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Disable window title reporting by default, since it's a security
[u/mdw/putty] / terminal.c
CommitLineData
374330e2 1#include <stdio.h>
2#include <stdlib.h>
49bad831 3#include <ctype.h>
374330e2 4
e1c8e0ed 5#include <time.h>
c83de303 6#include <assert.h>
374330e2 7#include "putty.h"
887035a5 8#include "terminal.h"
9
10#define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
11#define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
12#define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
13#define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
14
15/* Product-order comparisons for rectangular block selection. */
16#define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
17#define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
18
19#define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
20#define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
374330e2 21
4eeb7d09 22#define VT52_PLUS
23
32874aea 24#define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
25#define CL_VT100 0x0002 /* VT100 */
26#define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
27#define CL_VT102 0x0008 /* VT102 */
28#define CL_VT220 0x0010 /* VT220 */
29#define CL_VT320 0x0020 /* VT320 */
30#define CL_VT420 0x0040 /* VT420 */
31#define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
32#define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
33#define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
34#define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
35#define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
e14a5a13 36
c9def1b8 37#define TM_VT100 (CL_ANSIMIN|CL_VT100)
38#define TM_VT100AVO (TM_VT100|CL_VT100AVO)
39#define TM_VT102 (TM_VT100AVO|CL_VT102)
40#define TM_VT220 (TM_VT102|CL_VT220)
41#define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
42#define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
43
44#define TM_PUTTY (0xFFFF)
e14a5a13 45
46#define compatibility(x) \
887035a5 47 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
48 term->termstate=TOPLEVEL; \
e14a5a13 49 break; \
50 }
c9def1b8 51#define compatibility2(x,y) \
887035a5 52 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
c9def1b8 54 break; \
55 }
e14a5a13 56
887035a5 57#define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
374330e2 58
4eeb7d09 59#define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
887035a5 60const wchar_t sel_nl[] = SEL_NL;
374330e2 61
62/*
3c7366f8 63 * Fetch the character at a particular position in a line array,
64 * for purposes of `wordtype'. The reason this isn't just a simple
65 * array reference is that if the character we find is UCSWIDE,
66 * then we must look one space further to the left.
67 */
68#define UCSGET(a, x) \
69 ( (x)>0 && ((a)[(x)] & (CHAR_MASK | CSET_MASK)) == UCSWIDE ? \
70 (a)[(x)-1] : (a)[(x)] )
71
72/*
374330e2 73 * Internal prototypes.
74 */
9547a2ac 75static unsigned long *resizeline(unsigned long *, int);
76static unsigned long *lineptr(Terminal *, int, int);
887035a5 77static void do_paint(Terminal *, Context, int);
78static void erase_lots(Terminal *, int, int, int);
79static void swap_screen(Terminal *, int, int, int);
80static void update_sbar(Terminal *);
81static void deselect(Terminal *);
82static void term_print_finish(Terminal *);
37d2a505 83#ifdef OPTIMISE_SCROLL
84static void scroll_display(Terminal *, int, int, int);
85#endif /* OPTIMISE_SCROLL */
374330e2 86
87/*
2371caac 88 * Resize a line to make it `cols' columns wide.
89 */
9547a2ac 90static unsigned long *resizeline(unsigned long *line, int cols)
2371caac 91{
92 int i, oldlen;
93 unsigned long lineattrs;
94
95 if (line[0] != (unsigned long)cols) {
96 /*
97 * This line is the wrong length, which probably means it
98 * hasn't been accessed since a resize. Resize it now.
99 */
100 oldlen = line[0];
101 lineattrs = line[oldlen + 1];
3d88e64d 102 line = sresize(line, 2 + cols, TTYPE);
2371caac 103 line[0] = cols;
104 for (i = oldlen; i < cols; i++)
105 line[i + 1] = ERASE_CHAR;
106 line[cols + 1] = lineattrs & LATTR_MODE;
107 }
108
109 return line;
110}
111
112/*
876e5d5e 113 * Get the number of lines in the scrollback.
114 */
115static int sblines(Terminal *term)
116{
117 int sblines = count234(term->scrollback);
118 if (term->cfg.erase_to_scrollback &&
119 term->alt_which && term->alt_screen) {
120 sblines += term->alt_sblines;
121 }
122 return sblines;
123}
124
125/*
c83de303 126 * Retrieve a line of the screen or of the scrollback, according to
127 * whether the y coordinate is non-negative or negative
128 * (respectively).
129 */
9547a2ac 130static unsigned long *lineptr(Terminal *term, int y, int lineno)
32874aea 131{
2371caac 132 unsigned long *line, *newline;
c83de303 133 tree234 *whichtree;
2371caac 134 int treeindex;
c83de303 135
136 if (y >= 0) {
887035a5 137 whichtree = term->screen;
c83de303 138 treeindex = y;
139 } else {
876e5d5e 140 int altlines = 0;
141 if (term->cfg.erase_to_scrollback &&
142 term->alt_which && term->alt_screen) {
143 altlines = term->alt_sblines;
144 }
145 if (y < -altlines) {
146 whichtree = term->scrollback;
147 treeindex = y + altlines + count234(term->scrollback);
148 } else {
149 whichtree = term->alt_screen;
150 treeindex = y + term->alt_sblines;
151 /* treeindex = y + count234(term->alt_screen); */
152 }
c83de303 153 }
154 line = index234(whichtree, treeindex);
155
156 /* We assume that we don't screw up and retrieve something out of range. */
c83de303 157 assert(line != NULL);
c83de303 158
887035a5 159 newline = resizeline(line, term->cols);
2371caac 160 if (newline != line) {
c83de303 161 delpos234(whichtree, treeindex);
2371caac 162 addpos234(whichtree, newline, treeindex);
04dcfaa2 163 line = newline;
c83de303 164 }
165
32874aea 166 return line + 1;
c83de303 167}
32874aea 168
887035a5 169#define lineptr(x) lineptr(term,x,__LINE__)
170
c83de303 171/*
374330e2 172 * Set up power-on settings for the terminal.
173 */
887035a5 174static void power_on(Terminal *term)
32874aea 175{
887035a5 176 term->curs.x = term->curs.y = 0;
177 term->alt_x = term->alt_y = 0;
178 term->savecurs.x = term->savecurs.y = 0;
179 term->alt_t = term->marg_t = 0;
180 if (term->rows != -1)
181 term->alt_b = term->marg_b = term->rows - 1;
374330e2 182 else
887035a5 183 term->alt_b = term->marg_b = 0;
184 if (term->cols != -1) {
374330e2 185 int i;
887035a5 186 for (i = 0; i < term->cols; i++)
187 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
374330e2 188 }
64734920 189 term->alt_om = term->dec_om = term->cfg.dec_om;
f278d6f8 190 term->alt_ins = term->insert = FALSE;
191 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
64734920 192 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
f278d6f8 193 term->alt_cset = term->cset = term->save_cset = 0;
194 term->alt_utf = term->utf = term->save_utf = 0;
195 term->utf_state = 0;
196 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
197 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
887035a5 198 term->rvideo = 0;
199 term->in_vbell = FALSE;
200 term->cursor_on = 1;
201 term->big_cursor = 0;
202 term->save_attr = term->curr_attr = ATTR_DEFAULT;
203 term->term_editing = term->term_echoing = FALSE;
64734920 204 term->app_cursor_keys = term->cfg.app_cursor;
205 term->app_keypad_keys = term->cfg.app_keypad;
206 term->use_bce = term->cfg.bce;
207 term->blink_is_real = term->cfg.blinktext;
887035a5 208 term->erase_char = ERASE_CHAR;
209 term->alt_which = 0;
210 term_print_finish(term);
374330e2 211 {
212 int i;
213 for (i = 0; i < 256; i++)
64734920 214 term->wordness[i] = term->cfg.wordness[i];
374330e2 215 }
887035a5 216 if (term->screen) {
217 swap_screen(term, 1, FALSE, FALSE);
218 erase_lots(term, FALSE, TRUE, TRUE);
219 swap_screen(term, 0, FALSE, FALSE);
220 erase_lots(term, FALSE, TRUE, TRUE);
374330e2 221 }
222}
223
224/*
225 * Force a screen update.
226 */
887035a5 227void term_update(Terminal *term)
32874aea 228{
374330e2 229 Context ctx;
a8327734 230 ctx = get_ctx(term->frontend);
374330e2 231 if (ctx) {
887035a5 232 int need_sbar_update = term->seen_disp_event;
64734920 233 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
887035a5 234 term->disptop = 0; /* return to main screen */
235 term->seen_disp_event = 0;
4f892125 236 need_sbar_update = TRUE;
cabfd08c 237 }
4f892125 238 if (need_sbar_update)
887035a5 239 update_sbar(term);
240 do_paint(term, ctx, TRUE);
a8327734 241 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
32874aea 242 free_ctx(ctx);
374330e2 243 }
244}
245
246/*
2cb50250 247 * Called from front end when a keypress occurs, to trigger
248 * anything magical that needs to happen in that situation.
249 */
887035a5 250void term_seen_key_event(Terminal *term)
2cb50250 251{
252 /*
253 * On any keypress, clear the bell overload mechanism
254 * completely, on the grounds that large numbers of
255 * beeps coming from deliberate key action are likely
256 * to be intended (e.g. beeps from filename completion
257 * blocking repeatedly).
258 */
887035a5 259 term->beep_overloaded = FALSE;
260 while (term->beephead) {
261 struct beeptime *tmp = term->beephead;
262 term->beephead = tmp->next;
2cb50250 263 sfree(tmp);
264 }
887035a5 265 term->beeptail = NULL;
266 term->nbeeps = 0;
2cb50250 267
268 /*
269 * Reset the scrollback on keypress, if we're doing that.
270 */
64734920 271 if (term->cfg.scroll_on_key) {
887035a5 272 term->disptop = 0; /* return to main screen */
273 term->seen_disp_event = 1;
2cb50250 274 }
275}
276
277/*
374330e2 278 * Same as power_on(), but an external function.
279 */
887035a5 280void term_pwron(Terminal *term)
32874aea 281{
887035a5 282 power_on(term);
b9d7bcad 283 if (term->ldisc) /* cause ldisc to notice changes */
284 ldisc_send(term->ldisc, NULL, 0, 0);
374330e2 285 fix_cpos;
887035a5 286 term->disptop = 0;
287 deselect(term);
288 term_update(term);
374330e2 289}
290
291/*
0d2086c5 292 * When the user reconfigures us, we need to check the forbidden-
b44b307a 293 * alternate-screen config option, disable raw mouse mode if the
294 * user has disabled mouse reporting, and abandon a print job if
295 * the user has disabled printing.
0d2086c5 296 */
64734920 297void term_reconfig(Terminal *term, Config *cfg)
0d2086c5 298{
64734920 299 /*
300 * Before adopting the new config, check all those terminal
301 * settings which control power-on defaults; and if they've
302 * changed, we will modify the current state as well as the
303 * default one. The full list is: Auto wrap mode, DEC Origin
304 * Mode, BCE, blinking text, character classes.
305 */
306 int reset_wrap, reset_decom, reset_bce, reset_blink, reset_charclass;
307 int i;
308
309 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
310 reset_decom = (term->cfg.dec_om != cfg->dec_om);
311 reset_bce = (term->cfg.bce != cfg->bce);
312 reset_blink = (term->cfg.blinktext != cfg->blinktext);
313 reset_charclass = 0;
314 for (i = 0; i < lenof(term->cfg.wordness); i++)
315 if (term->cfg.wordness[i] != cfg->wordness[i])
316 reset_charclass = 1;
317
318 term->cfg = *cfg; /* STRUCTURE COPY */
319
320 if (reset_wrap)
321 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
322 if (reset_decom)
323 term->alt_om = term->dec_om = term->cfg.dec_om;
324 if (reset_bce)
325 term->use_bce = term->cfg.bce;
326 if (reset_blink)
327 term->blink_is_real = term->cfg.blinktext;
328 if (reset_charclass)
329 for (i = 0; i < 256; i++)
330 term->wordness[i] = term->cfg.wordness[i];
331
332 if (term->cfg.no_alt_screen)
887035a5 333 swap_screen(term, 0, FALSE, FALSE);
64734920 334 if (term->cfg.no_mouse_rep) {
887035a5 335 term->xterm_mouse = 0;
a8327734 336 set_raw_mouse_mode(term->frontend, 0);
c0d36a72 337 }
64734920 338 if (term->cfg.no_remote_charset) {
887035a5 339 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
340 term->sco_acs = term->alt_sco_acs = 0;
341 term->utf = 0;
0d2086c5 342 }
64734920 343 if (!*term->cfg.printer) {
887035a5 344 term_print_finish(term);
b44b307a 345 }
0d2086c5 346}
347
348/*
374330e2 349 * Clear the scrollback.
350 */
887035a5 351void term_clrsb(Terminal *term)
32874aea 352{
4facdf84 353 unsigned long *line;
887035a5 354 term->disptop = 0;
355 while ((line = delpos234(term->scrollback, 0)) != NULL) {
4facdf84 356 sfree(line);
357 }
4683b9b6 358 term->tempsblines = 0;
876e5d5e 359 term->alt_sblines = 0;
887035a5 360 update_sbar(term);
374330e2 361}
362
363/*
364 * Initialise the terminal.
365 */
21d2b241 366Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
367 void *frontend)
32874aea 368{
887035a5 369 Terminal *term;
370
371 /*
372 * Allocate a new Terminal structure and initialise the fields
373 * that need it.
374 */
3d88e64d 375 term = snew(Terminal);
a8327734 376 term->frontend = frontend;
21d2b241 377 term->ucsdata = ucsdata;
64734920 378 term->cfg = *mycfg; /* STRUCTURE COPY */
a8327734 379 term->logctx = NULL;
887035a5 380 term->compatibility_level = TM_PUTTY;
381 strcpy(term->id_string, "\033[?6c");
382 term->last_blink = term->last_tblink = 0;
383 term->paste_buffer = NULL;
c80a3e8c 384 term->paste_len = 0;
887035a5 385 term->last_paste = 0;
386 bufchain_init(&term->inbuf);
387 bufchain_init(&term->printer_buf);
f278d6f8 388 term->printing = term->only_printing = FALSE;
389 term->print_job = NULL;
390 term->vt52_mode = FALSE;
391 term->cr_lf_return = FALSE;
392 term->seen_disp_event = FALSE;
b9d7bcad 393 term->xterm_mouse = term->mouse_is_down = FALSE;
f278d6f8 394 term->reset_132 = FALSE;
395 term->blinker = term->tblinker = 0;
396 term->has_focus = 1;
397 term->repeat_off = FALSE;
398 term->termstate = TOPLEVEL;
399 term->selstate = NO_SELECTION;
093a75b8 400 term->curstype = 0;
887035a5 401
402 term->screen = term->alt_screen = term->scrollback = NULL;
4683b9b6 403 term->tempsblines = 0;
876e5d5e 404 term->alt_sblines = 0;
887035a5 405 term->disptop = 0;
406 term->disptext = term->dispcurs = NULL;
407 term->tabs = NULL;
408 deselect(term);
409 term->rows = term->cols = -1;
410 power_on(term);
411 term->beephead = term->beeptail = NULL;
341eb978 412#ifdef OPTIMISE_SCROLL
413 term->scrollhead = term->scrolltail = NULL;
414#endif /* OPTIMISE_SCROLL */
887035a5 415 term->nbeeps = 0;
416 term->lastbeep = FALSE;
417 term->beep_overloaded = FALSE;
2647b103 418 term->attr_mask = 0xffffffff;
51470298 419 term->resize_fn = NULL;
420 term->resize_ctx = NULL;
74aca06d 421 term->in_term_out = FALSE;
887035a5 422
423 return term;
374330e2 424}
425
fabd1805 426void term_free(Terminal *term)
427{
428 unsigned long *line;
429 struct beeptime *beep;
430
431 while ((line = delpos234(term->scrollback, 0)) != NULL)
432 sfree(line);
433 freetree234(term->scrollback);
434 while ((line = delpos234(term->screen, 0)) != NULL)
435 sfree(line);
436 freetree234(term->screen);
437 while ((line = delpos234(term->alt_screen, 0)) != NULL)
438 sfree(line);
439 freetree234(term->alt_screen);
440 sfree(term->disptext);
441 while (term->beephead) {
442 beep = term->beephead;
443 term->beephead = beep->next;
444 sfree(beep);
445 }
446 bufchain_clear(&term->inbuf);
447 if(term->print_job)
448 printer_finish_job(term->print_job);
449 bufchain_clear(&term->printer_buf);
450 sfree(term->paste_buffer);
451 sfree(term);
452}
453
374330e2 454/*
455 * Set up the terminal for a given size.
456 */
887035a5 457void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
32874aea 458{
2d466ffd 459 tree234 *newalt;
460 unsigned long *newdisp, *line;
461 int i, j;
c83de303 462 int sblen;
887035a5 463 int save_alt_which = term->alt_which;
d6832394 464
887035a5 465 if (newrows == term->rows && newcols == term->cols &&
466 newsavelines == term->savelines)
374330e2 467 return; /* nothing to do */
468
887035a5 469 deselect(term);
470 swap_screen(term, 0, FALSE, FALSE);
d6832394 471
887035a5 472 term->alt_t = term->marg_t = 0;
473 term->alt_b = term->marg_b = newrows - 1;
374330e2 474
887035a5 475 if (term->rows == -1) {
476 term->scrollback = newtree234(NULL);
477 term->screen = newtree234(NULL);
4683b9b6 478 term->tempsblines = 0;
887035a5 479 term->rows = 0;
c83de303 480 }
481
482 /*
483 * Resize the screen and scrollback. We only need to shift
484 * lines around within our data structures, because lineptr()
485 * will take care of resizing each individual line if
486 * necessary. So:
487 *
4683b9b6 488 * - If the new screen is longer, we shunt lines in from temporary
489 * scrollback if possible, otherwise we add new blank lines at
490 * the bottom.
491 *
492 * - If the new screen is shorter, we remove any blank lines at
493 * the bottom if possible, otherwise shunt lines above the cursor
494 * to scrollback if possible, otherwise delete lines below the
495 * cursor.
c83de303 496 *
497 * - Then, if the new scrollback length is less than the
498 * amount of scrollback we actually have, we must throw some
499 * away.
500 */
887035a5 501 sblen = count234(term->scrollback);
cdd6c586 502 /* Do this loop to expand the screen if newrows > rows */
4683b9b6 503 assert(term->rows == count234(term->screen));
504 while (term->rows < newrows) {
505 if (term->tempsblines > 0) {
506 /* Insert a line from the scrollback at the top of the screen. */
507 assert(sblen >= term->tempsblines);
887035a5 508 line = delpos234(term->scrollback, --sblen);
4683b9b6 509 term->tempsblines -= 1;
510 addpos234(term->screen, line, 0);
511 term->curs.y += 1;
512 term->savecurs.y += 1;
32874aea 513 } else {
4683b9b6 514 /* Add a new blank line at the bottom of the screen. */
3d88e64d 515 line = snewn(newcols + 2, TTYPE);
32874aea 516 line[0] = newcols;
37ca32ed 517 for (j = 0; j < newcols; j++)
32874aea 518 line[j + 1] = ERASE_CHAR;
8ceabe90 519 line[newcols + 1] = LATTR_NORM;
4683b9b6 520 addpos234(term->screen, line, count234(term->screen));
32874aea 521 }
4683b9b6 522 term->rows += 1;
cdd6c586 523 }
524 /* Do this loop to shrink the screen if newrows < rows */
4683b9b6 525 while (term->rows > newrows) {
526 if (term->curs.y < term->rows - 1) {
527 /* delete bottom row, unless it contains the cursor */
528 sfree(delpos234(term->screen, term->rows - 1));
529 } else {
530 /* push top row to scrollback */
531 line = delpos234(term->screen, 0);
532 addpos234(term->scrollback, line, sblen++);
533 term->tempsblines += 1;
534 term->curs.y -= 1;
535 term->savecurs.y -= 1;
536 }
537 term->rows -= 1;
c83de303 538 }
4683b9b6 539 assert(term->rows == newrows);
887035a5 540 assert(count234(term->screen) == newrows);
4683b9b6 541
542 /* Delete any excess lines from the scrollback. */
c83de303 543 while (sblen > newsavelines) {
887035a5 544 line = delpos234(term->scrollback, 0);
c83de303 545 sfree(line);
546 sblen--;
c9def1b8 547 }
4683b9b6 548 if (sblen < term->tempsblines)
549 term->tempsblines = sblen;
887035a5 550 assert(count234(term->scrollback) <= newsavelines);
4683b9b6 551 assert(count234(term->scrollback) >= term->tempsblines);
887035a5 552 term->disptop = 0;
374330e2 553
4683b9b6 554 /* Make a new displayed text buffer. */
3d88e64d 555 newdisp = snewn(newrows * (newcols + 1), TTYPE);
32874aea 556 for (i = 0; i < newrows * (newcols + 1); i++)
374330e2 557 newdisp[i] = ATTR_INVALID;
887035a5 558 sfree(term->disptext);
559 term->disptext = newdisp;
560 term->dispcurs = NULL;
374330e2 561
4683b9b6 562 /* Make a new alternate screen. */
4facdf84 563 newalt = newtree234(NULL);
32874aea 564 for (i = 0; i < newrows; i++) {
3d88e64d 565 line = snewn(newcols + 2, TTYPE);
c83de303 566 line[0] = newcols;
37ca32ed 567 for (j = 0; j < newcols; j++)
887035a5 568 line[j + 1] = term->erase_char;
37ca32ed 569 line[newcols + 1] = LATTR_NORM;
4facdf84 570 addpos234(newalt, line, i);
571 }
887035a5 572 if (term->alt_screen) {
573 while (NULL != (line = delpos234(term->alt_screen, 0)))
4facdf84 574 sfree(line);
887035a5 575 freetree234(term->alt_screen);
4facdf84 576 }
887035a5 577 term->alt_screen = newalt;
876e5d5e 578 term->alt_sblines = 0;
374330e2 579
3d88e64d 580 term->tabs = sresize(term->tabs, newcols, unsigned char);
374330e2 581 {
582 int i;
887035a5 583 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
584 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
374330e2 585 }
586
4683b9b6 587 /* Check that the cursor positions are still valid. */
588 if (term->savecurs.y < 0)
589 term->savecurs.y = 0;
590 if (term->savecurs.y >= newrows)
591 term->savecurs.y = newrows - 1;
887035a5 592 if (term->curs.y < 0)
593 term->curs.y = 0;
594 if (term->curs.y >= newrows)
595 term->curs.y = newrows - 1;
596 if (term->curs.x >= newcols)
597 term->curs.x = newcols - 1;
598 term->alt_x = term->alt_y = 0;
599 term->wrapnext = term->alt_wnext = FALSE;
600
601 term->rows = newrows;
602 term->cols = newcols;
603 term->savelines = newsavelines;
374330e2 604 fix_cpos;
605
887035a5 606 swap_screen(term, save_alt_which, FALSE, FALSE);
d6832394 607
887035a5 608 update_sbar(term);
609 term_update(term);
51470298 610 if (term->resize_fn)
611 term->resize_fn(term->resize_ctx, term->cols, term->rows);
612}
613
614/*
615 * Hand a function and context pointer to the terminal which it can
616 * use to notify a back end of resizes.
