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Fixes to direct-to-font mode: I'd inadvertently enabled it for any
[u/mdw/putty] / terminal.c
CommitLineData
374330e2 1#include <stdio.h>
2#include <stdlib.h>
49bad831 3#include <ctype.h>
374330e2 4
e1c8e0ed 5#include <time.h>
c83de303 6#include <assert.h>
374330e2 7#include "putty.h"
887035a5 8#include "terminal.h"
9
10#define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
11#define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
12#define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
13#define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
14
15/* Product-order comparisons for rectangular block selection. */
16#define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
17#define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
18
19#define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
20#define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
374330e2 21
4eeb7d09 22#define VT52_PLUS
23
32874aea 24#define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
25#define CL_VT100 0x0002 /* VT100 */
26#define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
27#define CL_VT102 0x0008 /* VT102 */
28#define CL_VT220 0x0010 /* VT220 */
29#define CL_VT320 0x0020 /* VT320 */
30#define CL_VT420 0x0040 /* VT420 */
31#define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
32#define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
33#define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
34#define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
35#define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
e14a5a13 36
c9def1b8 37#define TM_VT100 (CL_ANSIMIN|CL_VT100)
38#define TM_VT100AVO (TM_VT100|CL_VT100AVO)
39#define TM_VT102 (TM_VT100AVO|CL_VT102)
40#define TM_VT220 (TM_VT102|CL_VT220)
41#define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
42#define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
43
44#define TM_PUTTY (0xFFFF)
e14a5a13 45
46#define compatibility(x) \
887035a5 47 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
48 term->termstate=TOPLEVEL; \
e14a5a13 49 break; \
50 }
c9def1b8 51#define compatibility2(x,y) \
887035a5 52 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
c9def1b8 54 break; \
55 }
e14a5a13 56
887035a5 57#define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
374330e2 58
4eeb7d09 59#define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
887035a5 60const wchar_t sel_nl[] = SEL_NL;
374330e2 61
62/*
63 * Internal prototypes.
64 */
9547a2ac 65static unsigned long *resizeline(unsigned long *, int);
66static unsigned long *lineptr(Terminal *, int, int);
887035a5 67static void do_paint(Terminal *, Context, int);
68static void erase_lots(Terminal *, int, int, int);
69static void swap_screen(Terminal *, int, int, int);
70static void update_sbar(Terminal *);
71static void deselect(Terminal *);
72static void term_print_finish(Terminal *);
37d2a505 73#ifdef OPTIMISE_SCROLL
74static void scroll_display(Terminal *, int, int, int);
75#endif /* OPTIMISE_SCROLL */
374330e2 76
77/*
2371caac 78 * Resize a line to make it `cols' columns wide.
79 */
9547a2ac 80static unsigned long *resizeline(unsigned long *line, int cols)
2371caac 81{
82 int i, oldlen;
83 unsigned long lineattrs;
84
85 if (line[0] != (unsigned long)cols) {
86 /*
87 * This line is the wrong length, which probably means it
88 * hasn't been accessed since a resize. Resize it now.
89 */
90 oldlen = line[0];
91 lineattrs = line[oldlen + 1];
92 line = srealloc(line, TSIZE * (2 + cols));
93 line[0] = cols;
94 for (i = oldlen; i < cols; i++)
95 line[i + 1] = ERASE_CHAR;
96 line[cols + 1] = lineattrs & LATTR_MODE;
97 }
98
99 return line;
100}
101
102/*
c83de303 103 * Retrieve a line of the screen or of the scrollback, according to
104 * whether the y coordinate is non-negative or negative
105 * (respectively).
106 */
9547a2ac 107static unsigned long *lineptr(Terminal *term, int y, int lineno)
32874aea 108{
2371caac 109 unsigned long *line, *newline;
c83de303 110 tree234 *whichtree;
2371caac 111 int treeindex;
c83de303 112
113 if (y >= 0) {
887035a5 114 whichtree = term->screen;
c83de303 115 treeindex = y;
116 } else {
887035a5 117 whichtree = term->scrollback;
118 treeindex = y + count234(term->scrollback);
c83de303 119 }
120 line = index234(whichtree, treeindex);
121
122 /* We assume that we don't screw up and retrieve something out of range. */
c83de303 123 assert(line != NULL);
c83de303 124
887035a5 125 newline = resizeline(line, term->cols);
2371caac 126 if (newline != line) {
c83de303 127 delpos234(whichtree, treeindex);
2371caac 128 addpos234(whichtree, newline, treeindex);
04dcfaa2 129 line = newline;
c83de303 130 }
131
32874aea 132 return line + 1;
c83de303 133}
32874aea 134
887035a5 135#define lineptr(x) lineptr(term,x,__LINE__)
136
c83de303 137/*
374330e2 138 * Set up power-on settings for the terminal.
139 */
887035a5 140static void power_on(Terminal *term)
32874aea 141{
887035a5 142 term->curs.x = term->curs.y = 0;
143 term->alt_x = term->alt_y = 0;
144 term->savecurs.x = term->savecurs.y = 0;
145 term->alt_t = term->marg_t = 0;
146 if (term->rows != -1)
147 term->alt_b = term->marg_b = term->rows - 1;
374330e2 148 else
887035a5 149 term->alt_b = term->marg_b = 0;
150 if (term->cols != -1) {
374330e2 151 int i;
887035a5 152 for (i = 0; i < term->cols; i++)
153 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
374330e2 154 }
f6b14226 155 term->alt_om = term->dec_om = term->cfg->dec_om;
f278d6f8 156 term->alt_ins = term->insert = FALSE;
157 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
f6b14226 158 term->alt_wrap = term->wrap = term->cfg->wrap_mode;
f278d6f8 159 term->alt_cset = term->cset = term->save_cset = 0;
160 term->alt_utf = term->utf = term->save_utf = 0;
161 term->utf_state = 0;
162 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
163 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
887035a5 164 term->rvideo = 0;
165 term->in_vbell = FALSE;
166 term->cursor_on = 1;
167 term->big_cursor = 0;
168 term->save_attr = term->curr_attr = ATTR_DEFAULT;
169 term->term_editing = term->term_echoing = FALSE;
f6b14226 170 term->app_cursor_keys = term->cfg->app_cursor;
171 term->app_keypad_keys = term->cfg->app_keypad;
172 term->use_bce = term->cfg->bce;
173 term->blink_is_real = term->cfg->blinktext;
887035a5 174 term->erase_char = ERASE_CHAR;
175 term->alt_which = 0;
176 term_print_finish(term);
374330e2 177 {
178 int i;
179 for (i = 0; i < 256; i++)
f6b14226 180 term->wordness[i] = term->cfg->wordness[i];
374330e2 181 }
887035a5 182 if (term->screen) {
183 swap_screen(term, 1, FALSE, FALSE);
184 erase_lots(term, FALSE, TRUE, TRUE);
185 swap_screen(term, 0, FALSE, FALSE);
186 erase_lots(term, FALSE, TRUE, TRUE);
374330e2 187 }
188}
189
190/*
191 * Force a screen update.
192 */
887035a5 193void term_update(Terminal *term)
32874aea 194{
374330e2 195 Context ctx;
a8327734 196 ctx = get_ctx(term->frontend);
374330e2 197 if (ctx) {
887035a5 198 int need_sbar_update = term->seen_disp_event;
f6b14226 199 if (term->seen_disp_event && term->cfg->scroll_on_disp) {
887035a5 200 term->disptop = 0; /* return to main screen */
201 term->seen_disp_event = 0;
4f892125 202 need_sbar_update = TRUE;
cabfd08c 203 }
4f892125 204 if (need_sbar_update)
887035a5 205 update_sbar(term);
206 do_paint(term, ctx, TRUE);
a8327734 207 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
32874aea 208 free_ctx(ctx);
374330e2 209 }
210}
211
212/*
2cb50250 213 * Called from front end when a keypress occurs, to trigger
214 * anything magical that needs to happen in that situation.
215 */
887035a5 216void term_seen_key_event(Terminal *term)
2cb50250 217{
218 /*
219 * On any keypress, clear the bell overload mechanism
220 * completely, on the grounds that large numbers of
221 * beeps coming from deliberate key action are likely
222 * to be intended (e.g. beeps from filename completion
223 * blocking repeatedly).
224 */
887035a5 225 term->beep_overloaded = FALSE;
226 while (term->beephead) {
227 struct beeptime *tmp = term->beephead;
228 term->beephead = tmp->next;
2cb50250 229 sfree(tmp);
230 }
887035a5 231 term->beeptail = NULL;
232 term->nbeeps = 0;
2cb50250 233
234 /*
235 * Reset the scrollback on keypress, if we're doing that.
236 */
f6b14226 237 if (term->cfg->scroll_on_key) {
887035a5 238 term->disptop = 0; /* return to main screen */
239 term->seen_disp_event = 1;
2cb50250 240 }
241}
242
243/*
374330e2 244 * Same as power_on(), but an external function.
245 */
887035a5 246void term_pwron(Terminal *term)
32874aea 247{
887035a5 248 power_on(term);
b9d7bcad 249 if (term->ldisc) /* cause ldisc to notice changes */
250 ldisc_send(term->ldisc, NULL, 0, 0);
374330e2 251 fix_cpos;
887035a5 252 term->disptop = 0;
253 deselect(term);
254 term_update(term);
374330e2 255}
256
257/*
0d2086c5 258 * When the user reconfigures us, we need to check the forbidden-
b44b307a 259 * alternate-screen config option, disable raw mouse mode if the
260 * user has disabled mouse reporting, and abandon a print job if
261 * the user has disabled printing.
0d2086c5 262 */
887035a5 263void term_reconfig(Terminal *term)
0d2086c5 264{
f6b14226 265 if (term->cfg->no_alt_screen)
887035a5 266 swap_screen(term, 0, FALSE, FALSE);
f6b14226 267 if (term->cfg->no_mouse_rep) {
887035a5 268 term->xterm_mouse = 0;
a8327734 269 set_raw_mouse_mode(term->frontend, 0);
c0d36a72 270 }
f6b14226 271 if (term->cfg->no_remote_charset) {
887035a5 272 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
273 term->sco_acs = term->alt_sco_acs = 0;
274 term->utf = 0;
0d2086c5 275 }
f6b14226 276 if (!*term->cfg->printer) {
887035a5 277 term_print_finish(term);
b44b307a 278 }
0d2086c5 279}
280
281/*
374330e2 282 * Clear the scrollback.
283 */
887035a5 284void term_clrsb(Terminal *term)
32874aea 285{
4facdf84 286 unsigned long *line;
887035a5 287 term->disptop = 0;
288 while ((line = delpos234(term->scrollback, 0)) != NULL) {
4facdf84 289 sfree(line);
290 }
887035a5 291 update_sbar(term);
374330e2 292}
293
294/*
295 * Initialise the terminal.
296 */
f6b14226 297Terminal *term_init(Config *mycfg, void *frontend)
32874aea 298{
887035a5 299 Terminal *term;
300
301 /*
302 * Allocate a new Terminal structure and initialise the fields
303 * that need it.
304 */
305 term = smalloc(sizeof(Terminal));
a8327734 306 term->frontend = frontend;
f6b14226 307 term->cfg = mycfg;
a8327734 308 term->logctx = NULL;
887035a5 309 term->compatibility_level = TM_PUTTY;
310 strcpy(term->id_string, "\033[?6c");
311 term->last_blink = term->last_tblink = 0;
312 term->paste_buffer = NULL;
313 term->last_paste = 0;
314 bufchain_init(&term->inbuf);
315 bufchain_init(&term->printer_buf);
f278d6f8 316 term->printing = term->only_printing = FALSE;
317 term->print_job = NULL;
318 term->vt52_mode = FALSE;
319 term->cr_lf_return = FALSE;
320 term->seen_disp_event = FALSE;
b9d7bcad 321 term->xterm_mouse = term->mouse_is_down = FALSE;
f278d6f8 322 term->reset_132 = FALSE;
323 term->blinker = term->tblinker = 0;
324 term->has_focus = 1;
325 term->repeat_off = FALSE;
326 term->termstate = TOPLEVEL;
327 term->selstate = NO_SELECTION;
093a75b8 328 term->curstype = 0;
887035a5 329
330 term->screen = term->alt_screen = term->scrollback = NULL;
331 term->disptop = 0;
332 term->disptext = term->dispcurs = NULL;
333 term->tabs = NULL;
334 deselect(term);
335 term->rows = term->cols = -1;
336 power_on(term);
337 term->beephead = term->beeptail = NULL;
338 term->nbeeps = 0;
339 term->lastbeep = FALSE;
340 term->beep_overloaded = FALSE;
2647b103 341 term->attr_mask = 0xffffffff;
51470298 342 term->resize_fn = NULL;
343 term->resize_ctx = NULL;
887035a5 344
345 return term;
374330e2 346}
347
348/*
349 * Set up the terminal for a given size.
350 */
887035a5 351void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
32874aea 352{
2d466ffd 353 tree234 *newalt;
354 unsigned long *newdisp, *line;
355 int i, j;
c83de303 356 int sblen;
887035a5 357 int save_alt_which = term->alt_which;
d6832394 358
887035a5 359 if (newrows == term->rows && newcols == term->cols &&
360 newsavelines == term->savelines)
374330e2 361 return; /* nothing to do */
362
887035a5 363 deselect(term);
364 swap_screen(term, 0, FALSE, FALSE);
d6832394 365
887035a5 366 term->alt_t = term->marg_t = 0;
367 term->alt_b = term->marg_b = newrows - 1;
374330e2 368
887035a5 369 if (term->rows == -1) {
370 term->scrollback = newtree234(NULL);
371 term->screen = newtree234(NULL);
372 term->rows = 0;
c83de303 373 }
374
375 /*
376 * Resize the screen and scrollback. We only need to shift
377 * lines around within our data structures, because lineptr()
378 * will take care of resizing each individual line if
379 * necessary. So:
380 *
381 * - If the new screen and the old screen differ in length, we
382 * must shunt some lines in from the scrollback or out to
383 * the scrollback.
384 *
385 * - If doing that fails to provide us with enough material to
386 * fill the new screen (i.e. the number of rows needed in
387 * the new screen exceeds the total number in the previous
388 * screen+scrollback), we must invent some blank lines to
389 * cover the gap.
390 *
391 * - Then, if the new scrollback length is less than the
392 * amount of scrollback we actually have, we must throw some
393 * away.
394 */
887035a5 395 sblen = count234(term->scrollback);
cdd6c586 396 /* Do this loop to expand the screen if newrows > rows */
887035a5 397 for (i = term->rows; i < newrows; i++) {
32874aea 398 if (sblen > 0) {
887035a5 399 line = delpos234(term->scrollback, --sblen);
32874aea 400 } else {
401 line = smalloc(TSIZE * (newcols + 2));
402 line[0] = newcols;
403 for (j = 0; j <= newcols; j++)
404 line[j + 1] = ERASE_CHAR;
405 }
887035a5 406 addpos234(term->screen, line, 0);
cdd6c586 407 }
408 /* Do this loop to shrink the screen if newrows < rows */
887035a5 409 for (i = newrows; i < term->rows; i++) {
410 line = delpos234(term->screen, 0);
411 addpos234(term->scrollback, line, sblen++);
c83de303 412 }
887035a5 413 assert(count234(term->screen) == newrows);
c83de303 414 while (sblen > newsavelines) {
887035a5 415 line = delpos234(term->scrollback, 0);
c83de303 416 sfree(line);
417 sblen--;
c9def1b8 418 }
887035a5 419 assert(count234(term->scrollback) <= newsavelines);
420 term->disptop = 0;
374330e2 421
32874aea 422 newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
423 for (i = 0; i < newrows * (newcols + 1); i++)
374330e2 424 newdisp[i] = ATTR_INVALID;
887035a5 425 sfree(term->disptext);
426 term->disptext = newdisp;
427 term->dispcurs = NULL;
374330e2 428
4facdf84 429 newalt = newtree234(NULL);
32874aea 430 for (i = 0; i < newrows; i++) {
431 line = smalloc(TSIZE * (newcols + 2));
c83de303 432 line[0] = newcols;
4facdf84 433 for (j = 0; j <= newcols; j++)
887035a5 434 line[j + 1] = term->erase_char;
4facdf84 435 addpos234(newalt, line, i);
436 }
887035a5 437 if (term->alt_screen) {
438 while (NULL != (line = delpos234(term->alt_screen, 0)))
4facdf84 439 sfree(line);
887035a5 440 freetree234(term->alt_screen);
4facdf84 441 }
887035a5 442 term->alt_screen = newalt;
374330e2 443
887035a5 444 term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
374330e2 445 {
446 int i;
887035a5 447 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
448 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
374330e2 449 }
450
887035a5 451 if (term->rows > 0)
452 term->curs.y += newrows - term->rows;
453 if (term->curs.y < 0)
454 term->curs.y = 0;
455 if (term->curs.y >= newrows)
456 term->curs.y = newrows - 1;
457 if (term->curs.x >= newcols)
458 term->curs.x = newcols - 1;
459 term->alt_x = term->alt_y = 0;
460 term->wrapnext = term->alt_wnext = FALSE;
461
462 term->rows = newrows;
463 term->cols = newcols;
464 term->savelines = newsavelines;
374330e2 465 fix_cpos;
466
887035a5 467 swap_screen(term, save_alt_which, FALSE, FALSE);
d6832394 468
887035a5 469 update_sbar(term);
470 term_update(term);
51470298 471 if (term->resize_fn)
472 term->resize_fn(term->resize_ctx, term->cols, term->rows);
473}
474
475/*
476 * Hand a function and context pointer to the terminal which it can
477 * use to notify a back end of resizes.
478 */
479void term_provide_resize_fn(Terminal *term,
480 void (*resize_fn)(void *, int, int),
481 void *resize_ctx)
482{
483 term->resize_fn = resize_fn;
484 term->resize_ctx = resize_ctx;
485 if (term->cols > 0 && term->rows > 0)
486 resize_fn(resize_ctx, term->cols, term->rows);
374330e2 487}
488
489/*
8f9b6a1a 490 * Swap screens. If `reset' is TRUE and we have been asked to
491 * switch to the alternate screen, we must bring most of its
492 * configuration from the main screen and erase the contents of the
493 * alternate screen completely. (This is even true if we're already
494 * on it! Blame xterm.)
