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Patch from Robert de Bath: increase timer resolution.
[u/mdw/putty] / terminal.c
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374330e2 1#include <windows.h>
2
3#include <stdio.h>
4#include <stdlib.h>
49bad831 5#include <ctype.h>
374330e2 6
7#include "putty.h"
8
c9def1b8 9#define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
e14a5a13 10#define CL_VT100 0x0002 /* VT100 */
11#define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
12#define CL_VT102 0x0008 /* VT102 */
13#define CL_VT220 0x0010 /* VT220 */
14#define CL_VT320 0x0020 /* VT320 */
15#define CL_VT420 0x0040 /* VT420 */
16#define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
17#define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
c9def1b8 18#define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
19#define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
20#define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
e14a5a13 21
c9def1b8 22#define TM_VT100 (CL_ANSIMIN|CL_VT100)
23#define TM_VT100AVO (TM_VT100|CL_VT100AVO)
24#define TM_VT102 (TM_VT100AVO|CL_VT102)
25#define TM_VT220 (TM_VT102|CL_VT220)
26#define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
27#define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
28
29#define TM_PUTTY (0xFFFF)
e14a5a13 30
31#define compatibility(x) \
32 if ( ((CL_##x)&compatibility_level) == 0 ) { \
33 termstate=TOPLEVEL; \
34 break; \
35 }
c9def1b8 36#define compatibility2(x,y) \
37 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
38 termstate=TOPLEVEL; \
39 break; \
40 }
e14a5a13 41
42#define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
43
44static int compatibility_level = TM_PUTTY;
45
46
374330e2 47static unsigned long *text; /* buffer of text on terminal screen */
48static unsigned long *scrtop; /* top of working screen */
49static unsigned long *disptop; /* top of displayed screen */
50static unsigned long *sbtop; /* top of scrollback */
c9def1b8 51static unsigned long *sbbot; /* furthest extent of scrollback */
374330e2 52static unsigned long *cpos; /* cursor position (convenience) */
53static unsigned long *disptext; /* buffer of text on real screen */
54static unsigned long *wanttext; /* buffer of text we want on screen */
55static unsigned long *alttext; /* buffer of text on alt. screen */
56
57static unsigned char *selspace; /* buffer for building selections in */
58
59#define TSIZE (sizeof(*text))
60#define fix_cpos do { cpos = scrtop + curs_y * (cols+1) + curs_x; } while(0)
61
62static unsigned long curr_attr, save_attr;
e14a5a13 63static unsigned long erase_char = ERASE_CHAR;
374330e2 64
65static int curs_x, curs_y; /* cursor */
66static int save_x, save_y; /* saved cursor position */
67static int marg_t, marg_b; /* scroll margins */
68static int dec_om; /* DEC origin mode flag */
69static int wrap, wrapnext; /* wrap flags */
70static int insert; /* insert-mode flag */
71static int cset; /* 0 or 1: which char set */
72static int save_cset, save_csattr; /* saved with cursor position */
73static int rvideo; /* global reverse video flag */
e14a5a13 74static int cursor_on; /* cursor enabled flag */
75static int reset_132; /* Flag ESC c resets to 80 cols */
76static int use_bce; /* Use Background coloured erase */
77static int blinker; /* When blinking is the cursor on ? */
c9def1b8 78static int tblinker; /* When the blinking text is on */
79static int blink_is_real; /* Actually blink blinking text */
374330e2 80
81static unsigned long cset_attr[2];
82
83/*
84 * Saved settings on the alternate screen.
85 */
86static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset;
87static int alt_t, alt_b;
88static int alt_which;
89
90#define ARGS_MAX 32 /* max # of esc sequence arguments */
064916ea 91#define ARG_DEFAULT 0 /* if an arg isn't specified */
374330e2 92#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
93static int esc_args[ARGS_MAX];
94static int esc_nargs;
95static int esc_query;
8b811b12 96#define ANSI(x,y) ((x)+((y)<<8))
97#define ANSI_QUE(x) ANSI(x,TRUE)
374330e2 98
99#define OSC_STR_MAX 2048
100static int osc_strlen;
101static char osc_string[OSC_STR_MAX+1];
102static int osc_w;
103
c9def1b8 104static char id_string[1024] = "\033[?6c";
105
374330e2 106static unsigned char *tabs;
107
374330e2 108static enum {
cabfd08c 109 TOPLEVEL,
110 SEEN_ESC,
111 SEEN_CSI,
112 SEEN_OSC,
113 SEEN_OSC_W,
114
115 DO_CTRLS,
116
117 IGNORE_NEXT,
118 SET_GL, SET_GR,
119 SEEN_OSC_P,
120 OSC_STRING, OSC_MAYBE_ST,
e14a5a13 121 SEEN_ESCHASH,
122 VT52_ESC,
123 VT52_Y1,
124 VT52_Y2
374330e2 125} termstate;
126
127static enum {
128 NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
129} selstate;
130static enum {
131 SM_CHAR, SM_WORD, SM_LINE
132} selmode;
133static unsigned long *selstart, *selend, *selanchor;
134
135static short wordness[256] = {
136 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 01 */
137 0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2, 2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1, /* 23 */
138 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2, /* 45 */
139 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */
140 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 89 */
141 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* AB */
142 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* CD */
143 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* EF */
144};
145
146static unsigned char sel_nl[] = SEL_NL;
c9def1b8 147static char * paste_buffer = 0;
148static int paste_len, paste_pos, paste_hold;
374330e2 149
150/*
151 * Internal prototypes.
152 */
153static void do_paint (Context, int);
154static void erase_lots (int, int, int);
155static void swap_screen (int);
156static void update_sbar (void);
157static void deselect (void);
158
159/*
160 * Set up power-on settings for the terminal.
161 */
162static void power_on(void) {
163 curs_x = curs_y = alt_x = alt_y = save_x = save_y = 0;
164 alt_t = marg_t = 0;
165 if (rows != -1)
166 alt_b = marg_b = rows - 1;
167 else
168 alt_b = marg_b = 0;
169 if (cols != -1) {
170 int i;
171 for (i = 0; i < cols; i++)
172 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
173 }
174 alt_om = dec_om = cfg.dec_om;
175 alt_wnext = wrapnext = alt_ins = insert = FALSE;
176 alt_wrap = wrap = cfg.wrap_mode;
177 alt_cset = cset = 0;
178 cset_attr[0] = cset_attr[1] = ATTR_ASCII;
179 rvideo = 0;
e14a5a13 180 cursor_on = 1;
374330e2 181 save_attr = curr_attr = ATTR_DEFAULT;
182 app_cursor_keys = cfg.app_cursor;
183 app_keypad_keys = cfg.app_keypad;
c9def1b8 184 use_bce = cfg.bce;
185 blink_is_real = cfg.blinktext;
e14a5a13 186 erase_char = ERASE_CHAR;
374330e2 187 alt_which = 0;
188 {
189 int i;
190 for (i = 0; i < 256; i++)
191 wordness[i] = cfg.wordness[i];
192 }
193 if (text) {
194 swap_screen (1);
195 erase_lots (FALSE, TRUE, TRUE);
196 swap_screen (0);
197 erase_lots (FALSE, TRUE, TRUE);
198 }
199}
200
201/*
202 * Force a screen update.
203 */
204void term_update(void) {
205 Context ctx;
206 ctx = get_ctx();
207 if (ctx) {
c9def1b8 208 if ( (seen_key_event && (cfg.scroll_on_key)) ||
a094ae43 209 (seen_disp_event && (cfg.scroll_on_disp)) ) {
cabfd08c 210 disptop = scrtop;
211 seen_disp_event = seen_key_event = 0;
8ac3e544 212 update_sbar();
cabfd08c 213 }
374330e2 214 do_paint (ctx, TRUE);
ec8679e9 215 sys_cursor(curs_x, curs_y + (scrtop - disptop) / (cols+1));
374330e2 216 free_ctx (ctx);
374330e2 217 }
218}
219
220/*
221 * Same as power_on(), but an external function.
222 */
223void term_pwron(void) {
224 power_on();
225 fix_cpos;
226 disptop = scrtop;
227 deselect();
228 term_update();
229}
230
231/*
232 * Clear the scrollback.
233 */
234void term_clrsb(void) {
235 disptop = sbtop = scrtop;
236 update_sbar();
237}
238
239/*
240 * Initialise the terminal.
241 */
242void term_init(void) {
c9def1b8 243 text = sbtop = sbbot = scrtop = disptop = cpos = NULL;
374330e2 244 disptext = wanttext = NULL;
245 tabs = NULL;
246 selspace = NULL;
247 deselect();
248 rows = cols = -1;
374330e2 249 power_on();
250}
251
252/*
253 * Set up the terminal for a given size.
