9 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
10 #define CL_VT100 0x0002 /* VT100 */
11 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
12 #define CL_VT102 0x0008 /* VT102 */
13 #define CL_VT220 0x0010 /* VT220 */
14 #define CL_VT320 0x0020 /* VT320 */
15 #define CL_VT420 0x0040 /* VT420 */
16 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
17 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
18 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
19 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
20 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
22 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
23 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
24 #define TM_VT102 (TM_VT100AVO|CL_VT102)
25 #define TM_VT220 (TM_VT102|CL_VT220)
26 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
27 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
29 #define TM_PUTTY (0xFFFF)
31 #define compatibility(x) \
32 if ( ((CL_##x)&compatibility_level) == 0 ) { \
36 #define compatibility2(x,y) \
37 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
42 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
44 static int compatibility_level = TM_PUTTY;
47 static unsigned long *text; /* buffer of text on terminal screen */
48 static unsigned long *scrtop; /* top of working screen */
49 static unsigned long *disptop; /* top of displayed screen */
50 static unsigned long *sbtop; /* top of scrollback */
51 static unsigned long *sbbot; /* furthest extent of scrollback */
52 static unsigned long *cpos; /* cursor position (convenience) */
53 static unsigned long *disptext; /* buffer of text on real screen */
54 static unsigned long *wanttext; /* buffer of text we want on screen */
55 static unsigned long *alttext; /* buffer of text on alt. screen */
57 static unsigned char *selspace; /* buffer for building selections in */
59 #define TSIZE (sizeof(*text))
60 #define fix_cpos do { cpos = scrtop + curs_y * (cols+1) + curs_x; } while(0)
62 static unsigned long curr_attr, save_attr;
63 static unsigned long erase_char = ERASE_CHAR;
65 static int curs_x, curs_y; /* cursor */
66 static int save_x, save_y; /* saved cursor position */
67 static int marg_t, marg_b; /* scroll margins */
68 static int dec_om; /* DEC origin mode flag */
69 static int wrap, wrapnext; /* wrap flags */
70 static int insert; /* insert-mode flag */
71 static int cset; /* 0 or 1: which char set */
72 static int save_cset, save_csattr; /* saved with cursor position */
73 static int rvideo; /* global reverse video flag */
74 static int cursor_on; /* cursor enabled flag */
75 static int reset_132; /* Flag ESC c resets to 80 cols */
76 static int use_bce; /* Use Background coloured erase */
77 static int blinker; /* When blinking is the cursor on ? */
78 static int tblinker; /* When the blinking text is on */
79 static int blink_is_real; /* Actually blink blinking text */
81 static unsigned long cset_attr[2];
84 * Saved settings on the alternate screen.
86 static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset;
87 static int alt_t, alt_b;
90 #define ARGS_MAX 32 /* max # of esc sequence arguments */
91 #define ARG_DEFAULT 0 /* if an arg isn't specified */
92 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
93 static int esc_args[ARGS_MAX];
96 #define ANSI(x,y) ((x)+((y)<<8))
97 #define ANSI_QUE(x) ANSI(x,TRUE)
99 #define OSC_STR_MAX 2048
100 static int osc_strlen;
101 static char osc_string[OSC_STR_MAX+1];
104 static char id_string[1024] = "\033[?6c";
106 static unsigned char *tabs;
120 OSC_STRING, OSC_MAYBE_ST,
128 NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
131 SM_CHAR, SM_WORD, SM_LINE
133 static unsigned long *selstart, *selend, *selanchor;
135 static short wordness[256] = {
136 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 01 */
137 0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2, 2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1, /* 23 */
138 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2, /* 45 */
139 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */
140 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 89 */
141 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* AB */
142 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* CD */
143 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* EF */
146 static unsigned char sel_nl[] = SEL_NL;
147 static char * paste_buffer = 0;
148 static int paste_len, paste_pos, paste_hold;
151 * Internal prototypes.
153 static void do_paint (Context, int);
154 static void erase_lots (int, int, int);
155 static void swap_screen (int);
156 static void update_sbar (void);
157 static void deselect (void);
160 * Set up power-on settings for the terminal.
162 static void power_on(void) {
163 curs_x = curs_y = alt_x = alt_y = save_x = save_y = 0;
166 alt_b = marg_b = rows - 1;
171 for (i = 0; i < cols; i++)
172 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
174 alt_om = dec_om = cfg.dec_om;
175 alt_wnext = wrapnext = alt_ins = insert = FALSE;
176 alt_wrap = wrap = cfg.wrap_mode;
178 cset_attr[0] = cset_attr[1] = ATTR_ASCII;
181 save_attr = curr_attr = ATTR_DEFAULT;
182 app_cursor_keys = cfg.app_cursor;
183 app_keypad_keys = cfg.app_keypad;
185 blink_is_real = cfg.blinktext;
186 erase_char = ERASE_CHAR;
190 for (i = 0; i < 256; i++)
191 wordness[i] = cfg.wordness[i];
195 erase_lots (FALSE, TRUE, TRUE);
197 erase_lots (FALSE, TRUE, TRUE);
202 * Force a screen update.
204 void term_update(void) {
208 if ( (seen_key_event && (cfg.scroll_on_key)) ||
209 (seen_disp_event && (cfg.scroll_on_disp)) ) {
211 seen_disp_event = seen_key_event = 0;
214 do_paint (ctx, TRUE);
215 sys_cursor(curs_x, curs_y + (scrtop - disptop) / (cols+1));
221 * Same as power_on(), but an external function.
223 void term_pwron(void) {
232 * Clear the scrollback.
234 void term_clrsb(void) {
235 disptop = sbtop = scrtop;
240 * Initialise the terminal.
242 void term_init(void) {
243 text = sbtop = sbbot = scrtop = disptop = cpos = NULL;
244 disptext = wanttext = NULL;
253 * Set up the terminal for a given size.
