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[u/mdw/putty] / terminal.c
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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];
102 line = srealloc(line, TSIZE * (2 + cols));
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 */
375 term = smalloc(sizeof(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;
887035a5 421
422 return term;
374330e2 423}
424
fabd1805 425void term_free(Terminal *term)
426{
427 unsigned long *line;
428 struct beeptime *beep;
429
430 while ((line = delpos234(term->scrollback, 0)) != NULL)
431 sfree(line);
432 freetree234(term->scrollback);
433 while ((line = delpos234(term->screen, 0)) != NULL)
434 sfree(line);
435 freetree234(term->screen);
436 while ((line = delpos234(term->alt_screen, 0)) != NULL)
437 sfree(line);
438 freetree234(term->alt_screen);
439 sfree(term->disptext);
440 while (term->beephead) {
441 beep = term->beephead;
442 term->beephead = beep->next;
443 sfree(beep);
444 }
445 bufchain_clear(&term->inbuf);
446 if(term->print_job)
447 printer_finish_job(term->print_job);
448 bufchain_clear(&term->printer_buf);
449 sfree(term->paste_buffer);
450 sfree(term);
451}
452
374330e2 453/*
454 * Set up the terminal for a given size.
455 */
887035a5 456void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
32874aea 457{
2d466ffd 458 tree234 *newalt;
459 unsigned long *newdisp, *line;
460 int i, j;
c83de303 461 int sblen;
887035a5 462 int save_alt_which = term->alt_which;
d6832394 463
887035a5 464 if (newrows == term->rows && newcols == term->cols &&
465 newsavelines == term->savelines)
374330e2 466 return; /* nothing to do */
467
887035a5 468 deselect(term);
469 swap_screen(term, 0, FALSE, FALSE);
d6832394 470
887035a5 471 term->alt_t = term->marg_t = 0;
472 term->alt_b = term->marg_b = newrows - 1;
374330e2 473
887035a5 474 if (term->rows == -1) {
475 term->scrollback = newtree234(NULL);
476 term->screen = newtree234(NULL);
4683b9b6 477 term->tempsblines = 0;
887035a5 478 term->rows = 0;
c83de303 479 }
480
481 /*
482 * Resize the screen and scrollback. We only need to shift
483 * lines around within our data structures, because lineptr()
484 * will take care of resizing each individual line if
485 * necessary. So:
486 *
4683b9b6 487 * - If the new screen is longer, we shunt lines in from temporary
488 * scrollback if possible, otherwise we add new blank lines at
489 * the bottom.
490 *
491 * - If the new screen is shorter, we remove any blank lines at
492 * the bottom if possible, otherwise shunt lines above the cursor
493 * to scrollback if possible, otherwise delete lines below the
494 * cursor.
c83de303 495 *
496 * - Then, if the new scrollback length is less than the
497 * amount of scrollback we actually have, we must throw some
498 * away.
499 */
887035a5 500 sblen = count234(term->scrollback);
cdd6c586 501 /* Do this loop to expand the screen if newrows > rows */
4683b9b6 502 assert(term->rows == count234(term->screen));
503 while (term->rows < newrows) {
504 if (term->tempsblines > 0) {
505 /* Insert a line from the scrollback at the top of the screen. */
506 assert(sblen >= term->tempsblines);
887035a5 507 line = delpos234(term->scrollback, --sblen);
4683b9b6 508 term->tempsblines -= 1;
509 addpos234(term->screen, line, 0);
510 term->curs.y += 1;
511 term->savecurs.y += 1;
32874aea 512 } else {
4683b9b6 513 /* Add a new blank line at the bottom of the screen. */
32874aea 514 line = smalloc(TSIZE * (newcols + 2));
515 line[0] = newcols;
37ca32ed 516 for (j = 0; j < newcols; j++)
32874aea 517 line[j + 1] = ERASE_CHAR;
8ceabe90 518 line[newcols + 1] = LATTR_NORM;
4683b9b6 519 addpos234(term->screen, line, count234(term->screen));
32874aea 520 }
4683b9b6 521 term->rows += 1;
cdd6c586 522 }
523 /* Do this loop to shrink the screen if newrows < rows */
4683b9b6 524 while (term->rows > newrows) {
525 if (term->curs.y < term->rows - 1) {
526 /* delete bottom row, unless it contains the cursor */
527 sfree(delpos234(term->screen, term->rows - 1));
528 } else {
529 /* push top row to scrollback */
530 line = delpos234(term->screen, 0);
531 addpos234(term->scrollback, line, sblen++);
532 term->tempsblines += 1;
533 term->curs.y -= 1;
534 term->savecurs.y -= 1;
535 }
536 term->rows -= 1;
c83de303 537 }
4683b9b6 538 assert(term->rows == newrows);
887035a5 539 assert(count234(term->screen) == newrows);
4683b9b6 540
541 /* Delete any excess lines from the scrollback. */
c83de303 542 while (sblen > newsavelines) {
887035a5 543 line = delpos234(term->scrollback, 0);
c83de303 544 sfree(line);
545 sblen--;
c9def1b8 546 }
4683b9b6 547 if (sblen < term->tempsblines)
548 term->tempsblines = sblen;
887035a5 549 assert(count234(term->scrollback) <= newsavelines);
4683b9b6 550 assert(count234(term->scrollback) >= term->tempsblines);
887035a5 551 term->disptop = 0;
374330e2 552
4683b9b6 553 /* Make a new displayed text buffer. */
32874aea 554 newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
555 for (i = 0; i < newrows * (newcols + 1); i++)
374330e2 556 newdisp[i] = ATTR_INVALID;
887035a5 557 sfree(term->disptext);
558 term->disptext = newdisp;
559 term->dispcurs = NULL;
374330e2 560
4683b9b6 561 /* Make a new alternate screen. */
4facdf84 562 newalt = newtree234(NULL);
32874aea 563 for (i = 0; i < newrows; i++) {
564 line = smalloc(TSIZE * (newcols + 2));
c83de303 565 line[0] = newcols;
37ca32ed 566 for (j = 0; j < newcols; j++)
887035a5 567 line[j + 1] = term->erase_char;
37ca32ed 568 line[newcols + 1] = LATTR_NORM;
4facdf84 569 addpos234(newalt, line, i);
570 }
887035a5 571 if (term->alt_screen) {
572 while (NULL != (line = delpos234(term->alt_screen, 0)))
4facdf84 573 sfree(line);
887035a5 574 freetree234(term->alt_screen);
4facdf84 575 }
887035a5 576 term->alt_screen = newalt;
876e5d5e 577 term->alt_sblines = 0;
374330e2 578
887035a5 579 term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
374330e2 580 {
581 int i;
887035a5 582 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
583 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
374330e2 584 }
585
4683b9b6 586 /* Check that the cursor positions are still valid. */
587 if (term->savecurs.y < 0)
588 term->savecurs.y = 0;
589 if (term->savecurs.y >= newrows)
590 term->savecurs.y = newrows - 1;
887035a5 591 if (term->curs.y < 0)
592 term->curs.y = 0;
593 if (term->curs.y >= newrows)
594 term->curs.y = newrows - 1;
595 if (term->curs.x >= newcols)
596 term->curs.x = newcols - 1;
597 term->alt_x = term->alt_y = 0;
598 term->wrapnext = term->alt_wnext = FALSE;
599
600 term->rows = newrows;
601 term->cols = newcols;
602 term->savelines = newsavelines;
374330e2 603 fix_cpos;
604
887035a5 605 swap_screen(term, save_alt_which, FALSE, FALSE);
d6832394 606
887035a5 607 update_sbar(term);
608 term_update(term);
51470298 609 if (term->resize_fn)
610 term->resize_fn(term->resize_ctx, term->cols, term->rows);
611}
612
613/*
614 * Hand a function and context pointer to the terminal which it can
615 * use to notify a back end of resizes.
616 */
617void term_provide_resize_fn(Terminal *term,
618 void (*resize_fn)(void *, int, int),
619 void *resize_ctx)
620{
621 term->resize_fn = resize_fn;
622 term->resize_ctx = resize_ctx;
623 if (term->cols > 0 && term->rows > 0)
624 resize_fn(resize_ctx, term->cols, term->rows);
374330e2 625}
626
876e5d5e 627/* Find the bottom line on the screen that has any content.
628 * If only the top line has content, returns 0.
629 * If no lines have content, return -1.
630 */
631static int find_last_nonempty_line(Terminal * term, tree234 * screen)
632{
633 int i;
634 for (i = count234(screen) - 1; i >= 0; i--) {
635 unsigned long *line = index234(screen, i);
636 int j;
637 int cols = line[0];
638 for (j = 0; j < cols; j++) {
639 if (line[j + 1] != term->erase_char) break;
640 }
641 if (j != cols) break;
642 }
643 return i;
644}
645
374330e2 646/*
8f9b6a1a 647 * Swap screens. If `reset' is TRUE and we have been asked to
648 * switch to the alternate screen, we must bring most of its
649 * configuration from the main screen and erase the contents of the
650 * alternate screen completely. (This is even true if we're already
651 * on it! Blame xterm.)
374330e2 652 */
887035a5 653static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
32874aea 654{
374330e2 655 int t;
4facdf84 656 tree234 *ttr;
374330e2 657
8f9b6a1a 658 if (!which)
659 reset = FALSE; /* do no weird resetting if which==0 */
660
887035a5 661 if (which != term->alt_which) {
662 term->alt_which = which;
8f9b6a1a 663
887035a5 664 ttr = term->alt_screen;
665 term->alt_screen = term->screen;
666 term->screen = ttr;
876e5d5e 667 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
887035a5 668 t = term->curs.x;
8f9b6a1a 669 if (!reset && !keep_cur_pos)
887035a5 670 term->curs.x = term->alt_x;
671 term->alt_x = t;
672 t = term->curs.y;
8f9b6a1a 673 if (!reset && !keep_cur_pos)
887035a5 674 term->curs.y = term->alt_y;
675 term->alt_y = t;
676 t = term->marg_t;
677 if (!reset) term->marg_t = term->alt_t;
678 term->alt_t = t;
679 t = term->marg_b;
680 if (!reset) term->marg_b = term->alt_b;
681 term->alt_b = t;
682 t = term->dec_om;
683 if (!reset) term->dec_om = term->alt_om;
684 term->alt_om = t;
685 t = term->wrap;
686 if (!reset) term->wrap = term->alt_wrap;
687 term->alt_wrap = t;
688 t = term->wrapnext;
689 if (!reset) term->wrapnext = term->alt_wnext;
690 term->alt_wnext = t;
691 t = term->insert;
692 if (!reset) term->insert = term->alt_ins;
693 term->alt_ins = t;
694 t = term->cset;
695 if (!reset) term->cset = term->alt_cset;
696 term->alt_cset = t;
697 t = term->utf;
698 if (!reset) term->utf = term->alt_utf;
699 term->alt_utf = t;
700 t = term->sco_acs;
701 if (!reset) term->sco_acs = term->alt_sco_acs;
702 term->alt_sco_acs = t;
8f9b6a1a 703 }
374330e2 704
887035a5 705 if (reset && term->screen) {
8f9b6a1a 706 /*
707 * Yes, this _is_ supposed to honour background-colour-erase.
708 */
887035a5 709 erase_lots(term, FALSE, TRUE, TRUE);
8f9b6a1a 710 }
711
712 /*
713 * This might not be possible if we're called during
714 * initialisation.
715 */
887035a5 716 if (term->screen)
8f9b6a1a 717 fix_cpos;
374330e2 718}
719
720/*
374330e2 721 * Update the scroll bar.
722 */
887035a5 723static void update_sbar(Terminal *term)
32874aea 724{
876e5d5e 725 int nscroll = sblines(term);
a8327734 726 set_sbar(term->frontend, nscroll + term->rows,
727 nscroll + term->disptop, term->rows);
374330e2 728}
729
730/*
731 * Check whether the region bounded by the two pointers intersects
732 * the scroll region, and de-select the on-screen selection if so.
733 */
887035a5 734static void check_selection(Terminal *term, pos from, pos to)
32874aea 735{
887035a5 736 if (poslt(from, term->selend) && poslt(term->selstart, to))
737 deselect(term);
374330e2 738}
739
740/*
741 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
742 * for backward.) `sb' is TRUE if the scrolling is permitted to
743 * affect the scrollback buffer.
a4450583 744 *
745 * NB this function invalidates all pointers into lines of the
746 * screen data structures. In particular, you MUST call fix_cpos
747 * after calling scroll() and before doing anything else that
748 * uses the cpos shortcut pointer.
374330e2 749 */
887035a5 750static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
32874aea 751{
4facdf84 752 unsigned long *line, *line2;
7c66d7d9 753 int i, seltop, olddisptop, shift;
c9def1b8 754
887035a5 755 if (topline != 0 || term->alt_which != 0)
4facdf84 756 sb = FALSE;
757
7c66d7d9 758 olddisptop = term->disptop;
759 shift = lines;
4facdf84 760 if (lines < 0) {
761 while (lines < 0) {
887035a5 762 line = delpos234(term->screen, botline);
763 line = resizeline(line, term->cols);
764 for (i = 0; i < term->cols; i++)
765 line[i + 1] = term->erase_char;
766 line[term->cols + 1] = 0;
767 addpos234(term->screen, line, topline);
768
769 if (term->selstart.y >= topline && term->selstart.y <= botline) {
770 term->selstart.y++;
771 if (term->selstart.y > botline) {
772 term->selstart.y = botline;
773 term->selstart.x = 0;
c9def1b8 774 }
c9def1b8 775 }
887035a5 776 if (term->selend.y >= topline && term->selend.y <= botline) {
777 term->selend.y++;
778 if (term->selend.y > botline) {
779 term->selend.y = botline;
780 term->selend.x = 0;
c9def1b8 781 }
c9def1b8 782 }
c9def1b8 783
4facdf84 784 lines++;
c9def1b8 785 }
374330e2 786 } else {
4facdf84 787 while (lines > 0) {
887035a5 788 line = delpos234(term->screen, topline);
789 if (sb && term->savelines > 0) {
4683b9b6 790 int sblen = count234(term->scrollback);
4facdf84 791 /*
792 * We must add this line to the scrollback. We'll
793 * remove a line from the top of the scrollback to
794 * replace it, or allocate a new one if the
795 * scrollback isn't full.
796 */
887035a5 797 if (sblen == term->savelines) {
798 sblen--, line2 = delpos234(term->scrollback, 0);
c83de303 799 } else {
887035a5 800 line2 = smalloc(TSIZE * (term->cols + 2));
801 line2[0] = term->cols;
4683b9b6 802 term->tempsblines += 1;
c83de303 803 }
887035a5 804 addpos234(term->scrollback, line, sblen);
4facdf84 805 line = line2;
a792432e 806
807 /*
808 * If the user is currently looking at part of the
809 * scrollback, and they haven't enabled any options
810 * that are going to reset the scrollback as a
811 * result of this movement, then the chances are
812 * they'd like to keep looking at the same line. So
813 * we move their viewpoint at the same rate as the
814 * scroll, at least until their viewpoint hits the
815 * top end of the scrollback buffer, at which point
816 * we don't have the choice any more.
817 *
818 * Thanks to Jan Holmen Holsten for the idea and
819 * initial implementation.
820 */
887035a5 821 if (term->disptop > -term->savelines && term->disptop < 0)
822 term->disptop--;
4facdf84 823 }
887035a5 824 line = resizeline(line, term->cols);
825 for (i = 0; i < term->cols; i++)
826 line[i + 1] = term->erase_char;
37ca32ed 827 line[term->cols + 1] = LATTR_NORM;
887035a5 828 addpos234(term->screen, line, botline);
4facdf84 829
a792432e 830 /*
831 * If the selection endpoints move into the scrollback,
832 * we keep them moving until they hit the top. However,
833 * of course, if the line _hasn't_ moved into the
834 * scrollback then we don't do this, and cut them off
835 * at the top of the scroll region.
d48db8b4 836 *
837 * This applies to selstart and selend (for an existing
838 * selection), and also selanchor (for one being
839 * selected as we speak).
a792432e 840 */
887035a5 841 seltop = sb ? -term->savelines : topline;
842
843 if (term->selstart.y >= seltop &&
844 term->selstart.y <= botline) {
845 term->selstart.y--;
846 if (term->selstart.y < seltop) {
847 term->selstart.y = seltop;
848 term->selstart.x = 0;
4facdf84 849 }
850 }
887035a5 851 if (term->selend.y >= seltop && term->selend.y <= botline) {
852 term->selend.y--;
853 if (term->selend.y < seltop) {
854 term->selend.y = seltop;
855 term->selend.x = 0;
4facdf84 856 }
857 }
887035a5 858 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
859 term->selanchor.y--;
860 if (term->selanchor.y < seltop) {
861 term->selanchor.y = seltop;
862 term->selanchor.x = 0;
d48db8b4 863 }
864 }
4facdf84 865
866 lines--;
c9def1b8 867 }
374330e2 868 }
7c66d7d9 869#ifdef OPTIMISE_SCROLL
870 shift += term->disptop - olddisptop;
871 if (shift < term->rows && shift > -term->rows && shift != 0)
872 scroll_display(term, topline, botline, shift);
873#endif /* OPTIMISE_SCROLL */
374330e2 874}
875
37d2a505 876#ifdef OPTIMISE_SCROLL
877/*
341eb978 878 * Add a scroll of a region on the screen into the pending scroll list.
879 * `lines' is +ve for scrolling forward, -ve for backward.
880 *
881 * If the scroll is on the same area as the last scroll in the list,
882 * merge them.
883 */
03f60a62 884static void save_scroll(Terminal *term, int topline, int botline, int lines)
341eb978 885{
886 struct scrollregion *newscroll;
887 if (term->scrolltail &&
888 term->scrolltail->topline == topline &&
889 term->scrolltail->botline == botline) {
890 term->scrolltail->lines += lines;
891 } else {
892 newscroll = smalloc(sizeof(struct scrollregion));
893 newscroll->topline = topline;
894 newscroll->botline = botline;
895 newscroll->lines = lines;
896 newscroll->next = NULL;
897
898 if (!term->scrollhead)
899 term->scrollhead = newscroll;
900 else
901 term->scrolltail->next = newscroll;
902 term->scrolltail = newscroll;
903 }
904}
905
906/*
37d2a505 907 * Scroll the physical display, and our conception of it in disptext.
908 */
909static void scroll_display(Terminal *term, int topline, int botline, int lines)
910{
911 unsigned long *start, *end;
912 int distance, size, i;
913
914 start = term->disptext + topline * (term->cols + 1);
915 end = term->disptext + (botline + 1) * (term->cols + 1);
916 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
917 size = end - start - distance;
918 if (lines > 0) {
919 memmove(start, start + distance, size * TSIZE);
7c66d7d9 920 if (term->dispcurs >= start + distance &&
921 term->dispcurs <= start + distance + size)
922 term->dispcurs -= distance;
37d2a505 923 for (i = 0; i < distance; i++)
924 (start + size)[i] |= ATTR_INVALID;
925 } else {
926 memmove(start + distance, start, size * TSIZE);
7c66d7d9 927 if (term->dispcurs >= start && term->dispcurs <= start + size)
928 term->dispcurs += distance;
37d2a505 929 for (i = 0; i < distance; i++)
930 start[i] |= ATTR_INVALID;
931 }
341eb978 932 save_scroll(term, topline, botline, lines);
37d2a505 933}
934#endif /* OPTIMISE_SCROLL */
935
374330e2 936/*
937 * Move the cursor to a given position, clipping at boundaries. We
938 * may or may not want to clip at the scroll margin: marg_clip is 0
939 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
940 * even _being_ outside the margins.
941 */
887035a5 942static void move(Terminal *term, int x, int y, int marg_clip)
32874aea 943{
374330e2 944 if (x < 0)
945 x = 0;
887035a5 946 if (x >= term->cols)
947 x = term->cols - 1;
374330e2 948 if (marg_clip) {
887035a5 949 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
950 y < term->marg_t)
951 y = term->marg_t;
952 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
953 y > term->marg_b)
954 y = term->marg_b;
374330e2 955 }
956 if (y < 0)
957 y = 0;
887035a5 958 if (y >= term->rows)
959 y = term->rows - 1;
960 term->curs.x = x;
961 term->curs.y = y;
374330e2 962 fix_cpos;
887035a5 963 term->wrapnext = FALSE;
374330e2 964}
965
966/*
967 * Save or restore the cursor and SGR mode.