254 */
255void term_size(int newrows, int newcols, int newsavelines) {
256 unsigned long *newtext, *newdisp, *newwant, *newalt;
257 int i, j, crows, ccols;
258
d6832394 259 int save_alt_which = alt_which;
260
374330e2 261 if (newrows == rows && newcols == cols && newsavelines == savelines)
262 return; /* nothing to do */
263
d6832394 264 deselect();
265 swap_screen(0);
266
374330e2 267 alt_t = marg_t = 0;
268 alt_b = marg_b = newrows - 1;
269
270 newtext = smalloc ((newrows+newsavelines)*(newcols+1)*TSIZE);
c9def1b8 271 sbbot = newtext + newsavelines*(newcols+1);
374330e2 272 for (i=0; i<(newrows+newsavelines)*(newcols+1); i++)
c9def1b8 273 newtext[i] = erase_char;
374330e2 274 if (rows != -1) {
275 crows = rows + (scrtop - sbtop) / (cols+1);
276 if (crows > newrows+newsavelines)
277 crows = newrows+newsavelines;
c9def1b8 278 if (newrows>crows)
279 disptop = newtext;
280 else
281 disptop = newtext + (crows-newrows)*(newcols+1);
374330e2 282 ccols = (cols < newcols ? cols : newcols);
283 for (i=0; i<crows; i++) {
c9def1b8 284 int oldidx = (rows - crows + i) * (cols+1);
285 int newidx = (newrows - crows + i) * (newcols+1);
286
374330e2 287 for (j=0; j<ccols; j++)
c9def1b8 288 disptop[newidx+j] = scrtop[oldidx+j];
289 disptop[newidx+newcols] =
290 (cols == newcols ? scrtop[oldidx+cols]
291 : (scrtop[oldidx+cols]&LATTR_MODE));
374330e2 292 }
c9def1b8 293 sbtop = newtext;
294 } else {
295 sbtop = disptop = newtext;
296 }
374330e2 297 scrtop = disptop;
298 sfree (text);
299 text = newtext;
300
301 newdisp = smalloc (newrows*(newcols+1)*TSIZE);
302 for (i=0; i<newrows*(newcols+1); i++)
303 newdisp[i] = ATTR_INVALID;
304 sfree (disptext);
305 disptext = newdisp;
306
307 newwant = smalloc (newrows*(newcols+1)*TSIZE);
308 for (i=0; i<newrows*(newcols+1); i++)
309 newwant[i] = ATTR_INVALID;
310 sfree (wanttext);
311 wanttext = newwant;
312
313 newalt = smalloc (newrows*(newcols+1)*TSIZE);
314 for (i=0; i<newrows*(newcols+1); i++)
e14a5a13 315 newalt[i] = erase_char;
374330e2 316 sfree (alttext);
317 alttext = newalt;
318
319 sfree (selspace);
320 selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) );
321
322 tabs = srealloc (tabs, newcols*sizeof(*tabs));
323 {
324 int i;
325 for (i = (cols > 0 ? cols : 0); i < newcols; i++)
326 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
327 }
328
329 if (rows > 0)
330 curs_y += newrows - rows;
331 if (curs_y < 0)
332 curs_y = 0;
333 if (curs_y >= newrows)
334 curs_y = newrows-1;
335 if (curs_x >= newcols)
336 curs_x = newcols-1;
337 alt_x = alt_y = 0;
338 wrapnext = alt_wnext = FALSE;
339
340 rows = newrows;
341 cols = newcols;
342 savelines = newsavelines;
343 fix_cpos;
344
d6832394 345 swap_screen(save_alt_which);
346
374330e2 347 update_sbar();
348 term_update();
349}
350
351/*
352 * Swap screens.
353 */
354static void swap_screen (int which) {
355 int t;
356 unsigned long tt;
357
358 if (which == alt_which)
359 return;
360
361 alt_which = which;
362
363 for (t=0; t<rows*(cols+1); t++) {
364 tt = scrtop[t]; scrtop[t] = alttext[t]; alttext[t] = tt;
365 }
366
367 t = curs_x; curs_x = alt_x; alt_x = t;
368 t = curs_y; curs_y = alt_y; alt_y = t;
369 t = marg_t; marg_t = alt_t; alt_t = t;
370 t = marg_b; marg_b = alt_b; alt_b = t;
371 t = dec_om; dec_om = alt_om; alt_om = t;
372 t = wrap; wrap = alt_wrap; alt_wrap = t;
373 t = wrapnext; wrapnext = alt_wnext; alt_wnext = t;
374 t = insert; insert = alt_ins; alt_ins = t;
375 t = cset; cset = alt_cset; alt_cset = t;
376
377 fix_cpos;
378}
379
380/*
374330e2 381 * Update the scroll bar.
382 */
383static void update_sbar(void) {
384 int min;
385
386 min = (sbtop - text) / (cols+1);
387 set_sbar ((scrtop - text) / (cols+1) + rows - min,
388 (disptop - text) / (cols+1) - min,
389 rows);
390}
391
392/*
393 * Check whether the region bounded by the two pointers intersects
394 * the scroll region, and de-select the on-screen selection if so.
395 */
396static void check_selection (unsigned long *from, unsigned long *to) {
397 if (from < selend && selstart < to)
398 deselect();
399}
400
401/*
402 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
403 * for backward.) `sb' is TRUE if the scrolling is permitted to
404 * affect the scrollback buffer.
405 */
406static void scroll (int topline, int botline, int lines, int sb) {
407 unsigned long *scroll_top;
c9def1b8 408 unsigned long *newscr;
374330e2 409 int scroll_size, size, i;
c9def1b8 410 int scrtop_is_disptop = (scrtop==disptop);
411static int recursive = 0;
412
413 /* Only scroll more than the window if we're doing a 10% scroll */
414 if (!recursive && lines > botline - topline + 1)
415 lines = botline - topline + 1;
374330e2 416
417 scroll_top = scrtop + topline*(cols+1);
418 size = (lines < 0 ? -lines : lines) * (cols+1);
419 scroll_size = (botline - topline + 1) * (cols+1) - size;
420
cabfd08c 421 if (lines > 0 && topline == 0 && alt_which == 0 && sb) {
374330e2 422 /*
cabfd08c 423 * Since we're going to scroll the top line and we're on the
c9def1b8 424 * scrolling screen let's also effect the scrollback buffer.
425 *
426 * This is normally done by moving the position the screen
427 * painter reads from to reduce the amount of memory copying
428 * required.
374330e2 429 */
c9def1b8 430 if (scroll_size >= 0 && !recursive) {
431 newscr = scrtop + lines * (cols+1);
432
433 if (newscr > sbbot && botline == rows-1) {
434 /* We've hit the bottom of memory, so we have to do a
435 * physical scroll. But instead of just 1 line do it
436 * by 10% of the available memory.
437 *
438 * If the scroll region isn't the whole screen then we can't
439 * do this as it stands. We would need to recover the bottom
440 * of the screen from the scroll buffer after being sure that
441 * it doesn't get deleted.
442 */
443
444 i = (rows+savelines)/10;
445
446 /* Make it simple and ensure safe recursion */
447 if ( i<savelines-1) {
448 recursive ++;
449 scroll(topline, botline, i, sb);
450 recursive --;
451
452 newscr = scrtop - i * (cols+1);
453 if (scrtop_is_disptop) disptop = newscr;
454 scrtop = newscr;
455 }
456
457 newscr = scrtop + lines * (cols+1);
458 }
459
460 if (newscr <= sbbot) {
461 if (scrtop_is_disptop) disptop = newscr;
462 scrtop = newscr;
463
464 if (botline == rows-1 )
465 for (i = 0; i < size; i++)
466 scrtop[i+scroll_size] = erase_char;
467
468 update_sbar();
469 fix_cpos;
470
471 if (botline != rows-1) {
472 /* This fastscroll only works for full window scrolls.
473 * If the caller wanted a partial one we have to reverse
474 * scroll the bottom of the screen.
475 */
476 scroll(botline-lines+1, rows-1, -lines, 0);
477 }
478 return ;
479 }
480
481 /* If we can't scroll by memory remapping do it physically.
482 * But rather than expensivly doing the scroll buffer just
483 * scroll the screen. All it means is that sometimes we choose
484 * to not add lines from a scroll region to the scroll buffer.
485 */
486
487 if (savelines <= 400) {
488 sbtop -= lines * (cols+1);
489 if (sbtop < text)
490 sbtop = text;
491 scroll_size += scroll_top - sbtop;
492 scroll_top = sbtop;
493
494 update_sbar();
495 }
496 } else {
497 /* Ho hum, expensive scroll required. */
498
499 sbtop -= lines * (cols+1);
500 if (sbtop < text)
501 sbtop = text;
502 scroll_size += scroll_top - sbtop;
503 scroll_top = sbtop;
504
505 update_sbar();
506 }
374330e2 507 }
508
509 if (scroll_size < 0) {
510 size += scroll_size;
511 scroll_size = 0;
512 }
513
514 if (lines > 0) {
515 if (scroll_size)
516 memmove (scroll_top, scroll_top + size, scroll_size*TSIZE);
517 for (i = 0; i < size; i++)
e14a5a13 518 scroll_top[i+scroll_size] = erase_char;
374330e2 519 if (selstart > scroll_top &&
520 selstart < scroll_top + size + scroll_size) {
521 selstart -= size;
522 if (selstart < scroll_top)
523 selstart = scroll_top;
524 }
525 if (selend > scroll_top &&
526 selend < scroll_top + size + scroll_size) {
527 selend -= size;
528 if (selend < scroll_top)
529 selend = scroll_top;
530 }
c9def1b8 531 if (scrtop_is_disptop)
532 disptop = scrtop;
533 else
534 if (disptop > scroll_top &&
535 disptop < scroll_top + size + scroll_size) {
536 disptop -= size;
537 if (disptop < scroll_top)
538 disptop = scroll_top;
539 }
374330e2 540 } else {
541 if (scroll_size)
542 memmove (scroll_top + size, scroll_top, scroll_size*TSIZE);
543 for (i = 0; i < size; i++)
e14a5a13 544 scroll_top[i] = erase_char;
374330e2 545 if (selstart > scroll_top &&
546 selstart < scroll_top + size + scroll_size) {
547 selstart += size;
548 if (selstart > scroll_top + size + scroll_size)
549 selstart = scroll_top + size + scroll_size;
550 }
551 if (selend > scroll_top &&
552 selend < scroll_top + size + scroll_size) {
553 selend += size;
554 if (selend > scroll_top + size + scroll_size)
555 selend = scroll_top + size + scroll_size;
556 }
c9def1b8 557 if (scrtop_is_disptop)
558 disptop = scrtop;
559 else if (disptop > scroll_top &&
560 disptop < scroll_top + size + scroll_size) {
561 disptop += size;
562 if (disptop > scroll_top + size + scroll_size)
563 disptop = scroll_top + size + scroll_size;
564 }
374330e2 565 }
374330e2 566}
567
568/*
569 * Move the cursor to a given position, clipping at boundaries. We
570 * may or may not want to clip at the scroll margin: marg_clip is 0
571 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
572 * even _being_ outside the margins.
