode. This generally means it is unsafe to move around | |
415 | * the screen ignoring the fact that we are in this mode. | |
416 | * This is possible on some terminals, and wins big (e.g. HP), so | |
417 | * we encode this as a ``can move in insert capability'' mi, | |
418 | * and terminals which have it can do insert mode with much less | |
419 | * work when tabs are present following the cursor on the current line. | |
420 | */ | |
421 | ||
422 | /* | |
423 | * Routine to expand a tab, calling the normal Outchar routine | |
424 | * to put out each implied character. Note that we call outchar | |
425 | * with a QUOTE. We use QUOTE internally to represent a position | |
426 | * which is part of the expansion of a tab. | |
427 | */ | |
428 | vgotab() | |
429 | { | |
d266c416 | 430 | register int i = tabcol(destcol, value(TABSTOP)) - destcol; |
98fb7faa MH |
431 | |
432 | do | |
433 | (*Outchar)(QUOTE); | |
d266c416 | 434 | while (--i); |
98fb7faa MH |
435 | } |
436 | ||
437 | /* | |
438 | * Variables for insert mode. | |
439 | */ | |
440 | int linend; /* The column position of end of line */ | |
441 | int tabstart; /* Column of start of first following tab */ | |
442 | int tabend; /* Column of end of following tabs */ | |
443 | int tabsize; /* Size of the following tabs */ | |
444 | int tabslack; /* Number of ``spaces'' in following tabs */ | |
445 | int inssiz; /* Number of characters to be inserted */ | |
446 | int inscol; /* Column where insertion is taking place */ | |
447 | int shft; /* Amount tab expansion shifted rest of line */ | |
448 | int slakused; /* This much of tabslack will be used up */ | |
449 | ||
450 | /* | |
451 | * This routine MUST be called before insert mode is run, | |
452 | * and brings all segments of the current line to the top | |
453 | * of the screen image buffer so it is easier for us to | |
454 | * maniuplate them. | |
455 | */ | |
456 | vprepins() | |
457 | { | |
458 | register int i; | |
459 | register char *cp = vtube0; | |
460 | ||
461 | for (i = 0; i < DEPTH(vcline); i++) { | |
462 | vmaktop(LINE(vcline) + i, cp); | |
463 | cp += WCOLS; | |
464 | } | |
465 | } | |
466 | ||
467 | vmaktop(p, cp) | |
468 | register int p; | |
469 | char *cp; | |
470 | { | |
471 | register int i; | |
472 | char temp[TUBECOLS]; | |
473 | ||
d266c416 | 474 | if (p < 0 || vtube[p] == cp) |
98fb7faa | 475 | return; |
5a6c967e | 476 | for (i = ex_ZERO; i <= WECHO; i++) |
98fb7faa MH |
477 | if (vtube[i] == cp) { |
478 | copy(temp, vtube[i], WCOLS); | |
479 | copy(vtube[i], vtube[p], WCOLS); | |
480 | copy(vtube[p], temp, WCOLS); | |
481 | vtube[i] = vtube[p]; | |
482 | vtube[p] = cp; | |
483 | return; | |
484 | } | |
485 | error("Line too long"); | |
486 | } | |
487 | ||
488 | /* | |
489 | * Insert character c at current cursor position. | |
490 | * Multi-character inserts occur only as a result | |
491 | * of expansion of tabs (i.e. inssize == 1 except | |
492 | * for tabs) and code assumes this in several place | |
493 | * to make life simpler. | |
494 | */ | |
495 | vinschar(c) | |
299f2784 | 496 | int c; /* mjm: char --> int */ |
98fb7faa MH |
497 | { |
498 | register int i; | |
499 | register char *tp; | |
500 | ||
501 | if ((!IM || !EI) && ((hold & HOLDQIK) || !value(REDRAW) || value(SLOWOPEN))) { | |
502 | /* | |
503 | * Don't want to try to use terminal | |
504 | * insert mode, or to try to fake it. | |
505 | * Just put the character out; the screen | |
506 | * will probably be wrong but we will fix it later. | |
507 | */ | |
508 | if (c == '\t') { | |
509 | vgotab(); | |
510 | return; | |
511 | } | |
512 | vputchar(c); | |
513 | if (DEPTH(vcline) * WCOLS + !value(REDRAW) > | |
514 | (destline - LINE(vcline)) * WCOLS + destcol) | |
515 | return; | |
516 | /* | |