255 void term_size(int newrows, int newcols, int newsavelines) {
256 unsigned long *newtext, *newdisp, *newwant, *newalt;
257 int i, j, crows, ccols;
259 int save_alt_which = alt_which;
261 if (newrows == rows && newcols == cols && newsavelines == savelines)
262 return; /* nothing to do */
268 alt_b = marg_b = newrows - 1;
270 newtext = smalloc ((newrows+newsavelines)*(newcols+1)*TSIZE);
271 sbbot = newtext + newsavelines*(newcols+1);
272 for (i=0; i<(newrows+newsavelines)*(newcols+1); i++)
273 newtext[i] = erase_char;
275 crows = rows + (scrtop - sbtop) / (cols+1);
276 if (crows > newrows+newsavelines)
277 crows = newrows+newsavelines;
281 disptop = newtext + (crows-newrows)*(newcols+1);
282 ccols = (cols < newcols ? cols : newcols);
283 for (i=0; i<crows; i++) {
284 int oldidx = (rows - crows + i) * (cols+1);
285 int newidx = (newrows - crows + i) * (newcols+1);
287 for (j=0; j<ccols; j++)
288 disptop[newidx+j] = scrtop[oldidx+j];
289 disptop[newidx+newcols] =
290 (cols == newcols ? scrtop[oldidx+cols]
291 : (scrtop[oldidx+cols]&LATTR_MODE));
295 sbtop = disptop = newtext;
301 newdisp = smalloc (newrows*(newcols+1)*TSIZE);
302 for (i=0; i<newrows*(newcols+1); i++)
303 newdisp[i] = ATTR_INVALID;
307 newwant = smalloc (newrows*(newcols+1)*TSIZE);
308 for (i=0; i<newrows*(newcols+1); i++)
309 newwant[i] = ATTR_INVALID;
313 newalt = smalloc (newrows*(newcols+1)*TSIZE);
314 for (i=0; i<newrows*(newcols+1); i++)
315 newalt[i] = erase_char;
320 selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) );
322 tabs = srealloc (tabs, newcols*sizeof(*tabs));
325 for (i = (cols > 0 ? cols : 0); i < newcols; i++)
326 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
330 curs_y += newrows - rows;
333 if (curs_y >= newrows)
335 if (curs_x >= newcols)
338 wrapnext = alt_wnext = FALSE;
342 savelines = newsavelines;
345 swap_screen(save_alt_which);
354 static void swap_screen (int which) {
358 if (which == alt_which)
363 for (t=0; t<rows*(cols+1); t++) {
364 tt = scrtop[t]; scrtop[t] = alttext[t]; alttext[t] = tt;
367 t = curs_x; curs_x = alt_x; alt_x = t;
368 t = curs_y; curs_y = alt_y; alt_y = t;
369 t = marg_t; marg_t = alt_t; alt_t = t;
370 t = marg_b; marg_b = alt_b; alt_b = t;
371 t = dec_om; dec_om = alt_om; alt_om = t;
372 t = wrap; wrap = alt_wrap; alt_wrap = t;
373 t = wrapnext; wrapnext = alt_wnext; alt_wnext = t;
374 t = insert; insert = alt_ins; alt_ins = t;
375 t = cset; cset = alt_cset; alt_cset = t;
381 * Update the scroll bar.
383 static void update_sbar(void) {
386 min = (sbtop - text) / (cols+1);
387 set_sbar ((scrtop - text) / (cols+1) + rows - min,
388 (disptop - text) / (cols+1) - min,
393 * Check whether the region bounded by the two pointers intersects
394 * the scroll region, and de-select the on-screen selection if so.
396 static void check_selection (unsigned long *from, unsigned long *to) {
397 if (from < selend && selstart < to)
402 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
403 * for backward.) `sb' is TRUE if the scrolling is permitted to
404 * affect the scrollback buffer.
406 static void scroll (int topline, int botline, int lines, int sb) {
407 unsigned long *scroll_top;
408 unsigned long *newscr;
409 int scroll_size, size, i;
410 int scrtop_is_disptop = (scrtop==disptop);
411 static int recursive = 0;
413 /* Only scroll more than the window if we're doing a 10% scroll */
414 if (!recursive && lines > botline - topline + 1)
415 lines = botline - topline + 1;
417 scroll_top = scrtop + topline*(cols+1);
418 size = (lines < 0 ? -lines : lines) * (cols+1);
419 scroll_size = (botline - topline + 1) * (cols+1) - size;
421 if (lines > 0 && topline == 0 && alt_which == 0 && sb) {
423 * Since we're going to scroll the top line and we're on the
424 * scrolling screen let's also effect the scrollback buffer.
426 * This is normally done by moving the position the screen
427 * painter reads from to reduce the amount of memory copying
430 if (scroll_size >= 0 && !recursive) {
431 newscr = scrtop + lines * (cols+1);
433 if (newscr > sbbot && botline == rows-1) {
434 /* We've hit the bottom of memory, so we have to do a
435 * physical scroll. But instead of just 1 line do it
436 * by 10% of the available memory.
438 * If the scroll region isn't the whole screen then we can't
439 * do this as it stands. We would need to recover the bottom
440 * of the screen from the scroll buffer after being sure that
441 * it doesn't get deleted.
444 i = (rows+savelines)/10;
446 /* Make it simple and ensure safe recursion */
447 if ( i<savelines-1) {
449 scroll(topline, botline, i, sb);
452 newscr = scrtop - i * (cols+1);
453 if (scrtop_is_disptop) disptop = newscr;
457 newscr = scrtop + lines * (cols+1);
460 if (newscr <= sbbot) {
461 if (scrtop_is_disptop) disptop = newscr;
464 if (botline == rows-1 )
465 for (i = 0; i < size; i++)
466 scrtop[i+scroll_size] = erase_char;
471 if (botline != rows-1) {
472 /* This fastscroll only works for full window scrolls.
473 * If the caller wanted a partial one we have to reverse
474 * scroll the bottom of the screen.
476 scroll(botline-lines+1, rows-1, -lines, 0);
481 /* If we can't scroll by memory remapping do it physically.
482 * But rather than expensivly doing the scroll buffer just
483 * scroll the screen. All it means is that sometimes we choose
484 * to not add lines from a scroll region to the scroll buffer.