617 */
618void term_provide_resize_fn(Terminal *term,
619 void (*resize_fn)(void *, int, int),
620 void *resize_ctx)
621{
622 term->resize_fn = resize_fn;
623 term->resize_ctx = resize_ctx;
624 if (term->cols > 0 && term->rows > 0)
625 resize_fn(resize_ctx, term->cols, term->rows);
374330e2 626}
627
876e5d5e 628/* Find the bottom line on the screen that has any content.
629 * If only the top line has content, returns 0.
630 * If no lines have content, return -1.
631 */
632static int find_last_nonempty_line(Terminal * term, tree234 * screen)
633{
634 int i;
635 for (i = count234(screen) - 1; i >= 0; i--) {
636 unsigned long *line = index234(screen, i);
637 int j;
638 int cols = line[0];
639 for (j = 0; j < cols; j++) {
640 if (line[j + 1] != term->erase_char) break;
641 }
642 if (j != cols) break;
643 }
644 return i;
645}
646
374330e2 647/*
8f9b6a1a 648 * Swap screens. If `reset' is TRUE and we have been asked to
649 * switch to the alternate screen, we must bring most of its
650 * configuration from the main screen and erase the contents of the
651 * alternate screen completely. (This is even true if we're already
652 * on it! Blame xterm.)
374330e2 653 */
887035a5 654static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
32874aea 655{
374330e2 656 int t;
4facdf84 657 tree234 *ttr;
374330e2 658
8f9b6a1a 659 if (!which)
660 reset = FALSE; /* do no weird resetting if which==0 */
661
887035a5 662 if (which != term->alt_which) {
663 term->alt_which = which;
8f9b6a1a 664
887035a5 665 ttr = term->alt_screen;
666 term->alt_screen = term->screen;
667 term->screen = ttr;
876e5d5e 668 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
887035a5 669 t = term->curs.x;
8f9b6a1a 670 if (!reset && !keep_cur_pos)
887035a5 671 term->curs.x = term->alt_x;
672 term->alt_x = t;
673 t = term->curs.y;
8f9b6a1a 674 if (!reset && !keep_cur_pos)
887035a5 675 term->curs.y = term->alt_y;
676 term->alt_y = t;
677 t = term->marg_t;
678 if (!reset) term->marg_t = term->alt_t;
679 term->alt_t = t;
680 t = term->marg_b;
681 if (!reset) term->marg_b = term->alt_b;
682 term->alt_b = t;
683 t = term->dec_om;
684 if (!reset) term->dec_om = term->alt_om;
685 term->alt_om = t;
686 t = term->wrap;
687 if (!reset) term->wrap = term->alt_wrap;
688 term->alt_wrap = t;
689 t = term->wrapnext;
690 if (!reset) term->wrapnext = term->alt_wnext;
691 term->alt_wnext = t;
692 t = term->insert;
693 if (!reset) term->insert = term->alt_ins;
694 term->alt_ins = t;
695 t = term->cset;
696 if (!reset) term->cset = term->alt_cset;
697 term->alt_cset = t;
698 t = term->utf;
699 if (!reset) term->utf = term->alt_utf;
700 term->alt_utf = t;
701 t = term->sco_acs;
702 if (!reset) term->sco_acs = term->alt_sco_acs;
703 term->alt_sco_acs = t;
8f9b6a1a 704 }
374330e2 705
887035a5 706 if (reset && term->screen) {
8f9b6a1a 707 /*
708 * Yes, this _is_ supposed to honour background-colour-erase.
709 */
887035a5 710 erase_lots(term, FALSE, TRUE, TRUE);
8f9b6a1a 711 }
712
713 /*
714 * This might not be possible if we're called during
715 * initialisation.
716 */
887035a5 717 if (term->screen)
8f9b6a1a 718 fix_cpos;
374330e2 719}
720
721/*
374330e2 722 * Update the scroll bar.
723 */
887035a5 724static void update_sbar(Terminal *term)
32874aea 725{
876e5d5e 726 int nscroll = sblines(term);
a8327734 727 set_sbar(term->frontend, nscroll + term->rows,
728 nscroll + term->disptop, term->rows);
374330e2 729}
730
731/*
732 * Check whether the region bounded by the two pointers intersects
733 * the scroll region, and de-select the on-screen selection if so.
734 */
887035a5 735static void check_selection(Terminal *term, pos from, pos to)
32874aea 736{
887035a5 737 if (poslt(from, term->selend) && poslt(term->selstart, to))
738 deselect(term);
374330e2 739}
740
741/*
742 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
743 * for backward.) `sb' is TRUE if the scrolling is permitted to
744 * affect the scrollback buffer.
a4450583 745 *
746 * NB this function invalidates all pointers into lines of the
747 * screen data structures. In particular, you MUST call fix_cpos
748 * after calling scroll() and before doing anything else that
749 * uses the cpos shortcut pointer.
374330e2 750 */
887035a5 751static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
32874aea 752{
4facdf84 753 unsigned long *line, *line2;
7c66d7d9 754 int i, seltop, olddisptop, shift;
c9def1b8 755
887035a5 756 if (topline != 0 || term->alt_which != 0)
4facdf84 757 sb = FALSE;
758
7c66d7d9 759 olddisptop = term->disptop;
760 shift = lines;
4facdf84 761 if (lines < 0) {
762 while (lines < 0) {
887035a5 763 line = delpos234(term->screen, botline);
764 line = resizeline(line, term->cols);
765 for (i = 0; i < term->cols; i++)
766 line[i + 1] = term->erase_char;
767 line[term->cols + 1] = 0;
768 addpos234(term->screen, line, topline);
769
770 if (term->selstart.y >= topline && term->selstart.y <= botline) {
771 term->selstart.y++;
772 if (term->selstart.y > botline) {
5a8afc78 773 term->selstart.y = botline + 1;
887035a5 774 term->selstart.x = 0;
c9def1b8 775 }
c9def1b8 776 }
887035a5 777 if (term->selend.y >= topline && term->selend.y <= botline) {
778 term->selend.y++;
779 if (term->selend.y > botline) {
5a8afc78 780 term->selend.y = botline + 1;
887035a5 781 term->selend.x = 0;
c9def1b8 782 }
c9def1b8 783 }
c9def1b8 784
4facdf84 785 lines++;
c9def1b8 786 }
374330e2 787 } else {
4facdf84 788 while (lines > 0) {
887035a5 789 line = delpos234(term->screen, topline);
790 if (sb && term->savelines > 0) {
4683b9b6 791 int sblen = count234(term->scrollback);
4facdf84 792 /*
793 * We must add this line to the scrollback. We'll
794 * remove a line from the top of the scrollback to
795 * replace it, or allocate a new one if the
796 * scrollback isn't full.
797 */
887035a5 798 if (sblen == term->savelines) {
799 sblen--, line2 = delpos234(term->scrollback, 0);
c83de303 800 } else {
3d88e64d 801 line2 = snewn(term->cols + 2, TTYPE);
887035a5 802 line2[0] = term->cols;
4683b9b6 803 term->tempsblines += 1;
c83de303 804 }
887035a5 805 addpos234(term->scrollback, line, sblen);
4facdf84 806 line = line2;
a792432e 807
808 /*
809 * If the user is currently looking at part of the
810 * scrollback, and they haven't enabled any options
811 * that are going to reset the scrollback as a
812 * result of this movement, then the chances are
813 * they'd like to keep looking at the same line. So
814 * we move their viewpoint at the same rate as the
815 * scroll, at least until their viewpoint hits the
816 * top end of the scrollback buffer, at which point
817 * we don't have the choice any more.
818 *
819 * Thanks to Jan Holmen Holsten for the idea and
820 * initial implementation.
821 */
887035a5 822 if (term->disptop > -term->savelines && term->disptop < 0)
823 term->disptop--;
4facdf84 824 }
887035a5 825 line = resizeline(line, term->cols);
826 for (i = 0; i < term->cols; i++)
827 line[i + 1] = term->erase_char;
37ca32ed 828 line[term->cols + 1] = LATTR_NORM;
887035a5 829 addpos234(term->screen, line, botline);
4facdf84 830
a792432e 831 /*
832 * If the selection endpoints move into the scrollback,
833 * we keep them moving until they hit the top. However,
834 * of course, if the line _hasn't_ moved into the
835 * scrollback then we don't do this, and cut them off
836 * at the top of the scroll region.
d48db8b4 837 *
838 * This applies to selstart and selend (for an existing
839 * selection), and also selanchor (for one being
840 * selected as we speak).
a792432e 841 */
887035a5 842 seltop = sb ? -term->savelines : topline;
843
844 if (term->selstart.y >= seltop &&
845 term->selstart.y <= botline) {
846 term->selstart.y--;
847 if (term->selstart.y < seltop) {
848 term->selstart.y = seltop;
849 term->selstart.x = 0;
4facdf84 850 }
851 }
887035a5 852 if (term->selend.y >= seltop && term->selend.y <= botline) {
853 term->selend.y--;
854 if (term->selend.y < seltop) {
855 term->selend.y = seltop;
856 term->selend.x = 0;
4facdf84 857 }
858 }
887035a5 859 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
860 term->selanchor.y--;
861 if (term->selanchor.y < seltop) {
862 term->selanchor.y = seltop;
863 term->selanchor.x = 0;
d48db8b4 864 }
865 }
4facdf84 866
867 lines--;
c9def1b8 868 }
374330e2 869 }
7c66d7d9 870#ifdef OPTIMISE_SCROLL
871 shift += term->disptop - olddisptop;
872 if (shift < term->rows && shift > -term->rows && shift != 0)
873 scroll_display(term, topline, botline, shift);
874#endif /* OPTIMISE_SCROLL */
374330e2 875}
876
37d2a505 877#ifdef OPTIMISE_SCROLL
878/*
341eb978 879 * Add a scroll of a region on the screen into the pending scroll list.
880 * `lines' is +ve for scrolling forward, -ve for backward.
881 *
882 * If the scroll is on the same area as the last scroll in the list,
883 * merge them.
884 */
03f60a62 885static void save_scroll(Terminal *term, int topline, int botline, int lines)
341eb978 886{
887 struct scrollregion *newscroll;
888 if (term->scrolltail &&
889 term->scrolltail->topline == topline &&
890 term->scrolltail->botline == botline) {
891 term->scrolltail->lines += lines;
892 } else {
3d88e64d 893 newscroll = snew(struct scrollregion);
341eb978 894 newscroll->topline = topline;
895 newscroll->botline = botline;
896 newscroll->lines = lines;
897 newscroll->next = NULL;
898
899 if (!term->scrollhead)
900 term->scrollhead = newscroll;
901 else
902 term->scrolltail->next = newscroll;
903 term->scrolltail = newscroll;
904 }
905}
906
907/*
37d2a505 908 * Scroll the physical display, and our conception of it in disptext.
909 */
910static void scroll_display(Terminal *term, int topline, int botline, int lines)
911{
912 unsigned long *start, *end;
913 int distance, size, i;
914
915 start = term->disptext + topline * (term->cols + 1);
916 end = term->disptext + (botline + 1) * (term->cols + 1);
917 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
918 size = end - start - distance;
919 if (lines > 0) {
920 memmove(start, start + distance, size * TSIZE);
7c66d7d9 921 if (term->dispcurs >= start + distance &&
922 term->dispcurs <= start + distance + size)
923 term->dispcurs -= distance;
37d2a505 924 for (i = 0; i < distance; i++)
925 (start + size)[i] |= ATTR_INVALID;
926 } else {
927 memmove(start + distance, start, size * TSIZE);
7c66d7d9 928 if (term->dispcurs >= start && term->dispcurs <= start + size)
929 term->dispcurs += distance;
37d2a505 930 for (i = 0; i < distance; i++)
931 start[i] |= ATTR_INVALID;
932 }
341eb978 933 save_scroll(term, topline, botline, lines);
37d2a505 934}
935#endif /* OPTIMISE_SCROLL */
936
374330e2 937/*
938 * Move the cursor to a given position, clipping at boundaries. We
939 * may or may not want to clip at the scroll margin: marg_clip is 0
940 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
941 * even _being_ outside the margins.
942 */
887035a5 943static void move(Terminal *term, int x, int y, int marg_clip)
32874aea 944{
374330e2 945 if (x < 0)
946 x = 0;
887035a5 947 if (x >= term->cols)
948 x = term->cols - 1;
374330e2 949 if (marg_clip) {
887035a5 950 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
951 y < term->marg_t)
952 y = term->marg_t;
953 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
954 y > term->marg_b)
955 y = term->marg_b;
374330e2 956 }
957 if (y < 0)
958 y = 0;
887035a5 959 if (y >= term->rows)
960 y = term->rows - 1;
961 term->curs.x = x;
962 term->curs.y = y;
374330e2 963 fix_cpos;
887035a5 964 term->wrapnext = FALSE;
374330e2 965}
966
967/*
968 * Save or restore the cursor and SGR mode.
969 */
887035a5 970static void save_cursor(Terminal *term, int save)
32874aea 971{
374330e2 972 if (save) {
887035a5 973 term->savecurs = term->curs;
974 term->save_attr = term->curr_attr;
975 term->save_cset = term->cset;
976 term->save_utf = term->utf;
977 term->save_wnext = term->wrapnext;
978 term->save_csattr = term->cset_attr[term->cset];
979 term->save_sco_acs = term->sco_acs;
374330e2 980 } else {
887035a5 981 term->curs = term->savecurs;
c9def1b8 982 /* Make sure the window hasn't shrunk since the save */
887035a5 983 if (term->curs.x >= term->cols)
984 term->curs.x = term->cols - 1;
985 if (term->curs.y >= term->rows)
986 term->curs.y = term->rows - 1;
987
988 term->curr_attr = term->save_attr;
989 term->cset = term->save_cset;
990 term->utf = term->save_utf;
991 term->wrapnext = term->save_wnext;
8c028e65 992 /*
993 * wrapnext might reset to False if the x position is no
994 * longer at the rightmost edge.
995 */
887035a5 996 if (term->wrapnext && term->curs.x < term->cols-1)
997 term->wrapnext = FALSE;
998 term->cset_attr[term->cset] = term->save_csattr;
999 term->sco_acs = term->save_sco_acs;
374330e2 1000 fix_cpos;
887035a5 1001 if (term->use_bce)
1002 term->erase_char = (' ' | ATTR_ASCII |
1003 (term->curr_attr &
1004 (ATTR_FGMASK | ATTR_BGMASK)));
374330e2 1005 }
1006}
1007
1008/*
3c7366f8 1009 * This function is called before doing _anything_ which affects
1010 * only part of a line of text. It is used to mark the boundary
1011 * between two character positions, and it indicates that some sort
1012 * of effect is going to happen on only one side of that boundary.
1013 *
1014 * The effect of this function is to check whether a CJK
1015 * double-width character is straddling the boundary, and to remove
1016 * it and replace it with two spaces if so. (Of course, one or
1017 * other of those spaces is then likely to be replaced with
1018 * something else again, as a result of whatever happens next.)
1019 *
1020 * Also, if the boundary is at the right-hand _edge_ of the screen,
1021 * it implies something deliberate is being done to the rightmost
1022 * column position; hence we must clear LATTR_WRAPPED2.
1023 *
1024 * The input to the function is the coordinates of the _second_
1025 * character of the pair.
1026 */
1027static void check_boundary(Terminal *term, int x, int y)
1028{
1029 unsigned long *ldata;
1030
1031 /* Validate input coordinates, just in case. */
1032 if (x == 0 || x > term->cols)
1033 return;
1034
1035 ldata = lineptr(y);
1036 if (x == term->cols) {
1037 ldata[x] &= ~LATTR_WRAPPED2;
1038 } else {
1039 if ((ldata[x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE) {
1040 ldata[x-1] = ldata[x] =
1041 (ldata[x-1] &~ (CHAR_MASK | CSET_MASK)) | ATTR_ASCII | ' ';
1042 }
1043 }
1044}
1045
1046/*
374330e2 1047 * Erase a large portion of the screen: the whole screen, or the
1048 * whole line, or parts thereof.
1049 */
887035a5 1050static void erase_lots(Terminal *term,
1051 int line_only, int from_begin, int to_end)
32874aea 1052{
260f3dec 1053 pos start, end;
4facdf84 1054 int erase_lattr;
4683b9b6 1055 int erasing_lines_from_top = 0;
374330e2 1056
1057 if (line_only) {
887035a5 1058 start.y = term->curs.y;
4facdf84 1059 start.x = 0;
887035a5 1060 end.y = term->curs.y + 1;
4facdf84 1061 end.x = 0;
1062 erase_lattr = FALSE;
374330e2 1063 } else {
4facdf84 1064 start.y = 0;
1065 start.x = 0;
887035a5 1066 end.y = term->rows;
4facdf84 1067 end.x = 0;
1068 erase_lattr = TRUE;
1069 }
1070 if (!from_begin) {
887035a5 1071 start = term->curs;
374330e2 1072 }
4facdf84 1073 if (!to_end) {
887035a5 1074 end = term->curs;
2a6dfe0e 1075 incpos(end);
4facdf84 1076 }
3c7366f8 1077 if (!from_begin || !to_end)
1078 check_boundary(term, term->curs.x, term->curs.y);
887035a5 1079 check_selection(term, start, end);
e14a5a13 1080
1081 /* Clear screen also forces a full window redraw, just in case. */
887035a5 1082 if (start.y == 0 && start.x == 0 && end.y == term->rows)
1083 term_invalidate(term);
e14a5a13 1084
4683b9b6 1085 /* Lines scrolled away shouldn't be brought back on if the terminal
1086 * resizes. */
1087 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
1088 erasing_lines_from_top = 1;
1089
1090 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
876e5d5e 1091 /* If it's a whole number of lines, starting at the top, and
1092 * we're fully erasing them, erase by scrolling and keep the
1093 * lines in the scrollback. */
1094 int scrolllines = end.y;
1095 if (end.y == term->rows) {
1096 /* Shrink until we find a non-empty row.*/
1097 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
1098 }
1099 if (scrolllines > 0)
1100 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
1101 fix_cpos;
1102 } else {
1103 unsigned long *ldata = lineptr(start.y);
1104 while (poslt(start, end)) {
1105 if (start.x == term->cols) {
1106 if (!erase_lattr)
1107 ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
1108 else
1109 ldata[start.x] = LATTR_NORM;
1110 } else {
1111 ldata[start.x] = term->erase_char;
1112 }
1113 if (incpos(start) && start.y < term->rows)
1114 ldata = lineptr(start.y);
1115 }
4facdf84 1116 }
4683b9b6 1117
1118 /* After an erase of lines from the top of the screen, we shouldn't
1119 * bring the lines back again if the terminal enlarges (since the user or
1120 * application has explictly thrown them away). */
1121 if (erasing_lines_from_top && !(term->alt_which))
1122 term->tempsblines = 0;
374330e2 1123}
1124
1125/*
1126 * Insert or delete characters within the current line. n is +ve if
1127 * insertion is desired, and -ve for deletion.
1128 */
887035a5 1129static void insch(Terminal *term, int n)
32874aea 1130{
374330e2 1131 int dir = (n < 0 ? -1 : +1);
1132 int m;
4facdf84 1133 pos cursplus;
1134 unsigned long *ldata;
374330e2 1135
1136 n = (n < 0 ? -n : n);
887035a5 1137 if (n > term->cols - term->curs.x)
1138 n = term->cols - term->curs.x;
1139 m = term->cols - term->curs.x - n;
1140 cursplus.y = term->curs.y;
1141 cursplus.x = term->curs.x + n;
1142 check_selection(term, term->curs, cursplus);
3c7366f8 1143 check_boundary(term, term->curs.x, term->curs.y);
1144 if (dir < 0)
1145 check_boundary(term, term->curs.x + n, term->curs.y);
887035a5 1146 ldata = lineptr(term->curs.y);
374330e2 1147 if (dir < 0) {
887035a5 1148 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
374330e2 1149 while (n--)
887035a5 1150 ldata[term->curs.x + m++] = term->erase_char;
374330e2 1151 } else {
887035a5 1152 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
374330e2 1153 while (n--)
887035a5 1154 ldata[term->curs.x + n] = term->erase_char;
374330e2 1155 }
1156}
1157
1158/*
1159 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1160 * whether the mode is a DEC private one or a normal one.)
1161 */
887035a5 1162static void toggle_mode(Terminal *term, int mode, int query, int state)
32874aea 1163{
286c6b86 1164 unsigned long ticks;
01c034ad 1165
32874aea 1166 if (query)
1167 switch (mode) {
1168 case 1: /* application cursor keys */
887035a5 1169 term->app_cursor_keys = state;
32874aea 1170 break;
1171 case 2: /* VT52 mode */
887035a5 1172 term->vt52_mode = !state;
1173 if (term->vt52_mode) {
1174 term->blink_is_real = FALSE;
1175 term->vt52_bold = FALSE;
4eeb7d09 1176 } else {
64734920 1177 term->blink_is_real = term->cfg.blinktext;
4eeb7d09 1178 }
32874aea 1179 break;
1180 case 3: /* 80/132 columns */
887035a5 1181 deselect(term);
64734920 1182 if (!term->cfg.no_remote_resize)
a8327734 1183 request_resize(term->frontend, state ? 132 : 80, term->rows);
887035a5 1184 term->reset_132 = state;
7ce3b333 1185 term->alt_t = term->marg_t = 0;
1186 term->alt_b = term->marg_b = term->rows - 1;
1187 move(term, 0, 0, 0);
1188 erase_lots(term, FALSE, TRUE, TRUE);
32874aea 1189 break;
1190 case 5: /* reverse video */
1191 /*
1192 * Toggle reverse video. If we receive an OFF within the
1193 * visual bell timeout period after an ON, we trigger an
1194 * effective visual bell, so that ESC[?5hESC[?5l will
1195 * always be an actually _visible_ visual bell.
