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08a24c47 JB |
1 | /* terminal control module for terminals described by TERMCAP |
2 | Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <stdio.h> | |
22 | #include <ctype.h> | |
23 | #include "config.h" | |
24 | #include "termchar.h" | |
25 | #include "termopts.h" | |
26 | #include "cm.h" | |
27 | #undef NULL | |
28 | #include "lisp.h" | |
29 | #include "screen.h" | |
30 | #include "disptab.h" | |
31 | #include "termhooks.h" | |
32 | ||
33 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
34 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
35 | ||
36 | #define OUTPUT(a) tputs (a, SCREEN_HEIGHT (selected_screen) - curY, cmputc) | |
37 | #define OUTPUT1(a) tputs (a, 1, cmputc) | |
38 | #define OUTPUTL(a, lines) tputs (a, lines, cmputc) | |
39 | #define OUTPUT_IF(a) { if (a) tputs (a, SCREEN_HEIGHT (selected_screen) - curY, cmputc); } | |
40 | #define OUTPUT1_IF(a) { if (a) tputs (a, 1, cmputc); } | |
41 | ||
42 | /* Terminal charateristics that higher levels want to look at. | |
43 | These are all extern'd in termchar.h */ | |
44 | ||
45 | #ifndef MULTI_SCREEN | |
46 | int screen_width; /* Number of usable columns */ | |
47 | int screen_height; /* Number of lines */ | |
48 | #endif | |
49 | ||
50 | int must_write_spaces; /* Nonzero means spaces in the text | |
51 | must actually be output; can't just skip | |
52 | over some columns to leave them blank. */ | |
53 | int min_padding_speed; /* Speed below which no padding necessary */ | |
54 | ||
55 | int line_ins_del_ok; /* Terminal can insert and delete lines */ | |
56 | int char_ins_del_ok; /* Terminal can insert and delete chars */ | |
57 | int scroll_region_ok; /* Terminal supports setting the | |
58 | scroll window */ | |
59 | int memory_below_screen; /* Terminal remembers lines | |
60 | scrolled off bottom */ | |
61 | int fast_clear_end_of_line; /* Terminal has a `ce' string */ | |
62 | ||
63 | int dont_calculate_costs; /* Nonzero means don't bother computing */ | |
64 | /* various cost tables; we won't use them. */ | |
65 | ||
66 | /* Nonzero means no need to redraw the entire screen on resuming | |
67 | a suspended Emacs. This is useful on terminals with multiple pages, | |
68 | where one page is used for Emacs and another for all else. */ | |
69 | int no_redraw_on_reenter; | |
70 | ||
71 | /* Hook functions that you can set to snap out the functions in this file. | |
72 | These are all extern'd in termhooks.h */ | |
73 | ||
74 | int (*cursor_to_hook) (); | |
75 | int (*raw_cursor_to_hook) (); | |
76 | ||
77 | int (*clear_to_end_hook) (); | |
78 | int (*clear_screen_hook) (); | |
79 | int (*clear_end_of_line_hook) (); | |
80 | ||
81 | int (*ins_del_lines_hook) (); | |
82 | ||
83 | int (*change_line_highlight_hook) (); | |
84 | int (*reassert_line_highlight_hook) (); | |
85 | ||
86 | int (*insert_glyphs_hook) (); | |
87 | int (*write_glyphs_hook) (); | |
88 | int (*delete_glyphs_hook) (); | |
89 | ||
90 | int (*ring_bell_hook) (); | |
91 | ||
92 | int (*reset_terminal_modes_hook) (); | |
93 | int (*set_terminal_modes_hook) (); | |
94 | int (*update_begin_hook) (); | |
95 | int (*update_end_hook) (); | |
96 | int (*set_terminal_window_hook) (); | |
97 | ||
98 | int (*read_socket_hook) (); | |
99 | ||
69a46d1c JB |
100 | /* Return the current position of the mouse. This should clear |
101 | mouse_moved until the next motion event arrives. */ | |
102 | void (*mouse_position_hook) ( /* SCREEN_PTR *s, | |
103 | Lisp_Object *x, | |
104 | Lisp_Object *y, | |
105 | Lisp_Object *time */ ); | |
08a24c47 | 106 | |
2e146aa4 JB |
107 | /* When reading from a minibuffer in a different screen, Emacs wants |
108 | to shift the highlight from the selected screen to the minibuffer's | |
109 | screen; under X, this means it lies about where the focus is. | |
110 | This hook tells the window system code to re-decide where to put | |
111 | the highlight. */ | |
fcb764df | 112 | void (*screen_rehighlight_hook) ( /* SCREEN_PTR s */ ); |
2e146aa4 | 113 | |
08a24c47 JB |
114 | /* Strings, numbers and flags taken from the termcap entry. */ |
115 | ||
116 | char *TS_ins_line; /* termcap "al" */ | |
117 | char *TS_ins_multi_lines; /* "AL" (one parameter, # lines to insert) */ | |
118 | char *TS_bell; /* "bl" */ | |
119 | char *TS_clr_to_bottom; /* "cd" */ | |
120 | char *TS_clr_line; /* "ce", clear to end of line */ | |
121 | char *TS_clr_screen; /* "cl" */ | |
122 | char *TS_set_scroll_region; /* "cs" (2 params, first line and last line) */ | |
123 | char *TS_set_scroll_region_1; /* "cS" (4 params: total lines, | |
124 | lines above scroll region, lines below it, | |
125 | total lines again) */ | |
126 | char *TS_del_char; /* "dc" */ | |
127 | char *TS_del_multi_chars; /* "DC" (one parameter, # chars to delete) */ | |
128 | char *TS_del_line; /* "dl" */ | |
129 | char *TS_del_multi_lines; /* "DL" (one parameter, # lines to delete) */ | |
130 | char *TS_delete_mode; /* "dm", enter character-delete mode */ | |
131 | char *TS_end_delete_mode; /* "ed", leave character-delete mode */ | |
132 | char *TS_end_insert_mode; /* "ei", leave character-insert mode */ | |
133 | char *TS_ins_char; /* "ic" */ | |
134 | char *TS_ins_multi_chars; /* "IC" (one parameter, # chars to insert) */ | |
135 | char *TS_insert_mode; /* "im", enter character-insert mode */ | |
136 | char *TS_pad_inserted_char; /* "ip". Just padding, no commands. */ | |
137 | char *TS_end_keypad_mode; /* "ke" */ | |
138 | char *TS_keypad_mode; /* "ks" */ | |
139 | char *TS_pad_char; /* "pc", char to use as padding */ | |
140 | char *TS_repeat; /* "rp" (2 params, # times to repeat | |
141 | and character to be repeated) */ | |
142 | char *TS_end_standout_mode; /* "se" */ | |
143 | char *TS_fwd_scroll; /* "sf" */ | |
144 | char *TS_standout_mode; /* "so" */ | |
