12 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
13 #define CL_VT100 0x0002 /* VT100 */
14 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
15 #define CL_VT102 0x0008 /* VT102 */
16 #define CL_VT220 0x0010 /* VT220 */
17 #define CL_VT320 0x0020 /* VT320 */
18 #define CL_VT420 0x0040 /* VT420 */
19 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
20 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
21 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
22 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
23 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
25 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
26 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
27 #define TM_VT102 (TM_VT100AVO|CL_VT102)
28 #define TM_VT220 (TM_VT102|CL_VT220)
29 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
30 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
32 #define TM_PUTTY (0xFFFF)
34 #define compatibility(x) \
35 if ( ((CL_##x)&compatibility_level) == 0 ) { \
39 #define compatibility2(x,y) \
40 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
45 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
47 static int compatibility_level = TM_PUTTY;
49 static tree234 *scrollback; /* lines scrolled off top of screen */
50 static tree234 *screen; /* lines on primary screen */
51 static tree234 *alt_screen; /* lines on alternate screen */
52 static int disptop; /* distance scrolled back (0 or -ve) */
54 static unsigned long *cpos; /* cursor position (convenience) */
56 static unsigned long *disptext; /* buffer of text on real screen */
57 static unsigned long *wanttext; /* buffer of text we want on screen */
59 #define VBELL_TIMEOUT 100 /* millisecond len of visual bell */
62 struct beeptime *next;
65 static struct beeptime *beephead, *beeptail;
70 static unsigned char *selspace; /* buffer for building selections in */
72 #define TSIZE (sizeof(unsigned long))
73 #define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
75 static unsigned long curr_attr, save_attr;
76 static unsigned long erase_char = ERASE_CHAR;
81 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
82 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
83 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
84 #define posdiff(p1,p2) ( ((p2).y - (p1).y) * (cols+1) + (p2).x - (p1).x )
85 #define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
86 #define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
88 static pos curs; /* cursor */
89 static pos savecurs; /* saved cursor position */
90 static int marg_t, marg_b; /* scroll margins */
91 static int dec_om; /* DEC origin mode flag */
92 static int wrap, wrapnext; /* wrap flags */
93 static int insert; /* insert-mode flag */
94 static int cset; /* 0 or 1: which char set */
95 static int save_cset, save_csattr; /* saved with cursor position */
96 static int rvideo; /* global reverse video flag */
97 static int rvbell_timeout; /* for ESC[?5hESC[?5l vbell */
98 static int cursor_on; /* cursor enabled flag */
99 static int reset_132; /* Flag ESC c resets to 80 cols */
100 static int use_bce; /* Use Background coloured erase */
101 static int blinker; /* When blinking is the cursor on ? */
102 static int tblinker; /* When the blinking text is on */
103 static int blink_is_real; /* Actually blink blinking text */
104 static int term_echoing; /* Does terminal want local echo? */
105 static int term_editing; /* Does terminal want local edit? */
107 static int xterm_mouse; /* send mouse messages to app */
109 static unsigned long cset_attr[2];
112 * Saved settings on the alternate screen.
114 static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset;
115 static int alt_t, alt_b;
116 static int alt_which;
118 #define ARGS_MAX 32 /* max # of esc sequence arguments */
119 #define ARG_DEFAULT 0 /* if an arg isn't specified */
120 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
121 static int esc_args[ARGS_MAX];
122 static int esc_nargs;
123 static int esc_query;
124 #define ANSI(x,y) ((x)+((y)<<8))
125 #define ANSI_QUE(x) ANSI(x,TRUE)
127 #define OSC_STR_MAX 2048
128 static int osc_strlen;
129 static char osc_string[OSC_STR_MAX+1];
132 static char id_string[1024] = "\033[?6c";
134 static unsigned char *tabs;
148 OSC_STRING, OSC_MAYBE_ST,
156 NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
159 SM_CHAR, SM_WORD, SM_LINE
161 static pos selstart, selend, selanchor;
163 static short wordness[256] = {
164 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 */
165 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 */
166 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 */
167 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 */
168 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 */
169 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 */
170 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 */
171 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 */
174 static unsigned char sel_nl[] = SEL_NL;
175 static char * paste_buffer = 0;
176 static int paste_len, paste_pos, paste_hold;
179 * Internal prototypes.
181 static void do_paint (Context, int);
182 static void erase_lots (int, int, int);
183 static void swap_screen (int);
184 static void update_sbar (void);
185 static void deselect (void);
186 /* log session to file stuff ... */
187 static FILE *lgfp = NULL;
188 static void logtraffic(unsigned char c, int logmode);
191 * Retrieve a line of the screen or of the scrollback, according to
192 * whether the y coordinate is non-negative or negative
195 unsigned long *lineptr(int y, int lineno) {
196 unsigned long *line, lineattrs;
198 int i, treeindex, oldlen;
204 whichtree = scrollback;
205 treeindex = y + count234(scrollback);
207 line = index234(whichtree, treeindex);
209 /* We assume that we don't screw up and retrieve something out of range. */
210 assert(line != NULL);
212 if (line[0] != cols) {
214 * This line is the wrong length, which probably means it
215 * hasn't been accessed since a resize. Resize it now.
218 lineattrs = line[oldlen+1];
219 delpos234(whichtree, treeindex);
220 line = srealloc(line, TSIZE * (2+cols));
222 for (i = oldlen; i < cols; i++)
223 line[i+1] = ERASE_CHAR;
224 line[cols+1] = lineattrs & LATTR_MODE;
225 addpos234(whichtree, line, treeindex);
230 #define lineptr(x) lineptr(x,__LINE__)
232 * Set up power-on settings for the terminal.
234 static void power_on(void) {
235 curs.x = curs.y = alt_x = alt_y = savecurs.x = savecurs.y = 0;
238 alt_b = marg_b = rows - 1;
243 for (i = 0; i < cols; i++)
244 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
246 alt_om = dec_om = cfg.dec_om;
247 alt_wnext = wrapnext = alt_ins = insert = FALSE;
248 alt_wrap = wrap = cfg.wrap_mode;
250 cset_attr[0] = cset_attr[1] = ATTR_ASCII;
254 save_attr = curr_attr = ATTR_DEFAULT;
255 term_editing = term_echoing = FALSE;
256 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
257 app_cursor_keys = cfg.app_cursor;
258 app_keypad_keys = cfg.app_keypad;
260 blink_is_real = cfg.blinktext;
261 erase_char = ERASE_CHAR;
265 for (i = 0; i < 256; i++)
266 wordness[i] = cfg.wordness[i];
270 erase_lots (FALSE, TRUE, TRUE);
272 erase_lots (FALSE, TRUE, TRUE);
277 * Force a screen update.
279 void term_update(void) {
283 if ( (seen_key_event && (cfg.scroll_on_key)) ||
284 (seen_disp_event && (cfg.scroll_on_disp)) ) {
285 disptop = 0; /* return to main screen */
286 seen_disp_event = seen_key_event = 0;
289 do_paint (ctx, TRUE);
290 sys_cursor(curs.x, curs.y - disptop);
296 * Same as power_on(), but an external function.
298 void term_pwron(void) {
307 * Clear the scrollback.
309 void term_clrsb(void) {
312 while ((line = delpos234(scrollback, 0)) != NULL) {
319 * Initialise the terminal.
321 void term_init(void) {
322 screen = alt_screen = scrollback = NULL;
324 disptext = wanttext = NULL;
330 beephead = beeptail = NULL;
333 beep_overloaded = FALSE;
337 * Set up the terminal for a given size.