573 */
574static void move (int x, int y, int marg_clip) {
575 if (x < 0)
576 x = 0;
577 if (x >= cols)
578 x = cols-1;
579 if (marg_clip) {
580 if ((curs_y >= marg_t || marg_clip == 2) && y < marg_t)
581 y = marg_t;
582 if ((curs_y <= marg_b || marg_clip == 2) && y > marg_b)
583 y = marg_b;
584 }
585 if (y < 0)
586 y = 0;
587 if (y >= rows)
588 y = rows-1;
589 curs_x = x;
590 curs_y = y;
591 fix_cpos;
592 wrapnext = FALSE;
593}
594
595/*
596 * Save or restore the cursor and SGR mode.
597 */
598static void save_cursor(int save) {
599 if (save) {
600 save_x = curs_x;
601 save_y = curs_y;
602 save_attr = curr_attr;
603 save_cset = cset;
604 save_csattr = cset_attr[cset];
605 } else {
606 curs_x = save_x;
607 curs_y = save_y;
c9def1b8 608 /* Make sure the window hasn't shrunk since the save */
609 if (curs_x >= cols) curs_x = cols-1;
610 if (curs_y >= rows) curs_y = rows-1;
611
374330e2 612 curr_attr = save_attr;
613 cset = save_cset;
614 cset_attr[cset] = save_csattr;
615 fix_cpos;
e14a5a13 616 if (use_bce) erase_char = (' ' |(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
374330e2 617 }
618}
619
620/*
621 * Erase a large portion of the screen: the whole screen, or the
622 * whole line, or parts thereof.
623 */
624static void erase_lots (int line_only, int from_begin, int to_end) {
625 unsigned long *startpos, *endpos;
626
627 if (line_only) {
628 startpos = cpos - curs_x;
c9def1b8 629 endpos = startpos + cols;
630 /* I've removed the +1 so that the Wide screen stuff is not
631 * removed when it shouldn't be.
632 */
374330e2 633 } else {
634 startpos = scrtop;
635 endpos = startpos + rows * (cols+1);
636 }
637 if (!from_begin)
638 startpos = cpos;
639 if (!to_end)
e14a5a13 640 endpos = cpos+1;
374330e2 641 check_selection (startpos, endpos);
e14a5a13 642
643 /* Clear screen also forces a full window redraw, just in case. */
644 if (startpos == scrtop && endpos == scrtop + rows * (cols+1))
645 term_invalidate();
646
374330e2 647 while (startpos < endpos)
e14a5a13 648 *startpos++ = erase_char;
374330e2 649}
650
651/*
652 * Insert or delete characters within the current line. n is +ve if
653 * insertion is desired, and -ve for deletion.
654 */
655static void insch (int n) {
656 int dir = (n < 0 ? -1 : +1);
657 int m;
658
659 n = (n < 0 ? -n : n);
660 if (n > cols - curs_x)
661 n = cols - curs_x;
662 m = cols - curs_x - n;
663 check_selection (cpos, cpos+n);
664 if (dir < 0) {
665 memmove (cpos, cpos+n, m*TSIZE);
666 while (n--)
e14a5a13 667 cpos[m++] = erase_char;
374330e2 668 } else {
669 memmove (cpos+n, cpos, m*TSIZE);
670 while (n--)
e14a5a13 671 cpos[n] = erase_char;
374330e2 672 }
673}
674
675/*
676 * Toggle terminal mode `mode' to state `state'. (`query' indicates
677 * whether the mode is a DEC private one or a normal one.)
678 */
679static void toggle_mode (int mode, int query, int state) {
680 if (query) switch (mode) {
681 case 1: /* application cursor keys */
682 app_cursor_keys = state;
683 break;
e14a5a13 684 case 2: /* VT52 mode */
685 vt52_mode = !state;
686 break;
374330e2 687 case 3: /* 80/132 columns */
688 deselect();
e14a5a13 689 request_resize (state ? 132 : 80, rows, 1);
690 reset_132 = state;
374330e2 691 break;
692 case 5: /* reverse video */
693 rvideo = state;
cabfd08c 694 seen_disp_event = TRUE;
e14a5a13 695 if (state) term_update();
374330e2 696 break;
697 case 6: /* DEC origin mode */
698 dec_om = state;
699 break;
700 case 7: /* auto wrap */
701 wrap = state;
702 break;
c9def1b8 703 case 8: /* auto key repeat */
704 repeat_off = !state;
705 break;
e14a5a13 706 case 25: /* enable/disable cursor */
ec55b220 707 compatibility2(OTHER,VT220);
e14a5a13 708 cursor_on = state;
709 seen_disp_event = TRUE;
710 break;
374330e2 711 case 47: /* alternate screen */
e14a5a13 712 compatibility(OTHER);
374330e2 713 deselect();
714 swap_screen (state);
715 disptop = scrtop;
716 break;
717 } else switch (mode) {
718 case 4: /* set insert mode */
e14a5a13 719 compatibility(VT102);
374330e2 720 insert = state;
721 break;
e14a5a13 722 case 12: /* set echo mode */
723 /*
724 * This may be very good in smcup and rmcup (or smkx & rmkx) if you
725 * have a long RTT and the telnet client/daemon doesn't understand
726 * linemode.
727 *
728 * DONT send TS_RECHO/TS_LECHO; the telnet daemon tries to fix the
729 * tty and _really_ confuses some programs.
730 */
ec55b220 731 compatibility2(OTHER,VT220);
e14a5a13 732 ldisc = (state? &ldisc_simple : &ldisc_term);
733 break;
c9def1b8 734 case 20: /* Return sends ... */
735 cr_lf_return = state;
736 break;
374330e2 737 }
738}
739
740/*
741 * Process an OSC sequence: set window title or icon name.
742 */
743static void do_osc(void) {
744 if (osc_w) {
745 while (osc_strlen--)
746 wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0];
747 } else {
748 osc_string[osc_strlen] = '\0';
749 switch (esc_args[0]) {
750 case 0:
751 case 1:
752 set_icon (osc_string);
753 if (esc_args[0] == 1)
754 break;
755 /* fall through: parameter 0 means set both */
756 case 2:
757 case 21:
758 set_title (osc_string);
759 break;
760 }
761 }
762}
763
764/*
765 * Remove everything currently in `inbuf' and stick it up on the
766 * in-memory display. There's a big state machine in here to
767 * process escape sequences...
768 */
769void term_out(void) {
c9def1b8 770 int c, inbuf_reap;
771
772static int beep_overload = 0;
773 int beep_count = 0;
774
775 for(inbuf_reap = 0; inbuf_reap < inbuf_head; inbuf_reap++)
776 {
777 c = inbuf[inbuf_reap];
374330e2 778
c9def1b8 779 /*
5fd04f07 780 * Optionally log the session traffic to a file. Useful for
781 * debugging and possibly also useful for actual logging.
782 */
783 if (logfile) {
374330e2 784 static FILE *fp = NULL;
5fd04f07 785 if (!fp) fp = fopen(logfile, "wb");
374330e2 786 if (fp) fputc (c, fp);
787 }
e14a5a13 788 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
789 * be able to display 8-bit characters, but I'll let that go 'cause
790 * of i18n.
791 */
c9def1b8 792 if( ( (c&0x60) == 0 || c == '\177') &&
793 termstate < DO_CTRLS &&
e14a5a13 794 ( (c&0x80) == 0 || has_compat(VT220))) {
374330e2 795 switch (c) {
796 case '\005': /* terminal type query */
e14a5a13 797 /* Strictly speaking this is VT100 but a VT100 defaults to
798 * no response. Other terminals respond at their option.
799 *
800 * Don't put a CR in the default string as this tends to
801 * upset some weird software.
802 *
803 * An xterm returns "xterm" (5 characters)
804 */
805 compatibility(OTHER);
806 ldisc->send ("PuTTY", 5);
374330e2 807 break;
808 case '\007':
c9def1b8 809 beep_count++;
810 if(beep_count>6) beep_overload=1;
374330e2 811 disptop = scrtop;
374330e2 812 break;
813 case '\b':
c9def1b8 814 if (curs_x == 0 && curs_y == 0)
815 ;
816 else if (curs_x == 0 && curs_y > 0)
374330e2 817 curs_x = cols-1, curs_y--;
818 else if (wrapnext)
819 wrapnext = FALSE;
820 else
821 curs_x--;
822 fix_cpos;
cabfd08c 823 seen_disp_event = TRUE;
374330e2 824 break;
825 case '\016':
e14a5a13 826 compatibility(VT100);
374330e2 827 cset = 1;
828 break;
829 case '\017':
e14a5a13 830 compatibility(VT100);
374330e2 831 cset = 0;
832 break;
833 case '\033':
e14a5a13 834 if (vt52_mode)
835 termstate = VT52_ESC;
836 else {
837 compatibility(ANSIMIN);
838 termstate = SEEN_ESC;
839 }
374330e2 840 break;
841 case 0233:
e14a5a13 842 compatibility(VT220);
374330e2 843 termstate = SEEN_CSI;
844 esc_nargs = 1;
845 esc_args[0] = ARG_DEFAULT;
846 esc_query = FALSE;
847 break;
848 case 0235:
e14a5a13 849 compatibility(VT220);
374330e2 850 termstate = SEEN_OSC;
851 esc_args[0] = 0;
852 break;
853 case '\r':
854 curs_x = 0;
855 wrapnext = FALSE;
856 fix_cpos;
cabfd08c 857 seen_disp_event = TRUE;
c9def1b8 858 paste_hold = 0;
374330e2 859 break;
860 case '\013':
861 case '\014':
e14a5a13 862 compatibility(VT100);
374330e2 863 case '\n':
864 if (curs_y == marg_b)
865 scroll (marg_t, marg_b, 1, TRUE);
866 else if (curs_y < rows-1)
867 curs_y++;
cabfd08c 868 if (cfg.lfhascr)
869 curs_x = 0;
374330e2 870 fix_cpos;
871 wrapnext = FALSE;
cabfd08c 872 seen_disp_event = 1;
c9def1b8 873 paste_hold = 0;
374330e2 874 break;
875 case '\t':
374330e2 876 {
877 unsigned long *old_cpos = cpos;
c9def1b8 878 unsigned long *p = scrtop + curs_y * (cols+1) + cols;
879
880 do {
881 curs_x++;
882 } while (curs_x < cols-1 && !tabs[curs_x]);
883
884 if ((*p & LATTR_MODE) != LATTR_NORM)
885 {
886 if (curs_x >= cols/2)
887 curs_x = cols/2-1;
888 }
889 else
890 {
891 if (curs_x >= cols)
892 curs_x = cols-1;
893 }
894
374330e2 895 fix_cpos;
896 check_selection (old_cpos, cpos);
897 }
cabfd08c 898 seen_disp_event = TRUE;
374330e2 899 break;
ec55b220 900 case '\177': /* Destructive backspace
901 This does nothing on a real VT100 */
902 compatibility(OTHER);
903 if (curs_x && !wrapnext) curs_x--;
904 wrapnext = FALSE;
905 fix_cpos;
906 *cpos = (' ' | curr_attr | ATTR_ASCII);
907 break;
cabfd08c 908 }
909 }
910 else switch (termstate) {
911 case TOPLEVEL:
8b811b12 912 /* Only graphic characters get this far, ctrls are stripped above */
913 if (wrapnext) {
c9def1b8 914 cpos[1] |= ATTR_WRAPPED;
8b811b12 915 if (curs_y == marg_b)
916 scroll (marg_t, marg_b, 1, TRUE);
917 else if (curs_y < rows-1)
918 curs_y++;
919 curs_x = 0;
920 fix_cpos;
921 wrapnext = FALSE;
8b811b12 922 }
923 if (insert)
924 insch (1);
e14a5a13 925 if (selstate != NO_SELECTION)
926 check_selection (cpos, cpos+1);
927 switch (cset_attr[cset]) {
928 /* Linedraw characters are different from 'ESC ( B' only
929 * for a small range, for ones outside that range make sure
930 * we use the same font as well as the same encoding.