517 | * The next line is about to be clobbered | |
518 | * make space for another segment of this line | |
519 | * (on an intelligent terminal) or just remember | |
520 | * that next line was clobbered (on a dumb one | |
521 | * if we don't care to redraw the tail. | |
522 | */ | |
523 | if (AL) { | |
524 | vnpins(0); | |
525 | } else { | |
526 | c = LINE(vcline) + DEPTH(vcline); | |
527 | if (c < LINE(vcline + 1) || c > WBOT) | |
528 | return; | |
529 | i = destcol; | |
530 | vinslin(c, 1, vcline); | |
531 | DEPTH(vcline)++; | |
532 | vigoto(c, i); | |
533 | vprepins(); | |
534 | } | |
535 | return; | |
536 | } | |
537 | /* | |
538 | * Compute the number of positions in the line image of the | |
539 | * current line. This is done from the physical image | |
540 | * since that is faster. Note that we have no memory | |
541 | * from insertion to insertion so that routines which use | |
542 | * us don't have to worry about moving the cursor around. | |
543 | */ | |
544 | if (*vtube0 == 0) | |
545 | linend = 0; | |
546 | else { | |
547 | /* | |
548 | * Search backwards for a non-null character | |
549 | * from the end of the displayed line. | |
550 | */ | |
551 | i = WCOLS * DEPTH(vcline); | |
552 | if (i == 0) | |
553 | i = WCOLS; | |
554 | tp = vtube0 + i; | |
555 | while (*--tp == 0) | |
556 | if (--i == 0) | |
557 | break; | |
558 | linend = i; | |
559 | } | |
560 | ||
561 | /* | |
562 | * We insert at a position based on the physical location | |
563 | * of the output cursor. | |
564 | */ | |
565 | inscol = destcol + (destline - LINE(vcline)) * WCOLS; | |
566 | if (c == '\t') { | |
567 | /* | |
568 | * Characters inserted from a tab must be | |
569 | * remembered as being part of a tab, but we can't | |
570 | * use QUOTE here since we really need to print blanks. | |
571 | * QUOTE|' ' is the representation of this. | |
572 | */ | |
d266c416 | 573 | inssiz = tabcol(inscol, value(TABSTOP)) - inscol; |
98fb7faa MH |
574 | c = ' ' | QUOTE; |
575 | } else | |
576 | inssiz = 1; | |
577 | ||
578 | /* | |
579 | * If the text to be inserted is less than the number | |
580 | * of doomed positions, then we don't need insert mode, | |
581 | * rather we can just typeover. | |
582 | */ | |
583 | if (inssiz <= doomed) { | |
584 | endim(); | |
585 | if (inscol != linend) | |
586 | doomed -= inssiz; | |
587 | do | |
588 | vputchar(c); | |
589 | while (--inssiz); | |
590 | return; | |
591 | } | |
592 | ||
593 | /* | |
594 | * Have to really do some insertion, thus | |
595 | * stake out the bounds of the first following | |
596 | * group of tabs, computing starting position, | |
597 | * ending position, and the number of ``spaces'' therein | |
598 | * so we can tell how much it will squish. | |
599 | */ | |
600 | tp = vtube0 + inscol; | |
601 | for (i = inscol; i < linend; i++) | |
602 | if (*tp++ & QUOTE) { | |
603 | --tp; | |
604 | break; | |
605 | } | |
606 | tabstart = tabend = i; | |
607 | tabslack = 0; | |
608 | while (tabend < linend) { | |
609 | i = *tp++; | |
610 | if ((i & QUOTE) == 0) | |
611 | break; | |
612 | if ((i & TRIM) == 0) | |
613 | tabslack++; | |
614 | tabsize++; | |
615 | tabend++; | |
616 | } | |
617 | tabsize = tabend - tabstart; | |
618 | ||
619 | /* | |
620 | * For HP's and DM's, e.g. tabslack has no meaning. | |
621 | */ | |
622 | if (!IN) | |
623 | tabslack = 0; | |
624 | #ifdef IDEBUG | |
625 | if (trace) { | |
626 | fprintf(trace, "inscol %d, inssiz %d, tabstart %d, ", | |
627 | inscol, inssiz, tabstart); | |
628 | fprintf(trace, "tabend %d, tabslack %d, linend %d\n", | |
629 | tabend, tabslack, linend); | |
630 | } | |
631 | #endif | |
632 | ||
633 | /* | |
634 | * The real work begins. | |
635 | */ | |
636 | slakused = 0; | |
637 | shft = 0; | |
638 | if (tabsize) { | |
639 | /* | |
640 | * There are tabs on this line. | |