339 void term_size(int newrows, int newcols, int newsavelines) {
340 tree234 *newsb, *newscreen, *newalt;
341 unsigned long *newdisp, *newwant, *oldline, *line;
344 int save_alt_which = alt_which;
346 if (newrows == rows && newcols == cols && newsavelines == savelines)
347 return; /* nothing to do */
353 alt_b = marg_b = newrows - 1;
356 scrollback = newtree234(NULL);
357 screen = newtree234(NULL);
362 * Resize the screen and scrollback. We only need to shift
363 * lines around within our data structures, because lineptr()
364 * will take care of resizing each individual line if
367 * - If the new screen and the old screen differ in length, we
368 * must shunt some lines in from the scrollback or out to
371 * - If doing that fails to provide us with enough material to
372 * fill the new screen (i.e. the number of rows needed in
373 * the new screen exceeds the total number in the previous
374 * screen+scrollback), we must invent some blank lines to
377 * - Then, if the new scrollback length is less than the
378 * amount of scrollback we actually have, we must throw some
381 sblen = count234(scrollback);
382 /* Do this loop to expand the screen if newrows > rows */
383 for (i = rows; i < newrows; i++) {
385 line = delpos234(scrollback, --sblen);
387 line = smalloc(TSIZE * (newcols+2));
389 for (j = 0; j <= newcols; j++)
390 line[j+1] = ERASE_CHAR;
392 addpos234(screen, line, 0);
394 /* Do this loop to shrink the screen if newrows < rows */
395 for (i = newrows; i < rows; i++) {
396 line = delpos234(screen, 0);
397 addpos234(scrollback, line, sblen++);
399 assert(count234(screen) == newrows);
400 while (sblen > newsavelines) {
401 line = delpos234(scrollback, 0);
405 assert(count234(scrollback) <= newsavelines);
408 newdisp = smalloc (newrows*(newcols+1)*TSIZE);
409 for (i=0; i<newrows*(newcols+1); i++)
410 newdisp[i] = ATTR_INVALID;
414 newwant = smalloc (newrows*(newcols+1)*TSIZE);
415 for (i=0; i<newrows*(newcols+1); i++)
416 newwant[i] = ATTR_INVALID;
420 newalt = newtree234(NULL);
421 for (i=0; i<newrows; i++) {
422 line = smalloc(TSIZE * (newcols+2));
424 for (j = 0; j <= newcols; j++)
425 line[j+1] = erase_char;
426 addpos234(newalt, line, i);
429 while (NULL != (line = delpos234(alt_screen, 0)))
431 freetree234(alt_screen);
436 selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) );
438 tabs = srealloc (tabs, newcols*sizeof(*tabs));
441 for (i = (cols > 0 ? cols : 0); i < newcols; i++)
442 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
446 curs.y += newrows - rows;
449 if (curs.y >= newrows)
451 if (curs.x >= newcols)
454 wrapnext = alt_wnext = FALSE;
458 savelines = newsavelines;
461 swap_screen(save_alt_which);
470 static void swap_screen (int which) {
474 if (which == alt_which)
479 ttr = alt_screen; alt_screen = screen; screen = ttr;
480 t = curs.x; curs.x = alt_x; alt_x = t;
481 t = curs.y; curs.y = alt_y; alt_y = t;
482 t = marg_t; marg_t = alt_t; alt_t = t;
483 t = marg_b; marg_b = alt_b; alt_b = t;
484 t = dec_om; dec_om = alt_om; alt_om = t;
485 t = wrap; wrap = alt_wrap; alt_wrap = t;
486 t = wrapnext; wrapnext = alt_wnext; alt_wnext = t;
487 t = insert; insert = alt_ins; alt_ins = t;
488 t = cset; cset = alt_cset; alt_cset = t;
494 * Update the scroll bar.
496 static void update_sbar(void) {
499 nscroll = count234(scrollback);
501 set_sbar (nscroll + rows, nscroll + disptop, rows);
505 * Check whether the region bounded by the two pointers intersects
506 * the scroll region, and de-select the on-screen selection if so.
508 static void check_selection (pos from, pos to) {
509 if (poslt(from, selend) && poslt(selstart, to))
514 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
515 * for backward.) `sb' is TRUE if the scrolling is permitted to
516 * affect the scrollback buffer.
518 * NB this function invalidates all pointers into lines of the
519 * screen data structures. In particular, you MUST call fix_cpos
520 * after calling scroll() and before doing anything else that
521 * uses the cpos shortcut pointer.
523 static void scroll (int topline, int botline, int lines, int sb) {
524 unsigned long *line, *line2;
527 if (topline != 0 || alt_which != 0)
532 line = delpos234(screen, botline);
533 for (i = 0; i < cols; i++)
534 line[i+1] = erase_char;
536 addpos234(screen, line, topline);
538 if (selstart.y >= topline && selstart.y <= botline) {
540 if (selstart.y > botline) {
541 selstart.y = botline;
545 if (selend.y >= topline && selend.y <= botline) {
547 if (selend.y > botline) {
557 line = delpos234(screen, topline);
558 if (sb && savelines > 0) {
559 int sblen = count234(scrollback);
561 * We must add this line to the scrollback. We'll
562 * remove a line from the top of the scrollback to
563 * replace it, or allocate a new one if the
564 * scrollback isn't full.
566 if (sblen == savelines) {
567 sblen--, line2 = delpos234(scrollback, 0);
569 line2 = smalloc(TSIZE * (cols+2));
572 addpos234(scrollback, line, sblen);
575 for (i = 0; i < cols; i++)
576 line[i+1] = erase_char;
578 addpos234(screen, line, botline);
580 if (selstart.y >= topline && selstart.y <= botline) {
582 if (selstart.y < topline) {
583 selstart.y = topline;
587 if (selend.y >= topline && selend.y <= botline) {
589 if (selend.y < topline) {
601 * Move the cursor to a given position, clipping at boundaries. We
602 * may or may not want to clip at the scroll margin: marg_clip is 0
603 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
604 * even _being_ outside the margins.
606 static void move (int x, int y, int marg_clip) {
612 if ((curs.y >= marg_t || marg_clip == 2) && y < marg_t)
614 if ((curs.y <= marg_b || marg_clip == 2) && y > marg_b)
628 * Save or restore the cursor and SGR mode.
630 static void save_cursor(int save) {
633 save_attr = curr_attr;
635 save_csattr = cset_attr[cset];
638 /* Make sure the window hasn't shrunk since the save */
639 if (curs.x >= cols) curs.x = cols-1;
640 if (curs.y >= rows) curs.y = rows-1;
642 curr_attr = save_attr;
644 cset_attr[cset] = save_csattr;
646 if (use_bce) erase_char = (' ' |(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
651 * Erase a large portion of the screen: the whole screen, or the
652 * whole line, or parts thereof.
654 static void erase_lots (int line_only, int from_begin, int to_end) {
657 unsigned long *ldata;
678 check_selection (start, end);
680 /* Clear screen also forces a full window redraw, just in case. */
681 if (start.y == 0 && start.x == 0 && end.y == rows)
684 ldata = lineptr(start.y);
685 while (poslt(start, end)) {
686 if (start.y == cols && !erase_lattr)
687 ldata[start.x] &= ~ATTR_WRAPPED;
689 ldata[start.x] = erase_char;
690 if (incpos(start) && start.y < rows)
691 ldata = lineptr(start.y);
696 * Insert or delete characters within the current line. n is +ve if
697 * insertion is desired, and -ve for deletion.
