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[u/mdw/putty] / terminal.c
1 #include <windows.h>
2
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <ctype.h>
6
7 #include <time.h>
8 #include <assert.h>
9 #include "putty.h"
10 #include "tree234.h"
11
12 #define VT52_PLUS
13
14 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
15 #define CL_VT100 0x0002 /* VT100 */
16 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
17 #define CL_VT102 0x0008 /* VT102 */
18 #define CL_VT220 0x0010 /* VT220 */
19 #define CL_VT320 0x0020 /* VT320 */
20 #define CL_VT420 0x0040 /* VT420 */
21 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
22 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
23 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
24 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
25 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
26
27 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
28 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
29 #define TM_VT102 (TM_VT100AVO|CL_VT102)
30 #define TM_VT220 (TM_VT102|CL_VT220)
31 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
32 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
33
34 #define TM_PUTTY (0xFFFF)
35
36 #define compatibility(x) \
37 if ( ((CL_##x)&compatibility_level) == 0 ) { \
38 termstate=TOPLEVEL; \
39 break; \
40 }
41 #define compatibility2(x,y) \
42 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
43 termstate=TOPLEVEL; \
44 break; \
45 }
46
47 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
48
49 static int compatibility_level = TM_PUTTY;
50
51 static tree234 *scrollback; /* lines scrolled off top of screen */
52 static tree234 *screen; /* lines on primary screen */
53 static tree234 *alt_screen; /* lines on alternate screen */
54 static int disptop; /* distance scrolled back (0 or -ve) */
55
56 static unsigned long *cpos; /* cursor position (convenience) */
57
58 static unsigned long *disptext; /* buffer of text on real screen */
59 static unsigned long *dispcurs; /* location of cursor on real screen */
60 static unsigned long curstype; /* type of cursor on real screen */
61
62 #define VBELL_TIMEOUT 100 /* millisecond len of visual bell */
63
64 struct beeptime {
65 struct beeptime *next;
66 long ticks;
67 };
68 static struct beeptime *beephead, *beeptail;
69 int nbeeps;
70 int beep_overloaded;
71 long lastbeep;
72
73 #define TSIZE (sizeof(unsigned long))
74 #define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
75
76 static unsigned long curr_attr, save_attr;
77 static unsigned long erase_char = ERASE_CHAR;
78
79 typedef struct {
80 int y, x;
81 } pos;
82 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
83 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
84 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
85 #define posdiff(p1,p2) ( ((p2).y - (p1).y) * (cols+1) + (p2).x - (p1).x )
86 #define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
87 #define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
88
89 static pos curs; /* cursor */
90 static pos savecurs; /* saved cursor position */
91 static int marg_t, marg_b; /* scroll margins */
92 static int dec_om; /* DEC origin mode flag */
93 static int wrap, wrapnext; /* wrap flags */
94 static int insert; /* insert-mode flag */
95 static int cset; /* 0 or 1: which char set */
96 static int save_cset, save_csattr; /* saved with cursor position */
97 static int rvideo; /* global reverse video flag */
98 static int rvbell_timeout; /* for ESC[?5hESC[?5l vbell */
99 static int cursor_on; /* cursor enabled flag */
100 static int reset_132; /* Flag ESC c resets to 80 cols */
101 static int use_bce; /* Use Background coloured erase */
102 static int blinker; /* When blinking is the cursor on ? */
103 static int tblinker; /* When the blinking text is on */
104 static int blink_is_real; /* Actually blink blinking text */
105 static int term_echoing; /* Does terminal want local echo? */
106 static int term_editing; /* Does terminal want local edit? */
107 static int vt52_bold; /* Force bold on non-bold colours */
108 static int utf_state; /* Is there a pending UTF-8 character */
109 static int utf_char; /* and what is it so far. */
110 static int utf_size; /* The size of the UTF character. */
111
112 static int xterm_mouse; /* send mouse messages to app */
113
114 static unsigned long cset_attr[2];
115
116 /*
117 * Saved settings on the alternate screen.
118 */
119 static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset;
120 static int alt_t, alt_b;
121 static int alt_which;
122
123 #define ARGS_MAX 32 /* max # of esc sequence arguments */
124 #define ARG_DEFAULT 0 /* if an arg isn't specified */
125 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
126 static int esc_args[ARGS_MAX];
127 static int esc_nargs;
128 static int esc_query;
129 #define ANSI(x,y) ((x)+((y)<<8))
130 #define ANSI_QUE(x) ANSI(x,TRUE)
131
132 #define OSC_STR_MAX 2048
133 static int osc_strlen;
134 static char osc_string[OSC_STR_MAX + 1];
135 static int osc_w;
136
137 static char id_string[1024] = "\033[?6c";
138
139 static unsigned char *tabs;
140
141 static enum {
142 TOPLEVEL,
143 SEEN_ESC,
144 SEEN_CSI,
145 SEEN_OSC,
146 SEEN_OSC_W,
147
148 DO_CTRLS,
149
150 SEEN_OSC_P,
151 OSC_STRING, OSC_MAYBE_ST,
152 VT52_ESC,
153 VT52_Y1,
154 VT52_Y2,
155 VT52_FG,
156 VT52_BG
157 } termstate;
158
159 static enum {
160 NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
161 } selstate;
162 static enum {
163 SM_CHAR, SM_WORD, SM_LINE
164 } selmode;
165 static pos selstart, selend, selanchor;
166
167 static short wordness[256] = {
168 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
169 0, 0, 0, 0, 0, 0, 0, 0, /* 01 */
170 0, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
171 2, 2, 1, 1, 1, 1, 1, 1, /* 23 */
172 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
173 2, 2, 2, 1, 1, 1, 1, 2, /* 45 */
174 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
175 2, 2, 2, 1, 1, 1, 1, 1, /* 67 */
176 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
177 1, 1, 1, 1, 1, 1, 1, 1, /* 89 */
178 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
179 1, 1, 1, 1, 1, 1, 1, 1, /* AB */
180 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
181 2, 2, 2, 2, 2, 2, 2, 2, /* CD */
182 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
183 2, 2, 2, 2, 2, 2, 2, 2, /* EF */
184 };
185
186 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
187 static wchar_t sel_nl[] = SEL_NL;
188 static wchar_t *paste_buffer = 0;
189 static int paste_len, paste_pos, paste_hold;
190
191 /*
192 * Internal prototypes.
193 */
194 static void do_paint(Context, int);
195 static void erase_lots(int, int, int);
196 static void swap_screen(int);
197 static void update_sbar(void);
198 static void deselect(void);
199 /* log session to file stuff ... */
200 static FILE *lgfp = NULL;
201 static void logtraffic(unsigned char c, int logmode);
202
203 /*
204 * Retrieve a line of the screen or of the scrollback, according to
205 * whether the y coordinate is non-negative or negative
206 * (respectively).
207 */
208 unsigned long *lineptr(int y, int lineno)
209 {
210 unsigned long *line, lineattrs;
211 tree234 *whichtree;
212 int i, treeindex, oldlen;
213
214 if (y >= 0) {
215 whichtree = screen;
216 treeindex = y;
217 } else {
218 whichtree = scrollback;
219 treeindex = y + count234(scrollback);
220 }
221 line = index234(whichtree, treeindex);
222
223 /* We assume that we don't screw up and retrieve something out of range. */
224 assert(line != NULL);
225
226 if (line[0] != cols) {
227 /*
228 * This line is the wrong length, which probably means it
229 * hasn't been accessed since a resize. Resize it now.
230 */
231 oldlen = line[0];
232 lineattrs = line[oldlen + 1];
233 delpos234(whichtree, treeindex);
234 line = srealloc(line, TSIZE * (2 + cols));
235 line[0] = cols;
236 for (i = oldlen; i < cols; i++)
237 line[i + 1] = ERASE_CHAR;
238 line[cols + 1] = lineattrs & LATTR_MODE;
239 addpos234(whichtree, line, treeindex);
240 }
241
242 return line + 1;
243 }
244
245 #define lineptr(x) lineptr(x,__LINE__)
246 /*
247 * Set up power-on settings for the terminal.
248 */
249 static void power_on(void)
250 {
251 curs.x = curs.y = alt_x = alt_y = savecurs.x = savecurs.y = 0;
252 alt_t = marg_t = 0;
253 if (rows != -1)
254 alt_b = marg_b = rows - 1;
255 else
256 alt_b = marg_b = 0;
257 if (cols != -1) {
258 int i;
259 for (i = 0; i < cols; i++)
260 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
261 }
262 alt_om = dec_om = cfg.dec_om;
263 alt_wnext = wrapnext = alt_ins = insert = FALSE;
264 alt_wrap = wrap = cfg.wrap_mode;
265 alt_cset = cset = 0;
266 cset_attr[0] = cset_attr[1] = ATTR_ASCII;
267 rvideo = 0;
268 in_vbell = FALSE;
269 cursor_on = 1;
270 big_cursor = 0;
271 save_attr = curr_attr = ATTR_DEFAULT;
272 term_editing = term_echoing = FALSE;
273 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
274 app_cursor_keys = cfg.app_cursor;
275 app_keypad_keys = cfg.app_keypad;
276 use_bce = cfg.bce;
277 blink_is_real = cfg.blinktext;
278 erase_char = ERASE_CHAR;
279 alt_which = 0;
280 {
281 int i;
282 for (i = 0; i < 256; i++)
283 wordness[i] = cfg.wordness[i];
284 }
285 if (screen) {
286 swap_screen(1);
287 erase_lots(FALSE, TRUE, TRUE);
288 swap_screen(0);
289 erase_lots(FALSE, TRUE, TRUE);
290 }
291 }
292
293 /*
294 * Force a screen update.
295 */
296 void term_update(void)
297 {
298 Context ctx;
299 ctx = get_ctx();
300 if (ctx) {
301 if ((seen_key_event && (cfg.scroll_on_key)) ||
302 (seen_disp_event && (cfg.scroll_on_disp))) {
303 disptop = 0; /* return to main screen */
304 seen_disp_event = seen_key_event = 0;
305 update_sbar();
306 }
307 do_paint(ctx, TRUE);
308 sys_cursor(curs.x, curs.y - disptop);
309 free_ctx(ctx);
310 }
311 }
312
313 /*
314 * Same as power_on(), but an external function.
315 */
316 void term_pwron(void)
317 {
318 power_on();
319 fix_cpos;
320 disptop = 0;
321 deselect();
322 term_update();
323 }
324
325 /*
326 * Clear the scrollback.
327 */
328 void term_clrsb(void)
329 {
330 unsigned long *line;
331 disptop = 0;
332 while ((line = delpos234(scrollback, 0)) != NULL) {
333 sfree(line);
334 }
335 update_sbar();
336 }
337
338 /*
339 * Initialise the terminal.
340 */
341 void term_init(void)
342 {
343 screen = alt_screen = scrollback = NULL;
344 disptop = 0;
345 disptext = dispcurs = NULL;
346 tabs = NULL;
347 deselect();
348 rows = cols = -1;
349 power_on();
350 beephead = beeptail = NULL;
351 nbeeps = 0;
352 lastbeep = FALSE;
353 beep_overloaded = FALSE;
354 }
355
356 /*
357 * Set up the terminal for a given size.
358 */
359 void term_size(int newrows, int newcols, int newsavelines)
360 {
361 tree234 *newsb, *newscreen, *newalt;
362 unsigned long *newdisp, *oldline, *line;
363 int i, j, ccols;
364 int sblen;
365 int save_alt_which = alt_which;
366
367 if (newrows == rows && newcols == cols && newsavelines == savelines)
368 return; /* nothing to do */
369
370 deselect();
371 swap_screen(0);
372
373 alt_t = marg_t = 0;
374 alt_b = marg_b = newrows - 1;
375
376 if (rows == -1) {
377 scrollback = newtree234(NULL);
378 screen = newtree234(NULL);
379 rows = 0;
380 }
381
382 /*
383 * Resize the screen and scrollback. We only need to shift
384 * lines around within our data structures, because lineptr()
385 * will take care of resizing each individual line if
386 * necessary. So:
387 *
388 * - If the new screen and the old screen differ in length, we
389 * must shunt some lines in from the scrollback or out to
390 * the scrollback.
391 *
392 * - If doing that fails to provide us with enough material to
393 * fill the new screen (i.e. the number of rows needed in
394 * the new screen exceeds the total number in the previous
395 * screen+scrollback), we must invent some blank lines to
396 * cover the gap.
397 *
398 * - Then, if the new scrollback length is less than the
399 * amount of scrollback we actually have, we must throw some
400 * away.