641 | * If they need to expand, then the rest of the line | |
642 | * will have to be shifted over. In this case, | |
643 | * we will need to make sure there are no ``spaces'' | |
644 | * in the rest of the line (on e.g. CONCEPT-100) | |
645 | * and then grab another segment on the screen if this | |
646 | * line is now deeper. We then do the shift | |
647 | * implied by the insertion. | |
648 | */ | |
d266c416 | 649 | if (inssiz >= doomed + tabcol(tabstart, value(TABSTOP)) - tabstart) { |
98fb7faa MH |
650 | if (IN) |
651 | vrigid(); | |
652 | vneedpos(value(TABSTOP)); | |
653 | vishft(); | |
654 | } | |
655 | } else if (inssiz > doomed) | |
656 | /* | |
657 | * No tabs, but line may still get deeper. | |
658 | */ | |
659 | vneedpos(inssiz - doomed); | |
660 | /* | |
661 | * Now put in the inserted characters. | |
662 | */ | |
663 | viin(c); | |
664 | ||
665 | /* | |
666 | * Now put the cursor in its final resting place. | |
667 | */ | |
668 | destline = LINE(vcline); | |
669 | destcol = inscol + inssiz; | |
670 | vcsync(); | |
671 | } | |
672 | ||
673 | /* | |
674 | * Rigidify the rest of the line after the first | |
675 | * group of following tabs, typing blanks over ``spaces''. | |
676 | */ | |
677 | vrigid() | |
678 | { | |
679 | register int col; | |
680 | register char *tp = vtube0 + tabend; | |
681 | ||
682 | for (col = tabend; col < linend; col++) | |
683 | if ((*tp++ & TRIM) == 0) { | |
684 | endim(); | |
685 | vgotoCL(col); | |
686 | vputchar(' ' | QUOTE); | |
687 | } | |
688 | } | |
689 | ||
690 | /* | |
691 | * We need cnt more positions on this line. | |
692 | * Open up new space on the screen (this may in fact be a | |
693 | * screen rollup). | |
694 | * | |
695 | * On a dumb terminal we may infact redisplay the rest of the | |
696 | * screen here brute force to keep it pretty. | |
697 | */ | |
698 | vneedpos(cnt) | |
699 | int cnt; | |
700 | { | |
701 | register int d = DEPTH(vcline); | |
702 | register int rmdr = d * WCOLS - linend; | |
703 | ||
704 | if (cnt <= rmdr - IN) | |
705 | return; | |
706 | endim(); | |
707 | vnpins(1); | |
708 | } | |
709 | ||
710 | vnpins(dosync) | |
711 | int dosync; | |
712 | { | |
713 | register int d = DEPTH(vcline); | |
714 | register int e; | |
715 | ||
716 | e = LINE(vcline) + DEPTH(vcline); | |
717 | if (e < LINE(vcline + 1)) { | |
718 | vigoto(e, 0); | |
719 | vclreol(); | |
720 | return; | |
721 | } | |
722 | DEPTH(vcline)++; | |
723 | if (e < WECHO) { | |
724 | e = vglitchup(vcline, d); | |
725 | vigoto(e, 0); vclreol(); | |
726 | if (dosync) { | |
9cc49269 | 727 | int (*Ooutchar)() = Outchar; |
98fb7faa MH |
728 | Outchar = vputchar; |
729 | vsync(e + 1); | |
9cc49269 | 730 | Outchar = Ooutchar; |
98fb7faa MH |
731 | } |
732 | } else { | |
733 | vup1(); | |
734 | vigoto(WBOT, 0); | |
735 | vclreol(); | |
736 | } | |
737 | vprepins(); | |
738 | } | |
739 | ||
740 | /* | |
741 | * Do the shift of the next tabstop implied by | |
742 | * insertion so it expands. | |
743 | */ | |
744 | vishft() | |
745 | { | |
746 | int tshft = 0; | |
747 | int j; | |
748 | register int i; | |
749 | register char *tp = vtube0; | |
750 | register char *up; | |
751 | short oldhold = hold; | |
752 | ||
753 | shft = value(TABSTOP); | |
754 | hold |= HOLDPUPD; | |
755 | if (!IM && !EI) { | |
756 | /* | |
757 | * Dumb terminals are easy, we just have | |
758 | * to retype the text. | |
759 | */ | |
760 | vigotoCL(tabend + shft); | |
761 | up = tp + tabend; | |
762 | for (i = tabend; i < linend; i++) | |
763 | vputchar(*up++); | |
764 | } else if (IN) { | |
765 | /* | |
766 | * CONCEPT-like terminals do most of the work for us, | |
767 | * we don't have to muck with simulation of multi-line | |
768 | * insert mode. Some of the shifting may come for free | |