699 static void insch (int n) {
700 int dir = (n < 0 ? -1 : +1);
703 unsigned long *ldata;
705 n = (n < 0 ? -n : n);
706 if (n > cols - curs.x)
708 m = cols - curs.x - n;
710 cursplus.x = curs.x + n;
711 check_selection (curs, cursplus);
712 ldata = lineptr(curs.y);
714 memmove (ldata + curs.x, ldata + curs.x + n, m*TSIZE);
716 ldata[curs.x + m++] = erase_char;
718 memmove (ldata + curs.x + n, ldata + curs.x, m*TSIZE);
720 ldata[curs.x + n] = erase_char;
725 * Toggle terminal mode `mode' to state `state'. (`query' indicates
726 * whether the mode is a DEC private one or a normal one.)
728 static void toggle_mode (int mode, int query, int state) {
731 if (query) switch (mode) {
732 case 1: /* application cursor keys */
733 app_cursor_keys = state;
735 case 2: /* VT52 mode */
738 case 3: /* 80/132 columns */
740 request_resize (state ? 132 : 80, rows, 1);
743 case 5: /* reverse video */
745 * Toggle reverse video. If we receive an OFF within the
746 * visual bell timeout period after an ON, we trigger an
747 * effective visual bell, so that ESC[?5hESC[?5l will
748 * always be an actually _visible_ visual bell.
750 ticks = GetTickCount();
751 if (rvideo && !state && /* we're turning it off */
752 ticks < rvbell_timeout) { /* and it's not long since it was turned on */
753 in_vbell = TRUE; /* we may clear rvideo but we set in_vbell */
754 if (vbell_timeout < rvbell_timeout) /* don't move vbell end forward */
755 vbell_timeout = rvbell_timeout; /* vbell end is at least then */
756 } else if (!rvideo && state) {
757 /* This is an ON, so we notice the time and save it. */
758 rvbell_timeout = ticks + VBELL_TIMEOUT;
761 seen_disp_event = TRUE;
762 if (state) term_update();
764 case 6: /* DEC origin mode */
767 case 7: /* auto wrap */
770 case 8: /* auto key repeat */
773 case 10: /* set local edit mode */
774 term_editing = state;
775 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
777 case 25: /* enable/disable cursor */
778 compatibility2(OTHER,VT220);
780 seen_disp_event = TRUE;
782 case 47: /* alternate screen */
783 compatibility(OTHER);
788 case 1000: /* xterm mouse 1 */
789 xterm_mouse = state ? 1 : 0;
790 set_raw_mouse_mode(state);
792 case 1002: /* xterm mouse 2 */
793 xterm_mouse = state ? 2: 0;
794 set_raw_mouse_mode(state);
796 } else switch (mode) {
797 case 4: /* set insert mode */
798 compatibility(VT102);
801 case 12: /* set echo mode */
802 term_echoing = !state;
803 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
805 case 20: /* Return sends ... */
806 cr_lf_return = state;
812 * Process an OSC sequence: set window title or icon name.
814 static void do_osc(void) {
817 wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0];
819 osc_string[osc_strlen] = '\0';
820 switch (esc_args[0]) {
823 set_icon (osc_string);
824 if (esc_args[0] == 1)
826 /* fall through: parameter 0 means set both */
829 set_title (osc_string);
836 * Remove everything currently in `inbuf' and stick it up on the
837 * in-memory display. There's a big state machine in here to
838 * process escape sequences...
840 void term_out(void) {
843 for(inbuf_reap = 0; inbuf_reap < inbuf_head; inbuf_reap++)
845 c = inbuf[inbuf_reap];
848 * Optionally log the session traffic to a file. Useful for
849 * debugging and possibly also useful for actual logging.
851 logtraffic((unsigned char)c, LGTYP_DEBUG);
853 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
854 * be able to display 8-bit characters, but I'll let that go 'cause
857 if( ( (c&0x60) == 0 || c == '\177') &&
858 termstate < DO_CTRLS &&
859 ( (c&0x80) == 0 || has_compat(VT220))) {
861 case '\005': /* terminal type query */
862 /* Strictly speaking this is VT100 but a VT100 defaults to
863 * no response. Other terminals respond at their option.
865 * Don't put a CR in the default string as this tends to
866 * upset some weird software.
868 * An xterm returns "xterm" (5 characters)
870 compatibility(ANSIMIN);
872 char abuf[256], *s, *d;
874 for(s=cfg.answerback, d=abuf; *s; s++) {
877 if (*s >= 'a' && *s <= 'z')
878 *d++ = (*s - ('a'-1));
879 else if ((*s >='@' && *s<='_') ||
880 *s == '?' || (*s&0x80))
886 else if (*s == '^') {
890 *d++ = xlat_kbd2tty((unsigned char)*s);
892 ldisc_send (abuf, d-abuf);
897 struct beeptime *newbeep;
900 ticks = GetTickCount();
902 if (!beep_overloaded) {
903 newbeep = smalloc(sizeof(struct beeptime));
904 newbeep->ticks = ticks;
905 newbeep->next = NULL;
909 beeptail->next = newbeep;
915 * Throw out any beeps that happened more than
919 beephead->ticks < ticks - cfg.bellovl_t) {
920 struct beeptime *tmp = beephead;
921 beephead = tmp->next;
928 if (cfg.bellovl && beep_overloaded &&
929 ticks-lastbeep >= cfg.bellovl_s) {
931 * If we're currently overloaded and the
932 * last beep was more than s seconds ago,
933 * leave overload mode.
935 beep_overloaded = FALSE;
936 } else if (cfg.bellovl && !beep_overloaded &&
937 nbeeps >= cfg.bellovl_n) {
939 * Now, if we have n or more beeps
940 * remaining in the queue, go into overload
943 beep_overloaded = TRUE;
948 * Perform an actual beep if we're not overloaded.
950 if ((!cfg.bellovl || !beep_overloaded) && cfg.beep != 0) {
953 else if(cfg.beep == 2) {
955 vbell_timeout = ticks + VBELL_TIMEOUT;
963 if (curs.x == 0 && curs.y == 0)
965 else if (curs.x == 0 && curs.y > 0)
966 curs.x = cols-1, curs.y--;
972 seen_disp_event = TRUE;
975 compatibility(VT100);
979 compatibility(VT100);
984 termstate = VT52_ESC;
986 compatibility(ANSIMIN);
987 termstate = SEEN_ESC;
991 compatibility(VT220);
992 termstate = SEEN_CSI;
994 esc_args[0] = ARG_DEFAULT;
998 compatibility(VT220);
999 termstate = SEEN_OSC;
1006 seen_disp_event = TRUE;
1008 logtraffic((unsigned char)c,LGTYP_ASCII);
1012 compatibility(VT100);
1014 if (curs.y == marg_b)
1015 scroll (marg_t, marg_b, 1, TRUE);
1016 else if (curs.y < rows-1)
1022 seen_disp_event = 1;
1024 logtraffic((unsigned char)c,LGTYP_ASCII);
1028 pos old_curs = curs;
1029 unsigned long *ldata = lineptr(curs.y);
1033 } while (curs.x < cols-1 && !tabs[curs.x]);
1035 if ((ldata[cols] & LATTR_MODE) != LATTR_NORM)
1037 if (curs.x >= cols/2)
1047 check_selection (old_curs, curs);
1049 seen_disp_event = TRUE;
1051 case '\177': /* Destructive backspace
1052 This does nothing on a real VT100 */
1053 compatibility(OTHER);
1054 if (curs.x && !wrapnext) curs.x--;
1057 *cpos = (' ' | curr_attr | ATTR_ASCII);
1061 else switch (termstate) {
1063 /* Only graphic characters get this far, ctrls are stripped above */
1064 if (wrapnext && wrap) {
1065 cpos[1] |= ATTR_WRAPPED;
1066 if (curs.y == marg_b)
1067 scroll (marg_t, marg_b, 1, TRUE);
1068 else if (curs.y < rows-1)
1076 if (selstate != NO_SELECTION) {
1077 pos cursplus = curs;
1079 check_selection (curs, cursplus);
1081 switch (cset_attr[cset]) {
1083 * Linedraw characters are different from 'ESC ( B'
1084 * only for a small range. For ones outside that
1085 * range, make sure we use the same font as well as
1086 * the same encoding.