374330e2 495 */
887035a5 496static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
32874aea 497{
374330e2 498 int t;
4facdf84 499 tree234 *ttr;
374330e2 500
8f9b6a1a 501 if (!which)
502 reset = FALSE; /* do no weird resetting if which==0 */
503
887035a5 504 if (which != term->alt_which) {
505 term->alt_which = which;
8f9b6a1a 506
887035a5 507 ttr = term->alt_screen;
508 term->alt_screen = term->screen;
509 term->screen = ttr;
510 t = term->curs.x;
8f9b6a1a 511 if (!reset && !keep_cur_pos)
887035a5 512 term->curs.x = term->alt_x;
513 term->alt_x = t;
514 t = term->curs.y;
8f9b6a1a 515 if (!reset && !keep_cur_pos)
887035a5 516 term->curs.y = term->alt_y;
517 term->alt_y = t;
518 t = term->marg_t;
519 if (!reset) term->marg_t = term->alt_t;
520 term->alt_t = t;
521 t = term->marg_b;
522 if (!reset) term->marg_b = term->alt_b;
523 term->alt_b = t;
524 t = term->dec_om;
525 if (!reset) term->dec_om = term->alt_om;
526 term->alt_om = t;
527 t = term->wrap;
528 if (!reset) term->wrap = term->alt_wrap;
529 term->alt_wrap = t;
530 t = term->wrapnext;
531 if (!reset) term->wrapnext = term->alt_wnext;
532 term->alt_wnext = t;
533 t = term->insert;
534 if (!reset) term->insert = term->alt_ins;
535 term->alt_ins = t;
536 t = term->cset;
537 if (!reset) term->cset = term->alt_cset;
538 term->alt_cset = t;
539 t = term->utf;
540 if (!reset) term->utf = term->alt_utf;
541 term->alt_utf = t;
542 t = term->sco_acs;
543 if (!reset) term->sco_acs = term->alt_sco_acs;
544 term->alt_sco_acs = t;
8f9b6a1a 545 }
374330e2 546
887035a5 547 if (reset && term->screen) {
8f9b6a1a 548 /*
549 * Yes, this _is_ supposed to honour background-colour-erase.
550 */
887035a5 551 erase_lots(term, FALSE, TRUE, TRUE);
8f9b6a1a 552 }
553
554 /*
555 * This might not be possible if we're called during
556 * initialisation.
557 */
887035a5 558 if (term->screen)
8f9b6a1a 559 fix_cpos;
374330e2 560}
561
562/*
374330e2 563 * Update the scroll bar.
564 */
887035a5 565static void update_sbar(Terminal *term)
32874aea 566{
260f3dec 567 int nscroll;
374330e2 568
887035a5 569 nscroll = count234(term->scrollback);
4facdf84 570
a8327734 571 set_sbar(term->frontend, nscroll + term->rows,
572 nscroll + term->disptop, term->rows);
374330e2 573}
574
575/*
576 * Check whether the region bounded by the two pointers intersects
577 * the scroll region, and de-select the on-screen selection if so.
578 */
887035a5 579static void check_selection(Terminal *term, pos from, pos to)
32874aea 580{
887035a5 581 if (poslt(from, term->selend) && poslt(term->selstart, to))
582 deselect(term);
374330e2 583}
584
585/*
586 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
587 * for backward.) `sb' is TRUE if the scrolling is permitted to
588 * affect the scrollback buffer.
a4450583 589 *
590 * NB this function invalidates all pointers into lines of the
591 * screen data structures. In particular, you MUST call fix_cpos
592 * after calling scroll() and before doing anything else that
593 * uses the cpos shortcut pointer.
374330e2 594 */
887035a5 595static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
32874aea 596{
4facdf84 597 unsigned long *line, *line2;
7c66d7d9 598 int i, seltop, olddisptop, shift;
c9def1b8 599
887035a5 600 if (topline != 0 || term->alt_which != 0)
4facdf84 601 sb = FALSE;
602
7c66d7d9 603 olddisptop = term->disptop;
604 shift = lines;
4facdf84 605 if (lines < 0) {
606 while (lines < 0) {
887035a5 607 line = delpos234(term->screen, botline);
608 line = resizeline(line, term->cols);
609 for (i = 0; i < term->cols; i++)
610 line[i + 1] = term->erase_char;
611 line[term->cols + 1] = 0;
612 addpos234(term->screen, line, topline);
613
614 if (term->selstart.y >= topline && term->selstart.y <= botline) {
615 term->selstart.y++;
616 if (term->selstart.y > botline) {
617 term->selstart.y = botline;
618 term->selstart.x = 0;
c9def1b8 619 }
c9def1b8 620 }
887035a5 621 if (term->selend.y >= topline && term->selend.y <= botline) {
622 term->selend.y++;
623 if (term->selend.y > botline) {
624 term->selend.y = botline;
625 term->selend.x = 0;
c9def1b8 626 }
c9def1b8 627 }
c9def1b8 628
4facdf84 629 lines++;
c9def1b8 630 }
374330e2 631 } else {
4facdf84 632 while (lines > 0) {
887035a5 633 line = delpos234(term->screen, topline);
634 if (sb && term->savelines > 0) {
635 int sblen = count234(term->scrollback);
4facdf84 636 /*
637 * We must add this line to the scrollback. We'll
638 * remove a line from the top of the scrollback to
639 * replace it, or allocate a new one if the
640 * scrollback isn't full.
641 */
887035a5 642 if (sblen == term->savelines) {
643 sblen--, line2 = delpos234(term->scrollback, 0);
c83de303 644 } else {
887035a5 645 line2 = smalloc(TSIZE * (term->cols + 2));
646 line2[0] = term->cols;
c83de303 647 }
887035a5 648 addpos234(term->scrollback, line, sblen);
4facdf84 649 line = line2;
a792432e 650
651 /*
652 * If the user is currently looking at part of the
653 * scrollback, and they haven't enabled any options
654 * that are going to reset the scrollback as a
655 * result of this movement, then the chances are
656 * they'd like to keep looking at the same line. So
657 * we move their viewpoint at the same rate as the
658 * scroll, at least until their viewpoint hits the
659 * top end of the scrollback buffer, at which point
660 * we don't have the choice any more.
661 *
662 * Thanks to Jan Holmen Holsten for the idea and
663 * initial implementation.
664 */
887035a5 665 if (term->disptop > -term->savelines && term->disptop < 0)
666 term->disptop--;
4facdf84 667 }
887035a5 668 line = resizeline(line, term->cols);
669 for (i = 0; i < term->cols; i++)
670 line[i + 1] = term->erase_char;
671 line[term->cols + 1] = 0;
672 addpos234(term->screen, line, botline);
4facdf84 673
a792432e 674 /*
675 * If the selection endpoints move into the scrollback,
676 * we keep them moving until they hit the top. However,
677 * of course, if the line _hasn't_ moved into the
678 * scrollback then we don't do this, and cut them off
679 * at the top of the scroll region.
d48db8b4 680 *
681 * This applies to selstart and selend (for an existing
682 * selection), and also selanchor (for one being
683 * selected as we speak).
a792432e 684 */
887035a5 685 seltop = sb ? -term->savelines : topline;
686
687 if (term->selstart.y >= seltop &&
688 term->selstart.y <= botline) {
689 term->selstart.y--;
690 if (term->selstart.y < seltop) {
691 term->selstart.y = seltop;
692 term->selstart.x = 0;
4facdf84 693 }
694 }
887035a5 695 if (term->selend.y >= seltop && term->selend.y <= botline) {
696 term->selend.y--;
697 if (term->selend.y < seltop) {
698 term->selend.y = seltop;
699 term->selend.x = 0;
4facdf84 700 }
701 }
887035a5 702 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
703 term->selanchor.y--;
704 if (term->selanchor.y < seltop) {
705 term->selanchor.y = seltop;
706 term->selanchor.x = 0;
d48db8b4 707 }
708 }
4facdf84 709
710 lines--;
c9def1b8 711 }
374330e2 712 }
7c66d7d9 713#ifdef OPTIMISE_SCROLL
714 shift += term->disptop - olddisptop;
715 if (shift < term->rows && shift > -term->rows && shift != 0)
716 scroll_display(term, topline, botline, shift);
717#endif /* OPTIMISE_SCROLL */
374330e2 718}
719
37d2a505 720#ifdef OPTIMISE_SCROLL
721/*
722 * Scroll the physical display, and our conception of it in disptext.
723 */
724static void scroll_display(Terminal *term, int topline, int botline, int lines)
725{
726 unsigned long *start, *end;
727 int distance, size, i;
728
729 start = term->disptext + topline * (term->cols + 1);
730 end = term->disptext + (botline + 1) * (term->cols + 1);
731 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
732 size = end - start - distance;
733 if (lines > 0) {
734 memmove(start, start + distance, size * TSIZE);
7c66d7d9 735 if (term->dispcurs >= start + distance &&
736 term->dispcurs <= start + distance + size)
737 term->dispcurs -= distance;
37d2a505 738 for (i = 0; i < distance; i++)
739 (start + size)[i] |= ATTR_INVALID;
740 } else {
741 memmove(start + distance, start, size * TSIZE);
7c66d7d9 742 if (term->dispcurs >= start && term->dispcurs <= start + size)
743 term->dispcurs += distance;
37d2a505 744 for (i = 0; i < distance; i++)
745 start[i] |= ATTR_INVALID;
746 }
747 do_scroll(term->frontend, topline, botline, lines);
748}
749#endif /* OPTIMISE_SCROLL */
750
374330e2 751/*
752 * Move the cursor to a given position, clipping at boundaries. We
753 * may or may not want to clip at the scroll margin: marg_clip is 0
754 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
755 * even _being_ outside the margins.
756 */
887035a5 757static void move(Terminal *term, int x, int y, int marg_clip)
32874aea 758{
374330e2 759 if (x < 0)
760 x = 0;
887035a5 761 if (x >= term->cols)
762 x = term->cols - 1;
374330e2 763 if (marg_clip) {
887035a5 764 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
765 y < term->marg_t)
766 y = term->marg_t;
767 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
768 y > term->marg_b)
769 y = term->marg_b;
374330e2 770 }
771 if (y < 0)
772 y = 0;
887035a5 773 if (y >= term->rows)
774 y = term->rows - 1;
775 term->curs.x = x;
776 term->curs.y = y;
374330e2 777 fix_cpos;
887035a5 778 term->wrapnext = FALSE;
374330e2 779}
780
781/*
782 * Save or restore the cursor and SGR mode.
783 */
887035a5 784static void save_cursor(Terminal *term, int save)
32874aea 785{
374330e2 786 if (save) {
887035a5 787 term->savecurs = term->curs;
788 term->save_attr = term->curr_attr;
789 term->save_cset = term->cset;
790 term->save_utf = term->utf;
791 term->save_wnext = term->wrapnext;
792 term->save_csattr = term->cset_attr[term->cset];
793 term->save_sco_acs = term->sco_acs;
374330e2 794 } else {
887035a5 795 term->curs = term->savecurs;
c9def1b8 796 /* Make sure the window hasn't shrunk since the save */
887035a5 797 if (term->curs.x >= term->cols)
798 term->curs.x = term->cols - 1;
799 if (term->curs.y >= term->rows)
800 term->curs.y = term->rows - 1;
801
802 term->curr_attr = term->save_attr;
803 term->cset = term->save_cset;
804 term->utf = term->save_utf;
805 term->wrapnext = term->save_wnext;
8c028e65 806 /*
807 * wrapnext might reset to False if the x position is no
808 * longer at the rightmost edge.
809 */
887035a5 810 if (term->wrapnext && term->curs.x < term->cols-1)
811 term->wrapnext = FALSE;
812 term->cset_attr[term->cset] = term->save_csattr;
813 term->sco_acs = term->save_sco_acs;
374330e2 814 fix_cpos;
887035a5 815 if (term->use_bce)
816 term->erase_char = (' ' | ATTR_ASCII |
817 (term->curr_attr &
818 (ATTR_FGMASK | ATTR_BGMASK)));
374330e2 819 }
820}
821
822/*
823 * Erase a large portion of the screen: the whole screen, or the
824 * whole line, or parts thereof.
825 */
887035a5 826static void erase_lots(Terminal *term,
827 int line_only, int from_begin, int to_end)
32874aea 828{
260f3dec 829 pos start, end;
4facdf84 830 int erase_lattr;
831 unsigned long *ldata;
374330e2 832
833 if (line_only) {
887035a5 834 start.y = term->curs.y;
4facdf84 835 start.x = 0;
887035a5 836 end.y = term->curs.y + 1;
4facdf84 837 end.x = 0;
838 erase_lattr = FALSE;
374330e2 839 } else {
4facdf84 840 start.y = 0;
841 start.x = 0;
887035a5 842 end.y = term->rows;
4facdf84 843 end.x = 0;
844 erase_lattr = TRUE;
845 }
846 if (!from_begin) {
887035a5 847 start = term->curs;
374330e2 848 }
4facdf84 849 if (!to_end) {
887035a5 850 end = term->curs;
2a6dfe0e 851 incpos(end);
4facdf84 852 }
887035a5 853 check_selection(term, start, end);
e14a5a13 854
855 /* Clear screen also forces a full window redraw, just in case. */
887035a5 856 if (start.y == 0 && start.x == 0 && end.y == term->rows)
857 term_invalidate(term);
e14a5a13 858
4facdf84 859 ldata = lineptr(start.y);
860 while (poslt(start, end)) {
887035a5 861 if (start.x == term->cols && !erase_lattr)
4eeb7d09 862 ldata[start.x] &= ~LATTR_WRAPPED;
4facdf84 863 else
887035a5 864 ldata[start.x] = term->erase_char;
865 if (incpos(start) && start.y < term->rows)
4facdf84 866 ldata = lineptr(start.y);
867 }
374330e2 868}
869
870/*
871 * Insert or delete characters within the current line. n is +ve if
872 * insertion is desired, and -ve for deletion.
873 */
887035a5 874static void insch(Terminal *term, int n)
32874aea 875{
374330e2 876 int dir = (n < 0 ? -1 : +1);
877 int m;
4facdf84 878 pos cursplus;
879 unsigned long *ldata;
374330e2 880
881 n = (n < 0 ? -n : n);
887035a5 882 if (n > term->cols - term->curs.x)
883 n = term->cols - term->curs.x;
884 m = term->cols - term->curs.x - n;
885 cursplus.y = term->curs.y;
886 cursplus.x = term->curs.x + n;
887 check_selection(term, term->curs, cursplus);
888 ldata = lineptr(term->curs.y);
374330e2 889 if (dir < 0) {
887035a5 890 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
374330e2 891 while (n--)
887035a5 892 ldata[term->curs.x + m++] = term->erase_char;
374330e2 893 } else {
887035a5 894 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
374330e2 895 while (n--)
887035a5 896 ldata[term->curs.x + n] = term->erase_char;
374330e2 897 }
898}
899
900/*
901 * Toggle terminal mode `mode' to state `state'. (`query' indicates
902 * whether the mode is a DEC private one or a normal one.)
903 */
887035a5 904static void toggle_mode(Terminal *term, int mode, int query, int state)
32874aea 905{
286c6b86 906 unsigned long ticks;
01c034ad 907
32874aea 908 if (query)
909 switch (mode) {
910 case 1: /* application cursor keys */
887035a5 911 term->app_cursor_keys = state;
32874aea 912 break;
913 case 2: /* VT52 mode */
887035a5 914 term->vt52_mode = !state;
915 if (term->vt52_mode) {
916 term->blink_is_real = FALSE;
917 term->vt52_bold = FALSE;
4eeb7d09 918 } else {
f6b14226 919 term->blink_is_real = term->cfg->blinktext;
4eeb7d09 920 }
32874aea 921 break;
922 case 3: /* 80/132 columns */
887035a5 923 deselect(term);
f6b14226 924 if (!term->cfg->no_remote_resize)
a8327734 925 request_resize(term->frontend, state ? 132 : 80, term->rows);
887035a5 926 term->reset_132 = state;
32874aea 927 break;
928 case 5: /* reverse video */
929 /*
930 * Toggle reverse video. If we receive an OFF within the
931 * visual bell timeout period after an ON, we trigger an
932 * effective visual bell, so that ESC[?5hESC[?5l will
933 * always be an actually _visible_ visual bell.
934 */
f7f27309 935 ticks = GETTICKCOUNT();
286c6b86 936 /* turn off a previous vbell to avoid inconsistencies */
887035a5 937 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
938 term->in_vbell = FALSE;
939 if (term->rvideo && !state && /* we're turning it off... */
940 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
286c6b86 941 /* If there's no vbell timeout already, or this one lasts
942 * longer, replace vbell_timeout with ours. */
887035a5 943 if (!term->in_vbell ||
944 (term->rvbell_startpoint - term->vbell_startpoint <
945 VBELL_TIMEOUT))
946 term->vbell_startpoint = term->rvbell_startpoint;
947 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
948 } else if (!term->rvideo && state) {
32874aea 949 /* This is an ON, so we notice the time and save it. */
887035a5 950 term->rvbell_startpoint = ticks;
32874aea 951 }
887035a5 952 term->rvideo = state;
953 term->seen_disp_event = TRUE;
32874aea 954 if (state)
887035a5 955 term_update(term);
32874aea 956 break;
957 case 6: /* DEC origin mode */
887035a5 958 term->dec_om = state;
32874aea 959 break;
960 case 7: /* auto wrap */
887035a5 961 term->wrap = state;
32874aea 962 break;
963 case 8: /* auto key repeat */
887035a5 964 term->repeat_off = !state;
32874aea 965 break;
966 case 10: /* set local edit mode */
887035a5 967 term->term_editing = state;
b9d7bcad 968 if (term->ldisc) /* cause ldisc to notice changes */
969 ldisc_send(term->ldisc, NULL, 0, 0);
32874aea 970 break;
971 case 25: /* enable/disable cursor */
972 compatibility2(OTHER, VT220);
887035a5 973 term->cursor_on = state;
974 term->seen_disp_event = TRUE;
32874aea 975 break;
976 case 47: /* alternate screen */
977 compatibility(OTHER);
887035a5 978 deselect(term);
f6b14226 979 swap_screen(term, term->cfg->no_alt_screen ? 0 : state, FALSE, FALSE);
887035a5 980 term->disptop = 0;
32874aea 981 break;
982 case 1000: /* xterm mouse 1 */
887035a5 983 term->xterm_mouse = state ? 1 : 0;
a8327734 984 set_raw_mouse_mode(term->frontend, state);
32874aea 985 break;
986 case 1002: /* xterm mouse 2 */
887035a5 987 term->xterm_mouse = state ? 2 : 0;
a8327734 988 set_raw_mouse_mode(term->frontend, state);
32874aea 989 break;
8f9b6a1a 990 case 1047: /* alternate screen */
991 compatibility(OTHER);
887035a5 992 deselect(term);
f6b14226 993 swap_screen(term, term->cfg->no_alt_screen ? 0 : state, TRUE, TRUE);
887035a5 994 term->disptop = 0;
8f9b6a1a 995 break;
996 case 1048: /* save/restore cursor */
887035a5 997 save_cursor(term, state);
998 if (!state) term->seen_disp_event = TRUE;
8f9b6a1a 999 break;
1000 case 1049: /* cursor & alternate screen */
1001 if (state)
887035a5 1002 save_cursor(term, state);
1003 if (!state) term->seen_disp_event = TRUE;
8f9b6a1a 1004 compatibility(OTHER);
887035a5 1005 deselect(term);
f6b14226 1006 swap_screen(term, term->cfg->no_alt_screen ? 0 : state, TRUE, FALSE);
8f9b6a1a 1007 if (!state)
887035a5 1008 save_cursor(term, state);
1009 term->disptop = 0;
8f9b6a1a 1010 break;
32874aea 1011 } else
1012 switch (mode) {
1013 case 4: /* set insert mode */
1014 compatibility(VT102);
887035a5 1015 term->insert = state;
32874aea 1016 break;
1017 case 12: /* set echo mode */
887035a5 1018 term->term_echoing = !state;
b9d7bcad 1019 if (term->ldisc) /* cause ldisc to notice changes */
1020 ldisc_send(term->ldisc, NULL, 0, 0);
32874aea 1021 break;
1022 case 20: /* Return sends ... */
887035a5 1023 term->cr_lf_return = state;
32874aea 1024 break;
4eeb7d09 1025 case 34: /* Make cursor BIG */
1026 compatibility2(OTHER, VT220);
887035a5 1027 term->big_cursor = !state;
7594731b 1028 }
374330e2 1029}
1030
1031/*
1032 * Process an OSC sequence: set window title or icon name.