1196 */
f7f27309 1197 ticks = GETTICKCOUNT();
286c6b86 1198 /* turn off a previous vbell to avoid inconsistencies */
887035a5 1199 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
1200 term->in_vbell = FALSE;
1201 if (term->rvideo && !state && /* we're turning it off... */
1202 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
286c6b86 1203 /* If there's no vbell timeout already, or this one lasts
1204 * longer, replace vbell_timeout with ours. */
887035a5 1205 if (!term->in_vbell ||
1206 (term->rvbell_startpoint - term->vbell_startpoint <
1207 VBELL_TIMEOUT))
1208 term->vbell_startpoint = term->rvbell_startpoint;
1209 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
1210 } else if (!term->rvideo && state) {
32874aea 1211 /* This is an ON, so we notice the time and save it. */
887035a5 1212 term->rvbell_startpoint = ticks;
32874aea 1213 }
887035a5 1214 term->rvideo = state;
1215 term->seen_disp_event = TRUE;
32874aea 1216 if (state)
887035a5 1217 term_update(term);
32874aea 1218 break;
1219 case 6: /* DEC origin mode */
887035a5 1220 term->dec_om = state;
32874aea 1221 break;
1222 case 7: /* auto wrap */
887035a5 1223 term->wrap = state;
32874aea 1224 break;
1225 case 8: /* auto key repeat */
887035a5 1226 term->repeat_off = !state;
32874aea 1227 break;
1228 case 10: /* set local edit mode */
887035a5 1229 term->term_editing = state;
b9d7bcad 1230 if (term->ldisc) /* cause ldisc to notice changes */
1231 ldisc_send(term->ldisc, NULL, 0, 0);
32874aea 1232 break;
1233 case 25: /* enable/disable cursor */
1234 compatibility2(OTHER, VT220);
887035a5 1235 term->cursor_on = state;
1236 term->seen_disp_event = TRUE;
32874aea 1237 break;
1238 case 47: /* alternate screen */
1239 compatibility(OTHER);
887035a5 1240 deselect(term);
64734920 1241 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
887035a5 1242 term->disptop = 0;
32874aea 1243 break;
1244 case 1000: /* xterm mouse 1 */
887035a5 1245 term->xterm_mouse = state ? 1 : 0;
a8327734 1246 set_raw_mouse_mode(term->frontend, state);
32874aea 1247 break;
1248 case 1002: /* xterm mouse 2 */
887035a5 1249 term->xterm_mouse = state ? 2 : 0;
a8327734 1250 set_raw_mouse_mode(term->frontend, state);
32874aea 1251 break;
8f9b6a1a 1252 case 1047: /* alternate screen */
1253 compatibility(OTHER);
887035a5 1254 deselect(term);
64734920 1255 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
887035a5 1256 term->disptop = 0;
8f9b6a1a 1257 break;
1258 case 1048: /* save/restore cursor */
887035a5 1259 save_cursor(term, state);
1260 if (!state) term->seen_disp_event = TRUE;
8f9b6a1a 1261 break;
1262 case 1049: /* cursor & alternate screen */
1263 if (state)
887035a5 1264 save_cursor(term, state);
1265 if (!state) term->seen_disp_event = TRUE;
8f9b6a1a 1266 compatibility(OTHER);
887035a5 1267 deselect(term);
64734920 1268 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
8f9b6a1a 1269 if (!state)
887035a5 1270 save_cursor(term, state);
1271 term->disptop = 0;
8f9b6a1a 1272 break;
32874aea 1273 } else
1274 switch (mode) {
1275 case 4: /* set insert mode */
1276 compatibility(VT102);
887035a5 1277 term->insert = state;
32874aea 1278 break;
1279 case 12: /* set echo mode */
887035a5 1280 term->term_echoing = !state;
b9d7bcad 1281 if (term->ldisc) /* cause ldisc to notice changes */
1282 ldisc_send(term->ldisc, NULL, 0, 0);
32874aea 1283 break;
1284 case 20: /* Return sends ... */
887035a5 1285 term->cr_lf_return = state;
32874aea 1286 break;
4eeb7d09 1287 case 34: /* Make cursor BIG */
1288 compatibility2(OTHER, VT220);
887035a5 1289 term->big_cursor = !state;
7594731b 1290 }
374330e2 1291}
1292
1293/*
1294 * Process an OSC sequence: set window title or icon name.
1295 */
887035a5 1296static void do_osc(Terminal *term)
32874aea 1297{
887035a5 1298 if (term->osc_w) {
1299 while (term->osc_strlen--)
1300 term->wordness[(unsigned char)
1301 term->osc_string[term->osc_strlen]] = term->esc_args[0];
374330e2 1302 } else {
887035a5 1303 term->osc_string[term->osc_strlen] = '\0';
1304 switch (term->esc_args[0]) {
374330e2 1305 case 0:
1306 case 1:
64734920 1307 if (!term->cfg.no_remote_wintitle)
a8327734 1308 set_icon(term->frontend, term->osc_string);
887035a5 1309 if (term->esc_args[0] == 1)
374330e2 1310 break;
1311 /* fall through: parameter 0 means set both */
1312 case 2:
1313 case 21:
64734920 1314 if (!term->cfg.no_remote_wintitle)
a8327734 1315 set_title(term->frontend, term->osc_string);
374330e2 1316 break;
1317 }
1318 }
1319}
1320
1321/*
b44b307a 1322 * ANSI printing routines.
1323 */
887035a5 1324static void term_print_setup(Terminal *term)
b44b307a 1325{
887035a5 1326 bufchain_clear(&term->printer_buf);
64734920 1327 term->print_job = printer_start_job(term->cfg.printer);
b44b307a 1328}
887035a5 1329static void term_print_flush(Terminal *term)
b44b307a 1330{
1331 void *data;
1332 int len;
1333 int size;
887035a5 1334 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1335 bufchain_prefix(&term->printer_buf, &data, &len);
b44b307a 1336 if (len > size-5)
1337 len = size-5;
887035a5 1338 printer_job_data(term->print_job, data, len);
1339 bufchain_consume(&term->printer_buf, len);
b44b307a 1340 }
1341}
887035a5 1342static void term_print_finish(Terminal *term)
b44b307a 1343{
1344 void *data;
1345 int len, size;
1346 char c;
1347
887035a5 1348 if (!term->printing && !term->only_printing)
1709795f 1349 return; /* we need do nothing */
1350
887035a5 1351 term_print_flush(term);
1352 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1353 bufchain_prefix(&term->printer_buf, &data, &len);
b44b307a 1354 c = *(char *)data;
1355 if (c == '\033' || c == '\233') {
887035a5 1356 bufchain_consume(&term->printer_buf, size);
b44b307a 1357 break;
1358 } else {
887035a5 1359 printer_job_data(term->print_job, &c, 1);
1360 bufchain_consume(&term->printer_buf, 1);
b44b307a 1361 }
1362 }
887035a5 1363 printer_finish_job(term->print_job);
1364 term->print_job = NULL;
1365 term->printing = term->only_printing = FALSE;
b44b307a 1366}
1367
1368/*
374330e2 1369 * Remove everything currently in `inbuf' and stick it up on the
1370 * in-memory display. There's a big state machine in here to
1371 * process escape sequences...
1372 */
887035a5 1373void term_out(Terminal *term)
32874aea 1374{
a748a096 1375 int c, unget;
1376 unsigned char localbuf[256], *chars;
1377 int nchars = 0;
1378
1379 unget = -1;
1380
1709795f 1381 chars = NULL; /* placate compiler warnings */
887035a5 1382 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
a748a096 1383 if (unget == -1) {
1384 if (nchars == 0) {
1385 void *ret;
887035a5 1386 bufchain_prefix(&term->inbuf, &ret, &nchars);
a748a096 1387 if (nchars > sizeof(localbuf))
1388 nchars = sizeof(localbuf);
1389 memcpy(localbuf, ret, nchars);
887035a5 1390 bufchain_consume(&term->inbuf, nchars);
a748a096 1391 chars = localbuf;
1392 assert(chars != NULL);
1393 }
1394 c = *chars++;
1395 nchars--;
c9def1b8 1396
a748a096 1397 /*
1398 * Optionally log the session traffic to a file. Useful for
1399 * debugging and possibly also useful for actual logging.
1400 */
64734920 1401 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
a8327734 1402 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
a748a096 1403 } else {
1404 c = unget;
1405 unget = -1;
5a16642f 1406 }
1407
e14a5a13 1408 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1409 * be able to display 8-bit characters, but I'll let that go 'cause
1410 * of i18n.
1411 */
4eeb7d09 1412
b44b307a 1413 /*
1414 * If we're printing, add the character to the printer
1415 * buffer.
1416 */
887035a5 1417 if (term->printing) {
1418 bufchain_add(&term->printer_buf, &c, 1);
b44b307a 1419
1420 /*
1421 * If we're in print-only mode, we use a much simpler
1422 * state machine designed only to recognise the ESC[4i
1423 * termination sequence.
1424 */
887035a5 1425 if (term->only_printing) {
b44b307a 1426 if (c == '\033')
887035a5 1427 term->print_state = 1;
b44b307a 1428 else if (c == (unsigned char)'\233')
887035a5 1429 term->print_state = 2;
1430 else if (c == '[' && term->print_state == 1)
1431 term->print_state = 2;
1432 else if (c == '4' && term->print_state == 2)
1433 term->print_state = 3;
1434 else if (c == 'i' && term->print_state == 3)
1435 term->print_state = 4;
b44b307a 1436 else
887035a5 1437 term->print_state = 0;
1438 if (term->print_state == 4) {
1439 term_print_finish(term);
b44b307a 1440 }
1441 continue;
1442 }
1443 }
1444
4eeb7d09 1445 /* First see about all those translations. */
887035a5 1446 if (term->termstate == TOPLEVEL) {
1447 if (in_utf(term))
1448 switch (term->utf_state) {
4eeb7d09 1449 case 0:
1450 if (c < 0x80) {
8f22582c 1451 /* UTF-8 must be stateless so we ignore iso2022. */
21d2b241 1452 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1453 c = term->ucsdata->unitab_ctrl[c];
8f22582c 1454 else c = ((unsigned char)c) | ATTR_ASCII;
1455 break;
4eeb7d09 1456 } else if ((c & 0xe0) == 0xc0) {
887035a5 1457 term->utf_size = term->utf_state = 1;
1458 term->utf_char = (c & 0x1f);
4eeb7d09 1459 } else if ((c & 0xf0) == 0xe0) {
887035a5 1460 term->utf_size = term->utf_state = 2;
1461 term->utf_char = (c & 0x0f);
4eeb7d09 1462 } else if ((c & 0xf8) == 0xf0) {
887035a5 1463 term->utf_size = term->utf_state = 3;
1464 term->utf_char = (c & 0x07);
4eeb7d09 1465 } else if ((c & 0xfc) == 0xf8) {
887035a5 1466 term->utf_size = term->utf_state = 4;
1467 term->utf_char = (c & 0x03);
4eeb7d09 1468 } else if ((c & 0xfe) == 0xfc) {
887035a5 1469 term->utf_size = term->utf_state = 5;
1470 term->utf_char = (c & 0x01);
4eeb7d09 1471 } else {
1472 c = UCSERR;
1473 break;
1474 }
1475 continue;
1476 case 1:
1477 case 2:
1478 case 3:
1479 case 4:
1480 case 5:
1481 if ((c & 0xC0) != 0x80) {
a748a096 1482 unget = c;
5a16642f 1483 c = UCSERR;
887035a5 1484 term->utf_state = 0;
4eeb7d09 1485 break;
1486 }
887035a5 1487 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1488 if (--term->utf_state)
4eeb7d09 1489 continue;
1490
887035a5 1491 c = term->utf_char;
4eeb7d09 1492
1493 /* Is somebody trying to be evil! */
1494 if (c < 0x80 ||
887035a5 1495 (c < 0x800 && term->utf_size >= 2) ||
1496 (c < 0x10000 && term->utf_size >= 3) ||
1497 (c < 0x200000 && term->utf_size >= 4) ||
1498 (c < 0x4000000 && term->utf_size >= 5))
4eeb7d09 1499 c = UCSERR;
1500
1501 /* Unicode line separator and paragraph separator are CR-LF */
1502 if (c == 0x2028 || c == 0x2029)
1503 c = 0x85;
1504
1505 /* High controls are probably a Baaad idea too. */
1506 if (c < 0xA0)
1507 c = 0xFFFD;
1508
1509 /* The UTF-16 surrogates are not nice either. */
1510 /* The standard give the option of decoding these:
1511 * I don't want to! */
1512 if (c >= 0xD800 && c < 0xE000)
1513 c = UCSERR;
1514
1515 /* ISO 10646 characters now limited to UTF-16 range. */
1516 if (c > 0x10FFFF)
1517 c = UCSERR;
1518
1519 /* This is currently a TagPhobic application.. */
1520 if (c >= 0xE0000 && c <= 0xE007F)
1521 continue;
1522
1523 /* U+FEFF is best seen as a null. */
1524 if (c == 0xFEFF)
1525 continue;
1526 /* But U+FFFE is an error. */
1527 if (c == 0xFFFE || c == 0xFFFF)
1528 c = UCSERR;
1529
1530 /* Oops this is a 16bit implementation */
1531 if (c >= 0x10000)
1532 c = 0xFFFD;
1533 break;
d3cb5465 1534 }
1535 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
887035a5 1536 else if(term->sco_acs &&
92e23ad9 1537 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
d3cb5465 1538 {
5dc6132d 1539 if (term->sco_acs == 2) c |= 0x80;
d3cb5465 1540 c |= ATTR_SCOACS;
4eeb7d09 1541 } else {
887035a5 1542 switch (term->cset_attr[term->cset]) {
4eeb7d09 1543 /*
1544 * Linedraw characters are different from 'ESC ( B'
1545 * only for a small range. For ones outside that
1546 * range, make sure we use the same font as well as
1547 * the same encoding.
1548 */
1549 case ATTR_LINEDRW:
21d2b241 1550 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1551 c = term->ucsdata->unitab_ctrl[c];
4eeb7d09 1552 else
1553 c = ((unsigned char) c) | ATTR_LINEDRW;
1554 break;
1555
1556 case ATTR_GBCHR:
1557 /* If UK-ASCII, make the '#' a LineDraw Pound */
1558 if (c == '#') {
1559 c = '}' | ATTR_LINEDRW;
1560 break;
1561 }
1562 /*FALLTHROUGH*/ case ATTR_ASCII:
21d2b241 1563 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1564 c = term->ucsdata->unitab_ctrl[c];
4eeb7d09 1565 else
1566 c = ((unsigned char) c) | ATTR_ASCII;
1567 break;
d3cb5465 1568 case ATTR_SCOACS:
1569 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1570 break;
4eeb7d09 1571 }
1572 }
1573 }
1574
1575 /* How about C1 controls ? */
887035a5 1576 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1577 !term->vt52_mode && has_compat(VT220)) {
1578 term->termstate = SEEN_ESC;
1579 term->esc_query = FALSE;
4eeb7d09 1580 c = '@' + (c & 0x1F);
1581 }
1582
1583 /* Or the GL control. */
887035a5 1584 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1585 if (term->curs.x && !term->wrapnext)
1586 term->curs.x--;
1587 term->wrapnext = FALSE;
4eeb7d09 1588 fix_cpos;
64734920 1589 if (!term->cfg.no_dbackspace) /* destructive bksp might be disabled */
887035a5 1590 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
4eeb7d09 1591 } else
1592 /* Or normal C0 controls. */
887035a5 1593 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
374330e2 1594 switch (c) {
1595 case '\005': /* terminal type query */
e14a5a13 1596 /* Strictly speaking this is VT100 but a VT100 defaults to
1597 * no response. Other terminals respond at their option.
1598 *
1599 * Don't put a CR in the default string as this tends to
1600 * upset some weird software.
1601 *
1602 * An xterm returns "xterm" (5 characters)
1603 */
32874aea 1604 compatibility(ANSIMIN);
b9d7bcad 1605 if (term->ldisc) {
e7fbcdd8 1606 char abuf[256], *s, *d;
32874aea 1607 int state = 0;
64734920 1608 for (s = term->cfg.answerback, d = abuf; *s; s++) {
32874aea 1609 if (state) {
1610 if (*s >= 'a' && *s <= 'z')
1611 *d++ = (*s - ('a' - 1));
1612 else if ((*s >= '@' && *s <= '_') ||
1613 *s == '?' || (*s & 0x80))
1614 *d++ = ('@' ^ *s);
1615 else if (*s == '~')
1616 *d++ = '^';
1617 state = 0;
1618 } else if (*s == '^') {
1619 state = 1;
1620 } else
4eeb7d09 1621 *d++ = *s;
e7fbcdd8 1622 }
b9d7bcad 1623 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1624 abuf, d - abuf, 0);
e7fbcdd8 1625 }
374330e2 1626 break;
1627 case '\007':
156686ef 1628 {
1629 struct beeptime *newbeep;
286c6b86 1630 unsigned long ticks;
156686ef 1631
f7f27309 1632 ticks = GETTICKCOUNT();
156686ef 1633
887035a5 1634 if (!term->beep_overloaded) {
3d88e64d 1635 newbeep = snew(struct beeptime);
156686ef 1636 newbeep->ticks = ticks;
1637 newbeep->next = NULL;
887035a5 1638 if (!term->beephead)
1639 term->beephead = newbeep;
156686ef 1640 else
887035a5 1641 term->beeptail->next = newbeep;
1642 term->beeptail = newbeep;
1643 term->nbeeps++;
156686ef 1644 }
1645
1646 /*
1647 * Throw out any beeps that happened more than
1648 * t seconds ago.
1649 */
887035a5 1650 while (term->beephead &&
64734920 1651 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
887035a5 1652 struct beeptime *tmp = term->beephead;
1653 term->beephead = tmp->next;
156686ef 1654 sfree(tmp);
887035a5 1655 if (!term->beephead)
1656 term->beeptail = NULL;
1657 term->nbeeps--;
156686ef 1658 }
1659
64734920 1660 if (term->cfg.bellovl && term->beep_overloaded &&
1661 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
156686ef 1662 /*
1663 * If we're currently overloaded and the
1664 * last beep was more than s seconds ago,
1665 * leave overload mode.
1666 */
887035a5 1667 term->beep_overloaded = FALSE;
64734920 1668 } else if (term->cfg.bellovl && !term->beep_overloaded &&
1669 term->nbeeps >= term->cfg.bellovl_n) {
156686ef 1670 /*
1671 * Now, if we have n or more beeps
1672 * remaining in the queue, go into overload
1673 * mode.
1674 */
887035a5 1675 term->beep_overloaded = TRUE;
156686ef 1676 }
887035a5 1677 term->lastbeep = ticks;
156686ef 1678
1679 /*
1680 * Perform an actual beep if we're not overloaded.
1681 */
64734920 1682 if (!term->cfg.bellovl || !term->beep_overloaded) {
1683 beep(term->frontend, term->cfg.beep);
1684 if (term->cfg.beep == BELL_VISUAL) {
887035a5 1685 term->in_vbell = TRUE;
1686 term->vbell_startpoint = ticks;
1687 term_update(term);
0ce89525 1688 }
156686ef 1689 }
887035a5 1690 term->disptop = 0;
156686ef 1691 }
374330e2 1692 break;
1693 case '\b':
887035a5 1694 if (term->curs.x == 0 &&
1695 (term->curs.y == 0 || term->wrap == 0))
1696 /* do nothing */ ;
1697 else if (term->curs.x == 0 && term->curs.y > 0)
1698 term->curs.x = term->cols - 1, term->curs.y--;
1699 else if (term->wrapnext)
1700 term->wrapnext = FALSE;
374330e2 1701 else
887035a5 1702 term->curs.x--;
374330e2 1703 fix_cpos;
887035a5 1704 term->seen_disp_event = TRUE;
374330e2 1705 break;
1706 case '\016':
32874aea 1707 compatibility(VT100);
887035a5 1708 term->cset = 1;
374330e2 1709 break;
1710 case '\017':
32874aea 1711 compatibility(VT100);
887035a5 1712 term->cset = 0;
374330e2 1713 break;
1714 case '\033':
887035a5 1715 if (term->vt52_mode)
1716 term->termstate = VT52_ESC;
e14a5a13 1717 else {
1718 compatibility(ANSIMIN);
887035a5 1719 term->termstate = SEEN_ESC;
1720 term->esc_query = FALSE;
e14a5a13 1721 }
374330e2 1722 break;
92e23ad9 1723 case '\015':
887035a5 1724 term->curs.x = 0;
1725 term->wrapnext = FALSE;
374330e2 1726 fix_cpos;
887035a5 1727 term->seen_disp_event = TRUE;
1728 term->paste_hold = 0;
a8327734 1729 if (term->logctx)
1730 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
374330e2 1731 break;
374330e2 1732 case '\014':
1a837633 1733 if (has_compat(SCOANSI)) {
887035a5 1734 move(term, 0, 0, 0);
1735 erase_lots(term, FALSE, FALSE, TRUE);
1736 term->disptop = 0;
1737 term->wrapnext = FALSE;
1738 term->seen_disp_event = 1;
1a837633 1739 break;
1740 }
1741 case '\013':
32874aea 1742 compatibility(VT100);
92e23ad9 1743 case '\012':
887035a5 1744 if (term->curs.y == term->marg_b)
1745 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1746 else if (term->curs.y < term->rows - 1)
1747 term->curs.y++;
64734920 1748 if (term->cfg.lfhascr)
887035a5 1749 term->curs.x = 0;
374330e2 1750 fix_cpos;
887035a5 1751 term->wrapnext = FALSE;
1752 term->seen_disp_event = 1;
1753 term->paste_hold = 0;
a8327734 1754 if (term->logctx)
1755 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
374330e2 1756 break;
1757 case '\t':
374330e2 1758 {
887035a5 1759 pos old_curs = term->curs;
1760 unsigned long *ldata = lineptr(term->curs.y);
c9def1b8 1761
1762 do {
887035a5 1763 term->curs.x++;
1764 } while (term->curs.x < term->cols - 1 &&
1765 !term->tabs[term->curs.x]);
c9def1b8 1766
887035a5 1767 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1768 if (term->curs.x >= term->cols / 2)
1769 term->curs.x = term->cols / 2 - 1;
32874aea 1770 } else {
887035a5 1771 if (term->curs.x >= term->cols)
1772 term->curs.x = term->cols - 1;
c9def1b8 1773 }
1774
374330e2 1775 fix_cpos;
887035a5 1776 check_selection(term, old_curs, term->curs);
374330e2 1777 }
887035a5 1778 term->seen_disp_event = TRUE;
374330e2 1779 break;
cabfd08c 1780 }
32874aea 1781 } else
887035a5 1782 switch (term->termstate) {
32874aea 1783 case TOPLEVEL:
887035a5 1784 /* Only graphic characters get this far;
1785 * ctrls are stripped above */
1786 if (term->wrapnext && term->wrap) {
1787 term->cpos[1] |= LATTR_WRAPPED;
1788 if (term->curs.y == term->marg_b)
1789 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1790 else if (term->curs.y < term->rows - 1)
1791 term->curs.y++;
1792 term->curs.x = 0;
32874aea 1793 fix_cpos;
887035a5 1794 term->wrapnext = FALSE;
374330e2 1795 }
887035a5 1796 if (term->insert)
1797 insch(term, 1);
1798 if (term->selstate != NO_SELECTION) {
1799 pos cursplus = term->curs;
32874aea 1800 incpos(cursplus);
887035a5 1801 check_selection(term, term->curs, cursplus);
374330e2 1802 }
a8327734 1803 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1804 term->logctx)
1805 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
4eeb7d09 1806 {
4eeb7d09 1807 int width = 0;
1808 if (DIRECT_CHAR(c))
1809 width = 1;
1810 if (!width)
1811 width = wcwidth((wchar_t) c);
1812 switch (width) {
1813 case 2:
3c7366f8 1814 /*
1815 * If we're about to display a double-width
1816 * character starting in the rightmost
1817 * column, then we do something special
1818 * instead. We must print a space in the
1819 * last column of the screen, then wrap;
1820 * and we also set LATTR_WRAPPED2 which
1821 * instructs subsequent cut-and-pasting not
1822 * only to splice this line to the one
1823 * after it, but to ignore the space in the
1824 * last character position as well.