401 */
402 sblen = count234(scrollback);
403 /* Do this loop to expand the screen if newrows > rows */
404 for (i = rows; i < newrows; i++) {
405 if (sblen > 0) {
406 line = delpos234(scrollback, --sblen);
407 } else {
408 line = smalloc(TSIZE * (newcols + 2));
409 line[0] = newcols;
410 for (j = 0; j <= newcols; j++)
411 line[j + 1] = ERASE_CHAR;
412 }
413 addpos234(screen, line, 0);
414 }
415 /* Do this loop to shrink the screen if newrows < rows */
416 for (i = newrows; i < rows; i++) {
417 line = delpos234(screen, 0);
418 addpos234(scrollback, line, sblen++);
419 }
420 assert(count234(screen) == newrows);
421 while (sblen > newsavelines) {
422 line = delpos234(scrollback, 0);
423 sfree(line);
424 sblen--;
425 }
426 assert(count234(scrollback) <= newsavelines);
427 disptop = 0;
428
429 newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
430 for (i = 0; i < newrows * (newcols + 1); i++)
431 newdisp[i] = ATTR_INVALID;
432 sfree(disptext);
433 disptext = newdisp;
434 dispcurs = NULL;
435
436 newalt = newtree234(NULL);
437 for (i = 0; i < newrows; i++) {
438 line = smalloc(TSIZE * (newcols + 2));
439 line[0] = newcols;
440 for (j = 0; j <= newcols; j++)
441 line[j + 1] = erase_char;
442 addpos234(newalt, line, i);
443 }
444 if (alt_screen) {
445 while (NULL != (line = delpos234(alt_screen, 0)))
446 sfree(line);
447 freetree234(alt_screen);
448 }
449 alt_screen = newalt;
450
451 tabs = srealloc(tabs, newcols * sizeof(*tabs));
452 {
453 int i;
454 for (i = (cols > 0 ? cols : 0); i < newcols; i++)
455 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
456 }
457
458 if (rows > 0)
459 curs.y += newrows - rows;
460 if (curs.y < 0)
461 curs.y = 0;
462 if (curs.y >= newrows)
463 curs.y = newrows - 1;
464 if (curs.x >= newcols)
465 curs.x = newcols - 1;
466 alt_x = alt_y = 0;
467 wrapnext = alt_wnext = FALSE;
468
469 rows = newrows;
470 cols = newcols;
471 savelines = newsavelines;
472 fix_cpos;
473
474 swap_screen(save_alt_which);
475
476 update_sbar();
477 term_update();
478 }
479
480 /*
481 * Swap screens.
482 */
483 static void swap_screen(int which)
484 {
485 int t;
486 tree234 *ttr;
487
488 if (which == alt_which)
489 return;
490
491 alt_which = which;
492
493 ttr = alt_screen;
494 alt_screen = screen;
495 screen = ttr;
496 t = curs.x;
497 curs.x = alt_x;
498 alt_x = t;
499 t = curs.y;
500 curs.y = alt_y;
501 alt_y = t;
502 t = marg_t;
503 marg_t = alt_t;
504 alt_t = t;
505 t = marg_b;
506 marg_b = alt_b;
507 alt_b = t;
508 t = dec_om;
509 dec_om = alt_om;
510 alt_om = t;
511 t = wrap;
512 wrap = alt_wrap;
513 alt_wrap = t;
514 t = wrapnext;
515 wrapnext = alt_wnext;
516 alt_wnext = t;
517 t = insert;
518 insert = alt_ins;
519 alt_ins = t;
520 t = cset;
521 cset = alt_cset;
522 alt_cset = t;
523
524 fix_cpos;
525 }
526
527 /*
528 * Update the scroll bar.
529 */
530 static void update_sbar(void)
531 {
532 int nscroll;
533
534 nscroll = count234(scrollback);
535
536 set_sbar(nscroll + rows, nscroll + disptop, rows);
537 }
538
539 /*
540 * Check whether the region bounded by the two pointers intersects
541 * the scroll region, and de-select the on-screen selection if so.
542 */
543 static void check_selection(pos from, pos to)
544 {
545 if (poslt(from, selend) && poslt(selstart, to))
546 deselect();
547 }
548
549 /*
550 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
551 * for backward.) `sb' is TRUE if the scrolling is permitted to
552 * affect the scrollback buffer.
553 *
554 * NB this function invalidates all pointers into lines of the
555 * screen data structures. In particular, you MUST call fix_cpos
556 * after calling scroll() and before doing anything else that
557 * uses the cpos shortcut pointer.
558 */
559 static void scroll(int topline, int botline, int lines, int sb)
560 {
561 unsigned long *line, *line2;
562 int i;
563
564 if (topline != 0 || alt_which != 0)
565 sb = FALSE;
566
567 if (lines < 0) {
568 while (lines < 0) {
569 line = delpos234(screen, botline);
570 for (i = 0; i < cols; i++)
571 line[i + 1] = erase_char;
572 line[cols + 1] = 0;
573 addpos234(screen, line, topline);
574
575 if (selstart.y >= topline && selstart.y <= botline) {
576 selstart.y++;
577 if (selstart.y > botline) {
578 selstart.y = botline;
579 selstart.x = 0;
580 }
581 }
582 if (selend.y >= topline && selend.y <= botline) {
583 selend.y++;
584 if (selend.y > botline) {
585 selend.y = botline;
586 selend.x = 0;
587 }
588 }
589
590 lines++;
591 }
592 } else {
593 while (lines > 0) {
594 line = delpos234(screen, topline);
595 if (sb && savelines > 0) {
596 int sblen = count234(scrollback);
597 /*
598 * We must add this line to the scrollback. We'll
599 * remove a line from the top of the scrollback to
600 * replace it, or allocate a new one if the
601 * scrollback isn't full.
602 */
603 if (sblen == savelines) {
604 sblen--, line2 = delpos234(scrollback, 0);
605 } else {
606 line2 = smalloc(TSIZE * (cols + 2));
607 line2[0] = cols;
608 }
609 addpos234(scrollback, line, sblen);
610 line = line2;
611 }
612 for (i = 0; i < cols; i++)
613 line[i + 1] = erase_char;
614 line[cols + 1] = 0;
615 addpos234(screen, line, botline);
616
617 if (selstart.y >= topline && selstart.y <= botline) {
618 selstart.y--;
619 if (selstart.y < topline) {
620 selstart.y = topline;
621 selstart.x = 0;
622 }
623 }
624 if (selend.y >= topline && selend.y <= botline) {
625 selend.y--;
626 if (selend.y < topline) {
627 selend.y = topline;
628 selend.x = 0;
629 }
630 }
631
632 lines--;
633 }
634 }
635 }
636
637 /*
638 * Move the cursor to a given position, clipping at boundaries. We
639 * may or may not want to clip at the scroll margin: marg_clip is 0
640 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
641 * even _being_ outside the margins.
642 */
643 static void move(int x, int y, int marg_clip)
644 {
645 if (x < 0)
646 x = 0;
647 if (x >= cols)
648 x = cols - 1;
649 if (marg_clip) {
650 if ((curs.y >= marg_t || marg_clip == 2) && y < marg_t)
651 y = marg_t;
652 if ((curs.y <= marg_b || marg_clip == 2) && y > marg_b)
653 y = marg_b;
654 }
655 if (y < 0)
656 y = 0;
657 if (y >= rows)
658 y = rows - 1;
659 curs.x = x;
660 curs.y = y;
661 fix_cpos;
662 wrapnext = FALSE;
663 }
664
665 /*
666 * Save or restore the cursor and SGR mode.
667 */
668 static void save_cursor(int save)
669 {
670 if (save) {
671 savecurs = curs;
672 save_attr = curr_attr;
673 save_cset = cset;
674 save_csattr = cset_attr[cset];
675 } else {
676 curs = savecurs;
677 /* Make sure the window hasn't shrunk since the save */
678 if (curs.x >= cols)
679 curs.x = cols - 1;
680 if (curs.y >= rows)
681 curs.y = rows - 1;
682
683 curr_attr = save_attr;
684 cset = save_cset;
685 cset_attr[cset] = save_csattr;
686 fix_cpos;
687 if (use_bce)
688 erase_char = (' ' | (curr_attr & (ATTR_FGMASK | ATTR_BGMASK)));
689 }
690 }
691
692 /*
693 * Erase a large portion of the screen: the whole screen, or the
694 * whole line, or parts thereof.
695 */
696 static void erase_lots(int line_only, int from_begin, int to_end)
697 {
698 pos start, end;
699 int erase_lattr;
700 unsigned long *ldata;
701
702 if (line_only) {
703 start.y = curs.y;
704 start.x = 0;
705 end.y = curs.y + 1;
706 end.x = 0;
707 erase_lattr = FALSE;
708 } else {
709 start.y = 0;
710 start.x = 0;
711 end.y = rows;
712 end.x = 0;
713 erase_lattr = TRUE;
714 }
715 if (!from_begin) {
716 start = curs;
717 }
718 if (!to_end) {
719 end = curs;
720 }
721 check_selection(start, end);
722
723 /* Clear screen also forces a full window redraw, just in case. */
724 if (start.y == 0 && start.x == 0 && end.y == rows)
725 term_invalidate();
726
727 ldata = lineptr(start.y);
728 while (poslt(start, end)) {
729 if (start.y == cols && !erase_lattr)
730 ldata[start.x] &= ~LATTR_WRAPPED;
731 else
732 ldata[start.x] = erase_char;
733 if (incpos(start) && start.y < rows)
734 ldata = lineptr(start.y);
735 }
736 }
737
738 /*
739 * Insert or delete characters within the current line. n is +ve if
740 * insertion is desired, and -ve for deletion.
741 */
742 static void insch(int n)
743 {
744 int dir = (n < 0 ? -1 : +1);
745 int m;
746 pos cursplus;
747 unsigned long *ldata;
748
749 n = (n < 0 ? -n : n);
750 if (n > cols - curs.x)
751 n = cols - curs.x;
752 m = cols - curs.x - n;
753 cursplus.y = curs.y;
754 cursplus.x = curs.x + n;
755 check_selection(curs, cursplus);
756 ldata = lineptr(curs.y);
757 if (dir < 0) {
758 memmove(ldata + curs.x, ldata + curs.x + n, m * TSIZE);
759 while (n--)
760 ldata[curs.x + m++] = erase_char;
761 } else {
762 memmove(ldata + curs.x + n, ldata + curs.x, m * TSIZE);
763 while (n--)
764 ldata[curs.x + n] = erase_char;
765 }
766 }
767
768 /*
769 * Toggle terminal mode `mode' to state `state'. (`query' indicates
770 * whether the mode is a DEC private one or a normal one.)
771 */
772 static void toggle_mode(int mode, int query, int state)
773 {
774 long ticks;
775
776 if (query)
777 switch (mode) {
778 case 1: /* application cursor keys */
779 app_cursor_keys = state;
780 break;
781 case 2: /* VT52 mode */
782 vt52_mode = !state;
783 if (vt52_mode) {
784 blink_is_real = FALSE;
785 vt52_bold = FALSE;
786 } else {
787 blink_is_real = cfg.blinktext;
788 }
789 break;
790 case 3: /* 80/132 columns */
791 deselect();
792 request_resize(state ? 132 : 80, rows, 1);
793 reset_132 = state;
794 break;
795 case 5: /* reverse video */
796 /*
797 * Toggle reverse video. If we receive an OFF within the
798 * visual bell timeout period after an ON, we trigger an
799 * effective visual bell, so that ESC[?5hESC[?5l will
800 * always be an actually _visible_ visual bell.
801 */
802 ticks = GetTickCount();
803 if (rvideo && !state && /* we're turning it off */
804 ticks < rvbell_timeout) { /* and it's not long since it was turned on */
805 in_vbell = TRUE; /* we may clear rvideo but we set in_vbell */
806 if (vbell_timeout < rvbell_timeout) /* don't move vbell end forward */
807 vbell_timeout = rvbell_timeout; /* vbell end is at least then */
808 } else if (!rvideo && state) {
809 /* This is an ON, so we notice the time and save it. */
810 rvbell_timeout = ticks + VBELL_TIMEOUT;
811 }
812 rvideo = state;
813 seen_disp_event = TRUE;
814 if (state)
815 term_update();
816 break;
817 case 6: /* DEC origin mode */
818 dec_om = state;
819 break;
820 case 7: /* auto wrap */
821 wrap = state;
822 break;
823 case 8: /* auto key repeat */
824 repeat_off = !state;
825 break;
826 case 10: /* set local edit mode */
827 term_editing = state;
828 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
829 break;
830 case 25: /* enable/disable cursor */
831 compatibility2(OTHER, VT220);
832 cursor_on = state;
833 seen_disp_event = TRUE;
834 break;
835 case 47: /* alternate screen */
836 compatibility(OTHER);
837 deselect();
838 swap_screen(state);
839 disptop = 0;
840 break;
841 case 1000: /* xterm mouse 1 */
842 xterm_mouse = state ? 1 : 0;
843 set_raw_mouse_mode(state);
844 break;
845 case 1002: /* xterm mouse 2 */
846 xterm_mouse = state ? 2 : 0;
847 set_raw_mouse_mode(state);
848 break;
849 } else
850 switch (mode) {
851 case 4: /* set insert mode */
852 compatibility(VT102);
853 insert = state;
854 break;
855 case 12: /* set echo mode */
856 term_echoing = !state;
857 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
858 break;
859 case 20: /* Return sends ... */
860 cr_lf_return = state;
861 break;
862 case 34: /* Make cursor BIG */
863 compatibility2(OTHER, VT220);
864 big_cursor = !state;
865 }
866 }
867
868 /*
869 * Process an OSC sequence: set window title or icon name.