1089 if (c<0x5f || c>0x7F)
1090 *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
1093 *cpos++ = ' ' | curr_attr | ATTR_ASCII;
1095 *cpos++ = ((unsigned char)c) | curr_attr | ATTR_LINEDRW;
1098 /* If UK-ASCII, make the '#' a LineDraw Pound */
1100 *cpos++ = '}' | curr_attr | ATTR_LINEDRW;
1105 *cpos = xlat_tty2scr((unsigned char)c) | curr_attr |
1106 (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII);
1107 logtraffic((unsigned char)c, LGTYP_ASCII);
1112 if (curs.x == cols) {
1117 seen_disp_event = 1;
1121 termstate = TOPLEVEL;
1125 * This state is virtually identical to SEEN_ESC, with the
1126 * exception that we have an OSC sequence in the pipeline,
1127 * and _if_ we see a backslash, we process it.
1131 termstate = TOPLEVEL;
1134 /* else fall through */
1136 termstate = TOPLEVEL;
1138 case ' ': /* some weird sequence? */
1139 compatibility(VT220);
1140 termstate = IGNORE_NEXT;
1142 case '[': /* enter CSI mode */
1143 termstate = SEEN_CSI;
1145 esc_args[0] = ARG_DEFAULT;
1148 case ']': /* xterm escape sequences */
1149 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1150 compatibility(OTHER);
1151 termstate = SEEN_OSC;
1154 case '(': /* should set GL */
1155 compatibility(VT100);
1158 case ')': /* should set GR */
1159 compatibility(VT100);
1162 case '7': /* save cursor */
1163 compatibility(VT100);
1166 case '8': /* restore cursor */
1167 compatibility(VT100);
1168 save_cursor (FALSE);
1169 seen_disp_event = TRUE;
1172 compatibility(VT100);
1173 app_keypad_keys = TRUE;
1176 compatibility(VT100);
1177 app_keypad_keys = FALSE;
1179 case 'D': /* exactly equivalent to LF */
1180 compatibility(VT100);
1181 if (curs.y == marg_b)
1182 scroll (marg_t, marg_b, 1, TRUE);
1183 else if (curs.y < rows-1)
1187 seen_disp_event = TRUE;
1189 case 'E': /* exactly equivalent to CR-LF */
1190 compatibility(VT100);
1192 if (curs.y == marg_b)
1193 scroll (marg_t, marg_b, 1, TRUE);
1194 else if (curs.y < rows-1)
1198 seen_disp_event = TRUE;
1200 case 'M': /* reverse index - backwards LF */
1201 compatibility(VT100);
1202 if (curs.y == marg_t)
1203 scroll (marg_t, marg_b, -1, TRUE);
1204 else if (curs.y > 0)
1208 seen_disp_event = TRUE;
1210 case 'Z': /* terminal type query */
1211 compatibility(VT100);
1212 ldisc_send (id_string, strlen(id_string));
1214 case 'c': /* restore power-on settings */
1215 compatibility(VT100);
1218 request_resize (80, rows, 1);
1223 seen_disp_event = TRUE;
1225 case '#': /* ESC # 8 fills screen with Es :-) */
1226 compatibility(VT100);
1227 termstate = SEEN_ESCHASH;
1229 case 'H': /* set a tab */
1230 compatibility(VT100);
1231 tabs[curs.x] = TRUE;
1236 termstate = TOPLEVEL; /* default */
1239 if (esc_nargs <= ARGS_MAX) {
1240 if (esc_args[esc_nargs-1] == ARG_DEFAULT)
1241 esc_args[esc_nargs-1] = 0;
1242 esc_args[esc_nargs-1] =
1243 10 * esc_args[esc_nargs-1] + c - '0';
1245 termstate = SEEN_CSI;
1249 if (++esc_nargs <= ARGS_MAX)
1250 esc_args[esc_nargs-1] = ARG_DEFAULT;
1251 termstate = SEEN_CSI;
1255 if( esc_query ) esc_query = -1;
1256 else if( c == '?' ) esc_query = TRUE;
1258 termstate = SEEN_CSI;
1260 else switch (ANSI(c,esc_query)) {
1261 case 'A': /* move up N lines */
1262 move (curs.x, curs.y - def(esc_args[0], 1), 1);
1263 seen_disp_event = TRUE;
1265 case 'e': /* move down N lines */
1266 compatibility(ANSI);
1268 move (curs.x, curs.y + def(esc_args[0], 1), 1);
1269 seen_disp_event = TRUE;
1271 case 'a': /* move right N cols */
1272 compatibility(ANSI);
1273 case ANSI('c', '>'): /* report xterm version */
1274 compatibility(OTHER);
1275 /* this reports xterm version 136 so that VIM can
1276 use the drag messages from the mouse reporting */
1277 ldisc_send("\033[>0;136;0c", 11);
1280 move (curs.x + def(esc_args[0], 1), curs.y, 1);
1281 seen_disp_event = TRUE;
1283 case 'D': /* move left N cols */
1284 move (curs.x - def(esc_args[0], 1), curs.y, 1);
1285 seen_disp_event = TRUE;
1287 case 'E': /* move down N lines and CR */
1288 compatibility(ANSI);
1289 move (0, curs.y + def(esc_args[0], 1), 1);
1290 seen_disp_event = TRUE;
1292 case 'F': /* move up N lines and CR */
1293 compatibility(ANSI);
1294 move (0, curs.y - def(esc_args[0], 1), 1);
1295 seen_disp_event = TRUE;
1297 case 'G': case '`': /* set horizontal posn */
1298 compatibility(ANSI);
1299 move (def(esc_args[0], 1) - 1, curs.y, 0);
1300 seen_disp_event = TRUE;
1302 case 'd': /* set vertical posn */
1303 compatibility(ANSI);
1304 move (curs.x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1306 seen_disp_event = TRUE;
1308 case 'H': case 'f': /* set horz and vert posns at once */
1310 esc_args[1] = ARG_DEFAULT;
1311 move (def(esc_args[1], 1) - 1,
1312 (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1314 seen_disp_event = TRUE;
1316 case 'J': /* erase screen or parts of it */
1318 unsigned int i = def(esc_args[0], 0) + 1;
1321 erase_lots(FALSE, !!(i & 2), !!(i & 1));
1324 seen_disp_event = TRUE;
1326 case 'K': /* erase line or parts of it */
1328 unsigned int i = def(esc_args[0], 0) + 1;
1331 erase_lots(TRUE, !!(i & 2), !!(i & 1));
1333 seen_disp_event = TRUE;
1335 case 'L': /* insert lines */
1336 compatibility(VT102);
1337 if (curs.y <= marg_b)
1338 scroll (curs.y, marg_b, -def(esc_args[0], 1), FALSE);
1340 seen_disp_event = TRUE;
1342 case 'M': /* delete lines */
1343 compatibility(VT102);
1344 if (curs.y <= marg_b)
