11825bd4 |
1 | #include "tweak.h" |
2 | |
6e182d98 |
3 | #include <stdio.h> |
4 | #include <stdlib.h> |
5 | #include <string.h> |
6 | #include <ctype.h> |
7 | |
6e182d98 |
8 | static void act_exit (void); |
9 | static void act_save (void); |
10 | static void act_exitsave (void); |
11 | static void act_top (void); |
12 | static void act_pgup (void); |
13 | static void act_up (void); |
14 | static void act_home (void); |
15 | static void act_left (void); |
16 | static void act_right (void); |
17 | static void act_end (void); |
18 | static void act_down (void); |
19 | static void act_pgdn (void); |
20 | static void act_bottom (void); |
21 | static void act_togins (void); |
22 | static void act_chmode (void); |
23 | extern void act_self_ins (void); /* this one must be external */ |
24 | static void act_delete (void); |
25 | static void act_delch (void); |
26 | static void act_mark (void); |
27 | static void act_cut (void); |
28 | static void act_copy (void); |
29 | static void act_paste (void); |
30 | static void act_susp (void); |
31 | static void act_goto (void); |
32 | static void act_togstat (void); |
33 | static void act_search (void); |
a63728c7 |
34 | static void act_search_backwards (void); |
6e182d98 |
35 | static void act_recentre (void); |
36 | static void act_width (void); |
37 | static void act_offset (void); |
38 | #ifdef TEST_BUFFER |
39 | static void act_diagnostics (void); |
40 | #endif |
41 | |
a63728c7 |
42 | static Search *last_search = NULL; |
43 | |
6e182d98 |
44 | keyact parse_action (char *name) { |
45 | char *names[] = { |
46 | "exit", "top-of-file", "page-up", "move-up", |
47 | "begin-line", "move-left", "move-right", "end-line", |
48 | "move-down", "page-down", "bottom-of-file", "toggle-insert", |
49 | "change-mode", "delete-left", "delete-right", "mark-place", |
50 | "cut", "copy", "paste", "suspend", "goto-position", |
a63728c7 |
51 | "toggle-status", "search", "search-back", "save-file", |
52 | "exit-and-save", "screen-recentre", "new-width", "new-offset" |
6e182d98 |
53 | #ifdef TEST_BUFFER |
54 | , "diagnostics" |
55 | #endif |
56 | }; |
57 | keyact actions[] = { |
58 | act_exit, act_top, act_pgup, act_up, act_home, act_left, |
59 | act_right, act_end, act_down, act_pgdn, act_bottom, |
60 | act_togins, act_chmode, act_delete, act_delch, act_mark, |
61 | act_cut, act_copy, act_paste, act_susp, act_goto, |
a63728c7 |
62 | act_togstat, act_search, act_search_backwards, act_save, |
63 | act_exitsave, act_recentre, act_width, act_offset |
6e182d98 |
64 | #ifdef TEST_BUFFER |
65 | , act_diagnostics |
66 | #endif |
67 | }; |
68 | int i; |
69 | |
70 | for (i=0; i<sizeof(names)/sizeof(*names); i++) |
71 | if (!strcmp(name, names[i])) |
72 | return actions[i]; |
73 | return NULL; |
74 | } |
75 | |
11825bd4 |
76 | static fileoffset_t begline(fileoffset_t x) { |
77 | fileoffset_t y = x + width-offset; |
6e182d98 |
78 | y -= (y % width); |
79 | y -= width-offset; |
80 | if (y < 0) |
81 | y = 0; |
82 | return y; |
83 | } |
84 | |
11825bd4 |
85 | static fileoffset_t endline(fileoffset_t x) { |
86 | fileoffset_t y = x + width-offset; |
6e182d98 |
87 | y -= (y % width); |
88 | y += width-1; |
89 | y -= width-offset; |
90 | if (y < 0) |
91 | y = 0; |
92 | return y; |
93 | } |
94 | |
95 | static void act_exit(void) { |
96 | static char question[] = "File is modified. Save before quitting? [yn] "; |
97 | if (modified) { |
98 | int c; |
99 | |
100 | display_moveto (display_rows-1, 0); |
101 | display_clear_to_eol (); |