1033 */
887035a5 1034static void do_osc(Terminal *term)
32874aea 1035{
887035a5 1036 if (term->osc_w) {
1037 while (term->osc_strlen--)
1038 term->wordness[(unsigned char)
1039 term->osc_string[term->osc_strlen]] = term->esc_args[0];
374330e2 1040 } else {
887035a5 1041 term->osc_string[term->osc_strlen] = '\0';
1042 switch (term->esc_args[0]) {
374330e2 1043 case 0:
1044 case 1:
f6b14226 1045 if (!term->cfg->no_remote_wintitle)
a8327734 1046 set_icon(term->frontend, term->osc_string);
887035a5 1047 if (term->esc_args[0] == 1)
374330e2 1048 break;
1049 /* fall through: parameter 0 means set both */
1050 case 2:
1051 case 21:
f6b14226 1052 if (!term->cfg->no_remote_wintitle)
a8327734 1053 set_title(term->frontend, term->osc_string);
374330e2 1054 break;
1055 }
1056 }
1057}
1058
1059/*
b44b307a 1060 * ANSI printing routines.
1061 */
887035a5 1062static void term_print_setup(Terminal *term)
b44b307a 1063{
887035a5 1064 bufchain_clear(&term->printer_buf);
f6b14226 1065 term->print_job = printer_start_job(term->cfg->printer);
b44b307a 1066}
887035a5 1067static void term_print_flush(Terminal *term)
b44b307a 1068{
1069 void *data;
1070 int len;
1071 int size;
887035a5 1072 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1073 bufchain_prefix(&term->printer_buf, &data, &len);
b44b307a 1074 if (len > size-5)
1075 len = size-5;
887035a5 1076 printer_job_data(term->print_job, data, len);
1077 bufchain_consume(&term->printer_buf, len);
b44b307a 1078 }
1079}
887035a5 1080static void term_print_finish(Terminal *term)
b44b307a 1081{
1082 void *data;
1083 int len, size;
1084 char c;
1085
887035a5 1086 if (!term->printing && !term->only_printing)
1709795f 1087 return; /* we need do nothing */
1088
887035a5 1089 term_print_flush(term);
1090 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1091 bufchain_prefix(&term->printer_buf, &data, &len);
b44b307a 1092 c = *(char *)data;
1093 if (c == '\033' || c == '\233') {
887035a5 1094 bufchain_consume(&term->printer_buf, size);
b44b307a 1095 break;
1096 } else {
887035a5 1097 printer_job_data(term->print_job, &c, 1);
1098 bufchain_consume(&term->printer_buf, 1);
b44b307a 1099 }
1100 }
887035a5 1101 printer_finish_job(term->print_job);
1102 term->print_job = NULL;
1103 term->printing = term->only_printing = FALSE;
b44b307a 1104}
1105
1106/*
374330e2 1107 * Remove everything currently in `inbuf' and stick it up on the
1108 * in-memory display. There's a big state machine in here to
1109 * process escape sequences...
1110 */
887035a5 1111void term_out(Terminal *term)
32874aea 1112{
a748a096 1113 int c, unget;
1114 unsigned char localbuf[256], *chars;
1115 int nchars = 0;
1116
1117 unget = -1;
1118
1709795f 1119 chars = NULL; /* placate compiler warnings */
887035a5 1120 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
a748a096 1121 if (unget == -1) {
1122 if (nchars == 0) {
1123 void *ret;
887035a5 1124 bufchain_prefix(&term->inbuf, &ret, &nchars);
a748a096 1125 if (nchars > sizeof(localbuf))
1126 nchars = sizeof(localbuf);
1127 memcpy(localbuf, ret, nchars);
887035a5 1128 bufchain_consume(&term->inbuf, nchars);
a748a096 1129 chars = localbuf;
1130 assert(chars != NULL);
1131 }
1132 c = *chars++;
1133 nchars--;
c9def1b8 1134
a748a096 1135 /*
1136 * Optionally log the session traffic to a file. Useful for
1137 * debugging and possibly also useful for actual logging.
1138 */
f6b14226 1139 if (term->cfg->logtype == LGTYP_DEBUG && term->logctx)
a8327734 1140 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
a748a096 1141 } else {
1142 c = unget;
1143 unget = -1;
5a16642f 1144 }
1145
e14a5a13 1146 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1147 * be able to display 8-bit characters, but I'll let that go 'cause
1148 * of i18n.
1149 */
4eeb7d09 1150
b44b307a 1151 /*
1152 * If we're printing, add the character to the printer
1153 * buffer.
1154 */
887035a5 1155 if (term->printing) {
1156 bufchain_add(&term->printer_buf, &c, 1);
b44b307a 1157
1158 /*
1159 * If we're in print-only mode, we use a much simpler
1160 * state machine designed only to recognise the ESC[4i
1161 * termination sequence.
1162 */
887035a5 1163 if (term->only_printing) {
b44b307a 1164 if (c == '\033')
887035a5 1165 term->print_state = 1;
b44b307a 1166 else if (c == (unsigned char)'\233')
887035a5 1167 term->print_state = 2;
1168 else if (c == '[' && term->print_state == 1)
1169 term->print_state = 2;
1170 else if (c == '4' && term->print_state == 2)
1171 term->print_state = 3;
1172 else if (c == 'i' && term->print_state == 3)
1173 term->print_state = 4;
b44b307a 1174 else
887035a5 1175 term->print_state = 0;
1176 if (term->print_state == 4) {
1177 term_print_finish(term);
b44b307a 1178 }
1179 continue;
1180 }
1181 }
1182
4eeb7d09 1183 /* First see about all those translations. */
887035a5 1184 if (term->termstate == TOPLEVEL) {
1185 if (in_utf(term))
1186 switch (term->utf_state) {
4eeb7d09 1187 case 0:
1188 if (c < 0x80) {
8f22582c 1189 /* UTF-8 must be stateless so we ignore iso2022. */
1190 if (unitab_ctrl[c] != 0xFF)
1191 c = unitab_ctrl[c];
1192 else c = ((unsigned char)c) | ATTR_ASCII;
1193 break;
4eeb7d09 1194 } else if ((c & 0xe0) == 0xc0) {
887035a5 1195 term->utf_size = term->utf_state = 1;
1196 term->utf_char = (c & 0x1f);
4eeb7d09 1197 } else if ((c & 0xf0) == 0xe0) {
887035a5 1198 term->utf_size = term->utf_state = 2;
1199 term->utf_char = (c & 0x0f);
4eeb7d09 1200 } else if ((c & 0xf8) == 0xf0) {
887035a5 1201 term->utf_size = term->utf_state = 3;
1202 term->utf_char = (c & 0x07);
4eeb7d09 1203 } else if ((c & 0xfc) == 0xf8) {
887035a5 1204 term->utf_size = term->utf_state = 4;
1205 term->utf_char = (c & 0x03);
4eeb7d09 1206 } else if ((c & 0xfe) == 0xfc) {
887035a5 1207 term->utf_size = term->utf_state = 5;
1208 term->utf_char = (c & 0x01);
4eeb7d09 1209 } else {
1210 c = UCSERR;
1211 break;
1212 }
1213 continue;
1214 case 1:
1215 case 2:
1216 case 3:
1217 case 4:
1218 case 5:
1219 if ((c & 0xC0) != 0x80) {
a748a096 1220 unget = c;
5a16642f 1221 c = UCSERR;
887035a5 1222 term->utf_state = 0;
4eeb7d09 1223 break;
1224 }
887035a5 1225 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1226 if (--term->utf_state)
4eeb7d09 1227 continue;
1228
887035a5 1229 c = term->utf_char;
4eeb7d09 1230
1231 /* Is somebody trying to be evil! */
1232 if (c < 0x80 ||
887035a5 1233 (c < 0x800 && term->utf_size >= 2) ||
1234 (c < 0x10000 && term->utf_size >= 3) ||
1235 (c < 0x200000 && term->utf_size >= 4) ||
1236 (c < 0x4000000 && term->utf_size >= 5))
4eeb7d09 1237 c = UCSERR;
1238
1239 /* Unicode line separator and paragraph separator are CR-LF */
1240 if (c == 0x2028 || c == 0x2029)
1241 c = 0x85;
1242
1243 /* High controls are probably a Baaad idea too. */
1244 if (c < 0xA0)
1245 c = 0xFFFD;
1246
1247 /* The UTF-16 surrogates are not nice either. */
1248 /* The standard give the option of decoding these:
1249 * I don't want to! */
1250 if (c >= 0xD800 && c < 0xE000)
1251 c = UCSERR;
1252
1253 /* ISO 10646 characters now limited to UTF-16 range. */
1254 if (c > 0x10FFFF)
1255 c = UCSERR;
1256
1257 /* This is currently a TagPhobic application.. */
1258 if (c >= 0xE0000 && c <= 0xE007F)
1259 continue;
1260
1261 /* U+FEFF is best seen as a null. */
1262 if (c == 0xFEFF)
1263 continue;
1264 /* But U+FFFE is an error. */
1265 if (c == 0xFFFE || c == 0xFFFF)
1266 c = UCSERR;
1267
1268 /* Oops this is a 16bit implementation */
1269 if (c >= 0x10000)
1270 c = 0xFFFD;
1271 break;
d3cb5465 1272 }
1273 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
887035a5 1274 else if(term->sco_acs &&
92e23ad9 1275 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
d3cb5465 1276 {
5dc6132d 1277 if (term->sco_acs == 2) c |= 0x80;
d3cb5465 1278 c |= ATTR_SCOACS;
4eeb7d09 1279 } else {
887035a5 1280 switch (term->cset_attr[term->cset]) {
4eeb7d09 1281 /*
1282 * Linedraw characters are different from 'ESC ( B'
1283 * only for a small range. For ones outside that
1284 * range, make sure we use the same font as well as
1285 * the same encoding.
1286 */
1287 case ATTR_LINEDRW:
1288 if (unitab_ctrl[c] != 0xFF)
1289 c = unitab_ctrl[c];
1290 else
1291 c = ((unsigned char) c) | ATTR_LINEDRW;
1292 break;
1293
1294 case ATTR_GBCHR:
1295 /* If UK-ASCII, make the '#' a LineDraw Pound */
1296 if (c == '#') {
1297 c = '}' | ATTR_LINEDRW;
1298 break;
1299 }
1300 /*FALLTHROUGH*/ case ATTR_ASCII:
1301 if (unitab_ctrl[c] != 0xFF)
1302 c = unitab_ctrl[c];
1303 else
1304 c = ((unsigned char) c) | ATTR_ASCII;
1305 break;
d3cb5465 1306 case ATTR_SCOACS:
1307 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1308 break;
4eeb7d09 1309 }
1310 }
1311 }
1312
1313 /* How about C1 controls ? */
887035a5 1314 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1315 !term->vt52_mode && has_compat(VT220)) {
1316 term->termstate = SEEN_ESC;
1317 term->esc_query = FALSE;
4eeb7d09 1318 c = '@' + (c & 0x1F);
1319 }
1320
1321 /* Or the GL control. */
887035a5 1322 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1323 if (term->curs.x && !term->wrapnext)
1324 term->curs.x--;
1325 term->wrapnext = FALSE;
4eeb7d09 1326 fix_cpos;
f6b14226 1327 if (!term->cfg->no_dbackspace) /* destructive bksp might be disabled */
887035a5 1328 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
4eeb7d09 1329 } else
1330 /* Or normal C0 controls. */
887035a5 1331 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
374330e2 1332 switch (c) {
1333 case '\005': /* terminal type query */
e14a5a13 1334 /* Strictly speaking this is VT100 but a VT100 defaults to
1335 * no response. Other terminals respond at their option.
1336 *
1337 * Don't put a CR in the default string as this tends to
1338 * upset some weird software.
1339 *
1340 * An xterm returns "xterm" (5 characters)
1341 */
32874aea 1342 compatibility(ANSIMIN);
b9d7bcad 1343 if (term->ldisc) {
e7fbcdd8 1344 char abuf[256], *s, *d;
32874aea 1345 int state = 0;
f6b14226 1346 for (s = term->cfg->answerback, d = abuf; *s; s++) {
32874aea 1347 if (state) {
1348 if (*s >= 'a' && *s <= 'z')
1349 *d++ = (*s - ('a' - 1));
1350 else if ((*s >= '@' && *s <= '_') ||
1351 *s == '?' || (*s & 0x80))
1352 *d++ = ('@' ^ *s);
1353 else if (*s == '~')
1354 *d++ = '^';
1355 state = 0;
1356 } else if (*s == '^') {
1357 state = 1;
1358 } else
4eeb7d09 1359 *d++ = *s;
e7fbcdd8 1360 }
b9d7bcad 1361 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1362 abuf, d - abuf, 0);
e7fbcdd8 1363 }
374330e2 1364 break;
1365 case '\007':
156686ef 1366 {
1367 struct beeptime *newbeep;
286c6b86 1368 unsigned long ticks;
156686ef 1369
f7f27309 1370 ticks = GETTICKCOUNT();
156686ef 1371
887035a5 1372 if (!term->beep_overloaded) {
156686ef 1373 newbeep = smalloc(sizeof(struct beeptime));
1374 newbeep->ticks = ticks;
1375 newbeep->next = NULL;
887035a5 1376 if (!term->beephead)
1377 term->beephead = newbeep;
156686ef 1378 else
887035a5 1379 term->beeptail->next = newbeep;
1380 term->beeptail = newbeep;
1381 term->nbeeps++;
156686ef 1382 }
1383
1384 /*
1385 * Throw out any beeps that happened more than
1386 * t seconds ago.
1387 */
887035a5 1388 while (term->beephead &&
f6b14226 1389 term->beephead->ticks < ticks - term->cfg->bellovl_t) {
887035a5 1390 struct beeptime *tmp = term->beephead;
1391 term->beephead = tmp->next;
156686ef 1392 sfree(tmp);
887035a5 1393 if (!term->beephead)
1394 term->beeptail = NULL;
1395 term->nbeeps--;
156686ef 1396 }
1397
f6b14226 1398 if (term->cfg->bellovl && term->beep_overloaded &&
1399 ticks - term->lastbeep >= (unsigned)term->cfg->bellovl_s) {
156686ef 1400 /*
1401 * If we're currently overloaded and the
1402 * last beep was more than s seconds ago,
1403 * leave overload mode.
1404 */
887035a5 1405 term->beep_overloaded = FALSE;
f6b14226 1406 } else if (term->cfg->bellovl && !term->beep_overloaded &&
1407 term->nbeeps >= term->cfg->bellovl_n) {
156686ef 1408 /*
1409 * Now, if we have n or more beeps
1410 * remaining in the queue, go into overload
1411 * mode.
1412 */
887035a5 1413 term->beep_overloaded = TRUE;
156686ef 1414 }
887035a5 1415 term->lastbeep = ticks;
156686ef 1416
1417 /*
1418 * Perform an actual beep if we're not overloaded.
1419 */
f6b14226 1420 if (!term->cfg->bellovl || !term->beep_overloaded) {
1421 beep(term->frontend, term->cfg->beep);
1422 if (term->cfg->beep == BELL_VISUAL) {
887035a5 1423 term->in_vbell = TRUE;
1424 term->vbell_startpoint = ticks;
1425 term_update(term);
0ce89525 1426 }
156686ef 1427 }
887035a5 1428 term->disptop = 0;
156686ef 1429 }
374330e2 1430 break;
1431 case '\b':
887035a5 1432 if (term->curs.x == 0 &&
1433 (term->curs.y == 0 || term->wrap == 0))
1434 /* do nothing */ ;
1435 else if (term->curs.x == 0 && term->curs.y > 0)
1436 term->curs.x = term->cols - 1, term->curs.y--;
1437 else if (term->wrapnext)
1438 term->wrapnext = FALSE;
374330e2 1439 else
887035a5 1440 term->curs.x--;
374330e2 1441 fix_cpos;
887035a5 1442 term->seen_disp_event = TRUE;
374330e2 1443 break;
1444 case '\016':
32874aea 1445 compatibility(VT100);
887035a5 1446 term->cset = 1;
374330e2 1447 break;
1448 case '\017':
32874aea 1449 compatibility(VT100);
887035a5 1450 term->cset = 0;
374330e2 1451 break;
1452 case '\033':
887035a5 1453 if (term->vt52_mode)
1454 term->termstate = VT52_ESC;
e14a5a13 1455 else {
1456 compatibility(ANSIMIN);
887035a5 1457 term->termstate = SEEN_ESC;
1458 term->esc_query = FALSE;
e14a5a13 1459 }
374330e2 1460 break;
92e23ad9 1461 case '\015':
887035a5 1462 term->curs.x = 0;
1463 term->wrapnext = FALSE;
374330e2 1464 fix_cpos;
887035a5 1465 term->seen_disp_event = TRUE;
1466 term->paste_hold = 0;
a8327734 1467 if (term->logctx)
1468 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
374330e2 1469 break;
374330e2 1470 case '\014':
1a837633 1471 if (has_compat(SCOANSI)) {
887035a5 1472 move(term, 0, 0, 0);
1473 erase_lots(term, FALSE, FALSE, TRUE);
1474 term->disptop = 0;
1475 term->wrapnext = FALSE;
1476 term->seen_disp_event = 1;
1a837633 1477 break;
1478 }
1479 case '\013':
32874aea 1480 compatibility(VT100);
92e23ad9 1481 case '\012':
887035a5 1482 if (term->curs.y == term->marg_b)
1483 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1484 else if (term->curs.y < term->rows - 1)
1485 term->curs.y++;
f6b14226 1486 if (term->cfg->lfhascr)
887035a5 1487 term->curs.x = 0;
374330e2 1488 fix_cpos;
887035a5 1489 term->wrapnext = FALSE;
1490 term->seen_disp_event = 1;
1491 term->paste_hold = 0;
a8327734 1492 if (term->logctx)
1493 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
374330e2 1494 break;
1495 case '\t':
374330e2 1496 {
887035a5 1497 pos old_curs = term->curs;
1498 unsigned long *ldata = lineptr(term->curs.y);
c9def1b8 1499
1500 do {
887035a5 1501 term->curs.x++;
1502 } while (term->curs.x < term->cols - 1 &&
1503 !term->tabs[term->curs.x]);
c9def1b8 1504
887035a5 1505 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1506 if (term->curs.x >= term->cols / 2)
1507 term->curs.x = term->cols / 2 - 1;
32874aea 1508 } else {
887035a5 1509 if (term->curs.x >= term->cols)
1510 term->curs.x = term->cols - 1;
c9def1b8 1511 }
1512
374330e2 1513 fix_cpos;
887035a5 1514 check_selection(term, old_curs, term->curs);
374330e2 1515 }
887035a5 1516 term->seen_disp_event = TRUE;
374330e2 1517 break;
cabfd08c 1518 }
32874aea 1519 } else
887035a5 1520 switch (term->termstate) {
32874aea 1521 case TOPLEVEL:
887035a5 1522 /* Only graphic characters get this far;
1523 * ctrls are stripped above */
1524 if (term->wrapnext && term->wrap) {
1525 term->cpos[1] |= LATTR_WRAPPED;
1526 if (term->curs.y == term->marg_b)
1527 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1528 else if (term->curs.y < term->rows - 1)
1529 term->curs.y++;
1530 term->curs.x = 0;
32874aea 1531 fix_cpos;
887035a5 1532 term->wrapnext = FALSE;
374330e2 1533 }
887035a5 1534 if (term->insert)
1535 insch(term, 1);
1536 if (term->selstate != NO_SELECTION) {
1537 pos cursplus = term->curs;
32874aea 1538 incpos(cursplus);
887035a5 1539 check_selection(term, term->curs, cursplus);
374330e2 1540 }
a8327734 1541 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1542 term->logctx)
1543 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
4eeb7d09 1544 {
4eeb7d09 1545 int width = 0;
1546 if (DIRECT_CHAR(c))
1547 width = 1;
1548 if (!width)
1549 width = wcwidth((wchar_t) c);
1550 switch (width) {
1551 case 2:
887035a5 1552 *term->cpos++ = c | term->curr_attr;
1553 if (++term->curs.x == term->cols) {
1554 *term->cpos |= LATTR_WRAPPED;
1555 if (term->curs.y == term->marg_b)
1556 scroll(term, term->marg_t, term->marg_b,
1557 1, TRUE);
1558 else if (term->curs.y < term->rows - 1)
1559 term->curs.y++;
1560 term->curs.x = 0;
5a73255e 1561 fix_cpos;
4eeb7d09 1562 }
887035a5 1563 *term->cpos++ = UCSWIDE | term->curr_attr;
5a73255e 1564 break;
4eeb7d09 1565 case 1:
887035a5 1566 *term->cpos++ = c | term->curr_attr;
32874aea 1567 break;
4eeb7d09 1568 default:
1569 continue;
32874aea 1570 }
374330e2 1571 }
887035a5 1572 term->curs.x++;
1573 if (term->curs.x == term->cols) {
1574 term->cpos--;
1575 term->curs.x--;
1576 term->wrapnext = TRUE;
1577 if (term->wrap && term->vt52_mode) {
1578 term->cpos[1] |= LATTR_WRAPPED;
1579 if (term->curs.y == term->marg_b)
1580 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1581 else if (term->curs.y < term->rows - 1)
1582 term->curs.y++;
1583 term->curs.x = 0;
4eeb7d09 1584 fix_cpos;
887035a5 1585 term->wrapnext = FALSE;
4eeb7d09 1586 }
e14a5a13 1587 }
887035a5 1588 term->seen_disp_event = 1;
374330e2 1589 break;
32874aea 1590
32874aea 1591 case OSC_MAYBE_ST:
1592 /*
1593 * This state is virtually identical to SEEN_ESC, with the
1594 * exception that we have an OSC sequence in the pipeline,
1595 * and _if_ we see a backslash, we process it.