1825 * (Because what was actually output to the
1826 * terminal was presumably just a sequence
1827 * of CJK characters, and we don't want a
1828 * space to be pasted in the middle of
1829 * those just because they had the
1830 * misfortune to start in the wrong parity
1831 * column. xterm concurs.)
1832 */
1833 check_boundary(term, term->curs.x, term->curs.y);
1834 check_boundary(term, term->curs.x+2, term->curs.y);
1835 if (term->curs.x == term->cols-1) {
1836 *term->cpos++ = ATTR_ASCII | ' ' | term->curr_attr;
1837 *term->cpos |= LATTR_WRAPPED | LATTR_WRAPPED2;
887035a5 1838 if (term->curs.y == term->marg_b)
1839 scroll(term, term->marg_t, term->marg_b,
1840 1, TRUE);
1841 else if (term->curs.y < term->rows - 1)
1842 term->curs.y++;
1843 term->curs.x = 0;
5a73255e 1844 fix_cpos;
3c7366f8 1845 /* Now we must check_boundary again, of course. */
1846 check_boundary(term, term->curs.x, term->curs.y);
1847 check_boundary(term, term->curs.x+2, term->curs.y);
4eeb7d09 1848 }
3c7366f8 1849 *term->cpos++ = c | term->curr_attr;
887035a5 1850 *term->cpos++ = UCSWIDE | term->curr_attr;
3c7366f8 1851 term->curs.x++;
5a73255e 1852 break;
4eeb7d09 1853 case 1:
3c7366f8 1854 check_boundary(term, term->curs.x, term->curs.y);
1855 check_boundary(term, term->curs.x+1, term->curs.y);
887035a5 1856 *term->cpos++ = c | term->curr_attr;
32874aea 1857 break;
4eeb7d09 1858 default:
1859 continue;
32874aea 1860 }
374330e2 1861 }
887035a5 1862 term->curs.x++;
1863 if (term->curs.x == term->cols) {
1864 term->cpos--;
1865 term->curs.x--;
1866 term->wrapnext = TRUE;
1867 if (term->wrap && term->vt52_mode) {
1868 term->cpos[1] |= LATTR_WRAPPED;
1869 if (term->curs.y == term->marg_b)
1870 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1871 else if (term->curs.y < term->rows - 1)
1872 term->curs.y++;
1873 term->curs.x = 0;
4eeb7d09 1874 fix_cpos;
887035a5 1875 term->wrapnext = FALSE;
4eeb7d09 1876 }
e14a5a13 1877 }
887035a5 1878 term->seen_disp_event = 1;
374330e2 1879 break;
32874aea 1880
32874aea 1881 case OSC_MAYBE_ST:
1882 /*
1883 * This state is virtually identical to SEEN_ESC, with the
1884 * exception that we have an OSC sequence in the pipeline,
1885 * and _if_ we see a backslash, we process it.
1886 */
1887 if (c == '\\') {
887035a5 1888 do_osc(term);
1889 term->termstate = TOPLEVEL;
32874aea 1890 break;
e14a5a13 1891 }
32874aea 1892 /* else fall through */
1893 case SEEN_ESC:
4eeb7d09 1894 if (c >= ' ' && c <= '/') {
887035a5 1895 if (term->esc_query)
1896 term->esc_query = -1;
4eeb7d09 1897 else
887035a5 1898 term->esc_query = c;
32874aea 1899 break;
4eeb7d09 1900 }
887035a5 1901 term->termstate = TOPLEVEL;
1902 switch (ANSI(c, term->esc_query)) {
32874aea 1903 case '[': /* enter CSI mode */
887035a5 1904 term->termstate = SEEN_CSI;
1905 term->esc_nargs = 1;
1906 term->esc_args[0] = ARG_DEFAULT;
1907 term->esc_query = FALSE;
32874aea 1908 break;
1909 case ']': /* xterm escape sequences */
1910 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1911 compatibility(OTHER);
887035a5 1912 term->termstate = SEEN_OSC;
1913 term->esc_args[0] = 0;
32874aea 1914 break;
32874aea 1915 case '7': /* save cursor */
1916 compatibility(VT100);
887035a5 1917 save_cursor(term, TRUE);
32874aea 1918 break;
1919 case '8': /* restore cursor */
1920 compatibility(VT100);
887035a5 1921 save_cursor(term, FALSE);
1922 term->seen_disp_event = TRUE;
32874aea 1923 break;
1924 case '=':
1925 compatibility(VT100);
887035a5 1926 term->app_keypad_keys = TRUE;
32874aea 1927 break;
1928 case '>':
1929 compatibility(VT100);
887035a5 1930 term->app_keypad_keys = FALSE;
32874aea 1931 break;
1932 case 'D': /* exactly equivalent to LF */
1933 compatibility(VT100);
887035a5 1934 if (term->curs.y == term->marg_b)
1935 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1936 else if (term->curs.y < term->rows - 1)
1937 term->curs.y++;
32874aea 1938 fix_cpos;
887035a5 1939 term->wrapnext = FALSE;
1940 term->seen_disp_event = TRUE;
32874aea 1941 break;
1942 case 'E': /* exactly equivalent to CR-LF */
1943 compatibility(VT100);
887035a5 1944 term->curs.x = 0;
1945 if (term->curs.y == term->marg_b)
1946 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1947 else if (term->curs.y < term->rows - 1)
1948 term->curs.y++;
32874aea 1949 fix_cpos;
887035a5 1950 term->wrapnext = FALSE;
1951 term->seen_disp_event = TRUE;
32874aea 1952 break;
1953 case 'M': /* reverse index - backwards LF */
1954 compatibility(VT100);
887035a5 1955 if (term->curs.y == term->marg_t)
1956 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1957 else if (term->curs.y > 0)
1958 term->curs.y--;
32874aea 1959 fix_cpos;
887035a5 1960 term->wrapnext = FALSE;
1961 term->seen_disp_event = TRUE;
32874aea 1962 break;
1963 case 'Z': /* terminal type query */
1964 compatibility(VT100);
b9d7bcad 1965 if (term->ldisc)
1966 ldisc_send(term->ldisc, term->id_string,
1967 strlen(term->id_string), 0);
32874aea 1968 break;
1969 case 'c': /* restore power-on settings */
1970 compatibility(VT100);
887035a5 1971 power_on(term);
b9d7bcad 1972 if (term->ldisc) /* cause ldisc to notice changes */
1973 ldisc_send(term->ldisc, NULL, 0, 0);
887035a5 1974 if (term->reset_132) {
64734920 1975 if (!term->cfg.no_remote_resize)
a8327734 1976 request_resize(term->frontend, 80, term->rows);
887035a5 1977 term->reset_132 = 0;
374330e2 1978 }
32874aea 1979 fix_cpos;
887035a5 1980 term->disptop = 0;
1981 term->seen_disp_event = TRUE;
32874aea 1982 break;
32874aea 1983 case 'H': /* set a tab */
1984 compatibility(VT100);
887035a5 1985 term->tabs[term->curs.x] = TRUE;
32874aea 1986 break;
4eeb7d09 1987
1988 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1989 compatibility(VT100);
1990 {
1991 unsigned long *ldata;
1992 int i, j;
1993 pos scrtop, scrbot;
1994
887035a5 1995 for (i = 0; i < term->rows; i++) {
4eeb7d09 1996 ldata = lineptr(i);
887035a5 1997 for (j = 0; j < term->cols; j++)
4eeb7d09 1998 ldata[j] = ATTR_DEFAULT | 'E';
887035a5 1999 ldata[term->cols] = 0;
4eeb7d09 2000 }
887035a5 2001 term->disptop = 0;
2002 term->seen_disp_event = TRUE;
4eeb7d09 2003 scrtop.x = scrtop.y = 0;
2004 scrbot.x = 0;
887035a5 2005 scrbot.y = term->rows;
2006 check_selection(term, scrtop, scrbot);
4eeb7d09 2007 }
2008 break;
2009
2010 case ANSI('3', '#'):
2011 case ANSI('4', '#'):
2012 case ANSI('5', '#'):
2013 case ANSI('6', '#'):
2014 compatibility(VT100);
2015 {
2016 unsigned long nlattr;
2017 unsigned long *ldata;
887035a5 2018 switch (ANSI(c, term->esc_query)) {
4eeb7d09 2019 case ANSI('3', '#'):
2020 nlattr = LATTR_TOP;
2021 break;
2022 case ANSI('4', '#'):
2023 nlattr = LATTR_BOT;
2024 break;
2025 case ANSI('5', '#'):
2026 nlattr = LATTR_NORM;
2027 break;
2d466ffd 2028 default: /* spiritually case ANSI('6', '#'): */
4eeb7d09 2029 nlattr = LATTR_WIDE;
2030 break;
2031 }
887035a5 2032 ldata = lineptr(term->curs.y);
2033 ldata[term->cols] &= ~LATTR_MODE;
2034 ldata[term->cols] |= nlattr;
4eeb7d09 2035 }
2036 break;
2037
2038 case ANSI('A', '('):
2039 compatibility(VT100);
64734920 2040 if (!term->cfg.no_remote_charset)
887035a5 2041 term->cset_attr[0] = ATTR_GBCHR;
4eeb7d09 2042 break;
2043 case ANSI('B', '('):
2044 compatibility(VT100);
64734920 2045 if (!term->cfg.no_remote_charset)
887035a5 2046 term->cset_attr[0] = ATTR_ASCII;
4eeb7d09 2047 break;
2048 case ANSI('0', '('):
2049 compatibility(VT100);
64734920 2050 if (!term->cfg.no_remote_charset)
887035a5 2051 term->cset_attr[0] = ATTR_LINEDRW;
4eeb7d09 2052 break;
d3cb5465 2053 case ANSI('U', '('):
2054 compatibility(OTHER);
64734920 2055 if (!term->cfg.no_remote_charset)
887035a5 2056 term->cset_attr[0] = ATTR_SCOACS;
d3cb5465 2057 break;
4eeb7d09 2058
2059 case ANSI('A', ')'):
2060 compatibility(VT100);
64734920 2061 if (!term->cfg.no_remote_charset)
887035a5 2062 term->cset_attr[1] = ATTR_GBCHR;
4eeb7d09 2063 break;
2064 case ANSI('B', ')'):
2065 compatibility(VT100);
64734920 2066 if (!term->cfg.no_remote_charset)
887035a5 2067 term->cset_attr[1] = ATTR_ASCII;
4eeb7d09 2068 break;
2069 case ANSI('0', ')'):
2070 compatibility(VT100);
64734920 2071 if (!term->cfg.no_remote_charset)
887035a5 2072 term->cset_attr[1] = ATTR_LINEDRW;
4eeb7d09 2073 break;
d3cb5465 2074 case ANSI('U', ')'):
2075 compatibility(OTHER);
64734920 2076 if (!term->cfg.no_remote_charset)
887035a5 2077 term->cset_attr[1] = ATTR_SCOACS;
d3cb5465 2078 break;
4eeb7d09 2079
2080 case ANSI('8', '%'): /* Old Linux code */
2081 case ANSI('G', '%'):
2082 compatibility(OTHER);
64734920 2083 if (!term->cfg.no_remote_charset)
887035a5 2084 term->utf = 1;
4eeb7d09 2085 break;
2086 case ANSI('@', '%'):
2087 compatibility(OTHER);
64734920 2088 if (!term->cfg.no_remote_charset)
887035a5 2089 term->utf = 0;
4eeb7d09 2090 break;
374330e2 2091 }
2092 break;
32874aea 2093 case SEEN_CSI:
887035a5 2094 term->termstate = TOPLEVEL; /* default */
32874aea 2095 if (isdigit(c)) {
887035a5 2096 if (term->esc_nargs <= ARGS_MAX) {
2097 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
2098 term->esc_args[term->esc_nargs - 1] = 0;
2099 term->esc_args[term->esc_nargs - 1] =
2100 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
32874aea 2101 }
887035a5 2102 term->termstate = SEEN_CSI;
32874aea 2103 } else if (c == ';') {
887035a5 2104 if (++term->esc_nargs <= ARGS_MAX)
2105 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
2106 term->termstate = SEEN_CSI;
32874aea 2107 } else if (c < '@') {
887035a5 2108 if (term->esc_query)
2109 term->esc_query = -1;
32874aea 2110 else if (c == '?')
887035a5 2111 term->esc_query = TRUE;
32874aea 2112 else
887035a5 2113 term->esc_query = c;
2114 term->termstate = SEEN_CSI;
32874aea 2115 } else
887035a5 2116 switch (ANSI(c, term->esc_query)) {
32874aea 2117 case 'A': /* move up N lines */
887035a5 2118 move(term, term->curs.x,
2119 term->curs.y - def(term->esc_args[0], 1), 1);
2120 term->seen_disp_event = TRUE;
32874aea 2121 break;
2122 case 'e': /* move down N lines */
2123 compatibility(ANSI);
5442e92f 2124 /* FALLTHROUGH */
32874aea 2125 case 'B':
887035a5 2126 move(term, term->curs.x,
2127 term->curs.y + def(term->esc_args[0], 1), 1);
2128 term->seen_disp_event = TRUE;
32874aea 2129 break;
32874aea 2130 case ANSI('c', '>'): /* report xterm version */
2131 compatibility(OTHER);
2132 /* this reports xterm version 136 so that VIM can
2133 use the drag messages from the mouse reporting */
b9d7bcad 2134 if (term->ldisc)
2135 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
32874aea 2136 break;
5442e92f 2137 case 'a': /* move right N cols */
2138 compatibility(ANSI);
2139 /* FALLTHROUGH */
32874aea 2140 case 'C':
887035a5 2141 move(term, term->curs.x + def(term->esc_args[0], 1),
2142 term->curs.y, 1);
2143 term->seen_disp_event = TRUE;
32874aea 2144 break;
2145 case 'D': /* move left N cols */
887035a5 2146 move(term, term->curs.x - def(term->esc_args[0], 1),
2147 term->curs.y, 1);
2148 term->seen_disp_event = TRUE;
32874aea 2149 break;
2150 case 'E': /* move down N lines and CR */
2151 compatibility(ANSI);
887035a5 2152 move(term, 0,
2153 term->curs.y + def(term->esc_args[0], 1), 1);
2154 term->seen_disp_event = TRUE;
32874aea 2155 break;
2156 case 'F': /* move up N lines and CR */
2157 compatibility(ANSI);
887035a5 2158 move(term, 0,
2159 term->curs.y - def(term->esc_args[0], 1), 1);
2160 term->seen_disp_event = TRUE;
32874aea 2161 break;
2162 case 'G':
2163 case '`': /* set horizontal posn */
2164 compatibility(ANSI);
887035a5 2165 move(term, def(term->esc_args[0], 1) - 1,
2166 term->curs.y, 0);
2167 term->seen_disp_event = TRUE;
32874aea 2168 break;
2169 case 'd': /* set vertical posn */
2170 compatibility(ANSI);
887035a5 2171 move(term, term->curs.x,
2172 ((term->dec_om ? term->marg_t : 0) +
2173 def(term->esc_args[0], 1) - 1),
2174 (term->dec_om ? 2 : 0));
2175 term->seen_disp_event = TRUE;
32874aea 2176 break;
2177 case 'H':
2178 case 'f': /* set horz and vert posns at once */
887035a5 2179 if (term->esc_nargs < 2)
2180 term->esc_args[1] = ARG_DEFAULT;
2181 move(term, def(term->esc_args[1], 1) - 1,
2182 ((term->dec_om ? term->marg_t : 0) +
2183 def(term->esc_args[0], 1) - 1),
2184 (term->dec_om ? 2 : 0));
2185 term->seen_disp_event = TRUE;
32874aea 2186 break;
2187 case 'J': /* erase screen or parts of it */
2188 {
887035a5 2189 unsigned int i = def(term->esc_args[0], 0) + 1;
32874aea 2190 if (i > 3)
2191 i = 0;
887035a5 2192 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
32874aea 2193 }
887035a5 2194 term->disptop = 0;
2195 term->seen_disp_event = TRUE;
32874aea 2196 break;
2197 case 'K': /* erase line or parts of it */
2198 {
887035a5 2199 unsigned int i = def(term->esc_args[0], 0) + 1;
32874aea 2200 if (i > 3)
2201 i = 0;
887035a5 2202 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
32874aea 2203 }
887035a5 2204 term->seen_disp_event = TRUE;
32874aea 2205 break;
2206 case 'L': /* insert lines */
2207 compatibility(VT102);
887035a5 2208 if (term->curs.y <= term->marg_b)
2209 scroll(term, term->curs.y, term->marg_b,
2210 -def(term->esc_args[0], 1), FALSE);
32874aea 2211 fix_cpos;
887035a5 2212 term->seen_disp_event = TRUE;
32874aea 2213 break;
2214 case 'M': /* delete lines */
2215 compatibility(VT102);
887035a5 2216 if (term->curs.y <= term->marg_b)
2217 scroll(term, term->curs.y, term->marg_b,
2218 def(term->esc_args[0], 1),
32874aea 2219 TRUE);
2220 fix_cpos;
887035a5 2221 term->seen_disp_event = TRUE;
32874aea 2222 break;
2223 case '@': /* insert chars */
2224 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2225 compatibility(VT102);
887035a5 2226 insch(term, def(term->esc_args[0], 1));
2227 term->seen_disp_event = TRUE;
32874aea 2228 break;
2229 case 'P': /* delete chars */
2230 compatibility(VT102);
887035a5 2231 insch(term, -def(term->esc_args[0], 1));
2232 term->seen_disp_event = TRUE;
32874aea 2233 break;
2234 case 'c': /* terminal type query */
2235 compatibility(VT100);
2236 /* This is the response for a VT102 */
b9d7bcad 2237 if (term->ldisc)
2238 ldisc_send(term->ldisc, term->id_string,
2239 strlen(term->id_string), 0);
32874aea 2240 break;
2241 case 'n': /* cursor position query */
b9d7bcad 2242 if (term->ldisc) {
2243 if (term->esc_args[0] == 6) {
2244 char buf[32];
2245 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
2246 term->curs.x + 1);
2247 ldisc_send(term->ldisc, buf, strlen(buf), 0);
2248 } else if (term->esc_args[0] == 5) {
2249 ldisc_send(term->ldisc, "\033[0n", 4, 0);
2250 }
32874aea 2251 }
2252 break;
2253 case 'h': /* toggle modes to high */
2254 case ANSI_QUE('h'):
2255 compatibility(VT100);
2256 {
2257 int i;
887035a5 2258 for (i = 0; i < term->esc_nargs; i++)
2259 toggle_mode(term, term->esc_args[i],
2260 term->esc_query, TRUE);
32874aea 2261 }
2262 break;
b44b307a 2263 case 'i':
2264 case ANSI_QUE('i'):
2265 compatibility(VT100);
2266 {
887035a5 2267 if (term->esc_nargs != 1) break;
64734920 2268 if (term->esc_args[0] == 5 && *term->cfg.printer) {
887035a5 2269 term->printing = TRUE;
2270 term->only_printing = !term->esc_query;
2271 term->print_state = 0;
2272 term_print_setup(term);
2273 } else if (term->esc_args[0] == 4 &&
2274 term->printing) {
2275 term_print_finish(term);
b44b307a 2276 }
2277 }
2278 break;
32874aea 2279 case 'l': /* toggle modes to low */
2280 case ANSI_QUE('l'):
2281 compatibility(VT100);
2282 {
2283 int i;
887035a5 2284 for (i = 0; i < term->esc_nargs; i++)
2285 toggle_mode(term, term->esc_args[i],
2286 term->esc_query, FALSE);
32874aea 2287 }
2288 break;
2289 case 'g': /* clear tabs */
2290 compatibility(VT100);
887035a5 2291 if (term->esc_nargs == 1) {
2292 if (term->esc_args[0] == 0) {
2293 term->tabs[term->curs.x] = FALSE;
2294 } else if (term->esc_args[0] == 3) {
32874aea 2295 int i;
887035a5 2296 for (i = 0; i < term->cols; i++)
2297 term->tabs[i] = FALSE;
32874aea 2298 }
2299 }
2300 break;
2301 case 'r': /* set scroll margins */
2302 compatibility(VT100);
887035a5 2303 if (term->esc_nargs <= 2) {
32874aea 2304 int top, bot;
887035a5 2305 top = def(term->esc_args[0], 1) - 1;
2306 bot = (term->esc_nargs <= 1
2307 || term->esc_args[1] == 0 ?
2308 term->rows :
2309 def(term->esc_args[1], term->rows)) - 1;
2310 if (bot >= term->rows)
2311 bot = term->rows - 1;
32874aea 2312 /* VTTEST Bug 9 - if region is less than 2 lines
2313 * don't change region.
2314 */
2315 if (bot - top > 0) {
887035a5 2316 term->marg_t = top;
2317 term->marg_b = bot;
2318 term->curs.x = 0;
32874aea 2319 /*
2320 * I used to think the cursor should be
2321 * placed at the top of the newly marginned
2322 * area. Apparently not: VMS TPU falls over
2323 * if so.
2324 *
887035a5 2325 * Well actually it should for
2326 * Origin mode - RDB
32874aea 2327 */
887035a5 2328 term->curs.y = (term->dec_om ?
2329 term->marg_t : 0);
32874aea 2330 fix_cpos;
887035a5 2331 term->seen_disp_event = TRUE;
32874aea 2332 }
2333 }
2334 break;
2335 case 'm': /* set graphics rendition */
2336 {
2337 /*
887035a5 2338 * A VT100 without the AVO only had one
2339 * attribute, either underline or
2340 * reverse video depending on the
2341 * cursor type, this was selected by
2342 * CSI 7m.
32874aea 2343 *
2344 * case 2:
887035a5 2345 * This is sometimes DIM, eg on the
2346 * GIGI and Linux
32874aea 2347 * case 8:
4eeb7d09 2348 * This is sometimes INVIS various ANSI.