769 | * also if the tabs don't have enough slack to take up | |
770 | * all the inserted characters. | |
771 | */ | |
772 | i = shft; | |
773 | slakused = inssiz - doomed; | |
774 | if (slakused > tabslack) { | |
775 | i -= slakused - tabslack; | |
776 | slakused -= tabslack; | |
777 | } | |
778 | if (i > 0 && tabend != linend) { | |
779 | tshft = i; | |
780 | vgotoCL(tabend); | |
781 | goim(); | |
782 | do | |
783 | vputchar(' ' | QUOTE); | |
784 | while (--i); | |
785 | } | |
786 | } else { | |
787 | /* | |
788 | * HP and Datamedia type terminals have to have multi-line | |
789 | * insert faked. Hack each segment after where we are | |
790 | * (going backwards to where we are.) We then can | |
791 | * hack the segment where the end of the first following | |
792 | * tab group is. | |
793 | */ | |
794 | for (j = DEPTH(vcline) - 1; j > (tabend + shft) / WCOLS; j--) { | |
795 | vgotoCL(j * WCOLS); | |
796 | goim(); | |
797 | up = tp + j * WCOLS - shft; | |
798 | i = shft; | |
887e3e0d MH |
799 | do { |
800 | if (*up) | |
801 | vputchar(*up++); | |
802 | else | |
803 | break; | |
804 | } while (--i); | |
98fb7faa MH |
805 | } |
806 | vigotoCL(tabstart); | |
807 | i = shft - (inssiz - doomed); | |
808 | if (i > 0) { | |
809 | tabslack = inssiz - doomed; | |
810 | vcsync(); | |
811 | goim(); | |
812 | do | |
813 | vputchar(' '); | |
814 | while (--i); | |
815 | } | |
816 | } | |
817 | /* | |
818 | * Now do the data moving in the internal screen | |
819 | * image which is common to all three cases. | |
820 | */ | |
821 | tp += linend; | |
822 | up = tp + shft; | |
823 | i = linend - tabend; | |
824 | if (i > 0) | |
825 | do | |
826 | *--up = *--tp; | |
827 | while (--i); | |
828 | if (IN && tshft) { | |
829 | i = tshft; | |
830 | do | |
831 | *--up = ' ' | QUOTE; | |
832 | while (--i); | |
833 | } | |
834 | hold = oldhold; | |
835 | } | |
836 | ||
837 | /* | |
838 | * Now do the insert of the characters (finally). | |
839 | */ | |
840 | viin(c) | |
299f2784 | 841 | int c; /* mjm: char --> int */ |
98fb7faa MH |
842 | { |
843 | register char *tp, *up; | |
844 | register int i, j; | |
845 | register bool noim = 0; | |
846 | int remdoom; | |
847 | short oldhold = hold; | |
848 | ||
849 | hold |= HOLDPUPD; | |
850 | if (tabsize && (IM && EI) && inssiz - doomed > tabslack) | |
851 | /* | |
852 | * There is a tab out there which will be affected | |
853 | * by the insertion since there aren't enough doomed | |
854 | * characters to take up all the insertion and we do | |
855 | * have insert mode capability. | |
856 | */ | |
857 | if (inscol + doomed == tabstart) { | |
858 | /* | |
859 | * The end of the doomed characters sits right at the | |
860 | * start of the tabs, then we don't need to use insert | |
861 | * mode; unless the tab has already been expanded | |
862 | * in which case we MUST use insert mode. | |
863 | */ | |
864 | slakused = 0; | |
865 | noim = !shft; | |
866 | } else { | |
867 | /* | |
868 | * The last really special case to handle is case | |
869 | * where the tab is just sitting there and doesn't | |
870 | * have enough slack to let the insertion take | |
871 | * place without shifting the rest of the line | |
872 | * over. In this case we have to go out and | |
873 | * delete some characters of the tab before we start | |
874 | * or the answer will be wrong, as the rest of the | |
875 | * line will have been shifted. This code means | |
876 | * that terminals with only insert chracter (no | |
877 | * delete character) won't work correctly. | |
878 | */ | |
879 | i = inssiz - doomed - tabslack - slakused; | |
880 | i %= value(TABSTOP); | |
881 | if (i > 0) { | |
882 | vgotoCL(tabstart); | |
883 | godm(); | |
884 | for (i = inssiz - doomed - tabslack; i > 0; i--) | |
885 | vputp(DC, DEPTH(vcline)); | |