931 */
932 case ATTR_LINEDRW:
ec55b220 933 if (c<0x5f || c>0x7F)
e14a5a13 934 *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
935 ATTR_ASCII;
ec55b220 936 else if (c==0x5F)
937 *cpos++ = ' ' | curr_attr | ATTR_ASCII;
e14a5a13 938 else
939 *cpos++ = ((unsigned char)c) | curr_attr | ATTR_LINEDRW;
940 break;
ec55b220 941 case ATTR_GBCHR:
942 /* If UK-ASCII, make the '#' a LineDraw Pound */
943 if (c == '#') {
944 *cpos++ = '}' | curr_attr | ATTR_LINEDRW;
945 break;
946 }
947 /*FALLTHROUGH*/
e14a5a13 948 default:
949 *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
950 (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII);
951 break;
952 }
8b811b12 953 curs_x++;
954 if (curs_x == cols) {
955 cpos--;
956 curs_x--;
957 wrapnext = wrap;
374330e2 958 }
8b811b12 959 seen_disp_event = 1;
374330e2 960 break;
cabfd08c 961
374330e2 962 case IGNORE_NEXT:
963 termstate = TOPLEVEL;
964 break;
965 case OSC_MAYBE_ST:
966 /*
967 * This state is virtually identical to SEEN_ESC, with the
968 * exception that we have an OSC sequence in the pipeline,
969 * and _if_ we see a backslash, we process it.
970 */
971 if (c == '\\') {
972 do_osc();
973 termstate = TOPLEVEL;
974 break;
975 }
976 /* else fall through */
977 case SEEN_ESC:
978 termstate = TOPLEVEL;
979 switch (c) {
374330e2 980 case ' ': /* some weird sequence? */
e14a5a13 981 compatibility(VT220);
374330e2 982 termstate = IGNORE_NEXT;
983 break;
984 case '[': /* enter CSI mode */
985 termstate = SEEN_CSI;
986 esc_nargs = 1;
987 esc_args[0] = ARG_DEFAULT;
988 esc_query = FALSE;
989 break;
990 case ']': /* xterm escape sequences */
e14a5a13 991 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
992 compatibility(OTHER);
374330e2 993 termstate = SEEN_OSC;
994 esc_args[0] = 0;
995 break;
996 case '(': /* should set GL */
e14a5a13 997 compatibility(VT100);
374330e2 998 termstate = SET_GL;
999 break;
1000 case ')': /* should set GR */
e14a5a13 1001 compatibility(VT100);
374330e2 1002 termstate = SET_GR;
1003 break;
1004 case '7': /* save cursor */
e14a5a13 1005 compatibility(VT100);
374330e2 1006 save_cursor (TRUE);
1007 break;
1008 case '8': /* restore cursor */
e14a5a13 1009 compatibility(VT100);
374330e2 1010 save_cursor (FALSE);
cabfd08c 1011 seen_disp_event = TRUE;
374330e2 1012 break;
1013 case '=':
e14a5a13 1014 compatibility(VT100);
374330e2 1015 app_keypad_keys = TRUE;
1016 break;
1017 case '>':
e14a5a13 1018 compatibility(VT100);
374330e2 1019 app_keypad_keys = FALSE;
1020 break;
1021 case 'D': /* exactly equivalent to LF */
e14a5a13 1022 compatibility(VT100);
374330e2 1023 if (curs_y == marg_b)
1024 scroll (marg_t, marg_b, 1, TRUE);
1025 else if (curs_y < rows-1)
1026 curs_y++;
1027 fix_cpos;
1028 wrapnext = FALSE;
cabfd08c 1029 seen_disp_event = TRUE;
374330e2 1030 break;
1031 case 'E': /* exactly equivalent to CR-LF */
e14a5a13 1032 compatibility(VT100);
374330e2 1033 curs_x = 0;
374330e2 1034 if (curs_y == marg_b)
1035 scroll (marg_t, marg_b, 1, TRUE);
1036 else if (curs_y < rows-1)
1037 curs_y++;
1038 fix_cpos;
1039 wrapnext = FALSE;
cabfd08c 1040 seen_disp_event = TRUE;
374330e2 1041 break;
1042 case 'M': /* reverse index - backwards LF */
e14a5a13 1043 compatibility(VT100);
374330e2 1044 if (curs_y == marg_t)
1045 scroll (marg_t, marg_b, -1, TRUE);
1046 else if (curs_y > 0)
1047 curs_y--;
1048 fix_cpos;
1049 wrapnext = FALSE;
cabfd08c 1050 seen_disp_event = TRUE;
374330e2 1051 break;
1052 case 'Z': /* terminal type query */
e14a5a13 1053 compatibility(VT100);
c9def1b8 1054 ldisc->send (id_string, strlen(id_string));
374330e2 1055 break;
1056 case 'c': /* restore power-on settings */
e14a5a13 1057 compatibility(VT100);
374330e2 1058 power_on();
e14a5a13 1059 if (reset_132) {
1060 request_resize (80, rows, 1);
1061 reset_132 = 0;
1062 }
374330e2 1063 fix_cpos;
1064 disptop = scrtop;
cabfd08c 1065 seen_disp_event = TRUE;
374330e2 1066 break;
1067 case '#': /* ESC # 8 fills screen with Es :-) */
e14a5a13 1068 compatibility(VT100);
374330e2 1069 termstate = SEEN_ESCHASH;
1070 break;
1071 case 'H': /* set a tab */
e14a5a13 1072 compatibility(VT100);
374330e2 1073 tabs[curs_x] = TRUE;
1074 break;
1075 }
1076 break;
1077 case SEEN_CSI:
1078 termstate = TOPLEVEL; /* default */
8b811b12 1079 if( isdigit(c) )
1080 {
374330e2 1081 if (esc_nargs <= ARGS_MAX) {
1082 if (esc_args[esc_nargs-1] == ARG_DEFAULT)
1083 esc_args[esc_nargs-1] = 0;
1084 esc_args[esc_nargs-1] =
1085 10 * esc_args[esc_nargs-1] + c - '0';
1086 }
1087 termstate = SEEN_CSI;
8b811b12 1088 }
1089 else if( c == ';' )
1090 {
374330e2 1091 if (++esc_nargs <= ARGS_MAX)
1092 esc_args[esc_nargs-1] = ARG_DEFAULT;
1093 termstate = SEEN_CSI;
8b811b12 1094 }
1095 else if( c < '@' )
1096 {
1097 if( esc_query ) esc_query = -1;
1098 else if( c == '?' ) esc_query = TRUE;
1099 else esc_query = c;
374330e2 1100 termstate = SEEN_CSI;
8b811b12 1101 }
1102 else switch (ANSI(c,esc_query)) {
374330e2 1103 case 'A': /* move up N lines */
1104 move (curs_x, curs_y - def(esc_args[0], 1), 1);
cabfd08c 1105 seen_disp_event = TRUE;
374330e2 1106 break;
e14a5a13 1107 case 'e': /* move down N lines */
1108 compatibility(ANSI);
1109 case 'B':
374330e2 1110 move (curs_x, curs_y + def(esc_args[0], 1), 1);
cabfd08c 1111 seen_disp_event = TRUE;
374330e2 1112 break;
e14a5a13 1113 case 'a': /* move right N cols */
1114 compatibility(ANSI);
1115 case 'C':
374330e2 1116 move (curs_x + def(esc_args[0], 1), curs_y, 1);
cabfd08c 1117 seen_disp_event = TRUE;
374330e2 1118 break;
1119 case 'D': /* move left N cols */
1120 move (curs_x - def(esc_args[0], 1), curs_y, 1);
cabfd08c 1121 seen_disp_event = TRUE;
374330e2 1122 break;
1123 case 'E': /* move down N lines and CR */
e14a5a13 1124 compatibility(ANSI);
374330e2 1125 move (0, curs_y + def(esc_args[0], 1), 1);
cabfd08c 1126 seen_disp_event = TRUE;
374330e2 1127 break;
1128 case 'F': /* move up N lines and CR */
e14a5a13 1129 compatibility(ANSI);
374330e2 1130 move (0, curs_y - def(esc_args[0], 1), 1);
cabfd08c 1131 seen_disp_event = TRUE;
374330e2 1132 break;
1133 case 'G': case '`': /* set horizontal posn */
e14a5a13 1134 compatibility(ANSI);
374330e2 1135 move (def(esc_args[0], 1) - 1, curs_y, 0);
cabfd08c 1136 seen_disp_event = TRUE;
374330e2 1137 break;
1138 case 'd': /* set vertical posn */
e14a5a13 1139 compatibility(ANSI);
374330e2 1140 move (curs_x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1141 (dec_om ? 2 : 0));
cabfd08c 1142 seen_disp_event = TRUE;
374330e2 1143 break;
1144 case 'H': case 'f': /* set horz and vert posns at once */
1145 if (esc_nargs < 2)
1146 esc_args[1] = ARG_DEFAULT;
1147 move (def(esc_args[1], 1) - 1,
1148 (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1149 (dec_om ? 2 : 0));
cabfd08c 1150 seen_disp_event = TRUE;
374330e2 1151 break;
1152 case 'J': /* erase screen or parts of it */
1153 {
1154 unsigned int i = def(esc_args[0], 0) + 1;
1155 if (i > 3)