968 */
887035a5 969static void save_cursor(Terminal *term, int save)
32874aea 970{
374330e2 971 if (save) {
887035a5 972 term->savecurs = term->curs;
973 term->save_attr = term->curr_attr;
974 term->save_cset = term->cset;
975 term->save_utf = term->utf;
976 term->save_wnext = term->wrapnext;
977 term->save_csattr = term->cset_attr[term->cset];
978 term->save_sco_acs = term->sco_acs;
374330e2 979 } else {
887035a5 980 term->curs = term->savecurs;
c9def1b8 981 /* Make sure the window hasn't shrunk since the save */
887035a5 982 if (term->curs.x >= term->cols)
983 term->curs.x = term->cols - 1;
984 if (term->curs.y >= term->rows)
985 term->curs.y = term->rows - 1;
986
987 term->curr_attr = term->save_attr;
988 term->cset = term->save_cset;
989 term->utf = term->save_utf;
990 term->wrapnext = term->save_wnext;
8c028e65 991 /*
992 * wrapnext might reset to False if the x position is no
993 * longer at the rightmost edge.
994 */
887035a5 995 if (term->wrapnext && term->curs.x < term->cols-1)
996 term->wrapnext = FALSE;
997 term->cset_attr[term->cset] = term->save_csattr;
998 term->sco_acs = term->save_sco_acs;
374330e2 999 fix_cpos;
887035a5 1000 if (term->use_bce)
1001 term->erase_char = (' ' | ATTR_ASCII |
1002 (term->curr_attr &
1003 (ATTR_FGMASK | ATTR_BGMASK)));
374330e2 1004 }
1005}
1006
1007/*
3c7366f8 1008 * This function is called before doing _anything_ which affects
1009 * only part of a line of text. It is used to mark the boundary
1010 * between two character positions, and it indicates that some sort
1011 * of effect is going to happen on only one side of that boundary.
1012 *
1013 * The effect of this function is to check whether a CJK
1014 * double-width character is straddling the boundary, and to remove
1015 * it and replace it with two spaces if so. (Of course, one or
1016 * other of those spaces is then likely to be replaced with
1017 * something else again, as a result of whatever happens next.)
1018 *
1019 * Also, if the boundary is at the right-hand _edge_ of the screen,
1020 * it implies something deliberate is being done to the rightmost
1021 * column position; hence we must clear LATTR_WRAPPED2.
1022 *
1023 * The input to the function is the coordinates of the _second_
1024 * character of the pair.
1025 */
1026static void check_boundary(Terminal *term, int x, int y)
1027{
1028 unsigned long *ldata;
1029
1030 /* Validate input coordinates, just in case. */
1031 if (x == 0 || x > term->cols)
1032 return;
1033
1034 ldata = lineptr(y);
1035 if (x == term->cols) {
1036 ldata[x] &= ~LATTR_WRAPPED2;
1037 } else {
1038 if ((ldata[x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE) {
1039 ldata[x-1] = ldata[x] =
1040 (ldata[x-1] &~ (CHAR_MASK | CSET_MASK)) | ATTR_ASCII | ' ';
1041 }
1042 }
1043}
1044
1045/*
374330e2 1046 * Erase a large portion of the screen: the whole screen, or the
1047 * whole line, or parts thereof.
1048 */
887035a5 1049static void erase_lots(Terminal *term,
1050 int line_only, int from_begin, int to_end)
32874aea 1051{
260f3dec 1052 pos start, end;
4facdf84 1053 int erase_lattr;
4683b9b6 1054 int erasing_lines_from_top = 0;
374330e2 1055
1056 if (line_only) {
887035a5 1057 start.y = term->curs.y;
4facdf84 1058 start.x = 0;
887035a5 1059 end.y = term->curs.y + 1;
4facdf84 1060 end.x = 0;
1061 erase_lattr = FALSE;
374330e2 1062 } else {
4facdf84 1063 start.y = 0;
1064 start.x = 0;
887035a5 1065 end.y = term->rows;
4facdf84 1066 end.x = 0;
1067 erase_lattr = TRUE;
1068 }
1069 if (!from_begin) {
887035a5 1070 start = term->curs;
374330e2 1071 }
4facdf84 1072 if (!to_end) {
887035a5 1073 end = term->curs;
2a6dfe0e 1074 incpos(end);
4facdf84 1075 }
3c7366f8 1076 if (!from_begin || !to_end)
1077 check_boundary(term, term->curs.x, term->curs.y);
887035a5 1078 check_selection(term, start, end);
e14a5a13 1079
1080 /* Clear screen also forces a full window redraw, just in case. */
887035a5 1081 if (start.y == 0 && start.x == 0 && end.y == term->rows)
1082 term_invalidate(term);
e14a5a13 1083
4683b9b6 1084 /* Lines scrolled away shouldn't be brought back on if the terminal
1085 * resizes. */
1086 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
1087 erasing_lines_from_top = 1;
1088
1089 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
876e5d5e 1090 /* If it's a whole number of lines, starting at the top, and
1091 * we're fully erasing them, erase by scrolling and keep the
1092 * lines in the scrollback. */
1093 int scrolllines = end.y;
1094 if (end.y == term->rows) {
1095 /* Shrink until we find a non-empty row.*/
1096 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
1097 }
1098 if (scrolllines > 0)
1099 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
1100 fix_cpos;
1101 } else {
1102 unsigned long *ldata = lineptr(start.y);
1103 while (poslt(start, end)) {
1104 if (start.x == term->cols) {
1105 if (!erase_lattr)
1106 ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
1107 else
1108 ldata[start.x] = LATTR_NORM;
1109 } else {
1110 ldata[start.x] = term->erase_char;
1111 }
1112 if (incpos(start) && start.y < term->rows)
1113 ldata = lineptr(start.y);
1114 }
4facdf84 1115 }
4683b9b6 1116
1117 /* After an erase of lines from the top of the screen, we shouldn't
1118 * bring the lines back again if the terminal enlarges (since the user or
1119 * application has explictly thrown them away). */
1120 if (erasing_lines_from_top && !(term->alt_which))
1121 term->tempsblines = 0;
374330e2 1122}
1123
1124/*
1125 * Insert or delete characters within the current line. n is +ve if
1126 * insertion is desired, and -ve for deletion.
1127 */
887035a5 1128static void insch(Terminal *term, int n)
32874aea 1129{
374330e2 1130 int dir = (n < 0 ? -1 : +1);
1131 int m;
4facdf84 1132 pos cursplus;
1133 unsigned long *ldata;
374330e2 1134
1135 n = (n < 0 ? -n : n);
887035a5 1136 if (n > term->cols - term->curs.x)
1137 n = term->cols - term->curs.x;
1138 m = term->cols - term->curs.x - n;
1139 cursplus.y = term->curs.y;
1140 cursplus.x = term->curs.x + n;
1141 check_selection(term, term->curs, cursplus);
3c7366f8 1142 check_boundary(term, term->curs.x, term->curs.y);
1143 if (dir < 0)
1144 check_boundary(term, term->curs.x + n, term->curs.y);
887035a5 1145 ldata = lineptr(term->curs.y);
374330e2 1146 if (dir < 0) {
887035a5 1147 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
374330e2 1148 while (n--)
887035a5 1149 ldata[term->curs.x + m++] = term->erase_char;
374330e2 1150 } else {
887035a5 1151 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
374330e2 1152 while (n--)
887035a5 1153 ldata[term->curs.x + n] = term->erase_char;
374330e2 1154 }
1155}
1156
1157/*
1158 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1159 * whether the mode is a DEC private one or a normal one.)
1160 */
887035a5 1161static void toggle_mode(Terminal *term, int mode, int query, int state)
32874aea 1162{
286c6b86 1163 unsigned long ticks;
01c034ad 1164
32874aea 1165 if (query)
1166 switch (mode) {
1167 case 1: /* application cursor keys */
887035a5 1168 term->app_cursor_keys = state;
32874aea 1169 break;
1170 case 2: /* VT52 mode */
887035a5 1171 term->vt52_mode = !state;
1172 if (term->vt52_mode) {
1173 term->blink_is_real = FALSE;
1174 term->vt52_bold = FALSE;
4eeb7d09 1175 } else {
64734920 1176 term->blink_is_real = term->cfg.blinktext;
4eeb7d09 1177 }
32874aea 1178 break;
1179 case 3: /* 80/132 columns */
887035a5 1180 deselect(term);
64734920 1181 if (!term->cfg.no_remote_resize)
a8327734 1182 request_resize(term->frontend, state ? 132 : 80, term->rows);
887035a5 1183 term->reset_132 = state;
32874aea 1184 break;
1185 case 5: /* reverse video */
1186 /*
1187 * Toggle reverse video. If we receive an OFF within the
1188 * visual bell timeout period after an ON, we trigger an
1189 * effective visual bell, so that ESC[?5hESC[?5l will
1190 * always be an actually _visible_ visual bell.
1191 */
f7f27309 1192 ticks = GETTICKCOUNT();
286c6b86 1193 /* turn off a previous vbell to avoid inconsistencies */
887035a5 1194 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
1195 term->in_vbell = FALSE;
1196 if (term->rvideo && !state && /* we're turning it off... */
1197 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
286c6b86 1198 /* If there's no vbell timeout already, or this one lasts
1199 * longer, replace vbell_timeout with ours. */
887035a5 1200 if (!term->in_vbell ||
1201 (term->rvbell_startpoint - term->vbell_startpoint <
1202 VBELL_TIMEOUT))
1203 term->vbell_startpoint = term->rvbell_startpoint;
1204 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
1205 } else if (!term->rvideo && state) {
32874aea 1206 /* This is an ON, so we notice the time and save it. */
887035a5 1207 term->rvbell_startpoint = ticks;
32874aea 1208 }
887035a5 1209 term->rvideo = state;
1210 term->seen_disp_event = TRUE;
32874aea 1211 if (state)
887035a5 1212 term_update(term);
32874aea 1213 break;
1214 case 6: /* DEC origin mode */
887035a5 1215 term->dec_om = state;
32874aea 1216 break;
1217 case 7: /* auto wrap */
887035a5 1218 term->wrap = state;
32874aea 1219 break;
1220 case 8: /* auto key repeat */
887035a5 1221 term->repeat_off = !state;
32874aea 1222 break;
1223 case 10: /* set local edit mode */
887035a5 1224 term->term_editing = state;
b9d7bcad 1225 if (term->ldisc) /* cause ldisc to notice changes */
1226 ldisc_send(term->ldisc, NULL, 0, 0);
32874aea 1227 break;
1228 case 25: /* enable/disable cursor */
1229 compatibility2(OTHER, VT220);
887035a5 1230 term->cursor_on = state;
1231 term->seen_disp_event = TRUE;
32874aea 1232 break;
1233 case 47: /* alternate screen */
1234 compatibility(OTHER);
887035a5 1235 deselect(term);
64734920 1236 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
887035a5 1237 term->disptop = 0;
32874aea 1238 break;
1239 case 1000: /* xterm mouse 1 */
887035a5 1240 term->xterm_mouse = state ? 1 : 0;
a8327734 1241 set_raw_mouse_mode(term->frontend, state);
32874aea 1242 break;
1243 case 1002: /* xterm mouse 2 */
887035a5 1244 term->xterm_mouse = state ? 2 : 0;
a8327734 1245 set_raw_mouse_mode(term->frontend, state);
32874aea 1246 break;
8f9b6a1a 1247 case 1047: /* alternate screen */
1248 compatibility(OTHER);
887035a5 1249 deselect(term);
64734920 1250 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
887035a5 1251 term->disptop = 0;
8f9b6a1a 1252 break;
1253 case 1048: /* save/restore cursor */
887035a5 1254 save_cursor(term, state);
1255 if (!state) term->seen_disp_event = TRUE;
8f9b6a1a 1256 break;
1257 case 1049: /* cursor & alternate screen */
1258 if (state)
887035a5 1259 save_cursor(term, state);
1260 if (!state) term->seen_disp_event = TRUE;
8f9b6a1a 1261 compatibility(OTHER);
887035a5 1262 deselect(term);
64734920 1263 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
8f9b6a1a 1264 if (!state)
887035a5 1265 save_cursor(term, state);
1266 term->disptop = 0;
8f9b6a1a 1267 break;
32874aea 1268 } else
1269 switch (mode) {
1270 case 4: /* set insert mode */
1271 compatibility(VT102);
887035a5 1272 term->insert = state;
32874aea 1273 break;
1274 case 12: /* set echo mode */
887035a5 1275 term->term_echoing = !state;
b9d7bcad 1276 if (term->ldisc) /* cause ldisc to notice changes */
1277 ldisc_send(term->ldisc, NULL, 0, 0);
32874aea 1278 break;
1279 case 20: /* Return sends ... */
887035a5 1280 term->cr_lf_return = state;
32874aea 1281 break;
4eeb7d09 1282 case 34: /* Make cursor BIG */
1283 compatibility2(OTHER, VT220);
887035a5 1284 term->big_cursor = !state;
7594731b 1285 }
374330e2 1286}
1287
1288/*
1289 * Process an OSC sequence: set window title or icon name.
1290 */
887035a5 1291static void do_osc(Terminal *term)
32874aea 1292{
887035a5 1293 if (term->osc_w) {
1294 while (term->osc_strlen--)
1295 term->wordness[(unsigned char)
1296 term->osc_string[term->osc_strlen]] = term->esc_args[0];
374330e2 1297 } else {
887035a5 1298 term->osc_string[term->osc_strlen] = '\0';
1299 switch (term->esc_args[0]) {
374330e2 1300 case 0:
1301 case 1:
64734920 1302 if (!term->cfg.no_remote_wintitle)
a8327734 1303 set_icon(term->frontend, term->osc_string);
887035a5 1304 if (term->esc_args[0] == 1)
374330e2 1305 break;
1306 /* fall through: parameter 0 means set both */
1307 case 2:
1308 case 21:
64734920 1309 if (!term->cfg.no_remote_wintitle)
a8327734 1310 set_title(term->frontend, term->osc_string);
374330e2 1311 break;
1312 }
1313 }
1314}
1315
1316/*
b44b307a 1317 * ANSI printing routines.
1318 */
887035a5 1319static void term_print_setup(Terminal *term)
b44b307a 1320{
887035a5 1321 bufchain_clear(&term->printer_buf);
64734920 1322 term->print_job = printer_start_job(term->cfg.printer);
b44b307a 1323}
887035a5 1324static void term_print_flush(Terminal *term)
b44b307a 1325{
1326 void *data;
1327 int len;
1328 int size;
887035a5 1329 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1330 bufchain_prefix(&term->printer_buf, &data, &len);
b44b307a 1331 if (len > size-5)
1332 len = size-5;
887035a5 1333 printer_job_data(term->print_job, data, len);
1334 bufchain_consume(&term->printer_buf, len);
b44b307a 1335 }
1336}
887035a5 1337static void term_print_finish(Terminal *term)
b44b307a 1338{
1339 void *data;
1340 int len, size;
1341 char c;
1342
887035a5 1343 if (!term->printing && !term->only_printing)
1709795f 1344 return; /* we need do nothing */
1345
887035a5 1346 term_print_flush(term);
1347 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1348 bufchain_prefix(&term->printer_buf, &data, &len);
b44b307a 1349 c = *(char *)data;
1350 if (c == '\033' || c == '\233') {
887035a5 1351 bufchain_consume(&term->printer_buf, size);
b44b307a 1352 break;
1353 } else {
887035a5 1354 printer_job_data(term->print_job, &c, 1);
1355 bufchain_consume(&term->printer_buf, 1);
b44b307a 1356 }
1357 }
887035a5 1358 printer_finish_job(term->print_job);
1359 term->print_job = NULL;
1360 term->printing = term->only_printing = FALSE;
b44b307a 1361}
1362
1363/*
374330e2 1364 * Remove everything currently in `inbuf' and stick it up on the
1365 * in-memory display. There's a big state machine in here to
1366 * process escape sequences...
1367 */
887035a5 1368void term_out(Terminal *term)
32874aea 1369{
a748a096 1370 int c, unget;
1371 unsigned char localbuf[256], *chars;
1372 int nchars = 0;
1373
1374 unget = -1;
1375
1709795f 1376 chars = NULL; /* placate compiler warnings */
887035a5 1377 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
a748a096 1378 if (unget == -1) {
1379 if (nchars == 0) {
1380 void *ret;
887035a5 1381 bufchain_prefix(&term->inbuf, &ret, &nchars);
a748a096 1382 if (nchars > sizeof(localbuf))
1383 nchars = sizeof(localbuf);
1384 memcpy(localbuf, ret, nchars);
887035a5 1385 bufchain_consume(&term->inbuf, nchars);
a748a096 1386 chars = localbuf;
1387 assert(chars != NULL);
1388 }
1389 c = *chars++;
1390 nchars--;
c9def1b8 1391
a748a096 1392 /*
1393 * Optionally log the session traffic to a file. Useful for
1394 * debugging and possibly also useful for actual logging.
1395 */
64734920 1396 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
a8327734 1397 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
a748a096 1398 } else {
1399 c = unget;
1400 unget = -1;
5a16642f 1401 }
1402
e14a5a13 1403 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1404 * be able to display 8-bit characters, but I'll let that go 'cause
1405 * of i18n.
1406 */
4eeb7d09 1407
b44b307a 1408 /*
1409 * If we're printing, add the character to the printer
1410 * buffer.
1411 */
887035a5 1412 if (term->printing) {
1413 bufchain_add(&term->printer_buf, &c, 1);
b44b307a 1414
1415 /*
1416 * If we're in print-only mode, we use a much simpler
1417 * state machine designed only to recognise the ESC[4i
1418 * termination sequence.
1419 */
887035a5 1420 if (term->only_printing) {
b44b307a 1421 if (c == '\033')
887035a5 1422 term->print_state = 1;
b44b307a 1423 else if (c == (unsigned char)'\233')
887035a5 1424 term->print_state = 2;
1425 else if (c == '[' && term->print_state == 1)
1426 term->print_state = 2;
1427 else if (c == '4' && term->print_state == 2)
1428 term->print_state = 3;
1429 else if (c == 'i' && term->print_state == 3)
1430 term->print_state = 4;
b44b307a 1431 else
887035a5 1432 term->print_state = 0;
1433 if (term->print_state == 4) {
1434 term_print_finish(term);
b44b307a 1435 }
1436 continue;
1437 }
1438 }
1439
4eeb7d09 1440 /* First see about all those translations. */
887035a5 1441 if (term->termstate == TOPLEVEL) {
1442 if (in_utf(term))
1443 switch (term->utf_state) {
4eeb7d09 1444 case 0:
1445 if (c < 0x80) {
8f22582c 1446 /* UTF-8 must be stateless so we ignore iso2022. */
21d2b241 1447 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1448 c = term->ucsdata->unitab_ctrl[c];
8f22582c 1449 else c = ((unsigned char)c) | ATTR_ASCII;
1450 break;
4eeb7d09 1451 } else if ((c & 0xe0) == 0xc0) {
887035a5 1452 term->utf_size = term->utf_state = 1;
1453 term->utf_char = (c & 0x1f);
4eeb7d09 1454 } else if ((c & 0xf0) == 0xe0) {
887035a5 1455 term->utf_size = term->utf_state = 2;
1456 term->utf_char = (c & 0x0f);
4eeb7d09 1457 } else if ((c & 0xf8) == 0xf0) {
887035a5 1458 term->utf_size = term->utf_state = 3;
1459 term->utf_char = (c & 0x07);
4eeb7d09 1460 } else if ((c & 0xfc) == 0xf8) {
887035a5 1461 term->utf_size = term->utf_state = 4;
1462 term->utf_char = (c & 0x03);
4eeb7d09 1463 } else if ((c & 0xfe) == 0xfc) {
887035a5 1464 term->utf_size = term->utf_state = 5;
1465 term->utf_char = (c & 0x01);
4eeb7d09 1466 } else {
1467 c = UCSERR;
1468 break;
1469 }
1470 continue;
1471 case 1:
1472 case 2:
1473 case 3:
1474 case 4:
1475 case 5:
1476 if ((c & 0xC0) != 0x80) {
a748a096 1477 unget = c;
5a16642f 1478 c = UCSERR;
887035a5 1479 term->utf_state = 0;
4eeb7d09 1480 break;
1481 }
887035a5 1482 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1483 if (--term->utf_state)
4eeb7d09 1484 continue;
1485
887035a5 1486 c = term->utf_char;
4eeb7d09 1487
1488 /* Is somebody trying to be evil! */
1489 if (c < 0x80 ||
887035a5 1490 (c < 0x800 && term->utf_size >= 2) ||
1491 (c < 0x10000 && term->utf_size >= 3) ||
1492 (c < 0x200000 && term->utf_size >= 4) ||
1493 (c < 0x4000000 && term->utf_size >= 5))
4eeb7d09 1494 c = UCSERR;
1495
1496 /* Unicode line separator and paragraph separator are CR-LF */
1497 if (c == 0x2028 || c == 0x2029)
1498 c = 0x85;
1499
1500 /* High controls are probably a Baaad idea too. */
1501 if (c < 0xA0)
1502 c = 0xFFFD;
1503
1504 /* The UTF-16 surrogates are not nice either. */
1505 /* The standard give the option of decoding these:
1506 * I don't want to! */
1507 if (c >= 0xD800 && c < 0xE000)
1508 c = UCSERR;
1509
1510 /* ISO 10646 characters now limited to UTF-16 range. */
1511 if (c > 0x10FFFF)
1512 c = UCSERR;
1513
1514 /* This is currently a TagPhobic application.. */
1515 if (c >= 0xE0000 && c <= 0xE007F)
1516 continue;
1517
1518 /* U+FEFF is best seen as a null. */
1519 if (c == 0xFEFF)
1520 continue;
1521 /* But U+FFFE is an error. */
1522 if (c == 0xFFFE || c == 0xFFFF)
1523 c = UCSERR;
1524
1525 /* Oops this is a 16bit implementation */
1526 if (c >= 0x10000)
1527 c = 0xFFFD;
1528 break;
d3cb5465 1529 }
1530 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
887035a5 1531 else if(term->sco_acs &&
92e23ad9 1532 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
d3cb5465 1533 {
5dc6132d 1534 if (term->sco_acs == 2) c |= 0x80;
d3cb5465 1535 c |= ATTR_SCOACS;
4eeb7d09 1536 } else {
887035a5 1537 switch (term->cset_attr[term->cset]) {
4eeb7d09 1538 /*
1539 * Linedraw characters are different from 'ESC ( B'
1540 * only for a small range. For ones outside that
1541 * range, make sure we use the same font as well as
1542 * the same encoding.