1596 */
1597 if (c == '\\') {
887035a5 1598 do_osc(term);
1599 term->termstate = TOPLEVEL;
32874aea 1600 break;
e14a5a13 1601 }
32874aea 1602 /* else fall through */
1603 case SEEN_ESC:
4eeb7d09 1604 if (c >= ' ' && c <= '/') {
887035a5 1605 if (term->esc_query)
1606 term->esc_query = -1;
4eeb7d09 1607 else
887035a5 1608 term->esc_query = c;
32874aea 1609 break;
4eeb7d09 1610 }
887035a5 1611 term->termstate = TOPLEVEL;
1612 switch (ANSI(c, term->esc_query)) {
32874aea 1613 case '[': /* enter CSI mode */
887035a5 1614 term->termstate = SEEN_CSI;
1615 term->esc_nargs = 1;
1616 term->esc_args[0] = ARG_DEFAULT;
1617 term->esc_query = FALSE;
32874aea 1618 break;
1619 case ']': /* xterm escape sequences */
1620 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1621 compatibility(OTHER);
887035a5 1622 term->termstate = SEEN_OSC;
1623 term->esc_args[0] = 0;
32874aea 1624 break;
32874aea 1625 case '7': /* save cursor */
1626 compatibility(VT100);
887035a5 1627 save_cursor(term, TRUE);
32874aea 1628 break;
1629 case '8': /* restore cursor */
1630 compatibility(VT100);
887035a5 1631 save_cursor(term, FALSE);
1632 term->seen_disp_event = TRUE;
32874aea 1633 break;
1634 case '=':
1635 compatibility(VT100);
887035a5 1636 term->app_keypad_keys = TRUE;
32874aea 1637 break;
1638 case '>':
1639 compatibility(VT100);
887035a5 1640 term->app_keypad_keys = FALSE;
32874aea 1641 break;
1642 case 'D': /* exactly equivalent to LF */
1643 compatibility(VT100);
887035a5 1644 if (term->curs.y == term->marg_b)
1645 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1646 else if (term->curs.y < term->rows - 1)
1647 term->curs.y++;
32874aea 1648 fix_cpos;
887035a5 1649 term->wrapnext = FALSE;
1650 term->seen_disp_event = TRUE;
32874aea 1651 break;
1652 case 'E': /* exactly equivalent to CR-LF */
1653 compatibility(VT100);
887035a5 1654 term->curs.x = 0;
1655 if (term->curs.y == term->marg_b)
1656 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1657 else if (term->curs.y < term->rows - 1)
1658 term->curs.y++;
32874aea 1659 fix_cpos;
887035a5 1660 term->wrapnext = FALSE;
1661 term->seen_disp_event = TRUE;
32874aea 1662 break;
1663 case 'M': /* reverse index - backwards LF */
1664 compatibility(VT100);
887035a5 1665 if (term->curs.y == term->marg_t)
1666 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1667 else if (term->curs.y > 0)
1668 term->curs.y--;
32874aea 1669 fix_cpos;
887035a5 1670 term->wrapnext = FALSE;
1671 term->seen_disp_event = TRUE;
32874aea 1672 break;
1673 case 'Z': /* terminal type query */
1674 compatibility(VT100);
b9d7bcad 1675 if (term->ldisc)
1676 ldisc_send(term->ldisc, term->id_string,
1677 strlen(term->id_string), 0);
32874aea 1678 break;
1679 case 'c': /* restore power-on settings */
1680 compatibility(VT100);
887035a5 1681 power_on(term);
b9d7bcad 1682 if (term->ldisc) /* cause ldisc to notice changes */
1683 ldisc_send(term->ldisc, NULL, 0, 0);
887035a5 1684 if (term->reset_132) {
f6b14226 1685 if (!term->cfg->no_remote_resize)
a8327734 1686 request_resize(term->frontend, 80, term->rows);
887035a5 1687 term->reset_132 = 0;
374330e2 1688 }
32874aea 1689 fix_cpos;
887035a5 1690 term->disptop = 0;
1691 term->seen_disp_event = TRUE;
32874aea 1692 break;
32874aea 1693 case 'H': /* set a tab */
1694 compatibility(VT100);
887035a5 1695 term->tabs[term->curs.x] = TRUE;
32874aea 1696 break;
4eeb7d09 1697
1698 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1699 compatibility(VT100);
1700 {
1701 unsigned long *ldata;
1702 int i, j;
1703 pos scrtop, scrbot;
1704
887035a5 1705 for (i = 0; i < term->rows; i++) {
4eeb7d09 1706 ldata = lineptr(i);
887035a5 1707 for (j = 0; j < term->cols; j++)
4eeb7d09 1708 ldata[j] = ATTR_DEFAULT | 'E';
887035a5 1709 ldata[term->cols] = 0;
4eeb7d09 1710 }
887035a5 1711 term->disptop = 0;
1712 term->seen_disp_event = TRUE;
4eeb7d09 1713 scrtop.x = scrtop.y = 0;
1714 scrbot.x = 0;
887035a5 1715 scrbot.y = term->rows;
1716 check_selection(term, scrtop, scrbot);
4eeb7d09 1717 }
1718 break;
1719
1720 case ANSI('3', '#'):
1721 case ANSI('4', '#'):
1722 case ANSI('5', '#'):
1723 case ANSI('6', '#'):
1724 compatibility(VT100);
1725 {
1726 unsigned long nlattr;
1727 unsigned long *ldata;
887035a5 1728 switch (ANSI(c, term->esc_query)) {
4eeb7d09 1729 case ANSI('3', '#'):
1730 nlattr = LATTR_TOP;
1731 break;
1732 case ANSI('4', '#'):
1733 nlattr = LATTR_BOT;
1734 break;
1735 case ANSI('5', '#'):
1736 nlattr = LATTR_NORM;
1737 break;
2d466ffd 1738 default: /* spiritually case ANSI('6', '#'): */
4eeb7d09 1739 nlattr = LATTR_WIDE;
1740 break;
1741 }
887035a5 1742 ldata = lineptr(term->curs.y);
1743 ldata[term->cols] &= ~LATTR_MODE;
1744 ldata[term->cols] |= nlattr;
4eeb7d09 1745 }
1746 break;
1747
1748 case ANSI('A', '('):
1749 compatibility(VT100);
f6b14226 1750 if (!term->cfg->no_remote_charset)
887035a5 1751 term->cset_attr[0] = ATTR_GBCHR;
4eeb7d09 1752 break;
1753 case ANSI('B', '('):
1754 compatibility(VT100);
f6b14226 1755 if (!term->cfg->no_remote_charset)
887035a5 1756 term->cset_attr[0] = ATTR_ASCII;
4eeb7d09 1757 break;
1758 case ANSI('0', '('):
1759 compatibility(VT100);
f6b14226 1760 if (!term->cfg->no_remote_charset)
887035a5 1761 term->cset_attr[0] = ATTR_LINEDRW;
4eeb7d09 1762 break;
d3cb5465 1763 case ANSI('U', '('):
1764 compatibility(OTHER);
f6b14226 1765 if (!term->cfg->no_remote_charset)
887035a5 1766 term->cset_attr[0] = ATTR_SCOACS;
d3cb5465 1767 break;
4eeb7d09 1768
1769 case ANSI('A', ')'):
1770 compatibility(VT100);
f6b14226 1771 if (!term->cfg->no_remote_charset)
887035a5 1772 term->cset_attr[1] = ATTR_GBCHR;
4eeb7d09 1773 break;
1774 case ANSI('B', ')'):
1775 compatibility(VT100);
f6b14226 1776 if (!term->cfg->no_remote_charset)
887035a5 1777 term->cset_attr[1] = ATTR_ASCII;
4eeb7d09 1778 break;
1779 case ANSI('0', ')'):
1780 compatibility(VT100);
f6b14226 1781 if (!term->cfg->no_remote_charset)
887035a5 1782 term->cset_attr[1] = ATTR_LINEDRW;
4eeb7d09 1783 break;
d3cb5465 1784 case ANSI('U', ')'):
1785 compatibility(OTHER);
f6b14226 1786 if (!term->cfg->no_remote_charset)
887035a5 1787 term->cset_attr[1] = ATTR_SCOACS;
d3cb5465 1788 break;
4eeb7d09 1789
1790 case ANSI('8', '%'): /* Old Linux code */
1791 case ANSI('G', '%'):
1792 compatibility(OTHER);
f6b14226 1793 if (!term->cfg->no_remote_charset)
887035a5 1794 term->utf = 1;
4eeb7d09 1795 break;
1796 case ANSI('@', '%'):
1797 compatibility(OTHER);
f6b14226 1798 if (!term->cfg->no_remote_charset)
887035a5 1799 term->utf = 0;
4eeb7d09 1800 break;
374330e2 1801 }
1802 break;
32874aea 1803 case SEEN_CSI:
887035a5 1804 term->termstate = TOPLEVEL; /* default */
32874aea 1805 if (isdigit(c)) {
887035a5 1806 if (term->esc_nargs <= ARGS_MAX) {
1807 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
1808 term->esc_args[term->esc_nargs - 1] = 0;
1809 term->esc_args[term->esc_nargs - 1] =
1810 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
32874aea 1811 }
887035a5 1812 term->termstate = SEEN_CSI;
32874aea 1813 } else if (c == ';') {
887035a5 1814 if (++term->esc_nargs <= ARGS_MAX)
1815 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
1816 term->termstate = SEEN_CSI;
32874aea 1817 } else if (c < '@') {
887035a5 1818 if (term->esc_query)
1819 term->esc_query = -1;
32874aea 1820 else if (c == '?')
887035a5 1821 term->esc_query = TRUE;
32874aea 1822 else
887035a5 1823 term->esc_query = c;
1824 term->termstate = SEEN_CSI;
32874aea 1825 } else
887035a5 1826 switch (ANSI(c, term->esc_query)) {
32874aea 1827 case 'A': /* move up N lines */
887035a5 1828 move(term, term->curs.x,
1829 term->curs.y - def(term->esc_args[0], 1), 1);
1830 term->seen_disp_event = TRUE;
32874aea 1831 break;
1832 case 'e': /* move down N lines */
1833 compatibility(ANSI);
5442e92f 1834 /* FALLTHROUGH */
32874aea 1835 case 'B':
887035a5 1836 move(term, term->curs.x,
1837 term->curs.y + def(term->esc_args[0], 1), 1);
1838 term->seen_disp_event = TRUE;
32874aea 1839 break;
32874aea 1840 case ANSI('c', '>'): /* report xterm version */
1841 compatibility(OTHER);
1842 /* this reports xterm version 136 so that VIM can
1843 use the drag messages from the mouse reporting */
b9d7bcad 1844 if (term->ldisc)
1845 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
32874aea 1846 break;
5442e92f 1847 case 'a': /* move right N cols */
1848 compatibility(ANSI);
1849 /* FALLTHROUGH */
32874aea 1850 case 'C':
887035a5 1851 move(term, term->curs.x + def(term->esc_args[0], 1),
1852 term->curs.y, 1);
1853 term->seen_disp_event = TRUE;
32874aea 1854 break;
1855 case 'D': /* move left N cols */
887035a5 1856 move(term, term->curs.x - def(term->esc_args[0], 1),
1857 term->curs.y, 1);
1858 term->seen_disp_event = TRUE;
32874aea 1859 break;
1860 case 'E': /* move down N lines and CR */
1861 compatibility(ANSI);
887035a5 1862 move(term, 0,
1863 term->curs.y + def(term->esc_args[0], 1), 1);
1864 term->seen_disp_event = TRUE;
32874aea 1865 break;
1866 case 'F': /* move up N lines and CR */
1867 compatibility(ANSI);
887035a5 1868 move(term, 0,
1869 term->curs.y - def(term->esc_args[0], 1), 1);
1870 term->seen_disp_event = TRUE;
32874aea 1871 break;
1872 case 'G':
1873 case '`': /* set horizontal posn */
1874 compatibility(ANSI);
887035a5 1875 move(term, def(term->esc_args[0], 1) - 1,
1876 term->curs.y, 0);
1877 term->seen_disp_event = TRUE;
32874aea 1878 break;
1879 case 'd': /* set vertical posn */
1880 compatibility(ANSI);
887035a5 1881 move(term, term->curs.x,
1882 ((term->dec_om ? term->marg_t : 0) +
1883 def(term->esc_args[0], 1) - 1),
1884 (term->dec_om ? 2 : 0));
1885 term->seen_disp_event = TRUE;
32874aea 1886 break;
1887 case 'H':
1888 case 'f': /* set horz and vert posns at once */
887035a5 1889 if (term->esc_nargs < 2)
1890 term->esc_args[1] = ARG_DEFAULT;
1891 move(term, def(term->esc_args[1], 1) - 1,
1892 ((term->dec_om ? term->marg_t : 0) +
1893 def(term->esc_args[0], 1) - 1),
1894 (term->dec_om ? 2 : 0));
1895 term->seen_disp_event = TRUE;
32874aea 1896 break;
1897 case 'J': /* erase screen or parts of it */
1898 {
887035a5 1899 unsigned int i = def(term->esc_args[0], 0) + 1;
32874aea 1900 if (i > 3)
1901 i = 0;
887035a5 1902 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
32874aea 1903 }
887035a5 1904 term->disptop = 0;
1905 term->seen_disp_event = TRUE;
32874aea 1906 break;
1907 case 'K': /* erase line or parts of it */
1908 {
887035a5 1909 unsigned int i = def(term->esc_args[0], 0) + 1;
32874aea 1910 if (i > 3)
1911 i = 0;
887035a5 1912 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
32874aea 1913 }
887035a5 1914 term->seen_disp_event = TRUE;
32874aea 1915 break;
1916 case 'L': /* insert lines */
1917 compatibility(VT102);
887035a5 1918 if (term->curs.y <= term->marg_b)
1919 scroll(term, term->curs.y, term->marg_b,
1920 -def(term->esc_args[0], 1), FALSE);
32874aea 1921 fix_cpos;
887035a5 1922 term->seen_disp_event = TRUE;
32874aea 1923 break;
1924 case 'M': /* delete lines */
1925 compatibility(VT102);
887035a5 1926 if (term->curs.y <= term->marg_b)
1927 scroll(term, term->curs.y, term->marg_b,
1928 def(term->esc_args[0], 1),
32874aea 1929 TRUE);
1930 fix_cpos;
887035a5 1931 term->seen_disp_event = TRUE;
32874aea 1932 break;
1933 case '@': /* insert chars */
1934 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1935 compatibility(VT102);
887035a5 1936 insch(term, def(term->esc_args[0], 1));
1937 term->seen_disp_event = TRUE;
32874aea 1938 break;
1939 case 'P': /* delete chars */
1940 compatibility(VT102);
887035a5 1941 insch(term, -def(term->esc_args[0], 1));
1942 term->seen_disp_event = TRUE;
32874aea 1943 break;
1944 case 'c': /* terminal type query */
1945 compatibility(VT100);
1946 /* This is the response for a VT102 */
b9d7bcad 1947 if (term->ldisc)
1948 ldisc_send(term->ldisc, term->id_string,
1949 strlen(term->id_string), 0);
32874aea 1950 break;
1951 case 'n': /* cursor position query */
b9d7bcad 1952 if (term->ldisc) {
1953 if (term->esc_args[0] == 6) {
1954 char buf[32];
1955 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
1956 term->curs.x + 1);
1957 ldisc_send(term->ldisc, buf, strlen(buf), 0);
1958 } else if (term->esc_args[0] == 5) {
1959 ldisc_send(term->ldisc, "\033[0n", 4, 0);
1960 }
32874aea 1961 }
1962 break;
1963 case 'h': /* toggle modes to high */
1964 case ANSI_QUE('h'):
1965 compatibility(VT100);
1966 {
1967 int i;
887035a5 1968 for (i = 0; i < term->esc_nargs; i++)
1969 toggle_mode(term, term->esc_args[i],
1970 term->esc_query, TRUE);
32874aea 1971 }
1972 break;
b44b307a 1973 case 'i':
1974 case ANSI_QUE('i'):
1975 compatibility(VT100);
1976 {
887035a5 1977 if (term->esc_nargs != 1) break;
f6b14226 1978 if (term->esc_args[0] == 5 && *term->cfg->printer) {
887035a5 1979 term->printing = TRUE;
1980 term->only_printing = !term->esc_query;
1981 term->print_state = 0;
1982 term_print_setup(term);
1983 } else if (term->esc_args[0] == 4 &&
1984 term->printing) {
1985 term_print_finish(term);
b44b307a 1986 }
1987 }
1988 break;
32874aea 1989 case 'l': /* toggle modes to low */
1990 case ANSI_QUE('l'):
1991 compatibility(VT100);
1992 {
1993 int i;
887035a5 1994 for (i = 0; i < term->esc_nargs; i++)
1995 toggle_mode(term, term->esc_args[i],
1996 term->esc_query, FALSE);
32874aea 1997 }
1998 break;
1999 case 'g': /* clear tabs */
2000 compatibility(VT100);
887035a5 2001 if (term->esc_nargs == 1) {
2002 if (term->esc_args[0] == 0) {
2003 term->tabs[term->curs.x] = FALSE;
2004 } else if (term->esc_args[0] == 3) {
32874aea 2005 int i;
887035a5 2006 for (i = 0; i < term->cols; i++)
2007 term->tabs[i] = FALSE;
32874aea 2008 }
2009 }
2010 break;
2011 case 'r': /* set scroll margins */
2012 compatibility(VT100);
887035a5 2013 if (term->esc_nargs <= 2) {
32874aea 2014 int top, bot;
887035a5 2015 top = def(term->esc_args[0], 1) - 1;
2016 bot = (term->esc_nargs <= 1
2017 || term->esc_args[1] == 0 ?