1156 i = 0;
1157 erase_lots(FALSE, !!(i & 2), !!(i & 1));
1158 }
1159 disptop = scrtop;
cabfd08c 1160 seen_disp_event = TRUE;
374330e2 1161 break;
1162 case 'K': /* erase line or parts of it */
1163 {
1164 unsigned int i = def(esc_args[0], 0) + 1;
1165 if (i > 3)
1166 i = 0;
1167 erase_lots(TRUE, !!(i & 2), !!(i & 1));
1168 }
cabfd08c 1169 seen_disp_event = TRUE;
374330e2 1170 break;
1171 case 'L': /* insert lines */
e14a5a13 1172 compatibility(VT102);
374330e2 1173 if (curs_y <= marg_b)
1174 scroll (curs_y, marg_b, -def(esc_args[0], 1), FALSE);
cabfd08c 1175 seen_disp_event = TRUE;
374330e2 1176 break;
1177 case 'M': /* delete lines */
e14a5a13 1178 compatibility(VT102);
374330e2 1179 if (curs_y <= marg_b)
cabfd08c 1180 scroll (curs_y, marg_b, def(esc_args[0], 1), TRUE);
1181 seen_disp_event = TRUE;
374330e2 1182 break;
1183 case '@': /* insert chars */
e14a5a13 1184 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1185 compatibility(VT102);
374330e2 1186 insch (def(esc_args[0], 1));
cabfd08c 1187 seen_disp_event = TRUE;
374330e2 1188 break;
1189 case 'P': /* delete chars */
e14a5a13 1190 compatibility(VT102);
374330e2 1191 insch (-def(esc_args[0], 1));
cabfd08c 1192 seen_disp_event = TRUE;
374330e2 1193 break;
1194 case 'c': /* terminal type query */
e14a5a13 1195 compatibility(VT100);
1196 /* This is the response for a VT102 */
c9def1b8 1197 ldisc->send (id_string, strlen(id_string));
374330e2 1198 break;
1199 case 'n': /* cursor position query */
1200 if (esc_args[0] == 6) {
1201 char buf[32];
1202 sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1);
5bc238bb 1203 ldisc->send (buf, strlen(buf));
374330e2 1204 }
e14a5a13 1205 else if (esc_args[0] == 5) {
e14a5a13 1206 ldisc->send ("\033[0n", 4);
1207 }
374330e2 1208 break;
e14a5a13 1209 case 'h': /* toggle modes to high */
8b811b12 1210 case ANSI_QUE('h'):
e14a5a13 1211 compatibility(VT100);
1212 {
1213 int i;
1214 for (i=0; i<esc_nargs; i++)
1215 toggle_mode (esc_args[i], esc_query, TRUE);
1216 }
374330e2 1217 break;
e14a5a13 1218 case 'l': /* toggle modes to low */
8b811b12 1219 case ANSI_QUE('l'):
e14a5a13 1220 compatibility(VT100);
1221 {
1222 int i;
1223 for (i=0; i<esc_nargs; i++)
1224 toggle_mode (esc_args[i], esc_query, FALSE);
1225 }
374330e2 1226 break;
1227 case 'g': /* clear tabs */
e14a5a13 1228 compatibility(VT100);
374330e2 1229 if (esc_nargs == 1) {
1230 if (esc_args[0] == 0) {
1231 tabs[curs_x] = FALSE;
1232 } else if (esc_args[0] == 3) {
1233 int i;
1234 for (i = 0; i < cols; i++)
1235 tabs[i] = FALSE;
1236 }
1237 }
1238 break;
1239 case 'r': /* set scroll margins */
e14a5a13 1240 compatibility(VT100);
8b811b12 1241 if (esc_nargs <= 2) {
374330e2 1242 int top, bot;
7e394092 1243 top = def(esc_args[0], 1) - 1;
1244 bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows :
1245 def(esc_args[1], rows)) - 1;
374330e2 1246 if (bot >= rows)
1247 bot = rows-1;
7e394092 1248 /* VTTEST Bug 9 - if region is less than 2 lines
1249 * don't change region.
1250 */
83ea993b 1251 if (bot-top > 0) {
374330e2 1252 marg_t = top;
1253 marg_b = bot;
1254 curs_x = 0;
1255 /*
1256 * I used to think the cursor should be
1257 * placed at the top of the newly marginned
1258 * area. Apparently not: VMS TPU falls over
1259 * if so.
e14a5a13 1260 *
1261 * Well actually it should for Origin mode - RDB
374330e2 1262 */
e14a5a13 1263 curs_y = (dec_om ? marg_t : 0);
374330e2 1264 fix_cpos;
cabfd08c 1265 seen_disp_event = TRUE;
374330e2 1266 }
1267 }
1268 break;
1269 case 'm': /* set graphics rendition */
1270 {
e14a5a13 1271 /*
1272 * A VT100 without the AVO only had one attribute, either
1273 * underline or reverse video depending on the cursor type,
1274 * this was selected by CSI 7m.
1275 *
1276 * case 2:
1277 * This is DIM on the VT100-AVO and VT102
1278 * case 5:
1279 * This is BLINK on the VT100-AVO and VT102+
1280 * case 8:
1281 * This is INVIS on the VT100-AVO and VT102
1282 * case 21:
1283 * This like 22 disables BOLD, DIM and INVIS
1284 *
1285 * The ANSI colours appear on any terminal that has colour
1286 * (obviously) but the interaction between sgr0 and the
1287 * colours varies but is usually related to the background
1288 * colour erase item.
1289 * The interaction between colour attributes and the mono
1290 * ones is also very implementation dependent.
1291 *
1292 * The 39 and 49 attributes are likely to be unimplemented.
1293 */
374330e2 1294 int i;
1295 for (i=0; i<esc_nargs; i++) {
1296 switch (def(esc_args[i], 0)) {
1297 case 0: /* restore defaults */
1298 curr_attr = ATTR_DEFAULT; break;
1299 case 1: /* enable bold */
e14a5a13 1300 compatibility(VT100AVO);
374330e2 1301 curr_attr |= ATTR_BOLD; break;
374330e2 1302 case 21: /* (enable double underline) */
e14a5a13 1303 compatibility(OTHER);
1304 case 4: /* enable underline */
1305 compatibility(VT100AVO);
374330e2 1306 curr_attr |= ATTR_UNDER; break;
e14a5a13 1307 case 5: /* enable blink */
1308 compatibility(VT100AVO);
1309 curr_attr |= ATTR_BLINK; break;
374330e2 1310 case 7: /* enable reverse video */
1311 curr_attr |= ATTR_REVERSE; break;
1312 case 22: /* disable bold */
ec55b220 1313 compatibility2(OTHER,VT220);
374330e2 1314 curr_attr &= ~ATTR_BOLD; break;
1315 case 24: /* disable underline */
ec55b220 1316 compatibility2(OTHER,VT220);
374330e2 1317 curr_attr &= ~ATTR_UNDER; break;
e14a5a13 1318 case 25: /* disable blink */
ec55b220 1319 compatibility2(OTHER,VT220);
e14a5a13 1320 curr_attr &= ~ATTR_BLINK; break;
374330e2 1321 case 27: /* disable reverse video */
ec55b220 1322 compatibility2(OTHER,VT220);
374330e2 1323 curr_attr &= ~ATTR_REVERSE; break;
1324 case 30: case 31: case 32: case 33:
1325 case 34: case 35: case 36: case 37:
1326 /* foreground */
1327 curr_attr &= ~ATTR_FGMASK;
1328 curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT;
1329 break;
1330 case 39: /* default-foreground */
1331 curr_attr &= ~ATTR_FGMASK;
1332 curr_attr |= ATTR_DEFFG;
1333 break;
1334 case 40: case 41: case 42: case 43:
1335 case 44: case 45: case 46: case 47:
1336 /* background */
1337 curr_attr &= ~ATTR_BGMASK;
1338 curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT;
1339 break;
1340 case 49: /* default-background */
1341 curr_attr &= ~ATTR_BGMASK;
1342 curr_attr |= ATTR_DEFBG;
1343 break;
1344 }
1345 }
e14a5a13 1346 if (use_bce)
c9def1b8 1347 erase_char =
1348 (' '|
1349 (curr_attr&(ATTR_FGMASK|ATTR_BGMASK|ATTR_BLINK))
1350 );
374330e2 1351 }
1352 break;
1353 case 's': /* save cursor */
1354 save_cursor (TRUE);
1355 break;
1356 case 'u': /* restore cursor */
1357 save_cursor (FALSE);
cabfd08c 1358 seen_disp_event = TRUE;
374330e2 1359 break;
1360 case 't': /* set page size - ie window height */
e14a5a13 1361 /*
1362 * VT340/VT420 sequence DECSLPP, DEC only allows values
1363 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1364 * illegal values (eg first arg 1..9) for window changing
1365 * and reports.