102 | display_set_colour (COL_MINIBUF); |
103 | display_write_str (question); |
104 | display_refresh(); |
105 | do { |
106 | #if defined(unix) && !defined(GO32) |
107 | if (update_required) { |
108 | update(); |
109 | display_moveto (display_rows-1, 0); |
110 | display_clear_to_eol (); |
111 | display_set_colour (COL_MINIBUF); |
112 | display_write_str (question); |
113 | display_refresh(); |
114 | } |
115 | safe_update = TRUE; |
116 | #endif |
117 | c = display_getkey(); |
118 | #if defined(unix) && !defined(GO32) |
119 | safe_update = FALSE; |
120 | #endif |
121 | if (c >= 'a' && c <= 'z') |
122 | c += 'A'-'a'; |
123 | } while (c != 'Y' && c != 'N' && c != '\007'); |
124 | if (c == 'Y') { |
125 | act_save(); |
126 | if (modified) |
127 | return; /* couldn't save, so don't quit */ |
128 | draw_scr(); /* update the ** on status line! */ |
129 | } else if (c == '\007') { |
130 | return; /* don't even quit */ |
131 | } |
132 | } |
133 | finished = TRUE; |
134 | } |
135 | |
136 | static void act_save(void) { |
137 | static int backed_up = FALSE; |
138 | |
139 | if (!backed_up) { |
140 | if (!backup_file()) { |
141 | display_beep(); |
142 | strcpy (message, "Unable to back up file!"); |
143 | return; |
144 | } |
145 | backed_up = TRUE; |
146 | } |
147 | if (!save_file()) { |
148 | display_beep(); |
149 | strcpy (message, "Unable to save file!"); |
150 | return; |
151 | } |
152 | modified = FALSE; |
153 | } |
154 | |
155 | static void act_exitsave(void) { |
156 | act_save(); |
157 | draw_scr(); /* update ** on status line */ |
158 | act_exit(); |
159 | } |
160 | |
161 | static void act_top (void) { |
162 | cur_pos = top_pos = 0; |
163 | edit_type = !!edit_type; |
164 | } |
165 | |
166 | static void act_pgup(void) { |
167 | cur_pos -= (scrlines-1)*width; |
168 | if (cur_pos < 0) { |
169 | cur_pos = 0; |
170 | edit_type = !!edit_type; |
171 | } |
172 | if (top_pos > cur_pos) |
173 | top_pos = begline(cur_pos); |
174 | } |
175 | |
176 | static void act_up(void) { |
177 | cur_pos -= width; |
178 | if (cur_pos < 0) { |
179 | cur_pos = 0; |
180 | edit_type = !!edit_type; |
181 | } |
182 | if (top_pos > cur_pos) |
183 | top_pos = begline(cur_pos); |
184 | } |
185 | |
186 | static void act_home(void) { |
187 | cur_pos = begline(cur_pos); |
188 | if (cur_pos < 0) |
189 | cur_pos = 0; |
190 | if (top_pos > cur_pos) |
191 | top_pos = begline(cur_pos); |
192 | edit_type = !!edit_type; |
193 | } |
194 | |
195 | static void act_left(void) { |
196 | if (edit_type == 2) { |
197 | edit_type = 1; |
198 | return; |
199 | } else { |
200 | cur_pos--; |
201 | edit_type = 2*!!edit_type; |
202 | if (cur_pos < 0) { |
203 | cur_pos = 0; |
204 | edit_type = !!edit_type; |
205 | } |
206 | if (top_pos > cur_pos) |
207 | top_pos = begline(cur_pos); |
208 | } |
209 | } |
210 | |
211 | static void act_right(void) { |
11825bd4 |
212 | fileoffset_t new_top; |
6e182d98 |
213 | |
214 | if (edit_type == 1) { |
215 | if (cur_pos < file_size) |
216 | edit_type = 2; |
217 | return; |
218 | } else { |
219 | cur_pos++; |
220 | if (cur_pos > file_size) |
221 | cur_pos = file_size; |
222 | new_top = cur_pos - (scrlines-1) * width; |
223 | if (new_top < 0) |
224 | new_top = 0; |
225 | new_top = begline(new_top); |
226 | if (top_pos < new_top) |
227 | top_pos = new_top; |
228 | edit_type = !!edit_type; |
229 | } |
230 | } |
231 | |
232 | static void act_end(void) { |
11825bd4 |
233 | fileoffset_t new_top; |
6e182d98 |
234 | |
235 | cur_pos = endline(cur_pos); |