145 | char *TS_rev_scroll; /* "sr" */ | |
146 | char *TS_end_termcap_modes; /* "te" */ | |
147 | char *TS_termcap_modes; /* "ti" */ | |
148 | char *TS_visible_bell; /* "vb" */ | |
149 | char *TS_end_visual_mode; /* "ve" */ | |
150 | char *TS_visual_mode; /* "vi" */ | |
151 | char *TS_set_window; /* "wi" (4 params, start and end of window, | |
152 | each as vpos and hpos) */ | |
153 | ||
154 | int TF_hazeltine; /* termcap hz flag. */ | |
155 | int TF_insmode_motion; /* termcap mi flag: can move while in insert mode. */ | |
156 | int TF_standout_motion; /* termcap mi flag: can move while in standout mode. */ | |
157 | int TF_underscore; /* termcap ul flag: _ underlines if overstruck on | |
158 | nonblank position. Must clear before writing _. */ | |
159 | int TF_teleray; /* termcap xt flag: many weird consequences. | |
160 | For t1061. */ | |
161 | ||
162 | int TF_xs; /* Nonzero for "xs". If set together with | |
163 | TN_standout_width == 0, it means don't bother | |
164 | to write any end-standout cookies. */ | |
165 | ||
166 | int TN_standout_width; /* termcap sg number: width occupied by standout | |
167 | markers */ | |
168 | ||
169 | static int RPov; /* # chars to start a TS_repeat */ | |
170 | ||
171 | static int delete_in_insert_mode; /* delete mode == insert mode */ | |
172 | ||
173 | static int se_is_so; /* 1 if same string both enters and leaves | |
174 | standout mode */ | |
175 | ||
176 | /* internal state */ | |
177 | ||
178 | /* Number of chars of space used for standout marker at beginning of line, | |
179 | or'd with 0100. Zero if no standout marker at all. | |
180 | ||
181 | Used IFF TN_standout_width >= 0. */ | |
182 | ||
183 | static char *chars_wasted; | |
184 | static char *copybuf; | |
185 | ||
186 | /* nonzero means supposed to write text in standout mode. */ | |
187 | int standout_requested; | |
188 | ||
189 | int insert_mode; /* Nonzero when in insert mode. */ | |
190 | int standout_mode; /* Nonzero when in standout mode. */ | |
191 | ||
192 | /* Size of window specified by higher levels. | |
193 | This is the number of lines, from the top of screen downwards, | |
194 | which can participate in insert-line/delete-line operations. | |
195 | ||
196 | Effectively it excludes the bottom screen_height - specified_window_size | |
197 | lines from those operations. */ | |
198 | ||
199 | int specified_window; | |
200 | ||
201 | /* Screen currently being redisplayed; 0 if not currently redisplaying. | |
202 | (Direct output does not count). */ | |
203 | ||
204 | SCREEN_PTR updating_screen; | |
205 | ||
206 | char *tparam (); | |
207 | \f | |
208 | ring_bell () | |
209 | { | |
210 | if (! SCREEN_IS_TERMCAP (selected_screen)) | |
211 | { | |
212 | (*ring_bell_hook) (); | |
213 | return; | |
214 | } | |
215 | OUTPUT (TS_visible_bell && visible_bell ? TS_visible_bell : TS_bell); | |
216 | } | |
217 | ||
218 | set_terminal_modes () | |
219 | { | |
220 | if (! SCREEN_IS_TERMCAP (selected_screen)) | |
221 | { | |
222 | (*set_terminal_modes_hook) (); | |
223 | return; | |
224 | } | |
225 | OUTPUT_IF (TS_termcap_modes); | |
226 | OUTPUT_IF (TS_visual_mode); | |
227 | OUTPUT_IF (TS_keypad_mode); | |
228 | losecursor (); | |
229 | } | |
230 | ||
231 | reset_terminal_modes () | |
232 | { | |
233 | if (! SCREEN_IS_TERMCAP (selected_screen)) | |
234 | { | |
235 | (*reset_terminal_modes_hook) (); | |
236 | return; | |
237 | } | |
238 | if (TN_standout_width < 0) | |
239 | turn_off_highlight (); | |
240 | turn_off_insert (); | |
241 | OUTPUT_IF (TS_end_keypad_mode); | |
242 | OUTPUT_IF (TS_end_visual_mode); | |
243 | OUTPUT_IF (TS_end_termcap_modes); | |
244 | /* Output raw CR so kernel can track the cursor hpos. */ | |
245 | /* But on magic-cookie terminals this can erase an end-standout marker and | |
246 | cause the rest of the screen to be in standout, so move down first. */ | |
247 | if (TN_standout_width >= 0) | |
248 | cmputc ('\n'); | |
249 | cmputc ('\r'); | |
250 | } | |
251 | ||
252 | update_begin (s) | |
253 | SCREEN_PTR s; | |
254 | { | |
255 | updating_screen = s; | |
256 | if (! SCREEN_IS_TERMCAP (updating_screen)) | |
257 | (*update_begin_hook) (s); | |
258 | } | |
259 | ||
260 | update_end (s) | |
261 | SCREEN_PTR s; | |
262 | { | |
263 | if (! SCREEN_IS_TERMCAP (updating_screen)) | |
264 | { | |
265 | (*update_end_hook) (s); | |
266 | updating_screen = 0; | |
267 | return; | |
268 | } | |
269 | turn_off_insert (); | |
270 | background_highlight (); | |
271 | standout_requested = 0; | |
272 | updating_screen = 0; | |
273 | } | |
274 | ||
275 | set_terminal_window (size) | |
276 | int size; | |
277 | { | |
278 | if (! SCREEN_IS_TERMCAP (updating_screen)) | |
279 | { | |
280 | (*set_terminal_window_hook) (size); | |
281 | return; | |
282 | } | |
283 | specified_window = size ? size : SCREEN_HEIGHT (selected_screen); | |
284 | if (!scroll_region_ok) | |
285 | return; | |
286 | set_scroll_region (0, specified_window); | |
287 | } | |
288 | ||
289 | set_scroll_region (start, stop) | |
290 | int start, stop; | |
291 | { | |
292 | char *buf; | |
293 | if (TS_set_scroll_region) | |
294 | { | |
295 | buf = tparam (TS_set_scroll_region, 0, 0, start, stop - 1); | |
296 | } | |
297 | else if (TS_set_scroll_region_1) | |
298 | { | |
299 | buf = tparam (TS_set_scroll_region_1, 0, 0, | |
300 | SCREEN_HEIGHT (selected_screen), start, | |
301 | SCREEN_HEIGHT (selected_screen) - stop, | |
302 | SCREEN_HEIGHT (selected_screen)); | |
303 | } | |
304 | else | |
305 | { | |
306 | buf = tparam (TS_set_window, 0, 0, start, 0, stop, SCREEN_WIDTH (selected_screen)); | |
307 | } | |
308 | OUTPUT (buf); | |
309 | free (buf); | |
310 | losecursor (); | |
311 | } | |
312 | \f | |
313 | turn_on_insert () | |
314 | { | |
315 | if (!insert_mode) | |
316 | OUTPUT (TS_insert_mode); | |
317 | insert_mode = 1; | |
318 | } | |
319 | ||
320 | turn_off_insert () | |