870 */
871 static void do_osc(void)
872 {
873 if (osc_w) {
874 while (osc_strlen--)
875 wordness[(unsigned char) osc_string[osc_strlen]] = esc_args[0];
876 } else {
877 osc_string[osc_strlen] = '\0';
878 switch (esc_args[0]) {
879 case 0:
880 case 1:
881 set_icon(osc_string);
882 if (esc_args[0] == 1)
883 break;
884 /* fall through: parameter 0 means set both */
885 case 2:
886 case 21:
887 set_title(osc_string);
888 break;
889 }
890 }
891 }
892
893 /*
894 * Remove everything currently in `inbuf' and stick it up on the
895 * in-memory display. There's a big state machine in here to
896 * process escape sequences...
897 */
898 void term_out(void)
899 {
900 int c, inbuf_reap;
901
902 for (inbuf_reap = 0; inbuf_reap < inbuf_head; inbuf_reap++) {
903 c = inbuf[inbuf_reap];
904
905 /*
906 * Optionally log the session traffic to a file. Useful for
907 * debugging and possibly also useful for actual logging.
908 */
909 logtraffic((unsigned char) c, LGTYP_DEBUG);
910
911 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
912 * be able to display 8-bit characters, but I'll let that go 'cause
913 * of i18n.
914 */
915
916 /* First see about all those translations. */
917 if (termstate == TOPLEVEL) {
918 if (utf)
919 switch (utf_state) {
920 case 0:
921 if (c < 0x80) {
922 /* I know; gotos are evil. This one is really bad!
923 * But before you try removing it follow the path of the
924 * sequence "0x5F 0xC0 0x71" with UTF and VTGraphics on.
925 */
926 /*
927 if (cfg.no_vt_graph_with_utf8) break;
928 */
929 goto evil_jump;
930 } else if ((c & 0xe0) == 0xc0) {
931 utf_size = utf_state = 1;
932 utf_char = (c & 0x1f);
933 } else if ((c & 0xf0) == 0xe0) {
934 utf_size = utf_state = 2;
935 utf_char = (c & 0x0f);
936 } else if ((c & 0xf8) == 0xf0) {
937 utf_size = utf_state = 3;
938 utf_char = (c & 0x07);
939 } else if ((c & 0xfc) == 0xf8) {
940 utf_size = utf_state = 4;
941 utf_char = (c & 0x03);
942 } else if ((c & 0xfe) == 0xfc) {
943 utf_size = utf_state = 5;
944 utf_char = (c & 0x01);
945 } else {
946 c = UCSERR;
947 break;
948 }
949 continue;
950 case 1:
951 case 2:
952 case 3:
953 case 4:
954 case 5:
955 if ((c & 0xC0) != 0x80) {
956 inbuf_reap--; /* This causes the faulting character */
957 c = UCSERR; /* to be logged twice - not really a */
958 utf_state = 0; /* serious problem. */
959 break;
960 }
961 utf_char = (utf_char << 6) | (c & 0x3f);
962 if (--utf_state)
963 continue;
964
965 c = utf_char;
966
967 /* Is somebody trying to be evil! */
968 if (c < 0x80 ||
969 (c < 0x800 && utf_size >= 2) ||
970 (c < 0x10000 && utf_size >= 3) ||
971 (c < 0x200000 && utf_size >= 4) ||
972 (c < 0x4000000 && utf_size >= 5))
973 c = UCSERR;
974
975 /* Unicode line separator and paragraph separator are CR-LF */
976 if (c == 0x2028 || c == 0x2029)
977 c = 0x85;
978
979 /* High controls are probably a Baaad idea too. */
980 if (c < 0xA0)
981 c = 0xFFFD;
982
983 /* The UTF-16 surrogates are not nice either. */
984 /* The standard give the option of decoding these:
985 * I don't want to! */
986 if (c >= 0xD800 && c < 0xE000)
987 c = UCSERR;
988
989 /* ISO 10646 characters now limited to UTF-16 range. */
990 if (c > 0x10FFFF)
991 c = UCSERR;
992
993 /* This is currently a TagPhobic application.. */
994 if (c >= 0xE0000 && c <= 0xE007F)
995 continue;
996
997 /* U+FEFF is best seen as a null. */
998 if (c == 0xFEFF)
999 continue;
1000 /* But U+FFFE is an error. */
1001 if (c == 0xFFFE || c == 0xFFFF)
1002 c = UCSERR;
1003
1004 /* Oops this is a 16bit implementation */
1005 if (c >= 0x10000)
1006 c = 0xFFFD;
1007 break;
1008 } else {
1009 evil_jump:;
1010 switch (cset_attr[cset]) {
1011 /*
1012 * Linedraw characters are different from 'ESC ( B'
1013 * only for a small range. For ones outside that
1014 * range, make sure we use the same font as well as
1015 * the same encoding.
1016 */
1017 case ATTR_LINEDRW:
1018 if (unitab_ctrl[c] != 0xFF)
1019 c = unitab_ctrl[c];
1020 else
1021 c = ((unsigned char) c) | ATTR_LINEDRW;
1022 break;
1023
1024 case ATTR_GBCHR:
1025 /* If UK-ASCII, make the '#' a LineDraw Pound */
1026 if (c == '#') {
1027 c = '}' | ATTR_LINEDRW;
1028 break;
1029 }
1030 /*FALLTHROUGH*/ case ATTR_ASCII:
1031 if (unitab_ctrl[c] != 0xFF)
1032 c = unitab_ctrl[c];
1033 else
1034 c = ((unsigned char) c) | ATTR_ASCII;
1035 break;
1036 }
1037 }
1038 }
1039
1040 /* How about C1 controls ? */
1041 if ((c & -32) == 0x80 && termstate < DO_CTRLS && !vt52_mode &&
1042 has_compat(VT220)) {
1043 termstate = SEEN_ESC;
1044 esc_query = FALSE;
1045 c = '@' + (c & 0x1F);
1046 }
1047
1048 /* Or the GL control. */
1049 if (c == '\177' && termstate < DO_CTRLS && has_compat(OTHER)) {
1050 if (curs.x && !wrapnext)
1051 curs.x--;
1052 wrapnext = FALSE;
1053 fix_cpos;
1054 *cpos = (' ' | curr_attr | ATTR_ASCII);
1055 } else
1056 /* Or normal C0 controls. */
1057 if ((c & -32) == 0 && termstate < DO_CTRLS) {
1058 switch (c) {
1059 case '\005': /* terminal type query */
1060 /* Strictly speaking this is VT100 but a VT100 defaults to
1061 * no response. Other terminals respond at their option.
1062 *
1063 * Don't put a CR in the default string as this tends to
1064 * upset some weird software.
1065 *
1066 * An xterm returns "xterm" (5 characters)
1067 */
1068 compatibility(ANSIMIN);
1069 {
1070 char abuf[256], *s, *d;
1071 int state = 0;
1072 for (s = cfg.answerback, d = abuf; *s; s++) {
1073 if (state) {
1074 if (*s >= 'a' && *s <= 'z')
1075 *d++ = (*s - ('a' - 1));
1076 else if ((*s >= '@' && *s <= '_') ||
1077 *s == '?' || (*s & 0x80))
1078 *d++ = ('@' ^ *s);
1079 else if (*s == '~')
1080 *d++ = '^';
1081 state = 0;
1082 } else if (*s == '^') {
1083 state = 1;
1084 } else
1085 *d++ = *s;
1086 }
1087 lpage_send(CP_ACP, abuf, d - abuf);
1088 }
1089 break;
1090 case '\007':
1091 {
1092 struct beeptime *newbeep;
1093 long ticks;
1094
1095 ticks = GetTickCount();
1096
1097 if (!beep_overloaded) {
1098 newbeep = smalloc(sizeof(struct beeptime));
1099 newbeep->ticks = ticks;
1100 newbeep->next = NULL;
1101 if (!beephead)
1102 beephead = newbeep;
1103 else
1104 beeptail->next = newbeep;
1105 beeptail = newbeep;
1106 nbeeps++;
1107 }
1108
1109 /*
1110 * Throw out any beeps that happened more than
1111 * t seconds ago.
1112 */
1113 while (beephead &&
1114 beephead->ticks < ticks - cfg.bellovl_t) {
1115 struct beeptime *tmp = beephead;
1116 beephead = tmp->next;
1117 sfree(tmp);
1118 if (!beephead)
1119 beeptail = NULL;
1120 nbeeps--;
1121 }
1122
1123 if (cfg.bellovl && beep_overloaded &&
1124 ticks - lastbeep >= cfg.bellovl_s) {
1125 /*
1126 * If we're currently overloaded and the
1127 * last beep was more than s seconds ago,
1128 * leave overload mode.
1129 */
1130 beep_overloaded = FALSE;
1131 } else if (cfg.bellovl && !beep_overloaded &&
1132 nbeeps >= cfg.bellovl_n) {
1133 /*
1134 * Now, if we have n or more beeps
1135 * remaining in the queue, go into overload
1136 * mode.
1137 */
1138 beep_overloaded = TRUE;
1139 }
1140 lastbeep = ticks;
1141
1142 /*
1143 * Perform an actual beep if we're not overloaded.
1144 */
1145 if ((!cfg.bellovl || !beep_overloaded)
1146 && cfg.beep != 0) {
1147 if (cfg.beep != 2)
1148 beep(cfg.beep);
1149 else if (cfg.beep == 2) {
1150 in_vbell = TRUE;
1151 vbell_timeout = ticks + VBELL_TIMEOUT;
1152 term_update();
1153 }
1154 }
1155 disptop = 0;
1156 }
1157 break;
1158 case '\b':
1159 if (curs.x == 0 && (curs.y == 0 || wrap == 0));
1160 else if (curs.x == 0 && curs.y > 0)
1161 curs.x = cols - 1, curs.y--;
1162 else if (wrapnext)
1163 wrapnext = FALSE;
1164 else
1165 curs.x--;
1166 fix_cpos;
1167 seen_disp_event = TRUE;
1168 break;
1169 case '\016':
1170 compatibility(VT100);
1171 cset = 1;
1172 break;
1173 case '\017':
1174 compatibility(VT100);
1175 cset = 0;
1176 break;
1177 case '\033':
1178 if (vt52_mode)
1179 termstate = VT52_ESC;
1180 else {
1181 compatibility(ANSIMIN);
1182 termstate = SEEN_ESC;
1183 esc_query = FALSE;
1184 }
1185 break;
1186 case '\r':
1187 curs.x = 0;
1188 wrapnext = FALSE;
1189 fix_cpos;
1190 seen_disp_event = TRUE;
1191 paste_hold = 0;
1192 logtraffic((unsigned char) c, LGTYP_ASCII);
1193 break;
1194 case '\014':
1195 if (has_compat(SCOANSI)) {
1196 move(0, 0, 0);
1197 erase_lots(FALSE, FALSE, TRUE);
1198 disptop = 0;
1199 wrapnext = FALSE;
1200 seen_disp_event = 1;
1201 break;
1202 }
1203 case '\013':
1204 compatibility(VT100);
1205 case '\n':
1206 if (curs.y == marg_b)
1207 scroll(marg_t, marg_b, 1, TRUE);
1208 else if (curs.y < rows - 1)
1209 curs.y++;
1210 if (cfg.lfhascr)
1211 curs.x = 0;
1212 fix_cpos;
1213 wrapnext = FALSE;
1214 seen_disp_event = 1;
1215 paste_hold = 0;
1216 logtraffic((unsigned char) c, LGTYP_ASCII);
1217 break;
1218 case '\t':
1219 {
1220 pos old_curs = curs;
1221 unsigned long *ldata = lineptr(curs.y);
1222
1223 do {
1224 curs.x++;
1225 } while (curs.x < cols - 1 && !tabs[curs.x]);
1226
1227 if ((ldata[cols] & LATTR_MODE) != LATTR_NORM) {
1228 if (curs.x >= cols / 2)
1229 curs.x = cols / 2 - 1;
1230 } else {
1231 if (curs.x >= cols)
1232 curs.x = cols - 1;
1233 }
1234
1235 fix_cpos;
1236 check_selection(old_curs, curs);
1237 }
1238 seen_disp_event = TRUE;
1239 break;
1240 }
1241 } else
1242 switch (termstate) {
1243 case TOPLEVEL:
1244 /* Only graphic characters get this far, ctrls are stripped above */
1245 if (wrapnext && wrap) {
1246 cpos[1] |= LATTR_WRAPPED;
1247 if (curs.y == marg_b)
1248 scroll(marg_t, marg_b, 1, TRUE);
1249 else if (curs.y < rows - 1)
1250 curs.y++;
1251 curs.x = 0;
1252 fix_cpos;
1253 wrapnext = FALSE;
1254 }
1255 if (insert)
1256 insch(1);
1257 if (selstate != NO_SELECTION) {
1258 pos cursplus = curs;
1259 incpos(cursplus);
1260 check_selection(curs, cursplus);
1261 }
1262 if ((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0)
1263 logtraffic((unsigned char) c, LGTYP_ASCII);
1264 {
1265 extern int wcwidth(wchar_t ucs);
1266 int width = 0;
1267 if (DIRECT_CHAR(c))
1268 width = 1;
1269 if (!width)
1270 width = wcwidth((wchar_t) c);
1271 switch (width) {
1272 case 2:
1273 if (curs.x + 1 != cols) {
1274 *cpos++ = c | ATTR_WIDE | curr_attr;
1275 *cpos++ = UCSWIDE | curr_attr;
1276 curs.x++;
1277 break;
1278 }
1279 case 1:
1280 *cpos++ = c | curr_attr;
1281 break;
1282 default:
1283 continue;
1284 }
1285 }
1286 curs.x++;
1287 if (curs.x == cols) {
1288 cpos--;
1289 curs.x--;
1290 wrapnext = TRUE;
1291 if (wrap && vt52_mode) {
1292 cpos[1] |= LATTR_WRAPPED;
1293 if (curs.y == marg_b)
1294 scroll(marg_t, marg_b, 1, TRUE);
1295 else if (curs.y < rows - 1)
1296 curs.y++;
1297 curs.x = 0;
1298 fix_cpos;
1299 wrapnext = FALSE;
1300 }
1301 }
1302 seen_disp_event = 1;
1303 break;
1304
1305 case OSC_MAYBE_ST:
1306 /*
1307 * This state is virtually identical to SEEN_ESC, with the
1308 * exception that we have an OSC sequence in the pipeline,
1309 * and _if_ we see a backslash, we process it.