236 | edit_type = !!edit_type; |
237 | if (cur_pos >= file_size) |
238 | cur_pos = file_size; |
239 | new_top = cur_pos - (scrlines-1) * width; |
240 | if (new_top < 0) |
241 | new_top = 0; |
242 | new_top = begline(new_top); |
243 | if (top_pos < new_top) |
244 | top_pos = new_top; |
245 | } |
246 | |
247 | static void act_down(void) { |
11825bd4 |
248 | fileoffset_t new_top; |
6e182d98 |
249 | |
250 | cur_pos += width; |
251 | if (cur_pos >= file_size) { |
252 | cur_pos = file_size; |
253 | edit_type = !!edit_type; |
254 | } |
255 | new_top = cur_pos - (scrlines-1) * width; |
256 | if (new_top < 0) |
257 | new_top = 0; |
258 | new_top = begline(new_top); |
259 | if (top_pos < new_top) |
260 | top_pos = new_top; |
261 | } |
262 | |
263 | static void act_pgdn(void) { |
11825bd4 |
264 | fileoffset_t new_top; |
6e182d98 |
265 | |
266 | cur_pos += (scrlines-1) * width; |
267 | if (cur_pos >= file_size) { |
268 | cur_pos = file_size; |
269 | edit_type = !!edit_type; |
270 | } |
271 | new_top = cur_pos - (scrlines-1) * width; |
272 | if (new_top < 0) |
273 | new_top = 0; |
274 | new_top = begline(new_top); |
275 | if (top_pos < new_top) |
276 | top_pos = new_top; |
277 | } |
278 | |
279 | static void act_bottom (void) { |
11825bd4 |
280 | fileoffset_t new_top; |
6e182d98 |
281 | |
282 | cur_pos = file_size; |
283 | edit_type = !!edit_type; |
284 | new_top = cur_pos - (scrlines-1) * width; |
285 | if (new_top < 0) |
286 | new_top = 0; |
287 | new_top = begline(new_top); |
288 | if (top_pos < new_top) |
289 | top_pos = new_top; |
290 | } |
291 | |
292 | static void act_togins(void) { |
293 | if (look_mode || fix_mode) { |
294 | display_beep(); |
295 | sprintf(message, "Can't engage Insert mode when in %s mode", |
296 | (look_mode ? "LOOK" : "FIX")); |
297 | insert_mode = FALSE; /* safety! */ |
298 | } else |
299 | insert_mode = !insert_mode; |
300 | } |
301 | |
302 | static void act_chmode(void) { |
303 | if (ascii_enabled) |
304 | edit_type = !edit_type; /* 0 -> 1, [12] -> 0 */ |
305 | else if (edit_type == 0) /* just in case */ |
306 | edit_type = 1; |
307 | } |
308 | |
309 | void act_self_ins(void) { |
310 | int insert = insert_mode; |
311 | unsigned char c; |
312 | |
313 | if (look_mode) { |
314 | display_beep(); |
315 | strcpy (message, "Can't modify file in LOOK mode"); |
316 | return; |
317 | } |
318 | |
319 | if (edit_type) { |
320 | if (last_char >= '0' && last_char <= '9') |
321 | last_char -= '0'; |
322 | else if (last_char >= 'A' && last_char <= 'F') |
323 | last_char -= 'A'-10; |
324 | else if (last_char >= 'a' && last_char <= 'f') |
325 | last_char -= 'a'-10; |
326 | else { |
327 | display_beep(); |
328 | strcpy(message, "Not a valid character when in hex editing mode"); |
329 | return; |
330 | } |
331 | } |
332 | |
333 | if ( (!insert || edit_type == 2) && cur_pos == file_size) { |
334 | display_beep(); |
335 | strcpy(message, "End of file reached"); |
336 | return; |
337 | } |
338 | |
339 | switch (edit_type) { |
340 | case 0: /* ascii mode */ |
341 | c = last_char; |
342 | break; |
343 | case 1: /* hex, first digit */ |
344 | if (insert) |
345 | c = 0; |
346 | else |
347 | buf_fetch_data(filedata, &c, 1, cur_pos); |
348 | c &= 0xF; |
349 | c |= 16 * last_char; |
350 | break; |
351 | case 2: /* hex, second digit */ |
352 | buf_fetch_data(filedata, &c, 1, cur_pos); |
353 | c &= 0xF0; |
354 | c |= last_char; |
355 | insert = FALSE; |
356 | break; |
357 | } |
358 | |
359 | if (insert) { |