321 | { | |
322 | if (insert_mode) | |
323 | OUTPUT (TS_end_insert_mode); | |
324 | insert_mode = 0; | |
325 | } | |
326 | \f | |
327 | /* Handle highlighting when TN_standout_width (termcap sg) is not specified. | |
328 | In these terminals, output is affected by the value of standout | |
329 | mode when the output is written. | |
330 | ||
331 | These functions are called on all terminals, but do nothing | |
332 | on terminals whose standout mode does not work that way. */ | |
333 | ||
334 | turn_off_highlight () | |
335 | { | |
336 | if (TN_standout_width < 0) | |
337 | { | |
338 | if (standout_mode) | |
339 | OUTPUT_IF (TS_end_standout_mode); | |
340 | standout_mode = 0; | |
341 | } | |
342 | } | |
343 | ||
344 | turn_on_highlight () | |
345 | { | |
346 | if (TN_standout_width < 0) | |
347 | { | |
348 | if (!standout_mode) | |
349 | OUTPUT_IF (TS_standout_mode); | |
350 | standout_mode = 1; | |
351 | } | |
352 | } | |
353 | ||
354 | /* Set standout mode to the state it should be in for | |
355 | empty space inside windows. What this is, | |
356 | depends on the user option inverse-video. */ | |
357 | ||
358 | background_highlight () | |
359 | { | |
360 | if (TN_standout_width >= 0) | |
361 | return; | |
362 | if (inverse_video) | |
363 | turn_on_highlight (); | |
364 | else | |
365 | turn_off_highlight (); | |
366 | } | |
367 | ||
368 | /* Set standout mode to the mode specified for the text to be output. */ | |
369 | ||
370 | static | |
371 | highlight_if_desired () | |
372 | { | |
373 | if (TN_standout_width >= 0) | |
374 | return; | |
375 | if (!inverse_video == !standout_requested) | |
376 | turn_off_highlight (); | |
377 | else | |
378 | turn_on_highlight (); | |
379 | } | |
380 | \f | |
381 | /* Handle standout mode for terminals in which TN_standout_width >= 0. | |
382 | On these terminals, standout is controlled by markers that | |
383 | live inside the screen memory. TN_standout_width is the width | |
384 | that the marker occupies in memory. Standout runs from the marker | |
385 | to the end of the line on some terminals, or to the next | |
386 | turn-off-standout marker (TS_end_standout_mode) string | |
387 | on other terminals. */ | |
388 | ||
389 | /* Write a standout marker or end-standout marker at the front of the line | |
390 | at vertical position vpos. */ | |
391 | ||
392 | write_standout_marker (flag, vpos) | |
393 | int flag, vpos; | |
394 | { | |
395 | if (flag || (TS_end_standout_mode && !TF_teleray && !se_is_so | |
396 | && !(TF_xs && TN_standout_width == 0))) | |
397 | { | |
398 | cmgoto (vpos, 0); | |
399 | cmplus (TN_standout_width); | |
400 | OUTPUT (flag ? TS_standout_mode : TS_end_standout_mode); | |
401 | chars_wasted[curY] = TN_standout_width | 0100; | |
402 | } | |
403 | } | |
404 | \f | |
405 | /* External interface to control of standout mode. | |
406 | Call this when about to modify line at position VPOS | |
407 | and not change whether it is highlighted. */ | |
408 | ||
409 | reassert_line_highlight (highlight, vpos) | |
410 | int highlight; | |
411 | int vpos; | |
412 | { | |
413 | if (! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) | |
414 | { | |
415 | (*reassert_line_highlight_hook) (highlight, vpos); | |
416 | return; | |
417 | } | |
418 | if (TN_standout_width < 0) | |
419 | /* Handle terminals where standout takes affect at output time */ | |
420 | standout_requested = highlight; | |
421 | else if (chars_wasted[vpos] == 0) | |
422 | /* For terminals with standout markers, write one on this line | |
423 | if there isn't one already. */ | |
424 | write_standout_marker (highlight, vpos); | |
425 | } | |
426 | ||
427 | /* Call this when about to modify line at position VPOS | |
428 | and change whether it is highlighted. */ | |
429 | ||
430 | change_line_highlight (new_highlight, vpos, first_unused_hpos) | |
431 | int new_highlight, vpos, first_unused_hpos; | |
432 | { | |
433 | standout_requested = new_highlight; | |
434 | if (! SCREEN_IS_TERMCAP (updating_screen)) | |
435 | { | |
436 | (*change_line_highlight_hook) (new_highlight, vpos, first_unused_hpos); | |
437 | return; | |
438 | } | |
439 | ||
440 | cursor_to (vpos, 0); | |
441 | ||
442 | if (TN_standout_width < 0) | |
443 | background_highlight (); | |
444 | /* If line starts with a marker, delete the marker */ | |
445 | else if (TS_clr_line && chars_wasted[curY]) | |
446 | { | |
447 | turn_off_insert (); | |
448 | /* On Teleray, make sure to erase the SO marker. */ | |
449 | if (TF_teleray) | |
450 | { | |
451 | cmgoto (curY - 1, SCREEN_WIDTH (selected_screen) - 4); | |
452 | OUTPUT ("\033S"); | |
453 | curY++; /* ESC S moves to next line where the TS_standout_mode was */ | |
454 | curX = 0; | |
455 | } | |
456 | else | |
457 | cmgoto (curY, 0); /* reposition to kill standout marker */ | |
458 | } | |
459 | clear_end_of_line_raw (first_unused_hpos); | |
460 | reassert_line_highlight (new_highlight, curY); | |
461 | } | |
462 | \f | |
463 | ||
464 | /* Move to absolute position, specified origin 0 */ | |
465 | ||
466 | cursor_to (row, col) | |
467 | { | |
468 | if (! SCREEN_IS_TERMCAP ((updating_screen | |
469 | ? updating_screen | |
470 | : selected_screen)) | |
471 | && cursor_to_hook) | |
472 | { | |
473 | (*cursor_to_hook) (row, col); | |
474 | return; | |
475 | } | |
476 | ||
477 | col += chars_wasted[row] & 077; | |
478 | if (curY == row && curX == col) | |
479 | return; | |
480 | if (!TF_standout_motion) | |
481 | background_highlight (); | |
482 | if (!TF_insmode_motion) | |
483 | turn_off_insert (); | |
484 | cmgoto (row, col); | |
485 | } | |
486 | ||
487 | /* Similar but don't take any account of the wasted characters. */ | |
488 | ||
489 | raw_cursor_to (row, col) | |
490 | { | |
491 | if (! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) | |
492 | { | |
493 | (*raw_cursor_to_hook) (row, col); | |