1310 */
1311 if (c == '\\') {
1312 do_osc();
1313 termstate = TOPLEVEL;
1314 break;
1315 }
1316 /* else fall through */
1317 case SEEN_ESC:
1318 if (c >= ' ' && c <= '/') {
1319 if (esc_query)
1320 esc_query = -1;
1321 else
1322 esc_query = c;
1323 break;
1324 }
1325 termstate = TOPLEVEL;
1326 switch (ANSI(c, esc_query)) {
1327 case '[': /* enter CSI mode */
1328 termstate = SEEN_CSI;
1329 esc_nargs = 1;
1330 esc_args[0] = ARG_DEFAULT;
1331 esc_query = FALSE;
1332 break;
1333 case ']': /* xterm escape sequences */
1334 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1335 compatibility(OTHER);
1336 termstate = SEEN_OSC;
1337 esc_args[0] = 0;
1338 break;
1339 case '7': /* save cursor */
1340 compatibility(VT100);
1341 save_cursor(TRUE);
1342 break;
1343 case '8': /* restore cursor */
1344 compatibility(VT100);
1345 save_cursor(FALSE);
1346 seen_disp_event = TRUE;
1347 break;
1348 case '=':
1349 compatibility(VT100);
1350 app_keypad_keys = TRUE;
1351 break;
1352 case '>':
1353 compatibility(VT100);
1354 app_keypad_keys = FALSE;
1355 break;
1356 case 'D': /* exactly equivalent to LF */
1357 compatibility(VT100);
1358 if (curs.y == marg_b)
1359 scroll(marg_t, marg_b, 1, TRUE);
1360 else if (curs.y < rows - 1)
1361 curs.y++;
1362 fix_cpos;
1363 wrapnext = FALSE;
1364 seen_disp_event = TRUE;
1365 break;
1366 case 'E': /* exactly equivalent to CR-LF */
1367 compatibility(VT100);
1368 curs.x = 0;
1369 if (curs.y == marg_b)
1370 scroll(marg_t, marg_b, 1, TRUE);
1371 else if (curs.y < rows - 1)
1372 curs.y++;
1373 fix_cpos;
1374 wrapnext = FALSE;
1375 seen_disp_event = TRUE;
1376 break;
1377 case 'M': /* reverse index - backwards LF */
1378 compatibility(VT100);
1379 if (curs.y == marg_t)
1380 scroll(marg_t, marg_b, -1, TRUE);
1381 else if (curs.y > 0)
1382 curs.y--;
1383 fix_cpos;
1384 wrapnext = FALSE;
1385 seen_disp_event = TRUE;
1386 break;
1387 case 'Z': /* terminal type query */
1388 compatibility(VT100);
1389 ldisc_send(id_string, strlen(id_string));
1390 break;
1391 case 'c': /* restore power-on settings */
1392 compatibility(VT100);
1393 power_on();
1394 if (reset_132) {
1395 request_resize(80, rows, 1);
1396 reset_132 = 0;
1397 }
1398 fix_cpos;
1399 disptop = 0;
1400 seen_disp_event = TRUE;
1401 break;
1402 case 'H': /* set a tab */
1403 compatibility(VT100);
1404 tabs[curs.x] = TRUE;
1405 break;
1406
1407 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1408 compatibility(VT100);
1409 {
1410 unsigned long *ldata;
1411 int i, j;
1412 pos scrtop, scrbot;
1413
1414 for (i = 0; i < rows; i++) {
1415 ldata = lineptr(i);
1416 for (j = 0; j < cols; j++)
1417 ldata[j] = ATTR_DEFAULT | 'E';
1418 ldata[cols] = 0;
1419 }
1420 disptop = 0;
1421 seen_disp_event = TRUE;
1422 scrtop.x = scrtop.y = 0;
1423 scrbot.x = 0;
1424 scrbot.y = rows;
1425 check_selection(scrtop, scrbot);
1426 }
1427 break;
1428
1429 case ANSI('3', '#'):
1430 case ANSI('4', '#'):
1431 case ANSI('5', '#'):
1432 case ANSI('6', '#'):
1433 compatibility(VT100);
1434 {
1435 unsigned long nlattr;
1436 unsigned long *ldata;
1437 switch (ANSI(c, esc_query)) {
1438 case ANSI('3', '#'):
1439 nlattr = LATTR_TOP;
1440 break;
1441 case ANSI('4', '#'):
1442 nlattr = LATTR_BOT;
1443 break;
1444 case ANSI('5', '#'):
1445 nlattr = LATTR_NORM;
1446 break;
1447 case ANSI('6', '#'):
1448 nlattr = LATTR_WIDE;
1449 break;
1450 }
1451 ldata = lineptr(curs.y);
1452 ldata[cols] &= ~LATTR_MODE;
1453 ldata[cols] |= nlattr;
1454 }
1455 break;
1456
1457 case ANSI('A', '('):
1458 compatibility(VT100);
1459 cset_attr[0] = ATTR_GBCHR;
1460 break;
1461 case ANSI('B', '('):
1462 compatibility(VT100);
1463 cset_attr[0] = ATTR_ASCII;
1464 break;
1465 case ANSI('0', '('):
1466 compatibility(VT100);
1467 cset_attr[0] = ATTR_LINEDRW;
1468 break;
1469
1470 case ANSI('A', ')'):
1471 compatibility(VT100);
1472 cset_attr[1] = ATTR_GBCHR;
1473 break;
1474 case ANSI('B', ')'):
1475 compatibility(VT100);
1476 cset_attr[1] = ATTR_ASCII;
1477 break;
1478 case ANSI('0', ')'):
1479 compatibility(VT100);
1480 cset_attr[1] = ATTR_LINEDRW;
1481 break;
1482
1483 case ANSI('8', '%'): /* Old Linux code */
1484 case ANSI('G', '%'):
1485 compatibility(OTHER);
1486 utf = 1;
1487 break;
1488 case ANSI('@', '%'):
1489 compatibility(OTHER);
1490 if (line_codepage != CP_UTF8)
1491 utf = 0;
1492 break;
1493 }
1494 break;
1495 case SEEN_CSI:
1496 termstate = TOPLEVEL; /* default */
1497 if (isdigit(c)) {
1498 if (esc_nargs <= ARGS_MAX) {
1499 if (esc_args[esc_nargs - 1] == ARG_DEFAULT)
1500 esc_args[esc_nargs - 1] = 0;
1501 esc_args[esc_nargs - 1] =
1502 10 * esc_args[esc_nargs - 1] + c - '0';
1503 }
1504 termstate = SEEN_CSI;
1505 } else if (c == ';') {
1506 if (++esc_nargs <= ARGS_MAX)
1507 esc_args[esc_nargs - 1] = ARG_DEFAULT;
1508 termstate = SEEN_CSI;
1509 } else if (c < '@') {
1510 if (esc_query)
1511 esc_query = -1;
1512 else if (c == '?')
1513 esc_query = TRUE;
1514 else
1515 esc_query = c;
1516 termstate = SEEN_CSI;
1517 } else
1518 switch (ANSI(c, esc_query)) {
1519 case 'A': /* move up N lines */
1520 move(curs.x, curs.y - def(esc_args[0], 1), 1);
1521 seen_disp_event = TRUE;
1522 break;
1523 case 'e': /* move down N lines */
1524 compatibility(ANSI);
1525 case 'B':
1526 move(curs.x, curs.y + def(esc_args[0], 1), 1);
1527 seen_disp_event = TRUE;
1528 break;
1529 case 'a': /* move right N cols */
1530 compatibility(ANSI);
1531 case ANSI('c', '>'): /* report xterm version */
1532 compatibility(OTHER);
1533 /* this reports xterm version 136 so that VIM can
1534 use the drag messages from the mouse reporting */
1535 ldisc_send("\033[>0;136;0c", 11);
1536 break;
1537 case 'C':
1538 move(curs.x + def(esc_args[0], 1), curs.y, 1);
1539 seen_disp_event = TRUE;
1540 break;
1541 case 'D': /* move left N cols */
1542 move(curs.x - def(esc_args[0], 1), curs.y, 1);
1543 seen_disp_event = TRUE;
1544 break;
1545 case 'E': /* move down N lines and CR */
1546 compatibility(ANSI);
1547 move(0, curs.y + def(esc_args[0], 1), 1);
1548 seen_disp_event = TRUE;
1549 break;
1550 case 'F': /* move up N lines and CR */
1551 compatibility(ANSI);
1552 move(0, curs.y - def(esc_args[0], 1), 1);
1553 seen_disp_event = TRUE;
1554 break;
1555 case 'G':
1556 case '`': /* set horizontal posn */
1557 compatibility(ANSI);
1558 move(def(esc_args[0], 1) - 1, curs.y, 0);
1559 seen_disp_event = TRUE;
1560 break;
1561 case 'd': /* set vertical posn */
1562 compatibility(ANSI);
1563 move(curs.x,
1564 (dec_om ? marg_t : 0) + def(esc_args[0],
1565 1) - 1,
1566 (dec_om ? 2 : 0));
1567 seen_disp_event = TRUE;
1568 break;
1569 case 'H':
1570 case 'f': /* set horz and vert posns at once */
1571 if (esc_nargs < 2)
1572 esc_args[1] = ARG_DEFAULT;
1573 move(def(esc_args[1], 1) - 1,
1574 (dec_om ? marg_t : 0) + def(esc_args[0],
1575 1) - 1,
1576 (dec_om ? 2 : 0));
1577 seen_disp_event = TRUE;
1578 break;
1579 case 'J': /* erase screen or parts of it */
1580 {
1581 unsigned int i = def(esc_args[0], 0) + 1;
1582 if (i > 3)
1583 i = 0;
1584 erase_lots(FALSE, !!(i & 2), !!(i & 1));
1585 }
1586 disptop = 0;
1587 seen_disp_event = TRUE;
1588 break;
1589 case 'K': /* erase line or parts of it */
1590 {
1591 unsigned int i = def(esc_args[0], 0) + 1;
1592 if (i > 3)
1593 i = 0;
1594 erase_lots(TRUE, !!(i & 2), !!(i & 1));
1595 }
1596 seen_disp_event = TRUE;
1597 break;
1598 case 'L': /* insert lines */
1599 compatibility(VT102);
1600 if (curs.y <= marg_b)
1601 scroll(curs.y, marg_b, -def(esc_args[0], 1),
1602 FALSE);
1603 fix_cpos;
1604 seen_disp_event = TRUE;
1605 break;
1606 case 'M': /* delete lines */
1607 compatibility(VT102);
1608 if (curs.y <= marg_b)
1609 scroll(curs.y, marg_b, def(esc_args[0], 1),
1610 TRUE);
1611 fix_cpos;
1612 seen_disp_event = TRUE;
1613 break;
1614 case '@': /* insert chars */
1615 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1616 compatibility(VT102);
1617 insch(def(esc_args[0], 1));
1618 seen_disp_event = TRUE;
1619 break;
1620 case 'P': /* delete chars */
1621 compatibility(VT102);
1622 insch(-def(esc_args[0], 1));
1623 seen_disp_event = TRUE;
1624 break;
1625 case 'c': /* terminal type query */
1626 compatibility(VT100);
1627 /* This is the response for a VT102 */
1628 ldisc_send(id_string, strlen(id_string));
1629 break;
1630 case 'n': /* cursor position query */
1631 if (esc_args[0] == 6) {
1632 char buf[32];
1633 sprintf(buf, "\033[%d;%dR", curs.y + 1,
1634 curs.x + 1);
1635 ldisc_send(buf, strlen(buf));
1636 } else if (esc_args[0] == 5) {
1637 ldisc_send("\033[0n", 4);
1638 }
1639 break;
1640 case 'h': /* toggle modes to high */
1641 case ANSI_QUE('h'):
1642 compatibility(VT100);
1643 {
1644 int i;
1645 for (i = 0; i < esc_nargs; i++)
1646 toggle_mode(esc_args[i], esc_query, TRUE);
1647 }
1648 break;
1649 case 'l': /* toggle modes to low */
1650 case ANSI_QUE('l'):
1651 compatibility(VT100);
1652 {
1653 int i;
1654 for (i = 0; i < esc_nargs; i++)
1655 toggle_mode(esc_args[i], esc_query, FALSE);
1656 }
1657 break;
1658 case 'g': /* clear tabs */
1659 compatibility(VT100);
1660 if (esc_nargs == 1) {
1661 if (esc_args[0] == 0) {
1662 tabs[curs.x] = FALSE;
1663 } else if (esc_args[0] == 3) {
1664 int i;
1665 for (i = 0; i < cols; i++)
1666 tabs[i] = FALSE;
1667 }
1668 }
1669 break;
1670 case 'r': /* set scroll margins */
1671 compatibility(VT100);
1672 if (esc_nargs <= 2) {
1673 int top, bot;
1674 top = def(esc_args[0], 1) - 1;
1675 bot = (esc_nargs <= 1
1676 || esc_args[1] ==
1677 0 ? rows : def(esc_args[1], rows)) - 1;
1678 if (bot >= rows)
1679 bot = rows - 1;
1680 /* VTTEST Bug 9 - if region is less than 2 lines
1681 * don't change region.