1543 */
1544 case ATTR_LINEDRW:
21d2b241 1545 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1546 c = term->ucsdata->unitab_ctrl[c];
4eeb7d09 1547 else
1548 c = ((unsigned char) c) | ATTR_LINEDRW;
1549 break;
1550
1551 case ATTR_GBCHR:
1552 /* If UK-ASCII, make the '#' a LineDraw Pound */
1553 if (c == '#') {
1554 c = '}' | ATTR_LINEDRW;
1555 break;
1556 }
1557 /*FALLTHROUGH*/ case ATTR_ASCII:
21d2b241 1558 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1559 c = term->ucsdata->unitab_ctrl[c];
4eeb7d09 1560 else
1561 c = ((unsigned char) c) | ATTR_ASCII;
1562 break;
d3cb5465 1563 case ATTR_SCOACS:
1564 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1565 break;
4eeb7d09 1566 }
1567 }
1568 }
1569
1570 /* How about C1 controls ? */
887035a5 1571 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1572 !term->vt52_mode && has_compat(VT220)) {
1573 term->termstate = SEEN_ESC;
1574 term->esc_query = FALSE;
4eeb7d09 1575 c = '@' + (c & 0x1F);
1576 }
1577
1578 /* Or the GL control. */
887035a5 1579 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1580 if (term->curs.x && !term->wrapnext)
1581 term->curs.x--;
1582 term->wrapnext = FALSE;
4eeb7d09 1583 fix_cpos;
64734920 1584 if (!term->cfg.no_dbackspace) /* destructive bksp might be disabled */
887035a5 1585 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
4eeb7d09 1586 } else
1587 /* Or normal C0 controls. */
887035a5 1588 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
374330e2 1589 switch (c) {
1590 case '\005': /* terminal type query */
e14a5a13 1591 /* Strictly speaking this is VT100 but a VT100 defaults to
1592 * no response. Other terminals respond at their option.
1593 *
1594 * Don't put a CR in the default string as this tends to
1595 * upset some weird software.
1596 *
1597 * An xterm returns "xterm" (5 characters)
1598 */
32874aea 1599 compatibility(ANSIMIN);
b9d7bcad 1600 if (term->ldisc) {
e7fbcdd8 1601 char abuf[256], *s, *d;
32874aea 1602 int state = 0;
64734920 1603 for (s = term->cfg.answerback, d = abuf; *s; s++) {
32874aea 1604 if (state) {
1605 if (*s >= 'a' && *s <= 'z')
1606 *d++ = (*s - ('a' - 1));
1607 else if ((*s >= '@' && *s <= '_') ||
1608 *s == '?' || (*s & 0x80))
1609 *d++ = ('@' ^ *s);
1610 else if (*s == '~')
1611 *d++ = '^';
1612 state = 0;
1613 } else if (*s == '^') {
1614 state = 1;
1615 } else
4eeb7d09 1616 *d++ = *s;
e7fbcdd8 1617 }
b9d7bcad 1618 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1619 abuf, d - abuf, 0);
e7fbcdd8 1620 }
374330e2 1621 break;
1622 case '\007':
156686ef 1623 {
1624 struct beeptime *newbeep;
286c6b86 1625 unsigned long ticks;
156686ef 1626
f7f27309 1627 ticks = GETTICKCOUNT();
156686ef 1628
887035a5 1629 if (!term->beep_overloaded) {
156686ef 1630 newbeep = smalloc(sizeof(struct beeptime));
1631 newbeep->ticks = ticks;
1632 newbeep->next = NULL;
887035a5 1633 if (!term->beephead)
1634 term->beephead = newbeep;
156686ef 1635 else
887035a5 1636 term->beeptail->next = newbeep;
1637 term->beeptail = newbeep;
1638 term->nbeeps++;
156686ef 1639 }
1640
1641 /*
1642 * Throw out any beeps that happened more than
1643 * t seconds ago.
1644 */
887035a5 1645 while (term->beephead &&
64734920 1646 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
887035a5 1647 struct beeptime *tmp = term->beephead;
1648 term->beephead = tmp->next;
156686ef 1649 sfree(tmp);
887035a5 1650 if (!term->beephead)
1651 term->beeptail = NULL;
1652 term->nbeeps--;
156686ef 1653 }
1654
64734920 1655 if (term->cfg.bellovl && term->beep_overloaded &&
1656 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
156686ef 1657 /*
1658 * If we're currently overloaded and the
1659 * last beep was more than s seconds ago,
1660 * leave overload mode.
1661 */
887035a5 1662 term->beep_overloaded = FALSE;
64734920 1663 } else if (term->cfg.bellovl && !term->beep_overloaded &&
1664 term->nbeeps >= term->cfg.bellovl_n) {
156686ef 1665 /*
1666 * Now, if we have n or more beeps
1667 * remaining in the queue, go into overload
1668 * mode.
1669 */
887035a5 1670 term->beep_overloaded = TRUE;
156686ef 1671 }
887035a5 1672 term->lastbeep = ticks;
156686ef 1673
1674 /*
1675 * Perform an actual beep if we're not overloaded.
1676 */
64734920 1677 if (!term->cfg.bellovl || !term->beep_overloaded) {
1678 beep(term->frontend, term->cfg.beep);
1679 if (term->cfg.beep == BELL_VISUAL) {
887035a5 1680 term->in_vbell = TRUE;
1681 term->vbell_startpoint = ticks;
1682 term_update(term);
0ce89525 1683 }
156686ef 1684 }
887035a5 1685 term->disptop = 0;
156686ef 1686 }
374330e2 1687 break;
1688 case '\b':
887035a5 1689 if (term->curs.x == 0 &&
1690 (term->curs.y == 0 || term->wrap == 0))
1691 /* do nothing */ ;
1692 else if (term->curs.x == 0 && term->curs.y > 0)
1693 term->curs.x = term->cols - 1, term->curs.y--;
1694 else if (term->wrapnext)
1695 term->wrapnext = FALSE;
374330e2 1696 else
887035a5 1697 term->curs.x--;
374330e2 1698 fix_cpos;
887035a5 1699 term->seen_disp_event = TRUE;
374330e2 1700 break;
1701 case '\016':
32874aea 1702 compatibility(VT100);
887035a5 1703 term->cset = 1;
374330e2 1704 break;
1705 case '\017':
32874aea 1706 compatibility(VT100);
887035a5 1707 term->cset = 0;
374330e2 1708 break;
1709 case '\033':
887035a5 1710 if (term->vt52_mode)
1711 term->termstate = VT52_ESC;
e14a5a13 1712 else {
1713 compatibility(ANSIMIN);
887035a5 1714 term->termstate = SEEN_ESC;
1715 term->esc_query = FALSE;
e14a5a13 1716 }
374330e2 1717 break;
92e23ad9 1718 case '\015':
887035a5 1719 term->curs.x = 0;
1720 term->wrapnext = FALSE;
374330e2 1721 fix_cpos;
887035a5 1722 term->seen_disp_event = TRUE;
1723 term->paste_hold = 0;
a8327734 1724 if (term->logctx)
1725 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
374330e2 1726 break;
374330e2 1727 case '\014':
1a837633 1728 if (has_compat(SCOANSI)) {
887035a5 1729 move(term, 0, 0, 0);
1730 erase_lots(term, FALSE, FALSE, TRUE);
1731 term->disptop = 0;
1732 term->wrapnext = FALSE;
1733 term->seen_disp_event = 1;
1a837633 1734 break;
1735 }
1736 case '\013':
32874aea 1737 compatibility(VT100);
92e23ad9 1738 case '\012':
887035a5 1739 if (term->curs.y == term->marg_b)
1740 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1741 else if (term->curs.y < term->rows - 1)
1742 term->curs.y++;
64734920 1743 if (term->cfg.lfhascr)
887035a5 1744 term->curs.x = 0;
374330e2 1745 fix_cpos;
887035a5 1746 term->wrapnext = FALSE;
1747 term->seen_disp_event = 1;
1748 term->paste_hold = 0;
a8327734 1749 if (term->logctx)
1750 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
374330e2 1751 break;
1752 case '\t':
374330e2 1753 {
887035a5 1754 pos old_curs = term->curs;
1755 unsigned long *ldata = lineptr(term->curs.y);
c9def1b8 1756
1757 do {
887035a5 1758 term->curs.x++;
1759 } while (term->curs.x < term->cols - 1 &&
1760 !term->tabs[term->curs.x]);
c9def1b8 1761
887035a5 1762 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1763 if (term->curs.x >= term->cols / 2)
1764 term->curs.x = term->cols / 2 - 1;
32874aea 1765 } else {
887035a5 1766 if (term->curs.x >= term->cols)
1767 term->curs.x = term->cols - 1;
c9def1b8 1768 }
1769
374330e2 1770 fix_cpos;
887035a5 1771 check_selection(term, old_curs, term->curs);
374330e2 1772 }
887035a5 1773 term->seen_disp_event = TRUE;
374330e2 1774 break;
cabfd08c 1775 }
32874aea 1776 } else
887035a5 1777 switch (term->termstate) {
32874aea 1778 case TOPLEVEL:
887035a5 1779 /* Only graphic characters get this far;
1780 * ctrls are stripped above */
1781 if (term->wrapnext && term->wrap) {
1782 term->cpos[1] |= LATTR_WRAPPED;
1783 if (term->curs.y == term->marg_b)
1784 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1785 else if (term->curs.y < term->rows - 1)
1786 term->curs.y++;
1787 term->curs.x = 0;
32874aea 1788 fix_cpos;
887035a5 1789 term->wrapnext = FALSE;
374330e2 1790 }
887035a5 1791 if (term->insert)
1792 insch(term, 1);
1793 if (term->selstate != NO_SELECTION) {
1794 pos cursplus = term->curs;
32874aea 1795 incpos(cursplus);
887035a5 1796 check_selection(term, term->curs, cursplus);
374330e2 1797 }
a8327734 1798 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1799 term->logctx)
1800 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
4eeb7d09 1801 {
4eeb7d09 1802 int width = 0;
1803 if (DIRECT_CHAR(c))
1804 width = 1;
1805 if (!width)
1806 width = wcwidth((wchar_t) c);
1807 switch (width) {
1808 case 2:
3c7366f8 1809 /*
1810 * If we're about to display a double-width
1811 * character starting in the rightmost
1812 * column, then we do something special
1813 * instead. We must print a space in the
1814 * last column of the screen, then wrap;
1815 * and we also set LATTR_WRAPPED2 which
1816 * instructs subsequent cut-and-pasting not
1817 * only to splice this line to the one
1818 * after it, but to ignore the space in the
1819 * last character position as well.
1820 * (Because what was actually output to the
1821 * terminal was presumably just a sequence
1822 * of CJK characters, and we don't want a
1823 * space to be pasted in the middle of
1824 * those just because they had the
1825 * misfortune to start in the wrong parity
1826 * column. xterm concurs.)
1827 */
1828 check_boundary(term, term->curs.x, term->curs.y);
1829 check_boundary(term, term->curs.x+2, term->curs.y);
1830 if (term->curs.x == term->cols-1) {
1831 *term->cpos++ = ATTR_ASCII | ' ' | term->curr_attr;
1832 *term->cpos |= LATTR_WRAPPED | LATTR_WRAPPED2;
887035a5 1833 if (term->curs.y == term->marg_b)
1834 scroll(term, term->marg_t, term->marg_b,
1835 1, TRUE);
1836 else if (term->curs.y < term->rows - 1)
1837 term->curs.y++;
1838 term->curs.x = 0;
5a73255e 1839 fix_cpos;
3c7366f8 1840 /* Now we must check_boundary again, of course. */
1841 check_boundary(term, term->curs.x, term->curs.y);
1842 check_boundary(term, term->curs.x+2, term->curs.y);
4eeb7d09 1843 }
3c7366f8 1844 *term->cpos++ = c | term->curr_attr;
887035a5 1845 *term->cpos++ = UCSWIDE | term->curr_attr;
3c7366f8 1846 term->curs.x++;
5a73255e 1847 break;
4eeb7d09 1848 case 1:
3c7366f8 1849 check_boundary(term, term->curs.x, term->curs.y);
1850 check_boundary(term, term->curs.x+1, term->curs.y);
887035a5 1851 *term->cpos++ = c | term->curr_attr;
32874aea 1852 break;
4eeb7d09 1853 default:
1854 continue;
32874aea 1855 }
374330e2 1856 }
887035a5 1857 term->curs.x++;
1858 if (term->curs.x == term->cols) {
1859 term->cpos--;
1860 term->curs.x--;
1861 term->wrapnext = TRUE;
1862 if (term->wrap && term->vt52_mode) {
1863 term->cpos[1] |= LATTR_WRAPPED;
1864 if (term->curs.y == term->marg_b)
1865 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1866 else if (term->curs.y < term->rows - 1)
1867 term->curs.y++;
1868 term->curs.x = 0;
4eeb7d09 1869 fix_cpos;
887035a5 1870 term->wrapnext = FALSE;
4eeb7d09 1871 }
e14a5a13 1872 }
887035a5 1873 term->seen_disp_event = 1;
374330e2 1874 break;
32874aea 1875
32874aea 1876 case OSC_MAYBE_ST:
1877 /*
1878 * This state is virtually identical to SEEN_ESC, with the
1879 * exception that we have an OSC sequence in the pipeline,
1880 * and _if_ we see a backslash, we process it.
1881 */
1882 if (c == '\\') {
887035a5 1883 do_osc(term);
1884 term->termstate = TOPLEVEL;
32874aea 1885 break;
e14a5a13 1886 }
32874aea 1887 /* else fall through */
1888 case SEEN_ESC:
4eeb7d09 1889 if (c >= ' ' && c <= '/') {
887035a5 1890 if (term->esc_query)
1891 term->esc_query = -1;
4eeb7d09 1892 else
887035a5 1893 term->esc_query = c;
32874aea 1894 break;
4eeb7d09 1895 }
887035a5 1896 term->termstate = TOPLEVEL;
1897 switch (ANSI(c, term->esc_query)) {
32874aea 1898 case '[': /* enter CSI mode */
887035a5 1899 term->termstate = SEEN_CSI;
1900 term->esc_nargs = 1;
1901 term->esc_args[0] = ARG_DEFAULT;
1902 term->esc_query = FALSE;
32874aea 1903 break;
1904 case ']': /* xterm escape sequences */
1905 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1906 compatibility(OTHER);
887035a5 1907 term->termstate = SEEN_OSC;
1908 term->esc_args[0] = 0;
32874aea 1909 break;
32874aea 1910 case '7': /* save cursor */
1911 compatibility(VT100);
887035a5 1912 save_cursor(term, TRUE);
32874aea 1913 break;
1914 case '8': /* restore cursor */
1915 compatibility(VT100);
887035a5 1916 save_cursor(term, FALSE);
1917 term->seen_disp_event = TRUE;
32874aea 1918 break;
1919 case '=':
1920 compatibility(VT100);
887035a5 1921 term->app_keypad_keys = TRUE;
32874aea 1922 break;
1923 case '>':
1924 compatibility(VT100);
887035a5 1925 term->app_keypad_keys = FALSE;
32874aea 1926 break;
1927 case 'D': /* exactly equivalent to LF */
1928 compatibility(VT100);
887035a5 1929 if (term->curs.y == term->marg_b)
1930 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1931 else if (term->curs.y < term->rows - 1)
1932 term->curs.y++;
32874aea 1933 fix_cpos;
887035a5 1934 term->wrapnext = FALSE;
1935 term->seen_disp_event = TRUE;
32874aea 1936 break;
1937 case 'E': /* exactly equivalent to CR-LF */
1938 compatibility(VT100);
887035a5 1939 term->curs.x = 0;
1940 if (term->curs.y == term->marg_b)
1941 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1942 else if (term->curs.y < term->rows - 1)
1943 term->curs.y++;
32874aea 1944 fix_cpos;
887035a5 1945 term->wrapnext = FALSE;
1946 term->seen_disp_event = TRUE;
32874aea 1947 break;
1948 case 'M': /* reverse index - backwards LF */
1949 compatibility(VT100);
887035a5 1950 if (term->curs.y == term->marg_t)
1951 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1952 else if (term->curs.y > 0)
1953 term->curs.y--;
32874aea 1954 fix_cpos;
887035a5 1955 term->wrapnext = FALSE;
1956 term->seen_disp_event = TRUE;
32874aea 1957 break;
1958 case 'Z': /* terminal type query */
1959 compatibility(VT100);
b9d7bcad 1960 if (term->ldisc)
1961 ldisc_send(term->ldisc, term->id_string,
1962 strlen(term->id_string), 0);
32874aea 1963 break;
1964 case 'c': /* restore power-on settings */
1965 compatibility(VT100);
887035a5 1966 power_on(term);
b9d7bcad 1967 if (term->ldisc) /* cause ldisc to notice changes */
1968 ldisc_send(term->ldisc, NULL, 0, 0);
887035a5 1969 if (term->reset_132) {
64734920 1970 if (!term->cfg.no_remote_resize)
a8327734 1971 request_resize(term->frontend, 80, term->rows);
887035a5 1972 term->reset_132 = 0;
374330e2 1973 }
32874aea 1974 fix_cpos;
887035a5 1975 term->disptop = 0;
1976 term->seen_disp_event = TRUE;
32874aea 1977 break;
32874aea 1978 case 'H': /* set a tab */
1979 compatibility(VT100);
887035a5 1980 term->tabs[term->curs.x] = TRUE;
32874aea 1981 break;
4eeb7d09 1982
1983 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1984 compatibility(VT100);
1985 {
1986 unsigned long *ldata;
1987 int i, j;
1988 pos scrtop, scrbot;
1989
887035a5 1990 for (i = 0; i < term->rows; i++) {
4eeb7d09 1991 ldata = lineptr(i);
887035a5 1992 for (j = 0; j < term->cols; j++)
4eeb7d09 1993 ldata[j] = ATTR_DEFAULT | 'E';
887035a5 1994 ldata[term->cols] = 0;
4eeb7d09 1995 }
887035a5 1996 term->disptop = 0;
1997 term->seen_disp_event = TRUE;
4eeb7d09 1998 scrtop.x = scrtop.y = 0;
1999 scrbot.x = 0;
887035a5 2000 scrbot.y = term->rows;
2001 check_selection(term, scrtop, scrbot);
4eeb7d09 2002 }
2003 break;
2004
2005 case ANSI('3', '#'):
2006 case ANSI('4', '#'):
2007 case ANSI('5', '#'):
2008 case ANSI('6', '#'):
2009 compatibility(VT100);
2010 {
2011 unsigned long nlattr;
2012 unsigned long *ldata;
887035a5 2013 switch (ANSI(c, term->esc_query)) {
4eeb7d09 2014 case ANSI('3', '#'):
2015 nlattr = LATTR_TOP;
2016 break;
2017 case ANSI('4', '#'):
2018 nlattr = LATTR_BOT;
2019 break;
2020 case ANSI('5', '#'):
2021 nlattr = LATTR_NORM;
2022 break;
2d466ffd 2023 default: /* spiritually case ANSI('6', '#'): */
4eeb7d09 2024 nlattr = LATTR_WIDE;
2025 break;
2026 }
887035a5 2027 ldata = lineptr(term->curs.y);
2028 ldata[term->cols] &= ~LATTR_MODE;
2029 ldata[term->cols] |= nlattr;
4eeb7d09 2030 }
2031 break;
2032
2033 case ANSI('A', '('):
2034 compatibility(VT100);
64734920 2035 if (!term->cfg.no_remote_charset)
887035a5 2036 term->cset_attr[0] = ATTR_GBCHR;
4eeb7d09 2037 break;
2038 case ANSI('B', '('):
2039 compatibility(VT100);
64734920 2040 if (!term->cfg.no_remote_charset)
887035a5 2041 term->cset_attr[0] = ATTR_ASCII;
4eeb7d09 2042 break;
2043 case ANSI('0', '('):
2044 compatibility(VT100);
64734920 2045 if (!term->cfg.no_remote_charset)
887035a5 2046 term->cset_attr[0] = ATTR_LINEDRW;
4eeb7d09 2047 break;
d3cb5465 2048 case ANSI('U', '('):
2049 compatibility(OTHER);
64734920 2050 if (!term->cfg.no_remote_charset)
887035a5 2051 term->cset_attr[0] = ATTR_SCOACS;
d3cb5465 2052 break;
4eeb7d09 2053
2054 case ANSI('A', ')'):
2055 compatibility(VT100);
64734920 2056 if (!term->cfg.no_remote_charset)
887035a5 2057 term->cset_attr[1] = ATTR_GBCHR;
4eeb7d09 2058 break;
2059 case ANSI('B', ')'):
2060 compatibility(VT100);
64734920 2061 if (!term->cfg.no_remote_charset)
887035a5 2062 term->cset_attr[1] = ATTR_ASCII;
4eeb7d09 2063 break;
2064 case ANSI('0', ')'):
2065 compatibility(VT100);
64734920 2066 if (!term->cfg.no_remote_charset)
887035a5 2067 term->cset_attr[1] = ATTR_LINEDRW;
4eeb7d09 2068 break;
d3cb5465 2069 case ANSI('U', ')'):
2070 compatibility(OTHER);
64734920 2071 if (!term->cfg.no_remote_charset)
887035a5 2072 term->cset_attr[1] = ATTR_SCOACS;
d3cb5465 2073 break;
4eeb7d09 2074
2075 case ANSI('8', '%'): /* Old Linux code */
2076 case ANSI('G', '%'):
2077 compatibility(OTHER);
64734920 2078 if (!term->cfg.no_remote_charset)
887035a5 2079 term->utf = 1;
4eeb7d09 2080 break;
2081 case ANSI('@', '%'):
2082 compatibility(OTHER);
64734920 2083 if (!term->cfg.no_remote_charset)
887035a5 2084 term->utf = 0;
4eeb7d09 2085 break;
374330e2 2086 }
2087 break;
32874aea 2088 case SEEN_CSI:
887035a5 2089 term->termstate = TOPLEVEL; /* default */
32874aea 2090 if (isdigit(c)) {
887035a5 2091 if (term->esc_nargs <= ARGS_MAX) {
2092 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
2093 term->esc_args[term->esc_nargs - 1] = 0;
2094 term->esc_args[term->esc_nargs - 1] =
2095 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
32874aea 2096 }
887035a5 2097 term->termstate = SEEN_CSI;
32874aea 2098 } else if (c == ';') {
887035a5 2099 if (++term->esc_nargs <= ARGS_MAX)
2100 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
2101 term->termstate = SEEN_CSI;
32874aea 2102 } else if (c < '@') {
887035a5 2103 if (term->esc_query)
2104 term->esc_query = -1;
32874aea 2105 else if (c == '?')