1366 */
1367 compatibility(VT340TEXT);
1368 if (esc_nargs<=1 && (esc_args[0]<1 || esc_args[0]>=24)) {
c9def1b8 1369 request_resize (cols, def(esc_args[0], 24), 0);
e14a5a13 1370 deselect();
1371 }
1372 break;
1373 case ANSI('|', '*'):
1374 /* VT420 sequence DECSNLS
1375 * Set number of lines on screen
1376 * VT420 uses VGA like hardware and can support any size in
1377 * reasonable range (24..49 AIUI) with no default specified.
1378 */
1379 compatibility(VT420);
c9def1b8 1380 if (esc_nargs==1 && esc_args[0]>0) {
1381 request_resize (cols, def(esc_args[0], cfg.height), 0);
e14a5a13 1382 deselect();
1383 }
1384 break;
1385 case ANSI('|', '$'):
1386 /* VT340/VT420 sequence DECSCPP
1387 * Set number of columns per page
1388 * Docs imply range is only 80 or 132, but I'll allow any.
1389 */
1390 compatibility(VT340TEXT);
1391 if (esc_nargs<=1) {
c9def1b8 1392 request_resize (def(esc_args[0], cfg.width), rows, 0);
e14a5a13 1393 deselect();
1394 }
374330e2 1395 break;
1396 case 'X': /* write N spaces w/o moving cursor */
e14a5a13 1397 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
c9def1b8 1398 compatibility(ANSIMIN);
374330e2 1399 {
1400 int n = def(esc_args[0], 1);
1401 unsigned long *p = cpos;
1402 if (n > cols - curs_x)
1403 n = cols - curs_x;
1404 check_selection (cpos, cpos+n);
1405 while (n--)
e14a5a13 1406 *p++ = erase_char;
cabfd08c 1407 seen_disp_event = TRUE;
374330e2 1408 }
1409 break;
1410 case 'x': /* report terminal characteristics */
e14a5a13 1411 compatibility(VT100);
374330e2 1412 {
1413 char buf[32];
1414 int i = def(esc_args[0], 0);
1415 if (i == 0 || i == 1) {
1416 strcpy (buf, "\033[2;1;1;112;112;1;0x");
1417 buf[2] += i;
5bc238bb 1418 ldisc->send (buf, 20);
374330e2 1419 }
1420 }
1421 break;
e14a5a13 1422 case ANSI('L','='):
1423 compatibility(OTHER);
1424 use_bce = (esc_args[0]<=0);
1425 erase_char = ERASE_CHAR;
1426 if (use_bce)
1427 erase_char = (' '|(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
1428 break;
c9def1b8 1429 case ANSI('E','='):
1430 compatibility(OTHER);
1431 blink_is_real = (esc_args[0]>=1);
1432 break;
e14a5a13 1433 case ANSI('p','"'):
1434 /* Allow the host to make this emulator a 'perfect' VT102.
1435 * This first appeared in the VT220, but we do need to get
1436 * back to PuTTY mode so I won't check it.
1437 *
ec55b220 1438 * The arg in 40..42 are a PuTTY extension.
1439 * The 2nd arg, 8bit vs 7bit is not checked.
e14a5a13 1440 *
1441 * Setting VT102 mode should also change the Fkeys to
1442 * generate PF* codes as a real VT102 has no Fkeys.
1443 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1444 * send nothing.
1445 *
1446 * Note ESC c will NOT change this!
1447 */
1448
ec55b220 1449 switch (esc_args[0]) {
1450 case 61: compatibility_level &= ~TM_VTXXX;
1451 compatibility_level |= TM_VT102; break;
1452 case 62: compatibility_level &= ~TM_VTXXX;
1453 compatibility_level |= TM_VT220; break;
1454
1455 default: if( esc_args[0] > 60 && esc_args[0] < 70 )
1456 compatibility_level |= TM_VTXXX;
1457 break;
1458
1459 case 40: compatibility_level &= TM_VTXXX; break;
1460 case 41: compatibility_level = TM_PUTTY; break;
1461 case 42: compatibility_level = TM_SCOANSI; break;
1462
1463 case ARG_DEFAULT:
1464 compatibility_level = TM_PUTTY; break;
1465 case 50: break;
1466 }
1467
1468 /* Change the response to CSI c */
1469 if (esc_args[0] == 50) {
1470 int i;
1471 char lbuf[64];
1472 strcpy(id_string, "\033[?");
1473 for (i=1; i<esc_nargs; i++) {
1474 if (i!=1) strcat(id_string, ";");
1475 sprintf(lbuf, "%d", esc_args[i]);
1476 strcat(id_string, lbuf);
1477 }
1478 strcat(id_string, "c");
1479 }
1480
1481#if 0
1482 /* Is this a good idea ?
1483 * Well we should do a soft reset at this point ...
1484 */
1485 if (!has_compat(VT420) && has_compat(VT100)) {
1486 if (reset_132) request_resize (132, 24, 1);
1487 else request_resize ( 80, 24, 1);
1488 }
1489#endif
e14a5a13 1490 break;
374330e2 1491 }
1492 break;
1493 case SET_GL:
1494 case SET_GR:
e14a5a13 1495 /* VT100 only here, checked above */
374330e2 1496 switch (c) {
1497 case 'A':
1498 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR;
1499 break;
1500 case '0':
1501 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW;
1502 break;
e14a5a13 1503 case 'B':
374330e2 1504 default: /* specifically, 'B' */
1505 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII;
1506 break;
1507 }
e14a5a13 1508 if( !has_compat(VT220) || c != '%' )
8b811b12 1509 termstate = TOPLEVEL;
374330e2 1510 break;
1511 case SEEN_OSC:
1512 osc_w = FALSE;
1513 switch (c) {
374330e2 1514 case 'P': /* Linux palette sequence */
1515 termstate = SEEN_OSC_P;
1516 osc_strlen = 0;
1517 break;
1518 case 'R': /* Linux palette reset */
1519 palette_reset();
1520 term_invalidate();
1521 termstate = TOPLEVEL;
1522 break;
1523 case 'W': /* word-set */
1524 termstate = SEEN_OSC_W;
1525 osc_w = TRUE;
1526 break;
1527 case '0': case '1': case '2': case '3': case '4':
1528 case '5': case '6': case '7': case '8': case '9':
1529 esc_args[0] = 10 * esc_args[0] + c - '0';
1530 break;
1531 case 'L':
1532 /*
1533 * Grotty hack to support xterm and DECterm title
1534 * sequences concurrently.
1535 */
1536 if (esc_args[0] == 2) {
1537 esc_args[0] = 1;
1538 break;
1539 }
1540 /* else fall through */
1541 default:
1542 termstate = OSC_STRING;
1543 osc_strlen = 0;
1544 }
1545 break;
1546 case OSC_STRING:
8b811b12 1547 /*
1548 * This OSC stuff is EVIL. It takes just one character to get into
1549 * sysline mode and it's not initially obvious how to get out.
1550 * So I've added CR and LF as string aborts.
1551 * This shouldn't effect compatibility as I believe embedded
1552 * control characters are supposed to be interpreted (maybe?)
1553 * and they don't display anything useful anyway.
1554 *
1555 * -- RDB
1556 */
1557 if (c == '\n' || c == '\r') {
1558 termstate = TOPLEVEL;
1559 } else if (c == 0234 || c == '\007' ) {
374330e2 1560 /*
1561 * These characters terminate the string; ST and BEL
1562 * terminate the sequence and trigger instant
1563 * processing of it, whereas ESC goes back to SEEN_ESC
1564 * mode unless it is followed by \, in which case it is
1565 * synonymous with ST in the first place.