1682 */
1683 if (bot - top > 0) {
1684 marg_t = top;
1685 marg_b = bot;
1686 curs.x = 0;
1687 /*
1688 * I used to think the cursor should be
1689 * placed at the top of the newly marginned
1690 * area. Apparently not: VMS TPU falls over
1691 * if so.
1692 *
1693 * Well actually it should for Origin mode - RDB
1694 */
1695 curs.y = (dec_om ? marg_t : 0);
1696 fix_cpos;
1697 seen_disp_event = TRUE;
1698 }
1699 }
1700 break;
1701 case 'm': /* set graphics rendition */
1702 {
1703 /*
1704 * A VT100 without the AVO only had one attribute, either
1705 * underline or reverse video depending on the cursor type,
1706 * this was selected by CSI 7m.
1707 *
1708 * case 2:
1709 * This is sometimes DIM, eg on the GIGI and Linux
1710 * case 8:
1711 * This is sometimes INVIS various ANSI.
1712 * case 21:
1713 * This like 22 disables BOLD, DIM and INVIS
1714 *
1715 * The ANSI colours appear on any terminal that has colour
1716 * (obviously) but the interaction between sgr0 and the
1717 * colours varies but is usually related to the background
1718 * colour erase item.
1719 * The interaction between colour attributes and the mono
1720 * ones is also very implementation dependent.
1721 *
1722 * The 39 and 49 attributes are likely to be unimplemented.
1723 */
1724 int i;
1725 for (i = 0; i < esc_nargs; i++) {
1726 switch (def(esc_args[i], 0)) {
1727 case 0: /* restore defaults */
1728 curr_attr = ATTR_DEFAULT;
1729 break;
1730 case 1: /* enable bold */
1731 compatibility(VT100AVO);
1732 curr_attr |= ATTR_BOLD;
1733 break;
1734 case 21: /* (enable double underline) */
1735 compatibility(OTHER);
1736 case 4: /* enable underline */
1737 compatibility(VT100AVO);
1738 curr_attr |= ATTR_UNDER;
1739 break;
1740 case 5: /* enable blink */
1741 compatibility(VT100AVO);
1742 curr_attr |= ATTR_BLINK;
1743 break;
1744 case 7: /* enable reverse video */
1745 curr_attr |= ATTR_REVERSE;
1746 break;
1747 case 22: /* disable bold */
1748 compatibility2(OTHER, VT220);
1749 curr_attr &= ~ATTR_BOLD;
1750 break;
1751 case 24: /* disable underline */
1752 compatibility2(OTHER, VT220);
1753 curr_attr &= ~ATTR_UNDER;
1754 break;
1755 case 25: /* disable blink */
1756 compatibility2(OTHER, VT220);
1757 curr_attr &= ~ATTR_BLINK;
1758 break;
1759 case 27: /* disable reverse video */
1760 compatibility2(OTHER, VT220);
1761 curr_attr &= ~ATTR_REVERSE;
1762 break;
1763 case 30:
1764 case 31:
1765 case 32:
1766 case 33:
1767 case 34:
1768 case 35:
1769 case 36:
1770 case 37:
1771 /* foreground */
1772 curr_attr &= ~ATTR_FGMASK;
1773 curr_attr |=
1774 (esc_args[i] - 30) << ATTR_FGSHIFT;
1775 break;
1776 case 39: /* default-foreground */
1777 curr_attr &= ~ATTR_FGMASK;
1778 curr_attr |= ATTR_DEFFG;
1779 break;
1780 case 40:
1781 case 41:
1782 case 42:
1783 case 43:
1784 case 44:
1785 case 45:
1786 case 46:
1787 case 47:
1788 /* background */
1789 curr_attr &= ~ATTR_BGMASK;
1790 curr_attr |=
1791 (esc_args[i] - 40) << ATTR_BGSHIFT;
1792 break;
1793 case 49: /* default-background */
1794 curr_attr &= ~ATTR_BGMASK;
1795 curr_attr |= ATTR_DEFBG;
1796 break;
1797 }
1798 }
1799 if (use_bce)
1800 erase_char =
1801 (' ' |
1802 (curr_attr &
1803 (ATTR_FGMASK | ATTR_BGMASK |
1804 ATTR_BLINK)));
1805 }
1806 break;
1807 case 's': /* save cursor */
1808 save_cursor(TRUE);
1809 break;
1810 case 'u': /* restore cursor */
1811 save_cursor(FALSE);
1812 seen_disp_event = TRUE;
1813 break;
1814 case 't': /* set page size - ie window height */
1815 /*
1816 * VT340/VT420 sequence DECSLPP, DEC only allows values
1817 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1818 * illegal values (eg first arg 1..9) for window changing
1819 * and reports.
1820 */
1821 compatibility(VT340TEXT);
1822 if (esc_nargs <= 1
1823 && (esc_args[0] < 1 || esc_args[0] >= 24)) {
1824 request_resize(cols, def(esc_args[0], 24), 0);
1825 deselect();
1826 }
1827 break;
1828 case 'S':
1829 compatibility(SCOANSI);
1830 scroll(marg_t, marg_b, def(esc_args[0], 1), TRUE);
1831 fix_cpos;
1832 wrapnext = FALSE;
1833 seen_disp_event = TRUE;
1834 break;
1835 case 'T':
1836 compatibility(SCOANSI);
1837 scroll(marg_t, marg_b, -def(esc_args[0], 1), TRUE);
1838 fix_cpos;
1839 wrapnext = FALSE;
1840 seen_disp_event = TRUE;
1841 break;
1842 case ANSI('|', '*'):
1843 /* VT420 sequence DECSNLS
1844 * Set number of lines on screen
1845 * VT420 uses VGA like hardware and can support any size in
1846 * reasonable range (24..49 AIUI) with no default specified.
1847 */
1848 compatibility(VT420);
1849 if (esc_nargs == 1 && esc_args[0] > 0) {
1850 request_resize(cols,
1851 def(esc_args[0], cfg.height),
1852 0);
1853 deselect();
1854 }
1855 break;
1856 case ANSI('|', '$'):
1857 /* VT340/VT420 sequence DECSCPP
1858 * Set number of columns per page
1859 * Docs imply range is only 80 or 132, but I'll allow any.
1860 */
1861 compatibility(VT340TEXT);
1862 if (esc_nargs <= 1) {
1863 request_resize(def(esc_args[0], cfg.width),
1864 rows, 0);
1865 deselect();
1866 }
1867 break;
1868 case 'X': /* write N spaces w/o moving cursor */
1869 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1870 compatibility(ANSIMIN);
1871 {
1872 int n = def(esc_args[0], 1);
1873 pos cursplus;
1874 unsigned long *p = cpos;
1875 if (n > cols - curs.x)
1876 n = cols - curs.x;
1877 cursplus = curs;
1878 cursplus.x += n;
1879 check_selection(curs, cursplus);
1880 while (n--)
1881 *p++ = erase_char;
1882 seen_disp_event = TRUE;
1883 }
1884 break;
1885 case 'x': /* report terminal characteristics */
1886 compatibility(VT100);
1887 {
1888 char buf[32];
1889 int i = def(esc_args[0], 0);
1890 if (i == 0 || i == 1) {
1891 strcpy(buf, "\033[2;1;1;112;112;1;0x");
1892 buf[2] += i;
1893 ldisc_send(buf, 20);
1894 }
1895 }
1896 break;
1897 case ANSI('L', '='):
1898 compatibility(OTHER);
1899 use_bce = (esc_args[0] <= 0);
1900 erase_char = ERASE_CHAR;
1901 if (use_bce)
1902 erase_char =
1903 (' ' |
1904 (curr_attr &
1905 (ATTR_FGMASK | ATTR_BGMASK)));
1906 break;
1907 case ANSI('E', '='):
1908 compatibility(OTHER);
1909 blink_is_real = (esc_args[0] >= 1);
1910 break;
1911 case ANSI('p', '"'):
1912 /* Allow the host to make this emulator a 'perfect' VT102.
1913 * This first appeared in the VT220, but we do need to get
1914 * back to PuTTY mode so I won't check it.
1915 *
1916 * The arg in 40..42,50 are a PuTTY extension.
1917 * The 2nd arg, 8bit vs 7bit is not checked.
1918 *
1919 * Setting VT102 mode should also change the Fkeys to
1920 * generate PF* codes as a real VT102 has no Fkeys.
1921 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1922 * send nothing.
1923 *
1924 * Note ESC c will NOT change this!
1925 */
1926
1927 switch (esc_args[0]) {
1928 case 61:
1929 compatibility_level &= ~TM_VTXXX;
1930 compatibility_level |= TM_VT102;
1931 break;
1932 case 62:
1933 compatibility_level &= ~TM_VTXXX;
1934 compatibility_level |= TM_VT220;
1935 break;
1936
1937 default:
1938 if (esc_args[0] > 60 && esc_args[0] < 70)
1939 compatibility_level |= TM_VTXXX;
1940 break;
1941
1942 case 40:
1943 compatibility_level &= TM_VTXXX;
1944 break;
1945 case 41:
1946 compatibility_level = TM_PUTTY;
1947 break;
1948 case 42:
1949 compatibility_level = TM_SCOANSI;
1950 break;
1951
1952 case ARG_DEFAULT:
1953 compatibility_level = TM_PUTTY;
1954 break;
1955 case 50:
1956 break;
1957 }
1958
1959 /* Change the response to CSI c */
1960 if (esc_args[0] == 50) {
1961 int i;
1962 char lbuf[64];
1963 strcpy(id_string, "\033[?");
1964 for (i = 1; i < esc_nargs; i++) {
1965 if (i != 1)
1966 strcat(id_string, ";");
1967 sprintf(lbuf, "%d", esc_args[i]);
1968 strcat(id_string, lbuf);
1969 }
1970 strcat(id_string, "c");
1971 }
1972 #if 0
1973 /* Is this a good idea ?
1974 * Well we should do a soft reset at this point ...
1975 */
1976 if (!has_compat(VT420) && has_compat(VT100)) {
1977 if (reset_132)
1978 request_resize(132, 24, 1);
1979 else
1980 request_resize(80, 24, 1);
1981 }
1982 #endif
1983 break;
1984 }
1985 break;
1986 case SEEN_OSC:
1987 osc_w = FALSE;
1988 switch (c) {
1989 case 'P': /* Linux palette sequence */
1990 termstate = SEEN_OSC_P;
1991 osc_strlen = 0;
1992 break;
1993 case 'R': /* Linux palette reset */
1994 palette_reset();
1995 term_invalidate();
1996 termstate = TOPLEVEL;
1997 break;
1998 case 'W': /* word-set */
1999 termstate = SEEN_OSC_W;
2000 osc_w = TRUE;
2001 break;
2002 case '0':
2003 case '1':
2004 case '2':
2005 case '3':
2006 case '4':
2007 case '5':
2008 case '6':
2009 case '7':
2010 case '8':
2011 case '9':
2012 esc_args[0] = 10 * esc_args[0] + c - '0';
2013 break;
2014 case 'L':
2015 /*
2016 * Grotty hack to support xterm and DECterm title
2017 * sequences concurrently.
2018 */
2019 if (esc_args[0] == 2) {
2020 esc_args[0] = 1;
2021 break;
2022 }
2023 /* else fall through */
2024 default:
2025 termstate = OSC_STRING;
2026 osc_strlen = 0;
2027 }
2028 break;
2029 case OSC_STRING:
2030 /*
2031 * This OSC stuff is EVIL. It takes just one character to get into
2032 * sysline mode and it's not initially obvious how to get out.
2033 * So I've added CR and LF as string aborts.
2034 * This shouldn't effect compatibility as I believe embedded
2035 * control characters are supposed to be interpreted (maybe?)
2036 * and they don't display anything useful anyway.
2037 *
2038 * -- RDB
2039 */
2040 if (c == '\n' || c == '\r') {
2041 termstate = TOPLEVEL;
2042 } else if (c == 0234 || c == '\007') {
2043 /*
2044 * These characters terminate the string; ST and BEL
2045 * terminate the sequence and trigger instant
2046 * processing of it, whereas ESC goes back to SEEN_ESC
2047 * mode unless it is followed by \, in which case it is
2048 * synonymous with ST in the first place.