494 | return; | |
495 | } | |
496 | if (curY == row && curX == col) | |
497 | return; | |
498 | if (!TF_standout_motion) | |
499 | background_highlight (); | |
500 | if (!TF_insmode_motion) | |
501 | turn_off_insert (); | |
502 | cmgoto (row, col); | |
503 | } | |
504 | \f | |
505 | /* Erase operations */ | |
506 | ||
507 | /* clear from cursor to end of screen */ | |
508 | clear_to_end () | |
509 | { | |
510 | register int i; | |
511 | ||
512 | if (clear_to_end_hook && SCREEN_IS_TERMCAP (updating_screen)) | |
513 | { | |
514 | (*clear_to_end_hook) (); | |
515 | return; | |
516 | } | |
517 | if (TS_clr_to_bottom) | |
518 | { | |
519 | background_highlight (); | |
520 | OUTPUT (TS_clr_to_bottom); | |
521 | bzero (chars_wasted + curY, SCREEN_HEIGHT (selected_screen) - curY); | |
522 | } | |
523 | else | |
524 | { | |
525 | for (i = curY; i < SCREEN_HEIGHT (selected_screen); i++) | |
526 | { | |
527 | cursor_to (i, 0); | |
528 | clear_end_of_line_raw (SCREEN_WIDTH (selected_screen)); | |
529 | } | |
530 | } | |
531 | } | |
532 | ||
533 | /* Clear entire screen */ | |
534 | ||
535 | clear_screen () | |
536 | { | |
537 | if (clear_screen_hook | |
538 | && ! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) | |
539 | { | |
540 | (*clear_screen_hook) (); | |
541 | return; | |
542 | } | |
543 | if (TS_clr_screen) | |
544 | { | |
545 | background_highlight (); | |
546 | OUTPUT (TS_clr_screen); | |
547 | bzero (chars_wasted, SCREEN_HEIGHT (selected_screen)); | |
548 | cmat (0, 0); | |
549 | } | |
550 | else | |
551 | { | |
552 | cursor_to (0, 0); | |
553 | clear_to_end (); | |
554 | } | |
555 | } | |
556 | ||
557 | /* Clear to end of line, but do not clear any standout marker. | |
558 | Assumes that the cursor is positioned at a character of real text, | |
559 | which implies it cannot be before a standout marker | |
560 | unless the marker has zero width. | |
561 | ||
562 | Note that the cursor may be moved. */ | |
563 | ||
564 | clear_end_of_line (first_unused_hpos) | |
565 | int first_unused_hpos; | |
566 | { | |
567 | static GLYPH buf[1] = {SPACEGLYPH}; | |
568 | if (SCREEN_IS_TERMCAP (selected_screen) | |
569 | && TN_standout_width == 0 && curX == 0 && chars_wasted[curY] != 0) | |
570 | write_glyphs (buf, 1); | |
571 | clear_end_of_line_raw (first_unused_hpos); | |
572 | } | |
573 | ||
574 | /* Clear from cursor to end of line. | |
575 | Assume that the line is already clear starting at column first_unused_hpos. | |
576 | If the cursor is at a standout marker, erase the marker. | |
577 | ||
578 | Note that the cursor may be moved, on terminals lacking a `ce' string. */ | |
579 | ||
580 | clear_end_of_line_raw (first_unused_hpos) | |
581 | int first_unused_hpos; | |
582 | { | |
583 | register int i; | |
584 | ||
585 | if (clear_end_of_line_hook | |
586 | && ! SCREEN_IS_TERMCAP ((updating_screen | |
587 | ? updating_screen | |
588 | : selected_screen))) | |
589 | { | |
590 | (*clear_end_of_line_hook) (first_unused_hpos); | |
591 | return; | |
592 | } | |
593 | ||
594 | first_unused_hpos += chars_wasted[curY] & 077; | |
595 | if (curX >= first_unused_hpos) | |
596 | return; | |
597 | /* Notice if we are erasing a magic cookie */ | |
598 | if (curX == 0) | |
599 | chars_wasted[curY] = 0; | |
600 | background_highlight (); | |
601 | if (TS_clr_line) | |
602 | { | |
603 | OUTPUT1 (TS_clr_line); | |
604 | } | |
605 | else | |
606 | { /* have to do it the hard way */ | |
607 | turn_off_insert (); | |
608 | ||
609 | /* Do not write in last row last col with Autowrap on. */ | |
610 | if (AutoWrap && curY == SCREEN_HEIGHT (selected_screen) - 1 | |
611 | && first_unused_hpos == SCREEN_WIDTH (selected_screen)) | |
612 | first_unused_hpos--; | |
613 | ||
614 | for (i = curX; i < first_unused_hpos; i++) | |
615 | { | |
616 | if (termscript) | |
617 | fputc (' ', termscript); | |
618 | putchar (' '); | |
619 | } | |
620 | cmplus (first_unused_hpos - curX); | |
621 | } | |
622 | } | |
623 | \f | |
624 | ||
625 | write_glyphs (string, len) | |
626 | register GLYPH *string; | |
627 | register int len; | |
628 | { | |
629 | register GLYPH g; | |
630 | register int tlen = GLYPH_TABLE_LENGTH; | |
631 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; | |
632 | ||
633 | if (write_glyphs_hook | |
634 | && ! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) | |
635 | { | |
636 | (*write_glyphs_hook) (string, len); | |
637 | return; | |
638 | } | |
639 | ||
640 | highlight_if_desired (); | |
641 | turn_off_insert (); | |
642 | ||
643 | /* Don't dare write in last column of bottom line, if AutoWrap, | |
644 | since that would scroll the whole screen on some terminals. */ | |
645 | ||
646 | if (AutoWrap | |
647 | && curY + 1 == SCREEN_HEIGHT (selected_screen) | |
648 | && (curX + len - (chars_wasted[curY] & 077) | |
649 | == SCREEN_WIDTH (selected_screen))) | |
650 | len --; | |
651 | ||
652 | cmplus (len); | |
653 | while (--len >= 0) | |
654 | { | |
655 | g = *string++; | |
656 | /* Check quickly for G beyond length of table. | |
657 | That implies it isn't an alias and is simple. */ | |
658 | if (g >= tlen) | |
659 | { | |
660 | simple: | |
661 | putc (g & 0xff, stdout); | |
662 | if (ferror (stdout)) | |
663 | clearerr (stdout); | |
664 | if (termscript) | |
665 | putc (g & 0xff, termscript); | |
666 | } | |
667 | else | |
668 | { | |
669 | /* G has an entry in Vglyph_table, | |
670 | so process any alias and then test for simpleness. */ | |
671 | while (GLYPH_ALIAS_P (tbase, tlen, g)) | |
672 | g = GLYPH_ALIAS (tbase, g); | |
673 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) | |
674 | goto simple; | |
675 | else | |
676 | { | |
677 | /* Here if G (or its definition as an alias) is not simple. */ | |
678 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), | |
679 | stdout); | |
680 | if (ferror (stdout)) | |