360 | buf_insert_data(filedata, &c, 1, cur_pos); |
361 | file_size++; |
362 | modified = TRUE; |
363 | } else if (cur_pos < file_size) { |
364 | buf_overwrite_data(filedata, &c, 1, cur_pos); |
365 | modified = TRUE; |
366 | } else { |
367 | display_beep(); |
368 | strcpy(message, "End of file reached"); |
369 | } |
370 | act_right(); |
371 | } |
372 | |
373 | static void act_delete(void) { |
374 | if (!insert_mode || (edit_type!=2 && cur_pos==0)) { |
375 | display_beep(); |
376 | strcpy (message, "Can't delete while not in Insert mode"); |
377 | } else if (cur_pos > 0 || edit_type == 2) { |
378 | act_left(); |
379 | buf_delete (filedata, 1, cur_pos); |
380 | file_size--; |
381 | edit_type = !!edit_type; |
382 | modified = TRUE; |
383 | } |
384 | } |
385 | |
386 | static void act_delch(void) { |
387 | if (!insert_mode) { |
388 | display_beep(); |
389 | strcpy (message, "Can't delete while not in Insert mode"); |
390 | } else if (cur_pos < file_size) { |
391 | buf_delete (filedata, 1, cur_pos); |
392 | file_size--; |
393 | edit_type = !!edit_type; |
394 | modified = TRUE; |
395 | } |
396 | } |
397 | |
398 | static void act_mark (void) { |
399 | if (look_mode) { |
400 | display_beep(); |
401 | strcpy (message, "Can't cut or paste in LOOK mode"); |
402 | marking = FALSE; /* safety */ |
403 | return; |
404 | } |
405 | marking = !marking; |
406 | mark_point = cur_pos; |
407 | } |
408 | |
409 | static void act_cut (void) { |
11825bd4 |
410 | fileoffset_t marktop, marksize; |
6e182d98 |
411 | |
412 | if (!marking || mark_point==cur_pos) { |
413 | display_beep(); |
414 | strcpy (message, "Set mark first"); |
415 | return; |
416 | } |
417 | if (!insert_mode) { |
418 | display_beep(); |
419 | strcpy (message, "Can't cut while not in Insert mode"); |
420 | return; |
421 | } |
422 | marktop = cur_pos; |
423 | marksize = mark_point - cur_pos; |
424 | if (marksize < 0) { |
425 | marktop += marksize; |
426 | marksize = -marksize; |
427 | } |
428 | if (cutbuffer) |
429 | buf_free (cutbuffer); |
430 | cutbuffer = buf_cut (filedata, marksize, marktop); |
431 | file_size -= marksize; |
432 | cur_pos = marktop; |
433 | if (cur_pos < 0) |
434 | cur_pos = 0; |
435 | if (top_pos > cur_pos) |
436 | top_pos = begline(cur_pos); |
437 | edit_type = !!edit_type; |
438 | modified = TRUE; |
439 | marking = FALSE; |
440 | } |
441 | |
442 | static void act_copy (void) { |
11825bd4 |
443 | fileoffset_t marktop, marksize; |
6e182d98 |
444 | |
445 | if (!marking) { |
446 | display_beep(); |
447 | strcpy (message, "Set mark first"); |
448 | return; |
449 | } |
450 | marktop = cur_pos; |
451 | marksize = mark_point - cur_pos; |
452 | if (marksize < 0) { |
453 | marktop += marksize; |
454 | marksize = -marksize; |
455 | } |
456 | if (cutbuffer) |
457 | buf_free (cutbuffer); |
458 | cutbuffer = buf_copy (filedata, marksize, marktop); |
459 | marking = FALSE; |
460 | } |
461 | |
462 | static void act_paste (void) { |
11825bd4 |
463 | fileoffset_t cutsize, new_top; |
6e182d98 |
464 | |
d38a0ee8 |
465 | if (!cutbuffer) |
466 | return; |
6e182d98 |
467 | cutsize = buf_length (cutbuffer); |
468 | if (!insert_mode) { |
469 | if (cur_pos + cutsize > file_size) { |
470 | display_beep(); |
471 | strcpy (message, "Too close to end of file to paste"); |
472 | return; |
473 | } |
474 | buf_delete (filedata, cutsize, cur_pos); |
475 | file_size -= cutsize; |
476 | } |
477 | buf_paste (filedata, cutbuffer, cur_pos); |
478 | modified = TRUE; |
479 | cur_pos += cutsize; |