2049 */
2050 do_osc();
2051 termstate = TOPLEVEL;
2052 } else if (c == '\033')
2053 termstate = OSC_MAYBE_ST;
2054 else if (osc_strlen < OSC_STR_MAX)
2055 osc_string[osc_strlen++] = c;
2056 break;
2057 case SEEN_OSC_P:
2058 {
2059 int max = (osc_strlen == 0 ? 21 : 16);
2060 int val;
2061 if (c >= '0' && c <= '9')
2062 val = c - '0';
2063 else if (c >= 'A' && c <= 'A' + max - 10)
2064 val = c - 'A' + 10;
2065 else if (c >= 'a' && c <= 'a' + max - 10)
2066 val = c - 'a' + 10;
2067 else
2068 termstate = TOPLEVEL;
2069 osc_string[osc_strlen++] = val;
2070 if (osc_strlen >= 7) {
2071 palette_set(osc_string[0],
2072 osc_string[1] * 16 + osc_string[2],
2073 osc_string[3] * 16 + osc_string[4],
2074 osc_string[5] * 16 + osc_string[6]);
2075 term_invalidate();
2076 termstate = TOPLEVEL;
2077 }
2078 }
2079 break;
2080 case SEEN_OSC_W:
2081 switch (c) {
2082 case '0':
2083 case '1':
2084 case '2':
2085 case '3':
2086 case '4':
2087 case '5':
2088 case '6':
2089 case '7':
2090 case '8':
2091 case '9':
2092 esc_args[0] = 10 * esc_args[0] + c - '0';
2093 break;
2094 default:
2095 termstate = OSC_STRING;
2096 osc_strlen = 0;
2097 }
2098 break;
2099 case VT52_ESC:
2100 termstate = TOPLEVEL;
2101 seen_disp_event = TRUE;
2102 switch (c) {
2103 case 'A':
2104 move(curs.x, curs.y - 1, 1);
2105 break;
2106 case 'B':
2107 move(curs.x, curs.y + 1, 1);
2108 break;
2109 case 'C':
2110 move(curs.x + 1, curs.y, 1);
2111 break;
2112 case 'D':
2113 move(curs.x - 1, curs.y, 1);
2114 break;
2115 /*
2116 * From the VT100 Manual
2117 * NOTE: The special graphics characters in the VT100
2118 * are different from those in the VT52
2119 *
2120 * From VT102 manual:
2121 * 137 _ Blank - Same
2122 * 140 ` Reserved - Humm.
2123 * 141 a Solid rectangle - Similar
2124 * 142 b 1/ - Top half of fraction for the
2125 * 143 c 3/ - subscript numbers below.
2126 * 144 d 5/
2127 * 145 e 7/
2128 * 146 f Degrees - Same
2129 * 147 g Plus or minus - Same
2130 * 150 h Right arrow
2131 * 151 i Ellipsis (dots)
2132 * 152 j Divide by
2133 * 153 k Down arrow
2134 * 154 l Bar at scan 0
2135 * 155 m Bar at scan 1
2136 * 156 n Bar at scan 2
2137 * 157 o Bar at scan 3 - Similar
2138 * 160 p Bar at scan 4 - Similar
2139 * 161 q Bar at scan 5 - Similar
2140 * 162 r Bar at scan 6 - Same
2141 * 163 s Bar at scan 7 - Similar
2142 * 164 t Subscript 0
2143 * 165 u Subscript 1
2144 * 166 v Subscript 2
2145 * 167 w Subscript 3
2146 * 170 x Subscript 4
2147 * 171 y Subscript 5
2148 * 172 z Subscript 6
2149 * 173 { Subscript 7
2150 * 174 | Subscript 8
2151 * 175 } Subscript 9
2152 * 176 ~ Paragraph
2153 *
2154 */
2155 case 'F':
2156 cset_attr[cset = 0] = ATTR_LINEDRW;
2157 break;
2158 case 'G':
2159 cset_attr[cset = 0] = ATTR_ASCII;
2160 break;
2161 case 'H':
2162 move(0, 0, 0);
2163 break;
2164 case 'I':
2165 if (curs.y == 0)
2166 scroll(0, rows - 1, -1, TRUE);
2167 else if (curs.y > 0)
2168 curs.y--;
2169 fix_cpos;
2170 wrapnext = FALSE;
2171 break;
2172 case 'J':
2173 erase_lots(FALSE, FALSE, TRUE);
2174 disptop = 0;
2175 break;
2176 case 'K':
2177 erase_lots(TRUE, FALSE, TRUE);
2178 break;
2179 #if 0
2180 case 'V':
2181 /* XXX Print cursor line */
2182 break;
2183 case 'W':
2184 /* XXX Start controller mode */
2185 break;
2186 case 'X':
2187 /* XXX Stop controller mode */
2188 break;
2189 #endif
2190 case 'Y':
2191 termstate = VT52_Y1;
2192 break;
2193 case 'Z':
2194 ldisc_send("\033/Z", 3);
2195 break;
2196 case '=':
2197 app_keypad_keys = TRUE;
2198 break;
2199 case '>':
2200 app_keypad_keys = FALSE;
2201 break;
2202 case '<':
2203 /* XXX This should switch to VT100 mode not current or default
2204 * VT mode. But this will only have effect in a VT220+
2205 * emulation.
2206 */
2207 vt52_mode = FALSE;
2208 blink_is_real = cfg.blinktext;
2209 break;
2210 #if 0
2211 case '^':
2212 /* XXX Enter auto print mode */
2213 break;
2214 case '_':
2215 /* XXX Exit auto print mode */
2216 break;
2217 case ']':
2218 /* XXX Print screen */
2219 break;
2220 #endif
2221
2222 #ifdef VT52_PLUS
2223 case 'E':
2224 /* compatibility(ATARI) */
2225 move(0, 0, 0);
2226 erase_lots(FALSE, FALSE, TRUE);
2227 disptop = 0;
2228 break;
2229 case 'L':
2230 /* compatibility(ATARI) */
2231 if (curs.y <= marg_b)
2232 scroll(curs.y, marg_b, -1, FALSE);
2233 break;
2234 case 'M':
2235 /* compatibility(ATARI) */
2236 if (curs.y <= marg_b)
2237 scroll(curs.y, marg_b, 1, TRUE);
2238 break;
2239 case 'b':
2240 /* compatibility(ATARI) */
2241 termstate = VT52_FG;
2242 break;
2243 case 'c':
2244 /* compatibility(ATARI) */
2245 termstate = VT52_BG;
2246 break;
2247 case 'd':
2248 /* compatibility(ATARI) */
2249 erase_lots(FALSE, TRUE, FALSE);
2250 disptop = 0;
2251 break;
2252 case 'e':
2253 /* compatibility(ATARI) */
2254 cursor_on = TRUE;
2255 break;
2256 case 'f':
2257 /* compatibility(ATARI) */
2258 cursor_on = FALSE;
2259 break;
2260 /* case 'j': Save cursor position - broken on ST */
2261 /* case 'k': Restore cursor position */
2262 case 'l':
2263 /* compatibility(ATARI) */
2264 erase_lots(TRUE, TRUE, TRUE);
2265 curs.x = 0;
2266 wrapnext = FALSE;
2267 fix_cpos;
2268 break;
2269 case 'o':
2270 /* compatibility(ATARI) */
2271 erase_lots(TRUE, TRUE, FALSE);
2272 break;
2273 case 'p':
2274 /* compatibility(ATARI) */
2275 curr_attr |= ATTR_REVERSE;
2276 break;
2277 case 'q':
2278 /* compatibility(ATARI) */
2279 curr_attr &= ~ATTR_REVERSE;
2280 break;
2281 case 'v': /* wrap Autowrap on - Wyse style */
2282 /* compatibility(ATARI) */
2283 wrap = 1;
2284 break;
2285 case 'w': /* Autowrap off */
2286 /* compatibility(ATARI) */
2287 wrap = 0;
2288 break;
2289
2290 case 'R':
2291 /* compatibility(OTHER) */
2292 vt52_bold = FALSE;
2293 curr_attr = ATTR_DEFAULT;
2294 if (use_bce)
2295 erase_char = (' ' |
2296 (curr_attr &
2297 (ATTR_FGMASK | ATTR_BGMASK |
2298 ATTR_BLINK)));
2299 break;
2300 case 'S':
2301 /* compatibility(VI50) */
2302 curr_attr |= ATTR_UNDER;
2303 break;
2304 case 'W':
2305 /* compatibility(VI50) */
2306 curr_attr &= ~ATTR_UNDER;
2307 break;
2308 case 'U':
2309 /* compatibility(VI50) */
2310 vt52_bold = TRUE;
2311 curr_attr |= ATTR_BOLD;
2312 break;
2313 case 'T':
2314 /* compatibility(VI50) */
2315 vt52_bold = FALSE;
2316 curr_attr &= ~ATTR_BOLD;
2317 break;
2318 #endif
2319 }
2320 break;
2321 case VT52_Y1:
2322 termstate = VT52_Y2;
2323 move(curs.x, c - ' ', 0);
2324 break;
2325 case VT52_Y2:
2326 termstate = TOPLEVEL;
2327 move(c - ' ', curs.y, 0);
2328 break;
2329
2330 #ifdef VT52_PLUS
2331 case VT52_FG:
2332 termstate = TOPLEVEL;
2333 curr_attr &= ~ATTR_FGMASK;
2334 curr_attr &= ~ATTR_BOLD;
2335 curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
2336 if ((c & 0x8) || vt52_bold)
2337 curr_attr |= ATTR_BOLD;
2338
2339 if (use_bce)
2340 erase_char = (' ' |
2341 (curr_attr &
2342 (ATTR_FGMASK | ATTR_BGMASK |
2343 ATTR_BLINK)));
2344 break;
2345 case VT52_BG:
2346 termstate = TOPLEVEL;
2347 curr_attr &= ~ATTR_BGMASK;
2348 curr_attr &= ~ATTR_BLINK;
2349 curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
2350
2351 /* Note: bold background */
2352 if (c & 0x8)
2353 curr_attr |= ATTR_BLINK;
2354
2355 if (use_bce)
2356 erase_char = (' ' |
2357 (curr_attr &
2358 (ATTR_FGMASK | ATTR_BGMASK |
2359 ATTR_BLINK)));
2360 break;
2361 #endif
2362 }
2363 if (selstate != NO_SELECTION) {
2364 pos cursplus = curs;
2365 incpos(cursplus);
2366 check_selection(curs, cursplus);
2367 }
2368 }
2369 inbuf_head = 0;
2370 }
2371
2372 #if 0
2373 /*
2374 * Compare two lines to determine whether they are sufficiently
2375 * alike to scroll-optimise one to the other. Return the degree of
2376 * similarity.
2377 */
2378 static int linecmp(unsigned long *a, unsigned long *b)
2379 {
2380 int i, n;
2381
2382 for (i = n = 0; i < cols; i++)
2383 n += (*a++ == *b++);
2384 return n;
2385 }
2386 #endif
2387
2388 /*
2389 * Given a context, update the window. Out of paranoia, we don't
2390 * allow WM_PAINT responses to do scrolling optimisations.
2391 */
2392 static void do_paint(Context ctx, int may_optimise)
2393 {
2394 int i, j, our_curs_y;
2395 unsigned long rv, cursor;
2396 pos scrpos;
2397 char ch[1024];
2398 long cursor_background = ERASE_CHAR;
2399 long ticks;
2400
2401 /*
2402 * Check the visual bell state.