886 | enddm(); | |
887 | } | |
888 | } | |
889 | ||
890 | /* | |
891 | * Now put out the characters of the actual insertion. | |
892 | */ | |
893 | vigotoCL(inscol); | |
894 | remdoom = doomed; | |
895 | for (i = inssiz; i > 0; i--) { | |
896 | if (remdoom > 0) { | |
897 | remdoom--; | |
898 | endim(); | |
899 | } else if (noim) | |
900 | endim(); | |
901 | else if (IM && EI) { | |
902 | vcsync(); | |
903 | goim(); | |
904 | } | |
905 | vputchar(c); | |
906 | } | |
907 | ||
908 | if (!IM || !EI) { | |
909 | /* | |
910 | * We are a dumb terminal; brute force update | |
911 | * the rest of the line; this is very much an n^^2 process, | |
912 | * and totally unreasonable at low speed. | |
913 | * | |
914 | * You asked for it, you get it. | |
915 | */ | |
916 | tp = vtube0 + inscol + doomed; | |
917 | for (i = inscol + doomed; i < tabstart; i++) | |
918 | vputchar(*tp++); | |
919 | hold = oldhold; | |
920 | vigotoCL(tabstart + inssiz - doomed); | |
921 | for (i = tabsize - (inssiz - doomed) + shft; i > 0; i--) | |
922 | vputchar(' ' | QUOTE); | |
923 | } else { | |
924 | if (!IN) { | |
925 | /* | |
926 | * On terminals without multi-line | |
927 | * insert in the hardware, we must go fix the segments | |
928 | * between the inserted text and the following | |
929 | * tabs, if they are on different lines. | |
930 | * | |
931 | * Aaargh. | |
932 | */ | |
933 | tp = vtube0; | |
934 | for (j = (inscol + inssiz - 1) / WCOLS + 1; | |
935 | j <= (tabstart + inssiz - doomed - 1) / WCOLS; j++) { | |
936 | vgotoCL(j * WCOLS); | |
937 | i = inssiz - doomed; | |
938 | up = tp + j * WCOLS - i; | |
939 | goim(); | |
940 | do | |
941 | vputchar(*up++); | |
942 | while (--i && *up); | |
943 | } | |
944 | } else { | |
945 | /* | |
946 | * On terminals with multi line inserts, | |
947 | * life is simpler, just reflect eating of | |
948 | * the slack. | |
949 | */ | |
950 | tp = vtube0 + tabend; | |
951 | for (i = tabsize - (inssiz - doomed); i >= 0; i--) { | |
952 | if ((*--tp & (QUOTE|TRIM)) == QUOTE) { | |
953 | --tabslack; | |
954 | if (tabslack >= slakused) | |
955 | continue; | |
956 | } | |
957 | *tp = ' ' | QUOTE; | |
958 | } | |
959 | } | |
960 | /* | |
961 | * Blank out the shifted positions to be tab positions. | |
962 | */ | |
963 | if (shft) { | |
964 | tp = vtube0 + tabend + shft; | |
965 | for (i = tabsize - (inssiz - doomed) + shft; i > 0; i--) | |
966 | if ((*--tp & QUOTE) == 0) | |
967 | *tp = ' ' | QUOTE; | |
968 | } | |
969 | } | |
970 | ||
971 | /* | |
972 | * Finally, complete the screen image update | |
973 | * to reflect the insertion. | |
974 | */ | |
975 | hold = oldhold; | |
976 | tp = vtube0 + tabstart; up = tp + inssiz - doomed; | |
977 | for (i = tabstart; i > inscol + doomed; i--) | |
978 | *--up = *--tp; | |
979 | for (i = inssiz; i > 0; i--) | |
980 | *--up = c; | |
981 | doomed = 0; | |
982 | } | |
983 | ||
984 | /* | |
985 | * Go into ``delete mode''. If the | |
986 | * sequence which goes into delete mode | |
987 | * is the same as that which goes into insert | |
988 | * mode, then we are in delete mode already. | |
989 | */ | |
990 | godm() | |
991 | { | |
992 | ||
993 | if (insmode) { | |
994 | if (eq(DM, IM)) | |
995 | return; | |
996 | endim(); | |
997 | } | |
998 | vputp(DM, 0); | |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * If we are coming out of delete mode, but | |
1003 | * delete and insert mode end with the same sequence, | |
1004 | * it wins to pretend we are now in insert mode, | |
1005 | * since we will likely want to be there again soon | |
1006 | * if we just moved over to delete space from part of | |
1007 | * a tab (above). | |
1008 | */ | |
1009 | enddm() | |
1010 | { | |
1011 | ||
1012 | if (eq(DM, IM)) { | |
1013 | insmode = 1; | |
1014 | return; | |