2018 term->rows :
2019 def(term->esc_args[1], term->rows)) - 1;
2020 if (bot >= term->rows)
2021 bot = term->rows - 1;
32874aea 2022 /* VTTEST Bug 9 - if region is less than 2 lines
2023 * don't change region.
2024 */
2025 if (bot - top > 0) {
887035a5 2026 term->marg_t = top;
2027 term->marg_b = bot;
2028 term->curs.x = 0;
32874aea 2029 /*
2030 * I used to think the cursor should be
2031 * placed at the top of the newly marginned
2032 * area. Apparently not: VMS TPU falls over
2033 * if so.
2034 *
887035a5 2035 * Well actually it should for
2036 * Origin mode - RDB
32874aea 2037 */
887035a5 2038 term->curs.y = (term->dec_om ?
2039 term->marg_t : 0);
32874aea 2040 fix_cpos;
887035a5 2041 term->seen_disp_event = TRUE;
32874aea 2042 }
2043 }
2044 break;
2045 case 'm': /* set graphics rendition */
2046 {
2047 /*
887035a5 2048 * A VT100 without the AVO only had one
2049 * attribute, either underline or
2050 * reverse video depending on the
2051 * cursor type, this was selected by
2052 * CSI 7m.
32874aea 2053 *
2054 * case 2:
887035a5 2055 * This is sometimes DIM, eg on the
2056 * GIGI and Linux
32874aea 2057 * case 8:
4eeb7d09 2058 * This is sometimes INVIS various ANSI.
32874aea 2059 * case 21:
2060 * This like 22 disables BOLD, DIM and INVIS
2061 *
887035a5 2062 * The ANSI colours appear on any
2063 * terminal that has colour (obviously)
2064 * but the interaction between sgr0 and
2065 * the colours varies but is usually
2066 * related to the background colour
2067 * erase item. The interaction between
2068 * colour attributes and the mono ones
2069 * is also very implementation
2070 * dependent.
32874aea 2071 *
887035a5 2072 * The 39 and 49 attributes are likely
2073 * to be unimplemented.
32874aea 2074 */
2075 int i;
887035a5 2076 for (i = 0; i < term->esc_nargs; i++) {
2077 switch (def(term->esc_args[i], 0)) {
32874aea 2078 case 0: /* restore defaults */
887035a5 2079 term->curr_attr = ATTR_DEFAULT;
32874aea 2080 break;
2081 case 1: /* enable bold */
2082 compatibility(VT100AVO);
887035a5 2083 term->curr_attr |= ATTR_BOLD;
32874aea 2084 break;
2085 case 21: /* (enable double underline) */
2086 compatibility(OTHER);
2087 case 4: /* enable underline */
2088 compatibility(VT100AVO);
887035a5 2089 term->curr_attr |= ATTR_UNDER;
32874aea 2090 break;
2091 case 5: /* enable blink */
2092 compatibility(VT100AVO);
887035a5 2093 term->curr_attr |= ATTR_BLINK;
32874aea 2094 break;
2095 case 7: /* enable reverse video */
887035a5 2096 term->curr_attr |= ATTR_REVERSE;
32874aea 2097 break;
d3cb5465 2098 case 10: /* SCO acs off */
2099 compatibility(SCOANSI);
f6b14226 2100 if (term->cfg->no_remote_charset) break;
887035a5 2101 term->sco_acs = 0; break;
d3cb5465 2102 case 11: /* SCO acs on */
2103 compatibility(SCOANSI);
f6b14226 2104 if (term->cfg->no_remote_charset) break;
887035a5 2105 term->sco_acs = 1; break;
5dc6132d 2106 case 12: /* SCO acs on, |0x80 */
d3cb5465 2107 compatibility(SCOANSI);
f6b14226 2108 if (term->cfg->no_remote_charset) break;
887035a5 2109 term->sco_acs = 2; break;
32874aea 2110 case 22: /* disable bold */
2111 compatibility2(OTHER, VT220);
887035a5 2112 term->curr_attr &= ~ATTR_BOLD;
32874aea 2113 break;
2114 case 24: /* disable underline */
2115 compatibility2(OTHER, VT220);
887035a5 2116 term->curr_attr &= ~ATTR_UNDER;
32874aea 2117 break;
2118 case 25: /* disable blink */
2119 compatibility2(OTHER, VT220);
887035a5 2120 term->curr_attr &= ~ATTR_BLINK;
32874aea 2121 break;
2122 case 27: /* disable reverse video */
2123 compatibility2(OTHER, VT220);
887035a5 2124 term->curr_attr &= ~ATTR_REVERSE;
32874aea 2125 break;
2126 case 30:
2127 case 31:
2128 case 32:
2129 case 33:
2130 case 34:
2131 case 35:
2132 case 36:
2133 case 37:
2134 /* foreground */
887035a5 2135 term->curr_attr &= ~ATTR_FGMASK;
2136 term->curr_attr |=
2137 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
32874aea 2138 break;
2139 case 39: /* default-foreground */
887035a5 2140 term->curr_attr &= ~ATTR_FGMASK;
2141 term->curr_attr |= ATTR_DEFFG;
32874aea 2142 break;
2143 case 40:
2144 case 41:
2145 case 42:
2146 case 43:
2147 case 44:
2148 case 45:
2149 case 46:
2150 case 47:
2151 /* background */
887035a5 2152 term->curr_attr &= ~ATTR_BGMASK;
2153 term->curr_attr |=
2154 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
32874aea 2155 break;
2156 case 49: /* default-background */
887035a5 2157 term->curr_attr &= ~ATTR_BGMASK;
2158 term->curr_attr |= ATTR_DEFBG;
32874aea 2159 break;
2160 }
2161 }
887035a5 2162 if (term->use_bce)
2163 term->erase_char = (' ' | ATTR_ASCII |
2164 (term->curr_attr &
2165 (ATTR_FGMASK |
2166 ATTR_BGMASK)));
32874aea 2167 }
2168 break;
2169 case 's': /* save cursor */
887035a5 2170 save_cursor(term, TRUE);
32874aea 2171 break;
2172 case 'u': /* restore cursor */
887035a5 2173 save_cursor(term, FALSE);
2174 term->seen_disp_event = TRUE;
32874aea 2175 break;
2176 case 't': /* set page size - ie window height */
374330e2 2177 /*
32874aea 2178 * VT340/VT420 sequence DECSLPP, DEC only allows values
2179 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2180 * illegal values (eg first arg 1..9) for window changing
2181 * and reports.
2182 */
887035a5 2183 if (term->esc_nargs <= 1
2184 && (term->esc_args[0] < 1 ||
2185 term->esc_args[0] >= 24)) {
68f9b3d9 2186 compatibility(VT340TEXT);
f6b14226 2187 if (!term->cfg->no_remote_resize)
a8327734 2188 request_resize(term->frontend, term->cols,
887035a5 2189 def(term->esc_args[0], 24));
2190 deselect(term);
2191 } else if (term->esc_nargs >= 1 &&
2192 term->esc_args[0] >= 1 &&
2193 term->esc_args[0] < 24) {
68f9b3d9 2194 compatibility(OTHER);
2195
887035a5 2196 switch (term->esc_args[0]) {
68f9b3d9 2197 int x, y, len;
2198 char buf[80], *p;
2199 case 1:
a8327734 2200 set_iconic(term->frontend, FALSE);
68f9b3d9 2201 break;
2202 case 2:
a8327734 2203 set_iconic(term->frontend, TRUE);
68f9b3d9 2204 break;
2205 case 3:
887035a5 2206 if (term->esc_nargs >= 3) {
f6b14226 2207 if (!term->cfg->no_remote_resize)
a8327734 2208 move_window(term->frontend,
2209 def(term->esc_args[1], 0),
887035a5 2210 def(term->esc_args[2], 0));
68f9b3d9 2211 }
2212 break;
2213 case 4:
2214 /* We should resize the window to a given
2215 * size in pixels here, but currently our
2216 * resizing code isn't healthy enough to
2217 * manage it. */
2218 break;
2219 case 5:
a8327734 2220 /* move to top */
2221 set_zorder(term->frontend, TRUE);
68f9b3d9 2222 break;
2223 case 6:
a8327734 2224 /* move to bottom */
2225 set_zorder(term->frontend, FALSE);
68f9b3d9 2226 break;
2227 case 7:
a8327734 2228 refresh_window(term->frontend);
68f9b3d9 2229 break;
2230 case 8:
887035a5 2231 if (term->esc_nargs >= 3) {
f6b14226 2232 if (!term->cfg->no_remote_resize)
a8327734 2233 request_resize(term->frontend,
f6b14226 2234 def(term->esc_args[2], term->cfg->width),
2235 def(term->esc_args[1], term->cfg->height));
68f9b3d9 2236 }
2237 break;
2238 case 9:
887035a5 2239 if (term->esc_nargs >= 2)
a8327734 2240 set_zoomed(term->frontend,
2241 term->esc_args[1] ?
887035a5 2242 TRUE : FALSE);
68f9b3d9 2243 break;
2244 case 11:
b9d7bcad 2245 if (term->ldisc)
2246 ldisc_send(term->ldisc,
a8327734 2247 is_iconic(term->frontend) ?
2248 "\033[1t" : "\033[2t", 4, 0);
68f9b3d9 2249 break;
2250 case 13:
b9d7bcad 2251 if (term->ldisc) {
a8327734 2252 get_window_pos(term->frontend, &x, &y);
b9d7bcad 2253 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2254 ldisc_send(term->ldisc, buf, len, 0);
2255 }
68f9b3d9 2256 break;
2257 case 14:
b9d7bcad 2258 if (term->ldisc) {
a8327734 2259 get_window_pixels(term->frontend, &x, &y);
b9d7bcad 2260 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2261 ldisc_send(term->ldisc, buf, len, 0);
2262 }
68f9b3d9 2263 break;
2264 case 18:
b9d7bcad 2265 if (term->ldisc) {
2266 len = sprintf(buf, "\033[8;%d;%dt",
2267 term->rows, term->cols);
2268 ldisc_send(term->ldisc, buf, len, 0);
2269 }
68f9b3d9 2270 break;
2271 case 19:
2272 /*
2273 * Hmmm. Strictly speaking we
2274 * should return `the size of the
2275 * screen in characters', but
2276 * that's not easy: (a) window
2277 * furniture being what it is it's
2278 * hard to compute, and (b) in
2279 * resize-font mode maximising the
2280 * window wouldn't change the
2281 * number of characters. *shrug*. I
2282 * think we'll ignore it for the
2283 * moment and see if anyone
2284 * complains, and then ask them
2285 * what they would like it to do.
2286 */
2287 break;
2288 case 20:
b9d7bcad 2289 if (term->ldisc) {
a8327734 2290 p = get_window_title(term->frontend, TRUE);
b9d7bcad 2291 len = strlen(p);
2292 ldisc_send(term->ldisc, "\033]L", 3, 0);
2293 ldisc_send(term->ldisc, p, len, 0);
2294 ldisc_send(term->ldisc, "\033\\", 2, 0);
2295 }
68f9b3d9 2296 break;
2297 case 21:
b9d7bcad 2298 if (term->ldisc) {
a8327734 2299 p = get_window_title(term->frontend,FALSE);
b9d7bcad 2300 len = strlen(p);
2301 ldisc_send(term->ldisc, "\033]l", 3, 0);
2302 ldisc_send(term->ldisc, p, len, 0);
2303 ldisc_send(term->ldisc, "\033\\", 2, 0);
2304 }
68f9b3d9 2305 break;
2306 }
32874aea 2307 }
2308 break;
1a837633 2309 case 'S':
2310 compatibility(SCOANSI);
887035a5 2311 scroll(term, term->marg_t, term->marg_b,
2312 def(term->esc_args[0], 1), TRUE);
1a837633 2313 fix_cpos;
887035a5 2314 term->wrapnext = FALSE;
2315 term->seen_disp_event = TRUE;
1a837633 2316 break;
2317 case 'T':
2318 compatibility(SCOANSI);
887035a5 2319 scroll(term, term->marg_t, term->marg_b,
2320 -def(term->esc_args[0], 1), TRUE);
1a837633 2321 fix_cpos;
887035a5 2322 term->wrapnext = FALSE;
2323 term->seen_disp_event = TRUE;
1a837633 2324 break;
32874aea 2325 case ANSI('|', '*'):
2326 /* VT420 sequence DECSNLS
2327 * Set number of lines on screen
2328 * VT420 uses VGA like hardware and can support any size in
2329 * reasonable range (24..49 AIUI) with no default specified.
2330 */
2331 compatibility(VT420);
887035a5 2332 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
f6b14226 2333 if (!term->cfg->no_remote_resize)
a8327734 2334 request_resize(term->frontend, term->cols,
887035a5 2335 def(term->esc_args[0],
f6b14226 2336 term->cfg->height));
887035a5 2337 deselect(term);
32874aea 2338 }
2339 break;
2340 case ANSI('|', '$'):
2341 /* VT340/VT420 sequence DECSCPP
2342 * Set number of columns per page
2343 * Docs imply range is only 80 or 132, but I'll allow any.
2344 */
2345 compatibility(VT340TEXT);
887035a5 2346 if (term->esc_nargs <= 1) {
f6b14226 2347 if (!term->cfg->no_remote_resize)
a8327734 2348 request_resize(term->frontend,
2349 def(term->esc_args[0],
f6b14226 2350 term->cfg->width), term->rows);
887035a5 2351 deselect(term);
32874aea 2352 }
2353 break;
2354 case 'X': /* write N spaces w/o moving cursor */
2355 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2356 compatibility(ANSIMIN);
2357 {
887035a5 2358 int n = def(term->esc_args[0], 1);
32874aea 2359 pos cursplus;
887035a5 2360 unsigned long *p = term->cpos;
2361 if (n > term->cols - term->curs.x)
2362 n = term->cols - term->curs.x;
2363 cursplus = term->curs;
32874aea 2364 cursplus.x += n;
887035a5 2365 check_selection(term, term->curs, cursplus);
32874aea 2366 while (n--)
887035a5 2367 *p++ = term->erase_char;
2368 term->seen_disp_event = TRUE;
32874aea 2369 }
2370 break;
2371 case 'x': /* report terminal characteristics */
2372 compatibility(VT100);
b9d7bcad 2373 if (term->ldisc) {
32874aea 2374 char buf[32];
887035a5 2375 int i = def(term->esc_args[0], 0);
32874aea 2376 if (i == 0 || i == 1) {
2377 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2378 buf[2] += i;
b9d7bcad 2379 ldisc_send(term->ldisc, buf, 20, 0);
32874aea 2380 }
2381 }
2382 break;
979f6987 2383 case 'Z': /* BackTab for xterm */
2384 compatibility(OTHER);
2385 {
887035a5 2386 int i = def(term->esc_args[0], 1);
2387 pos old_curs = term->curs;
979f6987 2388
887035a5 2389 for(;i>0 && term->curs.x>0; i--) {
979f6987 2390 do {
887035a5 2391 term->curs.x--;
2392 } while (term->curs.x >0 &&
2393 !term->tabs[term->curs.x]);
979f6987 2394 }
2395 fix_cpos;
887035a5 2396 check_selection(term, old_curs, term->curs);
979f6987 2397 }
2398 break;
32874aea 2399 case ANSI('L', '='):
2400 compatibility(OTHER);
887035a5 2401 term->use_bce = (term->esc_args[0] <= 0);
2402 term->erase_char = ERASE_CHAR;
2403 if (term->use_bce)
2404 term->erase_char = (' ' | ATTR_ASCII |
2405 (term->curr_attr &
2406 (ATTR_FGMASK | ATTR_BGMASK)));
32874aea 2407 break;
2408 case ANSI('E', '='):
2409 compatibility(OTHER);
887035a5 2410 term->blink_is_real = (term->esc_args[0] >= 1);
32874aea 2411 break;
2412 case ANSI('p', '"'):
887035a5 2413 /*
2414 * Allow the host to make this emulator a
2415 * 'perfect' VT102. This first appeared in
2416 * the VT220, but we do need to get back to
2417 * PuTTY mode so I won't check it.
e14a5a13 2418 *
4eeb7d09 2419 * The arg in 40..42,50 are a PuTTY extension.
32874aea 2420 * The 2nd arg, 8bit vs 7bit is not checked.
2421 *
887035a5 2422 * Setting VT102 mode should also change
2423 * the Fkeys to generate PF* codes as a
2424 * real VT102 has no Fkeys. The VT220 does
2425 * this, F11..F13 become ESC,BS,LF other
2426 * Fkeys send nothing.
32874aea 2427 *
2428 * Note ESC c will NOT change this!