2403 */
2404 if (in_vbell) {
2405 ticks = GetTickCount();
2406 if (ticks - vbell_timeout >= 0)
2407 in_vbell = FALSE;
2408 }
2409
2410 rv = (!rvideo ^ !in_vbell ? ATTR_REVERSE : 0);
2411
2412 /* Depends on:
2413 * screen array, disptop, scrtop,
2414 * selection, rv,
2415 * cfg.blinkpc, blink_is_real, tblinker,
2416 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
2417 */
2418
2419 /* Has the cursor position or type changed ? */
2420 if (cursor_on) {
2421 if (has_focus) {
2422 if (blinker || !cfg.blink_cur)
2423 cursor = TATTR_ACTCURS;
2424 else
2425 cursor = 0;
2426 } else
2427 cursor = TATTR_PASCURS;
2428 if (wrapnext)
2429 cursor |= TATTR_RIGHTCURS;
2430 } else
2431 cursor = 0;
2432 our_curs_y = curs.y - disptop;
2433
2434 if (dispcurs && (curstype != cursor ||
2435 dispcurs !=
2436 disptext + our_curs_y * (cols + 1) + curs.x)) {
2437 if (dispcurs > disptext && (dispcurs[-1] & ATTR_WIDE))
2438 dispcurs[-1] |= ATTR_INVALID;
2439 if ((*dispcurs & ATTR_WIDE))
2440 dispcurs[1] |= ATTR_INVALID;
2441 *dispcurs |= ATTR_INVALID;
2442 curstype = 0;
2443 }
2444 dispcurs = NULL;
2445
2446 /* The normal screen data */
2447 for (i = 0; i < rows; i++) {
2448 unsigned long *ldata;
2449 int lattr;
2450 int idx, dirty_line, dirty_run;
2451 unsigned long attr = 0;
2452 int updated_line = 0;
2453 int start = 0;
2454 int ccount = 0;
2455 int last_run_dirty = 0;
2456
2457 scrpos.y = i + disptop;
2458 ldata = lineptr(scrpos.y);
2459 lattr = (ldata[cols] & LATTR_MODE);
2460
2461 idx = i * (cols + 1);
2462 dirty_run = dirty_line = (ldata[cols] != disptext[idx + cols]);
2463 disptext[idx + cols] = ldata[cols];
2464
2465 for (j = 0; j < cols; j++, idx++) {
2466 unsigned long tattr, tchar;
2467 unsigned long *d = ldata + j;
2468 int break_run;
2469 scrpos.x = j;
2470
2471 tchar = (*d & (CHAR_MASK | CSET_MASK));
2472 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
2473 switch (tchar & CSET_MASK) {
2474 case ATTR_ASCII:
2475 tchar = unitab_line[tchar & 0xFF];
2476 break;
2477 case ATTR_LINEDRW:
2478 tchar = unitab_xterm[tchar & 0xFF];
2479 break;
2480 }
2481 tattr |= (tchar & CSET_MASK);
2482 tchar &= CHAR_MASK;
2483
2484 /* Video reversing things */
2485 tattr = (tattr ^ rv
2486 ^ (posle(selstart, scrpos) &&
2487 poslt(scrpos, selend) ? ATTR_REVERSE : 0));
2488
2489 /* 'Real' blinking ? */
2490 if (blink_is_real && (tattr & ATTR_BLINK)) {
2491 if (has_focus && tblinker) {
2492 tchar = ' ';
2493 tattr &= ~CSET_MASK;
2494 tattr |= ATTR_ACP;
2495 }
2496 tattr &= ~ATTR_BLINK;
2497 }
2498
2499 /* Cursor here ? Save the 'background' */
2500 if (i == our_curs_y && j == curs.x) {
2501 cursor_background = tattr | tchar;
2502 dispcurs = disptext + idx;
2503 }
2504
2505 if ((disptext[idx] ^ tattr) & ATTR_WIDE)
2506 dirty_line = TRUE;
2507
2508 break_run = (tattr != attr || j - start >= sizeof(ch));
2509
2510 /* Special hack for VT100 Linedraw glyphs */
2511 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
2512 && tchar <= 0xBD) break_run = TRUE;
2513
2514 if (!dbcs_screenfont && !dirty_line) {
2515 if ((tchar | tattr) == disptext[idx])
2516 break_run = TRUE;
2517 else if (!dirty_run && ccount == 1)
2518 break_run = TRUE;
2519 }
2520
2521 if (break_run) {
2522 if ((dirty_run || last_run_dirty) && ccount > 0) {
2523 do_text(ctx, start, i, ch, ccount, attr, lattr);
2524 updated_line = 1;
2525 }
2526 start = j;
2527 ccount = 0;
2528 attr = tattr;
2529 if (dbcs_screenfont)
2530 last_run_dirty = dirty_run;
2531 dirty_run = dirty_line;
2532 }
2533
2534 if ((tchar | tattr) != disptext[idx])
2535 dirty_run = TRUE;
2536 ch[ccount++] = (char) tchar;
2537 disptext[idx] = tchar | tattr;
2538
2539 /* If it's a wide char step along to the next one. */
2540 if (tattr & ATTR_WIDE) {
2541 if (++j < cols) {
2542 idx++;
2543 d++;
2544 /* Cursor is here ? Ouch! */
2545 if (i == our_curs_y && j == curs.x) {
2546 cursor_background = *d;
2547 dispcurs = disptext + idx;
2548 }
2549 if (disptext[idx] != *d)
2550 dirty_run = TRUE;
2551 disptext[idx] = *d;
2552 }
2553 }
2554 }
2555 if (dirty_run && ccount > 0) {
2556 do_text(ctx, start, i, ch, ccount, attr, lattr);
2557 updated_line = 1;
2558 }
2559
2560 /* Cursor on this line ? (and changed) */
2561 if (i == our_curs_y && (curstype != cursor || updated_line)) {
2562 ch[0] = (char) (cursor_background & CHAR_MASK);
2563 attr = (cursor_background & ATTR_MASK) | cursor;
2564 do_cursor(ctx, curs.x, i, ch, 1, attr, lattr);
2565 curstype = cursor;
2566 }
2567 }
2568 }
2569
2570 /*
2571 * Flick the switch that says if blinking things should be shown or hidden.
2572 */
2573
2574 void term_blink(int flg)
2575 {
2576 static long last_blink = 0;
2577 static long last_tblink = 0;
2578 long now, blink_diff;
2579
2580 now = GetTickCount();
2581 blink_diff = now - last_tblink;
2582
2583 /* Make sure the text blinks no more than 2Hz */
2584 if (blink_diff < 0 || blink_diff > 450) {
2585 last_tblink = now;
2586 tblinker = !tblinker;
2587 }
2588
2589 if (flg) {
2590 blinker = 1;
2591 last_blink = now;
2592 return;
2593 }
2594
2595 blink_diff = now - last_blink;
2596
2597 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
2598 if (blink_diff >= 0 && blink_diff < (long) GetCaretBlinkTime())
2599 return;
2600
2601 last_blink = now;
2602 blinker = !blinker;
2603 }
2604
2605 /*
2606 * Invalidate the whole screen so it will be repainted in full.
2607 */
2608 void term_invalidate(void)
2609 {
2610 int i;
2611
2612 for (i = 0; i < rows * (cols + 1); i++)
2613 disptext[i] = ATTR_INVALID;
2614 }
2615
2616 /*
2617 * Paint the window in response to a WM_PAINT message.
2618 */
2619 void term_paint(Context ctx, int l, int t, int r, int b)
2620 {
2621 int i, j, left, top, right, bottom;
2622
2623 left = l / font_width;
2624 right = (r - 1) / font_width;
2625 top = t / font_height;
2626 bottom = (b - 1) / font_height;
2627 for (i = top; i <= bottom && i < rows; i++) {
2628 if ((disptext[i * (cols + 1) + cols] & LATTR_MODE) == LATTR_NORM)
2629 for (j = left; j <= right && j < cols; j++)
2630 disptext[i * (cols + 1) + j] = ATTR_INVALID;
2631 else
2632 for (j = left / 2; j <= right / 2 + 1 && j < cols; j++)
2633 disptext[i * (cols + 1) + j] = ATTR_INVALID;
2634 }
2635
2636 /* This should happen soon enough, also for some reason it sometimes
2637 * fails to actually do anything when re-sizing ... painting the wrong
2638 * window perhaps ?
2639 do_paint (ctx, FALSE);
2640 */
2641 }
2642
2643 /*
2644 * Attempt to scroll the scrollback. The second parameter gives the
2645 * position we want to scroll to; the first is +1 to denote that
2646 * this position is relative to the beginning of the scrollback, -1
2647 * to denote it is relative to the end, and 0 to denote that it is
2648 * relative to the current position.
2649 */
2650 void term_scroll(int rel, int where)
2651 {
2652 int sbtop = -count234(scrollback);
2653
2654 disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : disptop) + where;
2655 if (disptop < sbtop)
2656 disptop = sbtop;
2657 if (disptop > 0)
2658 disptop = 0;
2659 update_sbar();
2660 term_update();
2661 }
2662
2663 static void clipme(pos top, pos bottom)
2664 {
2665 wchar_t *workbuf;
2666 wchar_t *wbptr; /* where next char goes within workbuf */
2667 int wblen = 0; /* workbuf len */
2668 int buflen; /* amount of memory allocated to workbuf */
2669
2670 buflen = 5120; /* Default size */
2671 workbuf = smalloc(buflen * sizeof(wchar_t));
2672 wbptr = workbuf; /* start filling here */
2673
2674 while (poslt(top, bottom)) {
2675 int nl = FALSE;
2676 unsigned long *ldata = lineptr(top.y);
2677 pos nlpos;
2678
2679 nlpos.y = top.y;
2680 nlpos.x = cols;
2681
2682 if (!(ldata[cols] & LATTR_WRAPPED)) {
2683 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
2684 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
2685 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
2686 && poslt(top, nlpos))
2687 decpos(nlpos);
2688 if (poslt(nlpos, bottom))
2689 nl = TRUE;
2690 }
2691 while (poslt(top, bottom) && poslt(top, nlpos)) {
2692 #if 0
2693 char cbuf[16], *p;
2694 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
2695 #else
2696 wchar_t cbuf[16], *p;
2697 int uc = (ldata[top.x] & 0xFFFF);
2698 int set, c;
2699
2700 if (uc == UCSWIDE) {
2701 top.x++;
2702 continue;
2703 }
2704
2705 switch (uc & CSET_MASK) {
2706 case ATTR_LINEDRW:
2707 if (!cfg.rawcnp) {
2708 uc = unitab_xterm[uc & 0xFF];
2709 break;
2710 }
2711 case ATTR_ASCII:
2712 uc = unitab_line[uc & 0xFF];
2713 break;
2714 }
2715 switch (uc & CSET_MASK) {
2716 case ATTR_ACP:
2717 uc = unitab_font[uc & 0xFF];
2718 break;
2719 case ATTR_OEMCP:
2720 uc = unitab_oemcp[uc & 0xFF];
2721 break;
2722 }
2723
2724 set = (uc & CSET_MASK);
2725 c = (uc & CHAR_MASK);
2726 cbuf[0] = uc;
2727 cbuf[1] = 0;
2728
2729 if (DIRECT_FONT(uc)) {
2730 if (c >= ' ' && c != 0x7F) {
2731 unsigned char buf[4];
2732 WCHAR wbuf[4];
2733 int rv;
2734 if (IsDBCSLeadByteEx(font_codepage, (BYTE) c)) {
2735 buf[0] = c;
2736 buf[1] = (unsigned char) ldata[top.x + 1];
2737 rv = MultiByteToWideChar(font_codepage,
2738 0, buf, 2, wbuf, 4);
2739 top.x++;
2740 } else {
2741 buf[0] = c;
2742 rv = MultiByteToWideChar(font_codepage,
2743 0, buf, 1, wbuf, 4);
2744 }
2745
2746 if (rv > 0) {
2747 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
2748 cbuf[rv] = 0;
2749 }
2750 }
2751 }
2752 #endif
2753
2754 for (p = cbuf; *p; p++) {
2755 /* Enough overhead for trailing NL and nul */
2756 if (wblen >= buflen - 16) {
2757 workbuf =
2758 srealloc(workbuf,
2759 sizeof(wchar_t) * (buflen += 100));
2760 wbptr = workbuf + wblen;
2761 }
2762 wblen++;
2763 *wbptr++ = *p;
2764 }
2765 top.x++;
2766 }
2767 if (nl) {
2768 int i;
2769 for (i = 0; i < sel_nl_sz; i++) {
2770 wblen++;
2771 *wbptr++ = sel_nl[i];
2772 }
2773 }
2774 top.y++;
2775 top.x = 0;
2776 }
2777 wblen++;
2778 *wbptr++ = 0;
2779 write_clip(workbuf, wblen, FALSE); /* transfer to clipboard */
2780 if (buflen > 0) /* indicates we allocated this buffer */
2781 sfree(workbuf);
2782 }
2783
2784 void term_copyall(void)
2785 {
2786 pos top;
2787 top.y = -count234(scrollback);
2788 top.x = 0;
2789 clipme(top, curs);
2790 }
2791
2792 /*
2793 * The wordness array is mainly for deciding the disposition of the US-ASCII
2794 * characters.