887035a5 2106 term->esc_query = TRUE;
32874aea 2107 else
887035a5 2108 term->esc_query = c;
2109 term->termstate = SEEN_CSI;
32874aea 2110 } else
887035a5 2111 switch (ANSI(c, term->esc_query)) {
32874aea 2112 case 'A': /* move up N lines */
887035a5 2113 move(term, term->curs.x,
2114 term->curs.y - def(term->esc_args[0], 1), 1);
2115 term->seen_disp_event = TRUE;
32874aea 2116 break;
2117 case 'e': /* move down N lines */
2118 compatibility(ANSI);
5442e92f 2119 /* FALLTHROUGH */
32874aea 2120 case 'B':
887035a5 2121 move(term, term->curs.x,
2122 term->curs.y + def(term->esc_args[0], 1), 1);
2123 term->seen_disp_event = TRUE;
32874aea 2124 break;
32874aea 2125 case ANSI('c', '>'): /* report xterm version */
2126 compatibility(OTHER);
2127 /* this reports xterm version 136 so that VIM can
2128 use the drag messages from the mouse reporting */
b9d7bcad 2129 if (term->ldisc)
2130 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
32874aea 2131 break;
5442e92f 2132 case 'a': /* move right N cols */
2133 compatibility(ANSI);
2134 /* FALLTHROUGH */
32874aea 2135 case 'C':
887035a5 2136 move(term, term->curs.x + def(term->esc_args[0], 1),
2137 term->curs.y, 1);
2138 term->seen_disp_event = TRUE;
32874aea 2139 break;
2140 case 'D': /* move left N cols */
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 'E': /* move down N lines and CR */
2146 compatibility(ANSI);
887035a5 2147 move(term, 0,
2148 term->curs.y + def(term->esc_args[0], 1), 1);
2149 term->seen_disp_event = TRUE;
32874aea 2150 break;
2151 case 'F': /* move up N lines and CR */
2152 compatibility(ANSI);
887035a5 2153 move(term, 0,
2154 term->curs.y - def(term->esc_args[0], 1), 1);
2155 term->seen_disp_event = TRUE;
32874aea 2156 break;
2157 case 'G':
2158 case '`': /* set horizontal posn */
2159 compatibility(ANSI);
887035a5 2160 move(term, def(term->esc_args[0], 1) - 1,
2161 term->curs.y, 0);
2162 term->seen_disp_event = TRUE;
32874aea 2163 break;
2164 case 'd': /* set vertical posn */
2165 compatibility(ANSI);
887035a5 2166 move(term, term->curs.x,
2167 ((term->dec_om ? term->marg_t : 0) +
2168 def(term->esc_args[0], 1) - 1),
2169 (term->dec_om ? 2 : 0));
2170 term->seen_disp_event = TRUE;
32874aea 2171 break;
2172 case 'H':
2173 case 'f': /* set horz and vert posns at once */
887035a5 2174 if (term->esc_nargs < 2)
2175 term->esc_args[1] = ARG_DEFAULT;
2176 move(term, def(term->esc_args[1], 1) - 1,
2177 ((term->dec_om ? term->marg_t : 0) +
2178 def(term->esc_args[0], 1) - 1),
2179 (term->dec_om ? 2 : 0));
2180 term->seen_disp_event = TRUE;
32874aea 2181 break;
2182 case 'J': /* erase screen or parts of it */
2183 {
887035a5 2184 unsigned int i = def(term->esc_args[0], 0) + 1;
32874aea 2185 if (i > 3)
2186 i = 0;
887035a5 2187 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
32874aea 2188 }
887035a5 2189 term->disptop = 0;
2190 term->seen_disp_event = TRUE;
32874aea 2191 break;
2192 case 'K': /* erase line or parts of it */
2193 {
887035a5 2194 unsigned int i = def(term->esc_args[0], 0) + 1;
32874aea 2195 if (i > 3)
2196 i = 0;
887035a5 2197 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
32874aea 2198 }
887035a5 2199 term->seen_disp_event = TRUE;
32874aea 2200 break;
2201 case 'L': /* insert lines */
2202 compatibility(VT102);
887035a5 2203 if (term->curs.y <= term->marg_b)
2204 scroll(term, term->curs.y, term->marg_b,
2205 -def(term->esc_args[0], 1), FALSE);
32874aea 2206 fix_cpos;
887035a5 2207 term->seen_disp_event = TRUE;
32874aea 2208 break;
2209 case 'M': /* delete lines */
2210 compatibility(VT102);
887035a5 2211 if (term->curs.y <= term->marg_b)
2212 scroll(term, term->curs.y, term->marg_b,
2213 def(term->esc_args[0], 1),
32874aea 2214 TRUE);
2215 fix_cpos;
887035a5 2216 term->seen_disp_event = TRUE;
32874aea 2217 break;
2218 case '@': /* insert chars */
2219 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2220 compatibility(VT102);
887035a5 2221 insch(term, def(term->esc_args[0], 1));
2222 term->seen_disp_event = TRUE;
32874aea 2223 break;
2224 case 'P': /* delete chars */
2225 compatibility(VT102);
887035a5 2226 insch(term, -def(term->esc_args[0], 1));
2227 term->seen_disp_event = TRUE;
32874aea 2228 break;
2229 case 'c': /* terminal type query */
2230 compatibility(VT100);
2231 /* This is the response for a VT102 */
b9d7bcad 2232 if (term->ldisc)
2233 ldisc_send(term->ldisc, term->id_string,
2234 strlen(term->id_string), 0);
32874aea 2235 break;
2236 case 'n': /* cursor position query */
b9d7bcad 2237 if (term->ldisc) {
2238 if (term->esc_args[0] == 6) {
2239 char buf[32];
2240 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
2241 term->curs.x + 1);
2242 ldisc_send(term->ldisc, buf, strlen(buf), 0);
2243 } else if (term->esc_args[0] == 5) {
2244 ldisc_send(term->ldisc, "\033[0n", 4, 0);
2245 }
32874aea 2246 }
2247 break;
2248 case 'h': /* toggle modes to high */
2249 case ANSI_QUE('h'):
2250 compatibility(VT100);
2251 {
2252 int i;
887035a5 2253 for (i = 0; i < term->esc_nargs; i++)
2254 toggle_mode(term, term->esc_args[i],
2255 term->esc_query, TRUE);
32874aea 2256 }
2257 break;
b44b307a 2258 case 'i':
2259 case ANSI_QUE('i'):
2260 compatibility(VT100);
2261 {
887035a5 2262 if (term->esc_nargs != 1) break;
64734920 2263 if (term->esc_args[0] == 5 && *term->cfg.printer) {
887035a5 2264 term->printing = TRUE;
2265 term->only_printing = !term->esc_query;
2266 term->print_state = 0;
2267 term_print_setup(term);
2268 } else if (term->esc_args[0] == 4 &&
2269 term->printing) {
2270 term_print_finish(term);
b44b307a 2271 }
2272 }
2273 break;
32874aea 2274 case 'l': /* toggle modes to low */
2275 case ANSI_QUE('l'):
2276 compatibility(VT100);
2277 {
2278 int i;
887035a5 2279 for (i = 0; i < term->esc_nargs; i++)
2280 toggle_mode(term, term->esc_args[i],
2281 term->esc_query, FALSE);
32874aea 2282 }
2283 break;
2284 case 'g': /* clear tabs */
2285 compatibility(VT100);
887035a5 2286 if (term->esc_nargs == 1) {
2287 if (term->esc_args[0] == 0) {
2288 term->tabs[term->curs.x] = FALSE;
2289 } else if (term->esc_args[0] == 3) {
32874aea 2290 int i;
887035a5 2291 for (i = 0; i < term->cols; i++)
2292 term->tabs[i] = FALSE;
32874aea 2293 }
2294 }
2295 break;
2296 case 'r': /* set scroll margins */
2297 compatibility(VT100);
887035a5 2298 if (term->esc_nargs <= 2) {
32874aea 2299 int top, bot;
887035a5 2300 top = def(term->esc_args[0], 1) - 1;
2301 bot = (term->esc_nargs <= 1
2302 || term->esc_args[1] == 0 ?
2303 term->rows :
2304 def(term->esc_args[1], term->rows)) - 1;
2305 if (bot >= term->rows)
2306 bot = term->rows - 1;
32874aea 2307 /* VTTEST Bug 9 - if region is less than 2 lines
2308 * don't change region.
2309 */
2310 if (bot - top > 0) {
887035a5 2311 term->marg_t = top;
2312 term->marg_b = bot;
2313 term->curs.x = 0;
32874aea 2314 /*
2315 * I used to think the cursor should be
2316 * placed at the top of the newly marginned
2317 * area. Apparently not: VMS TPU falls over
2318 * if so.
2319 *
887035a5 2320 * Well actually it should for
2321 * Origin mode - RDB
32874aea 2322 */
887035a5 2323 term->curs.y = (term->dec_om ?
2324 term->marg_t : 0);
32874aea 2325 fix_cpos;
887035a5 2326 term->seen_disp_event = TRUE;
32874aea 2327 }
2328 }
2329 break;
2330 case 'm': /* set graphics rendition */
2331 {
2332 /*
887035a5 2333 * A VT100 without the AVO only had one
2334 * attribute, either underline or
2335 * reverse video depending on the
2336 * cursor type, this was selected by
2337 * CSI 7m.
32874aea 2338 *
2339 * case 2:
887035a5 2340 * This is sometimes DIM, eg on the
2341 * GIGI and Linux
32874aea 2342 * case 8:
4eeb7d09 2343 * This is sometimes INVIS various ANSI.
32874aea 2344 * case 21:
2345 * This like 22 disables BOLD, DIM and INVIS
2346 *
887035a5 2347 * The ANSI colours appear on any
2348 * terminal that has colour (obviously)
2349 * but the interaction between sgr0 and
2350 * the colours varies but is usually
2351 * related to the background colour
2352 * erase item. The interaction between
2353 * colour attributes and the mono ones
2354 * is also very implementation
2355 * dependent.
32874aea 2356 *
887035a5 2357 * The 39 and 49 attributes are likely
2358 * to be unimplemented.
32874aea 2359 */
2360 int i;
887035a5 2361 for (i = 0; i < term->esc_nargs; i++) {
2362 switch (def(term->esc_args[i], 0)) {
32874aea 2363 case 0: /* restore defaults */
887035a5 2364 term->curr_attr = ATTR_DEFAULT;
32874aea 2365 break;
2366 case 1: /* enable bold */
2367 compatibility(VT100AVO);
887035a5 2368 term->curr_attr |= ATTR_BOLD;
32874aea 2369 break;
2370 case 21: /* (enable double underline) */
2371 compatibility(OTHER);
2372 case 4: /* enable underline */
2373 compatibility(VT100AVO);
887035a5 2374 term->curr_attr |= ATTR_UNDER;
32874aea 2375 break;
2376 case 5: /* enable blink */
2377 compatibility(VT100AVO);
887035a5 2378 term->curr_attr |= ATTR_BLINK;
32874aea 2379 break;
2380 case 7: /* enable reverse video */
887035a5 2381 term->curr_attr |= ATTR_REVERSE;
32874aea 2382 break;
d3cb5465 2383 case 10: /* SCO acs off */
2384 compatibility(SCOANSI);
64734920 2385 if (term->cfg.no_remote_charset) break;
887035a5 2386 term->sco_acs = 0; break;
d3cb5465 2387 case 11: /* SCO acs on */
2388 compatibility(SCOANSI);
64734920 2389 if (term->cfg.no_remote_charset) break;
887035a5 2390 term->sco_acs = 1; break;
5dc6132d 2391 case 12: /* SCO acs on, |0x80 */
d3cb5465 2392 compatibility(SCOANSI);
64734920 2393 if (term->cfg.no_remote_charset) break;
887035a5 2394 term->sco_acs = 2; break;
32874aea 2395 case 22: /* disable bold */
2396 compatibility2(OTHER, VT220);
887035a5 2397 term->curr_attr &= ~ATTR_BOLD;
32874aea 2398 break;
2399 case 24: /* disable underline */
2400 compatibility2(OTHER, VT220);
887035a5 2401 term->curr_attr &= ~ATTR_UNDER;
32874aea 2402 break;
2403 case 25: /* disable blink */
2404 compatibility2(OTHER, VT220);
887035a5 2405 term->curr_attr &= ~ATTR_BLINK;
32874aea 2406 break;
2407 case 27: /* disable reverse video */
2408 compatibility2(OTHER, VT220);
887035a5 2409 term->curr_attr &= ~ATTR_REVERSE;
32874aea 2410 break;
2411 case 30:
2412 case 31:
2413 case 32:
2414 case 33:
2415 case 34:
2416 case 35:
2417 case 36:
2418 case 37:
2419 /* foreground */
887035a5 2420 term->curr_attr &= ~ATTR_FGMASK;
2421 term->curr_attr |=
2422 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
32874aea 2423 break;
37ca32ed 2424 case 90:
2425 case 91:
2426 case 92:
2427 case 93:
2428 case 94:
2429 case 95:
2430 case 96:
2431 case 97:
2432 /* xterm-style bright foreground */
2433 term->curr_attr &= ~ATTR_FGMASK;
2434 term->curr_attr |=
2435 ((term->esc_args[i] - 90 + 16)
2436 << ATTR_FGSHIFT);
2437 break;
32874aea 2438 case 39: /* default-foreground */
887035a5 2439 term->curr_attr &= ~ATTR_FGMASK;
2440 term->curr_attr |= ATTR_DEFFG;
32874aea 2441 break;
2442 case 40:
2443 case 41:
2444 case 42:
2445 case 43:
2446 case 44:
2447 case 45:
2448 case 46:
2449 case 47:
2450 /* background */
887035a5 2451 term->curr_attr &= ~ATTR_BGMASK;
2452 term->curr_attr |=
2453 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
32874aea 2454 break;
37ca32ed 2455 case 100:
2456 case 101:
2457 case 102:
2458 case 103:
2459 case 104:
2460 case 105:
2461 case 106:
2462 case 107:
2463 /* xterm-style bright background */
2464 term->curr_attr &= ~ATTR_BGMASK;
2465 term->curr_attr |=
2466 ((term->esc_args[i] - 100 + 16)
2467 << ATTR_BGSHIFT);
2468 break;
32874aea 2469 case 49: /* default-background */
887035a5 2470 term->curr_attr &= ~ATTR_BGMASK;
2471 term->curr_attr |= ATTR_DEFBG;
32874aea 2472 break;
2473 }
2474 }
887035a5 2475 if (term->use_bce)
2476 term->erase_char = (' ' | ATTR_ASCII |
2477 (term->curr_attr &
2478 (ATTR_FGMASK |
2479 ATTR_BGMASK)));
32874aea 2480 }
2481 break;
2482 case 's': /* save cursor */
887035a5 2483 save_cursor(term, TRUE);
32874aea 2484 break;
2485 case 'u': /* restore cursor */
887035a5 2486 save_cursor(term, FALSE);
2487 term->seen_disp_event = TRUE;
32874aea 2488 break;
2489 case 't': /* set page size - ie window height */
374330e2 2490 /*
32874aea 2491 * VT340/VT420 sequence DECSLPP, DEC only allows values
2492 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2493 * illegal values (eg first arg 1..9) for window changing
2494 * and reports.
2495 */
887035a5 2496 if (term->esc_nargs <= 1
2497 && (term->esc_args[0] < 1 ||
2498 term->esc_args[0] >= 24)) {
68f9b3d9 2499 compatibility(VT340TEXT);
64734920 2500 if (!term->cfg.no_remote_resize)
a8327734 2501 request_resize(term->frontend, term->cols,
887035a5 2502 def(term->esc_args[0], 24));
2503 deselect(term);
2504 } else if (term->esc_nargs >= 1 &&
2505 term->esc_args[0] >= 1 &&
2506 term->esc_args[0] < 24) {
68f9b3d9 2507 compatibility(OTHER);
2508
887035a5 2509 switch (term->esc_args[0]) {
68f9b3d9 2510 int x, y, len;
2511 char buf[80], *p;
2512 case 1:
a8327734 2513 set_iconic(term->frontend, FALSE);
68f9b3d9 2514 break;
2515 case 2:
a8327734 2516 set_iconic(term->frontend, TRUE);
68f9b3d9 2517 break;
2518 case 3:
887035a5 2519 if (term->esc_nargs >= 3) {
64734920 2520 if (!term->cfg.no_remote_resize)
a8327734 2521 move_window(term->frontend,
2522 def(term->esc_args[1], 0),
887035a5 2523 def(term->esc_args[2], 0));
68f9b3d9 2524 }
2525 break;
2526 case 4:
2527 /* We should resize the window to a given
2528 * size in pixels here, but currently our
2529 * resizing code isn't healthy enough to
2530 * manage it. */
2531 break;
2532 case 5:
a8327734 2533 /* move to top */
2534 set_zorder(term->frontend, TRUE);
68f9b3d9 2535 break;
2536 case 6:
a8327734 2537 /* move to bottom */
2538 set_zorder(term->frontend, FALSE);
68f9b3d9 2539 break;
2540 case 7:
a8327734 2541 refresh_window(term->frontend);
68f9b3d9 2542 break;
2543 case 8:
887035a5 2544 if (term->esc_nargs >= 3) {
64734920 2545 if (!term->cfg.no_remote_resize)
a8327734 2546 request_resize(term->frontend,
64734920 2547 def(term->esc_args[2], term->cfg.width),
2548 def(term->esc_args[1], term->cfg.height));
68f9b3d9 2549 }
2550 break;
2551 case 9:
887035a5 2552 if (term->esc_nargs >= 2)
a8327734 2553 set_zoomed(term->frontend,
2554 term->esc_args[1] ?