487 if (savelines <= 400) {
488 sbtop -= lines * (cols+1);
491 scroll_size += scroll_top - sbtop;
497 /* Ho hum, expensive scroll required. */
499 sbtop -= lines * (cols+1);
502 scroll_size += scroll_top - sbtop;
509 if (scroll_size < 0) {
516 memmove (scroll_top, scroll_top + size, scroll_size*TSIZE);
517 for (i = 0; i < size; i++)
518 scroll_top[i+scroll_size] = erase_char;
519 if (selstart > scroll_top &&
520 selstart < scroll_top + size + scroll_size) {
522 if (selstart < scroll_top)
523 selstart = scroll_top;
525 if (selend > scroll_top &&
526 selend < scroll_top + size + scroll_size) {
528 if (selend < scroll_top)
531 if (scrtop_is_disptop)
534 if (disptop > scroll_top &&
535 disptop < scroll_top + size + scroll_size) {
537 if (disptop < scroll_top)
538 disptop = scroll_top;
542 memmove (scroll_top + size, scroll_top, scroll_size*TSIZE);
543 for (i = 0; i < size; i++)
544 scroll_top[i] = erase_char;
545 if (selstart > scroll_top &&
546 selstart < scroll_top + size + scroll_size) {
548 if (selstart > scroll_top + size + scroll_size)
549 selstart = scroll_top + size + scroll_size;
551 if (selend > scroll_top &&
552 selend < scroll_top + size + scroll_size) {
554 if (selend > scroll_top + size + scroll_size)
555 selend = scroll_top + size + scroll_size;
557 if (scrtop_is_disptop)
559 else if (disptop > scroll_top &&
560 disptop < scroll_top + size + scroll_size) {
562 if (disptop > scroll_top + size + scroll_size)
563 disptop = scroll_top + size + scroll_size;
569 * Move the cursor to a given position, clipping at boundaries. We
570 * may or may not want to clip at the scroll margin: marg_clip is 0
571 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
572 * even _being_ outside the margins.
574 static void move (int x, int y, int marg_clip) {
580 if ((curs_y >= marg_t || marg_clip == 2) && y < marg_t)
582 if ((curs_y <= marg_b || marg_clip == 2) && y > marg_b)
596 * Save or restore the cursor and SGR mode.
598 static void save_cursor(int save) {
602 save_attr = curr_attr;
604 save_csattr = cset_attr[cset];
608 /* Make sure the window hasn't shrunk since the save */
609 if (curs_x >= cols) curs_x = cols-1;
610 if (curs_y >= rows) curs_y = rows-1;
612 curr_attr = save_attr;
614 cset_attr[cset] = save_csattr;
616 if (use_bce) erase_char = (' ' |(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
621 * Erase a large portion of the screen: the whole screen, or the
622 * whole line, or parts thereof.
624 static void erase_lots (int line_only, int from_begin, int to_end) {
625 unsigned long *startpos, *endpos;
628 startpos = cpos - curs_x;
629 endpos = startpos + cols;
630 /* I've removed the +1 so that the Wide screen stuff is not
631 * removed when it shouldn't be.
635 endpos = startpos + rows * (cols+1);
641 check_selection (startpos, endpos);
643 /* Clear screen also forces a full window redraw, just in case. */
644 if (startpos == scrtop && endpos == scrtop + rows * (cols+1))
647 while (startpos < endpos)
648 *startpos++ = erase_char;
652 * Insert or delete characters within the current line. n is +ve if
653 * insertion is desired, and -ve for deletion.
655 static void insch (int n) {
656 int dir = (n < 0 ? -1 : +1);
659 n = (n < 0 ? -n : n);
660 if (n > cols - curs_x)
662 m = cols - curs_x - n;
663 check_selection (cpos, cpos+n);
665 memmove (cpos, cpos+n, m*TSIZE);
667 cpos[m++] = erase_char;
669 memmove (cpos+n, cpos, m*TSIZE);
671 cpos[n] = erase_char;
676 * Toggle terminal mode `mode' to state `state'. (`query' indicates
677 * whether the mode is a DEC private one or a normal one.)
679 static void toggle_mode (int mode, int query, int state) {
680 if (query) switch (mode) {
681 case 1: /* application cursor keys */
682 app_cursor_keys = state;
684 case 2: /* VT52 mode */
687 case 3: /* 80/132 columns */
689 request_resize (state ? 132 : 80, rows, 1);
692 case 5: /* reverse video */
694 seen_disp_event = TRUE;
695 if (state) term_update();
697 case 6: /* DEC origin mode */
700 case 7: /* auto wrap */
703 case 8: /* auto key repeat */
706 case 25: /* enable/disable cursor */
707 compatibility2(OTHER,VT220);
709 seen_disp_event = TRUE;
711 case 47: /* alternate screen */
712 compatibility(OTHER);
717 } else switch (mode) {
718 case 4: /* set insert mode */
719 compatibility(VT102);
722 case 12: /* set echo mode */
724 * This may be very good in smcup and rmcup (or smkx & rmkx) if you
725 * have a long RTT and the telnet client/daemon doesn't understand
728 * DONT send TS_RECHO/TS_LECHO; the telnet daemon tries to fix the
729 * tty and _really_ confuses some programs.
731 compatibility2(OTHER,VT220);
732 ldisc = (state? &ldisc_simple : &ldisc_term);
734 case 20: /* Return sends ... */
735 cr_lf_return = state;
741 * Process an OSC sequence: set window title or icon name.
743 static void do_osc(void) {
746 wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0];
748 osc_string[osc_strlen] = '\0';
749 switch (esc_args[0]) {
752 set_icon (osc_string);
753 if (esc_args[0] == 1)
755 /* fall through: parameter 0 means set both */
758 set_title (osc_string);
765 * Remove everything currently in `inbuf' and stick it up on the
766 * in-memory display. There's a big state machine in here to
767 * process escape sequences...
769 void term_out(void) {
772 static int beep_overload = 0;
775 for(inbuf_reap = 0; inbuf_reap < inbuf_head; inbuf_reap++)
777 c = inbuf[inbuf_reap];
780 * Optionally log the session traffic to a file. Useful for
781 * debugging and possibly also useful for actual logging.
784 static FILE *fp = NULL;
785 if (!fp) fp = fopen(logfile, "wb");
786 if (fp) fputc (c, fp);
788 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
789 * be able to display 8-bit characters, but I'll let that go 'cause
792 if( ( (c&0x60) == 0 || c == '\177') &&
793 termstate < DO_CTRLS &&
794 ( (c&0x80) == 0 || has_compat(VT220))) {
796 case '\005': /* terminal type query */
797 /* Strictly speaking this is VT100 but a VT100 defaults to
798 * no response. Other terminals respond at their option.