32874aea 2349 * case 21:
2350 * This like 22 disables BOLD, DIM and INVIS
2351 *
887035a5 2352 * The ANSI colours appear on any
2353 * terminal that has colour (obviously)
2354 * but the interaction between sgr0 and
2355 * the colours varies but is usually
2356 * related to the background colour
2357 * erase item. The interaction between
2358 * colour attributes and the mono ones
2359 * is also very implementation
2360 * dependent.
32874aea 2361 *
887035a5 2362 * The 39 and 49 attributes are likely
2363 * to be unimplemented.
32874aea 2364 */
2365 int i;
887035a5 2366 for (i = 0; i < term->esc_nargs; i++) {
2367 switch (def(term->esc_args[i], 0)) {
32874aea 2368 case 0: /* restore defaults */
887035a5 2369 term->curr_attr = ATTR_DEFAULT;
32874aea 2370 break;
2371 case 1: /* enable bold */
2372 compatibility(VT100AVO);
887035a5 2373 term->curr_attr |= ATTR_BOLD;
32874aea 2374 break;
2375 case 21: /* (enable double underline) */
2376 compatibility(OTHER);
2377 case 4: /* enable underline */
2378 compatibility(VT100AVO);
887035a5 2379 term->curr_attr |= ATTR_UNDER;
32874aea 2380 break;
2381 case 5: /* enable blink */
2382 compatibility(VT100AVO);
887035a5 2383 term->curr_attr |= ATTR_BLINK;
32874aea 2384 break;
2385 case 7: /* enable reverse video */
887035a5 2386 term->curr_attr |= ATTR_REVERSE;
32874aea 2387 break;
d3cb5465 2388 case 10: /* SCO acs off */
2389 compatibility(SCOANSI);
64734920 2390 if (term->cfg.no_remote_charset) break;
887035a5 2391 term->sco_acs = 0; break;
d3cb5465 2392 case 11: /* SCO acs on */
2393 compatibility(SCOANSI);
64734920 2394 if (term->cfg.no_remote_charset) break;
887035a5 2395 term->sco_acs = 1; break;
5dc6132d 2396 case 12: /* SCO acs on, |0x80 */
d3cb5465 2397 compatibility(SCOANSI);
64734920 2398 if (term->cfg.no_remote_charset) break;
887035a5 2399 term->sco_acs = 2; break;
32874aea 2400 case 22: /* disable bold */
2401 compatibility2(OTHER, VT220);
887035a5 2402 term->curr_attr &= ~ATTR_BOLD;
32874aea 2403 break;
2404 case 24: /* disable underline */
2405 compatibility2(OTHER, VT220);
887035a5 2406 term->curr_attr &= ~ATTR_UNDER;
32874aea 2407 break;
2408 case 25: /* disable blink */
2409 compatibility2(OTHER, VT220);
887035a5 2410 term->curr_attr &= ~ATTR_BLINK;
32874aea 2411 break;
2412 case 27: /* disable reverse video */
2413 compatibility2(OTHER, VT220);
887035a5 2414 term->curr_attr &= ~ATTR_REVERSE;
32874aea 2415 break;
2416 case 30:
2417 case 31:
2418 case 32:
2419 case 33:
2420 case 34:
2421 case 35:
2422 case 36:
2423 case 37:
2424 /* foreground */
887035a5 2425 term->curr_attr &= ~ATTR_FGMASK;
2426 term->curr_attr |=
2427 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
32874aea 2428 break;
37ca32ed 2429 case 90:
2430 case 91:
2431 case 92:
2432 case 93:
2433 case 94:
2434 case 95:
2435 case 96:
2436 case 97:
2437 /* xterm-style bright foreground */
2438 term->curr_attr &= ~ATTR_FGMASK;
2439 term->curr_attr |=
2440 ((term->esc_args[i] - 90 + 16)
2441 << ATTR_FGSHIFT);
2442 break;
32874aea 2443 case 39: /* default-foreground */
887035a5 2444 term->curr_attr &= ~ATTR_FGMASK;
2445 term->curr_attr |= ATTR_DEFFG;
32874aea 2446 break;
2447 case 40:
2448 case 41:
2449 case 42:
2450 case 43:
2451 case 44:
2452 case 45:
2453 case 46:
2454 case 47:
2455 /* background */
887035a5 2456 term->curr_attr &= ~ATTR_BGMASK;
2457 term->curr_attr |=
2458 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
32874aea 2459 break;
37ca32ed 2460 case 100:
2461 case 101:
2462 case 102:
2463 case 103:
2464 case 104:
2465 case 105:
2466 case 106:
2467 case 107:
2468 /* xterm-style bright background */
2469 term->curr_attr &= ~ATTR_BGMASK;
2470 term->curr_attr |=
2471 ((term->esc_args[i] - 100 + 16)
2472 << ATTR_BGSHIFT);
2473 break;
32874aea 2474 case 49: /* default-background */
887035a5 2475 term->curr_attr &= ~ATTR_BGMASK;
2476 term->curr_attr |= ATTR_DEFBG;
32874aea 2477 break;
2478 }
2479 }
887035a5 2480 if (term->use_bce)
2481 term->erase_char = (' ' | ATTR_ASCII |
2482 (term->curr_attr &
2483 (ATTR_FGMASK |
2484 ATTR_BGMASK)));
32874aea 2485 }
2486 break;
2487 case 's': /* save cursor */
887035a5 2488 save_cursor(term, TRUE);
32874aea 2489 break;
2490 case 'u': /* restore cursor */
887035a5 2491 save_cursor(term, FALSE);
2492 term->seen_disp_event = TRUE;
32874aea 2493 break;
2494 case 't': /* set page size - ie window height */
374330e2 2495 /*
32874aea 2496 * VT340/VT420 sequence DECSLPP, DEC only allows values
2497 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2498 * illegal values (eg first arg 1..9) for window changing
2499 * and reports.
2500 */
887035a5 2501 if (term->esc_nargs <= 1
2502 && (term->esc_args[0] < 1 ||
2503 term->esc_args[0] >= 24)) {
68f9b3d9 2504 compatibility(VT340TEXT);
64734920 2505 if (!term->cfg.no_remote_resize)
a8327734 2506 request_resize(term->frontend, term->cols,
887035a5 2507 def(term->esc_args[0], 24));
2508 deselect(term);
2509 } else if (term->esc_nargs >= 1 &&
2510 term->esc_args[0] >= 1 &&
2511 term->esc_args[0] < 24) {
68f9b3d9 2512 compatibility(OTHER);
2513
887035a5 2514 switch (term->esc_args[0]) {
68f9b3d9 2515 int x, y, len;
2516 char buf[80], *p;
2517 case 1:
a8327734 2518 set_iconic(term->frontend, FALSE);
68f9b3d9 2519 break;
2520 case 2:
a8327734 2521 set_iconic(term->frontend, TRUE);
68f9b3d9 2522 break;
2523 case 3:
887035a5 2524 if (term->esc_nargs >= 3) {
64734920 2525 if (!term->cfg.no_remote_resize)
a8327734 2526 move_window(term->frontend,
2527 def(term->esc_args[1], 0),
887035a5 2528 def(term->esc_args[2], 0));
68f9b3d9 2529 }
2530 break;
2531 case 4:
2532 /* We should resize the window to a given
2533 * size in pixels here, but currently our
2534 * resizing code isn't healthy enough to
2535 * manage it. */
2536 break;
2537 case 5:
a8327734 2538 /* move to top */
2539 set_zorder(term->frontend, TRUE);
68f9b3d9 2540 break;
2541 case 6:
a8327734 2542 /* move to bottom */
2543 set_zorder(term->frontend, FALSE);
68f9b3d9 2544 break;
2545 case 7:
a8327734 2546 refresh_window(term->frontend);
68f9b3d9 2547 break;
2548 case 8:
887035a5 2549 if (term->esc_nargs >= 3) {
64734920 2550 if (!term->cfg.no_remote_resize)
a8327734 2551 request_resize(term->frontend,
64734920 2552 def(term->esc_args[2], term->cfg.width),
2553 def(term->esc_args[1], term->cfg.height));
68f9b3d9 2554 }
2555 break;
2556 case 9:
887035a5 2557 if (term->esc_nargs >= 2)
a8327734 2558 set_zoomed(term->frontend,
2559 term->esc_args[1] ?
887035a5 2560 TRUE : FALSE);
68f9b3d9 2561 break;
2562 case 11:
b9d7bcad 2563 if (term->ldisc)
2564 ldisc_send(term->ldisc,
a8327734 2565 is_iconic(term->frontend) ?
2566 "\033[1t" : "\033[2t", 4, 0);
68f9b3d9 2567 break;
2568 case 13:
b9d7bcad 2569 if (term->ldisc) {
a8327734 2570 get_window_pos(term->frontend, &x, &y);
b9d7bcad 2571 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2572 ldisc_send(term->ldisc, buf, len, 0);
2573 }
68f9b3d9 2574 break;
2575 case 14:
b9d7bcad 2576 if (term->ldisc) {
a8327734 2577 get_window_pixels(term->frontend, &x, &y);
b9d7bcad 2578 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2579 ldisc_send(term->ldisc, buf, len, 0);
2580 }
68f9b3d9 2581 break;
2582 case 18:
b9d7bcad 2583 if (term->ldisc) {
2584 len = sprintf(buf, "\033[8;%d;%dt",
2585 term->rows, term->cols);
2586 ldisc_send(term->ldisc, buf, len, 0);
2587 }
68f9b3d9 2588 break;
2589 case 19:
2590 /*
2591 * Hmmm. Strictly speaking we
2592 * should return `the size of the
2593 * screen in characters', but
2594 * that's not easy: (a) window
2595 * furniture being what it is it's
2596 * hard to compute, and (b) in
2597 * resize-font mode maximising the
2598 * window wouldn't change the
2599 * number of characters. *shrug*. I
2600 * think we'll ignore it for the
2601 * moment and see if anyone
2602 * complains, and then ask them
2603 * what they would like it to do.
2604 */
2605 break;
2606 case 20:
7fcdebd3 2607 if (term->ldisc &&
2608 !term->cfg.no_remote_qtitle) {
a8327734 2609 p = get_window_title(term->frontend, TRUE);
b9d7bcad 2610 len = strlen(p);
2611 ldisc_send(term->ldisc, "\033]L", 3, 0);
2612 ldisc_send(term->ldisc, p, len, 0);
2613 ldisc_send(term->ldisc, "\033\\", 2, 0);
2614 }
68f9b3d9 2615 break;
2616 case 21:
7fcdebd3 2617 if (term->ldisc &&
2618 !term->cfg.no_remote_qtitle) {
a8327734 2619 p = get_window_title(term->frontend,FALSE);
b9d7bcad 2620 len = strlen(p);
2621 ldisc_send(term->ldisc, "\033]l", 3, 0);
2622 ldisc_send(term->ldisc, p, len, 0);
2623 ldisc_send(term->ldisc, "\033\\", 2, 0);
2624 }
68f9b3d9 2625 break;
2626 }
32874aea 2627 }
2628 break;
1a837633 2629 case 'S':
2630 compatibility(SCOANSI);
887035a5 2631 scroll(term, term->marg_t, term->marg_b,
2632 def(term->esc_args[0], 1), TRUE);
1a837633 2633 fix_cpos;
887035a5 2634 term->wrapnext = FALSE;
2635 term->seen_disp_event = TRUE;
1a837633 2636 break;
2637 case 'T':
2638 compatibility(SCOANSI);
887035a5 2639 scroll(term, term->marg_t, term->marg_b,
2640 -def(term->esc_args[0], 1), TRUE);
1a837633 2641 fix_cpos;
887035a5 2642 term->wrapnext = FALSE;
2643 term->seen_disp_event = TRUE;
1a837633 2644 break;
32874aea 2645 case ANSI('|', '*'):
2646 /* VT420 sequence DECSNLS
2647 * Set number of lines on screen
2648 * VT420 uses VGA like hardware and can support any size in
2649 * reasonable range (24..49 AIUI) with no default specified.
2650 */
2651 compatibility(VT420);
887035a5 2652 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
64734920 2653 if (!term->cfg.no_remote_resize)
a8327734 2654 request_resize(term->frontend, term->cols,
887035a5 2655 def(term->esc_args[0],
64734920 2656 term->cfg.height));
887035a5 2657 deselect(term);
32874aea 2658 }
2659 break;
2660 case ANSI('|', '$'):
2661 /* VT340/VT420 sequence DECSCPP
2662 * Set number of columns per page
2663 * Docs imply range is only 80 or 132, but I'll allow any.
2664 */
2665 compatibility(VT340TEXT);
887035a5 2666 if (term->esc_nargs <= 1) {
64734920 2667 if (!term->cfg.no_remote_resize)
a8327734 2668 request_resize(term->frontend,
2669 def(term->esc_args[0],
64734920 2670 term->cfg.width), term->rows);
887035a5 2671 deselect(term);
32874aea 2672 }
2673 break;
2674 case 'X': /* write N spaces w/o moving cursor */
2675 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2676 compatibility(ANSIMIN);
2677 {
887035a5 2678 int n = def(term->esc_args[0], 1);
32874aea 2679 pos cursplus;
887035a5 2680 unsigned long *p = term->cpos;
2681 if (n > term->cols - term->curs.x)
2682 n = term->cols - term->curs.x;
2683 cursplus = term->curs;
32874aea 2684 cursplus.x += n;
3c7366f8 2685 check_boundary(term, term->curs.x, term->curs.y);
2686 check_boundary(term, term->curs.x+n, term->curs.y);
887035a5 2687 check_selection(term, term->curs, cursplus);
32874aea 2688 while (n--)
887035a5 2689 *p++ = term->erase_char;
2690 term->seen_disp_event = TRUE;
32874aea 2691 }
2692 break;
2693 case 'x': /* report terminal characteristics */
2694 compatibility(VT100);
b9d7bcad 2695 if (term->ldisc) {
32874aea 2696 char buf[32];
887035a5 2697 int i = def(term->esc_args[0], 0);
32874aea 2698 if (i == 0 || i == 1) {
2699 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2700 buf[2] += i;
b9d7bcad 2701 ldisc_send(term->ldisc, buf, 20, 0);
32874aea 2702 }
2703 }
2704 break;
979f6987 2705 case 'Z': /* BackTab for xterm */
2706 compatibility(OTHER);
2707 {
887035a5 2708 int i = def(term->esc_args[0], 1);
2709 pos old_curs = term->curs;
979f6987 2710
887035a5 2711 for(;i>0 && term->curs.x>0; i--) {
979f6987 2712 do {
887035a5 2713 term->curs.x--;
2714 } while (term->curs.x >0 &&
2715 !term->tabs[term->curs.x]);
979f6987 2716 }
2717 fix_cpos;
887035a5 2718 check_selection(term, old_curs, term->curs);
979f6987 2719 }
2720 break;
32874aea 2721 case ANSI('L', '='):
2722 compatibility(OTHER);
887035a5 2723 term->use_bce = (term->esc_args[0] <= 0);
2724 term->erase_char = ERASE_CHAR;
2725 if (term->use_bce)
2726 term->erase_char = (' ' | ATTR_ASCII |
2727 (term->curr_attr &
2728 (ATTR_FGMASK | ATTR_BGMASK)));
32874aea 2729 break;
2730 case ANSI('E', '='):
2731 compatibility(OTHER);
887035a5 2732 term->blink_is_real = (term->esc_args[0] >= 1);
32874aea 2733 break;
2734 case ANSI('p', '"'):
887035a5 2735 /*
2736 * Allow the host to make this emulator a
2737 * 'perfect' VT102. This first appeared in
2738 * the VT220, but we do need to get back to
2739 * PuTTY mode so I won't check it.
e14a5a13 2740 *
4eeb7d09 2741 * The arg in 40..42,50 are a PuTTY extension.
32874aea 2742 * The 2nd arg, 8bit vs 7bit is not checked.
2743 *
887035a5 2744 * Setting VT102 mode should also change
2745 * the Fkeys to generate PF* codes as a
2746 * real VT102 has no Fkeys. The VT220 does
2747 * this, F11..F13 become ESC,BS,LF other
2748 * Fkeys send nothing.
32874aea 2749 *
2750 * Note ESC c will NOT change this!
374330e2 2751 */
32874aea 2752
887035a5 2753 switch (term->esc_args[0]) {
32874aea 2754 case 61:
887035a5 2755 term->compatibility_level &= ~TM_VTXXX;
2756 term->compatibility_level |= TM_VT102;
374330e2 2757 break;
32874aea 2758 case 62:
887035a5 2759 term->compatibility_level &= ~TM_VTXXX;
2760 term->compatibility_level |= TM_VT220;
32874aea 2761 break;
2762
2763 default:
887035a5 2764 if (term->esc_args[0] > 60 &&
2765 term->esc_args[0] < 70)
2766 term->compatibility_level |= TM_VTXXX;
32874aea 2767 break;
2768
2769 case 40:
887035a5 2770 term->compatibility_level &= TM_VTXXX;
374330e2 2771 break;
32874aea 2772 case 41:
887035a5 2773 term->compatibility_level = TM_PUTTY;
374330e2 2774 break;
32874aea 2775 case 42:
887035a5 2776 term->compatibility_level = TM_SCOANSI;
374330e2 2777 break;
32874aea 2778
2779 case ARG_DEFAULT:
887035a5 2780 term->compatibility_level = TM_PUTTY;
32874aea 2781 break;
2782 case 50:
2783 break;
2784 }
2785
2786 /* Change the response to CSI c */
887035a5 2787 if (term->esc_args[0] == 50) {
32874aea 2788 int i;
2789 char lbuf[64];
887035a5 2790 strcpy(term->id_string, "\033[?");
2791 for (i = 1; i < term->esc_nargs; i++) {
32874aea 2792 if (i != 1)
887035a5 2793 strcat(term->id_string, ";");
2794 sprintf(lbuf, "%d", term->esc_args[i]);
2795 strcat(term->id_string, lbuf);
32874aea 2796 }
887035a5 2797 strcat(term->id_string, "c");
32874aea 2798 }
2799#if 0
2800 /* Is this a good idea ?
2801 * Well we should do a soft reset at this point ...
2802 */
2803 if (!has_compat(VT420) && has_compat(VT100)) {
64734920 2804 if (!term->cfg.no_remote_resize) {
887035a5 2805 if (term->reset_132)
0d2086c5 2806 request_resize(132, 24);
2807 else
2808 request_resize(80, 24);
2809 }
374330e2 2810 }
32874aea 2811#endif
2812 break;
374330e2 2813 }
374330e2 2814 break;
32874aea 2815 case SEEN_OSC:
887035a5 2816 term->osc_w = FALSE;
32874aea 2817 switch (c) {
2818 case 'P': /* Linux palette sequence */
887035a5 2819 term->termstate = SEEN_OSC_P;
2820 term->osc_strlen = 0;
32874aea 2821 break;
2822 case 'R': /* Linux palette reset */
a8327734 2823 palette_reset(term->frontend);
887035a5 2824 term_invalidate(term);
2825 term->termstate = TOPLEVEL;
32874aea 2826 break;
2827 case 'W': /* word-set */
887035a5 2828 term->termstate = SEEN_OSC_W;
2829 term->osc_w = TRUE;
32874aea 2830 break;
2831 case '0':
2832 case '1':
2833 case '2':
2834 case '3':
2835 case '4':
2836 case '5':
2837 case '6':
2838 case '7':
2839 case '8':
2840 case '9':
887035a5 2841 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
32874aea 2842 break;
2843 case 'L':
2844 /*
2845 * Grotty hack to support xterm and DECterm title
2846 * sequences concurrently.
2847 */
887035a5 2848 if (term->esc_args[0] == 2) {
2849 term->esc_args[0] = 1;
32874aea 2850 break;
2851 }
2852 /* else fall through */
2853 default:
887035a5 2854 term->termstate = OSC_STRING;
2855 term->osc_strlen = 0;
e14a5a13 2856 }
2857 break;
32874aea 2858 case OSC_STRING:
2859 /*
2860 * This OSC stuff is EVIL. It takes just one character to get into
2861 * sysline mode and it's not initially obvious how to get out.
2862 * So I've added CR and LF as string aborts.
2863 * This shouldn't effect compatibility as I believe embedded
2864 * control characters are supposed to be interpreted (maybe?)
2865 * and they don't display anything useful anyway.
2866 *
2867 * -- RDB
e14a5a13 2868 */
92e23ad9 2869 if (c == '\012' || c == '\015') {
887035a5 2870 term->termstate = TOPLEVEL;
32874aea 2871 } else if (c == 0234 || c == '\007') {
2872 /*
2873 * These characters terminate the string; ST and BEL
2874 * terminate the sequence and trigger instant
2875 * processing of it, whereas ESC goes back to SEEN_ESC
2876 * mode unless it is followed by \, in which case it is
2877 * synonymous with ST in the first place.
2878 */
887035a5 2879 do_osc(term);
2880 term->termstate = TOPLEVEL;
32874aea 2881 } else if (c == '\033')
887035a5 2882 term->termstate = OSC_MAYBE_ST;
2883 else if (term->osc_strlen < OSC_STR_MAX)
2884 term->osc_string[term->osc_strlen++] = c;
374330e2 2885 break;
32874aea 2886 case SEEN_OSC_P:
374330e2 2887 {
887035a5 2888 int max = (term->osc_strlen == 0 ? 21 : 16);
32874aea 2889 int val;
2890 if (c >= '0' && c <= '9')
2891 val = c - '0';
2892 else if (c >= 'A' && c <= 'A' + max - 10)
2893 val = c - 'A' + 10;
2894 else if (c >= 'a' && c <= 'a' + max - 10)
2895 val = c - 'a' + 10;
2d466ffd 2896 else {
887035a5 2897 term->termstate = TOPLEVEL;
2d466ffd 2898 break;
2899 }
887035a5 2900 term->osc_string[term->osc_strlen++] = val;
2901 if (term->osc_strlen >= 7) {
a8327734 2902 palette_set(term->frontend, term->osc_string[0],
887035a5 2903 term->osc_string[1] * 16 + term->osc_string[2],
2904 term->osc_string[3] * 16 + term->osc_string[4],
2905 term->osc_string[5] * 16 + term->osc_string[6]);
2906 term_invalidate(term);
2907 term->termstate = TOPLEVEL;
374330e2 2908 }
2909 }
2910 break;
32874aea 2911 case SEEN_OSC_W:
2912 switch (c) {
2913 case '0':
2914 case '1':
2915 case '2':
2916 case '3':
2917 case '4':
2918 case '5':
2919 case '6':
2920 case '7':
2921 case '8':
2922 case '9':
887035a5 2923 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
32874aea 2924 break;
2925 default:
887035a5 2926 term->termstate = OSC_STRING;
2927 term->osc_strlen = 0;
ec55b220 2928 }
32874aea 2929 break;
32874aea 2930 case VT52_ESC:
887035a5 2931 term->termstate = TOPLEVEL;
2932 term->seen_disp_event = TRUE;
c9def1b8 2933 switch (c) {
32874aea 2934 case 'A':
887035a5 2935 move(term, term->curs.x, term->curs.y - 1, 1);
32874aea 2936 break;
2937 case 'B':
887035a5 2938 move(term, term->curs.x, term->curs.y + 1, 1);
32874aea 2939 break;
2940 case 'C':
887035a5 2941 move(term, term->curs.x + 1, term->curs.y, 1);
32874aea 2942 break;
2943 case 'D':
887035a5 2944 move(term, term->curs.x - 1, term->curs.y, 1);
32874aea 2945 break;
4eeb7d09 2946 /*
2947 * From the VT100 Manual
2948 * NOTE: The special graphics characters in the VT100
2949 * are different from those in the VT52
2950 *
2951 * From VT102 manual:
2952 * 137 _ Blank - Same
2953 * 140 ` Reserved - Humm.