1566 */
1567 do_osc();
1568 termstate = TOPLEVEL;
1569 } else if (c == '\033')
1570 termstate = OSC_MAYBE_ST;
1571 else if (osc_strlen < OSC_STR_MAX)
1572 osc_string[osc_strlen++] = c;
1573 break;
1574 case SEEN_OSC_P:
1575 {
1576 int max = (osc_strlen == 0 ? 21 : 16);
1577 int val;
1578 if (c >= '0' && c <= '9')
1579 val = c - '0';
1580 else if (c >= 'A' && c <= 'A'+max-10)
1581 val = c - 'A' + 10;
1582 else if (c >= 'a' && c <= 'a'+max-10)
1583 val = c - 'a' + 10;
1584 else
1585 termstate = TOPLEVEL;
1586 osc_string[osc_strlen++] = val;
1587 if (osc_strlen >= 7) {
1588 palette_set (osc_string[0],
1589 osc_string[1] * 16 + osc_string[2],
1590 osc_string[3] * 16 + osc_string[4],
1591 osc_string[5] * 16 + osc_string[6]);
1592 term_invalidate();
1593 termstate = TOPLEVEL;
1594 }
1595 }
1596 break;
1597 case SEEN_OSC_W:
1598 switch (c) {
374330e2 1599 case '0': case '1': case '2': case '3': case '4':
1600 case '5': case '6': case '7': case '8': case '9':
1601 esc_args[0] = 10 * esc_args[0] + c - '0';
1602 break;
1603 default:
1604 termstate = OSC_STRING;
1605 osc_strlen = 0;
1606 }
1607 break;
1608 case SEEN_ESCHASH:
c9def1b8 1609 {
1610 unsigned long *p;
1611 unsigned long nlattr;
1612 int n;
1613
1614 switch (c) {
1615 case '8':
1616 p = scrtop;
1617 n = rows * (cols+1);
1618 while (n--)
1619 *p++ = ATTR_DEFAULT | 'E';
1620 disptop = scrtop;
1621 seen_disp_event = TRUE;
1622 check_selection (scrtop, scrtop + rows * (cols+1));
1623 break;
1624
1625 case '3': nlattr = LATTR_TOP; if(0) {
1626 case '4': nlattr = LATTR_BOT; } if(0) {
1627 case '5': nlattr = LATTR_NORM; } if(0) {
1628 case '6': nlattr = LATTR_WIDE; }
1629
1630 p = scrtop + curs_y * (cols+1) + cols;
1631 *p &= ~LATTR_MODE;
1632 *p |= nlattr;
1633 }
374330e2 1634 }
1635 termstate = TOPLEVEL;
1636 break;
e14a5a13 1637 case VT52_ESC:
1638 termstate = TOPLEVEL;
1639 seen_disp_event = TRUE;
1640 switch (c) {
1641 case 'A':
1642 move (curs_x, curs_y - 1, 1);
1643 break;
1644 case 'B':
1645 move (curs_x, curs_y + 1, 1);
1646 break;
1647 case 'C':
1648 move (curs_x + 1, curs_y, 1);
1649 break;
1650 case 'D':
1651 move (curs_x - 1, curs_y, 1);
1652 break;
1653 case 'F':
1654 cset_attr[cset=0] = ATTR_LINEDRW;
1655 break;
1656 case 'G':
1657 cset_attr[cset=0] = ATTR_ASCII;
1658 break;
1659 case 'H':
1660 move (0, 0, 0);
1661 break;
1662 case 'I':
1663 if (curs_y == 0)
1664 scroll (0, rows-1, -1, TRUE);
1665 else if (curs_y > 0)
1666 curs_y--;
1667 fix_cpos;
1668 wrapnext = FALSE;
1669 break;
1670 case 'J':
1671 erase_lots(FALSE, FALSE, TRUE);
1672 disptop = scrtop;
1673 break;
1674 case 'K':
1675 erase_lots(TRUE, FALSE, TRUE);
1676 break;
1677 case 'V':
1678 /* XXX Print cursor line */
1679 break;
1680 case 'W':
1681 /* XXX Start controller mode */
1682 break;
1683 case 'X':
1684 /* XXX Stop controller mode */
1685 break;
1686 case 'Y':
1687 termstate = VT52_Y1;
1688 break;
1689 case 'Z':
1690 ldisc->send ("\033/Z", 3);
1691 break;
1692 case '=':
ec55b220 1693 app_keypad_keys = TRUE;
e14a5a13 1694 break;
1695 case '>':
ec55b220 1696 app_keypad_keys = FALSE;
e14a5a13 1697 break;
1698 case '<':
1699 /* XXX This should switch to VT100 mode not current or default
1700 * VT mode. But this will only have effect in a VT220+
1701 * emulation.
1702 */
1703 vt52_mode = FALSE;
1704 break;
1705 case '^':
1706 /* XXX Enter auto print mode */
1707 break;
1708 case '_':
1709 /* XXX Exit auto print mode */
1710 break;
1711 case ']':
1712 /* XXX Print screen */
1713 break;
1714 }
1715 break;
1716 case VT52_Y1:
1717 termstate = VT52_Y2;
1718 move(curs_x, c-' ', 0);
1719 break;
1720 case VT52_Y2:
1721 termstate = TOPLEVEL;
1722 move(c-' ', curs_y, 0);
1723 break;
374330e2 1724 }
e14a5a13 1725 if (selstate != NO_SELECTION)
1726 check_selection (cpos, cpos+1);
374330e2 1727 }
c9def1b8 1728 inbuf_head = 0;
1729
1730 if (beep_overload)
1731 {
1732 if(!beep_count) beep_overload=0;
1733 }
1734 else if(beep_count && beep_count<5 && cfg.beep)
1735 beep(beep_count/3);
374330e2 1736}
1737
1738/*
1739 * Compare two lines to determine whether they are sufficiently
1740 * alike to scroll-optimise one to the other. Return the degree of
1741 * similarity.
1742 */
1743static int linecmp (unsigned long *a, unsigned long *b) {
1744 int i, n;
1745
1746 for (i=n=0; i < cols; i++)
1747 n += (*a++ == *b++);
1748 return n;
1749}
1750
1751/*
1752 * Given a context, update the window. Out of paranoia, we don't
1753 * allow WM_PAINT responses to do scrolling optimisations.
1754 */
ec8679e9 1755static void do_paint (Context ctx, int may_optimise){
374330e2 1756 int i, j, start, our_curs_y;
1757 unsigned long attr, rv, cursor;
1758 char ch[1024];
1759
e14a5a13 1760 if (cursor_on) {
1761 if (has_focus) {
217dceef 1762 if (blinker || !cfg.blink_cur)
1763 cursor = ATTR_ACTCURS;
1764 else
1765 cursor = 0;
e14a5a13 1766 }
1767 else
1768 cursor = ATTR_PASCURS;
1769 }
1770 else cursor = 0;
374330e2 1771 rv = (rvideo ? ATTR_REVERSE : 0);
1772 our_curs_y = curs_y + (scrtop - disptop) / (cols+1);
1773
1774 for (i=0; i<rows; i++) {
1775 int idx = i*(cols+1);
c9def1b8 1776 int lattr = (disptop[idx+cols] & LATTR_MODE);
374330e2 1777 for (j=0; j<=cols; j++,idx++) {
1778 unsigned long *d = disptop+idx;
c9def1b8 1779 wanttext[idx] = lattr | ((*d ^ rv
374330e2 1780 ^ (selstart <= d && d < selend ?
1781 ATTR_REVERSE : 0)) |
1782 (i==our_curs_y && j==curs_x ? cursor : 0));
c9def1b8 1783
1784 if (blink_is_real) {
1785 if (has_focus && tblinker && (wanttext[idx]&ATTR_BLINK) )
1786 {
1787 wanttext[idx] &= ATTR_MASK;
1788 wanttext[idx] += ' ';
1789 }
1790 wanttext[idx] &= ~ATTR_BLINK;
1791 }
374330e2 1792 }
1793 }
1794
1795 /*
1796 * We would perform scrolling optimisations in here, if they
1797 * didn't have a nasty tendency to cause the whole sodding
1798 * program to hang for a second at speed-critical moments.
1799 * We'll leave it well alone...
1800 */
1801
1802 for (i=0; i<rows; i++) {
1803 int idx = i*(cols+1);
c9def1b8 1804 int lattr = (wanttext[idx+cols] & LATTR_MODE);
374330e2 1805 start = -1;
1806 for (j=0; j<=cols; j++,idx++) {
1807 unsigned long t = wanttext[idx];
1808 int needs_update = (j < cols && t != disptext[idx]);
1809 int keep_going = (start != -1 && needs_update &&
1810 (t & ATTR_MASK) == attr &&
1811 j-start < sizeof(ch));
1812 if (start != -1 && !keep_going) {
c9def1b8 1813 do_text (ctx, start, i, ch, j-start, attr, lattr);
374330e2 1814 start = -1;
1815 }
1816 if (needs_update) {
1817 if (start == -1) {
1818 start = j;
1819 attr = t & ATTR_MASK;
1820 }
1821 ch[j-start] = (char) (t & CHAR_MASK);
1822 }
1823 disptext[idx] = t;
1824 }
1825 }
1826}
1827
1828/*
e14a5a13 1829 * Flick the switch that says if blinking things should be shown or hidden.
1830 */
1831
1832void term_blink(int flg) {
1833static long last_blink = 0;
c9def1b8 1834static long last_tblink = 0;
e14a5a13 1835 long now, blink_diff;
1836
c9def1b8 1837 now = GetTickCount();
1838 blink_diff = now-last_tblink;
1839
1840 /* Make sure the text blinks no more than 2Hz */
1841 if (blink_diff<0 || blink_diff>450)
1842 {
1843 last_tblink = now;
1844 tblinker = !tblinker;
1845 }
1846
e14a5a13 1847 if (flg) {
1848 blinker = 1;
c9def1b8 1849 last_blink = now;
e14a5a13 1850 return;
1851 }
e14a5a13 1852
1853 blink_diff = now-last_blink;
1854
1855 /* Make sure the cursor blinks no more than 2Hz */
1856 if (blink_diff>=0 && blink_diff<450)
1857 return;
1858
1859 last_blink = now;
1860 blinker = !blinker;
1861}
1862
1863/*
374330e2 1864 * Invalidate the whole screen so it will be repainted in full.
1865 */
1866void term_invalidate(void) {
1867 int i;
1868
1869 for (i=0; i<rows*(cols+1); i++)
1870 disptext[i] = ATTR_INVALID;
1871}
1872
1873/*
1874 * Paint the window in response to a WM_PAINT message.
1875 */
1876void term_paint (Context ctx, int l, int t, int r, int b) {
1877 int i, j, left, top, right, bottom;
1878
1879 left = l / font_width;
1880 right = (r - 1) / font_width;
1881 top = t / font_height;
1882 bottom = (b - 1) / font_height;
e42ad027 1883 for (i = top; i <= bottom && i < rows ; i++)
c9def1b8 1884 {
1885 if ( (disptext[i*(cols+1)+cols]&LATTR_MODE) == LATTR_NORM)
1886 for (j = left; j <= right && j < cols ; j++)
1887 disptext[i*(cols+1)+j] = ATTR_INVALID;
1888 else
1889 for (j = left/2; j <= right/2+1 && j < cols ; j++)
1890 disptext[i*(cols+1)+j] = ATTR_INVALID;
1891 }
374330e2 1892
e14a5a13 1893 /* This should happen soon enough, also for some reason it sometimes
1894 * fails to actually do anything when re-sizing ... painting the wrong
1895 * window perhaps ?
374330e2 1896 do_paint (ctx, FALSE);
e14a5a13 1897 */
374330e2 1898}
1899
1900/*
1901 * Attempt to scroll the scrollback. The second parameter gives the
1902 * position we want to scroll to; the first is +1 to denote that
1903 * this position is relative to the beginning of the scrollback, -1
1904 * to denote it is relative to the end, and 0 to denote that it is
1905 * relative to the current position.