1345 scroll (curs.y, marg_b, def(esc_args[0], 1), TRUE);
1347 seen_disp_event = TRUE;
1349 case '@': /* insert chars */
1350 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1351 compatibility(VT102);
1352 insch (def(esc_args[0], 1));
1353 seen_disp_event = TRUE;
1355 case 'P': /* delete chars */
1356 compatibility(VT102);
1357 insch (-def(esc_args[0], 1));
1358 seen_disp_event = TRUE;
1360 case 'c': /* terminal type query */
1361 compatibility(VT100);
1362 /* This is the response for a VT102 */
1363 ldisc_send (id_string, strlen(id_string));
1365 case 'n': /* cursor position query */
1366 if (esc_args[0] == 6) {
1368 sprintf (buf, "\033[%d;%dR", curs.y + 1, curs.x + 1);
1369 ldisc_send (buf, strlen(buf));
1371 else if (esc_args[0] == 5) {
1372 ldisc_send ("\033[0n", 4);
1375 case 'h': /* toggle modes to high */
1377 compatibility(VT100);
1380 for (i=0; i<esc_nargs; i++)
1381 toggle_mode (esc_args[i], esc_query, TRUE);
1384 case 'l': /* toggle modes to low */
1386 compatibility(VT100);
1389 for (i=0; i<esc_nargs; i++)
1390 toggle_mode (esc_args[i], esc_query, FALSE);
1393 case 'g': /* clear tabs */
1394 compatibility(VT100);
1395 if (esc_nargs == 1) {
1396 if (esc_args[0] == 0) {
1397 tabs[curs.x] = FALSE;
1398 } else if (esc_args[0] == 3) {
1400 for (i = 0; i < cols; i++)
1405 case 'r': /* set scroll margins */
1406 compatibility(VT100);
1407 if (esc_nargs <= 2) {
1409 top = def(esc_args[0], 1) - 1;
1410 bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows :
1411 def(esc_args[1], rows)) - 1;
1414 /* VTTEST Bug 9 - if region is less than 2 lines
1415 * don't change region.
1422 * I used to think the cursor should be
1423 * placed at the top of the newly marginned
1424 * area. Apparently not: VMS TPU falls over
1427 * Well actually it should for Origin mode - RDB
1429 curs.y = (dec_om ? marg_t : 0);
1431 seen_disp_event = TRUE;
1435 case 'm': /* set graphics rendition */
1438 * A VT100 without the AVO only had one attribute, either
1439 * underline or reverse video depending on the cursor type,
1440 * this was selected by CSI 7m.
1443 * This is DIM on the VT100-AVO and VT102
1445 * This is BLINK on the VT100-AVO and VT102+
1447 * This is INVIS on the VT100-AVO and VT102
1449 * This like 22 disables BOLD, DIM and INVIS
1451 * The ANSI colours appear on any terminal that has colour
1452 * (obviously) but the interaction between sgr0 and the
1453 * colours varies but is usually related to the background
1454 * colour erase item.
1455 * The interaction between colour attributes and the mono
1456 * ones is also very implementation dependent.
1458 * The 39 and 49 attributes are likely to be unimplemented.
1461 for (i=0; i<esc_nargs; i++) {
1462 switch (def(esc_args[i], 0)) {
1463 case 0: /* restore defaults */
1464 curr_attr = ATTR_DEFAULT; break;
1465 case 1: /* enable bold */
1466 compatibility(VT100AVO);
1467 curr_attr |= ATTR_BOLD; break;
1468 case 21: /* (enable double underline) */
1469 compatibility(OTHER);
1470 case 4: /* enable underline */
1471 compatibility(VT100AVO);
1472 curr_attr |= ATTR_UNDER; break;
1473 case 5: /* enable blink */
1474 compatibility(VT100AVO);
1475 curr_attr |= ATTR_BLINK; break;
1476 case 7: /* enable reverse video */
1477 curr_attr |= ATTR_REVERSE; break;
1478 case 22: /* disable bold */
1479 compatibility2(OTHER,VT220);
1480 curr_attr &= ~ATTR_BOLD; break;
1481 case 24: /* disable underline */
1482 compatibility2(OTHER,VT220);
1483 curr_attr &= ~ATTR_UNDER; break;
1484 case 25: /* disable blink */
1485 compatibility2(OTHER,VT220);
1486 curr_attr &= ~ATTR_BLINK; break;
1487 case 27: /* disable reverse video */
1488 compatibility2(OTHER,VT220);
1489 curr_attr &= ~ATTR_REVERSE; break;
1490 case 30: case 31: case 32: case 33:
1491 case 34: case 35: case 36: case 37:
1493 curr_attr &= ~ATTR_FGMASK;
1494 curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT;
1496 case 39: /* default-foreground */
1497 curr_attr &= ~ATTR_FGMASK;
1498 curr_attr |= ATTR_DEFFG;
1500 case 40: case 41: case 42: case 43:
1501 case 44: case 45: case 46: case 47:
1503 curr_attr &= ~ATTR_BGMASK;
1504 curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT;
1506 case 49: /* default-background */
1507 curr_attr &= ~ATTR_BGMASK;
1508 curr_attr |= ATTR_DEFBG;
1515 (curr_attr&(ATTR_FGMASK|ATTR_BGMASK|ATTR_BLINK))
1519 case 's': /* save cursor */
1522 case 'u': /* restore cursor */
1523 save_cursor (FALSE);
1524 seen_disp_event = TRUE;
1526 case 't': /* set page size - ie window height */
1528 * VT340/VT420 sequence DECSLPP, DEC only allows values
1529 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1530 * illegal values (eg first arg 1..9) for window changing
1533 compatibility(VT340TEXT);
1534 if (esc_nargs<=1 && (esc_args[0]<1 || esc_args[0]>=24)) {
1535 request_resize (cols, def(esc_args[0], 24), 0);
1539 case ANSI('|', '*'):
1540 /* VT420 sequence DECSNLS
1541 * Set number of lines on screen
1542 * VT420 uses VGA like hardware and can support any size in
1543 * reasonable range (24..49 AIUI) with no default specified.
1545 compatibility(VT420);
1546 if (esc_nargs==1 && esc_args[0]>0) {
1547 request_resize (cols, def(esc_args[0], cfg.height), 0);
1551 case ANSI('|', '$'):
1552 /* VT340/VT420 sequence DECSCPP
1553 * Set number of columns per page
1554 * Docs imply range is only 80 or 132, but I'll allow any.