2954 * 141 a Solid rectangle - Similar
2955 * 142 b 1/ - Top half of fraction for the
2956 * 143 c 3/ - subscript numbers below.
2957 * 144 d 5/
2958 * 145 e 7/
2959 * 146 f Degrees - Same
2960 * 147 g Plus or minus - Same
2961 * 150 h Right arrow
2962 * 151 i Ellipsis (dots)
2963 * 152 j Divide by
2964 * 153 k Down arrow
2965 * 154 l Bar at scan 0
2966 * 155 m Bar at scan 1
2967 * 156 n Bar at scan 2
2968 * 157 o Bar at scan 3 - Similar
2969 * 160 p Bar at scan 4 - Similar
2970 * 161 q Bar at scan 5 - Similar
2971 * 162 r Bar at scan 6 - Same
2972 * 163 s Bar at scan 7 - Similar
2973 * 164 t Subscript 0
2974 * 165 u Subscript 1
2975 * 166 v Subscript 2
2976 * 167 w Subscript 3
2977 * 170 x Subscript 4
2978 * 171 y Subscript 5
2979 * 172 z Subscript 6
2980 * 173 { Subscript 7
2981 * 174 | Subscript 8
2982 * 175 } Subscript 9
2983 * 176 ~ Paragraph
2984 *
2985 */
32874aea 2986 case 'F':
887035a5 2987 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
32874aea 2988 break;
2989 case 'G':
887035a5 2990 term->cset_attr[term->cset = 0] = ATTR_ASCII;
32874aea 2991 break;
2992 case 'H':
887035a5 2993 move(term, 0, 0, 0);
32874aea 2994 break;
2995 case 'I':
887035a5 2996 if (term->curs.y == 0)
2997 scroll(term, 0, term->rows - 1, -1, TRUE);
2998 else if (term->curs.y > 0)
2999 term->curs.y--;
32874aea 3000 fix_cpos;
887035a5 3001 term->wrapnext = FALSE;
32874aea 3002 break;
3003 case 'J':
887035a5 3004 erase_lots(term, FALSE, FALSE, TRUE);
3005 term->disptop = 0;
c9def1b8 3006 break;
32874aea 3007 case 'K':
887035a5 3008 erase_lots(term, TRUE, FALSE, TRUE);
32874aea 3009 break;
4eeb7d09 3010#if 0
32874aea 3011 case 'V':
3012 /* XXX Print cursor line */
3013 break;
3014 case 'W':
3015 /* XXX Start controller mode */
3016 break;
3017 case 'X':
3018 /* XXX Stop controller mode */
3019 break;
4eeb7d09 3020#endif
32874aea 3021 case 'Y':
887035a5 3022 term->termstate = VT52_Y1;
32874aea 3023 break;
3024 case 'Z':
b9d7bcad 3025 if (term->ldisc)
3026 ldisc_send(term->ldisc, "\033/Z", 3, 0);
32874aea 3027 break;
3028 case '=':
887035a5 3029 term->app_keypad_keys = TRUE;
32874aea 3030 break;
3031 case '>':
887035a5 3032 term->app_keypad_keys = FALSE;
32874aea 3033 break;
3034 case '<':
3035 /* XXX This should switch to VT100 mode not current or default
3036 * VT mode. But this will only have effect in a VT220+
3037 * emulation.
3038 */
887035a5 3039 term->vt52_mode = FALSE;
64734920 3040 term->blink_is_real = term->cfg.blinktext;
32874aea 3041 break;
4eeb7d09 3042#if 0
32874aea 3043 case '^':
3044 /* XXX Enter auto print mode */
3045 break;
3046 case '_':
3047 /* XXX Exit auto print mode */
3048 break;
3049 case ']':
3050 /* XXX Print screen */
3051 break;
4eeb7d09 3052#endif
3053
3054#ifdef VT52_PLUS
3055 case 'E':
3056 /* compatibility(ATARI) */
887035a5 3057 move(term, 0, 0, 0);
3058 erase_lots(term, FALSE, FALSE, TRUE);
3059 term->disptop = 0;
4eeb7d09 3060 break;
3061 case 'L':
3062 /* compatibility(ATARI) */
887035a5 3063 if (term->curs.y <= term->marg_b)
3064 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4eeb7d09 3065 break;
3066 case 'M':
3067 /* compatibility(ATARI) */
887035a5 3068 if (term->curs.y <= term->marg_b)
3069 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4eeb7d09 3070 break;
3071 case 'b':
3072 /* compatibility(ATARI) */
887035a5 3073 term->termstate = VT52_FG;
4eeb7d09 3074 break;
3075 case 'c':
3076 /* compatibility(ATARI) */
887035a5 3077 term->termstate = VT52_BG;
4eeb7d09 3078 break;
3079 case 'd':
3080 /* compatibility(ATARI) */
887035a5 3081 erase_lots(term, FALSE, TRUE, FALSE);
3082 term->disptop = 0;
4eeb7d09 3083 break;
3084 case 'e':
3085 /* compatibility(ATARI) */
887035a5 3086 term->cursor_on = TRUE;
4eeb7d09 3087 break;
3088 case 'f':
3089 /* compatibility(ATARI) */
887035a5 3090 term->cursor_on = FALSE;
4eeb7d09 3091 break;
3092 /* case 'j': Save cursor position - broken on ST */
3093 /* case 'k': Restore cursor position */
3094 case 'l':
3095 /* compatibility(ATARI) */
887035a5 3096 erase_lots(term, TRUE, TRUE, TRUE);
3097 term->curs.x = 0;
3098 term->wrapnext = FALSE;
4eeb7d09 3099 fix_cpos;
3100 break;
3101 case 'o':
3102 /* compatibility(ATARI) */
887035a5 3103 erase_lots(term, TRUE, TRUE, FALSE);
4eeb7d09 3104 break;
3105 case 'p':
3106 /* compatibility(ATARI) */
887035a5 3107 term->curr_attr |= ATTR_REVERSE;
4eeb7d09 3108 break;
3109 case 'q':
3110 /* compatibility(ATARI) */
887035a5 3111 term->curr_attr &= ~ATTR_REVERSE;
4eeb7d09 3112 break;
3113 case 'v': /* wrap Autowrap on - Wyse style */
3114 /* compatibility(ATARI) */
887035a5 3115 term->wrap = 1;
4eeb7d09 3116 break;
3117 case 'w': /* Autowrap off */
3118 /* compatibility(ATARI) */
887035a5 3119 term->wrap = 0;
4eeb7d09 3120 break;
3121
3122 case 'R':
3123 /* compatibility(OTHER) */
887035a5 3124 term->vt52_bold = FALSE;
3125 term->curr_attr = ATTR_DEFAULT;
3126 if (term->use_bce)
3127 term->erase_char = (' ' | ATTR_ASCII |
3128 (term->curr_attr &
3129 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 3130 break;
3131 case 'S':
3132 /* compatibility(VI50) */
887035a5 3133 term->curr_attr |= ATTR_UNDER;
4eeb7d09 3134 break;
3135 case 'W':
3136 /* compatibility(VI50) */
887035a5 3137 term->curr_attr &= ~ATTR_UNDER;
4eeb7d09 3138 break;
3139 case 'U':
3140 /* compatibility(VI50) */
887035a5 3141 term->vt52_bold = TRUE;
3142 term->curr_attr |= ATTR_BOLD;
4eeb7d09 3143 break;
3144 case 'T':
3145 /* compatibility(VI50) */
887035a5 3146 term->vt52_bold = FALSE;
3147 term->curr_attr &= ~ATTR_BOLD;
4eeb7d09 3148 break;
3149#endif
c9def1b8 3150 }
e14a5a13 3151 break;
32874aea 3152 case VT52_Y1:
887035a5 3153 term->termstate = VT52_Y2;
3154 move(term, term->curs.x, c - ' ', 0);
e14a5a13 3155 break;
32874aea 3156 case VT52_Y2:
887035a5 3157 term->termstate = TOPLEVEL;
3158 move(term, c - ' ', term->curs.y, 0);
e14a5a13 3159 break;
4eeb7d09 3160
3161#ifdef VT52_PLUS
3162 case VT52_FG:
887035a5 3163 term->termstate = TOPLEVEL;
3164 term->curr_attr &= ~ATTR_FGMASK;
3165 term->curr_attr &= ~ATTR_BOLD;
3166 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
3167 if ((c & 0x8) || term->vt52_bold)
3168 term->curr_attr |= ATTR_BOLD;
3169
3170 if (term->use_bce)
3171 term->erase_char = (' ' | ATTR_ASCII |
3172 (term->curr_attr &
3173 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 3174 break;
3175 case VT52_BG:
887035a5 3176 term->termstate = TOPLEVEL;
3177 term->curr_attr &= ~ATTR_BGMASK;
3178 term->curr_attr &= ~ATTR_BLINK;
3179 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
4eeb7d09 3180
3181 /* Note: bold background */
3182 if (c & 0x8)
887035a5 3183 term->curr_attr |= ATTR_BLINK;
4eeb7d09 3184
887035a5 3185 if (term->use_bce)
3186 term->erase_char = (' ' | ATTR_ASCII |
3187 (term->curr_attr &
3188 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 3189 break;
3190#endif
2d466ffd 3191 default: break; /* placate gcc warning about enum use */
e14a5a13 3192 }
887035a5 3193 if (term->selstate != NO_SELECTION) {
3194 pos cursplus = term->curs;
4facdf84 3195 incpos(cursplus);
887035a5 3196 check_selection(term, term->curs, cursplus);
4facdf84 3197 }
374330e2 3198 }
b44b307a 3199
887035a5 3200 term_print_flush(term);
374330e2 3201}
3202
4eeb7d09 3203#if 0
374330e2 3204/*
3205 * Compare two lines to determine whether they are sufficiently
3206 * alike to scroll-optimise one to the other. Return the degree of
3207 * similarity.
3208 */
887035a5 3209static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
32874aea 3210{
374330e2 3211 int i, n;
3212
887035a5 3213 for (i = n = 0; i < term->cols; i++)
374330e2 3214 n += (*a++ == *b++);
3215 return n;
3216}
4eeb7d09 3217#endif
374330e2 3218
3219/*
3220 * Given a context, update the window. Out of paranoia, we don't
3221 * allow WM_PAINT responses to do scrolling optimisations.
3222 */
887035a5 3223static void do_paint(Terminal *term, Context ctx, int may_optimise)
32874aea 3224{
3c7366f8 3225 int i, j, our_curs_y, our_curs_x;
4eeb7d09 3226 unsigned long rv, cursor;
4facdf84 3227 pos scrpos;
374330e2 3228 char ch[1024];
4eeb7d09 3229 long cursor_background = ERASE_CHAR;
286c6b86 3230 unsigned long ticks;
341eb978 3231#ifdef OPTIMISE_SCROLL
3232 struct scrollregion *sr;
3233#endif /* OPTIMISE_SCROLL */
374330e2 3234
156686ef 3235 /*
3236 * Check the visual bell state.
3237 */
887035a5 3238 if (term->in_vbell) {
f7f27309 3239 ticks = GETTICKCOUNT();
887035a5 3240 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
3241 term->in_vbell = FALSE;
286c6b86 3242 }
156686ef 3243
887035a5 3244 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4eeb7d09 3245
156686ef 3246 /* Depends on:
3247 * screen array, disptop, scrtop,
3248 * selection, rv,
3249 * cfg.blinkpc, blink_is_real, tblinker,
4eeb7d09 3250 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
156686ef 3251 */
4eeb7d09 3252
3253 /* Has the cursor position or type changed ? */
887035a5 3254 if (term->cursor_on) {
3255 if (term->has_focus) {
64734920 3256 if (term->blinker || !term->cfg.blink_cur)
4eeb7d09 3257 cursor = TATTR_ACTCURS;
32874aea 3258 else
3259 cursor = 0;
3260 } else
4eeb7d09 3261 cursor = TATTR_PASCURS;
887035a5 3262 if (term->wrapnext)
4eeb7d09 3263 cursor |= TATTR_RIGHTCURS;
32874aea 3264 } else
156686ef 3265 cursor = 0;
887035a5 3266 our_curs_y = term->curs.y - term->disptop;
3c7366f8 3267 {
3268 /*
3269 * Adjust the cursor position in the case where it's
3270 * resting on the right-hand half of a CJK wide character.
3271 * xterm's behaviour here, which seems adequate to me, is
3272 * to display the cursor covering the _whole_ character,
3273 * exactly as if it were one space to the left.
3274 */
3275 unsigned long *ldata = lineptr(term->curs.y);
3276 our_curs_x = term->curs.x;
3277 if (our_curs_x > 0 &&
3278 (ldata[our_curs_x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3279 our_curs_x--;
3280 }
887035a5 3281
3282 if (term->dispcurs && (term->curstype != cursor ||
3283 term->dispcurs !=
3284 term->disptext + our_curs_y * (term->cols + 1) +
3c7366f8 3285 our_curs_x)) {
887035a5 3286 if (term->dispcurs > term->disptext &&
3c7366f8 3287 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
887035a5 3288 term->dispcurs[-1] |= ATTR_INVALID;
3289 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3290 term->dispcurs[1] |= ATTR_INVALID;
3291 *term->dispcurs |= ATTR_INVALID;
3292 term->curstype = 0;
4eeb7d09 3293 }
887035a5 3294 term->dispcurs = NULL;
4eeb7d09 3295
341eb978 3296#ifdef OPTIMISE_SCROLL
3297 /* Do scrolls */
3298 sr = term->scrollhead;
3299 while (sr) {
3300 struct scrollregion *next = sr->next;
3301 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
3302 sfree(sr);
3303 sr = next;
3304 }
3305 term->scrollhead = term->scrolltail = NULL;
3306#endif /* OPTIMISE_SCROLL */
3307
4eeb7d09 3308 /* The normal screen data */
887035a5 3309 for (i = 0; i < term->rows; i++) {
4facdf84 3310 unsigned long *ldata;
3311 int lattr;
6908fed7 3312 int idx, dirty_line, dirty_run, selected;
4eeb7d09 3313 unsigned long attr = 0;
3314 int updated_line = 0;
3315 int start = 0;
3316 int ccount = 0;
3317 int last_run_dirty = 0;
3318
887035a5 3319 scrpos.y = i + term->disptop;
4facdf84 3320 ldata = lineptr(scrpos.y);
887035a5 3321 lattr = (ldata[term->cols] & LATTR_MODE);
4eeb7d09 3322
887035a5 3323 idx = i * (term->cols + 1);
3324 dirty_run = dirty_line = (ldata[term->cols] !=
3325 term->disptext[idx + term->cols]);
3326 term->disptext[idx + term->cols] = ldata[term->cols];
4eeb7d09 3327
887035a5 3328 for (j = 0; j < term->cols; j++, idx++) {
4eeb7d09 3329 unsigned long tattr, tchar;
3330 unsigned long *d = ldata + j;
3331 int break_run;
4facdf84 3332 scrpos.x = j;
32874aea 3333
4eeb7d09 3334 tchar = (*d & (CHAR_MASK | CSET_MASK));
3335 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
3336 switch (tchar & CSET_MASK) {
3337 case ATTR_ASCII:
21d2b241 3338 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4eeb7d09 3339 break;
3340 case ATTR_LINEDRW:
21d2b241 3341 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4eeb7d09 3342 break;
d3cb5465 3343 case ATTR_SCOACS:
21d2b241 3344 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
d3cb5465 3345 break;
4eeb7d09 3346 }
3347 tattr |= (tchar & CSET_MASK);
3348 tchar &= CHAR_MASK;
5a73255e 3349 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3350 tattr |= ATTR_WIDE;
4eeb7d09 3351
3352 /* Video reversing things */
f278d6f8 3353 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3354 if (term->seltype == LEXICOGRAPHIC)
3355 selected = (posle(term->selstart, scrpos) &&
3356 poslt(scrpos, term->selend));
3357 else
3358 selected = (posPle(term->selstart, scrpos) &&
3359 posPlt(scrpos, term->selend));
3360 } else
3361 selected = FALSE;
4eeb7d09 3362 tattr = (tattr ^ rv
6908fed7 3363 ^ (selected ? ATTR_REVERSE : 0));
4eeb7d09 3364
3365 /* 'Real' blinking ? */
887035a5 3366 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3367 if (term->has_focus && term->tblinker) {
fc6f0fc2 3368 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
c9def1b8 3369 }
4eeb7d09 3370 tattr &= ~ATTR_BLINK;
c9def1b8 3371 }
374330e2 3372
5a73255e 3373 /*
3374 * Check the font we'll _probably_ be using to see if
3375 * the character is wide when we don't want it to be.
3376 */
887035a5 3377 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
5a73255e 3378 if ((tattr & ATTR_WIDE) == 0 &&
2102eb8a 3379 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
5a73255e 3380 tattr |= ATTR_NARROW;
887035a5 3381 } else if (term->disptext[idx]&ATTR_NARROW)
5a73255e 3382 tattr |= ATTR_NARROW;
3383
4eeb7d09 3384 /* Cursor here ? Save the 'background' */
3c7366f8 3385 if (i == our_curs_y && j == our_curs_x) {
4eeb7d09 3386 cursor_background = tattr | tchar;
887035a5 3387 term->dispcurs = term->disptext + idx;
4eeb7d09 3388 }
374330e2 3389
887035a5 3390 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
4eeb7d09 3391 dirty_line = TRUE;
3392
2647b103 3393 break_run = (((tattr ^ attr) & term->attr_mask) ||
3394 j - start >= sizeof(ch));
4eeb7d09 3395
3396 /* Special hack for VT100 Linedraw glyphs */
3397 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3398 && tchar <= 0xBD) break_run = TRUE;
3399
21d2b241 3400 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
887035a5 3401 if ((tchar | tattr) == term->disptext[idx])
4eeb7d09 3402 break_run = TRUE;
3403 else if (!dirty_run && ccount == 1)
3404 break_run = TRUE;
374330e2 3405 }
4eeb7d09 3406
3407 if (break_run) {
3408 if ((dirty_run || last_run_dirty) && ccount > 0) {
3409 do_text(ctx, start, i, ch, ccount, attr, lattr);
3410 updated_line = 1;
3411 }
3412 start = j;
3413 ccount = 0;
3414 attr = tattr;
21d2b241 3415 if (term->ucsdata->dbcs_screenfont)
4eeb7d09 3416 last_run_dirty = dirty_run;
3417 dirty_run = dirty_line;
3418 }
3419
887035a5 3420 if ((tchar | tattr) != term->disptext[idx])
4eeb7d09 3421 dirty_run = TRUE;
3422 ch[ccount++] = (char) tchar;
887035a5 3423 term->disptext[idx] = tchar | tattr;
4eeb7d09 3424
3425 /* If it's a wide char step along to the next one. */
3426 if (tattr & ATTR_WIDE) {
887035a5 3427 if (++j < term->cols) {
4eeb7d09 3428 idx++;
3429 d++;
3c7366f8 3430 /*
3431 * By construction above, the cursor should not
3432 * be on the right-hand half of this character.
3433 * Ever.
3434 */
3435 assert(!(i == our_curs_y && j == our_curs_x));
887035a5 3436 if (term->disptext[idx] != *d)
4eeb7d09 3437 dirty_run = TRUE;
887035a5 3438 term->disptext[idx] = *d;
374330e2 3439 }
374330e2 3440 }
4eeb7d09 3441 }
3442 if (dirty_run && ccount > 0) {
3443 do_text(ctx, start, i, ch, ccount, attr, lattr);
3444 updated_line = 1;
3445 }
3446
3447 /* Cursor on this line ? (and changed) */
887035a5 3448 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
4eeb7d09 3449 ch[0] = (char) (cursor_background & CHAR_MASK);
3450 attr = (cursor_background & ATTR_MASK) | cursor;
3c7366f8 3451 do_cursor(ctx, our_curs_x, i, ch, 1, attr, lattr);
887035a5 3452 term->curstype = cursor;
374330e2 3453 }
3454 }
3455}
3456
3457/*
e14a5a13 3458 * Flick the switch that says if blinking things should be shown or hidden.
3459 */
3460
887035a5 3461void term_blink(Terminal *term, int flg)
32874aea 3462{
e14a5a13 3463 long now, blink_diff;
3464
f7f27309 3465 now = GETTICKCOUNT();
887035a5 3466 blink_diff = now - term->last_tblink;
c9def1b8 3467
1d3989ed 3468 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3469 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
887035a5 3470 term->last_tblink = now;
3471 term->tblinker = !term->tblinker;
c9def1b8 3472 }
3473
e14a5a13 3474 if (flg) {
887035a5 3475 term->blinker = 1;
3476 term->last_blink = now;
e14a5a13 3477 return;
32874aea 3478 }
e14a5a13 3479
887035a5 3480 blink_diff = now - term->last_blink;
e14a5a13 3481
f7f27309 3482 /* Make sure the cursor blinks no faster than system blink rate */
3483 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
32874aea 3484 return;
3485
887035a5 3486 term->last_blink = now;
3487 term->blinker = !term->blinker;
e14a5a13 3488}
3489
3490/*
374330e2 3491 * Invalidate the whole screen so it will be repainted in full.
3492 */
887035a5 3493void term_invalidate(Terminal *term)
32874aea 3494{
374330e2 3495 int i;
3496
887035a5 3497 for (i = 0; i < term->rows * (term->cols + 1); i++)
3498 term->disptext[i] = ATTR_INVALID;
374330e2 3499}
3500
3501/*
3502 * Paint the window in response to a WM_PAINT message.
3503 */
887035a5 3504void term_paint(Terminal *term, Context ctx,
c1b55581 3505 int left, int top, int right, int bottom, int immediately)
32874aea 3506{
5a73255e 3507 int i, j;
3508 if (left < 0) left = 0;
3509 if (top < 0) top = 0;
887035a5 3510 if (right >= term->cols) right = term->cols-1;
3511 if (bottom >= term->rows) bottom = term->rows-1;
3512
3513 for (i = top; i <= bottom && i < term->rows; i++) {
3514 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3515 LATTR_MODE) == LATTR_NORM)
3516 for (j = left; j <= right && j < term->cols; j++)
3517 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
c9def1b8 3518 else
887035a5 3519 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3520 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
c9def1b8 3521 }
374330e2 3522
e14a5a13 3523 /* This should happen soon enough, also for some reason it sometimes
3524 * fails to actually do anything when re-sizing ... painting the wrong
3525 * window perhaps ?