887035a5 2555 TRUE : FALSE);
68f9b3d9 2556 break;
2557 case 11:
b9d7bcad 2558 if (term->ldisc)
2559 ldisc_send(term->ldisc,
a8327734 2560 is_iconic(term->frontend) ?
2561 "\033[1t" : "\033[2t", 4, 0);
68f9b3d9 2562 break;
2563 case 13:
b9d7bcad 2564 if (term->ldisc) {
a8327734 2565 get_window_pos(term->frontend, &x, &y);
b9d7bcad 2566 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2567 ldisc_send(term->ldisc, buf, len, 0);
2568 }
68f9b3d9 2569 break;
2570 case 14:
b9d7bcad 2571 if (term->ldisc) {
a8327734 2572 get_window_pixels(term->frontend, &x, &y);
b9d7bcad 2573 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2574 ldisc_send(term->ldisc, buf, len, 0);
2575 }
68f9b3d9 2576 break;
2577 case 18:
b9d7bcad 2578 if (term->ldisc) {
2579 len = sprintf(buf, "\033[8;%d;%dt",
2580 term->rows, term->cols);
2581 ldisc_send(term->ldisc, buf, len, 0);
2582 }
68f9b3d9 2583 break;
2584 case 19:
2585 /*
2586 * Hmmm. Strictly speaking we
2587 * should return `the size of the
2588 * screen in characters', but
2589 * that's not easy: (a) window
2590 * furniture being what it is it's
2591 * hard to compute, and (b) in
2592 * resize-font mode maximising the
2593 * window wouldn't change the
2594 * number of characters. *shrug*. I
2595 * think we'll ignore it for the
2596 * moment and see if anyone
2597 * complains, and then ask them
2598 * what they would like it to do.
2599 */
2600 break;
2601 case 20:
b9d7bcad 2602 if (term->ldisc) {
a8327734 2603 p = get_window_title(term->frontend, TRUE);
b9d7bcad 2604 len = strlen(p);
2605 ldisc_send(term->ldisc, "\033]L", 3, 0);
2606 ldisc_send(term->ldisc, p, len, 0);
2607 ldisc_send(term->ldisc, "\033\\", 2, 0);
2608 }
68f9b3d9 2609 break;
2610 case 21:
b9d7bcad 2611 if (term->ldisc) {
a8327734 2612 p = get_window_title(term->frontend,FALSE);
b9d7bcad 2613 len = strlen(p);
2614 ldisc_send(term->ldisc, "\033]l", 3, 0);
2615 ldisc_send(term->ldisc, p, len, 0);
2616 ldisc_send(term->ldisc, "\033\\", 2, 0);
2617 }
68f9b3d9 2618 break;
2619 }
32874aea 2620 }
2621 break;
1a837633 2622 case 'S':
2623 compatibility(SCOANSI);
887035a5 2624 scroll(term, term->marg_t, term->marg_b,
2625 def(term->esc_args[0], 1), TRUE);
1a837633 2626 fix_cpos;
887035a5 2627 term->wrapnext = FALSE;
2628 term->seen_disp_event = TRUE;
1a837633 2629 break;
2630 case 'T':
2631 compatibility(SCOANSI);
887035a5 2632 scroll(term, term->marg_t, term->marg_b,
2633 -def(term->esc_args[0], 1), TRUE);
1a837633 2634 fix_cpos;
887035a5 2635 term->wrapnext = FALSE;
2636 term->seen_disp_event = TRUE;
1a837633 2637 break;
32874aea 2638 case ANSI('|', '*'):
2639 /* VT420 sequence DECSNLS
2640 * Set number of lines on screen
2641 * VT420 uses VGA like hardware and can support any size in
2642 * reasonable range (24..49 AIUI) with no default specified.
2643 */
2644 compatibility(VT420);
887035a5 2645 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
64734920 2646 if (!term->cfg.no_remote_resize)
a8327734 2647 request_resize(term->frontend, term->cols,
887035a5 2648 def(term->esc_args[0],
64734920 2649 term->cfg.height));
887035a5 2650 deselect(term);
32874aea 2651 }
2652 break;
2653 case ANSI('|', '$'):
2654 /* VT340/VT420 sequence DECSCPP
2655 * Set number of columns per page
2656 * Docs imply range is only 80 or 132, but I'll allow any.
2657 */
2658 compatibility(VT340TEXT);
887035a5 2659 if (term->esc_nargs <= 1) {
64734920 2660 if (!term->cfg.no_remote_resize)
a8327734 2661 request_resize(term->frontend,
2662 def(term->esc_args[0],
64734920 2663 term->cfg.width), term->rows);
887035a5 2664 deselect(term);
32874aea 2665 }
2666 break;
2667 case 'X': /* write N spaces w/o moving cursor */
2668 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2669 compatibility(ANSIMIN);
2670 {
887035a5 2671 int n = def(term->esc_args[0], 1);
32874aea 2672 pos cursplus;
887035a5 2673 unsigned long *p = term->cpos;
2674 if (n > term->cols - term->curs.x)
2675 n = term->cols - term->curs.x;
2676 cursplus = term->curs;
32874aea 2677 cursplus.x += n;
3c7366f8 2678 check_boundary(term, term->curs.x, term->curs.y);
2679 check_boundary(term, term->curs.x+n, term->curs.y);
887035a5 2680 check_selection(term, term->curs, cursplus);
32874aea 2681 while (n--)
887035a5 2682 *p++ = term->erase_char;
2683 term->seen_disp_event = TRUE;
32874aea 2684 }
2685 break;
2686 case 'x': /* report terminal characteristics */
2687 compatibility(VT100);
b9d7bcad 2688 if (term->ldisc) {
32874aea 2689 char buf[32];
887035a5 2690 int i = def(term->esc_args[0], 0);
32874aea 2691 if (i == 0 || i == 1) {
2692 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2693 buf[2] += i;
b9d7bcad 2694 ldisc_send(term->ldisc, buf, 20, 0);
32874aea 2695 }
2696 }
2697 break;
979f6987 2698 case 'Z': /* BackTab for xterm */
2699 compatibility(OTHER);
2700 {
887035a5 2701 int i = def(term->esc_args[0], 1);
2702 pos old_curs = term->curs;
979f6987 2703
887035a5 2704 for(;i>0 && term->curs.x>0; i--) {
979f6987 2705 do {
887035a5 2706 term->curs.x--;
2707 } while (term->curs.x >0 &&
2708 !term->tabs[term->curs.x]);
979f6987 2709 }
2710 fix_cpos;
887035a5 2711 check_selection(term, old_curs, term->curs);
979f6987 2712 }
2713 break;
32874aea 2714 case ANSI('L', '='):
2715 compatibility(OTHER);
887035a5 2716 term->use_bce = (term->esc_args[0] <= 0);
2717 term->erase_char = ERASE_CHAR;
2718 if (term->use_bce)
2719 term->erase_char = (' ' | ATTR_ASCII |
2720 (term->curr_attr &
2721 (ATTR_FGMASK | ATTR_BGMASK)));
32874aea 2722 break;
2723 case ANSI('E', '='):
2724 compatibility(OTHER);
887035a5 2725 term->blink_is_real = (term->esc_args[0] >= 1);
32874aea 2726 break;
2727 case ANSI('p', '"'):
887035a5 2728 /*
2729 * Allow the host to make this emulator a
2730 * 'perfect' VT102. This first appeared in
2731 * the VT220, but we do need to get back to
2732 * PuTTY mode so I won't check it.
e14a5a13 2733 *
4eeb7d09 2734 * The arg in 40..42,50 are a PuTTY extension.
32874aea 2735 * The 2nd arg, 8bit vs 7bit is not checked.
2736 *
887035a5 2737 * Setting VT102 mode should also change
2738 * the Fkeys to generate PF* codes as a
2739 * real VT102 has no Fkeys. The VT220 does
2740 * this, F11..F13 become ESC,BS,LF other
2741 * Fkeys send nothing.
32874aea 2742 *
2743 * Note ESC c will NOT change this!
374330e2 2744 */
32874aea 2745
887035a5 2746 switch (term->esc_args[0]) {
32874aea 2747 case 61:
887035a5 2748 term->compatibility_level &= ~TM_VTXXX;
2749 term->compatibility_level |= TM_VT102;
374330e2 2750 break;
32874aea 2751 case 62:
887035a5 2752 term->compatibility_level &= ~TM_VTXXX;
2753 term->compatibility_level |= TM_VT220;
32874aea 2754 break;
2755
2756 default:
887035a5 2757 if (term->esc_args[0] > 60 &&
2758 term->esc_args[0] < 70)
2759 term->compatibility_level |= TM_VTXXX;
32874aea 2760 break;
2761
2762 case 40:
887035a5 2763 term->compatibility_level &= TM_VTXXX;
374330e2 2764 break;
32874aea 2765 case 41:
887035a5 2766 term->compatibility_level = TM_PUTTY;
374330e2 2767 break;
32874aea 2768 case 42:
887035a5 2769 term->compatibility_level = TM_SCOANSI;
374330e2 2770 break;
32874aea 2771
2772 case ARG_DEFAULT:
887035a5 2773 term->compatibility_level = TM_PUTTY;
32874aea 2774 break;
2775 case 50:
2776 break;
2777 }
2778
2779 /* Change the response to CSI c */
887035a5 2780 if (term->esc_args[0] == 50) {
32874aea 2781 int i;
2782 char lbuf[64];
887035a5 2783 strcpy(term->id_string, "\033[?");
2784 for (i = 1; i < term->esc_nargs; i++) {
32874aea 2785 if (i != 1)
887035a5 2786 strcat(term->id_string, ";");
2787 sprintf(lbuf, "%d", term->esc_args[i]);
2788 strcat(term->id_string, lbuf);
32874aea 2789 }
887035a5 2790 strcat(term->id_string, "c");
32874aea 2791 }
2792#if 0
2793 /* Is this a good idea ?
2794 * Well we should do a soft reset at this point ...
2795 */
2796 if (!has_compat(VT420) && has_compat(VT100)) {
64734920 2797 if (!term->cfg.no_remote_resize) {
887035a5 2798 if (term->reset_132)
0d2086c5 2799 request_resize(132, 24);
2800 else
2801 request_resize(80, 24);
2802 }
374330e2 2803 }
32874aea 2804#endif
2805 break;
374330e2 2806 }
374330e2 2807 break;
32874aea 2808 case SEEN_OSC:
887035a5 2809 term->osc_w = FALSE;
32874aea 2810 switch (c) {
2811 case 'P': /* Linux palette sequence */
887035a5 2812 term->termstate = SEEN_OSC_P;
2813 term->osc_strlen = 0;
32874aea 2814 break;
2815 case 'R': /* Linux palette reset */
a8327734 2816 palette_reset(term->frontend);
887035a5 2817 term_invalidate(term);
2818 term->termstate = TOPLEVEL;
32874aea 2819 break;
2820 case 'W': /* word-set */
887035a5 2821 term->termstate = SEEN_OSC_W;
2822 term->osc_w = TRUE;
32874aea 2823 break;
2824 case '0':
2825 case '1':
2826 case '2':
2827 case '3':
2828 case '4':
2829 case '5':
2830 case '6':
2831 case '7':
2832 case '8':
2833 case '9':
887035a5 2834 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
32874aea 2835 break;
2836 case 'L':
2837 /*
2838 * Grotty hack to support xterm and DECterm title
2839 * sequences concurrently.
2840 */
887035a5 2841 if (term->esc_args[0] == 2) {
2842 term->esc_args[0] = 1;
32874aea 2843 break;
2844 }
2845 /* else fall through */
2846 default:
887035a5 2847 term->termstate = OSC_STRING;
2848 term->osc_strlen = 0;
e14a5a13 2849 }
2850 break;
32874aea 2851 case OSC_STRING:
2852 /*
2853 * This OSC stuff is EVIL. It takes just one character to get into
2854 * sysline mode and it's not initially obvious how to get out.
2855 * So I've added CR and LF as string aborts.
2856 * This shouldn't effect compatibility as I believe embedded
2857 * control characters are supposed to be interpreted (maybe?)
2858 * and they don't display anything useful anyway.
2859 *
2860 * -- RDB
e14a5a13 2861 */
92e23ad9 2862 if (c == '\012' || c == '\015') {
887035a5 2863 term->termstate = TOPLEVEL;
32874aea 2864 } else if (c == 0234 || c == '\007') {
2865 /*
2866 * These characters terminate the string; ST and BEL
2867 * terminate the sequence and trigger instant
2868 * processing of it, whereas ESC goes back to SEEN_ESC
2869 * mode unless it is followed by \, in which case it is
2870 * synonymous with ST in the first place.
2871 */
887035a5 2872 do_osc(term);
2873 term->termstate = TOPLEVEL;
32874aea 2874 } else if (c == '\033')
887035a5 2875 term->termstate = OSC_MAYBE_ST;
2876 else if (term->osc_strlen < OSC_STR_MAX)
2877 term->osc_string[term->osc_strlen++] = c;
374330e2 2878 break;
32874aea 2879 case SEEN_OSC_P:
374330e2 2880 {
887035a5 2881 int max = (term->osc_strlen == 0 ? 21 : 16);
32874aea 2882 int val;
2883 if (c >= '0' && c <= '9')
2884 val = c - '0';
2885 else if (c >= 'A' && c <= 'A' + max - 10)
2886 val = c - 'A' + 10;
2887 else if (c >= 'a' && c <= 'a' + max - 10)
2888 val = c - 'a' + 10;
2d466ffd 2889 else {
887035a5 2890 term->termstate = TOPLEVEL;
2d466ffd 2891 break;
2892 }
887035a5 2893 term->osc_string[term->osc_strlen++] = val;
2894 if (term->osc_strlen >= 7) {
a8327734 2895 palette_set(term->frontend, term->osc_string[0],
887035a5 2896 term->osc_string[1] * 16 + term->osc_string[2],
2897 term->osc_string[3] * 16 + term->osc_string[4],
2898 term->osc_string[5] * 16 + term->osc_string[6]);
2899 term_invalidate(term);
2900 term->termstate = TOPLEVEL;
374330e2 2901 }
2902 }
2903 break;
32874aea 2904 case SEEN_OSC_W:
2905 switch (c) {
2906 case '0':
2907 case '1':
2908 case '2':
2909 case '3':
2910 case '4':
2911 case '5':
2912 case '6':
2913 case '7':
2914 case '8':
2915 case '9':
887035a5 2916 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
32874aea 2917 break;
2918 default:
887035a5 2919 term->termstate = OSC_STRING;
2920 term->osc_strlen = 0;
ec55b220 2921 }
32874aea 2922 break;
32874aea 2923 case VT52_ESC:
887035a5 2924 term->termstate = TOPLEVEL;
2925 term->seen_disp_event = TRUE;
c9def1b8 2926 switch (c) {
32874aea 2927 case 'A':
887035a5 2928 move(term, term->curs.x, term->curs.y - 1, 1);
32874aea 2929 break;
2930 case 'B':
887035a5 2931 move(term, term->curs.x, term->curs.y + 1, 1);
32874aea 2932 break;
2933 case 'C':
887035a5 2934 move(term, term->curs.x + 1, term->curs.y, 1);
32874aea 2935 break;
2936 case 'D':
887035a5 2937 move(term, term->curs.x - 1, term->curs.y, 1);
32874aea 2938 break;
4eeb7d09 2939 /*
2940 * From the VT100 Manual
2941 * NOTE: The special graphics characters in the VT100
2942 * are different from those in the VT52
2943 *
2944 * From VT102 manual:
2945 * 137 _ Blank - Same
2946 * 140 ` Reserved - Humm.
2947 * 141 a Solid rectangle - Similar
2948 * 142 b 1/ - Top half of fraction for the
2949 * 143 c 3/ - subscript numbers below.
2950 * 144 d 5/
2951 * 145 e 7/
2952 * 146 f Degrees - Same
2953 * 147 g Plus or minus - Same
2954 * 150 h Right arrow
2955 * 151 i Ellipsis (dots)
2956 * 152 j Divide by
2957 * 153 k Down arrow
2958 * 154 l Bar at scan 0
2959 * 155 m Bar at scan 1
2960 * 156 n Bar at scan 2
2961 * 157 o Bar at scan 3 - Similar
2962 * 160 p Bar at scan 4 - Similar
2963 * 161 q Bar at scan 5 - Similar
2964 * 162 r Bar at scan 6 - Same
2965 * 163 s Bar at scan 7 - Similar
2966 * 164 t Subscript 0
2967 * 165 u Subscript 1
2968 * 166 v Subscript 2
2969 * 167 w Subscript 3
2970 * 170 x Subscript 4
2971 * 171 y Subscript 5
2972 * 172 z Subscript 6
2973 * 173 { Subscript 7
2974 * 174 | Subscript 8
2975 * 175 } Subscript 9
2976 * 176 ~ Paragraph
2977 *
2978 */
32874aea 2979 case 'F':
887035a5 2980 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
32874aea 2981 break;
2982 case 'G':
887035a5 2983 term->cset_attr[term->cset = 0] = ATTR_ASCII;
32874aea 2984 break;
2985 case 'H':
887035a5 2986 move(term, 0, 0, 0);
32874aea 2987 break;
2988 case 'I':
887035a5 2989 if (term->curs.y == 0)
2990 scroll(term, 0, term->rows - 1, -1, TRUE);
2991 else if (term->curs.y > 0)
2992 term->curs.y--;
32874aea 2993 fix_cpos;
887035a5 2994 term->wrapnext = FALSE;
32874aea 2995 break;
2996 case 'J':
887035a5 2997 erase_lots(term, FALSE, FALSE, TRUE);
2998 term->disptop = 0;
c9def1b8 2999 break;
32874aea 3000 case 'K':
887035a5 3001 erase_lots(term, TRUE, FALSE, TRUE);
32874aea 3002 break;
4eeb7d09 3003#if 0
32874aea 3004 case 'V':
3005 /* XXX Print cursor line */
3006 break;
3007 case 'W':
3008 /* XXX Start controller mode */
3009 break;
3010 case 'X':
3011 /* XXX Stop controller mode */
3012 break;
4eeb7d09 3013#endif
32874aea 3014 case 'Y':
887035a5 3015 term->termstate = VT52_Y1;
32874aea 3016 break;
3017 case 'Z':
b9d7bcad 3018 if (term->ldisc)
3019 ldisc_send(term->ldisc, "\033/Z", 3, 0);
32874aea 3020 break;
3021 case '=':
887035a5 3022 term->app_keypad_keys = TRUE;
32874aea 3023 break;
3024 case '>':
887035a5 3025 term->app_keypad_keys = FALSE;
32874aea 3026 break;
3027 case '<':
3028 /* XXX This should switch to VT100 mode not current or default
3029 * VT mode. But this will only have effect in a VT220+
3030 * emulation.