1556 compatibility(VT340TEXT);
1558 request_resize (def(esc_args[0], cfg.width), rows, 0);
1562 case 'X': /* write N spaces w/o moving cursor */
1563 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1564 compatibility(ANSIMIN);
1566 int n = def(esc_args[0], 1);
1568 unsigned long *p = cpos;
1569 if (n > cols - curs.x)
1573 check_selection (curs, cursplus);
1576 seen_disp_event = TRUE;
1579 case 'x': /* report terminal characteristics */
1580 compatibility(VT100);
1583 int i = def(esc_args[0], 0);
1584 if (i == 0 || i == 1) {
1585 strcpy (buf, "\033[2;1;1;112;112;1;0x");
1587 ldisc_send (buf, 20);
1592 compatibility(OTHER);
1593 use_bce = (esc_args[0]<=0);
1594 erase_char = ERASE_CHAR;
1596 erase_char = (' '|(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
1599 compatibility(OTHER);
1600 blink_is_real = (esc_args[0]>=1);
1603 /* Allow the host to make this emulator a 'perfect' VT102.
1604 * This first appeared in the VT220, but we do need to get
1605 * back to PuTTY mode so I won't check it.
1607 * The arg in 40..42 are a PuTTY extension.
1608 * The 2nd arg, 8bit vs 7bit is not checked.
1610 * Setting VT102 mode should also change the Fkeys to
1611 * generate PF* codes as a real VT102 has no Fkeys.
1612 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1615 * Note ESC c will NOT change this!
1618 switch (esc_args[0]) {
1619 case 61: compatibility_level &= ~TM_VTXXX;
1620 compatibility_level |= TM_VT102; break;
1621 case 62: compatibility_level &= ~TM_VTXXX;
1622 compatibility_level |= TM_VT220; break;
1624 default: if( esc_args[0] > 60 && esc_args[0] < 70 )
1625 compatibility_level |= TM_VTXXX;
1628 case 40: compatibility_level &= TM_VTXXX; break;
1629 case 41: compatibility_level = TM_PUTTY; break;
1630 case 42: compatibility_level = TM_SCOANSI; break;
1633 compatibility_level = TM_PUTTY; break;
1637 /* Change the response to CSI c */
1638 if (esc_args[0] == 50) {
1641 strcpy(id_string, "\033[?");
1642 for (i=1; i<esc_nargs; i++) {
1643 if (i!=1) strcat(id_string, ";");
1644 sprintf(lbuf, "%d", esc_args[i]);
1645 strcat(id_string, lbuf);
1647 strcat(id_string, "c");
1651 /* Is this a good idea ?
1652 * Well we should do a soft reset at this point ...
1654 if (!has_compat(VT420) && has_compat(VT100)) {
1655 if (reset_132) request_resize (132, 24, 1);
1656 else request_resize ( 80, 24, 1);
1664 /* VT100 only here, checked above */
1667 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR;
1670 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW;
1673 default: /* specifically, 'B' */
1674 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII;
1677 if( !has_compat(VT220) || c != '%' )
1678 termstate = TOPLEVEL;
1683 case 'P': /* Linux palette sequence */
1684 termstate = SEEN_OSC_P;
1687 case 'R': /* Linux palette reset */
1690 termstate = TOPLEVEL;
1692 case 'W': /* word-set */
1693 termstate = SEEN_OSC_W;
1696 case '0': case '1': case '2': case '3': case '4':
1697 case '5': case '6': case '7': case '8': case '9':
1698 esc_args[0] = 10 * esc_args[0] + c - '0';
1702 * Grotty hack to support xterm and DECterm title
1703 * sequences concurrently.
1705 if (esc_args[0] == 2) {
1709 /* else fall through */
1711 termstate = OSC_STRING;
1717 * This OSC stuff is EVIL. It takes just one character to get into
1718 * sysline mode and it's not initially obvious how to get out.
1719 * So I've added CR and LF as string aborts.
1720 * This shouldn't effect compatibility as I believe embedded
1721 * control characters are supposed to be interpreted (maybe?)
1722 * and they don't display anything useful anyway.
1726 if (c == '\n' || c == '\r') {
1727 termstate = TOPLEVEL;
1728 } else if (c == 0234 || c == '\007' ) {
1730 * These characters terminate the string; ST and BEL
1731 * terminate the sequence and trigger instant
1732 * processing of it, whereas ESC goes back to SEEN_ESC
1733 * mode unless it is followed by \, in which case it is
1734 * synonymous with ST in the first place.
1737 termstate = TOPLEVEL;
1738 } else if (c == '\033')
1739 termstate = OSC_MAYBE_ST;
1740 else if (osc_strlen < OSC_STR_MAX)
1741 osc_string[osc_strlen++] = c;
1745 int max = (osc_strlen == 0 ? 21 : 16);
1747 if (c >= '0' && c <= '9')
1749 else if (c >= 'A' && c <= 'A'+max-10)
1751 else if (c >= 'a' && c <= 'a'+max-10)
1754 termstate = TOPLEVEL;
1755 osc_string[osc_strlen++] = val;
1756 if (osc_strlen >= 7) {
1757 palette_set (osc_string[0],
1758 osc_string[1] * 16 + osc_string[2],
1759 osc_string[3] * 16 + osc_string[4],
1760 osc_string[5] * 16 + osc_string[6]);
1762 termstate = TOPLEVEL;
1768 case '0': case '1': case '2': case '3': case '4':
1769 case '5': case '6': case '7': case '8': case '9':
1770 esc_args[0] = 10 * esc_args[0] + c - '0';
1773 termstate = OSC_STRING;
1779 unsigned long nlattr;
1780 unsigned long *ldata;
1786 for (i = 0; i < rows; i++) {
1788 for (j = 0; j < cols; j++)
1789 ldata[j] = ATTR_DEFAULT | 'E';
1793 seen_disp_event = TRUE;
1794 scrtop.x = scrtop.y = 0;
1795 scrbot.x = 0; scrbot.y = rows;
1796 check_selection (scrtop, scrbot);
1799 case '3': nlattr = LATTR_TOP; goto lattr_common;
1800 case '4': nlattr = LATTR_BOT; goto lattr_common;
1801 case '5': nlattr = LATTR_NORM; goto lattr_common;
1802 case '6': nlattr = LATTR_WIDE;
1805 ldata = lineptr(curs.y);
1806 ldata[cols] &= ~LATTR_MODE;
1807 ldata[cols] |= nlattr;
1810 termstate = TOPLEVEL;
1813 termstate = TOPLEVEL;
1814 seen_disp_event = TRUE;
1817 move (curs.x, curs.y - 1, 1);
1820 move (curs.x, curs.y + 1, 1);
1823 move (curs.x + 1, curs.y, 1);
1826 move (curs.x - 1, curs.y, 1);
1829 cset_attr[cset=0] = ATTR_LINEDRW;
1832 cset_attr[cset=0] = ATTR_ASCII;
1839 scroll (0, rows-1, -1, TRUE);
1840 else if (curs.y > 0)
1846 erase_lots(FALSE, FALSE, TRUE);
1850 erase_lots(TRUE, FALSE, TRUE);
1853 /* XXX Print cursor line */
1856 /* XXX Start controller mode */
1859 /* XXX Stop controller mode */
1862 termstate = VT52_Y1;
1865 ldisc_send ("\033/Z", 3);
1868 app_keypad_keys = TRUE;
1871 app_keypad_keys = FALSE;
1874 /* XXX This should switch to VT100 mode not current or default
1875 * VT mode. But this will only have effect in a VT220+
1881 /* XXX Enter auto print mode */
1884 /* XXX Exit auto print mode */
1887 /* XXX Print screen */
1892 termstate = VT52_Y2;
1893 move(curs.x, c-' ', 0);
1896 termstate = TOPLEVEL;
1897 move(c-' ', curs.y, 0);
1900 if (selstate != NO_SELECTION) {
1901 pos cursplus = curs;
1903 check_selection (curs, cursplus);
1910 * Compare two lines to determine whether they are sufficiently
1911 * alike to scroll-optimise one to the other. Return the degree of
1914 static int linecmp (unsigned long *a, unsigned long *b) {
1917 for (i=n=0; i < cols; i++)
1918 n += (*a++ == *b++);
1923 * Given a context, update the window. Out of paranoia, we don't
1924 * allow WM_PAINT responses to do scrolling optimisations.