32874aea 3526 */
c1b55581 3527 if (immediately)
887035a5 3528 do_paint (term, ctx, FALSE);
374330e2 3529}
3530
3531/*
3532 * Attempt to scroll the scrollback. The second parameter gives the
3533 * position we want to scroll to; the first is +1 to denote that
3534 * this position is relative to the beginning of the scrollback, -1
3535 * to denote it is relative to the end, and 0 to denote that it is
3536 * relative to the current position.
3537 */
887035a5 3538void term_scroll(Terminal *term, int rel, int where)
32874aea 3539{
876e5d5e 3540 int sbtop = -sblines(term);
37d2a505 3541#ifdef OPTIMISE_SCROLL
3542 int olddisptop = term->disptop;
3543 int shift;
3544#endif /* OPTIMISE_SCROLL */
887035a5 3545
3546 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3547 if (term->disptop < sbtop)
3548 term->disptop = sbtop;
3549 if (term->disptop > 0)
3550 term->disptop = 0;
3551 update_sbar(term);
37d2a505 3552#ifdef OPTIMISE_SCROLL
3553 shift = (term->disptop - olddisptop);
3554 if (shift < term->rows && shift > -term->rows)
3555 scroll_display(term, 0, term->rows - 1, shift);
3556#endif /* OPTIMISE_SCROLL */
887035a5 3557 term_update(term);
374330e2 3558}
3559
c076966d 3560static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
32874aea 3561{
4eeb7d09 3562 wchar_t *workbuf;
3563 wchar_t *wbptr; /* where next char goes within workbuf */
6908fed7 3564 int old_top_x;
32874aea 3565 int wblen = 0; /* workbuf len */
3566 int buflen; /* amount of memory allocated to workbuf */
bc1235d4 3567
4eeb7d09 3568 buflen = 5120; /* Default size */
3d88e64d 3569 workbuf = snewn(buflen, wchar_t);
4eeb7d09 3570 wbptr = workbuf; /* start filling here */
6908fed7 3571 old_top_x = top.x; /* needed for rect==1 */
bc1235d4 3572
4facdf84 3573 while (poslt(top, bottom)) {
bc1235d4 3574 int nl = FALSE;
4facdf84 3575 unsigned long *ldata = lineptr(top.y);
260f3dec 3576 pos nlpos;
4facdf84 3577
6908fed7 3578 /*
3579 * nlpos will point at the maximum position on this line we
3580 * should copy up to. So we start it at the end of the
3581 * line...
3582 */
4facdf84 3583 nlpos.y = top.y;
887035a5 3584 nlpos.x = term->cols;
bc1235d4 3585
6908fed7 3586 /*
3587 * ... move it backwards if there's unused space at the end
3588 * of the line (and also set `nl' if this is the case,
3589 * because in normal selection mode this means we need a
3590 * newline at the end)...
3591 */
887035a5 3592 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
4eeb7d09 3593 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3594 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3595 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3596 && poslt(top, nlpos))
3597 decpos(nlpos);
4facdf84 3598 if (poslt(nlpos, bottom))
bc1235d4 3599 nl = TRUE;
3c7366f8 3600 } else if (ldata[term->cols] & LATTR_WRAPPED2) {
3601 /* Ignore the last char on the line in a WRAPPED2 line. */
3602 decpos(nlpos);
bc1235d4 3603 }
6908fed7 3604
3605 /*
3606 * ... and then clip it to the terminal x coordinate if
3607 * we're doing rectangular selection. (In this case we
3608 * still did the above, so that copying e.g. the right-hand
3609 * column from a table doesn't fill with spaces on the
3610 * right.)
3611 */
3612 if (rect) {
3613 if (nlpos.x > bottom.x)
3614 nlpos.x = bottom.x;
3615 nl = (top.y < bottom.y);
3616 }
3617
4facdf84 3618 while (poslt(top, bottom) && poslt(top, nlpos)) {
4eeb7d09 3619#if 0
3620 char cbuf[16], *p;
3621 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3622#else
3623 wchar_t cbuf[16], *p;
3624 int uc = (ldata[top.x] & 0xFFFF);
3625 int set, c;
3626
3627 if (uc == UCSWIDE) {
3628 top.x++;
3629 continue;
3630 }
3631
3632 switch (uc & CSET_MASK) {
3633 case ATTR_LINEDRW:
64734920 3634 if (!term->cfg.rawcnp) {
21d2b241 3635 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4eeb7d09 3636 break;
32874aea 3637 }
4eeb7d09 3638 case ATTR_ASCII:
21d2b241 3639 uc = term->ucsdata->unitab_line[uc & 0xFF];
4eeb7d09 3640 break;
d3cb5465 3641 case ATTR_SCOACS:
21d2b241 3642 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
d3cb5465 3643 break;
d3a22f79 3644 }
4eeb7d09 3645 switch (uc & CSET_MASK) {
3646 case ATTR_ACP:
21d2b241 3647 uc = term->ucsdata->unitab_font[uc & 0xFF];
4eeb7d09 3648 break;
3649 case ATTR_OEMCP:
21d2b241 3650 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4eeb7d09 3651 break;
3652 }
3653
3654 set = (uc & CSET_MASK);
3655 c = (uc & CHAR_MASK);
3656 cbuf[0] = uc;
3657 cbuf[1] = 0;
3658
3659 if (DIRECT_FONT(uc)) {
3660 if (c >= ' ' && c != 0x7F) {
e63ae276 3661 char buf[4];
4eeb7d09 3662 WCHAR wbuf[4];
3663 int rv;
21d2b241 3664 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
4eeb7d09 3665 buf[0] = c;
7b966c9b 3666 buf[1] = (char) (0xFF & ldata[top.x + 1]);
21d2b241 3667 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
4eeb7d09 3668 top.x++;
3669 } else {
3670 buf[0] = c;
21d2b241 3671 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
4eeb7d09 3672 }
bc1235d4 3673
4eeb7d09 3674 if (rv > 0) {
3675 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3676 cbuf[rv] = 0;
d3a22f79 3677 }
d3a22f79 3678 }
4eeb7d09 3679 }
3680#endif
3681
3682 for (p = cbuf; *p; p++) {
3683 /* Enough overhead for trailing NL and nul */
3684 if (wblen >= buflen - 16) {
3d88e64d 3685 buflen += 100;
3686 workbuf = sresize(workbuf, buflen, wchar_t);
4eeb7d09 3687 wbptr = workbuf + wblen;
3688 }
3689 wblen++;
3690 *wbptr++ = *p;
bc1235d4 3691 }
4facdf84 3692 top.x++;
bc1235d4 3693 }
3694 if (nl) {
3695 int i;
4eeb7d09 3696 for (i = 0; i < sel_nl_sz; i++) {
32874aea 3697 wblen++;
bc1235d4 3698 *wbptr++ = sel_nl[i];
3699 }
3700 }
4facdf84 3701 top.y++;
6908fed7 3702 top.x = rect ? old_top_x : 0;
bc1235d4 3703 }
e6346999 3704#if SELECTION_NUL_TERMINATED
4eeb7d09 3705 wblen++;
3706 *wbptr++ = 0;
e6346999 3707#endif
c076966d 3708 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
32874aea 3709 if (buflen > 0) /* indicates we allocated this buffer */
bc1235d4 3710 sfree(workbuf);
bc1235d4 3711}
4eeb7d09 3712
887035a5 3713void term_copyall(Terminal *term)
32874aea 3714{
4facdf84 3715 pos top;
876e5d5e 3716 top.y = -sblines(term);
4facdf84 3717 top.x = 0;
c076966d 3718 clipme(term, top, term->curs, 0, TRUE);
4eeb7d09 3719}
3720
3721/*
887035a5 3722 * The wordness array is mainly for deciding the disposition of the
3723 * US-ASCII characters.
4eeb7d09 3724 */
887035a5 3725static int wordtype(Terminal *term, int uc)
4eeb7d09 3726{
b9d7bcad 3727 struct ucsword {
4eeb7d09 3728 int start, end, ctype;
b9d7bcad 3729 };
3730 static const struct ucsword ucs_words[] = {
4eeb7d09 3731 {
3732 128, 160, 0}, {
3733 161, 191, 1}, {
3734 215, 215, 1}, {
3735 247, 247, 1}, {
3736 0x037e, 0x037e, 1}, /* Greek question mark */
3737 {
3738 0x0387, 0x0387, 1}, /* Greek ano teleia */
3739 {
3740 0x055a, 0x055f, 1}, /* Armenian punctuation */
3741 {
3742 0x0589, 0x0589, 1}, /* Armenian full stop */
3743 {
3744 0x0700, 0x070d, 1}, /* Syriac punctuation */
3745 {
3746 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3747 {
3748 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3749 {
3750 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3751 {
3752 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3753 {
3754 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3755 {
3756 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3757 {
3758 0x2000, 0x200a, 0}, /* Various spaces */
3759 {
3760 0x2070, 0x207f, 2}, /* superscript */
3761 {
3762 0x2080, 0x208f, 2}, /* subscript */
3763 {
3764 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3765 {
3766 0x3000, 0x3000, 0}, /* ideographic space */
3767 {
3768 0x3001, 0x3020, 1}, /* ideographic punctuation */
3769 {
3770 0x303f, 0x309f, 3}, /* Hiragana */
3771 {
3772 0x30a0, 0x30ff, 3}, /* Katakana */
3773 {
3774 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3775 {
3776 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3777 {
3778 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3779 {
3780 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3781 {
3782 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3783 {
3784 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3785 {
3786 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3787 {
3788 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3789 {
3790 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3791 {
3792 0, 0, 0}
3793 };
b9d7bcad 3794 const struct ucsword *wptr;
4eeb7d09 3795
3796 uc &= (CSET_MASK | CHAR_MASK);
3797
3798 switch (uc & CSET_MASK) {
3799 case ATTR_LINEDRW:
21d2b241 3800 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4eeb7d09 3801 break;
3802 case ATTR_ASCII:
21d2b241 3803 uc = term->ucsdata->unitab_line[uc & 0xFF];
4eeb7d09 3804 break;
d3cb5465 3805 case ATTR_SCOACS:
21d2b241 3806 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
d3cb5465 3807 break;
4eeb7d09 3808 }
3809 switch (uc & CSET_MASK) {
3810 case ATTR_ACP:
21d2b241 3811 uc = term->ucsdata->unitab_font[uc & 0xFF];
4eeb7d09 3812 break;
3813 case ATTR_OEMCP:
21d2b241 3814 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4eeb7d09 3815 break;
3816 }
3817
5a73255e 3818 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3819 * fail as there's such a thing as a double width space. :-(
3820 */
21d2b241 3821 if (term->ucsdata->dbcs_screenfont &&
3822 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5a73255e 3823 return (uc != ' ');
3824
4eeb7d09 3825 if (uc < 0x80)
887035a5 3826 return term->wordness[uc];
4eeb7d09 3827
3828 for (wptr = ucs_words; wptr->start; wptr++) {
3829 if (uc >= wptr->start && uc <= wptr->end)
3830 return wptr->ctype;
3831 }
3832
3833 return 2;
bc1235d4 3834}
3835
374330e2 3836/*
3837 * Spread the selection outwards according to the selection mode.
3838 */
887035a5 3839static pos sel_spread_half(Terminal *term, pos p, int dir)
32874aea 3840{
4facdf84 3841 unsigned long *ldata;
374330e2 3842 short wvalue;
876e5d5e 3843 int topy = -sblines(term);
374330e2 3844
4facdf84 3845 ldata = lineptr(p.y);
374330e2 3846
887035a5 3847 switch (term->selmode) {
374330e2 3848 case SM_CHAR:
3849 /*
3850 * In this mode, every character is a separate unit, except
3851 * for runs of spaces at the end of a non-wrapping line.
3852 */
887035a5 3853 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3854 unsigned long *q = ldata + term->cols;
4facdf84 3855 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
374330e2 3856 q--;
887035a5 3857 if (q == ldata + term->cols)
374330e2 3858 q--;
32874aea 3859 if (p.x >= q - ldata)
887035a5 3860 p.x = (dir == -1 ? q - ldata : term->cols - 1);
374330e2 3861 }
3862 break;
3863 case SM_WORD:
3864 /*
3865 * In this mode, the units are maximal runs of characters
3866 * whose `wordness' has the same value.
3867 */
3c7366f8 3868 wvalue = wordtype(term, UCSGET(ldata, p.x));
374330e2 3869 if (dir == +1) {
50ab4088 3870 while (1) {
3c7366f8 3871 int maxcols = (ldata[term->cols] & LATTR_WRAPPED2 ?
3872 term->cols-1 : term->cols);
3873 if (p.x < maxcols-1) {
3874 if (wordtype(term, UCSGET(ldata, p.x + 1)) == wvalue)
50ab4088 3875 p.x++;
3876 else
3877 break;
3878 } else {
887035a5 3879 if (ldata[term->cols] & LATTR_WRAPPED) {
50ab4088 3880 unsigned long *ldata2;
3881 ldata2 = lineptr(p.y+1);
3c7366f8 3882 if (wordtype(term, UCSGET(ldata2, 0)) == wvalue) {
50ab4088 3883 p.x = 0;
3884 p.y++;
3885 ldata = ldata2;
3886 } else
3887 break;
3888 } else
3889 break;
3890 }
3891 }
374330e2 3892 } else {
50ab4088 3893 while (1) {
3894 if (p.x > 0) {
3c7366f8 3895 if (wordtype(term, UCSGET(ldata, p.x - 1)) == wvalue)
50ab4088 3896 p.x--;
3897 else
3898 break;
3899 } else {
3900 unsigned long *ldata2;
3c7366f8 3901 int maxcols;
50ab4088 3902 if (p.y <= topy)
3903 break;
3904 ldata2 = lineptr(p.y-1);
3c7366f8 3905 maxcols = (ldata2[term->cols] & LATTR_WRAPPED2 ?
3906 term->cols-1 : term->cols);
3907 if (ldata2[term->cols] & LATTR_WRAPPED) {
3908 if (wordtype(term, UCSGET(ldata2, maxcols-1))
3909 == wvalue) {
3910 p.x = maxcols-1;
3911 p.y--;
3912 ldata = ldata2;
3913 } else
3914 break;
50ab4088 3915 } else
3916 break;
3917 }
3918 }
374330e2 3919 }
3920 break;
3921 case SM_LINE:
3922 /*
3923 * In this mode, every line is a unit.
3924 */
887035a5 3925 p.x = (dir == -1 ? 0 : term->cols - 1);
374330e2 3926 break;
3927 }
3928 return p;
3929}
3930
887035a5 3931static void sel_spread(Terminal *term)
32874aea 3932{
887035a5 3933 if (term->seltype == LEXICOGRAPHIC) {
3934 term->selstart = sel_spread_half(term, term->selstart, -1);
3935 decpos(term->selend);
3936 term->selend = sel_spread_half(term, term->selend, +1);
3937 incpos(term->selend);
6908fed7 3938 }
374330e2 3939}
3940
887035a5 3941void term_do_paste(Terminal *term)
568dd02f 3942{
3943 wchar_t *data;
3944 int len;
3945
a8327734 3946 get_clip(term->frontend, &data, &len);
2cb50250 3947 if (data && len > 0) {
568dd02f 3948 wchar_t *p, *q;
3949
887035a5 3950 term_seen_key_event(term); /* pasted data counts */
2cb50250 3951
887035a5 3952 if (term->paste_buffer)
3953 sfree(term->paste_buffer);
3954 term->paste_pos = term->paste_hold = term->paste_len = 0;
3d88e64d 3955 term->paste_buffer = snewn(len, wchar_t);
568dd02f 3956
3957 p = q = data;
3958 while (p < data + len) {
3959 while (p < data + len &&
3960 !(p <= data + len - sel_nl_sz &&
3961 !memcmp(p, sel_nl, sizeof(sel_nl))))
3962 p++;
3963
3964 {
3965 int i;
3966 for (i = 0; i < p - q; i++) {
887035a5 3967 term->paste_buffer[term->paste_len++] = q[i];
568dd02f 3968 }
3969 }
3970
3971 if (p <= data + len - sel_nl_sz &&
3972 !memcmp(p, sel_nl, sizeof(sel_nl))) {
92e23ad9 3973 term->paste_buffer[term->paste_len++] = '\015';
568dd02f 3974 p += sel_nl_sz;
3975 }
3976 q = p;
3977 }
3978
3979 /* Assume a small paste will be OK in one go. */
887035a5 3980 if (term->paste_len < 256) {
b9d7bcad 3981 if (term->ldisc)
3982 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
887035a5 3983 if (term->paste_buffer)
3984 sfree(term->paste_buffer);
3985 term->paste_buffer = 0;
3986 term->paste_pos = term->paste_hold = term->paste_len = 0;
568dd02f 3987 }
3988 }
a8327734 3989 get_clip(term->frontend, NULL, NULL);
568dd02f 3990}
3991
fc5b0934 3992void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
3993 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
32874aea 3994{
4facdf84 3995 pos selpoint;
3996 unsigned long *ldata;
887035a5 3997 int raw_mouse = (term->xterm_mouse &&
64734920 3998 !term->cfg.no_mouse_rep &&
3999 !(term->cfg.mouse_override && shift));
6908fed7 4000 int default_seltype;
32874aea 4001
fff61f25 4002 if (y < 0) {
32874aea 4003 y = 0;
fff61f25 4004 if (a == MA_DRAG && !raw_mouse)
887035a5 4005 term_scroll(term, 0, -1);
fff61f25 4006 }
887035a5 4007 if (y >= term->rows) {
4008 y = term->rows - 1;
fff61f25 4009 if (a == MA_DRAG && !raw_mouse)
887035a5 4010 term_scroll(term, 0, +1);
fff61f25 4011 }
32874aea 4012 if (x < 0) {
4013 if (y > 0) {
887035a5 4014 x = term->cols - 1;
32874aea 4015 y--;
4016 } else
4017 x = 0;
094ed2a6 4018 }
887035a5 4019 if (x >= term->cols)
4020 x = term->cols - 1;
37508af4 4021
887035a5 4022 selpoint.y = y + term->disptop;
4facdf84 4023 selpoint.x = x;
4024 ldata = lineptr(selpoint.y);
887035a5 4025 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
4facdf84 4026 selpoint.x /= 2;
374330e2 4027
fff61f25 4028 if (raw_mouse) {
01c034ad 4029 int encstate = 0, r, c;
4030 char abuf[16];
01c034ad 4031
b9d7bcad 4032 if (term->ldisc) {
4033
fc5b0934 4034 switch (braw) {
b9d7bcad 4035 case MBT_LEFT:
4036 encstate = 0x20; /* left button down */
4037 break;
4038 case MBT_MIDDLE:
4039 encstate = 0x21;
4040 break;
4041 case MBT_RIGHT:
4042 encstate = 0x22;
4043 break;
4044 case MBT_WHEEL_UP:
4045 encstate = 0x60;
4046 break;
4047 case MBT_WHEEL_DOWN:
4048 encstate = 0x61;
4049 break;
4050 default: break; /* placate gcc warning about enum use */
4051 }
4052 switch (a) {
4053 case MA_DRAG:
4054 if (term->xterm_mouse == 1)
4055 return;
4056 encstate += 0x20;
4057 break;
4058 case MA_RELEASE:
4059 encstate = 0x23;
4060 term->mouse_is_down = 0;
4061 break;
4062 case MA_CLICK:
fc5b0934 4063 if (term->mouse_is_down == braw)
b9d7bcad 4064 return;
fc5b0934 4065 term->mouse_is_down = braw;
b9d7bcad 4066 break;
4067 default: break; /* placate gcc warning about enum use */
4068 }
4069 if (shift)
4070 encstate += 0x04;
4071 if (ctrl)
4072 encstate += 0x10;
4073 r = y + 33;
4074 c = x + 33;
4075
4076 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
4077 ldisc_send(term->ldisc, abuf, 6, 0);
01c034ad 4078 }
01c034ad 4079 return;
4080 }
4081
6908fed7 4082 /*
4083 * Set the selection type (rectangular or normal) at the start
4084 * of a selection attempt, from the state of Alt.
4085 */
64734920 4086 if (!alt ^ !term->cfg.rect_select)
6908fed7 4087 default_seltype = RECTANGULAR;
4088 else
4089 default_seltype = LEXICOGRAPHIC;
4090
887035a5 4091 if (term->selstate == NO_SELECTION) {
4092 term->seltype = default_seltype;
6908fed7 4093 }
4094
fc5b0934 4095 if (bcooked == MBT_SELECT && a == MA_CLICK) {
887035a5 4096 deselect(term);
4097 term->selstate = ABOUT_TO;
4098 term->seltype = default_seltype;
4099 term->selanchor = selpoint;
4100 term->selmode = SM_CHAR;
fc5b0934 4101 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
887035a5 4102 deselect(term);
4103 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
4104 term->selstate = DRAGGING;
4105 term->selstart = term->selanchor = selpoint;
4106 term->selend = term->selstart;
4107 incpos(term->selend);
4108 sel_spread(term);
fc5b0934 4109 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
4110 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
887035a5 4111 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
374330e2 4112 return;
fc5b0934 4113 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
4114 term->selstate == SELECTED) {
887035a5 4115 if (term->seltype == LEXICOGRAPHIC) {
6908fed7 4116 /*
4117 * For normal selection, we extend by moving
4118 * whichever end of the current selection is closer
4119 * to the mouse.
4120 */
887035a5 4121 if (posdiff(selpoint, term->selstart) <
4122 posdiff(term->selend, term->selstart) / 2) {
4123 term->selanchor = term->selend;
4124 decpos(term->selanchor);
6908fed7 4125 } else {
887035a5 4126 term->selanchor = term->selstart;
6908fed7 4127 }
4facdf84 4128 } else {
6908fed7 4129 /*
4130 * For rectangular selection, we have a choice of
4131 * _four_ places to put selanchor and selpoint: the
4132 * four corners of the selection.
4133 */
887035a5 4134 if (2*selpoint.x < term->selstart.x + term->selend.x)
4135 term->selanchor.x = term->selend.x-1;
6908fed7 4136 else
887035a5 4137 term->selanchor.x = term->selstart.x;
6908fed7 4138
887035a5 4139 if (2*selpoint.y < term->selstart.y + term->selend.y)
4140 term->selanchor.y = term->selend.y;
6908fed7 4141 else
887035a5 4142 term->selanchor.y = term->selstart.y;
4facdf84 4143 }
887035a5 4144 term->selstate = DRAGGING;
374330e2 4145 }
887035a5 4146 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
4147 term->selanchor = selpoint;
4148 term->selstate = DRAGGING;
4149 if (term->seltype == LEXICOGRAPHIC) {
6908fed7 4150 /*
4151 * For normal selection, we set (selstart,selend) to
4152 * (selpoint,selanchor) in some order.