1015 | } | |
1016 | vputp(ED, 0); | |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * In and out of insert mode. | |
1021 | * Note that the code here demands that there be | |
1022 | * a string for insert mode (the null string) even | |
1023 | * if the terminal does all insertions a single character | |
1024 | * at a time, since it branches based on whether IM is null. | |
1025 | */ | |
1026 | goim() | |
1027 | { | |
1028 | ||
1029 | if (!insmode) | |
1030 | vputp(IM, 0); | |
1031 | insmode = 1; | |
1032 | } | |
1033 | ||
1034 | endim() | |
1035 | { | |
1036 | ||
1037 | if (insmode) { | |
1038 | vputp(EI, 0); | |
1039 | insmode = 0; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | * Put the character c on the screen at the current cursor position. | |
1045 | * This routine handles wraparound and scrolling and understands not | |
1046 | * to roll when splitw is set, i.e. we are working in the echo area. | |
1047 | * There is a bunch of hacking here dealing with the difference between | |
1048 | * QUOTE, QUOTE|' ', and ' ' for CONCEPT-100 like terminals, and also | |
1049 | * code to deal with terminals which overstrike, including CRT's where | |
1050 | * you can erase overstrikes with some work. CRT's which do underlining | |
1051 | * implicitly which has to be erased (like CONCEPTS) are also handled. | |
1052 | */ | |
1053 | vputchar(c) | |
1054 | register int c; | |
1055 | { | |
1056 | register char *tp; | |
1057 | register int d; | |
1058 | ||
1059 | c &= (QUOTE|TRIM); | |
1060 | #ifdef TRACE | |
1061 | if (trace) | |
1062 | tracec(c); | |
1063 | #endif | |
887e3e0d | 1064 | /* Fix problem of >79 chars on echo line. */ |
98fb7faa | 1065 | if (destcol >= WCOLS-1 && splitw && destline == WECHO) |
887e3e0d | 1066 | pofix(); |
98fb7faa MH |
1067 | if (destcol >= WCOLS) { |
1068 | destline += destcol / WCOLS; | |
1069 | destcol %= WCOLS; | |
1070 | } | |
1071 | if (destline > WBOT && (!splitw || destline > WECHO)) | |
1072 | vrollup(destline); | |
1073 | tp = vtube[destline] + destcol; | |
1074 | switch (c) { | |
1075 | ||
1076 | case '\t': | |
1077 | vgotab(); | |
1078 | return; | |
1079 | ||
1080 | case ' ': | |
1081 | /* | |
1082 | * We can get away without printing a space in a number | |
1083 | * of cases, but not always. We get away with doing nothing | |
1084 | * if we are not in insert mode, and not on a CONCEPT-100 | |
1085 | * like terminal, and either not in hardcopy open or in hardcopy | |
1086 | * open on a terminal with no overstriking, provided, | |
1087 | * in all cases, that nothing has ever been displayed | |
1088 | * at this position. Ugh. | |
1089 | */ | |
1090 | if (!insmode && !IN && (state != HARDOPEN || OS) && (*tp&TRIM) == 0) { | |
1091 | *tp = ' '; | |
1092 | destcol++; | |
1093 | return; | |
1094 | } | |
1095 | goto def; | |
1096 | ||
1097 | case QUOTE: | |
1098 | if (insmode) { | |
1099 | /* | |
1100 | * When in insert mode, tabs have to expand | |
1101 | * to real, printed blanks. | |
1102 | */ | |
1103 | c = ' ' | QUOTE; | |
1104 | goto def; | |
1105 | } | |
1106 | if (*tp == 0) { | |
1107 | /* | |
1108 | * A ``space''. | |
1109 | */ | |
1110 | if ((hold & HOLDPUPD) == 0) | |
1111 | *tp = QUOTE; | |
1112 | destcol++; | |
1113 | return; | |
1114 | } | |
1115 | /* | |
1116 | * A ``space'' ontop of a part of a tab. | |
1117 | */ | |
1118 | if (*tp & QUOTE) { | |
1119 | destcol++; | |
1120 | return; | |
1121 | } | |
1122 | c = ' ' | QUOTE; | |
1123 | /* fall into ... */ | |
1124 | ||
1125 | def: | |
1126 | default: | |
1127 | d = *tp & TRIM; | |
1128 | /* | |
1129 | * Now get away with doing nothing if the characters | |
1130 | * are the same, provided we are not in insert mode | |
1131 | * and if we are in hardopen, that the terminal has overstrike. | |
1132 | */ | |