3031 */
887035a5 3032 term->vt52_mode = FALSE;
64734920 3033 term->blink_is_real = term->cfg.blinktext;
32874aea 3034 break;
4eeb7d09 3035#if 0
32874aea 3036 case '^':
3037 /* XXX Enter auto print mode */
3038 break;
3039 case '_':
3040 /* XXX Exit auto print mode */
3041 break;
3042 case ']':
3043 /* XXX Print screen */
3044 break;
4eeb7d09 3045#endif
3046
3047#ifdef VT52_PLUS
3048 case 'E':
3049 /* compatibility(ATARI) */
887035a5 3050 move(term, 0, 0, 0);
3051 erase_lots(term, FALSE, FALSE, TRUE);
3052 term->disptop = 0;
4eeb7d09 3053 break;
3054 case 'L':
3055 /* compatibility(ATARI) */
887035a5 3056 if (term->curs.y <= term->marg_b)
3057 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4eeb7d09 3058 break;
3059 case 'M':
3060 /* compatibility(ATARI) */
887035a5 3061 if (term->curs.y <= term->marg_b)
3062 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4eeb7d09 3063 break;
3064 case 'b':
3065 /* compatibility(ATARI) */
887035a5 3066 term->termstate = VT52_FG;
4eeb7d09 3067 break;
3068 case 'c':
3069 /* compatibility(ATARI) */
887035a5 3070 term->termstate = VT52_BG;
4eeb7d09 3071 break;
3072 case 'd':
3073 /* compatibility(ATARI) */
887035a5 3074 erase_lots(term, FALSE, TRUE, FALSE);
3075 term->disptop = 0;
4eeb7d09 3076 break;
3077 case 'e':
3078 /* compatibility(ATARI) */
887035a5 3079 term->cursor_on = TRUE;
4eeb7d09 3080 break;
3081 case 'f':
3082 /* compatibility(ATARI) */
887035a5 3083 term->cursor_on = FALSE;
4eeb7d09 3084 break;
3085 /* case 'j': Save cursor position - broken on ST */
3086 /* case 'k': Restore cursor position */
3087 case 'l':
3088 /* compatibility(ATARI) */
887035a5 3089 erase_lots(term, TRUE, TRUE, TRUE);
3090 term->curs.x = 0;
3091 term->wrapnext = FALSE;
4eeb7d09 3092 fix_cpos;
3093 break;
3094 case 'o':
3095 /* compatibility(ATARI) */
887035a5 3096 erase_lots(term, TRUE, TRUE, FALSE);
4eeb7d09 3097 break;
3098 case 'p':
3099 /* compatibility(ATARI) */
887035a5 3100 term->curr_attr |= ATTR_REVERSE;
4eeb7d09 3101 break;
3102 case 'q':
3103 /* compatibility(ATARI) */
887035a5 3104 term->curr_attr &= ~ATTR_REVERSE;
4eeb7d09 3105 break;
3106 case 'v': /* wrap Autowrap on - Wyse style */
3107 /* compatibility(ATARI) */
887035a5 3108 term->wrap = 1;
4eeb7d09 3109 break;
3110 case 'w': /* Autowrap off */
3111 /* compatibility(ATARI) */
887035a5 3112 term->wrap = 0;
4eeb7d09 3113 break;
3114
3115 case 'R':
3116 /* compatibility(OTHER) */
887035a5 3117 term->vt52_bold = FALSE;
3118 term->curr_attr = ATTR_DEFAULT;
3119 if (term->use_bce)
3120 term->erase_char = (' ' | ATTR_ASCII |
3121 (term->curr_attr &
3122 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 3123 break;
3124 case 'S':
3125 /* compatibility(VI50) */
887035a5 3126 term->curr_attr |= ATTR_UNDER;
4eeb7d09 3127 break;
3128 case 'W':
3129 /* compatibility(VI50) */
887035a5 3130 term->curr_attr &= ~ATTR_UNDER;
4eeb7d09 3131 break;
3132 case 'U':
3133 /* compatibility(VI50) */
887035a5 3134 term->vt52_bold = TRUE;
3135 term->curr_attr |= ATTR_BOLD;
4eeb7d09 3136 break;
3137 case 'T':
3138 /* compatibility(VI50) */
887035a5 3139 term->vt52_bold = FALSE;
3140 term->curr_attr &= ~ATTR_BOLD;
4eeb7d09 3141 break;
3142#endif
c9def1b8 3143 }
e14a5a13 3144 break;
32874aea 3145 case VT52_Y1:
887035a5 3146 term->termstate = VT52_Y2;
3147 move(term, term->curs.x, c - ' ', 0);
e14a5a13 3148 break;
32874aea 3149 case VT52_Y2:
887035a5 3150 term->termstate = TOPLEVEL;
3151 move(term, c - ' ', term->curs.y, 0);
e14a5a13 3152 break;
4eeb7d09 3153
3154#ifdef VT52_PLUS
3155 case VT52_FG:
887035a5 3156 term->termstate = TOPLEVEL;
3157 term->curr_attr &= ~ATTR_FGMASK;
3158 term->curr_attr &= ~ATTR_BOLD;
3159 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
3160 if ((c & 0x8) || term->vt52_bold)
3161 term->curr_attr |= ATTR_BOLD;
3162
3163 if (term->use_bce)
3164 term->erase_char = (' ' | ATTR_ASCII |
3165 (term->curr_attr &
3166 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 3167 break;
3168 case VT52_BG:
887035a5 3169 term->termstate = TOPLEVEL;
3170 term->curr_attr &= ~ATTR_BGMASK;
3171 term->curr_attr &= ~ATTR_BLINK;
3172 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
4eeb7d09 3173
3174 /* Note: bold background */
3175 if (c & 0x8)
887035a5 3176 term->curr_attr |= ATTR_BLINK;
4eeb7d09 3177
887035a5 3178 if (term->use_bce)
3179 term->erase_char = (' ' | ATTR_ASCII |
3180 (term->curr_attr &
3181 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 3182 break;
3183#endif
2d466ffd 3184 default: break; /* placate gcc warning about enum use */
e14a5a13 3185 }
887035a5 3186 if (term->selstate != NO_SELECTION) {
3187 pos cursplus = term->curs;
4facdf84 3188 incpos(cursplus);
887035a5 3189 check_selection(term, term->curs, cursplus);
4facdf84 3190 }
374330e2 3191 }
b44b307a 3192
887035a5 3193 term_print_flush(term);
374330e2 3194}
3195
4eeb7d09 3196#if 0
374330e2 3197/*
3198 * Compare two lines to determine whether they are sufficiently
3199 * alike to scroll-optimise one to the other. Return the degree of
3200 * similarity.
3201 */
887035a5 3202static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
32874aea 3203{
374330e2 3204 int i, n;
3205
887035a5 3206 for (i = n = 0; i < term->cols; i++)
374330e2 3207 n += (*a++ == *b++);
3208 return n;
3209}
4eeb7d09 3210#endif
374330e2 3211
3212/*
3213 * Given a context, update the window. Out of paranoia, we don't
3214 * allow WM_PAINT responses to do scrolling optimisations.
3215 */
887035a5 3216static void do_paint(Terminal *term, Context ctx, int may_optimise)
32874aea 3217{
3c7366f8 3218 int i, j, our_curs_y, our_curs_x;
4eeb7d09 3219 unsigned long rv, cursor;
4facdf84 3220 pos scrpos;
374330e2 3221 char ch[1024];
4eeb7d09 3222 long cursor_background = ERASE_CHAR;
286c6b86 3223 unsigned long ticks;
341eb978 3224#ifdef OPTIMISE_SCROLL
3225 struct scrollregion *sr;
3226#endif /* OPTIMISE_SCROLL */
374330e2 3227
156686ef 3228 /*
3229 * Check the visual bell state.
3230 */
887035a5 3231 if (term->in_vbell) {
f7f27309 3232 ticks = GETTICKCOUNT();
887035a5 3233 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
3234 term->in_vbell = FALSE;
286c6b86 3235 }
156686ef 3236
887035a5 3237 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4eeb7d09 3238
156686ef 3239 /* Depends on:
3240 * screen array, disptop, scrtop,
3241 * selection, rv,
3242 * cfg.blinkpc, blink_is_real, tblinker,
4eeb7d09 3243 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
156686ef 3244 */
4eeb7d09 3245
3246 /* Has the cursor position or type changed ? */
887035a5 3247 if (term->cursor_on) {
3248 if (term->has_focus) {
64734920 3249 if (term->blinker || !term->cfg.blink_cur)
4eeb7d09 3250 cursor = TATTR_ACTCURS;
32874aea 3251 else
3252 cursor = 0;
3253 } else
4eeb7d09 3254 cursor = TATTR_PASCURS;
887035a5 3255 if (term->wrapnext)
4eeb7d09 3256 cursor |= TATTR_RIGHTCURS;
32874aea 3257 } else
156686ef 3258 cursor = 0;
887035a5 3259 our_curs_y = term->curs.y - term->disptop;
3c7366f8 3260 {
3261 /*
3262 * Adjust the cursor position in the case where it's
3263 * resting on the right-hand half of a CJK wide character.
3264 * xterm's behaviour here, which seems adequate to me, is
3265 * to display the cursor covering the _whole_ character,
3266 * exactly as if it were one space to the left.
3267 */
3268 unsigned long *ldata = lineptr(term->curs.y);
3269 our_curs_x = term->curs.x;
3270 if (our_curs_x > 0 &&
3271 (ldata[our_curs_x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3272 our_curs_x--;
3273 }
887035a5 3274
3275 if (term->dispcurs && (term->curstype != cursor ||
3276 term->dispcurs !=
3277 term->disptext + our_curs_y * (term->cols + 1) +
3c7366f8 3278 our_curs_x)) {
887035a5 3279 if (term->dispcurs > term->disptext &&
3c7366f8 3280 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
887035a5 3281 term->dispcurs[-1] |= ATTR_INVALID;
3282 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3283 term->dispcurs[1] |= ATTR_INVALID;
3284 *term->dispcurs |= ATTR_INVALID;
3285 term->curstype = 0;
4eeb7d09 3286 }
887035a5 3287 term->dispcurs = NULL;
4eeb7d09 3288
341eb978 3289#ifdef OPTIMISE_SCROLL
3290 /* Do scrolls */
3291 sr = term->scrollhead;
3292 while (sr) {
3293 struct scrollregion *next = sr->next;
3294 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
3295 sfree(sr);
3296 sr = next;
3297 }
3298 term->scrollhead = term->scrolltail = NULL;
3299#endif /* OPTIMISE_SCROLL */
3300
4eeb7d09 3301 /* The normal screen data */
887035a5 3302 for (i = 0; i < term->rows; i++) {
4facdf84 3303 unsigned long *ldata;
3304 int lattr;
6908fed7 3305 int idx, dirty_line, dirty_run, selected;
4eeb7d09 3306 unsigned long attr = 0;
3307 int updated_line = 0;
3308 int start = 0;
3309 int ccount = 0;
3310 int last_run_dirty = 0;
3311
887035a5 3312 scrpos.y = i + term->disptop;
4facdf84 3313 ldata = lineptr(scrpos.y);
887035a5 3314 lattr = (ldata[term->cols] & LATTR_MODE);
4eeb7d09 3315
887035a5 3316 idx = i * (term->cols + 1);
3317 dirty_run = dirty_line = (ldata[term->cols] !=
3318 term->disptext[idx + term->cols]);
3319 term->disptext[idx + term->cols] = ldata[term->cols];
4eeb7d09 3320
887035a5 3321 for (j = 0; j < term->cols; j++, idx++) {
4eeb7d09 3322 unsigned long tattr, tchar;
3323 unsigned long *d = ldata + j;
3324 int break_run;
4facdf84 3325 scrpos.x = j;
32874aea 3326
4eeb7d09 3327 tchar = (*d & (CHAR_MASK | CSET_MASK));
3328 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
3329 switch (tchar & CSET_MASK) {
3330 case ATTR_ASCII:
21d2b241 3331 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4eeb7d09 3332 break;
3333 case ATTR_LINEDRW:
21d2b241 3334 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4eeb7d09 3335 break;
d3cb5465 3336 case ATTR_SCOACS:
21d2b241 3337 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
d3cb5465 3338 break;
4eeb7d09 3339 }
3340 tattr |= (tchar & CSET_MASK);
3341 tchar &= CHAR_MASK;
5a73255e 3342 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3343 tattr |= ATTR_WIDE;
4eeb7d09 3344
3345 /* Video reversing things */
f278d6f8 3346 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3347 if (term->seltype == LEXICOGRAPHIC)
3348 selected = (posle(term->selstart, scrpos) &&
3349 poslt(scrpos, term->selend));
3350 else
3351 selected = (posPle(term->selstart, scrpos) &&
3352 posPlt(scrpos, term->selend));
3353 } else
3354 selected = FALSE;
4eeb7d09 3355 tattr = (tattr ^ rv
6908fed7 3356 ^ (selected ? ATTR_REVERSE : 0));
4eeb7d09 3357
3358 /* 'Real' blinking ? */
887035a5 3359 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3360 if (term->has_focus && term->tblinker) {
fc6f0fc2 3361 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
c9def1b8 3362 }
4eeb7d09 3363 tattr &= ~ATTR_BLINK;
c9def1b8 3364 }
374330e2 3365
5a73255e 3366 /*
3367 * Check the font we'll _probably_ be using to see if
3368 * the character is wide when we don't want it to be.
3369 */
887035a5 3370 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
5a73255e 3371 if ((tattr & ATTR_WIDE) == 0 &&
2102eb8a 3372 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
5a73255e 3373 tattr |= ATTR_NARROW;
887035a5 3374 } else if (term->disptext[idx]&ATTR_NARROW)
5a73255e 3375 tattr |= ATTR_NARROW;
3376
4eeb7d09 3377 /* Cursor here ? Save the 'background' */
3c7366f8 3378 if (i == our_curs_y && j == our_curs_x) {
4eeb7d09 3379 cursor_background = tattr | tchar;
887035a5 3380 term->dispcurs = term->disptext + idx;
4eeb7d09 3381 }
374330e2 3382
887035a5 3383 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
4eeb7d09 3384 dirty_line = TRUE;
3385
2647b103 3386 break_run = (((tattr ^ attr) & term->attr_mask) ||
3387 j - start >= sizeof(ch));
4eeb7d09 3388
3389 /* Special hack for VT100 Linedraw glyphs */
3390 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3391 && tchar <= 0xBD) break_run = TRUE;
3392
21d2b241 3393 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
887035a5 3394 if ((tchar | tattr) == term->disptext[idx])
4eeb7d09 3395 break_run = TRUE;
3396 else if (!dirty_run && ccount == 1)
3397 break_run = TRUE;
374330e2 3398 }
4eeb7d09 3399
3400 if (break_run) {
3401 if ((dirty_run || last_run_dirty) && ccount > 0) {
3402 do_text(ctx, start, i, ch, ccount, attr, lattr);
3403 updated_line = 1;
3404 }
3405 start = j;
3406 ccount = 0;
3407 attr = tattr;
21d2b241 3408 if (term->ucsdata->dbcs_screenfont)
4eeb7d09 3409 last_run_dirty = dirty_run;
3410 dirty_run = dirty_line;
3411 }
3412
887035a5 3413 if ((tchar | tattr) != term->disptext[idx])
4eeb7d09 3414 dirty_run = TRUE;
3415 ch[ccount++] = (char) tchar;
887035a5 3416 term->disptext[idx] = tchar | tattr;
4eeb7d09 3417
3418 /* If it's a wide char step along to the next one. */
3419 if (tattr & ATTR_WIDE) {
887035a5 3420 if (++j < term->cols) {
4eeb7d09 3421 idx++;
3422 d++;
3c7366f8 3423 /*
3424 * By construction above, the cursor should not
3425 * be on the right-hand half of this character.
3426 * Ever.
3427 */
3428 assert(!(i == our_curs_y && j == our_curs_x));
887035a5 3429 if (term->disptext[idx] != *d)
4eeb7d09 3430 dirty_run = TRUE;
887035a5 3431 term->disptext[idx] = *d;
374330e2 3432 }
374330e2 3433 }
4eeb7d09 3434 }
3435 if (dirty_run && ccount > 0) {
3436 do_text(ctx, start, i, ch, ccount, attr, lattr);
3437 updated_line = 1;
3438 }
3439
3440 /* Cursor on this line ? (and changed) */
887035a5 3441 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
4eeb7d09 3442 ch[0] = (char) (cursor_background & CHAR_MASK);
3443 attr = (cursor_background & ATTR_MASK) | cursor;
3c7366f8 3444 do_cursor(ctx, our_curs_x, i, ch, 1, attr, lattr);
887035a5 3445 term->curstype = cursor;
374330e2 3446 }
3447 }
3448}
3449
3450/*
e14a5a13 3451 * Flick the switch that says if blinking things should be shown or hidden.
3452 */
3453
887035a5 3454void term_blink(Terminal *term, int flg)
32874aea 3455{
e14a5a13 3456 long now, blink_diff;
3457
f7f27309 3458 now = GETTICKCOUNT();
887035a5 3459 blink_diff = now - term->last_tblink;
c9def1b8 3460
1d3989ed 3461 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3462 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
887035a5 3463 term->last_tblink = now;
3464 term->tblinker = !term->tblinker;
c9def1b8 3465 }
3466
e14a5a13 3467 if (flg) {
887035a5 3468 term->blinker = 1;
3469 term->last_blink = now;
e14a5a13 3470 return;
32874aea 3471 }
e14a5a13 3472
887035a5 3473 blink_diff = now - term->last_blink;
e14a5a13 3474
f7f27309 3475 /* Make sure the cursor blinks no faster than system blink rate */
3476 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
32874aea 3477 return;
3478
887035a5 3479 term->last_blink = now;
3480 term->blinker = !term->blinker;
e14a5a13 3481}
3482
3483/*
374330e2 3484 * Invalidate the whole screen so it will be repainted in full.
3485 */
887035a5 3486void term_invalidate(Terminal *term)
32874aea 3487{
374330e2 3488 int i;
3489
887035a5 3490 for (i = 0; i < term->rows * (term->cols + 1); i++)
3491 term->disptext[i] = ATTR_INVALID;
374330e2 3492}
3493
3494/*
3495 * Paint the window in response to a WM_PAINT message.
3496 */
887035a5 3497void term_paint(Terminal *term, Context ctx,
c1b55581 3498 int left, int top, int right, int bottom, int immediately)
32874aea 3499{
5a73255e 3500 int i, j;
3501 if (left < 0) left = 0;
3502 if (top < 0) top = 0;
887035a5 3503 if (right >= term->cols) right = term->cols-1;
3504 if (bottom >= term->rows) bottom = term->rows-1;
3505
3506 for (i = top; i <= bottom && i < term->rows; i++) {
3507 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3508 LATTR_MODE) == LATTR_NORM)
3509 for (j = left; j <= right && j < term->cols; j++)
3510 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
c9def1b8 3511 else
887035a5 3512 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3513 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
c9def1b8 3514 }
374330e2 3515
e14a5a13 3516 /* This should happen soon enough, also for some reason it sometimes
3517 * fails to actually do anything when re-sizing ... painting the wrong
3518 * window perhaps ?
32874aea 3519 */
c1b55581 3520 if (immediately)
887035a5 3521 do_paint (term, ctx, FALSE);
374330e2 3522}
3523
3524/*
3525 * Attempt to scroll the scrollback. The second parameter gives the
3526 * position we want to scroll to; the first is +1 to denote that
3527 * this position is relative to the beginning of the scrollback, -1
3528 * to denote it is relative to the end, and 0 to denote that it is
3529 * relative to the current position.
3530 */
887035a5 3531void term_scroll(Terminal *term, int rel, int where)
32874aea 3532{
876e5d5e 3533 int sbtop = -sblines(term);
37d2a505 3534#ifdef OPTIMISE_SCROLL
3535 int olddisptop = term->disptop;
3536 int shift;
3537#endif /* OPTIMISE_SCROLL */
887035a5 3538
3539 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3540 if (term->disptop < sbtop)
3541 term->disptop = sbtop;
3542 if (term->disptop > 0)
3543 term->disptop = 0;
3544 update_sbar(term);
37d2a505 3545#ifdef OPTIMISE_SCROLL
3546 shift = (term->disptop - olddisptop);
3547 if (shift < term->rows && shift > -term->rows)
3548 scroll_display(term, 0, term->rows - 1, shift);
3549#endif /* OPTIMISE_SCROLL */
887035a5 3550 term_update(term);
374330e2 3551}
3552
887035a5 3553static void clipme(Terminal *term, pos top, pos bottom, int rect)
32874aea 3554{
4eeb7d09 3555 wchar_t *workbuf;
3556 wchar_t *wbptr; /* where next char goes within workbuf */
6908fed7 3557 int old_top_x;
32874aea 3558 int wblen = 0; /* workbuf len */
3559 int buflen; /* amount of memory allocated to workbuf */
bc1235d4 3560
4eeb7d09 3561 buflen = 5120; /* Default size */
3562 workbuf = smalloc(buflen * sizeof(wchar_t));
3563 wbptr = workbuf; /* start filling here */
6908fed7 3564 old_top_x = top.x; /* needed for rect==1 */
bc1235d4 3565
4facdf84 3566 while (poslt(top, bottom)) {
bc1235d4 3567 int nl = FALSE;
4facdf84 3568 unsigned long *ldata = lineptr(top.y);
260f3dec 3569 pos nlpos;
4facdf84 3570
6908fed7 3571 /*
3572 * nlpos will point at the maximum position on this line we
3573 * should copy up to. So we start it at the end of the
3574 * line...
3575 */
4facdf84 3576 nlpos.y = top.y;
887035a5 3577 nlpos.x = term->cols;
bc1235d4 3578
6908fed7 3579 /*
3580 * ... move it backwards if there's unused space at the end
3581 * of the line (and also set `nl' if this is the case,
3582 * because in normal selection mode this means we need a
3583 * newline at the end)...
3584 */
887035a5 3585 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
4eeb7d09 3586 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3587 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3588 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3589 && poslt(top, nlpos))
3590 decpos(nlpos);
4facdf84 3591 if (poslt(nlpos, bottom))
bc1235d4 3592 nl = TRUE;
3c7366f8 3593 } else if (ldata[term->cols] & LATTR_WRAPPED2) {
3594 /* Ignore the last char on the line in a WRAPPED2 line. */
3595 decpos(nlpos);
bc1235d4 3596 }
6908fed7 3597
3598 /*
3599 * ... and then clip it to the terminal x coordinate if
3600 * we're doing rectangular selection. (In this case we
3601 * still did the above, so that copying e.g. the right-hand
3602 * column from a table doesn't fill with spaces on the
3603 * right.)