1926 static void do_paint (Context ctx, int may_optimise) {
1927 int i, j, start, our_curs_y;
1928 unsigned long attr, rv, cursor;
1934 * Check the visual bell state.
1937 ticks = GetTickCount();
1938 if (ticks - vbell_timeout >= 0)
1943 * screen array, disptop, scrtop,
1945 * cfg.blinkpc, blink_is_real, tblinker,
1946 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus
1950 if (blinker || !cfg.blink_cur)
1951 cursor = ATTR_ACTCURS;
1956 cursor = ATTR_PASCURS;
1958 cursor |= ATTR_RIGHTCURS;
1962 rv = (!rvideo ^ !in_vbell ? ATTR_REVERSE : 0);
1963 our_curs_y = curs.y - disptop;
1965 for (i=0; i<rows; i++) {
1966 unsigned long *ldata;
1968 scrpos.y = i + disptop;
1969 ldata = lineptr(scrpos.y);
1970 lattr = (ldata[cols] & LATTR_MODE);
1971 for (j=0; j<=cols; j++) {
1972 unsigned long d = ldata[j];
1973 int idx = i*(cols+1)+j;
1976 wanttext[idx] = lattr | (((d &~ ATTR_WRAPPED) ^ rv
1977 ^ (posle(selstart, scrpos) &&
1978 poslt(scrpos, selend) ?
1979 ATTR_REVERSE : 0)) |
1980 (i==our_curs_y && j==curs.x ? cursor : 0));
1981 if (blink_is_real) {
1982 if (has_focus && tblinker && (wanttext[idx]&ATTR_BLINK) )
1984 wanttext[idx] &= ATTR_MASK;
1985 wanttext[idx] += ' ';
1987 wanttext[idx] &= ~ATTR_BLINK;
1993 * We would perform scrolling optimisations in here, if they
1994 * didn't have a nasty tendency to cause the whole sodding
1995 * program to hang for a second at speed-critical moments.
1996 * We'll leave it well alone...
1999 for (i=0; i<rows; i++) {
2000 int idx = i*(cols+1);
2001 int lattr = (wanttext[idx+cols] & LATTR_MODE);
2003 for (j=0; j<=cols; j++,idx++) {
2004 unsigned long t = wanttext[idx];
2005 int needs_update = (j < cols && t != disptext[idx]);
2006 int keep_going = (start != -1 && needs_update &&
2007 (t & ATTR_MASK) == attr &&
2008 j-start < sizeof(ch));
2009 if (start != -1 && !keep_going) {
2010 do_text (ctx, start, i, ch, j-start, attr, lattr);
2016 attr = t & ATTR_MASK;
2018 ch[j-start] = (char) (t & CHAR_MASK);
2026 * Flick the switch that says if blinking things should be shown or hidden.
2029 void term_blink(int flg) {
2030 static long last_blink = 0;
2031 static long last_tblink = 0;
2032 long now, blink_diff;
2034 now = GetTickCount();
2035 blink_diff = now-last_tblink;
2037 /* Make sure the text blinks no more than 2Hz */
2038 if (blink_diff<0 || blink_diff>450)
2041 tblinker = !tblinker;
2050 blink_diff = now-last_blink;
2052 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
2053 if (blink_diff>=0 && blink_diff<(long)GetCaretBlinkTime())
2061 * Invalidate the whole screen so it will be repainted in full.
2063 void term_invalidate(void) {
2066 for (i=0; i<rows*(cols+1); i++)
2067 disptext[i] = ATTR_INVALID;
2071 * Paint the window in response to a WM_PAINT message.
2073 void term_paint (Context ctx, int l, int t, int r, int b) {
2074 int i, j, left, top, right, bottom;
2076 left = l / font_width;
2077 right = (r - 1) / font_width;
2078 top = t / font_height;
2079 bottom = (b - 1) / font_height;
2080 for (i = top; i <= bottom && i < rows ; i++)
2082 if ( (disptext[i*(cols+1)+cols]&LATTR_MODE) == LATTR_NORM)
2083 for (j = left; j <= right && j < cols ; j++)
2084 disptext[i*(cols+1)+j] = ATTR_INVALID;
2086 for (j = left/2; j <= right/2+1 && j < cols ; j++)
2087 disptext[i*(cols+1)+j] = ATTR_INVALID;
2090 /* This should happen soon enough, also for some reason it sometimes
2091 * fails to actually do anything when re-sizing ... painting the wrong
2093 do_paint (ctx, FALSE);
2098 * Attempt to scroll the scrollback. The second parameter gives the
2099 * position we want to scroll to; the first is +1 to denote that
2100 * this position is relative to the beginning of the scrollback, -1
2101 * to denote it is relative to the end, and 0 to denote that it is
2102 * relative to the current position.
2104 void term_scroll (int rel, int where) {
2105 int sbtop = -count234(scrollback);
2107 disptop = (rel < 0 ? 0 :
2108 rel > 0 ? sbtop : disptop) + where;
2109 if (disptop < sbtop)
2117 static void clipme(pos top, pos bottom, char *workbuf) {
2118 char *wbptr; /* where next char goes within workbuf */
2119 int wblen = 0; /* workbuf len */
2120 int buflen; /* amount of memory allocated to workbuf */
2122 if ( workbuf != NULL ) { /* user supplied buffer? */
2123 buflen = -1; /* assume buffer passed in is big enough */
2124 wbptr = workbuf; /* start filling here */
2127 buflen = 0; /* No data is available yet */
2129 while (poslt(top, bottom)) {
2131 unsigned long *ldata = lineptr(top.y);
2137 if (!(ldata[cols] & ATTR_WRAPPED)) {
2138 while ((ldata[nlpos.x-1] & CHAR_MASK) == 0x20 && poslt(top, nlpos))
2140 if (poslt(nlpos, bottom))
2143 while (poslt(top, bottom) && poslt(top, nlpos)) {
2144 int ch = (ldata[top.x] & CHAR_MASK);
2145 int set = (ldata[top.x] & CSET_MASK);
2147 /* VT Specials -> ISO8859-1 for Cut&Paste */
2148 static const unsigned char poorman2[] =
2149 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
2151 if (set && !cfg.rawcnp) {
2152 if (set == ATTR_LINEDRW && ch >= 0x60 && ch < 0x7F) {
2154 if ((x = poorman2[2*(ch-0x60)+1]) == ' ')
2156 ch = (x<<8) + poorman2[2*(ch-0x60)];
2161 if (cfg.rawcnp || !!(ch&0xE0)) {
2162 if ( wblen == buflen )
2164 workbuf = srealloc(workbuf, buflen += 100);
2165 wbptr = workbuf + wblen;
2168 *wbptr++ = (unsigned char) ch;
2176 for (i=0; i<sizeof(sel_nl); i++)
2178 if ( wblen == buflen )
2180 workbuf = srealloc(workbuf, buflen += 100);
2181 wbptr = workbuf + wblen;
2184 *wbptr++ = sel_nl[i];
2190 write_clip (workbuf, wblen, FALSE); /* transfer to clipboard */
2191 if ( buflen > 0 ) /* indicates we allocated this buffer */
2195 void term_copyall (void) {
2197 top.y = -count234(scrollback);
2199 clipme(top, curs, NULL /* dynamic allocation */);
2203 * Spread the selection outwards according to the selection mode.