800 * Don't put a CR in the default string as this tends to
801 * upset some weird software.
803 * An xterm returns "xterm" (5 characters)
805 compatibility(OTHER);
806 ldisc->send ("PuTTY", 5);
810 if(beep_count>6) beep_overload=1;
814 if (curs_x == 0 && curs_y == 0)
816 else if (curs_x == 0 && curs_y > 0)
817 curs_x = cols-1, curs_y--;
823 seen_disp_event = TRUE;
826 compatibility(VT100);
830 compatibility(VT100);
835 termstate = VT52_ESC;
837 compatibility(ANSIMIN);
838 termstate = SEEN_ESC;
842 compatibility(VT220);
843 termstate = SEEN_CSI;
845 esc_args[0] = ARG_DEFAULT;
849 compatibility(VT220);
850 termstate = SEEN_OSC;
857 seen_disp_event = TRUE;
862 compatibility(VT100);
864 if (curs_y == marg_b)
865 scroll (marg_t, marg_b, 1, TRUE);
866 else if (curs_y < rows-1)
877 unsigned long *old_cpos = cpos;
878 unsigned long *p = scrtop + curs_y * (cols+1) + cols;
882 } while (curs_x < cols-1 && !tabs[curs_x]);
884 if ((*p & LATTR_MODE) != LATTR_NORM)
886 if (curs_x >= cols/2)
896 check_selection (old_cpos, cpos);
898 seen_disp_event = TRUE;
900 case '\177': /* Destructive backspace
901 This does nothing on a real VT100 */
902 compatibility(OTHER);
903 if (curs_x && !wrapnext) curs_x--;
906 *cpos = (' ' | curr_attr | ATTR_ASCII);
910 else switch (termstate) {
912 /* Only graphic characters get this far, ctrls are stripped above */
914 cpos[1] |= ATTR_WRAPPED;
915 if (curs_y == marg_b)
916 scroll (marg_t, marg_b, 1, TRUE);
917 else if (curs_y < rows-1)
925 if (selstate != NO_SELECTION)
926 check_selection (cpos, cpos+1);
927 switch (cset_attr[cset]) {
928 /* Linedraw characters are different from 'ESC ( B' only
929 * for a small range, for ones outside that range make sure
930 * we use the same font as well as the same encoding.
933 if (c<0x5f || c>0x7F)
934 *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
937 *cpos++ = ' ' | curr_attr | ATTR_ASCII;
939 *cpos++ = ((unsigned char)c) | curr_attr | ATTR_LINEDRW;
942 /* If UK-ASCII, make the '#' a LineDraw Pound */
944 *cpos++ = '}' | curr_attr | ATTR_LINEDRW;
949 *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
950 (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII);
954 if (curs_x == cols) {
963 termstate = TOPLEVEL;
967 * This state is virtually identical to SEEN_ESC, with the
968 * exception that we have an OSC sequence in the pipeline,
969 * and _if_ we see a backslash, we process it.
973 termstate = TOPLEVEL;
976 /* else fall through */
978 termstate = TOPLEVEL;
980 case ' ': /* some weird sequence? */
981 compatibility(VT220);
982 termstate = IGNORE_NEXT;
984 case '[': /* enter CSI mode */
985 termstate = SEEN_CSI;
987 esc_args[0] = ARG_DEFAULT;
990 case ']': /* xterm escape sequences */
991 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
992 compatibility(OTHER);
993 termstate = SEEN_OSC;
996 case '(': /* should set GL */
997 compatibility(VT100);
1000 case ')': /* should set GR */
1001 compatibility(VT100);
1004 case '7': /* save cursor */
1005 compatibility(VT100);
1008 case '8': /* restore cursor */
1009 compatibility(VT100);
1010 save_cursor (FALSE);
1011 seen_disp_event = TRUE;
1014 compatibility(VT100);
1015 app_keypad_keys = TRUE;
1018 compatibility(VT100);
1019 app_keypad_keys = FALSE;
1021 case 'D': /* exactly equivalent to LF */
1022 compatibility(VT100);
1023 if (curs_y == marg_b)
1024 scroll (marg_t, marg_b, 1, TRUE);
1025 else if (curs_y < rows-1)
1029 seen_disp_event = TRUE;
1031 case 'E': /* exactly equivalent to CR-LF */
1032 compatibility(VT100);
1034 if (curs_y == marg_b)
1035 scroll (marg_t, marg_b, 1, TRUE);
1036 else if (curs_y < rows-1)
1040 seen_disp_event = TRUE;
1042 case 'M': /* reverse index - backwards LF */
1043 compatibility(VT100);
1044 if (curs_y == marg_t)
1045 scroll (marg_t, marg_b, -1, TRUE);
1046 else if (curs_y > 0)
1050 seen_disp_event = TRUE;
1052 case 'Z': /* terminal type query */
1053 compatibility(VT100);
1054 ldisc->send (id_string, strlen(id_string));
1056 case 'c': /* restore power-on settings */
1057 compatibility(VT100);
1060 request_resize (80, rows, 1);
1065 seen_disp_event = TRUE;
1067 case '#': /* ESC # 8 fills screen with Es :-) */
1068 compatibility(VT100);
1069 termstate = SEEN_ESCHASH;
1071 case 'H': /* set a tab */
1072 compatibility(VT100);
1073 tabs[curs_x] = TRUE;
1078 termstate = TOPLEVEL; /* default */
1081 if (esc_nargs <= ARGS_MAX) {
1082 if (esc_args[esc_nargs-1] == ARG_DEFAULT)
1083 esc_args[esc_nargs-1] = 0;
1084 esc_args[esc_nargs-1] =
1085 10 * esc_args[esc_nargs-1] + c - '0';
1087 termstate = SEEN_CSI;
1091 if (++esc_nargs <= ARGS_MAX)
1092 esc_args[esc_nargs-1] = ARG_DEFAULT;
1093 termstate = SEEN_CSI;
1097 if( esc_query ) esc_query = -1;
1098 else if( c == '?' ) esc_query = TRUE;