3604 */
3605 if (rect) {
3606 if (nlpos.x > bottom.x)
3607 nlpos.x = bottom.x;
3608 nl = (top.y < bottom.y);
3609 }
3610
4facdf84 3611 while (poslt(top, bottom) && poslt(top, nlpos)) {
4eeb7d09 3612#if 0
3613 char cbuf[16], *p;
3614 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3615#else
3616 wchar_t cbuf[16], *p;
3617 int uc = (ldata[top.x] & 0xFFFF);
3618 int set, c;
3619
3620 if (uc == UCSWIDE) {
3621 top.x++;
3622 continue;
3623 }
3624
3625 switch (uc & CSET_MASK) {
3626 case ATTR_LINEDRW:
64734920 3627 if (!term->cfg.rawcnp) {
21d2b241 3628 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4eeb7d09 3629 break;
32874aea 3630 }
4eeb7d09 3631 case ATTR_ASCII:
21d2b241 3632 uc = term->ucsdata->unitab_line[uc & 0xFF];
4eeb7d09 3633 break;
d3cb5465 3634 case ATTR_SCOACS:
21d2b241 3635 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
d3cb5465 3636 break;
d3a22f79 3637 }
4eeb7d09 3638 switch (uc & CSET_MASK) {
3639 case ATTR_ACP:
21d2b241 3640 uc = term->ucsdata->unitab_font[uc & 0xFF];
4eeb7d09 3641 break;
3642 case ATTR_OEMCP:
21d2b241 3643 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4eeb7d09 3644 break;
3645 }
3646
3647 set = (uc & CSET_MASK);
3648 c = (uc & CHAR_MASK);
3649 cbuf[0] = uc;
3650 cbuf[1] = 0;
3651
3652 if (DIRECT_FONT(uc)) {
3653 if (c >= ' ' && c != 0x7F) {
e63ae276 3654 char buf[4];
4eeb7d09 3655 WCHAR wbuf[4];
3656 int rv;
21d2b241 3657 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
4eeb7d09 3658 buf[0] = c;
7b966c9b 3659 buf[1] = (char) (0xFF & ldata[top.x + 1]);
21d2b241 3660 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
4eeb7d09 3661 top.x++;
3662 } else {
3663 buf[0] = c;
21d2b241 3664 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
4eeb7d09 3665 }
bc1235d4 3666
4eeb7d09 3667 if (rv > 0) {
3668 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3669 cbuf[rv] = 0;
d3a22f79 3670 }
d3a22f79 3671 }
4eeb7d09 3672 }
3673#endif
3674
3675 for (p = cbuf; *p; p++) {
3676 /* Enough overhead for trailing NL and nul */
3677 if (wblen >= buflen - 16) {
3678 workbuf =
3679 srealloc(workbuf,
3680 sizeof(wchar_t) * (buflen += 100));
3681 wbptr = workbuf + wblen;
3682 }
3683 wblen++;
3684 *wbptr++ = *p;
bc1235d4 3685 }
4facdf84 3686 top.x++;
bc1235d4 3687 }
3688 if (nl) {
3689 int i;
4eeb7d09 3690 for (i = 0; i < sel_nl_sz; i++) {
32874aea 3691 wblen++;
bc1235d4 3692 *wbptr++ = sel_nl[i];
3693 }
3694 }
4facdf84 3695 top.y++;
6908fed7 3696 top.x = rect ? old_top_x : 0;
bc1235d4 3697 }
e6346999 3698#if SELECTION_NUL_TERMINATED
4eeb7d09 3699 wblen++;
3700 *wbptr++ = 0;
e6346999 3701#endif
a8327734 3702 write_clip(term->frontend, workbuf, wblen, FALSE); /* transfer to clipbd */
32874aea 3703 if (buflen > 0) /* indicates we allocated this buffer */
bc1235d4 3704 sfree(workbuf);
bc1235d4 3705}
4eeb7d09 3706
887035a5 3707void term_copyall(Terminal *term)
32874aea 3708{
4facdf84 3709 pos top;
876e5d5e 3710 top.y = -sblines(term);
4facdf84 3711 top.x = 0;
887035a5 3712 clipme(term, top, term->curs, 0);
4eeb7d09 3713}
3714
3715/*
887035a5 3716 * The wordness array is mainly for deciding the disposition of the
3717 * US-ASCII characters.
4eeb7d09 3718 */
887035a5 3719static int wordtype(Terminal *term, int uc)
4eeb7d09 3720{
b9d7bcad 3721 struct ucsword {
4eeb7d09 3722 int start, end, ctype;
b9d7bcad 3723 };
3724 static const struct ucsword ucs_words[] = {
4eeb7d09 3725 {
3726 128, 160, 0}, {
3727 161, 191, 1}, {
3728 215, 215, 1}, {
3729 247, 247, 1}, {
3730 0x037e, 0x037e, 1}, /* Greek question mark */
3731 {
3732 0x0387, 0x0387, 1}, /* Greek ano teleia */
3733 {
3734 0x055a, 0x055f, 1}, /* Armenian punctuation */
3735 {
3736 0x0589, 0x0589, 1}, /* Armenian full stop */
3737 {
3738 0x0700, 0x070d, 1}, /* Syriac punctuation */
3739 {
3740 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3741 {
3742 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3743 {
3744 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3745 {
3746 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3747 {
3748 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3749 {
3750 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3751 {
3752 0x2000, 0x200a, 0}, /* Various spaces */
3753 {
3754 0x2070, 0x207f, 2}, /* superscript */
3755 {
3756 0x2080, 0x208f, 2}, /* subscript */
3757 {
3758 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3759 {
3760 0x3000, 0x3000, 0}, /* ideographic space */
3761 {
3762 0x3001, 0x3020, 1}, /* ideographic punctuation */
3763 {
3764 0x303f, 0x309f, 3}, /* Hiragana */
3765 {
3766 0x30a0, 0x30ff, 3}, /* Katakana */
3767 {
3768 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3769 {
3770 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3771 {
3772 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3773 {
3774 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3775 {
3776 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3777 {
3778 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3779 {
3780 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3781 {
3782 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3783 {
3784 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3785 {
3786 0, 0, 0}
3787 };
b9d7bcad 3788 const struct ucsword *wptr;
4eeb7d09 3789
3790 uc &= (CSET_MASK | CHAR_MASK);
3791
3792 switch (uc & CSET_MASK) {
3793 case ATTR_LINEDRW:
21d2b241 3794 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4eeb7d09 3795 break;
3796 case ATTR_ASCII:
21d2b241 3797 uc = term->ucsdata->unitab_line[uc & 0xFF];
4eeb7d09 3798 break;
d3cb5465 3799 case ATTR_SCOACS:
21d2b241 3800 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
d3cb5465 3801 break;
4eeb7d09 3802 }
3803 switch (uc & CSET_MASK) {
3804 case ATTR_ACP:
21d2b241 3805 uc = term->ucsdata->unitab_font[uc & 0xFF];
4eeb7d09 3806 break;
3807 case ATTR_OEMCP:
21d2b241 3808 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4eeb7d09 3809 break;
3810 }
3811
5a73255e 3812 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3813 * fail as there's such a thing as a double width space. :-(
3814 */
21d2b241 3815 if (term->ucsdata->dbcs_screenfont &&
3816 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5a73255e 3817 return (uc != ' ');
3818
4eeb7d09 3819 if (uc < 0x80)
887035a5 3820 return term->wordness[uc];
4eeb7d09 3821
3822 for (wptr = ucs_words; wptr->start; wptr++) {
3823 if (uc >= wptr->start && uc <= wptr->end)
3824 return wptr->ctype;
3825 }
3826
3827 return 2;
bc1235d4 3828}
3829
374330e2 3830/*
3831 * Spread the selection outwards according to the selection mode.
3832 */
887035a5 3833static pos sel_spread_half(Terminal *term, pos p, int dir)
32874aea 3834{
4facdf84 3835 unsigned long *ldata;
374330e2 3836 short wvalue;
876e5d5e 3837 int topy = -sblines(term);
374330e2 3838
4facdf84 3839 ldata = lineptr(p.y);
374330e2 3840
887035a5 3841 switch (term->selmode) {
374330e2 3842 case SM_CHAR:
3843 /*
3844 * In this mode, every character is a separate unit, except
3845 * for runs of spaces at the end of a non-wrapping line.
3846 */
887035a5 3847 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3848 unsigned long *q = ldata + term->cols;
4facdf84 3849 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
374330e2 3850 q--;
887035a5 3851 if (q == ldata + term->cols)
374330e2 3852 q--;
32874aea 3853 if (p.x >= q - ldata)
887035a5 3854 p.x = (dir == -1 ? q - ldata : term->cols - 1);
374330e2 3855 }
3856 break;
3857 case SM_WORD:
3858 /*
3859 * In this mode, the units are maximal runs of characters
3860 * whose `wordness' has the same value.
3861 */
3c7366f8 3862 wvalue = wordtype(term, UCSGET(ldata, p.x));
374330e2 3863 if (dir == +1) {
50ab4088 3864 while (1) {
3c7366f8 3865 int maxcols = (ldata[term->cols] & LATTR_WRAPPED2 ?
3866 term->cols-1 : term->cols);
3867 if (p.x < maxcols-1) {
3868 if (wordtype(term, UCSGET(ldata, p.x + 1)) == wvalue)
50ab4088 3869 p.x++;
3870 else
3871 break;
3872 } else {
887035a5 3873 if (ldata[term->cols] & LATTR_WRAPPED) {
50ab4088 3874 unsigned long *ldata2;
3875 ldata2 = lineptr(p.y+1);
3c7366f8 3876 if (wordtype(term, UCSGET(ldata2, 0)) == wvalue) {
50ab4088 3877 p.x = 0;
3878 p.y++;
3879 ldata = ldata2;
3880 } else
3881 break;
3882 } else
3883 break;
3884 }
3885 }
374330e2 3886 } else {
50ab4088 3887 while (1) {
3888 if (p.x > 0) {
3c7366f8 3889 if (wordtype(term, UCSGET(ldata, p.x - 1)) == wvalue)
50ab4088 3890 p.x--;
3891 else
3892 break;
3893 } else {
3894 unsigned long *ldata2;
3c7366f8 3895 int maxcols;
50ab4088 3896 if (p.y <= topy)
3897 break;
3898 ldata2 = lineptr(p.y-1);
3c7366f8 3899 maxcols = (ldata2[term->cols] & LATTR_WRAPPED2 ?
3900 term->cols-1 : term->cols);
3901 if (ldata2[term->cols] & LATTR_WRAPPED) {
3902 if (wordtype(term, UCSGET(ldata2, maxcols-1))
3903 == wvalue) {
3904 p.x = maxcols-1;
3905 p.y--;
3906 ldata = ldata2;
3907 } else
3908 break;
50ab4088 3909 } else
3910 break;
3911 }
3912 }
374330e2 3913 }
3914 break;
3915 case SM_LINE:
3916 /*
3917 * In this mode, every line is a unit.
3918 */
887035a5 3919 p.x = (dir == -1 ? 0 : term->cols - 1);
374330e2 3920 break;
3921 }
3922 return p;
3923}
3924
887035a5 3925static void sel_spread(Terminal *term)
32874aea 3926{
887035a5 3927 if (term->seltype == LEXICOGRAPHIC) {
3928 term->selstart = sel_spread_half(term, term->selstart, -1);
3929 decpos(term->selend);
3930 term->selend = sel_spread_half(term, term->selend, +1);
3931 incpos(term->selend);
6908fed7 3932 }
374330e2 3933}
3934
887035a5 3935void term_do_paste(Terminal *term)
568dd02f 3936{
3937 wchar_t *data;
3938 int len;
3939
a8327734 3940 get_clip(term->frontend, &data, &len);
2cb50250 3941 if (data && len > 0) {
568dd02f 3942 wchar_t *p, *q;
3943
887035a5 3944 term_seen_key_event(term); /* pasted data counts */
2cb50250 3945
887035a5 3946 if (term->paste_buffer)
3947 sfree(term->paste_buffer);
3948 term->paste_pos = term->paste_hold = term->paste_len = 0;
3949 term->paste_buffer = smalloc(len * sizeof(wchar_t));
568dd02f 3950
3951 p = q = data;
3952 while (p < data + len) {
3953 while (p < data + len &&
3954 !(p <= data + len - sel_nl_sz &&
3955 !memcmp(p, sel_nl, sizeof(sel_nl))))
3956 p++;
3957
3958 {
3959 int i;
3960 for (i = 0; i < p - q; i++) {
887035a5 3961 term->paste_buffer[term->paste_len++] = q[i];
568dd02f 3962 }
3963 }
3964
3965 if (p <= data + len - sel_nl_sz &&
3966 !memcmp(p, sel_nl, sizeof(sel_nl))) {
92e23ad9 3967 term->paste_buffer[term->paste_len++] = '\015';
568dd02f 3968 p += sel_nl_sz;
3969 }
3970 q = p;
3971 }
3972
3973 /* Assume a small paste will be OK in one go. */
887035a5 3974 if (term->paste_len < 256) {
b9d7bcad 3975 if (term->ldisc)
3976 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
887035a5 3977 if (term->paste_buffer)
3978 sfree(term->paste_buffer);
3979 term->paste_buffer = 0;
3980 term->paste_pos = term->paste_hold = term->paste_len = 0;
568dd02f 3981 }
3982 }
a8327734 3983 get_clip(term->frontend, NULL, NULL);
568dd02f 3984}
3985
fc5b0934 3986void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
3987 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
32874aea 3988{
4facdf84 3989 pos selpoint;
3990 unsigned long *ldata;
887035a5 3991 int raw_mouse = (term->xterm_mouse &&
64734920 3992 !term->cfg.no_mouse_rep &&
3993 !(term->cfg.mouse_override && shift));
6908fed7 3994 int default_seltype;
32874aea 3995
fff61f25 3996 if (y < 0) {
32874aea 3997 y = 0;
fff61f25 3998 if (a == MA_DRAG && !raw_mouse)
887035a5 3999 term_scroll(term, 0, -1);
fff61f25 4000 }
887035a5 4001 if (y >= term->rows) {
4002 y = term->rows - 1;
fff61f25 4003 if (a == MA_DRAG && !raw_mouse)
887035a5 4004 term_scroll(term, 0, +1);
fff61f25 4005 }
32874aea 4006 if (x < 0) {
4007 if (y > 0) {
887035a5 4008 x = term->cols - 1;
32874aea 4009 y--;
4010 } else
4011 x = 0;
094ed2a6 4012 }
887035a5 4013 if (x >= term->cols)
4014 x = term->cols - 1;
37508af4 4015
887035a5 4016 selpoint.y = y + term->disptop;
4facdf84 4017 selpoint.x = x;
4018 ldata = lineptr(selpoint.y);
887035a5 4019 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
4facdf84 4020 selpoint.x /= 2;
374330e2 4021
fff61f25 4022 if (raw_mouse) {
01c034ad 4023 int encstate = 0, r, c;
4024 char abuf[16];
01c034ad 4025
b9d7bcad 4026 if (term->ldisc) {
4027
fc5b0934 4028 switch (braw) {
b9d7bcad 4029 case MBT_LEFT:
4030 encstate = 0x20; /* left button down */
4031 break;
4032 case MBT_MIDDLE:
4033 encstate = 0x21;
4034 break;
4035 case MBT_RIGHT:
4036 encstate = 0x22;
4037 break;
4038 case MBT_WHEEL_UP:
4039 encstate = 0x60;
4040 break;
4041 case MBT_WHEEL_DOWN:
4042 encstate = 0x61;
4043 break;
4044 default: break; /* placate gcc warning about enum use */
4045 }
4046 switch (a) {
4047 case MA_DRAG:
4048 if (term->xterm_mouse == 1)
4049 return;
4050 encstate += 0x20;
4051 break;
4052 case MA_RELEASE:
4053 encstate = 0x23;
4054 term->mouse_is_down = 0;
4055 break;
4056 case MA_CLICK:
fc5b0934 4057 if (term->mouse_is_down == braw)
b9d7bcad 4058 return;
fc5b0934 4059 term->mouse_is_down = braw;
b9d7bcad 4060 break;
4061 default: break; /* placate gcc warning about enum use */
4062 }
4063 if (shift)
4064 encstate += 0x04;
4065 if (ctrl)
4066 encstate += 0x10;
4067 r = y + 33;
4068 c = x + 33;
4069
4070 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
4071 ldisc_send(term->ldisc, abuf, 6, 0);
01c034ad 4072 }
01c034ad 4073 return;
4074 }
4075
6908fed7 4076 /*
4077 * Set the selection type (rectangular or normal) at the start
4078 * of a selection attempt, from the state of Alt.
4079 */
64734920 4080 if (!alt ^ !term->cfg.rect_select)
6908fed7 4081 default_seltype = RECTANGULAR;
4082 else
4083 default_seltype = LEXICOGRAPHIC;
4084
887035a5 4085 if (term->selstate == NO_SELECTION) {
4086 term->seltype = default_seltype;
6908fed7 4087 }
4088
fc5b0934 4089 if (bcooked == MBT_SELECT && a == MA_CLICK) {
887035a5 4090 deselect(term);
4091 term->selstate = ABOUT_TO;
4092 term->seltype = default_seltype;
4093 term->selanchor = selpoint;
4094 term->selmode = SM_CHAR;
fc5b0934 4095 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
887035a5 4096 deselect(term);
4097 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
4098 term->selstate = DRAGGING;
4099 term->selstart = term->selanchor = selpoint;
4100 term->selend = term->selstart;
4101 incpos(term->selend);
4102 sel_spread(term);
fc5b0934 4103 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
4104 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
887035a5 4105 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
374330e2 4106 return;
fc5b0934 4107 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
4108 term->selstate == SELECTED) {
887035a5 4109 if (term->seltype == LEXICOGRAPHIC) {
6908fed7 4110 /*
4111 * For normal selection, we extend by moving
4112 * whichever end of the current selection is closer
4113 * to the mouse.
4114 */
887035a5 4115 if (posdiff(selpoint, term->selstart) <
4116 posdiff(term->selend, term->selstart) / 2) {
4117 term->selanchor = term->selend;
4118 decpos(term->selanchor);
6908fed7 4119 } else {
887035a5 4120 term->selanchor = term->selstart;
6908fed7 4121 }
4facdf84 4122 } else {
6908fed7 4123 /*
4124 * For rectangular selection, we have a choice of
4125 * _four_ places to put selanchor and selpoint: the
4126 * four corners of the selection.
4127 */
887035a5 4128 if (2*selpoint.x < term->selstart.x + term->selend.x)
4129 term->selanchor.x = term->selend.x-1;
6908fed7 4130 else
887035a5 4131 term->selanchor.x = term->selstart.x;
6908fed7 4132
887035a5 4133 if (2*selpoint.y < term->selstart.y + term->selend.y)
4134 term->selanchor.y = term->selend.y;
6908fed7 4135 else
887035a5 4136 term->selanchor.y = term->selstart.y;
4facdf84 4137 }
887035a5 4138 term->selstate = DRAGGING;
374330e2 4139 }
887035a5 4140 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
4141 term->selanchor = selpoint;
4142 term->selstate = DRAGGING;
4143 if (term->seltype == LEXICOGRAPHIC) {
6908fed7 4144 /*
4145 * For normal selection, we set (selstart,selend) to
4146 * (selpoint,selanchor) in some order.
4147 */
887035a5 4148 if (poslt(selpoint, term->selanchor)) {
4149 term->selstart = selpoint;
4150 term->selend = term->selanchor;
4151 incpos(term->selend);
6908fed7 4152 } else {
887035a5 4153 term->selstart = term->selanchor;
4154 term->selend = selpoint;
4155 incpos(term->selend);
6908fed7 4156 }
374330e2 4157 } else {
6908fed7 4158 /*
4159 * For rectangular selection, we may need to
4160 * interchange x and y coordinates (if the user has
4161 * dragged in the -x and +y directions, or vice versa).
4162 */
887035a5 4163 term->selstart.x = min(term->selanchor.x, selpoint.x);
4164 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
4165 term->selstart.y = min(term->selanchor.y, selpoint.y);
4166 term->selend.y = max(term->selanchor.y, selpoint.y);
374330e2 4167 }
887035a5 4168 sel_spread(term);
fc5b0934 4169 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
4170 a == MA_RELEASE) {
887035a5 4171 if (term->selstate == DRAGGING) {
374330e2 4172 /*
4173 * We've completed a selection. We now transfer the
4174 * data to the clipboard.
