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