1100 termstate = SEEN_CSI;
1102 else switch (ANSI(c,esc_query)) {
1103 case 'A': /* move up N lines */
1104 move (curs_x, curs_y - def(esc_args[0], 1), 1);
1105 seen_disp_event = TRUE;
1107 case 'e': /* move down N lines */
1108 compatibility(ANSI);
1110 move (curs_x, curs_y + def(esc_args[0], 1), 1);
1111 seen_disp_event = TRUE;
1113 case 'a': /* move right N cols */
1114 compatibility(ANSI);
1116 move (curs_x + def(esc_args[0], 1), curs_y, 1);
1117 seen_disp_event = TRUE;
1119 case 'D': /* move left N cols */
1120 move (curs_x - def(esc_args[0], 1), curs_y, 1);
1121 seen_disp_event = TRUE;
1123 case 'E': /* move down N lines and CR */
1124 compatibility(ANSI);
1125 move (0, curs_y + def(esc_args[0], 1), 1);
1126 seen_disp_event = TRUE;
1128 case 'F': /* move up N lines and CR */
1129 compatibility(ANSI);
1130 move (0, curs_y - def(esc_args[0], 1), 1);
1131 seen_disp_event = TRUE;
1133 case 'G': case '`': /* set horizontal posn */
1134 compatibility(ANSI);
1135 move (def(esc_args[0], 1) - 1, curs_y, 0);
1136 seen_disp_event = TRUE;
1138 case 'd': /* set vertical posn */
1139 compatibility(ANSI);
1140 move (curs_x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1142 seen_disp_event = TRUE;
1144 case 'H': case 'f': /* set horz and vert posns at once */
1146 esc_args[1] = ARG_DEFAULT;
1147 move (def(esc_args[1], 1) - 1,
1148 (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1150 seen_disp_event = TRUE;
1152 case 'J': /* erase screen or parts of it */
1154 unsigned int i = def(esc_args[0], 0) + 1;
1157 erase_lots(FALSE, !!(i & 2), !!(i & 1));
1160 seen_disp_event = TRUE;
1162 case 'K': /* erase line or parts of it */
1164 unsigned int i = def(esc_args[0], 0) + 1;
1167 erase_lots(TRUE, !!(i & 2), !!(i & 1));
1169 seen_disp_event = TRUE;
1171 case 'L': /* insert lines */
1172 compatibility(VT102);
1173 if (curs_y <= marg_b)
1174 scroll (curs_y, marg_b, -def(esc_args[0], 1), FALSE);
1175 seen_disp_event = TRUE;
1177 case 'M': /* delete lines */
1178 compatibility(VT102);
1179 if (curs_y <= marg_b)
1180 scroll (curs_y, marg_b, def(esc_args[0], 1), TRUE);
1181 seen_disp_event = TRUE;
1183 case '@': /* insert chars */
1184 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1185 compatibility(VT102);
1186 insch (def(esc_args[0], 1));
1187 seen_disp_event = TRUE;
1189 case 'P': /* delete chars */
1190 compatibility(VT102);
1191 insch (-def(esc_args[0], 1));
1192 seen_disp_event = TRUE;
1194 case 'c': /* terminal type query */
1195 compatibility(VT100);
1196 /* This is the response for a VT102 */
1197 ldisc->send (id_string, strlen(id_string));
1199 case 'n': /* cursor position query */
1200 if (esc_args[0] == 6) {
1202 sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1);
1203 ldisc->send (buf, strlen(buf));
1205 else if (esc_args[0] == 5) {
1206 ldisc->send ("\033[0n", 4);
1209 case 'h': /* toggle modes to high */
1211 compatibility(VT100);
1214 for (i=0; i<esc_nargs; i++)
1215 toggle_mode (esc_args[i], esc_query, TRUE);
1218 case 'l': /* toggle modes to low */
1220 compatibility(VT100);
1223 for (i=0; i<esc_nargs; i++)
1224 toggle_mode (esc_args[i], esc_query, FALSE);
1227 case 'g': /* clear tabs */
1228 compatibility(VT100);
1229 if (esc_nargs == 1) {
1230 if (esc_args[0] == 0) {
1231 tabs[curs_x] = FALSE;
1232 } else if (esc_args[0] == 3) {
1234 for (i = 0; i < cols; i++)
1239 case 'r': /* set scroll margins */
1240 compatibility(VT100);
1241 if (esc_nargs <= 2) {
1243 top = def(esc_args[0], 1) - 1;
1244 bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows :
1245 def(esc_args[1], rows)) - 1;
1248 /* VTTEST Bug 9 - if region is less than 2 lines
1249 * don't change region.
1256 * I used to think the cursor should be
1257 * placed at the top of the newly marginned
1258 * area. Apparently not: VMS TPU falls over
1261 * Well actually it should for Origin mode - RDB
1263 curs_y = (dec_om ? marg_t : 0);
1265 seen_disp_event = TRUE;
1269 case 'm': /* set graphics rendition */
1272 * A VT100 without the AVO only had one attribute, either
1273 * underline or reverse video depending on the cursor type,
1274 * this was selected by CSI 7m.
1277 * This is DIM on the VT100-AVO and VT102
1279 * This is BLINK on the VT100-AVO and VT102+
1281 * This is INVIS on the VT100-AVO and VT102
1283 * This like 22 disables BOLD, DIM and INVIS
1285 * The ANSI colours appear on any terminal that has colour
1286 * (obviously) but the interaction between sgr0 and the
1287 * colours varies but is usually related to the background
1288 * colour erase item.
1289 * The interaction between colour attributes and the mono
1290 * ones is also very implementation dependent.
1292 * The 39 and 49 attributes are likely to be unimplemented.