4175 */
887035a5 4176 clipme(term, term->selstart, term->selend,
4177 (term->seltype == RECTANGULAR));
4178 term->selstate = SELECTED;
374330e2 4179 } else
887035a5 4180 term->selstate = NO_SELECTION;
fc5b0934 4181 } else if (bcooked == MBT_PASTE
e6346999 4182 && (a == MA_CLICK
4183#if MULTICLICK_ONLY_EVENT
4184 || a == MA_2CLK || a == MA_3CLK
4185#endif
4186 )) {
a8327734 4187 request_paste(term->frontend);
374330e2 4188 }
4189
887035a5 4190 term_update(term);
374330e2 4191}
4192
6c50d421 4193void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
4194 unsigned int modifiers, unsigned int flags)
4195{
4196 char output[10];
4197 char *p = output;
4198 int prependesc = FALSE;
84b8d085 4199#if 0
6c50d421 4200 int i;
4201
4202 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
4203 for (i = 0; i < tlen; i++)
bf02e82e 4204 fprintf(stderr, " %04x", (unsigned)text[i]);
6c50d421 4205 fprintf(stderr, "\n");
84b8d085 4206#endif
6c50d421 4207
4208 /* XXX Num Lock */
4209 if ((flags & PKF_REPEAT) && term->repeat_off)
4210 return;
4211
4212 /* Currently, Meta always just prefixes everything with ESC. */
4213 if (modifiers & PKM_META)
4214 prependesc = TRUE;
4215 modifiers &= ~PKM_META;
4216
4217 /*
4218 * Alt is only used for Alt+keypad, which isn't supported yet, so
4219 * ignore it.
4220 */
4221 modifiers &= ~PKM_ALT;
4222
4223 /* Standard local function keys */
4224 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
4225 case PKM_SHIFT:
4226 if (keysym == PK_PAGEUP)
4227 /* scroll up one page */;
4228 if (keysym == PK_PAGEDOWN)
4229 /* scroll down on page */;
4230 if (keysym == PK_INSERT)
4231 term_do_paste(term);
4232 break;
4233 case PKM_CONTROL:
4234 if (keysym == PK_PAGEUP)
4235 /* scroll up one line */;
4236 if (keysym == PK_PAGEDOWN)
4237 /* scroll down one line */;
4238 /* Control-Numlock for app-keypad mode switch */
4239 if (keysym == PK_PF1)
4240 term->app_keypad_keys ^= 1;
4241 break;
4242 }
4243
4244 if (modifiers & PKM_ALT) {
4245 /* Alt+F4 (close) */
4246 /* Alt+Return (full screen) */
4247 /* Alt+Space (system menu) */
4248 }
4249
4250 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
4251 text[0] >= 0x20 && text[0] <= 0x7e) {
4252 /* ASCII chars + Control */
bf02e82e 4253 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
4254 (text[0] >= 0x61 && text[0] <= 0x7a))
6c50d421 4255 text[0] &= 0x1f;
4256 else {
4257 /*
4258 * Control-2 should return ^@ (0x00), Control-6 should return
4259 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
4260 * the DOS keyboard handling did it, and we have nothing better
4261 * to do with the key combo in question, we'll also map
4262 * Control-Backquote to ^\ (0x1C).
4263 */
4264 switch (text[0]) {
4265 case ' ': text[0] = 0x00; break;
4266 case '-': text[0] = 0x1f; break;
4267 case '/': text[0] = 0x1f; break;
4268 case '2': text[0] = 0x00; break;
4269 case '3': text[0] = 0x1b; break;
4270 case '4': text[0] = 0x1c; break;
4271 case '5': text[0] = 0x1d; break;
4272 case '6': text[0] = 0x1e; break;
4273 case '7': text[0] = 0x1f; break;
4274 case '8': text[0] = 0x7f; break;
4275 case '`': text[0] = 0x1c; break;
4276 }
4277 }
4278 }
4279
4280 /* Nethack keypad */
4281 if (term->cfg.nethack_keypad) {
4282 char c = 0;
4283 switch (keysym) {
4284 case PK_KP1: c = 'b'; break;
4285 case PK_KP2: c = 'j'; break;
4286 case PK_KP3: c = 'n'; break;
4287 case PK_KP4: c = 'h'; break;
4288 case PK_KP5: c = '.'; break;
4289 case PK_KP6: c = 'l'; break;
4290 case PK_KP7: c = 'y'; break;
4291 case PK_KP8: c = 'k'; break;
4292 case PK_KP9: c = 'u'; break;
bf02e82e 4293 default: break; /* else gcc warns `enum value not used' */
6c50d421 4294 }
4295 if (c != 0) {
4296 if (c != '.') {
4297 if (modifiers & PKM_CONTROL)
4298 c &= 0x1f;
4299 else if (modifiers & PKM_SHIFT)
4300 c = toupper(c);
4301 }
4302 *p++ = c;
4303 goto done;
4304 }
4305 }
4306
4307 /* Numeric Keypad */
4308 if (PK_ISKEYPAD(keysym)) {
4309 int xkey = 0;
4310
4311 /*
4312 * In VT400 mode, PFn always emits an escape sequence. In
4313 * Linux and tilde modes, this only happens in app keypad mode.
4314 */
4315 if (term->cfg.funky_type == FUNKY_VT400 ||
4316 ((term->cfg.funky_type == FUNKY_LINUX ||
4317 term->cfg.funky_type == FUNKY_TILDE) &&
4318 term->app_keypad_keys && !term->cfg.no_applic_k)) {
4319 switch (keysym) {
4320 case PK_PF1: xkey = 'P'; break;
4321 case PK_PF2: xkey = 'Q'; break;
4322 case PK_PF3: xkey = 'R'; break;
4323 case PK_PF4: xkey = 'S'; break;
bf02e82e 4324 default: break; /* else gcc warns `enum value not used' */
6c50d421 4325 }
4326 }
4327 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
4328 switch (keysym) {
4329 case PK_KP0: xkey = 'p'; break;
4330 case PK_KP1: xkey = 'q'; break;
4331 case PK_KP2: xkey = 'r'; break;
4332 case PK_KP3: xkey = 's'; break;
4333 case PK_KP4: xkey = 't'; break;
4334 case PK_KP5: xkey = 'u'; break;
4335 case PK_KP6: xkey = 'v'; break;
4336 case PK_KP7: xkey = 'w'; break;
4337 case PK_KP8: xkey = 'x'; break;
4338 case PK_KP9: xkey = 'y'; break;
4339 case PK_KPDECIMAL: xkey = 'n'; break;
4340 case PK_KPENTER: xkey = 'M'; break;
bf02e82e 4341 default: break; /* else gcc warns `enum value not used' */
6c50d421 4342 }
4343 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
4344 /*
4345 * xterm can't see the layout of the keypad, so it has
4346 * to rely on the X keysyms returned by the keys.
4347 * Hence, we look at the strings here, not the PuTTY
4348 * keysyms (which describe the layout).
4349 */
4350 switch (text[0]) {
4351 case '+':
4352 if (modifiers & PKM_SHIFT)
4353 xkey = 'l';
4354 else
4355 xkey = 'k';
4356 break;
4357 case '/': xkey = 'o'; break;
4358 case '*': xkey = 'j'; break;
4359 case '-': xkey = 'm'; break;
4360 }
4361 } else {
4362 /*
4363 * In all other modes, we try to retain the layout of
4364 * the DEC keypad in application mode.
4365 */
4366 switch (keysym) {
4367 case PK_KPBIGPLUS:
4368 /* This key covers the '-' and ',' keys on a VT220 */
4369 if (modifiers & PKM_SHIFT)
4370 xkey = 'm'; /* VT220 '-' */
4371 else
4372 xkey = 'l'; /* VT220 ',' */
4373 break;
4374 case PK_KPMINUS: xkey = 'm'; break;
4375 case PK_KPCOMMA: xkey = 'l'; break;
bf02e82e 4376 default: break; /* else gcc warns `enum value not used' */
6c50d421 4377 }
4378 }
4379 }
4380 if (xkey) {
4381 if (term->vt52_mode) {
4382 if (xkey >= 'P' && xkey <= 'S')
4383 p += sprintf((char *) p, "\x1B%c", xkey);
4384 else
4385 p += sprintf((char *) p, "\x1B?%c", xkey);
4386 } else
4387 p += sprintf((char *) p, "\x1BO%c", xkey);
4388 goto done;
4389 }
4390 /* Not in application mode -- treat the number pad as arrow keys? */
4391 if ((flags & PKF_NUMLOCK) == 0) {
4392 switch (keysym) {
4393 case PK_KP0: keysym = PK_INSERT; break;
4394 case PK_KP1: keysym = PK_END; break;
4395 case PK_KP2: keysym = PK_DOWN; break;
4396 case PK_KP3: keysym = PK_PAGEDOWN; break;
4397 case PK_KP4: keysym = PK_LEFT; break;
4398 case PK_KP5: keysym = PK_REST; break;
4399 case PK_KP6: keysym = PK_RIGHT; break;
4400 case PK_KP7: keysym = PK_HOME; break;
4401 case PK_KP8: keysym = PK_UP; break;
4402 case PK_KP9: keysym = PK_PAGEUP; break;
bf02e82e 4403 default: break; /* else gcc warns `enum value not used' */
6c50d421 4404 }
4405 }
4406 }
4407
4408 /* Miscellaneous keys */
4409 switch (keysym) {
4410 case PK_ESCAPE:
4411 *p++ = 0x1b;
4412 goto done;
4413 case PK_BACKSPACE:
4414 if (modifiers == 0)
4415 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
4416 else if (modifiers == PKM_SHIFT)
4417 /* We do the opposite of what is configured */
4418 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
4419 else break;
4420 goto done;
4421 case PK_TAB:
4422 if (modifiers == 0)
4423 *p++ = 0x09;
4424 else if (modifiers == PKM_SHIFT)
4425 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
4426 else break;
4427 goto done;
4428 /* XXX window.c has ctrl+shift+space sending 0xa0 */
4429 case PK_PAUSE:
4430 if (modifiers == PKM_CONTROL)
4431 *p++ = 26;
4432 else break;
4433 goto done;
4434 case PK_RETURN:
4435 case PK_KPENTER: /* Odd keypad modes handled above */
4436 if (modifiers == 0) {
4437 *p++ = 0x0d;
4438 if (term->cr_lf_return)
4439 *p++ = 0x0a;
4440 goto done;
4441 }
bf02e82e 4442 default: break; /* else gcc warns `enum value not used' */
6c50d421 4443 }
4444
4445 /* SCO function keys and editing keys */
4446 if (term->cfg.funky_type == FUNKY_SCO) {
4447 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
4448 static char const codes[] =
4449 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
4450 int index = keysym - PK_F1;
4451
4452 if (modifiers & PKM_SHIFT) index += 12;
4453 if (modifiers & PKM_CONTROL) index += 24;
4454 p += sprintf((char *) p, "\x1B[%c", codes[index]);
4455 goto done;
4456 }
4457 if (PK_ISEDITING(keysym)) {
4458 int xkey = 0;
4459
4460 switch (keysym) {
4461 case PK_DELETE: *p++ = 0x7f; goto done;
4462 case PK_HOME: xkey = 'H'; break;
4463 case PK_INSERT: xkey = 'L'; break;
4464 case PK_END: xkey = 'F'; break;
4465 case PK_PAGEUP: xkey = 'I'; break;
4466 case PK_PAGEDOWN: xkey = 'G'; break;
bf02e82e 4467 default: break; /* else gcc warns `enum value not used' */
6c50d421 4468 }
4469 p += sprintf((char *) p, "\x1B[%c", xkey);
4470 }
4471 }
4472
4473 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
4474 int code;
4475
4476 if (term->cfg.funky_type == FUNKY_XTERM) {
4477 /* Xterm shuffles these keys, apparently. */
4478 switch (keysym) {
4479 case PK_HOME: keysym = PK_INSERT; break;
4480 case PK_INSERT: keysym = PK_HOME; break;
4481 case PK_DELETE: keysym = PK_END; break;
4482 case PK_END: keysym = PK_PAGEUP; break;
4483 case PK_PAGEUP: keysym = PK_DELETE; break;
4484 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
bf02e82e 4485 default: break; /* else gcc warns `enum value not used' */
6c50d421 4486 }
4487 }
4488
4489 /* RXVT Home/End */
4490 if (term->cfg.rxvt_homeend &&
4491 (keysym == PK_HOME || keysym == PK_END)) {
4492 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
4493 goto done;
4494 }
4495
4496 if (term->vt52_mode) {
4497 int xkey;
4498
4499 /*
4500 * A real VT52 doesn't have these, and a VT220 doesn't
4501 * send anything for them in VT52 mode.
4502 */
4503 switch (keysym) {
4504 case PK_HOME: xkey = 'H'; break;
4505 case PK_INSERT: xkey = 'L'; break;
4506 case PK_DELETE: xkey = 'M'; break;
4507 case PK_END: xkey = 'E'; break;
4508 case PK_PAGEUP: xkey = 'I'; break;
4509 case PK_PAGEDOWN: xkey = 'G'; break;
bf02e82e 4510 default: break; /* else gcc warns `enum value not used' */
6c50d421 4511 }
4512 p += sprintf((char *) p, "\x1B%c", xkey);
4513 goto done;
4514 }
4515
4516 switch (keysym) {
4517 case PK_HOME: code = 1; break;
4518 case PK_INSERT: code = 2; break;
4519 case PK_DELETE: code = 3; break;
4520 case PK_END: code = 4; break;
4521 case PK_PAGEUP: code = 5; break;
4522 case PK_PAGEDOWN: code = 6; break;
bf02e82e 4523 default: break; /* else gcc warns `enum value not used' */
6c50d421 4524 }
4525 p += sprintf((char *) p, "\x1B[%d~", code);
4526 goto done;
4527 }
4528
4529 if (PK_ISFKEY(keysym)) {
4530 /* Map Shift+F1-F10 to F11-F20 */
4531 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
4532 keysym += 10;
4533 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
4534 keysym <= PK_F14) {
4535 /* XXX This overrides the XTERM/VT52 mode below */
4536 int offt = 0;
4537 if (keysym >= PK_F6) offt++;
4538 if (keysym >= PK_F12) offt++;
4539 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
4540 'P' + keysym - PK_F1 - offt);
4541 goto done;
4542 }
4543 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
4544 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
4545 goto done;
4546 }
4547 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
4548 if (term->vt52_mode)
4549 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
4550 else
4551 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
4552 goto done;
4553 }
4554 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
4555 goto done;
4556 }
4557
4558 if (PK_ISCURSOR(keysym)) {
4559 int xkey;
4560
4561 switch (keysym) {
4562 case PK_UP: xkey = 'A'; break;
4563 case PK_DOWN: xkey = 'B'; break;
4564 case PK_RIGHT: xkey = 'C'; break;
4565 case PK_LEFT: xkey = 'D'; break;
4566 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
bf02e82e 4567 default: break; /* else gcc warns `enum value not used' */
6c50d421 4568 }
4569 if (term->vt52_mode)
4570 p += sprintf((char *) p, "\x1B%c", xkey);
4571 else {
4572 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
4573
4574 /* Useful mapping of Ctrl-arrows */
4575 if (modifiers == PKM_CONTROL)
4576 app_flg = !app_flg;
4577
4578 if (app_flg)
4579 p += sprintf((char *) p, "\x1BO%c", xkey);
4580 else
4581 p += sprintf((char *) p, "\x1B[%c", xkey);
4582 }
4583 goto done;
4584 }
4585
4586 done:
4587 if (p > output || tlen > 0) {
4588 /*
4589 * Interrupt an ongoing paste. I'm not sure
4590 * this is sensible, but for the moment it's
4591 * preferable to having to faff about buffering
4592 * things.
4593 */
4594 term_nopaste(term);
4595
4596 /*
4597 * We need not bother about stdin backlogs
4598 * here, because in GUI PuTTY we can't do
4599 * anything about it anyway; there's no means
4600 * of asking Windows to hold off on KEYDOWN
4601 * messages. We _have_ to buffer everything
4602 * we're sent.
4603 */
4604 term_seen_key_event(term);
4605
4606 if (prependesc) {
84b8d085 4607#if 0
6c50d421 4608 fprintf(stderr, "sending ESC\n");
84b8d085 4609#endif
6c50d421 4610 ldisc_send(term->ldisc, "\x1b", 1, 1);
4611 }
4612
4613 if (p > output) {
84b8d085 4614#if 0
6c50d421 4615 fprintf(stderr, "sending %d bytes:", p - output);
4616 for (i = 0; i < p - output; i++)
4617 fprintf(stderr, " %02x", output[i]);
4618 fprintf(stderr, "\n");
84b8d085 4619#endif
6c50d421 4620 ldisc_send(term->ldisc, output, p - output, 1);
4621 } else if (tlen > 0) {
84b8d085 4622#if 0
6c50d421 4623 fprintf(stderr, "sending %d unichars:", tlen);
4624 for (i = 0; i < tlen; i++)
bf02e82e 4625 fprintf(stderr, " %04x", (unsigned) text[i]);
6c50d421 4626 fprintf(stderr, "\n");
84b8d085 4627#endif
6c50d421 4628 luni_send(term->ldisc, text, tlen, 1);
4629 }
4630 }
4631}
4632
887035a5 4633void term_nopaste(Terminal *term)
32874aea 4634{
887035a5 4635 if (term->paste_len == 0)
32874aea 4636 return;
887035a5 4637 sfree(term->paste_buffer);
f278d6f8 4638 term->paste_buffer = NULL;
887035a5 4639 term->paste_len = 0;
c9def1b8 4640}
4641
887035a5 4642int term_paste_pending(Terminal *term)
0f660c8f 4643{
887035a5 4644 return term->paste_len != 0;
0f660c8f 4645}
4646
887035a5 4647void term_paste(Terminal *term)
32874aea 4648{
c9def1b8 4649 long now, paste_diff;
4650
887035a5 4651 if (term->paste_len == 0)
32874aea 4652 return;
c9def1b8 4653
4654 /* Don't wait forever to paste */
887035a5 4655 if (term->paste_hold) {
f7f27309 4656 now = GETTICKCOUNT();
887035a5 4657 paste_diff = now - term->last_paste;
32874aea 4658 if (paste_diff >= 0 && paste_diff < 450)
c9def1b8 4659 return;
4660 }
887035a5 4661 term->paste_hold = 0;
c9def1b8 4662
887035a5 4663 while (term->paste_pos < term->paste_len) {
8df7a775 4664 int n = 0;
887035a5 4665 while (n + term->paste_pos < term->paste_len) {
92e23ad9 4666 if (term->paste_buffer[term->paste_pos + n++] == '\015')
8df7a775 4667 break;
4668 }
b9d7bcad 4669 if (term->ldisc)
4670 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
887035a5 4671 term->paste_pos += n;
c9def1b8 4672
887035a5 4673 if (term->paste_pos < term->paste_len) {
4674 term->paste_hold = 1;
c9def1b8 4675 return;
4676 }
4677 }
887035a5 4678 sfree(term->paste_buffer);
4679 term->paste_buffer = NULL;
4680 term->paste_len = 0;
c9def1b8 4681}
4682
887035a5 4683static void deselect(Terminal *term)
32874aea 4684{
887035a5 4685 term->selstate = NO_SELECTION;
4686 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
374330e2 4687}
4688
887035a5 4689void term_deselect(Terminal *term)
32874aea 4690{
887035a5 4691 deselect(term);
4692 term_update(term);
374330e2 4693}
fe50e814 4694
887035a5 4695int term_ldisc(Terminal *term, int option)
32874aea 4696{
4697 if (option == LD_ECHO)
887035a5 4698 return term->term_echoing;
32874aea 4699 if (option == LD_EDIT)
887035a5 4700 return term->term_editing;
0965bee0 4701 return FALSE;
4702}
4703
fe50e814 4704/*
4705 * from_backend(), to get data from the backend for the terminal.
4706 */
9fab77dc 4707int from_backend(void *vterm, int is_stderr, const char *data, int len)
32874aea 4708{
887035a5 4709 Terminal *term = (Terminal *)vterm;
4710
2b0c045b 4711 assert(len > 0);
4712
887035a5 4713 bufchain_add(&term->inbuf, data, len);
5471d09a 4714
4715 /*
a748a096 4716 * term_out() always completely empties inbuf. Therefore,
4717 * there's no reason at all to return anything other than zero
4718 * from this function, because there _can't_ be a question of
4719 * the remote side needing to wait until term_out() has cleared
4720 * a backlog.
4721 *
5471d09a 4722 * This is a slightly suboptimal way to deal with SSH2 - in
4723 * principle, the window mechanism would allow us to continue
4724 * to accept data on forwarded ports and X connections even
4725 * while the terminal processing was going slowly - but we
4726 * can't do the 100% right thing without moving the terminal
4727 * processing into a separate thread, and that might hurt
4728 * portability. So we manage stdout buffering the old SSH1 way:
4729 * if the terminal processing goes slowly, the whole SSH
4730 * connection stops accepting data until it's ready.
a748a096 4731 *
5471d09a 4732 * In practice, I can't imagine this causing serious trouble.
4733 */
4734 return 0;
fe50e814 4735}
a8327734 4736
4737void term_provide_logctx(Terminal *term, void *logctx)
4738{
4739 term->logctx = logctx;
4740}
Local modifications for Simon Tatham's `PuTTY' SSH client and terminal emulator