1906 */
1907void term_scroll (int rel, int where) {
1908 int n = where * (cols+1);
1909
1910 disptop = (rel < 0 ? scrtop :
1911 rel > 0 ? sbtop : disptop) + n;
1912 if (disptop < sbtop)
1913 disptop = sbtop;
1914 if (disptop > scrtop)
1915 disptop = scrtop;
1916 update_sbar();
1917 term_update();
1918}
1919
1920/*
1921 * Spread the selection outwards according to the selection mode.
1922 */
1923static unsigned long *sel_spread_half (unsigned long *p, int dir) {
1924 unsigned long *linestart, *lineend;
1925 int x;
1926 short wvalue;
1927
1928 x = (p - text) % (cols+1);
1929 linestart = p - x;
1930 lineend = linestart + cols;
1931
1932 switch (selmode) {
1933 case SM_CHAR:
1934 /*
1935 * In this mode, every character is a separate unit, except
1936 * for runs of spaces at the end of a non-wrapping line.
1937 */
1938 if (!(linestart[cols] & ATTR_WRAPPED)) {
1939 unsigned long *q = lineend;
1940 while (q > linestart && (q[-1] & CHAR_MASK) == 0x20)
1941 q--;
1942 if (q == lineend)
1943 q--;
1944 if (p >= q)
1945 p = (dir == -1 ? q : lineend - 1);
1946 }
1947 break;
1948 case SM_WORD:
1949 /*
1950 * In this mode, the units are maximal runs of characters
1951 * whose `wordness' has the same value.
1952 */
1953 wvalue = wordness[*p & CHAR_MASK];
1954 if (dir == +1) {
1955 while (p < lineend && wordness[p[1] & CHAR_MASK] == wvalue)
1956 p++;
1957 } else {
1958 while (p > linestart && wordness[p[-1] & CHAR_MASK] == wvalue)
1959 p--;
1960 }
1961 break;
1962 case SM_LINE:
1963 /*
1964 * In this mode, every line is a unit.
1965 */
1966 p = (dir == -1 ? linestart : lineend - 1);
1967 break;
1968 }
1969 return p;
1970}
1971
1972static void sel_spread (void) {
1973 selstart = sel_spread_half (selstart, -1);
1974 selend = sel_spread_half (selend - 1, +1) + 1;
1975}
1976
1977void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) {
37508af4 1978 unsigned long *selpoint;
1979
1980 if (y<0) y = 0;
1981 if (y>=rows) y = rows-1;
094ed2a6 1982 if (x<0) {
1983 if (y > 0) {
1984 x = cols-1;
1985 y--;
1986 } else
1987 x = 0;
1988 }
37508af4 1989 if (x>=cols) x = cols-1;
1990
c9def1b8 1991 selpoint = disptop + y * (cols+1);
1992 if ((selpoint[cols]&LATTR_MODE) != LATTR_NORM)
1993 selpoint += x/2;
1994 else
1995 selpoint += x;
374330e2 1996
1997 if (b == MB_SELECT && a == MA_CLICK) {
1998 deselect();
1999 selstate = ABOUT_TO;
2000 selanchor = selpoint;
2001 selmode = SM_CHAR;
2002 } else if (b == MB_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
2003 deselect();
2004 selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
2005 selstate = DRAGGING;
2006 selstart = selanchor = selpoint;
2007 selend = selstart + 1;
2008 sel_spread();
2009 } else if ((b == MB_SELECT && a == MA_DRAG) ||
2010 (b == MB_EXTEND && a != MA_RELEASE)) {
2011 if (selstate == ABOUT_TO && selanchor == selpoint)
2012 return;
2013 if (b == MB_EXTEND && a != MA_DRAG && selstate == SELECTED) {
2014 if (selpoint-selstart < (selend-selstart)/2)
2015 selanchor = selend - 1;
2016 else
2017 selanchor = selstart;
2018 selstate = DRAGGING;
2019 }
2020 if (selstate != ABOUT_TO && selstate != DRAGGING)
2021 selanchor = selpoint;
2022 selstate = DRAGGING;
2023 if (selpoint < selanchor) {
2024 selstart = selpoint;
2025 selend = selanchor + 1;
2026 } else {
2027 selstart = selanchor;
2028 selend = selpoint + 1;
2029 }
2030 sel_spread();
2031 } else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) {
2032 if (selstate == DRAGGING) {
2033 /*
2034 * We've completed a selection. We now transfer the
2035 * data to the clipboard.
2036 */
2037 unsigned char *p = selspace;
2038 unsigned long *q = selstart;
2039
2040 while (q < selend) {
2041 int nl = FALSE;
2042 unsigned long *lineend = q - (q-text) % (cols+1) + cols;
2043 unsigned long *nlpos = lineend;
2044
2045 if (!(*nlpos & ATTR_WRAPPED)) {
2046 while ((nlpos[-1] & CHAR_MASK) == 0x20 && nlpos > q)
2047 nlpos--;
2048 if (nlpos < selend)
2049 nl = TRUE;
2050 }
2051 while (q < nlpos && q < selend)
ec55b220 2052 {
dcfa5de1 2053#if 0
ec55b220 2054 /* VT Specials -> ISO8859-1 */
2055 static const char poorman2[] =
2056 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
dcfa5de1 2057#endif
ec55b220 2058
2059 int ch = (*q & CHAR_MASK);
2060
dcfa5de1 2061#if 0
2062 if ((*q & ATTR_LINEDRW) && ch >= 0x60 && ch < 0x7F) {
ec55b220 2063 int x;
2064 *p++ = poorman2[2*(ch-0x60)];
2065 if ( (x = poorman2[2*(ch-0x60)+1]) != ' ')
2066 *p++ = x;
dcfa5de1 2067 } else
2068#endif
ec55b220 2069#if 0
dcfa5de1 2070 if ((*q & ATTR_GBCHR) && ch == '#')
ec55b220 2071 *p++ = (unsigned char) 0xA3;
ec55b220 2072 else
dcfa5de1 2073#endif
ec55b220 2074 *p++ = (unsigned char) ch;
2075 q++;
2076 }
374330e2 2077 if (nl) {
2078 int i;
2079 for (i=0; i<sizeof(sel_nl); i++)
2080 *p++ = sel_nl[i];
2081 }
2082 q = lineend + 1; /* start of next line */
2083 }
f0df44da 2084 write_clip (selspace, p - selspace, FALSE);
374330e2 2085 selstate = SELECTED;
2086 } else
2087 selstate = NO_SELECTION;
2088 } else if (b == MB_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) {
2089 char *data;
2090 int len;
2091
2092 get_clip((void **) &data, &len);
2093 if (data) {
2094 char *p, *q;
c9def1b8 2095
2096 if (paste_buffer) sfree(paste_buffer);
2097 paste_pos = paste_hold = paste_len = 0;
2098 paste_buffer = smalloc(len);
2099
374330e2 2100 p = q = data;
2101 while (p < data+len) {
2102 while (p < data+len &&
2103 !(p <= data+len-sizeof(sel_nl) &&
2104 !memcmp(p, sel_nl, sizeof(sel_nl))))
2105 p++;
14963b8f 2106
2107 {
2108 int i;
2109 unsigned char c;
2110 for(i=0;i<p-q;i++)
2111 {
2112 c=xlat_kbd2tty(q[i]);
c9def1b8 2113 paste_buffer[paste_len++] = c;
14963b8f 2114 }
2115 }
2116
374330e2 2117 if (p <= data+len-sizeof(sel_nl) &&
2118 !memcmp(p, sel_nl, sizeof(sel_nl))) {
c9def1b8 2119 paste_buffer[paste_len++] = '\r';
374330e2 2120 p += sizeof(sel_nl);
2121 }
2122 q = p;
2123 }
c9def1b8 2124
2125 /* Assume a small paste will be OK in one go. */
2126 if (paste_len<256) {
2127 ldisc->send (paste_buffer, paste_len);
2128 if (paste_buffer) sfree(paste_buffer);
2129 paste_buffer = 0;
2130 paste_pos = paste_hold = paste_len = 0;
2131 }
374330e2 2132 }
2133 get_clip(NULL, NULL);
2134 }
2135
2136 term_update();
2137}
2138
c9def1b8 2139void term_nopaste() {
2140 if(paste_len == 0) return;
2141 sfree(paste_buffer);
2142 paste_buffer = 0;
2143 paste_len = 0;
2144}
2145
2146void term_paste() {
8df7a775 2147 static long last_paste = 0;
c9def1b8 2148 long now, paste_diff;
2149
2150 if(paste_len == 0) return;
2151
2152 /* Don't wait forever to paste */
2153 if(paste_hold) {
2154 now = GetTickCount();
2155 paste_diff = now-last_paste;
2156 if (paste_diff>=0 && paste_diff<450)
2157 return;
2158 }
2159 paste_hold = 0;
2160
2161 while(paste_pos<paste_len)
2162 {
8df7a775 2163 int n = 0;
2164 while (n + paste_pos < paste_len) {
2165 if (paste_buffer[paste_pos + n++] == '\r')
2166 break;
2167 }
2168 ldisc->send (paste_buffer+paste_pos, n);
2169 paste_pos += n;
c9def1b8 2170
8df7a775 2171 if (paste_pos < paste_len) {
c9def1b8 2172 paste_hold = 1;
2173 return;
2174 }
2175 }
2176 sfree(paste_buffer);
2177 paste_buffer = 0;
2178 paste_len = 0;
2179}
2180
374330e2 2181static void deselect (void) {
2182 selstate = NO_SELECTION;
2183 selstart = selend = scrtop;
2184}
2185
2186void term_deselect (void) {
2187 deselect();
2188 term_update();
2189}
fe50e814 2190
2191/*
2192 * from_backend(), to get data from the backend for the terminal.
2193 */
2194void from_backend(int is_stderr, char *data, int len) {
2195 while (len--) {
2196 if (inbuf_head >= INBUF_SIZE)
2197 term_out();
2198 inbuf[inbuf_head++] = *data++;
2199 }
2200}
Local modifications for Simon Tatham's `PuTTY' SSH client and terminal emulator