681 | clearerr (stdout); | |
682 | if (termscript) | |
683 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), | |
684 | termscript); | |
685 | } | |
686 | } | |
687 | } | |
688 | } | |
689 | ||
690 | /* If start is zero, insert blanks instead of a string at start */ | |
691 | ||
692 | insert_glyphs (start, len) | |
693 | register GLYPH *start; | |
694 | register int len; | |
695 | { | |
696 | char *buf; | |
697 | register GLYPH g; | |
698 | register int tlen = GLYPH_TABLE_LENGTH; | |
699 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; | |
700 | ||
701 | if (insert_glyphs_hook && ! SCREEN_IS_TERMCAP (updating_screen)) | |
702 | { | |
703 | (*insert_glyphs_hook) (start, len); | |
704 | return; | |
705 | } | |
706 | highlight_if_desired (); | |
707 | ||
708 | if (TS_ins_multi_chars) | |
709 | { | |
710 | buf = tparam (TS_ins_multi_chars, 0, 0, len); | |
711 | OUTPUT1 (buf); | |
712 | free (buf); | |
713 | if (start) | |
714 | write_glyphs (start, len); | |
715 | return; | |
716 | } | |
717 | ||
718 | turn_on_insert (); | |
719 | cmplus (len); | |
720 | while (--len >= 0) | |
721 | { | |
722 | OUTPUT1_IF (TS_ins_char); | |
723 | if (!start) | |
724 | g = SPACEGLYPH; | |
725 | else | |
726 | g = *start++; | |
727 | ||
728 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) | |
729 | { | |
730 | putc (g & 0xff, stdout); | |
731 | if (ferror (stdout)) | |
732 | clearerr (stdout); | |
733 | if (termscript) | |
734 | putc (g & 0xff, termscript); | |
735 | } | |
736 | else | |
737 | { | |
738 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), stdout); | |
739 | if (ferror (stdout)) | |
740 | clearerr (stdout); | |
741 | if (termscript) | |
742 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), | |
743 | termscript); | |
744 | } | |
745 | ||
746 | OUTPUT1_IF (TS_pad_inserted_char); | |
747 | } | |
748 | } | |
749 | ||
750 | delete_glyphs (n) | |
751 | register int n; | |
752 | { | |
753 | char *buf; | |
754 | register int i; | |
755 | ||
756 | if (delete_glyphs_hook && ! SCREEN_IS_TERMCAP (updating_screen)) | |
757 | { | |
758 | (*delete_glyphs_hook) (n); | |
759 | return; | |
760 | } | |
761 | ||
762 | if (delete_in_insert_mode) | |
763 | { | |
764 | turn_on_insert (); | |
765 | } | |
766 | else | |
767 | { | |
768 | turn_off_insert (); | |
769 | OUTPUT_IF (TS_delete_mode); | |
770 | } | |
771 | ||
772 | if (TS_del_multi_chars) | |
773 | { | |
774 | buf = tparam (TS_del_multi_chars, 0, 0, n); | |
775 | OUTPUT1 (buf); | |
776 | free (buf); | |
777 | } | |
778 | else | |
779 | for (i = 0; i < n; i++) | |
780 | OUTPUT1 (TS_del_char); | |
781 | if (!delete_in_insert_mode) | |
782 | OUTPUT_IF (TS_end_delete_mode); | |
783 | } | |
784 | \f | |
785 | /* Insert N lines at vpos VPOS. If N is negative, delete -N lines. */ | |
786 | ||
787 | ins_del_lines (vpos, n) | |
788 | int vpos, n; | |
789 | { | |
790 | char *multi = n > 0 ? TS_ins_multi_lines : TS_del_multi_lines; | |
791 | char *single = n > 0 ? TS_ins_line : TS_del_line; | |
792 | char *scroll = n > 0 ? TS_rev_scroll : TS_fwd_scroll; | |
793 | ||
794 | register int i = n > 0 ? n : -n; | |
795 | register char *buf; | |
796 | ||
797 | if (ins_del_lines_hook && ! SCREEN_IS_TERMCAP (updating_screen)) | |
798 | { | |
799 | (*ins_del_lines_hook) (vpos, n); | |
800 | return; | |
801 | } | |
802 | ||
803 | /* If the lines below the insertion are being pushed | |
804 | into the end of the window, this is the same as clearing; | |
805 | and we know the lines are already clear, since the matching | |
806 | deletion has already been done. So can ignore this. */ | |
807 | /* If the lines below the deletion are blank lines coming | |
808 | out of the end of the window, don't bother, | |
809 | as there will be a matching inslines later that will flush them. */ | |
810 | if (scroll_region_ok && vpos + i >= specified_window) | |
811 | return; | |
812 | if (!memory_below_screen && vpos + i >= SCREEN_HEIGHT (selected_screen)) | |
813 | return; | |
814 | ||
815 | if (multi) | |
816 | { | |
817 | raw_cursor_to (vpos, 0); | |
818 | background_highlight (); | |
819 | buf = tparam (multi, 0, 0, i); | |
820 | OUTPUT (buf); | |
821 | free (buf); | |
822 | } | |
823 | else if (single) | |
824 | { | |
825 | raw_cursor_to (vpos, 0); | |
826 | background_highlight (); | |
827 | while (--i >= 0) | |
828 | OUTPUT (single); | |
829 | if (TF_teleray) | |
830 | curX = 0; | |
831 | } | |
832 | else | |
833 | { | |
834 | set_scroll_region (vpos, specified_window); | |
835 | if (n < 0) | |
836 | raw_cursor_to (specified_window - 1, 0); | |
837 | else | |
838 | raw_cursor_to (vpos, 0); | |
839 | background_highlight (); | |
840 | while (--i >= 0) | |
841 | OUTPUTL (scroll, specified_window - vpos); | |
842 | set_scroll_region (0, specified_window); | |
843 | } | |
844 | ||
845 | if (TN_standout_width >= 0) | |
846 | { | |
847 | register lower_limit | |
848 | = (scroll_region_ok | |
849 | ? specified_window | |
850 | : SCREEN_HEIGHT (selected_screen)); | |
851 | ||
852 | if (n < 0) | |
853 | { | |
854 | bcopy (&chars_wasted[vpos - n], &chars_wasted[vpos], | |
855 | lower_limit - vpos + n); | |
856 | bzero (&chars_wasted[lower_limit + n], - n); | |
857 | } | |
858 | else | |
859 | { | |
860 | bcopy (&chars_wasted[vpos], ©buf[vpos], lower_limit - vpos - n); | |
861 | bcopy (©buf[vpos], &chars_wasted[vpos + n], | |
862 | lower_limit - vpos - n); | |
863 | bzero (&chars_wasted[vpos], n); | |
864 | } | |
865 | } | |
866 | if (!scroll_region_ok && memory_below_screen && n < 0) | |
867 | { | |
868 | cursor_to (SCREEN_HEIGHT (selected_screen) + n, 0); | |
869 | clear_to_end (); | |
870 | } | |
871 | } | |
872 | \f | |
873 | /* Compute cost of sending "str", in characters, | |
874 | not counting any line-dependent padding. */ | |
875 | ||
876 | int | |
877 | string_cost (str) | |
878 | char *str; | |