1295 for (i=0; i<esc_nargs; i++) {
1296 switch (def(esc_args[i], 0)) {
1297 case 0: /* restore defaults */
1298 curr_attr = ATTR_DEFAULT; break;
1299 case 1: /* enable bold */
1300 compatibility(VT100AVO);
1301 curr_attr |= ATTR_BOLD; break;
1302 case 21: /* (enable double underline) */
1303 compatibility(OTHER);
1304 case 4: /* enable underline */
1305 compatibility(VT100AVO);
1306 curr_attr |= ATTR_UNDER; break;
1307 case 5: /* enable blink */
1308 compatibility(VT100AVO);
1309 curr_attr |= ATTR_BLINK; break;
1310 case 7: /* enable reverse video */
1311 curr_attr |= ATTR_REVERSE; break;
1312 case 22: /* disable bold */
1313 compatibility2(OTHER,VT220);
1314 curr_attr &= ~ATTR_BOLD; break;
1315 case 24: /* disable underline */
1316 compatibility2(OTHER,VT220);
1317 curr_attr &= ~ATTR_UNDER; break;
1318 case 25: /* disable blink */
1319 compatibility2(OTHER,VT220);
1320 curr_attr &= ~ATTR_BLINK; break;
1321 case 27: /* disable reverse video */
1322 compatibility2(OTHER,VT220);
1323 curr_attr &= ~ATTR_REVERSE; break;
1324 case 30: case 31: case 32: case 33:
1325 case 34: case 35: case 36: case 37:
1327 curr_attr &= ~ATTR_FGMASK;
1328 curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT;
1330 case 39: /* default-foreground */
1331 curr_attr &= ~ATTR_FGMASK;
1332 curr_attr |= ATTR_DEFFG;
1334 case 40: case 41: case 42: case 43:
1335 case 44: case 45: case 46: case 47:
1337 curr_attr &= ~ATTR_BGMASK;
1338 curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT;
1340 case 49: /* default-background */
1341 curr_attr &= ~ATTR_BGMASK;
1342 curr_attr |= ATTR_DEFBG;
1349 (curr_attr&(ATTR_FGMASK|ATTR_BGMASK|ATTR_BLINK))
1353 case 's': /* save cursor */
1356 case 'u': /* restore cursor */
1357 save_cursor (FALSE);
1358 seen_disp_event = TRUE;
1360 case 't': /* set page size - ie window height */
1362 * VT340/VT420 sequence DECSLPP, DEC only allows values
1363 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1364 * illegal values (eg first arg 1..9) for window changing
1367 compatibility(VT340TEXT);
1368 if (esc_nargs<=1 && (esc_args[0]<1 || esc_args[0]>=24)) {
1369 request_resize (cols, def(esc_args[0], 24), 0);
1373 case ANSI('|', '*'):
1374 /* VT420 sequence DECSNLS
1375 * Set number of lines on screen
1376 * VT420 uses VGA like hardware and can support any size in
1377 * reasonable range (24..49 AIUI) with no default specified.
1379 compatibility(VT420);
1380 if (esc_nargs==1 && esc_args[0]>0) {
1381 request_resize (cols, def(esc_args[0], cfg.height), 0);
1385 case ANSI('|', '$'):
1386 /* VT340/VT420 sequence DECSCPP
1387 * Set number of columns per page
1388 * Docs imply range is only 80 or 132, but I'll allow any.
1390 compatibility(VT340TEXT);
1392 request_resize (def(esc_args[0], cfg.width), rows, 0);
1396 case 'X': /* write N spaces w/o moving cursor */
1397 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1398 compatibility(ANSIMIN);
1400 int n = def(esc_args[0], 1);
1401 unsigned long *p = cpos;
1402 if (n > cols - curs_x)
1404 check_selection (cpos, cpos+n);
1407 seen_disp_event = TRUE;
1410 case 'x': /* report terminal characteristics */
1411 compatibility(VT100);
1414 int i = def(esc_args[0], 0);
1415 if (i == 0 || i == 1) {
1416 strcpy (buf, "\033[2;1;1;112;112;1;0x");
1418 ldisc->send (buf, 20);
1423 compatibility(OTHER);
1424 use_bce = (esc_args[0]<=0);
1425 erase_char = ERASE_CHAR;
1427 erase_char = (' '|(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
1430 compatibility(OTHER);
1431 blink_is_real = (esc_args[0]>=1);
1434 /* Allow the host to make this emulator a 'perfect' VT102.
1435 * This first appeared in the VT220, but we do need to get
1436 * back to PuTTY mode so I won't check it.
1438 * The arg in 40..42 are a PuTTY extension.
1439 * The 2nd arg, 8bit vs 7bit is not checked.
1441 * Setting VT102 mode should also change the Fkeys to
1442 * generate PF* codes as a real VT102 has no Fkeys.
1443 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1446 * Note ESC c will NOT change this!
1449 switch (esc_args[0]) {
1450 case 61: compatibility_level &= ~TM_VTXXX;
1451 compatibility_level |= TM_VT102; break;
1452 case 62: compatibility_level &= ~TM_VTXXX;
1453 compatibility_level |= TM_VT220; break;
1455 default: if( esc_args[0] > 60 && esc_args[0] < 70 )
1456 compatibility_level |= TM_VTXXX;
1459 case 40: compatibility_level &= TM_VTXXX; break;
1460 case 41: compatibility_level = TM_PUTTY; break;
1461 case 42: compatibility_level = TM_SCOANSI; break;
1464 compatibility_level = TM_PUTTY; break;
1468 /* Change the response to CSI c */
1469 if (esc_args[0] == 50) {
1472 strcpy(id_string, "\033[?");
1473 for (i=1; i<esc_nargs; i++) {
1474 if (i!=1) strcat(id_string, ";");
1475 sprintf(lbuf, "%d", esc_args[i]);
1476 strcat(id_string, lbuf);
1478 strcat(id_string, "c");
1482 /* Is this a good idea ?
1483 * Well we should do a soft reset at this point ...
1485 if (!has_compat(VT420) && has_compat(VT100)) {
1486 if (reset_132) request_resize (132, 24, 1);
1487 else request_resize ( 80, 24, 1);
1495 /* VT100 only here, checked above */
1498 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR;
1501 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW;
1504 default: /* specifically, 'B' */
1505 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII;
1508 if( !has_compat(VT220) || c != '%' )
1509 termstate = TOPLEVEL;
1514 case 'P': /* Linux palette sequence */
1515 termstate = SEEN_OSC_P;
1518 case 'R': /* Linux palette reset */
1521 termstate = TOPLEVEL;
1523 case 'W': /* word-set */
1524 termstate = SEEN_OSC_W;
1527 case '0': case '1': case '2': case '3': case '4':
1528 case '5': case '6': case '7': case '8': case '9':
1529 esc_args[0] = 10 * esc_args[0] + c - '0';
1533 * Grotty hack to support xterm and DECterm title
1534 * sequences concurrently.
1536 if (esc_args[0] == 2) {
1540 /* else fall through */
1542 termstate = OSC_STRING;
1548 * This OSC stuff is EVIL. It takes just one character to get into
1549 * sysline mode and it's not initially obvious how to get out.