1133 | if (d == (c & TRIM) && !insmode && (state != HARDOPEN || OS)) { | |
1134 | if ((hold & HOLDPUPD) == 0) | |
1135 | *tp = c; | |
1136 | destcol++; | |
1137 | return; | |
1138 | } | |
1139 | /* | |
1140 | * Backwards looking optimization. | |
1141 | * The low level cursor motion routines will use | |
1142 | * a cursor motion right sequence to step 1 character | |
1143 | * right. On, e.g., a DM3025A this is 2 characters | |
1144 | * and printing is noticeably slower at 300 baud. | |
1145 | * Since the low level routines are not allowed to use | |
1146 | * spaces for positioning, we discover the common | |
1147 | * case of a single space here and force a space | |
1148 | * to be printed. | |
1149 | */ | |
1150 | if (destcol == outcol + 1 && tp[-1] == ' ' && outline == destline) { | |
1151 | vputc(' '); | |
1152 | outcol++; | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * This is an inline expansion a call to vcsync() dictated | |
1157 | * by high frequency in a profile. | |
1158 | */ | |
1159 | if (outcol != destcol || outline != destline) | |
1160 | vgoto(destline, destcol); | |
1161 | ||
1162 | /* | |
1163 | * Deal with terminals which have overstrike. | |
1164 | * We handle erasing general overstrikes, erasing | |
1165 | * underlines on terminals (such as CONCEPTS) which | |
1166 | * do underlining correctly automatically (e.g. on nroff | |
1167 | * output), and remembering, in hardcopy mode, | |
1168 | * that we have overstruct something. | |
1169 | */ | |
1170 | if (!insmode && d && d != ' ' && d != (c & TRIM)) { | |
1171 | if (EO && (OS || UL && (c == '_' || d == '_'))) { | |
1172 | vputc(' '); | |
1173 | outcol++, destcol++; | |
1174 | back1(); | |
1175 | } else | |
1176 | rubble = 1; | |
1177 | } | |
1178 | ||
1179 | /* | |
1180 | * Unless we are just bashing characters around for | |
1181 | * inner working of insert mode, update the display. | |
1182 | */ | |
1183 | if ((hold & HOLDPUPD) == 0) | |
1184 | *tp = c; | |
1185 | ||
1186 | /* | |
1187 | * In insert mode, put out the IC sequence, padded | |
1188 | * based on the depth of the current line. | |
1189 | * A terminal which had no real insert mode, rather | |
1190 | * opening a character position at a time could do this. | |
1191 | * Actually should use depth to end of current line | |
1192 | * but this rarely matters. | |
1193 | */ | |
1194 | if (insmode) | |
1195 | vputp(IC, DEPTH(vcline)); | |
1196 | vputc(c & TRIM); | |
1197 | ||
1198 | /* | |
1199 | * In insert mode, IP is a post insert pad. | |
1200 | */ | |
1201 | if (insmode) | |
1202 | vputp(IP, DEPTH(vcline)); | |
1203 | destcol++, outcol++; | |
1204 | ||
1205 | /* | |
1206 | * CONCEPT braindamage in early models: after a wraparound | |
1207 | * the next newline is eaten. It's hungry so we just | |
1208 | * feed it now rather than worrying about it. | |
299f2784 MH |
1209 | * Fixed to use return linefeed to work right |
1210 | * on vt100/tab132 as well as concept. | |
98fb7faa | 1211 | */ |
299f2784 | 1212 | if (XN && outcol % WCOLS == 0) { |
455e66d9 MH |
1213 | vputc('\r'); |
1214 | vputc('\n'); | |
299f2784 | 1215 | } |
98fb7faa MH |
1216 | } |
1217 | } | |
1218 | ||
1219 | /* | |
1220 | * Delete display positions stcol through endcol. | |
1221 | * Amount of use of special terminal features here is limited. | |
1222 | */ | |
1223 | physdc(stcol, endcol) | |
1224 | int stcol, endcol; | |
1225 | { | |
1226 | register char *tp, *up; | |
1227 | char *tpe; | |
1228 | register int i; | |
1229 | register int nc = endcol - stcol; | |
1230 | ||
1231 | #ifdef IDEBUG | |
1232 | if (trace) | |
1233 | tfixnl(), fprintf(trace, "physdc(%d, %d)\n", stcol, endcol); | |
1234 | #endif | |
1235 | if (!DC || nc <= 0) | |
1236 | return; | |
1237 | if (IN) { | |
1238 | /* | |