879 | { | |
880 | cost = 0; | |
881 | if (str) | |
882 | tputs (str, 0, evalcost); | |
883 | return cost; | |
884 | } | |
885 | ||
886 | /* Compute cost of sending "str", in characters, | |
887 | counting any line-dependent padding at one line. */ | |
888 | ||
889 | static int | |
890 | string_cost_one_line (str) | |
891 | char *str; | |
892 | { | |
893 | cost = 0; | |
894 | if (str) | |
895 | tputs (str, 1, evalcost); | |
896 | return cost; | |
897 | } | |
898 | ||
899 | /* Compute per line amount of line-dependent padding, | |
900 | in tenths of characters. */ | |
901 | ||
902 | int | |
903 | per_line_cost (str) | |
904 | register char *str; | |
905 | { | |
906 | cost = 0; | |
907 | if (str) | |
908 | tputs (str, 0, evalcost); | |
909 | cost = - cost; | |
910 | if (str) | |
911 | tputs (str, 10, evalcost); | |
912 | return cost; | |
913 | } | |
914 | ||
915 | #ifndef old | |
916 | /* char_ins_del_cost[n] is cost of inserting N characters. | |
917 | char_ins_del_cost[-n] is cost of deleting N characters. */ | |
918 | ||
919 | int *char_ins_del_vector; | |
920 | ||
921 | #define char_ins_del_cost(s) (&char_ins_del_vector[SCREEN_WIDTH ((s))]) | |
922 | #endif | |
923 | ||
924 | /* ARGSUSED */ | |
925 | static void | |
926 | calculate_ins_del_char_costs (screen) | |
927 | SCREEN_PTR screen; | |
928 | { | |
929 | int ins_startup_cost, del_startup_cost; | |
930 | int ins_cost_per_char, del_cost_per_char; | |
931 | register int i; | |
932 | register int *p; | |
933 | ||
934 | if (TS_ins_multi_chars) | |
935 | { | |
936 | ins_cost_per_char = 0; | |
937 | ins_startup_cost = string_cost_one_line (TS_ins_multi_chars); | |
938 | } | |
939 | else if (TS_ins_char || TS_pad_inserted_char | |
940 | || (TS_insert_mode && TS_end_insert_mode)) | |
941 | { | |
942 | ins_startup_cost = (30 * (string_cost (TS_insert_mode) | |
943 | + string_cost (TS_end_insert_mode))) / 100; | |
944 | ins_cost_per_char = (string_cost_one_line (TS_ins_char) | |
945 | + string_cost_one_line (TS_pad_inserted_char)); | |
946 | } | |
947 | else | |
948 | { | |
949 | ins_startup_cost = 9999; | |
950 | ins_cost_per_char = 0; | |
951 | } | |
952 | ||
953 | if (TS_del_multi_chars) | |
954 | { | |
955 | del_cost_per_char = 0; | |
956 | del_startup_cost = string_cost_one_line (TS_del_multi_chars); | |
957 | } | |
958 | else if (TS_del_char) | |
959 | { | |
960 | del_startup_cost = (string_cost (TS_delete_mode) | |
961 | + string_cost (TS_end_delete_mode)); | |
962 | if (delete_in_insert_mode) | |
963 | del_startup_cost /= 2; | |
964 | del_cost_per_char = string_cost_one_line (TS_del_char); | |
965 | } | |
966 | else | |
967 | { | |
968 | del_startup_cost = 9999; | |
969 | del_cost_per_char = 0; | |
970 | } | |
971 | ||
972 | /* Delete costs are at negative offsets */ | |
973 | p = &char_ins_del_cost (screen)[0]; | |
974 | for (i = SCREEN_WIDTH (selected_screen); --i >= 0;) | |
975 | *--p = (del_startup_cost += del_cost_per_char); | |
976 | ||
977 | /* Doing nothing is free */ | |
978 | p = &char_ins_del_cost (screen)[0]; | |
979 | *p++ = 0; | |
980 | ||
981 | /* Insert costs are at positive offsets */ | |
982 | for (i = SCREEN_WIDTH (screen); --i >= 0;) | |
983 | *p++ = (ins_startup_cost += ins_cost_per_char); | |
984 | } | |
985 | ||
986 | #ifdef HAVE_X_WINDOWS | |
987 | extern int x_screen_planes; | |
988 | #endif | |
989 | ||
990 | calculate_costs (screen) | |
991 | SCREEN_PTR screen; | |
992 | { | |
993 | register char *s = TS_set_scroll_region ? | |
994 | TS_set_scroll_region | |
995 | : TS_set_scroll_region_1; | |
996 | ||
997 | if (dont_calculate_costs) | |
998 | return; | |
999 | ||
1000 | #ifdef HAVE_X_WINDOWS | |
1001 | if (SCREEN_IS_X (screen)) | |
1002 | { | |
1003 | do_line_insertion_deletion_costs (screen, 0, ".5*", 0, ".5*", | |
1004 | 0, 0, x_screen_planes); | |
1005 | return; | |
1006 | } | |
1007 | #endif | |
1008 | ||
1009 | /* These variables are only used for terminal stuff. They are allocated | |
1010 | once for the terminal screen of X-windows emacs, but not used afterwards. | |
1011 | ||
1012 | char_ins_del_vector (i.e., char_ins_del_cost) isn't used because | |
1013 | X turns off char_ins_del_ok. | |
1014 | ||
1015 | chars_wasted and copybuf are only used here in term.c in cases where | |
1016 | the term hook isn't called. */ | |
1017 | ||
1018 | if (chars_wasted != 0) | |
1019 | chars_wasted = (char *) xrealloc (chars_wasted, SCREEN_HEIGHT (screen)); | |
1020 | else | |
1021 | chars_wasted = (char *) xmalloc (SCREEN_HEIGHT (screen)); | |
1022 | ||
1023 | if (copybuf != 0) | |
1024 | copybuf = (char *) xrealloc (copybuf, SCREEN_HEIGHT (screen)); | |
1025 | else | |
1026 | copybuf = (char *) xmalloc (SCREEN_HEIGHT (screen)); | |
1027 | ||
1028 | if (char_ins_del_vector != 0) | |
1029 | char_ins_del_vector | |
1030 | = (int *) xrealloc (char_ins_del_vector, | |
1031 | (sizeof (int) | |
1032 | + 2 * SCREEN_WIDTH (screen) * sizeof (int))); | |
1033 | else | |
1034 | char_ins_del_vector | |
1035 | = (int *) xmalloc (sizeof (int) | |
1036 | + 2 * SCREEN_WIDTH (screen) * sizeof (int)); | |
1037 | ||
1038 | bzero (chars_wasted, SCREEN_HEIGHT (screen)); | |
1039 | bzero (copybuf, SCREEN_HEIGHT (screen)); | |
1040 | bzero (char_ins_del_vector, (sizeof (int) | |
1041 | + 2 * SCREEN_WIDTH (screen) * sizeof (int))); | |
1042 | ||
1043 | if (s && (!TS_ins_line && !TS_del_line)) | |
1044 | do_line_insertion_deletion_costs (screen, | |
1045 | TS_rev_scroll, TS_ins_multi_lines, | |
1046 | TS_fwd_scroll, TS_del_multi_lines, | |
1047 | s, s, 1); | |
1048 | else | |
1049 | do_line_insertion_deletion_costs (screen, | |
1050 | TS_ins_line, TS_ins_multi_lines, | |
1051 | TS_del_line, TS_del_multi_lines, | |
1052 | 0, 0, 1); | |
1053 | ||
1054 | calculate_ins_del_char_costs (screen); | |
1055 | ||
1056 | /* Don't use TS_repeat if its padding is worse than sending the chars */ | |