1550 * So I've added CR and LF as string aborts.
1551 * This shouldn't effect compatibility as I believe embedded
1552 * control characters are supposed to be interpreted (maybe?)
1553 * and they don't display anything useful anyway.
1557 if (c == '\n' || c == '\r') {
1558 termstate = TOPLEVEL;
1559 } else if (c == 0234 || c == '\007' ) {
1561 * These characters terminate the string; ST and BEL
1562 * terminate the sequence and trigger instant
1563 * processing of it, whereas ESC goes back to SEEN_ESC
1564 * mode unless it is followed by \, in which case it is
1565 * synonymous with ST in the first place.
1568 termstate = TOPLEVEL;
1569 } else if (c == '\033')
1570 termstate = OSC_MAYBE_ST;
1571 else if (osc_strlen < OSC_STR_MAX)
1572 osc_string[osc_strlen++] = c;
1576 int max = (osc_strlen == 0 ? 21 : 16);
1578 if (c >= '0' && c <= '9')
1580 else if (c >= 'A' && c <= 'A'+max-10)
1582 else if (c >= 'a' && c <= 'a'+max-10)
1585 termstate = TOPLEVEL;
1586 osc_string[osc_strlen++] = val;
1587 if (osc_strlen >= 7) {
1588 palette_set (osc_string[0],
1589 osc_string[1] * 16 + osc_string[2],
1590 osc_string[3] * 16 + osc_string[4],
1591 osc_string[5] * 16 + osc_string[6]);
1593 termstate = TOPLEVEL;
1599 case '0': case '1': case '2': case '3': case '4':
1600 case '5': case '6': case '7': case '8': case '9':
1601 esc_args[0] = 10 * esc_args[0] + c - '0';
1604 termstate = OSC_STRING;
1611 unsigned long nlattr;
1617 n = rows * (cols+1);
1619 *p++ = ATTR_DEFAULT | 'E';
1621 seen_disp_event = TRUE;
1622 check_selection (scrtop, scrtop + rows * (cols+1));
1625 case '3': nlattr = LATTR_TOP; if(0) {
1626 case '4': nlattr = LATTR_BOT; } if(0) {
1627 case '5': nlattr = LATTR_NORM; } if(0) {
1628 case '6': nlattr = LATTR_WIDE; }
1630 p = scrtop + curs_y * (cols+1) + cols;
1635 termstate = TOPLEVEL;
1638 termstate = TOPLEVEL;
1639 seen_disp_event = TRUE;
1642 move (curs_x, curs_y - 1, 1);
1645 move (curs_x, curs_y + 1, 1);
1648 move (curs_x + 1, curs_y, 1);
1651 move (curs_x - 1, curs_y, 1);
1654 cset_attr[cset=0] = ATTR_LINEDRW;
1657 cset_attr[cset=0] = ATTR_ASCII;
1664 scroll (0, rows-1, -1, TRUE);
1665 else if (curs_y > 0)
1671 erase_lots(FALSE, FALSE, TRUE);
1675 erase_lots(TRUE, FALSE, TRUE);
1678 /* XXX Print cursor line */
1681 /* XXX Start controller mode */
1684 /* XXX Stop controller mode */
1687 termstate = VT52_Y1;
1690 ldisc->send ("\033/Z", 3);
1693 app_keypad_keys = TRUE;
1696 app_keypad_keys = FALSE;
1699 /* XXX This should switch to VT100 mode not current or default
1700 * VT mode. But this will only have effect in a VT220+
1706 /* XXX Enter auto print mode */
1709 /* XXX Exit auto print mode */
1712 /* XXX Print screen */
1717 termstate = VT52_Y2;
1718 move(curs_x, c-' ', 0);
1721 termstate = TOPLEVEL;
1722 move(c-' ', curs_y, 0);
1725 if (selstate != NO_SELECTION)
1726 check_selection (cpos, cpos+1);
1732 if(!beep_count) beep_overload=0;
1734 else if(beep_count && beep_count<5 && cfg.beep)
1739 * Compare two lines to determine whether they are sufficiently
1740 * alike to scroll-optimise one to the other. Return the degree of
1743 static int linecmp (unsigned long *a, unsigned long *b) {
1746 for (i=n=0; i < cols; i++)
1747 n += (*a++ == *b++);
1752 * Given a context, update the window. Out of paranoia, we don't
1753 * allow WM_PAINT responses to do scrolling optimisations.
1755 static void do_paint (Context ctx, int may_optimise){
1756 int i, j, start, our_curs_y;
1757 unsigned long attr, rv, cursor;
1762 if (blinker || !cfg.blink_cur)
1763 cursor = ATTR_ACTCURS;
1768 cursor = ATTR_PASCURS;
1771 rv = (rvideo ? ATTR_REVERSE : 0);
1772 our_curs_y = curs_y + (scrtop - disptop) / (cols+1);
1774 for (i=0; i<rows; i++) {
1775 int idx = i*(cols+1);
1776 int lattr = (disptop[idx+cols] & LATTR_MODE);
1777 for (j=0; j<=cols; j++,idx++) {
1778 unsigned long *d = disptop+idx;
1779 wanttext[idx] = lattr | ((*d ^ rv
1780 ^ (selstart <= d && d < selend ?
1781 ATTR_REVERSE : 0)) |
1782 (i==our_curs_y && j==curs_x ? cursor : 0));
1784 if (blink_is_real) {
1785 if (has_focus && tblinker && (wanttext[idx]&ATTR_BLINK) )
1787 wanttext[idx] &= ATTR_MASK;
1788 wanttext[idx] += ' ';
1790 wanttext[idx] &= ~ATTR_BLINK;
1796 * We would perform scrolling optimisations in here, if they
1797 * didn't have a nasty tendency to cause the whole sodding
1798 * program to hang for a second at speed-critical moments.
1799 * We'll leave it well alone...
1802 for (i=0; i<rows; i++) {
1803 int idx = i*(cols+1);
1804 int lattr = (wanttext[idx+cols] & LATTR_MODE);
1806 for (j=0; j<=cols; j++,idx++) {
1807 unsigned long t = wanttext[idx];
1808 int needs_update = (j < cols && t != disptext[idx]);
1809 int keep_going = (start != -1 && needs_update &&
1810 (t & ATTR_MASK) == attr &&
1811 j-start < sizeof(ch));
1812 if (start != -1 && !keep_going) {
1813 do_text (ctx, start, i, ch, j-start, attr, lattr);
1819 attr = t & ATTR_MASK;
1821 ch[j-start] = (char) (t & CHAR_MASK);
1829 * Flick the switch that says if blinking things should be shown or hidden.