2795 */
2796 static int wordtype(int uc)
2797 {
2798 static struct {
2799 int start, end, ctype;
2800 } *wptr, ucs_words[] = {
2801 {
2802 128, 160, 0}, {
2803 161, 191, 1}, {
2804 215, 215, 1}, {
2805 247, 247, 1}, {
2806 0x037e, 0x037e, 1}, /* Greek question mark */
2807 {
2808 0x0387, 0x0387, 1}, /* Greek ano teleia */
2809 {
2810 0x055a, 0x055f, 1}, /* Armenian punctuation */
2811 {
2812 0x0589, 0x0589, 1}, /* Armenian full stop */
2813 {
2814 0x0700, 0x070d, 1}, /* Syriac punctuation */
2815 {
2816 0x104a, 0x104f, 1}, /* Myanmar punctuation */
2817 {
2818 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
2819 {
2820 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
2821 {
2822 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
2823 {
2824 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
2825 {
2826 0x1800, 0x180a, 1}, /* Mongolian punctuation */
2827 {
2828 0x2000, 0x200a, 0}, /* Various spaces */
2829 {
2830 0x2070, 0x207f, 2}, /* superscript */
2831 {
2832 0x2080, 0x208f, 2}, /* subscript */
2833 {
2834 0x200b, 0x27ff, 1}, /* punctuation and symbols */
2835 {
2836 0x3000, 0x3000, 0}, /* ideographic space */
2837 {
2838 0x3001, 0x3020, 1}, /* ideographic punctuation */
2839 {
2840 0x303f, 0x309f, 3}, /* Hiragana */
2841 {
2842 0x30a0, 0x30ff, 3}, /* Katakana */
2843 {
2844 0x3300, 0x9fff, 3}, /* CJK Ideographs */
2845 {
2846 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
2847 {
2848 0xf900, 0xfaff, 3}, /* CJK Ideographs */
2849 {
2850 0xfe30, 0xfe6b, 1}, /* punctuation forms */
2851 {
2852 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
2853 {
2854 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
2855 {
2856 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
2857 {
2858 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
2859 {
2860 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
2861 {
2862 0, 0, 0}
2863 };
2864
2865 uc &= (CSET_MASK | CHAR_MASK);
2866
2867 switch (uc & CSET_MASK) {
2868 case ATTR_LINEDRW:
2869 uc = unitab_xterm[uc & 0xFF];
2870 break;
2871 case ATTR_ASCII:
2872 uc = unitab_line[uc & 0xFF];
2873 break;
2874 }
2875 switch (uc & CSET_MASK) {
2876 case ATTR_ACP:
2877 uc = unitab_font[uc & 0xFF];
2878 break;
2879 case ATTR_OEMCP:
2880 uc = unitab_oemcp[uc & 0xFF];
2881 break;
2882 }
2883
2884 if (uc < 0x80)
2885 return wordness[uc];
2886
2887 for (wptr = ucs_words; wptr->start; wptr++) {
2888 if (uc >= wptr->start && uc <= wptr->end)
2889 return wptr->ctype;
2890 }
2891
2892 return 2;
2893 }
2894
2895 /*
2896 * Spread the selection outwards according to the selection mode.
2897 */
2898 static pos sel_spread_half(pos p, int dir)
2899 {
2900 unsigned long *ldata;
2901 short wvalue;
2902
2903 ldata = lineptr(p.y);
2904
2905 switch (selmode) {
2906 case SM_CHAR:
2907 /*
2908 * In this mode, every character is a separate unit, except
2909 * for runs of spaces at the end of a non-wrapping line.
2910 */
2911 if (!(ldata[cols] & LATTR_WRAPPED)) {
2912 unsigned long *q = ldata + cols;
2913 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
2914 q--;
2915 if (q == ldata + cols)
2916 q--;
2917 if (p.x >= q - ldata)
2918 p.x = (dir == -1 ? q - ldata : cols - 1);
2919 }
2920 break;
2921 case SM_WORD:
2922 /*
2923 * In this mode, the units are maximal runs of characters
2924 * whose `wordness' has the same value.
2925 */
2926 wvalue = wordtype(ldata[p.x]);
2927 if (dir == +1) {
2928 while (p.x < cols && wordtype(ldata[p.x + 1]) == wvalue)
2929 p.x++;
2930 } else {
2931 while (p.x > 0 && wordtype(ldata[p.x - 1]) == wvalue)
2932 p.x--;
2933 }
2934 break;
2935 case SM_LINE:
2936 /*
2937 * In this mode, every line is a unit.
2938 */
2939 p.x = (dir == -1 ? 0 : cols - 1);
2940 break;
2941 }
2942 return p;
2943 }
2944
2945 static void sel_spread(void)
2946 {
2947 selstart = sel_spread_half(selstart, -1);
2948 decpos(selend);
2949 selend = sel_spread_half(selend, +1);
2950 incpos(selend);
2951 }
2952
2953 void term_mouse(Mouse_Button b, Mouse_Action a, int x, int y,
2954 int shift, int ctrl)
2955 {
2956 pos selpoint;
2957 unsigned long *ldata;
2958
2959 if (y < 0)
2960 y = 0;
2961 if (y >= rows)
2962 y = rows - 1;
2963 if (x < 0) {
2964 if (y > 0) {
2965 x = cols - 1;
2966 y--;
2967 } else
2968 x = 0;
2969 }
2970 if (x >= cols)
2971 x = cols - 1;
2972
2973 selpoint.y = y + disptop;
2974 selpoint.x = x;
2975 ldata = lineptr(selpoint.y);
2976 if ((ldata[cols] & LATTR_MODE) != LATTR_NORM)
2977 selpoint.x /= 2;
2978
2979 if (xterm_mouse) {
2980 int encstate = 0, r, c;
2981 char abuf[16];
2982 static int is_down = 0;
2983
2984 switch (b) {
2985 case MBT_LEFT:
2986 encstate = 0x20; /* left button down */
2987 break;
2988 case MBT_MIDDLE:
2989 encstate = 0x21;
2990 break;
2991 case MBT_RIGHT:
2992 encstate = 0x22;
2993 break;
2994 case MBT_WHEEL_UP:
2995 encstate = 0x60;
2996 break;
2997 case MBT_WHEEL_DOWN:
2998 encstate = 0x61;
2999 break;
3000 }
3001 switch (a) {
3002 case MA_DRAG:
3003 if (xterm_mouse == 1)
3004 return;
3005 encstate += 0x20;
3006 break;
3007 case MA_RELEASE:
3008 encstate = 0x23;
3009 is_down = 0;
3010 break;
3011 case MA_CLICK:
3012 if (is_down == b)
3013 return;
3014 is_down = b;
3015 break;
3016 }
3017 if (shift)
3018 encstate += 0x04;
3019 if (ctrl)
3020 encstate += 0x10;
3021 r = y + 33;
3022 c = x + 33;
3023
3024 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
3025 ldisc_send(abuf, 6);
3026 return;
3027 }
3028
3029 b = translate_button(b);
3030
3031 if (b == MBT_SELECT && a == MA_CLICK) {
3032 deselect();
3033 selstate = ABOUT_TO;
3034 selanchor = selpoint;
3035 selmode = SM_CHAR;
3036 } else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
3037 deselect();
3038 selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
3039 selstate = DRAGGING;
3040 selstart = selanchor = selpoint;
3041 selend = selstart;
3042 incpos(selend);
3043 sel_spread();
3044 } else if ((b == MBT_SELECT && a == MA_DRAG) ||
3045 (b == MBT_EXTEND && a != MA_RELEASE)) {
3046 if (selstate == ABOUT_TO && poseq(selanchor, selpoint))
3047 return;
3048 if (b == MBT_EXTEND && a != MA_DRAG && selstate == SELECTED) {
3049 if (posdiff(selpoint, selstart) <
3050 posdiff(selend, selstart) / 2) {
3051 selanchor = selend;
3052 decpos(selanchor);
3053 } else {
3054 selanchor = selstart;
3055 }
3056 selstate = DRAGGING;
3057 }
3058 if (selstate != ABOUT_TO && selstate != DRAGGING)
3059 selanchor = selpoint;
3060 selstate = DRAGGING;
3061 if (poslt(selpoint, selanchor)) {
3062 selstart = selpoint;
3063 selend = selanchor;
3064 incpos(selend);
3065 } else {
3066 selstart = selanchor;
3067 selend = selpoint;
3068 incpos(selend);
3069 }
3070 sel_spread();
3071 } else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
3072 if (selstate == DRAGGING) {
3073 /*
3074 * We've completed a selection. We now transfer the
3075 * data to the clipboard.
3076 */
3077 clipme(selstart, selend);
3078 selstate = SELECTED;
3079 } else
3080 selstate = NO_SELECTION;
3081 } else if (b == MBT_PASTE
3082 && (a == MA_CLICK || a == MA_2CLK || a == MA_3CLK)) {
3083 wchar_t *data;
3084 int len;
3085
3086 get_clip(&data, &len);
3087 if (data) {
3088 wchar_t *p, *q;
3089
3090 if (paste_buffer)
3091 sfree(paste_buffer);
3092 paste_pos = paste_hold = paste_len = 0;
3093 paste_buffer = smalloc(len * sizeof(wchar_t));
3094
3095 p = q = data;
3096 while (p < data + len) {
3097 while (p < data + len &&
3098 !(p <= data + len - sel_nl_sz &&
3099 !memcmp(p, sel_nl, sizeof(sel_nl))))
3100 p++;
3101
3102 {
3103 int i;
3104 for (i = 0; i < p - q; i++) {
3105 paste_buffer[paste_len++] = q[i];
3106 }
3107 }
3108
3109 if (p <= data + len - sel_nl_sz &&
3110 !memcmp(p, sel_nl, sizeof(sel_nl))) {
3111 paste_buffer[paste_len++] = '\r';
3112 p += sel_nl_sz;
3113 }
3114 q = p;
3115 }
3116
3117 /* Assume a small paste will be OK in one go. */
3118 if (paste_len < 256) {
3119 luni_send(paste_buffer, paste_len);
3120 if (paste_buffer)
3121 sfree(paste_buffer);
3122 paste_buffer = 0;
3123 paste_pos = paste_hold = paste_len = 0;
3124 }
3125 }
3126 get_clip(NULL, NULL);
3127 }
3128
3129 term_update();
3130 }
3131
3132 void term_nopaste()
3133 {
3134 if (paste_len == 0)
3135 return;
3136 sfree(paste_buffer);
3137 paste_buffer = 0;
3138 paste_len = 0;
3139 }
3140
3141 void term_paste()
3142 {
3143 static long last_paste = 0;
3144 long now, paste_diff;
3145
3146 if (paste_len == 0)
3147 return;
3148
3149 /* Don't wait forever to paste */
3150 if (paste_hold) {
3151 now = GetTickCount();
3152 paste_diff = now - last_paste;
3153 if (paste_diff >= 0 && paste_diff < 450)
3154 return;
3155 }
3156 paste_hold = 0;
3157
3158 while (paste_pos < paste_len) {
3159 int n = 0;
3160 while (n + paste_pos < paste_len) {
3161 if (paste_buffer[paste_pos + n++] == '\r')
3162 break;
3163 }
3164 luni_send(paste_buffer + paste_pos, n);
3165 paste_pos += n;
3166
3167 if (paste_pos < paste_len) {
3168 paste_hold = 1;
3169 return;
3170 }
3171 }
3172 sfree(paste_buffer);
3173 paste_buffer = 0;
3174 paste_len = 0;
3175 }
3176
3177 static void deselect(void)
3178 {
3179 selstate = NO_SELECTION;
3180 selstart.x = selstart.y = selend.x = selend.y = 0;
3181 }
3182
3183 void term_deselect(void)
3184 {
3185 deselect();
3186 term_update();
3187 }
3188
3189 int term_ldisc(int option)
3190 {
3191 if (option == LD_ECHO)
3192 return term_echoing;
3193 if (option == LD_EDIT)
3194 return term_editing;
3195 return FALSE;
3196 }
3197
3198 /*
3199 * from_backend(), to get data from the backend for the terminal.
3200 */
3201 void from_backend(int is_stderr, char *data, int len)
3202 {
3203 while (len--) {
3204 if (inbuf_head >= INBUF_SIZE)
3205 term_out();
3206 inbuf[inbuf_head++] = *data++;
3207 }
3208 }
3209
3210 /*
3211 * Log session traffic.
3212 */
3213 void logtraffic(unsigned char c, int logmode)
3214 {
3215 if (cfg.logtype > 0) {
3216 if (cfg.logtype == logmode) {
3217 /* deferred open file from pgm start? */
3218 if (!lgfp)
3219 logfopen();
3220 if (lgfp)
3221 fputc(c, lgfp);
3222 }
3223 }
3224 }
3225
3226 /* open log file append/overwrite mode */
3227 void logfopen(void)
3228 {
3229 char buf[256];
3230 time_t t;
3231 struct tm *tm;
3232 char writemod[4];
3233
3234 if (!cfg.logtype)
3235 return;
3236 sprintf(writemod, "wb"); /* default to rewrite */
3237 lgfp = fopen(cfg.logfilename, "r"); /* file already present? */
3238 if (lgfp) {
3239 int i;
3240 fclose(lgfp);
3241 i = askappend(cfg.logfilename);
3242 if (i == 1)
3243 writemod[0] = 'a'; /* set append mode */
3244 else if (i == 0) { /* cancelled */
3245 lgfp = NULL;
3246 cfg.logtype = 0; /* disable logging */
3247 return;
3248 }
3249 }
3250
3251 lgfp = fopen(cfg.logfilename, writemod);
3252 if (lgfp) { /* enter into event log */
3253 sprintf(buf, "%s session log (%s mode) to file : ",
3254 (writemod[0] == 'a') ? "Appending" : "Writing new",
3255 (cfg.logtype == LGTYP_ASCII ? "ASCII" :
3256 cfg.logtype == LGTYP_DEBUG ? "raw" : "<ukwn>"));
3257 /* Make sure we do not exceed the output buffer size */
3258 strncat(buf, cfg.logfilename, 128);
3259 buf[strlen(buf)] = '\0';
3260 logevent(buf);
3261
3262 /* --- write header line iinto log file */
3263 fputs("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp);
3264 time(&t);
3265 tm = localtime(&t);
3266 strftime(buf, 24, "%Y.%m.%d %H:%M:%S", tm);
3267 fputs(buf, lgfp);
3268 fputs(" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp);
3269 }
3270 }
3271
3272 void logfclose(void)
3273 {
3274 if (lgfp) {
3275 fclose(lgfp);
3276 lgfp = NULL;
3277 }
3278 }
Local modifications for Simon Tatham's `PuTTY' SSH client and terminal emulator