480 | file_size += cutsize; |
481 | edit_type = !!edit_type; |
482 | new_top = cur_pos - (scrlines-1) * width; |
483 | if (new_top < 0) |
484 | new_top = 0; |
485 | new_top = begline(new_top); |
486 | if (top_pos < new_top) |
487 | top_pos = new_top; |
488 | } |
489 | |
490 | static void act_susp (void) { |
491 | suspend(); |
492 | } |
493 | |
494 | static void act_goto (void) { |
495 | char buffer[80]; |
11825bd4 |
496 | fileoffset_t position, new_top; |
6e182d98 |
497 | int error; |
498 | |
499 | if (!get_str("Enter position to go to: ", buffer, FALSE)) |
500 | return; /* user break */ |
501 | |
502 | position = parse_num (buffer, &error); |
503 | if (error) { |
504 | display_beep(); |
505 | strcpy (message, "Unable to parse position value"); |
506 | return; |
507 | } |
508 | |
509 | if (position < 0 || position > file_size) { |
510 | display_beep(); |
511 | strcpy (message, "Position is outside bounds of file"); |
512 | return; |
513 | } |
514 | |
515 | cur_pos = position; |
516 | edit_type = !!edit_type; |
517 | new_top = cur_pos - (scrlines-1) * width; |
518 | if (new_top < 0) |
519 | new_top = 0; |
520 | new_top = begline(new_top); |
521 | if (top_pos > cur_pos) |
522 | top_pos = begline(cur_pos); |
523 | if (top_pos < new_top) |
524 | top_pos = new_top; |
525 | } |
526 | |
527 | static void act_togstat (void) { |
528 | if (statfmt == decstatus) |
529 | statfmt = hexstatus; |
530 | else |
531 | statfmt = decstatus; |
532 | } |
533 | |
a63728c7 |
534 | static int search_prompt(char *withdef, char *withoutdef) |
535 | { |
6e182d98 |
536 | char buffer[80]; |
a63728c7 |
537 | int len; |
6e182d98 |
538 | |
a63728c7 |
539 | if (!get_str(last_search ? withdef : withoutdef, buffer, TRUE)) |
540 | return 0; /* user break */ |
541 | if (!last_search && !*buffer) { |
6e182d98 |
542 | strcpy (message, "Search aborted."); |
a63728c7 |
543 | return 0; |
6e182d98 |
544 | } |
545 | |
546 | if (!*buffer) { |
a63728c7 |
547 | len = last_search->len; |
6e182d98 |
548 | } else { |
549 | len = parse_quoted (buffer); |
550 | if (len == -1) { |
551 | display_beep(); |
552 | strcpy (message, "Invalid escape sequence in search string"); |
a63728c7 |
553 | return 0; |
6e182d98 |
554 | } |
a63728c7 |
555 | if (last_search) |
556 | free_search(last_search); |
557 | last_search = build_search (buffer, len); |
6e182d98 |
558 | } |
559 | |
a63728c7 |
560 | return 1; |
561 | } |
562 | |
563 | static void act_search (void) { |
11825bd4 |
564 | int len; |
565 | fileoffset_t posn, dfapos; |
a63728c7 |
566 | DFA dfa; |
567 | static unsigned char sblk[SEARCH_BLK]; |
568 | static char withdef[] = "Search forward (default=last): "; |
569 | static char withoutdef[] = "Search forward: "; |
570 | |
571 | if (!search_prompt(withdef, withoutdef)) |
572 | return; |
573 | |
574 | dfa = last_search->forward; |
575 | len = last_search->len; |
6e182d98 |
576 | dfapos = 0; |
577 | |
578 | for (posn = cur_pos+1; posn < file_size; posn++) { |
579 | unsigned char *q; |
580 | int size = SEARCH_BLK; |
581 | |
582 | if (size > file_size-posn) |
583 | size = file_size-posn; |
584 | buf_fetch_data (filedata, sblk, size, posn); |
585 | q = sblk; |
586 | while (size--) { |
587 | posn++; |
588 | dfapos = dfa[dfapos][*q++]; |
589 | if (dfapos == len) { |
11825bd4 |
590 | fileoffset_t new_top; |
6e182d98 |
591 | |
592 | cur_pos = posn - len; |
593 | edit_type = !!edit_type; |
594 | new_top = cur_pos - (scrlines-1) * width; |
595 | new_top = begline(new_top); |