374330e2 2429 */
32874aea 2430
887035a5 2431 switch (term->esc_args[0]) {
32874aea 2432 case 61:
887035a5 2433 term->compatibility_level &= ~TM_VTXXX;
2434 term->compatibility_level |= TM_VT102;
374330e2 2435 break;
32874aea 2436 case 62:
887035a5 2437 term->compatibility_level &= ~TM_VTXXX;
2438 term->compatibility_level |= TM_VT220;
32874aea 2439 break;
2440
2441 default:
887035a5 2442 if (term->esc_args[0] > 60 &&
2443 term->esc_args[0] < 70)
2444 term->compatibility_level |= TM_VTXXX;
32874aea 2445 break;
2446
2447 case 40:
887035a5 2448 term->compatibility_level &= TM_VTXXX;
374330e2 2449 break;
32874aea 2450 case 41:
887035a5 2451 term->compatibility_level = TM_PUTTY;
374330e2 2452 break;
32874aea 2453 case 42:
887035a5 2454 term->compatibility_level = TM_SCOANSI;
374330e2 2455 break;
32874aea 2456
2457 case ARG_DEFAULT:
887035a5 2458 term->compatibility_level = TM_PUTTY;
32874aea 2459 break;
2460 case 50:
2461 break;
2462 }
2463
2464 /* Change the response to CSI c */
887035a5 2465 if (term->esc_args[0] == 50) {
32874aea 2466 int i;
2467 char lbuf[64];
887035a5 2468 strcpy(term->id_string, "\033[?");
2469 for (i = 1; i < term->esc_nargs; i++) {
32874aea 2470 if (i != 1)
887035a5 2471 strcat(term->id_string, ";");
2472 sprintf(lbuf, "%d", term->esc_args[i]);
2473 strcat(term->id_string, lbuf);
32874aea 2474 }
887035a5 2475 strcat(term->id_string, "c");
32874aea 2476 }
2477#if 0
2478 /* Is this a good idea ?
2479 * Well we should do a soft reset at this point ...
2480 */
2481 if (!has_compat(VT420) && has_compat(VT100)) {
f6b14226 2482 if (!term->cfg->no_remote_resize) {
887035a5 2483 if (term->reset_132)
0d2086c5 2484 request_resize(132, 24);
2485 else
2486 request_resize(80, 24);
2487 }
374330e2 2488 }
32874aea 2489#endif
2490 break;
374330e2 2491 }
374330e2 2492 break;
32874aea 2493 case SEEN_OSC:
887035a5 2494 term->osc_w = FALSE;
32874aea 2495 switch (c) {
2496 case 'P': /* Linux palette sequence */
887035a5 2497 term->termstate = SEEN_OSC_P;
2498 term->osc_strlen = 0;
32874aea 2499 break;
2500 case 'R': /* Linux palette reset */
a8327734 2501 palette_reset(term->frontend);
887035a5 2502 term_invalidate(term);
2503 term->termstate = TOPLEVEL;
32874aea 2504 break;
2505 case 'W': /* word-set */
887035a5 2506 term->termstate = SEEN_OSC_W;
2507 term->osc_w = TRUE;
32874aea 2508 break;
2509 case '0':
2510 case '1':
2511 case '2':
2512 case '3':
2513 case '4':
2514 case '5':
2515 case '6':
2516 case '7':
2517 case '8':
2518 case '9':
887035a5 2519 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
32874aea 2520 break;
2521 case 'L':
2522 /*
2523 * Grotty hack to support xterm and DECterm title
2524 * sequences concurrently.
2525 */
887035a5 2526 if (term->esc_args[0] == 2) {
2527 term->esc_args[0] = 1;
32874aea 2528 break;
2529 }
2530 /* else fall through */
2531 default:
887035a5 2532 term->termstate = OSC_STRING;
2533 term->osc_strlen = 0;
e14a5a13 2534 }
2535 break;
32874aea 2536 case OSC_STRING:
2537 /*
2538 * This OSC stuff is EVIL. It takes just one character to get into
2539 * sysline mode and it's not initially obvious how to get out.
2540 * So I've added CR and LF as string aborts.
2541 * This shouldn't effect compatibility as I believe embedded
2542 * control characters are supposed to be interpreted (maybe?)
2543 * and they don't display anything useful anyway.
2544 *
2545 * -- RDB
e14a5a13 2546 */
92e23ad9 2547 if (c == '\012' || c == '\015') {
887035a5 2548 term->termstate = TOPLEVEL;
32874aea 2549 } else if (c == 0234 || c == '\007') {
2550 /*
2551 * These characters terminate the string; ST and BEL
2552 * terminate the sequence and trigger instant
2553 * processing of it, whereas ESC goes back to SEEN_ESC
2554 * mode unless it is followed by \, in which case it is
2555 * synonymous with ST in the first place.
2556 */
887035a5 2557 do_osc(term);
2558 term->termstate = TOPLEVEL;
32874aea 2559 } else if (c == '\033')
887035a5 2560 term->termstate = OSC_MAYBE_ST;
2561 else if (term->osc_strlen < OSC_STR_MAX)
2562 term->osc_string[term->osc_strlen++] = c;
374330e2 2563 break;
32874aea 2564 case SEEN_OSC_P:
374330e2 2565 {
887035a5 2566 int max = (term->osc_strlen == 0 ? 21 : 16);
32874aea 2567 int val;
2568 if (c >= '0' && c <= '9')
2569 val = c - '0';
2570 else if (c >= 'A' && c <= 'A' + max - 10)
2571 val = c - 'A' + 10;
2572 else if (c >= 'a' && c <= 'a' + max - 10)
2573 val = c - 'a' + 10;
2d466ffd 2574 else {
887035a5 2575 term->termstate = TOPLEVEL;
2d466ffd 2576 break;
2577 }
887035a5 2578 term->osc_string[term->osc_strlen++] = val;
2579 if (term->osc_strlen >= 7) {
a8327734 2580 palette_set(term->frontend, term->osc_string[0],
887035a5 2581 term->osc_string[1] * 16 + term->osc_string[2],
2582 term->osc_string[3] * 16 + term->osc_string[4],
2583 term->osc_string[5] * 16 + term->osc_string[6]);
2584 term_invalidate(term);
2585 term->termstate = TOPLEVEL;
374330e2 2586 }
2587 }
2588 break;
32874aea 2589 case SEEN_OSC_W:
2590 switch (c) {
2591 case '0':
2592 case '1':
2593 case '2':
2594 case '3':
2595 case '4':
2596 case '5':
2597 case '6':
2598 case '7':
2599 case '8':
2600 case '9':
887035a5 2601 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
32874aea 2602 break;
2603 default:
887035a5 2604 term->termstate = OSC_STRING;
2605 term->osc_strlen = 0;
ec55b220 2606 }
32874aea 2607 break;
32874aea 2608 case VT52_ESC:
887035a5 2609 term->termstate = TOPLEVEL;
2610 term->seen_disp_event = TRUE;
c9def1b8 2611 switch (c) {
32874aea 2612 case 'A':
887035a5 2613 move(term, term->curs.x, term->curs.y - 1, 1);
32874aea 2614 break;
2615 case 'B':
887035a5 2616 move(term, term->curs.x, term->curs.y + 1, 1);
32874aea 2617 break;
2618 case 'C':
887035a5 2619 move(term, term->curs.x + 1, term->curs.y, 1);
32874aea 2620 break;
2621 case 'D':
887035a5 2622 move(term, term->curs.x - 1, term->curs.y, 1);
32874aea 2623 break;
4eeb7d09 2624 /*
2625 * From the VT100 Manual
2626 * NOTE: The special graphics characters in the VT100
2627 * are different from those in the VT52
2628 *
2629 * From VT102 manual:
2630 * 137 _ Blank - Same
2631 * 140 ` Reserved - Humm.
2632 * 141 a Solid rectangle - Similar
2633 * 142 b 1/ - Top half of fraction for the
2634 * 143 c 3/ - subscript numbers below.
2635 * 144 d 5/
2636 * 145 e 7/
2637 * 146 f Degrees - Same
2638 * 147 g Plus or minus - Same
2639 * 150 h Right arrow
2640 * 151 i Ellipsis (dots)
2641 * 152 j Divide by
2642 * 153 k Down arrow
2643 * 154 l Bar at scan 0
2644 * 155 m Bar at scan 1
2645 * 156 n Bar at scan 2
2646 * 157 o Bar at scan 3 - Similar
2647 * 160 p Bar at scan 4 - Similar
2648 * 161 q Bar at scan 5 - Similar
2649 * 162 r Bar at scan 6 - Same
2650 * 163 s Bar at scan 7 - Similar
2651 * 164 t Subscript 0
2652 * 165 u Subscript 1
2653 * 166 v Subscript 2
2654 * 167 w Subscript 3
2655 * 170 x Subscript 4
2656 * 171 y Subscript 5
2657 * 172 z Subscript 6
2658 * 173 { Subscript 7
2659 * 174 | Subscript 8
2660 * 175 } Subscript 9
2661 * 176 ~ Paragraph
2662 *
2663 */
32874aea 2664 case 'F':
887035a5 2665 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
32874aea 2666 break;
2667 case 'G':
887035a5 2668 term->cset_attr[term->cset = 0] = ATTR_ASCII;
32874aea 2669 break;
2670 case 'H':
887035a5 2671 move(term, 0, 0, 0);
32874aea 2672 break;
2673 case 'I':
887035a5 2674 if (term->curs.y == 0)
2675 scroll(term, 0, term->rows - 1, -1, TRUE);
2676 else if (term->curs.y > 0)
2677 term->curs.y--;
32874aea 2678 fix_cpos;
887035a5 2679 term->wrapnext = FALSE;
32874aea 2680 break;
2681 case 'J':
887035a5 2682 erase_lots(term, FALSE, FALSE, TRUE);
2683 term->disptop = 0;
c9def1b8 2684 break;
32874aea 2685 case 'K':
887035a5 2686 erase_lots(term, TRUE, FALSE, TRUE);
32874aea 2687 break;
4eeb7d09 2688#if 0
32874aea 2689 case 'V':
2690 /* XXX Print cursor line */
2691 break;
2692 case 'W':
2693 /* XXX Start controller mode */
2694 break;
2695 case 'X':
2696 /* XXX Stop controller mode */
2697 break;
4eeb7d09 2698#endif
32874aea 2699 case 'Y':
887035a5 2700 term->termstate = VT52_Y1;
32874aea 2701 break;
2702 case 'Z':
b9d7bcad 2703 if (term->ldisc)
2704 ldisc_send(term->ldisc, "\033/Z", 3, 0);
32874aea 2705 break;
2706 case '=':
887035a5 2707 term->app_keypad_keys = TRUE;
32874aea 2708 break;
2709 case '>':
887035a5 2710 term->app_keypad_keys = FALSE;
32874aea 2711 break;
2712 case '<':
2713 /* XXX This should switch to VT100 mode not current or default
2714 * VT mode. But this will only have effect in a VT220+
2715 * emulation.
2716 */
887035a5 2717 term->vt52_mode = FALSE;
f6b14226 2718 term->blink_is_real = term->cfg->blinktext;
32874aea 2719 break;
4eeb7d09 2720#if 0
32874aea 2721 case '^':
2722 /* XXX Enter auto print mode */
2723 break;
2724 case '_':
2725 /* XXX Exit auto print mode */
2726 break;
2727 case ']':
2728 /* XXX Print screen */
2729 break;
4eeb7d09 2730#endif
2731
2732#ifdef VT52_PLUS
2733 case 'E':
2734 /* compatibility(ATARI) */
887035a5 2735 move(term, 0, 0, 0);
2736 erase_lots(term, FALSE, FALSE, TRUE);
2737 term->disptop = 0;
4eeb7d09 2738 break;
2739 case 'L':
2740 /* compatibility(ATARI) */
887035a5 2741 if (term->curs.y <= term->marg_b)
2742 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4eeb7d09 2743 break;
2744 case 'M':
2745 /* compatibility(ATARI) */
887035a5 2746 if (term->curs.y <= term->marg_b)
2747 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4eeb7d09 2748 break;
2749 case 'b':
2750 /* compatibility(ATARI) */
887035a5 2751 term->termstate = VT52_FG;
4eeb7d09 2752 break;
2753 case 'c':
2754 /* compatibility(ATARI) */
887035a5 2755 term->termstate = VT52_BG;
4eeb7d09 2756 break;
2757 case 'd':
2758 /* compatibility(ATARI) */
887035a5 2759 erase_lots(term, FALSE, TRUE, FALSE);
2760 term->disptop = 0;
4eeb7d09 2761 break;
2762 case 'e':
2763 /* compatibility(ATARI) */
887035a5 2764 term->cursor_on = TRUE;
4eeb7d09 2765 break;
2766 case 'f':
2767 /* compatibility(ATARI) */
887035a5 2768 term->cursor_on = FALSE;
4eeb7d09 2769 break;
2770 /* case 'j': Save cursor position - broken on ST */
2771 /* case 'k': Restore cursor position */
2772 case 'l':
2773 /* compatibility(ATARI) */
887035a5 2774 erase_lots(term, TRUE, TRUE, TRUE);
2775 term->curs.x = 0;
2776 term->wrapnext = FALSE;
4eeb7d09 2777 fix_cpos;
2778 break;
2779 case 'o':
2780 /* compatibility(ATARI) */
887035a5 2781 erase_lots(term, TRUE, TRUE, FALSE);
4eeb7d09 2782 break;
2783 case 'p':
2784 /* compatibility(ATARI) */
887035a5 2785 term->curr_attr |= ATTR_REVERSE;
4eeb7d09 2786 break;
2787 case 'q':
2788 /* compatibility(ATARI) */
887035a5 2789 term->curr_attr &= ~ATTR_REVERSE;
4eeb7d09 2790 break;
2791 case 'v': /* wrap Autowrap on - Wyse style */
2792 /* compatibility(ATARI) */
887035a5 2793 term->wrap = 1;
4eeb7d09 2794 break;
2795 case 'w': /* Autowrap off */
2796 /* compatibility(ATARI) */
887035a5 2797 term->wrap = 0;
4eeb7d09 2798 break;
2799
2800 case 'R':
2801 /* compatibility(OTHER) */
887035a5 2802 term->vt52_bold = FALSE;
2803 term->curr_attr = ATTR_DEFAULT;
2804 if (term->use_bce)
2805 term->erase_char = (' ' | ATTR_ASCII |
2806 (term->curr_attr &
2807 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 2808 break;
2809 case 'S':
2810 /* compatibility(VI50) */
887035a5 2811 term->curr_attr |= ATTR_UNDER;
4eeb7d09 2812 break;
2813 case 'W':
2814 /* compatibility(VI50) */
887035a5 2815 term->curr_attr &= ~ATTR_UNDER;
4eeb7d09 2816 break;
2817 case 'U':
2818 /* compatibility(VI50) */
887035a5 2819 term->vt52_bold = TRUE;
2820 term->curr_attr |= ATTR_BOLD;
4eeb7d09 2821 break;
2822 case 'T':
2823 /* compatibility(VI50) */
887035a5 2824 term->vt52_bold = FALSE;
2825 term->curr_attr &= ~ATTR_BOLD;
4eeb7d09 2826 break;
2827#endif
c9def1b8 2828 }
e14a5a13 2829 break;
32874aea 2830 case VT52_Y1:
887035a5 2831 term->termstate = VT52_Y2;
2832 move(term, term->curs.x, c - ' ', 0);
e14a5a13 2833 break;
32874aea 2834 case VT52_Y2:
887035a5 2835 term->termstate = TOPLEVEL;
2836 move(term, c - ' ', term->curs.y, 0);
e14a5a13 2837 break;
4eeb7d09 2838
2839#ifdef VT52_PLUS
2840 case VT52_FG:
887035a5 2841 term->termstate = TOPLEVEL;
2842 term->curr_attr &= ~ATTR_FGMASK;
2843 term->curr_attr &= ~ATTR_BOLD;
2844 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
2845 if ((c & 0x8) || term->vt52_bold)
2846 term->curr_attr |= ATTR_BOLD;
2847
2848 if (term->use_bce)
2849 term->erase_char = (' ' | ATTR_ASCII |
2850 (term->curr_attr &
2851 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 2852 break;
2853 case VT52_BG:
887035a5 2854 term->termstate = TOPLEVEL;
2855 term->curr_attr &= ~ATTR_BGMASK;
2856 term->curr_attr &= ~ATTR_BLINK;
2857 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
4eeb7d09 2858
2859 /* Note: bold background */
2860 if (c & 0x8)
887035a5 2861 term->curr_attr |= ATTR_BLINK;
4eeb7d09 2862
887035a5 2863 if (term->use_bce)
2864 term->erase_char = (' ' | ATTR_ASCII |
2865 (term->curr_attr &
2866 (ATTR_FGMASK | ATTR_BGMASK)));
4eeb7d09 2867 break;
2868#endif
2d466ffd 2869 default: break; /* placate gcc warning about enum use */
e14a5a13 2870 }
887035a5 2871 if (term->selstate != NO_SELECTION) {
2872 pos cursplus = term->curs;
4facdf84 2873 incpos(cursplus);
887035a5 2874 check_selection(term, term->curs, cursplus);
4facdf84 2875 }
374330e2 2876 }
b44b307a 2877
887035a5 2878 term_print_flush(term);
374330e2 2879}
2880
4eeb7d09 2881#if 0
374330e2 2882/*
2883 * Compare two lines to determine whether they are sufficiently
2884 * alike to scroll-optimise one to the other. Return the degree of
2885 * similarity.
2886 */
887035a5 2887static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
32874aea 2888{
374330e2 2889 int i, n;
2890
887035a5 2891 for (i = n = 0; i < term->cols; i++)
374330e2 2892 n += (*a++ == *b++);
2893 return n;
2894}
4eeb7d09 2895#endif
374330e2 2896
2897/*
2898 * Given a context, update the window. Out of paranoia, we don't
2899 * allow WM_PAINT responses to do scrolling optimisations.
2900 */
887035a5 2901static void do_paint(Terminal *term, Context ctx, int may_optimise)
32874aea 2902{
4eeb7d09 2903 int i, j, our_curs_y;
2904 unsigned long rv, cursor;
4facdf84 2905 pos scrpos;
374330e2 2906 char ch[1024];
4eeb7d09 2907 long cursor_background = ERASE_CHAR;
286c6b86 2908 unsigned long ticks;
374330e2 2909
156686ef 2910 /*
2911 * Check the visual bell state.