1057 | if (TS_repeat && per_line_cost (TS_repeat) * baud_rate < 9000) | |
1058 | RPov = string_cost (TS_repeat); | |
1059 | else | |
1060 | RPov = SCREEN_WIDTH (screen) * 2; | |
1061 | ||
1062 | cmcostinit (); /* set up cursor motion costs */ | |
1063 | } | |
1064 | \f | |
1065 | term_init (terminal_type) | |
1066 | char *terminal_type; | |
1067 | { | |
1068 | char *area; | |
1069 | char **address = &area; | |
1070 | char buffer[2044]; | |
1071 | register char *p; | |
1072 | int status; | |
1073 | ||
1074 | extern char *tgetstr (); | |
1075 | ||
1076 | Wcm_clear (); | |
1077 | dont_calculate_costs = 0; | |
1078 | ||
1079 | status = tgetent (buffer, terminal_type); | |
1080 | if (status < 0) | |
1081 | fatal ("Cannot open termcap database file.\n"); | |
1082 | if (status == 0) | |
1083 | fatal ("Terminal type %s is not defined.\n", terminal_type); | |
1084 | ||
1085 | #ifdef TERMINFO | |
1086 | area = (char *) malloc (2044); | |
1087 | #else | |
1088 | area = (char *) malloc (strlen (buffer)); | |
1089 | #endif /* not TERMINFO */ | |
1090 | if (area == 0) | |
1091 | abort (); | |
1092 | ||
1093 | TS_ins_line = tgetstr ("al", address); | |
1094 | TS_ins_multi_lines = tgetstr ("AL", address); | |
1095 | TS_bell = tgetstr ("bl", address); | |
1096 | BackTab = tgetstr ("bt", address); | |
1097 | TS_clr_to_bottom = tgetstr ("cd", address); | |
1098 | TS_clr_line = tgetstr ("ce", address); | |
1099 | TS_clr_screen = tgetstr ("cl", address); | |
1100 | ColPosition = tgetstr ("ch", address); | |
1101 | AbsPosition = tgetstr ("cm", address); | |
1102 | CR = tgetstr ("cr", address); | |
1103 | TS_set_scroll_region = tgetstr ("cs", address); | |
1104 | TS_set_scroll_region_1 = tgetstr ("cS", address); | |
1105 | RowPosition = tgetstr ("cv", address); | |
1106 | TS_del_char = tgetstr ("dc", address); | |
1107 | TS_del_multi_chars = tgetstr ("DC", address); | |
1108 | TS_del_line = tgetstr ("dl", address); | |
1109 | TS_del_multi_lines = tgetstr ("DL", address); | |
1110 | TS_delete_mode = tgetstr ("dm", address); | |
1111 | TS_end_delete_mode = tgetstr ("ed", address); | |
1112 | TS_end_insert_mode = tgetstr ("ei", address); | |
1113 | Home = tgetstr ("ho", address); | |
1114 | TS_ins_char = tgetstr ("ic", address); | |
1115 | TS_ins_multi_chars = tgetstr ("IC", address); | |
1116 | TS_insert_mode = tgetstr ("im", address); | |
1117 | TS_pad_inserted_char = tgetstr ("ip", address); | |
1118 | TS_end_keypad_mode = tgetstr ("ke", address); | |
1119 | TS_keypad_mode = tgetstr ("ks", address); | |
1120 | LastLine = tgetstr ("ll", address); | |
1121 | Right = tgetstr ("nd", address); | |
1122 | Down = tgetstr ("do", address); | |
1123 | if (!Down) | |
1124 | Down = tgetstr ("nl", address); /* Obsolete name for "do" */ | |
1125 | #ifdef VMS | |
1126 | /* VMS puts a carriage return before each linefeed, | |
1127 | so it is not safe to use linefeeds. */ | |
1128 | if (Down && Down[0] == '\n' && Down[1] == '\0') | |
1129 | Down = 0; | |
1130 | #endif /* VMS */ | |
1131 | if (tgetflag ("bs")) | |
1132 | Left = "\b"; /* can't possibly be longer! */ | |
1133 | else /* (Actually, "bs" is obsolete...) */ | |
1134 | Left = tgetstr ("le", address); | |
1135 | if (!Left) | |
1136 | Left = tgetstr ("bc", address); /* Obsolete name for "le" */ | |
1137 | TS_pad_char = tgetstr ("pc", address); | |
1138 | TS_repeat = tgetstr ("rp", address); | |
1139 | TS_end_standout_mode = tgetstr ("se", address); | |
1140 | TS_fwd_scroll = tgetstr ("sf", address); | |
1141 | TS_standout_mode = tgetstr ("so", address); | |
1142 | TS_rev_scroll = tgetstr ("sr", address); | |
1143 | Wcm.cm_tab = tgetstr ("ta", address); | |
1144 | TS_end_termcap_modes = tgetstr ("te", address); | |
1145 | TS_termcap_modes = tgetstr ("ti", address); | |
1146 | Up = tgetstr ("up", address); | |
1147 | TS_visible_bell = tgetstr ("vb", address); | |
1148 | TS_end_visual_mode = tgetstr ("ve", address); | |
1149 | TS_visual_mode = tgetstr ("vs", address); | |
1150 | TS_set_window = tgetstr ("wi", address); | |
1151 | MultiUp = tgetstr ("UP", address); | |
1152 | MultiDown = tgetstr ("DO", address); | |
1153 | MultiLeft = tgetstr ("LE", address); | |
1154 | MultiRight = tgetstr ("RI", address); | |
1155 | ||
1156 | AutoWrap = tgetflag ("am"); | |
1157 | memory_below_screen = tgetflag ("db"); | |
1158 | TF_hazeltine = tgetflag ("hz"); | |
1159 | must_write_spaces = tgetflag ("in"); | |
1160 | meta_key = tgetflag ("km") || tgetflag ("MT"); | |
1161 | TF_insmode_motion = tgetflag ("mi"); | |
1162 | TF_standout_motion = tgetflag ("ms"); | |
1163 | TF_underscore = tgetflag ("ul"); | |
1164 | MagicWrap = tgetflag ("xn"); | |
1165 | TF_xs = tgetflag ("xs"); | |
1166 | TF_teleray = tgetflag ("xt"); | |
1167 | ||
1168 | /* Get screen size from system, or else from termcap. */ | |
1169 | get_screen_size (&SCREEN_WIDTH (selected_screen), | |
1170 | &SCREEN_HEIGHT (selected_screen)); | |
1171 | if (SCREEN_WIDTH (selected_screen) <= 0) | |
1172 | SCREEN_WIDTH (selected_screen) = tgetnum ("co"); | |
1173 | if (SCREEN_HEIGHT (selected_screen) <= 0) | |
1174 | SCREEN_HEIGHT (selected_screen) = tgetnum ("li"); | |
1175 | ||
1176 | min_padding_speed = tgetnum ("pb"); | |
1177 | TN_standout_width = tgetnum ("sg"); | |
1178 | TabWidth = tgetnum ("tw"); | |
1179 | ||
1180 | #ifdef VMS | |
1181 | /* These capabilities commonly use ^J. | |
1182 | I don't know why, but sending them on VMS does not work; | |
1183 | it causes following spaces to be lost, sometimes. | |
1184 | For now, the simplest fix is to avoid using these capabilities ever. */ | |
1185 | if (Down && Down[0] == '\n') | |
1186 | Down = 0; | |
1187 | #endif /* VMS */ | |
1188 | ||
1189 | if (!TS_bell) | |
1190 | TS_bell = "\07"; | |
1191 | ||
1192 | if (!TS_fwd_scroll) | |
1193 | TS_fwd_scroll = Down; | |
1194 | ||