1239 | * CONCEPT-100 like terminal. | |
1240 | * If there are any ``spaces'' in the material to be | |
1241 | * deleted, then this is too hard, just retype. | |
1242 | */ | |
1243 | vprepins(); | |
1244 | up = vtube0 + stcol; | |
1245 | i = nc; | |
1246 | do | |
1247 | if ((*up++ & (QUOTE|TRIM)) == QUOTE) | |
1248 | return; | |
1249 | while (--i); | |
1250 | i = 2 * nc; | |
1251 | do | |
1252 | if (*up == 0 || (*up++ & QUOTE) == QUOTE) | |
1253 | return; | |
1254 | while (--i); | |
1255 | vgotoCL(stcol); | |
1256 | } else { | |
1257 | /* | |
1258 | * HP like delete mode. | |
1259 | * Compute how much text we are moving over by deleting. | |
1260 | * If it appears to be faster to just retype | |
1261 | * the line, do nothing and that will be done later. | |
1262 | * We are assuming 2 output characters per deleted | |
1263 | * characters and that clear to end of line is available. | |
1264 | */ | |
1265 | i = stcol / WCOLS; | |
1266 | if (i != endcol / WCOLS) | |
1267 | return; | |
1268 | i += LINE(vcline); | |
1269 | stcol %= WCOLS; | |
1270 | endcol %= WCOLS; | |
1271 | up = vtube[i]; tp = up + endcol; tpe = up + WCOLS; | |
1272 | while (tp < tpe && *tp) | |
1273 | tp++; | |
1274 | if (tp - (up + stcol) < 2 * nc) | |
1275 | return; | |
1276 | vgoto(i, stcol); | |
1277 | } | |
1278 | ||
1279 | /* | |
1280 | * Go into delete mode and do the actual delete. | |
1281 | * Padding is on DC itself. | |
1282 | */ | |
1283 | godm(); | |
1284 | for (i = nc; i > 0; i--) | |
1285 | vputp(DC, DEPTH(vcline)); | |
1286 | vputp(ED, 0); | |
1287 | ||
1288 | /* | |
1289 | * Straighten up. | |
1290 | * With CONCEPT like terminals, characters are pulled left | |
1291 | * from first following null. HP like terminals shift rest of | |
1292 | * this (single physical) line rigidly. | |
1293 | */ | |
1294 | if (IN) { | |
1295 | up = vtube0 + stcol; | |
1296 | tp = vtube0 + endcol; | |
1297 | while (i = *tp++) { | |
1298 | if ((i & (QUOTE|TRIM)) == QUOTE) | |
1299 | break; | |
1300 | *up++ = i; | |
1301 | } | |
1302 | do | |
1303 | *up++ = i; | |
1304 | while (--nc); | |
1305 | } else { | |
1306 | copy(up + stcol, up + endcol, WCOLS - endcol); | |
1307 | vclrbyte(tpe - nc, nc); | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | #ifdef TRACE | |
1312 | tfixnl() | |
1313 | { | |
1314 | ||
1315 | if (trubble || techoin) | |
1316 | fprintf(trace, "\n"); | |
1317 | trubble = 0, techoin = 0; | |
1318 | } | |
1319 | ||
1320 | tvliny() | |
1321 | { | |
1322 | register int i; | |
1323 | ||
1324 | if (!trace) | |
1325 | return; | |
1326 | tfixnl(); | |
1327 | fprintf(trace, "vcnt = %d, vcline = %d, vliny = ", vcnt, vcline); | |
1328 | for (i = 0; i <= vcnt; i++) { | |
1329 | fprintf(trace, "%d", LINE(i)); | |
1330 | if (FLAGS(i) & VDIRT) | |
1331 | fprintf(trace, "*"); | |
1332 | if (DEPTH(i) != 1) | |
1333 | fprintf(trace, "<%d>", DEPTH(i)); | |
1334 | if (i < vcnt) | |
1335 | fprintf(trace, " "); | |
1336 | } | |
1337 | fprintf(trace, "\n"); | |
1338 | } | |
1339 | ||
1340 | tracec(c) | |
299f2784 | 1341 | int c; /* mjm: char --> int */ |
98fb7faa MH |
1342 | { |
1343 | ||
1344 | if (!techoin) | |
1345 | trubble = 1; | |
1346 | if (c == ESCAPE) | |
1347 | fprintf(trace, "$"); | |
299f2784 MH |
1348 | else if (c & QUOTE) /* mjm: for 3B (no sign extension) */ |
1349 | fprintf(trace, "~%c", ctlof(c&TRIM)); | |
98fb7faa MH |
1350 | else if (c < ' ' || c == DELETE) |
1351 | fprintf(trace, "^%c", ctlof(c)); | |
1352 | else | |
1353 | fprintf(trace, "%c", c); | |
1354 | } | |
1355 | #endif | |
1356 | ||
1357 | /* | |
1358 | * Put a character with possible tracing. | |
1359 | */ | |
1360 | vputch(c) | |
1361 | int c; | |
1362 | { | |
1363 | ||
1364 | #ifdef TRACE | |
1365 | if (trace) | |
1366 | tracec(c); | |
1367 | #endif | |
1368 | vputc(c); | |
1369 | } |