2912 */
887035a5 2913 if (term->in_vbell) {
f7f27309 2914 ticks = GETTICKCOUNT();
887035a5 2915 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
2916 term->in_vbell = FALSE;
286c6b86 2917 }
156686ef 2918
887035a5 2919 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4eeb7d09 2920
156686ef 2921 /* Depends on:
2922 * screen array, disptop, scrtop,
2923 * selection, rv,
2924 * cfg.blinkpc, blink_is_real, tblinker,
4eeb7d09 2925 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
156686ef 2926 */
4eeb7d09 2927
2928 /* Has the cursor position or type changed ? */
887035a5 2929 if (term->cursor_on) {
2930 if (term->has_focus) {
f6b14226 2931 if (term->blinker || !term->cfg->blink_cur)
4eeb7d09 2932 cursor = TATTR_ACTCURS;
32874aea 2933 else
2934 cursor = 0;
2935 } else
4eeb7d09 2936 cursor = TATTR_PASCURS;
887035a5 2937 if (term->wrapnext)
4eeb7d09 2938 cursor |= TATTR_RIGHTCURS;
32874aea 2939 } else
156686ef 2940 cursor = 0;
887035a5 2941 our_curs_y = term->curs.y - term->disptop;
2942
2943 if (term->dispcurs && (term->curstype != cursor ||
2944 term->dispcurs !=
2945 term->disptext + our_curs_y * (term->cols + 1) +
2946 term->curs.x)) {
2947 if (term->dispcurs > term->disptext &&
2948 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2949 term->dispcurs[-1] |= ATTR_INVALID;
2950 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2951 term->dispcurs[1] |= ATTR_INVALID;
2952 *term->dispcurs |= ATTR_INVALID;
2953 term->curstype = 0;
4eeb7d09 2954 }
887035a5 2955 term->dispcurs = NULL;
4eeb7d09 2956
2957 /* The normal screen data */
887035a5 2958 for (i = 0; i < term->rows; i++) {
4facdf84 2959 unsigned long *ldata;
2960 int lattr;
6908fed7 2961 int idx, dirty_line, dirty_run, selected;
4eeb7d09 2962 unsigned long attr = 0;
2963 int updated_line = 0;
2964 int start = 0;
2965 int ccount = 0;
2966 int last_run_dirty = 0;
2967
887035a5 2968 scrpos.y = i + term->disptop;
4facdf84 2969 ldata = lineptr(scrpos.y);
887035a5 2970 lattr = (ldata[term->cols] & LATTR_MODE);
4eeb7d09 2971
887035a5 2972 idx = i * (term->cols + 1);
2973 dirty_run = dirty_line = (ldata[term->cols] !=
2974 term->disptext[idx + term->cols]);
2975 term->disptext[idx + term->cols] = ldata[term->cols];
4eeb7d09 2976
887035a5 2977 for (j = 0; j < term->cols; j++, idx++) {
4eeb7d09 2978 unsigned long tattr, tchar;
2979 unsigned long *d = ldata + j;
2980 int break_run;
4facdf84 2981 scrpos.x = j;
32874aea 2982
4eeb7d09 2983 tchar = (*d & (CHAR_MASK | CSET_MASK));
2984 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
2985 switch (tchar & CSET_MASK) {
2986 case ATTR_ASCII:
2987 tchar = unitab_line[tchar & 0xFF];
2988 break;
2989 case ATTR_LINEDRW:
2990 tchar = unitab_xterm[tchar & 0xFF];
2991 break;
d3cb5465 2992 case ATTR_SCOACS:
2993 tchar = unitab_scoacs[tchar&0xFF];
2994 break;
4eeb7d09 2995 }
2996 tattr |= (tchar & CSET_MASK);
2997 tchar &= CHAR_MASK;
5a73255e 2998 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2999 tattr |= ATTR_WIDE;
4eeb7d09 3000
3001 /* Video reversing things */
f278d6f8 3002 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3003 if (term->seltype == LEXICOGRAPHIC)
3004 selected = (posle(term->selstart, scrpos) &&
3005 poslt(scrpos, term->selend));
3006 else
3007 selected = (posPle(term->selstart, scrpos) &&
3008 posPlt(scrpos, term->selend));
3009 } else
3010 selected = FALSE;
4eeb7d09 3011 tattr = (tattr ^ rv
6908fed7 3012 ^ (selected ? ATTR_REVERSE : 0));
4eeb7d09 3013
3014 /* 'Real' blinking ? */
887035a5 3015 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3016 if (term->has_focus && term->tblinker) {
4eeb7d09 3017 tchar = ' ';
3018 tattr &= ~CSET_MASK;
3019 tattr |= ATTR_ACP;
c9def1b8 3020 }
4eeb7d09 3021 tattr &= ~ATTR_BLINK;
c9def1b8 3022 }
374330e2 3023
5a73255e 3024 /*
3025 * Check the font we'll _probably_ be using to see if
3026 * the character is wide when we don't want it to be.
3027 */
887035a5 3028 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
5a73255e 3029 if ((tattr & ATTR_WIDE) == 0 &&
2102eb8a 3030 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
5a73255e 3031 tattr |= ATTR_NARROW;
887035a5 3032 } else if (term->disptext[idx]&ATTR_NARROW)
5a73255e 3033 tattr |= ATTR_NARROW;
3034
4eeb7d09 3035 /* Cursor here ? Save the 'background' */
887035a5 3036 if (i == our_curs_y && j == term->curs.x) {
4eeb7d09 3037 cursor_background = tattr | tchar;
887035a5 3038 term->dispcurs = term->disptext + idx;
4eeb7d09 3039 }
374330e2 3040
887035a5 3041 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
4eeb7d09 3042 dirty_line = TRUE;
3043
2647b103 3044 break_run = (((tattr ^ attr) & term->attr_mask) ||
3045 j - start >= sizeof(ch));
4eeb7d09 3046
3047 /* Special hack for VT100 Linedraw glyphs */
3048 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3049 && tchar <= 0xBD) break_run = TRUE;
3050
3051 if (!dbcs_screenfont && !dirty_line) {
887035a5 3052 if ((tchar | tattr) == term->disptext[idx])
4eeb7d09 3053 break_run = TRUE;
3054 else if (!dirty_run && ccount == 1)
3055 break_run = TRUE;
374330e2 3056 }
4eeb7d09 3057
3058 if (break_run) {
3059 if ((dirty_run || last_run_dirty) && ccount > 0) {
3060 do_text(ctx, start, i, ch, ccount, attr, lattr);
3061 updated_line = 1;
3062 }
3063 start = j;
3064 ccount = 0;
3065 attr = tattr;
3066 if (dbcs_screenfont)
3067 last_run_dirty = dirty_run;
3068 dirty_run = dirty_line;
3069 }
3070
887035a5 3071 if ((tchar | tattr) != term->disptext[idx])
4eeb7d09 3072 dirty_run = TRUE;
3073 ch[ccount++] = (char) tchar;
887035a5 3074 term->disptext[idx] = tchar | tattr;
4eeb7d09 3075
3076 /* If it's a wide char step along to the next one. */
3077 if (tattr & ATTR_WIDE) {
887035a5 3078 if (++j < term->cols) {
4eeb7d09 3079 idx++;
3080 d++;
3081 /* Cursor is here ? Ouch! */
887035a5 3082 if (i == our_curs_y && j == term->curs.x) {
4eeb7d09 3083 cursor_background = *d;
887035a5 3084 term->dispcurs = term->disptext + idx;
4eeb7d09 3085 }
887035a5 3086 if (term->disptext[idx] != *d)
4eeb7d09 3087 dirty_run = TRUE;
887035a5 3088 term->disptext[idx] = *d;
374330e2 3089 }
374330e2 3090 }
4eeb7d09 3091 }
3092 if (dirty_run && ccount > 0) {
3093 do_text(ctx, start, i, ch, ccount, attr, lattr);
3094 updated_line = 1;
3095 }
3096
3097 /* Cursor on this line ? (and changed) */
887035a5 3098 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
4eeb7d09 3099 ch[0] = (char) (cursor_background & CHAR_MASK);
3100 attr = (cursor_background & ATTR_MASK) | cursor;
887035a5 3101 do_cursor(ctx, term->curs.x, i, ch, 1, attr, lattr);
3102 term->curstype = cursor;
374330e2 3103 }
3104 }
3105}
3106
3107/*
e14a5a13 3108 * Flick the switch that says if blinking things should be shown or hidden.
3109 */
3110
887035a5 3111void term_blink(Terminal *term, int flg)
32874aea 3112{
e14a5a13 3113 long now, blink_diff;
3114
f7f27309 3115 now = GETTICKCOUNT();
887035a5 3116 blink_diff = now - term->last_tblink;
c9def1b8 3117
1d3989ed 3118 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3119 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
887035a5 3120 term->last_tblink = now;
3121 term->tblinker = !term->tblinker;
c9def1b8 3122 }
3123
e14a5a13 3124 if (flg) {
887035a5 3125 term->blinker = 1;
3126 term->last_blink = now;
e14a5a13 3127 return;
32874aea 3128 }
e14a5a13 3129
887035a5 3130 blink_diff = now - term->last_blink;
e14a5a13 3131
f7f27309 3132 /* Make sure the cursor blinks no faster than system blink rate */
3133 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
32874aea 3134 return;
3135
887035a5 3136 term->last_blink = now;
3137 term->blinker = !term->blinker;
e14a5a13 3138}
3139
3140/*
374330e2 3141 * Invalidate the whole screen so it will be repainted in full.
3142 */
887035a5 3143void term_invalidate(Terminal *term)
32874aea 3144{
374330e2 3145 int i;
3146
887035a5 3147 for (i = 0; i < term->rows * (term->cols + 1); i++)
3148 term->disptext[i] = ATTR_INVALID;
374330e2 3149}
3150
3151/*
3152 * Paint the window in response to a WM_PAINT message.
3153 */
887035a5 3154void term_paint(Terminal *term, Context ctx,
c1b55581 3155 int left, int top, int right, int bottom, int immediately)
32874aea 3156{
5a73255e 3157 int i, j;
3158 if (left < 0) left = 0;
3159 if (top < 0) top = 0;
887035a5 3160 if (right >= term->cols) right = term->cols-1;
3161 if (bottom >= term->rows) bottom = term->rows-1;
3162
3163 for (i = top; i <= bottom && i < term->rows; i++) {
3164 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3165 LATTR_MODE) == LATTR_NORM)
3166 for (j = left; j <= right && j < term->cols; j++)
3167 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
c9def1b8 3168 else
887035a5 3169 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3170 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
c9def1b8 3171 }
374330e2 3172
e14a5a13 3173 /* This should happen soon enough, also for some reason it sometimes
3174 * fails to actually do anything when re-sizing ... painting the wrong
3175 * window perhaps ?
32874aea 3176 */
c1b55581 3177 if (immediately)
887035a5 3178 do_paint (term, ctx, FALSE);
374330e2 3179}
3180
3181/*
3182 * Attempt to scroll the scrollback. The second parameter gives the
3183 * position we want to scroll to; the first is +1 to denote that
3184 * this position is relative to the beginning of the scrollback, -1
3185 * to denote it is relative to the end, and 0 to denote that it is
3186 * relative to the current position.
3187 */
887035a5 3188void term_scroll(Terminal *term, int rel, int where)
32874aea 3189{
887035a5 3190 int sbtop = -count234(term->scrollback);
37d2a505 3191#ifdef OPTIMISE_SCROLL
3192 int olddisptop = term->disptop;
3193 int shift;
3194#endif /* OPTIMISE_SCROLL */
887035a5 3195
3196 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3197 if (term->disptop < sbtop)
3198 term->disptop = sbtop;
3199 if (term->disptop > 0)
3200 term->disptop = 0;
3201 update_sbar(term);
37d2a505 3202#ifdef OPTIMISE_SCROLL
3203 shift = (term->disptop - olddisptop);
3204 if (shift < term->rows && shift > -term->rows)
3205 scroll_display(term, 0, term->rows - 1, shift);
3206#endif /* OPTIMISE_SCROLL */
887035a5 3207 term_update(term);
374330e2 3208}
3209
887035a5 3210static void clipme(Terminal *term, pos top, pos bottom, int rect)
32874aea 3211{
4eeb7d09 3212 wchar_t *workbuf;
3213 wchar_t *wbptr; /* where next char goes within workbuf */
6908fed7 3214 int old_top_x;
32874aea 3215 int wblen = 0; /* workbuf len */
3216 int buflen; /* amount of memory allocated to workbuf */
bc1235d4 3217
4eeb7d09 3218 buflen = 5120; /* Default size */
3219 workbuf = smalloc(buflen * sizeof(wchar_t));
3220 wbptr = workbuf; /* start filling here */
6908fed7 3221 old_top_x = top.x; /* needed for rect==1 */
bc1235d4 3222
4facdf84 3223 while (poslt(top, bottom)) {
bc1235d4 3224 int nl = FALSE;
4facdf84 3225 unsigned long *ldata = lineptr(top.y);
260f3dec 3226 pos nlpos;
4facdf84 3227
6908fed7 3228 /*
3229 * nlpos will point at the maximum position on this line we
3230 * should copy up to. So we start it at the end of the
3231 * line...
3232 */
4facdf84 3233 nlpos.y = top.y;
887035a5 3234 nlpos.x = term->cols;
bc1235d4 3235
6908fed7 3236 /*
3237 * ... move it backwards if there's unused space at the end
3238 * of the line (and also set `nl' if this is the case,
3239 * because in normal selection mode this means we need a
3240 * newline at the end)...
3241 */
887035a5 3242 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
4eeb7d09 3243 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3244 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3245 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3246 && poslt(top, nlpos))
3247 decpos(nlpos);
4facdf84 3248 if (poslt(nlpos, bottom))
bc1235d4 3249 nl = TRUE;
3250 }
6908fed7 3251
3252 /*
3253 * ... and then clip it to the terminal x coordinate if
3254 * we're doing rectangular selection. (In this case we
3255 * still did the above, so that copying e.g. the right-hand
3256 * column from a table doesn't fill with spaces on the
3257 * right.)
3258 */
3259 if (rect) {
3260 if (nlpos.x > bottom.x)
3261 nlpos.x = bottom.x;
3262 nl = (top.y < bottom.y);
3263 }
3264
4facdf84 3265 while (poslt(top, bottom) && poslt(top, nlpos)) {
4eeb7d09 3266#if 0
3267 char cbuf[16], *p;
3268 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3269#else
3270 wchar_t cbuf[16], *p;
3271 int uc = (ldata[top.x] & 0xFFFF);
3272 int set, c;
3273
3274 if (uc == UCSWIDE) {
3275 top.x++;
3276 continue;
3277 }
3278
3279 switch (uc & CSET_MASK) {
3280 case ATTR_LINEDRW:
f6b14226 3281 if (!term->cfg->rawcnp) {
4eeb7d09 3282 uc = unitab_xterm[uc & 0xFF];
3283 break;
32874aea 3284 }
4eeb7d09 3285 case ATTR_ASCII:
3286 uc = unitab_line[uc & 0xFF];
3287 break;
d3cb5465 3288 case ATTR_SCOACS:
3289 uc = unitab_scoacs[uc&0xFF];
3290 break;
d3a22f79 3291 }
4eeb7d09 3292 switch (uc & CSET_MASK) {
3293 case ATTR_ACP:
3294 uc = unitab_font[uc & 0xFF];
3295 break;
3296 case ATTR_OEMCP:
3297 uc = unitab_oemcp[uc & 0xFF];
3298 break;
3299 }
3300
3301 set = (uc & CSET_MASK);
3302 c = (uc & CHAR_MASK);
3303 cbuf[0] = uc;
3304 cbuf[1] = 0;
3305
3306 if (DIRECT_FONT(uc)) {
3307 if (c >= ' ' && c != 0x7F) {
e63ae276 3308 char buf[4];
4eeb7d09 3309 WCHAR wbuf[4];
3310 int rv;
1709795f 3311 if (is_dbcs_leadbyte(font_codepage, (BYTE) c)) {
4eeb7d09 3312 buf[0] = c;
7b966c9b 3313 buf[1] = (char) (0xFF & ldata[top.x + 1]);
1709795f 3314 rv = mb_to_wc(font_codepage, 0, buf, 2, wbuf, 4);
4eeb7d09 3315 top.x++;
3316 } else {
3317 buf[0] = c;
1709795f 3318 rv = mb_to_wc(font_codepage, 0, buf, 1, wbuf, 4);
4eeb7d09 3319 }
bc1235d4 3320
4eeb7d09 3321 if (rv > 0) {
3322 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3323 cbuf[rv] = 0;
d3a22f79 3324 }
d3a22f79 3325 }
4eeb7d09 3326 }
3327#endif
3328
3329 for (p = cbuf; *p; p++) {
3330 /* Enough overhead for trailing NL and nul */
3331 if (wblen >= buflen - 16) {
3332 workbuf =
3333 srealloc(workbuf,
3334 sizeof(wchar_t) * (buflen += 100));
3335 wbptr = workbuf + wblen;
3336 }
3337 wblen++;
3338 *wbptr++ = *p;
bc1235d4 3339 }
4facdf84 3340 top.x++;
bc1235d4 3341 }
3342 if (nl) {
3343 int i;
4eeb7d09 3344 for (i = 0; i < sel_nl_sz; i++) {
32874aea 3345 wblen++;
bc1235d4 3346 *wbptr++ = sel_nl[i];
3347 }
3348 }
4facdf84 3349 top.y++;
6908fed7 3350 top.x = rect ? old_top_x : 0;
bc1235d4 3351 }
e6346999 3352#if SELECTION_NUL_TERMINATED
4eeb7d09 3353 wblen++;
3354 *wbptr++ = 0;
e6346999 3355#endif
a8327734 3356 write_clip(term->frontend, workbuf, wblen, FALSE); /* transfer to clipbd */
32874aea 3357 if (buflen > 0) /* indicates we allocated this buffer */
bc1235d4 3358 sfree(workbuf);
bc1235d4 3359}
4eeb7d09 3360
887035a5 3361void term_copyall(Terminal *term)
32874aea 3362{
4facdf84 3363 pos top;
887035a5 3364 top.y = -count234(term->scrollback);
4facdf84 3365 top.x = 0;
887035a5 3366 clipme(term, top, term->curs, 0);
4eeb7d09 3367}
3368
3369/*
887035a5 3370 * The wordness array is mainly for deciding the disposition of the
3371 * US-ASCII characters.
4eeb7d09 3372 */
887035a5 3373static int wordtype(Terminal *term, int uc)
4eeb7d09 3374{
b9d7bcad 3375 struct ucsword {
4eeb7d09 3376 int start, end, ctype;
b9d7bcad 3377 };
3378 static const struct ucsword ucs_words[] = {
4eeb7d09 3379 {
3380 128, 160, 0}, {
3381 161, 191, 1}, {
3382 215, 215, 1}, {
3383 247, 247, 1}, {
3384 0x037e, 0x037e, 1}, /* Greek question mark */
3385 {
3386 0x0387, 0x0387, 1}, /* Greek ano teleia */
3387 {
3388 0x055a, 0x055f, 1}, /* Armenian punctuation */
3389 {
3390 0x0589, 0x0589, 1}, /* Armenian full stop */
3391 {
3392 0x0700, 0x070d, 1}, /* Syriac punctuation */
3393 {
3394 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3395 {
3396 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3397 {
3398 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3399 {
3400 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3401 {
3402 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3403 {
3404 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3405 {
3406 0x2000, 0x200a, 0}, /* Various spaces */
3407 {
3408 0x2070, 0x207f, 2}, /* superscript */
3409 {
3410 0x2080, 0x208f, 2}, /* subscript */
3411 {
3412 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3413 {
3414 0x3000, 0x3000, 0}, /* ideographic space */
3415 {
3416 0x3001, 0x3020, 1}, /* ideographic punctuation */
3417 {
3418 0x303f, 0x309f, 3}, /* Hiragana */
3419 {
3420 0x30a0, 0x30ff, 3}, /* Katakana */
3421 {
3422 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3423 {
3424 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3425 {
3426 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3427 {
3428 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3429 {
3430 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3431 {
3432 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3433 {
3434 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3435 {
3436 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3437 {
3438 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3439 {
3440 0, 0, 0}
3441 };
b9d7bcad 3442 const struct ucsword *wptr;
4eeb7d09 3443
3444 uc &= (CSET_MASK | CHAR_MASK);
3445
3446 switch (uc & CSET_MASK) {
3447 case ATTR_LINEDRW:
3448 uc = unitab_xterm[uc & 0xFF];
3449 break;
3450 case ATTR_ASCII:
3451 uc = unitab_line[uc & 0xFF];
3452 break;
d3cb5465 3453 case ATTR_SCOACS:
3454 uc = unitab_scoacs[uc&0xFF];
3455 break;
4eeb7d09 3456 }
3457 switch (uc & CSET_MASK) {
3458 case ATTR_ACP:
3459 uc = unitab_font[uc & 0xFF];
3460 break;
3461 case ATTR_OEMCP:
3462 uc = unitab_oemcp[uc & 0xFF];
3463 break;
3464 }
3465
5a73255e 3466 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3467 * fail as there's such a thing as a double width space. :-(
3468 */
3469 if (dbcs_screenfont && font_codepage == line_codepage)
3470 return (uc != ' ');
3471
4eeb7d09 3472 if (uc < 0x80)
887035a5 3473 return term->wordness[uc];
4eeb7d09 3474
3475 for (wptr = ucs_words; wptr->start; wptr++) {
3476 if (uc >= wptr->start && uc <= wptr->end)
3477 return wptr->ctype;
3478 }
3479
3480 return 2;
bc1235d4 3481}
3482
374330e2 3483/*
3484 * Spread the selection outwards according to the selection mode.