2205 static pos sel_spread_half (pos p, int dir) {
2206 unsigned long *ldata;
2209 ldata = lineptr(p.y);
2214 * In this mode, every character is a separate unit, except
2215 * for runs of spaces at the end of a non-wrapping line.
2217 if (!(ldata[cols] & ATTR_WRAPPED)) {
2218 unsigned long *q = ldata+cols;
2219 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
2221 if (q == ldata+cols)
2224 p.x = (dir == -1 ? q-ldata : cols - 1);
2229 * In this mode, the units are maximal runs of characters
2230 * whose `wordness' has the same value.
2232 wvalue = wordness[ldata[p.x] & CHAR_MASK];
2234 while (p.x < cols && wordness[ldata[p.x+1] & CHAR_MASK] == wvalue)
2237 while (p.x > 0 && wordness[ldata[p.x-1] & CHAR_MASK] == wvalue)
2243 * In this mode, every line is a unit.
2245 p.x = (dir == -1 ? 0 : cols - 1);
2251 static void sel_spread (void) {
2252 selstart = sel_spread_half (selstart, -1);
2254 selend = sel_spread_half (selend, +1);
2258 void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y,
2259 int shift, int ctrl) {
2261 unsigned long *ldata;
2264 if (y>=rows) y = rows-1;
2272 if (x>=cols) x = cols-1;
2274 selpoint.y = y + disptop;
2276 ldata = lineptr(selpoint.y);
2277 if ((ldata[cols]&LATTR_MODE) != LATTR_NORM)
2281 int encstate = 0, r, c;
2283 static int is_down = 0;
2287 encstate = 0x20; /* left button down */
2298 case MBT_WHEEL_DOWN:
2304 if (xterm_mouse == 1)
2325 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
2326 ldisc_send(abuf, 6);
2330 b = translate_button(b);
2332 if (b == MBT_SELECT && a == MA_CLICK) {
2334 selstate = ABOUT_TO;
2335 selanchor = selpoint;
2337 } else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
2339 selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
2340 selstate = DRAGGING;
2341 selstart = selanchor = selpoint;
2345 } else if ((b == MBT_SELECT && a == MA_DRAG) ||
2346 (b == MBT_EXTEND && a != MA_RELEASE)) {
2347 if (selstate == ABOUT_TO && poseq(selanchor, selpoint))
2349 if (b == MBT_EXTEND && a != MA_DRAG && selstate == SELECTED) {
2350 if (posdiff(selpoint,selstart) < posdiff(selend,selstart)/2) {
2354 selanchor = selstart;
2356 selstate = DRAGGING;
2358 if (selstate != ABOUT_TO && selstate != DRAGGING)
2359 selanchor = selpoint;
2360 selstate = DRAGGING;
2361 if (poslt(selpoint, selanchor)) {
2362 selstart = selpoint;
2366 selstart = selanchor;
2371 } else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
2372 if (selstate == DRAGGING) {
2374 * We've completed a selection. We now transfer the
2375 * data to the clipboard.
2377 clipme(selstart, selend, selspace);
2378 selstate = SELECTED;
2380 selstate = NO_SELECTION;
2381 } else if (b == MBT_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) {
2385 get_clip((void **) &data, &len);
2389 if (paste_buffer) sfree(paste_buffer);
2390 paste_pos = paste_hold = paste_len = 0;
2391 paste_buffer = smalloc(len);
2394 while (p < data+len) {
2395 while (p < data+len &&
2396 !(p <= data+len-sizeof(sel_nl) &&
2397 !memcmp(p, sel_nl, sizeof(sel_nl))))
2405 c=xlat_kbd2tty(q[i]);
2406 paste_buffer[paste_len++] = c;
2410 if (p <= data+len-sizeof(sel_nl) &&
2411 !memcmp(p, sel_nl, sizeof(sel_nl))) {
2412 paste_buffer[paste_len++] = '\r';
2413 p += sizeof(sel_nl);
2418 /* Assume a small paste will be OK in one go. */
2419 if (paste_len<256) {
2420 ldisc_send (paste_buffer, paste_len);
2421 if (paste_buffer) sfree(paste_buffer);
2423 paste_pos = paste_hold = paste_len = 0;
2426 get_clip(NULL, NULL);
2432 void term_nopaste() {
2433 if(paste_len == 0) return;
2434 sfree(paste_buffer);
2440 static long last_paste = 0;
2441 long now, paste_diff;
2443 if(paste_len == 0) return;
2445 /* Don't wait forever to paste */
2447 now = GetTickCount();
2448 paste_diff = now-last_paste;
2449 if (paste_diff>=0 && paste_diff<450)
2454 while(paste_pos<paste_len)
2457 while (n + paste_pos < paste_len) {
2458 if (paste_buffer[paste_pos + n++] == '\r')
2461 ldisc_send (paste_buffer+paste_pos, n);
2464 if (paste_pos < paste_len) {
2469 sfree(paste_buffer);
2474 static void deselect (void) {
2475 selstate = NO_SELECTION;
2476 selstart.x = selstart.y = selend.x = selend.y = 0;
2479 void term_deselect (void) {
2484 int term_ldisc(int option) {
2485 if (option == LD_ECHO) return term_echoing;
2486 if (option == LD_EDIT) return term_editing;
2491 * from_backend(), to get data from the backend for the terminal.
2493 void from_backend(int is_stderr, char *data, int len) {
2495 if (inbuf_head >= INBUF_SIZE)
2497 inbuf[inbuf_head++] = *data++;
2502 * Log session traffic.
2504 void logtraffic(unsigned char c, int logmode) {
2505 if (cfg.logtype > 0) {
2506 if (cfg.logtype == logmode) {
2507 /* deferred open file from pgm start? */
2508 if (!lgfp) logfopen();
2509 if (lgfp) fputc (c, lgfp);
2514 /* open log file append/overwrite mode */
2515 void logfopen(void) {
2523 sprintf (writemod, "wb"); /* default to rewrite */
2524 lgfp = fopen(cfg.logfilename, "r"); /* file already present? */
2528 i = askappend(cfg.logfilename);
2530 writemod[0] = 'a'; /* set append mode */
2531 else if (i == 0) { /* cancelled */
2533 cfg.logtype = 0; /* disable logging */
2538 lgfp = fopen(cfg.logfilename, writemod);
2539 if (lgfp) { /* enter into event log */
2540 sprintf(buf, "%s session log (%s mode) to file : ",
2541 (writemod[0] == 'a') ? "Appending" : "Writing new",
2542 (cfg.logtype == LGTYP_ASCII ? "ASCII" :
2543 cfg.logtype == LGTYP_DEBUG ? "raw" : "<ukwn>") );
2544 /* Make sure we do not exceed the output buffer size */
2545 strncat (buf, cfg.logfilename, 128);
2546 buf[strlen(buf)] = '\0';
2549 /* --- write header line iinto log file */
2550 fputs ("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp);
2553 strftime(buf, 24, "%Y.%m.%d %H:%M:%S", tm);
2555 fputs (" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp);
2559 void logfclose (void) {
2560 if (lgfp) { fclose(lgfp); lgfp = NULL; }