1195 | PC = TS_pad_char ? *TS_pad_char : 0; | |
1196 | ||
1197 | if (TabWidth < 0) | |
1198 | TabWidth = 8; | |
1199 | ||
1200 | /* Turned off since /etc/termcap seems to have :ta= for most terminals | |
1201 | and newer termcap doc does not seem to say there is a default. | |
1202 | if (!Wcm.cm_tab) | |
1203 | Wcm.cm_tab = "\t"; | |
1204 | */ | |
1205 | ||
1206 | if (TS_standout_mode == 0) | |
1207 | { | |
1208 | TN_standout_width = tgetnum ("ug"); | |
1209 | TS_end_standout_mode = tgetstr ("ue", address); | |
1210 | TS_standout_mode = tgetstr ("us", address); | |
1211 | } | |
1212 | ||
1213 | if (TF_teleray) | |
1214 | { | |
1215 | Wcm.cm_tab = 0; | |
1216 | /* Teleray: most programs want a space in front of TS_standout_mode, | |
1217 | but Emacs can do without it (and give one extra column). */ | |
1218 | TS_standout_mode = "\033RD"; | |
1219 | TN_standout_width = 1; | |
1220 | /* But that means we cannot rely on ^M to go to column zero! */ | |
1221 | CR = 0; | |
1222 | /* LF can't be trusted either -- can alter hpos */ | |
1223 | /* if move at column 0 thru a line with TS_standout_mode */ | |
1224 | Down = 0; | |
1225 | } | |
1226 | ||
1227 | /* Special handling for certain terminal types known to need it */ | |
1228 | ||
1229 | if (!strcmp (terminal_type, "supdup")) | |
1230 | { | |
1231 | memory_below_screen = 1; | |
1232 | Wcm.cm_losewrap = 1; | |
1233 | } | |
1234 | if (!strncmp (terminal_type, "c10", 3) | |
1235 | || !strcmp (terminal_type, "perq")) | |
1236 | { | |
1237 | /* Supply a makeshift :wi string. | |
1238 | This string is not valid in general since it works only | |
1239 | for windows starting at the upper left corner; | |
1240 | but that is all Emacs uses. | |
1241 | ||
1242 | This string works only if the screen is using | |
1243 | the top of the video memory, because addressing is memory-relative. | |
1244 | So first check the :ti string to see if that is true. | |
1245 | ||
1246 | It would be simpler if the :wi string could go in the termcap | |
1247 | entry, but it can't because it is not fully valid. | |
1248 | If it were in the termcap entry, it would confuse other programs. */ | |
1249 | if (!TS_set_window) | |
1250 | { | |
1251 | p = TS_termcap_modes; | |
1252 | while (*p && strcmp (p, "\033v ")) | |
1253 | p++; | |
1254 | if (*p) | |
1255 | TS_set_window = "\033v%C %C %C %C "; | |
1256 | } | |
1257 | /* Termcap entry often fails to have :in: flag */ | |
1258 | must_write_spaces = 1; | |
1259 | /* :ti string typically fails to have \E^G! in it */ | |
1260 | /* This limits scope of insert-char to one line. */ | |
1261 | strcpy (area, TS_termcap_modes); | |
1262 | strcat (area, "\033\007!"); | |
1263 | TS_termcap_modes = area; | |
1264 | area += strlen (area) + 1; | |
1265 | p = AbsPosition; | |
1266 | /* Change all %+ parameters to %C, to handle | |
1267 | values above 96 correctly for the C100. */ | |
1268 | while (*p) | |
1269 | { | |
1270 | if (p[0] == '%' && p[1] == '+') | |
1271 | p[1] = 'C'; | |
1272 | p++; | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | ScreenRows = SCREEN_HEIGHT (selected_screen); | |
1277 | ScreenCols = SCREEN_WIDTH (selected_screen); | |
1278 | specified_window = SCREEN_HEIGHT (selected_screen); | |
1279 | ||
1280 | if (Wcm_init () == -1) /* can't do cursor motion */ | |
1281 | #ifdef VMS | |
1282 | fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ | |
1283 | It lacks the ability to position the cursor.\n\ | |
1284 | If that is not the actual type of terminal you have, use either the\n\ | |
1285 | DCL command `SET TERMINAL/DEVICE= ...' for DEC-compatible terminals,\n\ | |
1286 | or `define EMACS_TERM \"terminal type\"' for non-DEC terminals.\n", | |
1287 | terminal_type); | |
1288 | #else | |
1289 | fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ | |
1290 | It lacks the ability to position the cursor.\n\ | |
1291 | If that is not the actual type of terminal you have,\n\ | |
1292 | use the C-shell command `setenv TERM ...' to specify the correct type.\n\ | |
1293 | It may be necessary to do `unsetenv TERMCAP' as well.\n", | |
1294 | terminal_type); | |
1295 | #endif | |
1296 | if (SCREEN_HEIGHT (selected_screen) <= 0 | |
1297 | || SCREEN_WIDTH (selected_screen) <= 0) | |
1298 | fatal ("The screen size has not been specified."); | |
1299 | ||
1300 | delete_in_insert_mode | |
1301 | = TS_delete_mode && TS_insert_mode | |
1302 | && !strcmp (TS_delete_mode, TS_insert_mode); | |
1303 | ||
1304 | se_is_so = (TS_standout_mode | |
1305 | && TS_end_standout_mode | |
1306 | && !strcmp (TS_standout_mode, TS_end_standout_mode)); | |
1307 | ||
1308 | /* Remove width of standout marker from usable width of line */ | |
1309 | if (TN_standout_width > 0) | |
1310 | SCREEN_WIDTH (selected_screen) -= TN_standout_width; | |
1311 | ||
1312 | UseTabs = tabs_safe_p () && TabWidth == 8; | |
1313 | ||
1314 | scroll_region_ok | |
1315 | = (Wcm.cm_abs | |
1316 | && (TS_set_window || TS_set_scroll_region || TS_set_scroll_region_1)); | |
1317 | ||
1318 | line_ins_del_ok = (((TS_ins_line || TS_ins_multi_lines) | |
1319 | && (TS_del_line || TS_del_multi_lines)) | |
1320 | || (scroll_region_ok && TS_fwd_scroll && TS_rev_scroll)); | |
1321 | ||
1322 | char_ins_del_ok = ((TS_ins_char || TS_insert_mode | |
1323 | || TS_pad_inserted_char || TS_ins_multi_chars) | |
1324 | && (TS_del_char || TS_del_multi_chars)); | |
1325 | ||
1326 | fast_clear_end_of_line = TS_clr_line != 0; | |
1327 | ||
1328 | init_baud_rate (); | |
1329 | if (read_socket_hook) /* Baudrate is somewhat */ | |
1330 | /* meaningless in this case */ | |
1331 | baud_rate = 9600; | |
1332 | } | |
1333 | ||
1334 | /* VARARGS 1 */ | |
1335 | fatal (str, arg1, arg2) | |
1336 | { | |
1337 | fprintf (stderr, "emacs: "); | |
1338 | fprintf (stderr, str, arg1, arg2); | |
1339 | fflush (stderr); | |
1340 | exit (1); | |
1341 | } |