3485 */
887035a5 3486static pos sel_spread_half(Terminal *term, pos p, int dir)
32874aea 3487{
4facdf84 3488 unsigned long *ldata;
374330e2 3489 short wvalue;
887035a5 3490 int topy = -count234(term->scrollback);
374330e2 3491
4facdf84 3492 ldata = lineptr(p.y);
374330e2 3493
887035a5 3494 switch (term->selmode) {
374330e2 3495 case SM_CHAR:
3496 /*
3497 * In this mode, every character is a separate unit, except
3498 * for runs of spaces at the end of a non-wrapping line.
3499 */
887035a5 3500 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3501 unsigned long *q = ldata + term->cols;
4facdf84 3502 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
374330e2 3503 q--;
887035a5 3504 if (q == ldata + term->cols)
374330e2 3505 q--;
32874aea 3506 if (p.x >= q - ldata)
887035a5 3507 p.x = (dir == -1 ? q - ldata : term->cols - 1);
374330e2 3508 }
3509 break;
3510 case SM_WORD:
3511 /*
3512 * In this mode, the units are maximal runs of characters
3513 * whose `wordness' has the same value.
3514 */
887035a5 3515 wvalue = wordtype(term, ldata[p.x]);
374330e2 3516 if (dir == +1) {
50ab4088 3517 while (1) {
887035a5 3518 if (p.x < term->cols-1) {
3519 if (wordtype(term, ldata[p.x + 1]) == wvalue)
50ab4088 3520 p.x++;
3521 else
3522 break;
3523 } else {
887035a5 3524 if (ldata[term->cols] & LATTR_WRAPPED) {
50ab4088 3525 unsigned long *ldata2;
3526 ldata2 = lineptr(p.y+1);
887035a5 3527 if (wordtype(term, ldata2[0]) == wvalue) {
50ab4088 3528 p.x = 0;
3529 p.y++;
3530 ldata = ldata2;
3531 } else
3532 break;
3533 } else
3534 break;
3535 }
3536 }
374330e2 3537 } else {
50ab4088 3538 while (1) {
3539 if (p.x > 0) {
887035a5 3540 if (wordtype(term, ldata[p.x - 1]) == wvalue)
50ab4088 3541 p.x--;
3542 else
3543 break;
3544 } else {
3545 unsigned long *ldata2;
3546 if (p.y <= topy)
3547 break;
3548 ldata2 = lineptr(p.y-1);
887035a5 3549 if ((ldata2[term->cols] & LATTR_WRAPPED) &&
3550 wordtype(term, ldata2[term->cols-1]) == wvalue) {
3551 p.x = term->cols-1;
50ab4088 3552 p.y--;
3553 ldata = ldata2;
3554 } else
3555 break;
3556 }
3557 }
374330e2 3558 }
3559 break;
3560 case SM_LINE:
3561 /*
3562 * In this mode, every line is a unit.
3563 */
887035a5 3564 p.x = (dir == -1 ? 0 : term->cols - 1);
374330e2 3565 break;
3566 }
3567 return p;
3568}
3569
887035a5 3570static void sel_spread(Terminal *term)
32874aea 3571{
887035a5 3572 if (term->seltype == LEXICOGRAPHIC) {
3573 term->selstart = sel_spread_half(term, term->selstart, -1);
3574 decpos(term->selend);
3575 term->selend = sel_spread_half(term, term->selend, +1);
3576 incpos(term->selend);
6908fed7 3577 }
374330e2 3578}
3579
887035a5 3580void term_do_paste(Terminal *term)
568dd02f 3581{
3582 wchar_t *data;
3583 int len;
3584
a8327734 3585 get_clip(term->frontend, &data, &len);
2cb50250 3586 if (data && len > 0) {
568dd02f 3587 wchar_t *p, *q;
3588
887035a5 3589 term_seen_key_event(term); /* pasted data counts */
2cb50250 3590
887035a5 3591 if (term->paste_buffer)
3592 sfree(term->paste_buffer);
3593 term->paste_pos = term->paste_hold = term->paste_len = 0;
3594 term->paste_buffer = smalloc(len * sizeof(wchar_t));
568dd02f 3595
3596 p = q = data;
3597 while (p < data + len) {
3598 while (p < data + len &&
3599 !(p <= data + len - sel_nl_sz &&
3600 !memcmp(p, sel_nl, sizeof(sel_nl))))
3601 p++;
3602
3603 {
3604 int i;
3605 for (i = 0; i < p - q; i++) {
887035a5 3606 term->paste_buffer[term->paste_len++] = q[i];
568dd02f 3607 }
3608 }
3609
3610 if (p <= data + len - sel_nl_sz &&
3611 !memcmp(p, sel_nl, sizeof(sel_nl))) {
92e23ad9 3612 term->paste_buffer[term->paste_len++] = '\015';
568dd02f 3613 p += sel_nl_sz;
3614 }
3615 q = p;
3616 }
3617
3618 /* Assume a small paste will be OK in one go. */
887035a5 3619 if (term->paste_len < 256) {
b9d7bcad 3620 if (term->ldisc)
3621 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
887035a5 3622 if (term->paste_buffer)
3623 sfree(term->paste_buffer);
3624 term->paste_buffer = 0;
3625 term->paste_pos = term->paste_hold = term->paste_len = 0;
568dd02f 3626 }
3627 }
a8327734 3628 get_clip(term->frontend, NULL, NULL);
568dd02f 3629}
3630
887035a5 3631void term_mouse(Terminal *term, Mouse_Button b, Mouse_Action a, int x, int y,
6908fed7 3632 int shift, int ctrl, int alt)
32874aea 3633{
4facdf84 3634 pos selpoint;
3635 unsigned long *ldata;
887035a5 3636 int raw_mouse = (term->xterm_mouse &&
f6b14226 3637 !term->cfg->no_mouse_rep &&
3638 !(term->cfg->mouse_override && shift));
6908fed7 3639 int default_seltype;
32874aea 3640
fff61f25 3641 if (y < 0) {
32874aea 3642 y = 0;
fff61f25 3643 if (a == MA_DRAG && !raw_mouse)
887035a5 3644 term_scroll(term, 0, -1);
fff61f25 3645 }
887035a5 3646 if (y >= term->rows) {
3647 y = term->rows - 1;
fff61f25 3648 if (a == MA_DRAG && !raw_mouse)
887035a5 3649 term_scroll(term, 0, +1);
fff61f25 3650 }
32874aea 3651 if (x < 0) {
3652 if (y > 0) {
887035a5 3653 x = term->cols - 1;
32874aea 3654 y--;
3655 } else
3656 x = 0;
094ed2a6 3657 }
887035a5 3658 if (x >= term->cols)
3659 x = term->cols - 1;
37508af4 3660
887035a5 3661 selpoint.y = y + term->disptop;
4facdf84 3662 selpoint.x = x;
3663 ldata = lineptr(selpoint.y);
887035a5 3664 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
4facdf84 3665 selpoint.x /= 2;
374330e2 3666
fff61f25 3667 if (raw_mouse) {
01c034ad 3668 int encstate = 0, r, c;
3669 char abuf[16];
01c034ad 3670
b9d7bcad 3671 if (term->ldisc) {
3672
3673 switch (b) {
3674 case MBT_LEFT:
3675 encstate = 0x20; /* left button down */
3676 break;
3677 case MBT_MIDDLE:
3678 encstate = 0x21;
3679 break;
3680 case MBT_RIGHT:
3681 encstate = 0x22;
3682 break;
3683 case MBT_WHEEL_UP:
3684 encstate = 0x60;
3685 break;
3686 case MBT_WHEEL_DOWN:
3687 encstate = 0x61;
3688 break;
3689 default: break; /* placate gcc warning about enum use */
3690 }
3691 switch (a) {
3692 case MA_DRAG:
3693 if (term->xterm_mouse == 1)
3694 return;
3695 encstate += 0x20;
3696 break;
3697 case MA_RELEASE:
3698 encstate = 0x23;
3699 term->mouse_is_down = 0;
3700 break;
3701 case MA_CLICK:
3702 if (term->mouse_is_down == b)
3703 return;
3704 term->mouse_is_down = b;
3705 break;
3706 default: break; /* placate gcc warning about enum use */
3707 }
3708 if (shift)
3709 encstate += 0x04;
3710 if (ctrl)
3711 encstate += 0x10;
3712 r = y + 33;
3713 c = x + 33;
3714
3715 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
3716 ldisc_send(term->ldisc, abuf, 6, 0);
01c034ad 3717 }
01c034ad 3718 return;
3719 }
3720
a8327734 3721 b = translate_button(term->frontend, b);
01c034ad 3722
6908fed7 3723 /*
3724 * Set the selection type (rectangular or normal) at the start
3725 * of a selection attempt, from the state of Alt.
3726 */
f6b14226 3727 if (!alt ^ !term->cfg->rect_select)
6908fed7 3728 default_seltype = RECTANGULAR;
3729 else
3730 default_seltype = LEXICOGRAPHIC;
3731
887035a5 3732 if (term->selstate == NO_SELECTION) {
3733 term->seltype = default_seltype;
6908fed7 3734 }
3735
01c034ad 3736 if (b == MBT_SELECT && a == MA_CLICK) {
887035a5 3737 deselect(term);
3738 term->selstate = ABOUT_TO;
3739 term->seltype = default_seltype;
3740 term->selanchor = selpoint;
3741 term->selmode = SM_CHAR;
01c034ad 3742 } else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
887035a5 3743 deselect(term);
3744 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
3745 term->selstate = DRAGGING;
3746 term->selstart = term->selanchor = selpoint;
3747 term->selend = term->selstart;
3748 incpos(term->selend);
3749 sel_spread(term);
01c034ad 3750 } else if ((b == MBT_SELECT && a == MA_DRAG) ||
3751 (b == MBT_EXTEND && a != MA_RELEASE)) {
887035a5 3752 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
374330e2 3753 return;
887035a5 3754 if (b == MBT_EXTEND && a != MA_DRAG && term->selstate == SELECTED) {
3755 if (term->seltype == LEXICOGRAPHIC) {
6908fed7 3756 /*
3757 * For normal selection, we extend by moving
3758 * whichever end of the current selection is closer
3759 * to the mouse.
3760 */
887035a5 3761 if (posdiff(selpoint, term->selstart) <
3762 posdiff(term->selend, term->selstart) / 2) {
3763 term->selanchor = term->selend;
3764 decpos(term->selanchor);
6908fed7 3765 } else {
887035a5 3766 term->selanchor = term->selstart;
6908fed7 3767 }
4facdf84 3768 } else {
6908fed7 3769 /*
3770 * For rectangular selection, we have a choice of
3771 * _four_ places to put selanchor and selpoint: the
3772 * four corners of the selection.
3773 */
887035a5 3774 if (2*selpoint.x < term->selstart.x + term->selend.x)
3775 term->selanchor.x = term->selend.x-1;
6908fed7 3776 else
887035a5 3777 term->selanchor.x = term->selstart.x;
6908fed7 3778
887035a5 3779 if (2*selpoint.y < term->selstart.y + term->selend.y)
3780 term->selanchor.y = term->selend.y;
6908fed7 3781 else
887035a5 3782 term->selanchor.y = term->selstart.y;
4facdf84 3783 }
887035a5 3784 term->selstate = DRAGGING;
374330e2 3785 }
887035a5 3786 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
3787 term->selanchor = selpoint;
3788 term->selstate = DRAGGING;
3789 if (term->seltype == LEXICOGRAPHIC) {
6908fed7 3790 /*
3791 * For normal selection, we set (selstart,selend) to
3792 * (selpoint,selanchor) in some order.
3793 */
887035a5 3794 if (poslt(selpoint, term->selanchor)) {
3795 term->selstart = selpoint;
3796 term->selend = term->selanchor;
3797 incpos(term->selend);
6908fed7 3798 } else {
887035a5 3799 term->selstart = term->selanchor;
3800 term->selend = selpoint;
3801 incpos(term->selend);
6908fed7 3802 }
374330e2 3803 } else {
6908fed7 3804 /*
3805 * For rectangular selection, we may need to
3806 * interchange x and y coordinates (if the user has
3807 * dragged in the -x and +y directions, or vice versa).
3808 */
887035a5 3809 term->selstart.x = min(term->selanchor.x, selpoint.x);
3810 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
3811 term->selstart.y = min(term->selanchor.y, selpoint.y);
3812 term->selend.y = max(term->selanchor.y, selpoint.y);
374330e2 3813 }
887035a5 3814 sel_spread(term);
01c034ad 3815 } else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
887035a5 3816 if (term->selstate == DRAGGING) {
374330e2 3817 /*
3818 * We've completed a selection. We now transfer the
3819 * data to the clipboard.
3820 */
887035a5 3821 clipme(term, term->selstart, term->selend,
3822 (term->seltype == RECTANGULAR));
3823 term->selstate = SELECTED;
374330e2 3824 } else
887035a5 3825 term->selstate = NO_SELECTION;
32874aea 3826 } else if (b == MBT_PASTE
e6346999 3827 && (a == MA_CLICK
3828#if MULTICLICK_ONLY_EVENT
3829 || a == MA_2CLK || a == MA_3CLK
3830#endif
3831 )) {
a8327734 3832 request_paste(term->frontend);
374330e2 3833 }
3834
887035a5 3835 term_update(term);
374330e2 3836}
3837
887035a5 3838void term_nopaste(Terminal *term)
32874aea 3839{
887035a5 3840 if (term->paste_len == 0)
32874aea 3841 return;
887035a5 3842 sfree(term->paste_buffer);
f278d6f8 3843 term->paste_buffer = NULL;
887035a5 3844 term->paste_len = 0;
c9def1b8 3845}
3846
887035a5 3847int term_paste_pending(Terminal *term)
0f660c8f 3848{
887035a5 3849 return term->paste_len != 0;
0f660c8f 3850}
3851
887035a5 3852void term_paste(Terminal *term)
32874aea 3853{
c9def1b8 3854 long now, paste_diff;
3855
887035a5 3856 if (term->paste_len == 0)
32874aea 3857 return;
c9def1b8 3858
3859 /* Don't wait forever to paste */
887035a5 3860 if (term->paste_hold) {
f7f27309 3861 now = GETTICKCOUNT();
887035a5 3862 paste_diff = now - term->last_paste;
32874aea 3863 if (paste_diff >= 0 && paste_diff < 450)
c9def1b8 3864 return;
3865 }
887035a5 3866 term->paste_hold = 0;
c9def1b8 3867
887035a5 3868 while (term->paste_pos < term->paste_len) {
8df7a775 3869 int n = 0;
887035a5 3870 while (n + term->paste_pos < term->paste_len) {
92e23ad9 3871 if (term->paste_buffer[term->paste_pos + n++] == '\015')
8df7a775 3872 break;
3873 }
b9d7bcad 3874 if (term->ldisc)
3875 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
887035a5 3876 term->paste_pos += n;
c9def1b8 3877
887035a5 3878 if (term->paste_pos < term->paste_len) {
3879 term->paste_hold = 1;
c9def1b8 3880 return;
3881 }
3882 }
887035a5 3883 sfree(term->paste_buffer);
3884 term->paste_buffer = NULL;
3885 term->paste_len = 0;
c9def1b8 3886}
3887
887035a5 3888static void deselect(Terminal *term)
32874aea 3889{
887035a5 3890 term->selstate = NO_SELECTION;
3891 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
374330e2 3892}
3893
887035a5 3894void term_deselect(Terminal *term)
32874aea 3895{
887035a5 3896 deselect(term);
3897 term_update(term);
374330e2 3898}
fe50e814 3899
887035a5 3900int term_ldisc(Terminal *term, int option)
32874aea 3901{
3902 if (option == LD_ECHO)
887035a5 3903 return term->term_echoing;
32874aea 3904 if (option == LD_EDIT)
887035a5 3905 return term->term_editing;
0965bee0 3906 return FALSE;
3907}
3908
fe50e814 3909/*
3910 * from_backend(), to get data from the backend for the terminal.
3911 */
887035a5 3912int from_backend(void *vterm, int is_stderr, char *data, int len)
32874aea 3913{
887035a5 3914 Terminal *term = (Terminal *)vterm;
3915
2b0c045b 3916 assert(len > 0);
3917
887035a5 3918 bufchain_add(&term->inbuf, data, len);
5471d09a 3919
3920 /*
a748a096 3921 * term_out() always completely empties inbuf. Therefore,
3922 * there's no reason at all to return anything other than zero
3923 * from this function, because there _can't_ be a question of
3924 * the remote side needing to wait until term_out() has cleared
3925 * a backlog.
3926 *
5471d09a 3927 * This is a slightly suboptimal way to deal with SSH2 - in
3928 * principle, the window mechanism would allow us to continue
3929 * to accept data on forwarded ports and X connections even
3930 * while the terminal processing was going slowly - but we
3931 * can't do the 100% right thing without moving the terminal
3932 * processing into a separate thread, and that might hurt
3933 * portability. So we manage stdout buffering the old SSH1 way:
3934 * if the terminal processing goes slowly, the whole SSH
3935 * connection stops accepting data until it's ready.
a748a096 3936 *
5471d09a 3937 * In practice, I can't imagine this causing serious trouble.
3938 */
3939 return 0;
fe50e814 3940}
a8327734 3941
3942void term_provide_logctx(Terminal *term, void *logctx)
3943{
3944 term->logctx = logctx;
3945}
Local modifications for Simon Tatham's `PuTTY' SSH client and terminal emulator