596 | if (top_pos < new_top) |
597 | top_pos = new_top; |
598 | return; |
599 | } |
600 | } |
601 | } |
602 | strcpy (message, "Not found."); |
603 | } |
604 | |
a63728c7 |
605 | static void act_search_backwards (void) { |
11825bd4 |
606 | int len; |
607 | fileoffset_t posn, dfapos; |
a63728c7 |
608 | DFA dfa; |
609 | static unsigned char sblk[SEARCH_BLK]; |
610 | static char withdef[] = "Search backward (default=last): "; |
611 | static char withoutdef[] = "Search backward: "; |
612 | |
613 | if (!search_prompt(withdef, withoutdef)) |
614 | return; |
615 | |
616 | dfa = last_search->reverse; |
617 | len = last_search->len; |
618 | dfapos = 0; |
619 | |
620 | posn = cur_pos + len - 1; |
621 | if (posn >= file_size) |
622 | posn = file_size; |
623 | |
624 | for (; posn >= 0; posn--) { |
625 | unsigned char *q; |
626 | int size = SEARCH_BLK; |
627 | |
628 | if (size > posn) |
629 | size = posn; |
630 | buf_fetch_data (filedata, sblk, size, posn-size); |
631 | q = sblk + size; |
632 | while (size--) { |
633 | posn--; |
634 | dfapos = dfa[dfapos][*--q]; |
635 | if (dfapos == len) { |
11825bd4 |
636 | fileoffset_t new_top; |
a63728c7 |
637 | |
638 | cur_pos = posn; |
639 | edit_type = !!edit_type; |
640 | new_top = cur_pos - (scrlines-1) * width; |
641 | new_top = begline(new_top); |
642 | if (top_pos > new_top) |
643 | top_pos = new_top; |
644 | return; |
645 | } |
646 | } |
647 | } |
648 | strcpy (message, "Not found."); |
649 | } |
650 | |
6e182d98 |
651 | static void act_recentre (void) { |
652 | top_pos = cur_pos - (display_rows-2)/2 * width; |
653 | if (top_pos < 0) |
654 | top_pos = 0; |
655 | top_pos = begline(top_pos); |
656 | } |
657 | |
658 | static void act_width (void) { |
659 | char buffer[80]; |
660 | char prompt[80]; |
11825bd4 |
661 | fileoffset_t w; |
662 | fileoffset_t new_top; |
6e182d98 |
663 | int error; |
664 | |
11825bd4 |
665 | sprintf (prompt, "Enter screen width in bytes (now %"OFF"d): ", width); |
6e182d98 |
666 | if (!get_str (prompt, buffer, FALSE)) |
667 | return; |
668 | w = parse_num (buffer, &error); |
669 | if (error) { |
670 | display_beep(); |
671 | strcpy (message, "Unable to parse width value"); |
672 | return; |
673 | } |
674 | if (w > 0) { |
675 | width = w; |
676 | fix_offset(); |
677 | new_top = cur_pos - (scrlines-1) * width; |
678 | new_top = begline(new_top); |
679 | if (top_pos < new_top) |
680 | top_pos = new_top; |
681 | } |
682 | } |
683 | |
684 | static void act_offset (void) { |
685 | char buffer[80]; |
686 | char prompt[80]; |
11825bd4 |
687 | fileoffset_t o; |
688 | fileoffset_t new_top; |
6e182d98 |
689 | int error; |
690 | |
11825bd4 |
691 | sprintf (prompt, "Enter start-of-file offset in bytes (now %"OFF"d): ", |
6e182d98 |
692 | realoffset); |
693 | if (!get_str (prompt, buffer, FALSE)) |
694 | return; |
695 | o = parse_num (buffer, &error); |
696 | if (error) { |
697 | display_beep(); |
698 | strcpy (message, "Unable to parse offset value"); |
699 | return; |
700 | } |
701 | if (o >= 0) { |
702 | realoffset = o; |
703 | fix_offset(); |
704 | new_top = cur_pos - (scrlines-1) * width; |
705 | new_top = begline(new_top); |
706 | if (top_pos < new_top) |
707 | top_pos = new_top; |
708 | } |
709 | } |
710 | |
711 | #ifdef TEST_BUFFER |
712 | static void act_diagnostics(void) |
713 | { |
714 | extern void buffer_diagnostic(buffer *buf, char *title); |
715 | |
716 | buffer_diagnostic(filedata, "filedata"); |
717 | buffer_diagnostic(cutbuffer, "cutbuffer"); |
718 | } |
719 | #endif |