4153 */
887035a5 4154 if (poslt(selpoint, term->selanchor)) {
4155 term->selstart = selpoint;
4156 term->selend = term->selanchor;
4157 incpos(term->selend);
6908fed7 4158 } else {
887035a5 4159 term->selstart = term->selanchor;
4160 term->selend = selpoint;
4161 incpos(term->selend);
6908fed7 4162 }
374330e2 4163 } else {
6908fed7 4164 /*
4165 * For rectangular selection, we may need to
4166 * interchange x and y coordinates (if the user has
4167 * dragged in the -x and +y directions, or vice versa).
4168 */
887035a5 4169 term->selstart.x = min(term->selanchor.x, selpoint.x);
4170 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
4171 term->selstart.y = min(term->selanchor.y, selpoint.y);
4172 term->selend.y = max(term->selanchor.y, selpoint.y);
374330e2 4173 }
887035a5 4174 sel_spread(term);
fc5b0934 4175 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
4176 a == MA_RELEASE) {
887035a5 4177 if (term->selstate == DRAGGING) {
374330e2 4178 /*
4179 * We've completed a selection. We now transfer the
4180 * data to the clipboard.
4181 */
887035a5 4182 clipme(term, term->selstart, term->selend,
c076966d 4183 (term->seltype == RECTANGULAR), FALSE);
887035a5 4184 term->selstate = SELECTED;
374330e2 4185 } else
887035a5 4186 term->selstate = NO_SELECTION;
fc5b0934 4187 } else if (bcooked == MBT_PASTE
e6346999 4188 && (a == MA_CLICK
4189#if MULTICLICK_ONLY_EVENT
4190 || a == MA_2CLK || a == MA_3CLK
4191#endif
4192 )) {
a8327734 4193 request_paste(term->frontend);
374330e2 4194 }
4195
887035a5 4196 term_update(term);
374330e2 4197}
4198
6c50d421 4199void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
4200 unsigned int modifiers, unsigned int flags)
4201{
4202 char output[10];
4203 char *p = output;
4204 int prependesc = FALSE;
84b8d085 4205#if 0
6c50d421 4206 int i;
4207
4208 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
4209 for (i = 0; i < tlen; i++)
bf02e82e 4210 fprintf(stderr, " %04x", (unsigned)text[i]);
6c50d421 4211 fprintf(stderr, "\n");
84b8d085 4212#endif
6c50d421 4213
4214 /* XXX Num Lock */
4215 if ((flags & PKF_REPEAT) && term->repeat_off)
4216 return;
4217
4218 /* Currently, Meta always just prefixes everything with ESC. */
4219 if (modifiers & PKM_META)
4220 prependesc = TRUE;
4221 modifiers &= ~PKM_META;
4222
4223 /*
4224 * Alt is only used for Alt+keypad, which isn't supported yet, so
4225 * ignore it.
4226 */
4227 modifiers &= ~PKM_ALT;
4228
4229 /* Standard local function keys */
4230 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
4231 case PKM_SHIFT:
4232 if (keysym == PK_PAGEUP)
4233 /* scroll up one page */;
4234 if (keysym == PK_PAGEDOWN)
4235 /* scroll down on page */;
4236 if (keysym == PK_INSERT)
4237 term_do_paste(term);
4238 break;
4239 case PKM_CONTROL:
4240 if (keysym == PK_PAGEUP)
4241 /* scroll up one line */;
4242 if (keysym == PK_PAGEDOWN)
4243 /* scroll down one line */;
4244 /* Control-Numlock for app-keypad mode switch */
4245 if (keysym == PK_PF1)
4246 term->app_keypad_keys ^= 1;
4247 break;
4248 }
4249
4250 if (modifiers & PKM_ALT) {
4251 /* Alt+F4 (close) */
4252 /* Alt+Return (full screen) */
4253 /* Alt+Space (system menu) */
4254 }
4255
4256 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
4257 text[0] >= 0x20 && text[0] <= 0x7e) {
4258 /* ASCII chars + Control */
bf02e82e 4259 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
4260 (text[0] >= 0x61 && text[0] <= 0x7a))
6c50d421 4261 text[0] &= 0x1f;
4262 else {
4263 /*
4264 * Control-2 should return ^@ (0x00), Control-6 should return
4265 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
4266 * the DOS keyboard handling did it, and we have nothing better
4267 * to do with the key combo in question, we'll also map
4268 * Control-Backquote to ^\ (0x1C).
4269 */
4270 switch (text[0]) {
4271 case ' ': text[0] = 0x00; break;
4272 case '-': text[0] = 0x1f; break;
4273 case '/': text[0] = 0x1f; break;
4274 case '2': text[0] = 0x00; break;
4275 case '3': text[0] = 0x1b; break;
4276 case '4': text[0] = 0x1c; break;
4277 case '5': text[0] = 0x1d; break;
4278 case '6': text[0] = 0x1e; break;
4279 case '7': text[0] = 0x1f; break;
4280 case '8': text[0] = 0x7f; break;
4281 case '`': text[0] = 0x1c; break;
4282 }
4283 }
4284 }
4285
4286 /* Nethack keypad */
4287 if (term->cfg.nethack_keypad) {
4288 char c = 0;
4289 switch (keysym) {
4290 case PK_KP1: c = 'b'; break;
4291 case PK_KP2: c = 'j'; break;
4292 case PK_KP3: c = 'n'; break;
4293 case PK_KP4: c = 'h'; break;
4294 case PK_KP5: c = '.'; break;
4295 case PK_KP6: c = 'l'; break;
4296 case PK_KP7: c = 'y'; break;
4297 case PK_KP8: c = 'k'; break;
4298 case PK_KP9: c = 'u'; break;
bf02e82e 4299 default: break; /* else gcc warns `enum value not used' */
6c50d421 4300 }
4301 if (c != 0) {
4302 if (c != '.') {
4303 if (modifiers & PKM_CONTROL)
4304 c &= 0x1f;
4305 else if (modifiers & PKM_SHIFT)
4306 c = toupper(c);
4307 }
4308 *p++ = c;
4309 goto done;
4310 }
4311 }
4312
4313 /* Numeric Keypad */
4314 if (PK_ISKEYPAD(keysym)) {
4315 int xkey = 0;
4316
4317 /*
4318 * In VT400 mode, PFn always emits an escape sequence. In
4319 * Linux and tilde modes, this only happens in app keypad mode.
4320 */
4321 if (term->cfg.funky_type == FUNKY_VT400 ||
4322 ((term->cfg.funky_type == FUNKY_LINUX ||
4323 term->cfg.funky_type == FUNKY_TILDE) &&
4324 term->app_keypad_keys && !term->cfg.no_applic_k)) {
4325 switch (keysym) {
4326 case PK_PF1: xkey = 'P'; break;
4327 case PK_PF2: xkey = 'Q'; break;
4328 case PK_PF3: xkey = 'R'; break;
4329 case PK_PF4: xkey = 'S'; break;
bf02e82e 4330 default: break; /* else gcc warns `enum value not used' */
6c50d421 4331 }
4332 }
4333 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
4334 switch (keysym) {
4335 case PK_KP0: xkey = 'p'; break;
4336 case PK_KP1: xkey = 'q'; break;
4337 case PK_KP2: xkey = 'r'; break;
4338 case PK_KP3: xkey = 's'; break;
4339 case PK_KP4: xkey = 't'; break;
4340 case PK_KP5: xkey = 'u'; break;
4341 case PK_KP6: xkey = 'v'; break;
4342 case PK_KP7: xkey = 'w'; break;
4343 case PK_KP8: xkey = 'x'; break;
4344 case PK_KP9: xkey = 'y'; break;
4345 case PK_KPDECIMAL: xkey = 'n'; break;
4346 case PK_KPENTER: xkey = 'M'; break;
bf02e82e 4347 default: break; /* else gcc warns `enum value not used' */
6c50d421 4348 }
4349 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
4350 /*
4351 * xterm can't see the layout of the keypad, so it has
4352 * to rely on the X keysyms returned by the keys.
4353 * Hence, we look at the strings here, not the PuTTY
4354 * keysyms (which describe the layout).
4355 */
4356 switch (text[0]) {
4357 case '+':
4358 if (modifiers & PKM_SHIFT)
4359 xkey = 'l';
4360 else
4361 xkey = 'k';
4362 break;
4363 case '/': xkey = 'o'; break;
4364 case '*': xkey = 'j'; break;
4365 case '-': xkey = 'm'; break;
4366 }
4367 } else {
4368 /*
4369 * In all other modes, we try to retain the layout of
4370 * the DEC keypad in application mode.
4371 */
4372 switch (keysym) {
4373 case PK_KPBIGPLUS:
4374 /* This key covers the '-' and ',' keys on a VT220 */
4375 if (modifiers & PKM_SHIFT)
4376 xkey = 'm'; /* VT220 '-' */
4377 else
4378 xkey = 'l'; /* VT220 ',' */
4379 break;
4380 case PK_KPMINUS: xkey = 'm'; break;
4381 case PK_KPCOMMA: xkey = 'l'; break;
bf02e82e 4382 default: break; /* else gcc warns `enum value not used' */
6c50d421 4383 }
4384 }
4385 }
4386 if (xkey) {
4387 if (term->vt52_mode) {
4388 if (xkey >= 'P' && xkey <= 'S')
4389 p += sprintf((char *) p, "\x1B%c", xkey);
4390 else
4391 p += sprintf((char *) p, "\x1B?%c", xkey);
4392 } else
4393 p += sprintf((char *) p, "\x1BO%c", xkey);
4394 goto done;
4395 }
4396 /* Not in application mode -- treat the number pad as arrow keys? */
4397 if ((flags & PKF_NUMLOCK) == 0) {
4398 switch (keysym) {
4399 case PK_KP0: keysym = PK_INSERT; break;
4400 case PK_KP1: keysym = PK_END; break;
4401 case PK_KP2: keysym = PK_DOWN; break;
4402 case PK_KP3: keysym = PK_PAGEDOWN; break;
4403 case PK_KP4: keysym = PK_LEFT; break;
4404 case PK_KP5: keysym = PK_REST; break;
4405 case PK_KP6: keysym = PK_RIGHT; break;
4406 case PK_KP7: keysym = PK_HOME; break;
4407 case PK_KP8: keysym = PK_UP; break;
4408 case PK_KP9: keysym = PK_PAGEUP; break;
bf02e82e 4409 default: break; /* else gcc warns `enum value not used' */
6c50d421 4410 }
4411 }
4412 }
4413
4414 /* Miscellaneous keys */
4415 switch (keysym) {
4416 case PK_ESCAPE:
4417 *p++ = 0x1b;
4418 goto done;
4419 case PK_BACKSPACE:
4420 if (modifiers == 0)
4421 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
4422 else if (modifiers == PKM_SHIFT)
4423 /* We do the opposite of what is configured */
4424 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
4425 else break;
4426 goto done;
4427 case PK_TAB:
4428 if (modifiers == 0)
4429 *p++ = 0x09;
4430 else if (modifiers == PKM_SHIFT)
4431 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
4432 else break;
4433 goto done;
4434 /* XXX window.c has ctrl+shift+space sending 0xa0 */
4435 case PK_PAUSE:
4436 if (modifiers == PKM_CONTROL)
4437 *p++ = 26;
4438 else break;
4439 goto done;
4440 case PK_RETURN:
4441 case PK_KPENTER: /* Odd keypad modes handled above */
4442 if (modifiers == 0) {
4443 *p++ = 0x0d;
4444 if (term->cr_lf_return)
4445 *p++ = 0x0a;
4446 goto done;
4447 }
bf02e82e 4448 default: break; /* else gcc warns `enum value not used' */
6c50d421 4449 }
4450
4451 /* SCO function keys and editing keys */
4452 if (term->cfg.funky_type == FUNKY_SCO) {
4453 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
4454 static char const codes[] =
4455 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
4456 int index = keysym - PK_F1;
4457
4458 if (modifiers & PKM_SHIFT) index += 12;
4459 if (modifiers & PKM_CONTROL) index += 24;
4460 p += sprintf((char *) p, "\x1B[%c", codes[index]);
4461 goto done;
4462 }
4463 if (PK_ISEDITING(keysym)) {
4464 int xkey = 0;
4465
4466 switch (keysym) {
4467 case PK_DELETE: *p++ = 0x7f; goto done;
4468 case PK_HOME: xkey = 'H'; break;
4469 case PK_INSERT: xkey = 'L'; break;
4470 case PK_END: xkey = 'F'; break;
4471 case PK_PAGEUP: xkey = 'I'; break;
4472 case PK_PAGEDOWN: xkey = 'G'; break;
bf02e82e 4473 default: break; /* else gcc warns `enum value not used' */
6c50d421 4474 }
4475 p += sprintf((char *) p, "\x1B[%c", xkey);
4476 }
4477 }
4478
4479 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
4480 int code;
4481
4482 if (term->cfg.funky_type == FUNKY_XTERM) {
4483 /* Xterm shuffles these keys, apparently. */
4484 switch (keysym) {
4485 case PK_HOME: keysym = PK_INSERT; break;
4486 case PK_INSERT: keysym = PK_HOME; break;
4487 case PK_DELETE: keysym = PK_END; break;
4488 case PK_END: keysym = PK_PAGEUP; break;
4489 case PK_PAGEUP: keysym = PK_DELETE; break;
4490 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
bf02e82e 4491 default: break; /* else gcc warns `enum value not used' */
6c50d421 4492 }
4493 }
4494
4495 /* RXVT Home/End */
4496 if (term->cfg.rxvt_homeend &&
4497 (keysym == PK_HOME || keysym == PK_END)) {
4498 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
4499 goto done;
4500 }
4501
4502 if (term->vt52_mode) {
4503 int xkey;
4504
4505 /*
4506 * A real VT52 doesn't have these, and a VT220 doesn't
4507 * send anything for them in VT52 mode.
4508 */
4509 switch (keysym) {
4510 case PK_HOME: xkey = 'H'; break;
4511 case PK_INSERT: xkey = 'L'; break;
4512 case PK_DELETE: xkey = 'M'; break;
4513 case PK_END: xkey = 'E'; break;
4514 case PK_PAGEUP: xkey = 'I'; break;
4515 case PK_PAGEDOWN: xkey = 'G'; break;
bf02e82e 4516 default: break; /* else gcc warns `enum value not used' */
6c50d421 4517 }
4518 p += sprintf((char *) p, "\x1B%c", xkey);
4519 goto done;
4520 }
4521
4522 switch (keysym) {
4523 case PK_HOME: code = 1; break;
4524 case PK_INSERT: code = 2; break;
4525 case PK_DELETE: code = 3; break;
4526 case PK_END: code = 4; break;
4527 case PK_PAGEUP: code = 5; break;
4528 case PK_PAGEDOWN: code = 6; break;
bf02e82e 4529 default: break; /* else gcc warns `enum value not used' */
6c50d421 4530 }
4531 p += sprintf((char *) p, "\x1B[%d~", code);
4532 goto done;
4533 }
4534
4535 if (PK_ISFKEY(keysym)) {
4536 /* Map Shift+F1-F10 to F11-F20 */
4537 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
4538 keysym += 10;
4539 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
4540 keysym <= PK_F14) {
4541 /* XXX This overrides the XTERM/VT52 mode below */
4542 int offt = 0;
4543 if (keysym >= PK_F6) offt++;
4544 if (keysym >= PK_F12) offt++;
4545 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
4546 'P' + keysym - PK_F1 - offt);
4547 goto done;
4548 }
4549 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
4550 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
4551 goto done;
4552 }
4553 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
4554 if (term->vt52_mode)
4555 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
4556 else
4557 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
4558 goto done;
4559 }
4560 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
4561 goto done;
4562 }
4563
4564 if (PK_ISCURSOR(keysym)) {
4565 int xkey;
4566
4567 switch (keysym) {
4568 case PK_UP: xkey = 'A'; break;
4569 case PK_DOWN: xkey = 'B'; break;
4570 case PK_RIGHT: xkey = 'C'; break;
4571 case PK_LEFT: xkey = 'D'; break;
4572 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
bf02e82e 4573 default: break; /* else gcc warns `enum value not used' */
6c50d421 4574 }
4575 if (term->vt52_mode)
4576 p += sprintf((char *) p, "\x1B%c", xkey);
4577 else {
4578 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
4579
4580 /* Useful mapping of Ctrl-arrows */
4581 if (modifiers == PKM_CONTROL)
4582 app_flg = !app_flg;
4583
4584 if (app_flg)
4585 p += sprintf((char *) p, "\x1BO%c", xkey);
4586 else
4587 p += sprintf((char *) p, "\x1B[%c", xkey);
4588 }
4589 goto done;
4590 }
4591
4592 done:
4593 if (p > output || tlen > 0) {
4594 /*
4595 * Interrupt an ongoing paste. I'm not sure
4596 * this is sensible, but for the moment it's
4597 * preferable to having to faff about buffering
4598 * things.
4599 */
4600 term_nopaste(term);
4601
4602 /*
4603 * We need not bother about stdin backlogs
4604 * here, because in GUI PuTTY we can't do
4605 * anything about it anyway; there's no means
4606 * of asking Windows to hold off on KEYDOWN
4607 * messages. We _have_ to buffer everything
4608 * we're sent.
4609 */
4610 term_seen_key_event(term);
4611
4612 if (prependesc) {
84b8d085 4613#if 0
6c50d421 4614 fprintf(stderr, "sending ESC\n");
84b8d085 4615#endif
6c50d421 4616 ldisc_send(term->ldisc, "\x1b", 1, 1);
4617 }
4618
4619 if (p > output) {
84b8d085 4620#if 0
6c50d421 4621 fprintf(stderr, "sending %d bytes:", p - output);
4622 for (i = 0; i < p - output; i++)
4623 fprintf(stderr, " %02x", output[i]);
4624 fprintf(stderr, "\n");
84b8d085 4625#endif
6c50d421 4626 ldisc_send(term->ldisc, output, p - output, 1);
4627 } else if (tlen > 0) {
84b8d085 4628#if 0
6c50d421 4629 fprintf(stderr, "sending %d unichars:", tlen);
4630 for (i = 0; i < tlen; i++)
bf02e82e 4631 fprintf(stderr, " %04x", (unsigned) text[i]);
6c50d421 4632 fprintf(stderr, "\n");
84b8d085 4633#endif
6c50d421 4634 luni_send(term->ldisc, text, tlen, 1);
4635 }
4636 }
4637}
4638
887035a5 4639void term_nopaste(Terminal *term)
32874aea 4640{
887035a5 4641 if (term->paste_len == 0)
32874aea 4642 return;
887035a5 4643 sfree(term->paste_buffer);
f278d6f8 4644 term->paste_buffer = NULL;
887035a5 4645 term->paste_len = 0;
c9def1b8 4646}
4647
887035a5 4648int term_paste_pending(Terminal *term)
0f660c8f 4649{
887035a5 4650 return term->paste_len != 0;
0f660c8f 4651}
4652
887035a5 4653void term_paste(Terminal *term)
32874aea 4654{
c9def1b8 4655 long now, paste_diff;
4656
887035a5 4657 if (term->paste_len == 0)
32874aea 4658 return;
c9def1b8 4659
4660 /* Don't wait forever to paste */
887035a5 4661 if (term->paste_hold) {
f7f27309 4662 now = GETTICKCOUNT();
887035a5 4663 paste_diff = now - term->last_paste;
32874aea 4664 if (paste_diff >= 0 && paste_diff < 450)
c9def1b8 4665 return;
4666 }
887035a5 4667 term->paste_hold = 0;
c9def1b8 4668
887035a5 4669 while (term->paste_pos < term->paste_len) {
8df7a775 4670 int n = 0;
887035a5 4671 while (n + term->paste_pos < term->paste_len) {
92e23ad9 4672 if (term->paste_buffer[term->paste_pos + n++] == '\015')
8df7a775 4673 break;
4674 }
b9d7bcad 4675 if (term->ldisc)
4676 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
887035a5 4677 term->paste_pos += n;
c9def1b8 4678
887035a5 4679 if (term->paste_pos < term->paste_len) {
4680 term->paste_hold = 1;
c9def1b8 4681 return;
4682 }
4683 }
887035a5 4684 sfree(term->paste_buffer);
4685 term->paste_buffer = NULL;
4686 term->paste_len = 0;
c9def1b8 4687}
4688
887035a5 4689static void deselect(Terminal *term)
32874aea 4690{
887035a5 4691 term->selstate = NO_SELECTION;
4692 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
374330e2 4693}
4694
887035a5 4695void term_deselect(Terminal *term)
32874aea 4696{
887035a5 4697 deselect(term);
4698 term_update(term);
374330e2 4699}
fe50e814 4700
887035a5 4701int term_ldisc(Terminal *term, int option)
32874aea 4702{
4703 if (option == LD_ECHO)
887035a5 4704 return term->term_echoing;
32874aea 4705 if (option == LD_EDIT)
887035a5 4706 return term->term_editing;
0965bee0 4707 return FALSE;
4708}
4709
fbf6cb3b 4710int term_data(Terminal *term, int is_stderr, const char *data, int len)
32874aea 4711{
2b0c045b 4712 assert(len > 0);
4713
887035a5 4714 bufchain_add(&term->inbuf, data, len);
5471d09a 4715
74aca06d 4716 if (!term->in_term_out) {
4717 term->in_term_out = TRUE;
4718 term_blink(term, 1);
4719 term_out(term);
4720 term->in_term_out = FALSE;
4721 }
4722
5471d09a 4723 /*
a748a096 4724 * term_out() always completely empties inbuf. Therefore,
4725 * there's no reason at all to return anything other than zero
4726 * from this function, because there _can't_ be a question of
4727 * the remote side needing to wait until term_out() has cleared
4728 * a backlog.
4729 *
5471d09a 4730 * This is a slightly suboptimal way to deal with SSH2 - in
4731 * principle, the window mechanism would allow us to continue
4732 * to accept data on forwarded ports and X connections even
4733 * while the terminal processing was going slowly - but we
4734 * can't do the 100% right thing without moving the terminal
4735 * processing into a separate thread, and that might hurt
4736 * portability. So we manage stdout buffering the old SSH1 way:
4737 * if the terminal processing goes slowly, the whole SSH
4738 * connection stops accepting data until it's ready.
a748a096 4739 *
5471d09a 4740 * In practice, I can't imagine this causing serious trouble.
4741 */
4742 return 0;
fe50e814 4743}
a8327734 4744
4745void term_provide_logctx(Terminal *term, void *logctx)
4746{
4747 term->logctx = logctx;
4748}
Local modifications for Simon Tatham's `PuTTY' SSH client and terminal emulator