1832 void term_blink(int flg) {
1833 static long last_blink = 0;
1834 static long last_tblink = 0;
1835 long now, blink_diff;
1837 now = GetTickCount();
1838 blink_diff = now-last_tblink;
1840 /* Make sure the text blinks no more than 2Hz */
1841 if (blink_diff<0 || blink_diff>450)
1844 tblinker = !tblinker;
1853 blink_diff = now-last_blink;
1855 /* Make sure the cursor blinks no more than 2Hz */
1856 if (blink_diff>=0 && blink_diff<450)
1864 * Invalidate the whole screen so it will be repainted in full.
1866 void term_invalidate(void) {
1869 for (i=0; i<rows*(cols+1); i++)
1870 disptext[i] = ATTR_INVALID;
1874 * Paint the window in response to a WM_PAINT message.
1876 void term_paint (Context ctx, int l, int t, int r, int b) {
1877 int i, j, left, top, right, bottom;
1879 left = l / font_width;
1880 right = (r - 1) / font_width;
1881 top = t / font_height;
1882 bottom = (b - 1) / font_height;
1883 for (i = top; i <= bottom && i < rows ; i++)
1885 if ( (disptext[i*(cols+1)+cols]&LATTR_MODE) == LATTR_NORM)
1886 for (j = left; j <= right && j < cols ; j++)
1887 disptext[i*(cols+1)+j] = ATTR_INVALID;
1889 for (j = left/2; j <= right/2+1 && j < cols ; j++)
1890 disptext[i*(cols+1)+j] = ATTR_INVALID;
1893 /* This should happen soon enough, also for some reason it sometimes
1894 * fails to actually do anything when re-sizing ... painting the wrong
1896 do_paint (ctx, FALSE);
1901 * Attempt to scroll the scrollback. The second parameter gives the
1902 * position we want to scroll to; the first is +1 to denote that
1903 * this position is relative to the beginning of the scrollback, -1
1904 * to denote it is relative to the end, and 0 to denote that it is
1905 * relative to the current position.
1907 void term_scroll (int rel, int where) {
1908 int n = where * (cols+1);
1910 disptop = (rel < 0 ? scrtop :
1911 rel > 0 ? sbtop : disptop) + n;
1912 if (disptop < sbtop)
1914 if (disptop > scrtop)
1920 static void clipme(long *top, long *bottom, char *workbuf) {
1921 char *wbptr; /* where next char goes within workbuf */
1922 int wblen = 0; /* workbuf len */
1923 int buflen; /* amount of memory allocated to workbuf */
1925 if ( workbuf != NULL ) { /* user supplied buffer? */
1926 buflen = -1; /* assume buffer passed in is big enough */
1927 wbptr = workbuf; /* start filling here */
1930 buflen = 0; /* No data is available yet */
1932 while (top < bottom) {
1934 unsigned long *lineend = top - (top-text) % (cols+1) + cols;
1935 unsigned long *nlpos = lineend;
1937 if (!(*nlpos & ATTR_WRAPPED)) {
1938 while ((nlpos[-1] & CHAR_MASK) == 0x20 && nlpos > top)
1943 while (top < nlpos && top < bottom)
1946 /* VT Specials -> ISO8859-1 */
1947 static const char poorman2[] =
1948 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
1951 int ch = (*top & CHAR_MASK);
1954 if ((*top & ATTR_LINEDRW) && ch >= 0x60 && ch < 0x7F) {
1956 *wbptr++ = poorman2[2*(ch-0x60)];
1957 if ( (x = poorman2[2*(ch-0x60)+1]) != ' ')
1962 if ((*top & ATTR_GBCHR) && ch == '#')
1963 *wbptr++ = (unsigned char) 0xA3;
1966 if ( wblen == buflen )
1968 workbuf = srealloc(workbuf, buflen += 100);
1969 wbptr = workbuf + wblen;
1972 *wbptr++ = (unsigned char) ch;
1977 for (i=0; i<sizeof(sel_nl); i++)
1979 if ( wblen == buflen )
1981 workbuf = srealloc(workbuf, buflen += 100);
1982 wbptr = workbuf + wblen;
1985 *wbptr++ = sel_nl[i];
1988 top = lineend + 1; /* start of next line */
1990 write_clip (workbuf, wblen, FALSE); /* transfer to clipboard */
1991 if ( buflen > 0 ) /* indicates we allocated this buffer */
1995 void term_copyall (void) {
1996 clipme(sbtop, cpos, NULL /* dynamic allocation */);
2000 * Spread the selection outwards according to the selection mode.
2002 static unsigned long *sel_spread_half (unsigned long *p, int dir) {
2003 unsigned long *linestart, *lineend;
2007 x = (p - text) % (cols+1);
2009 lineend = linestart + cols;
2014 * In this mode, every character is a separate unit, except
2015 * for runs of spaces at the end of a non-wrapping line.
2017 if (!(linestart[cols] & ATTR_WRAPPED)) {
2018 unsigned long *q = lineend;
2019 while (q > linestart && (q[-1] & CHAR_MASK) == 0x20)
2024 p = (dir == -1 ? q : lineend - 1);
2029 * In this mode, the units are maximal runs of characters
2030 * whose `wordness' has the same value.
2032 wvalue = wordness[*p & CHAR_MASK];
2034 while (p < lineend && wordness[p[1] & CHAR_MASK] == wvalue)
2037 while (p > linestart && wordness[p[-1] & CHAR_MASK] == wvalue)
2043 * In this mode, every line is a unit.
2045 p = (dir == -1 ? linestart : lineend - 1);
2051 static void sel_spread (void) {
2052 selstart = sel_spread_half (selstart, -1);
2053 selend = sel_spread_half (selend - 1, +1) + 1;
2056 void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) {
2057 unsigned long *selpoint;
2060 if (y>=rows) y = rows-1;
2068 if (x>=cols) x = cols-1;
2070 selpoint = disptop + y * (cols+1);
2071 if ((selpoint[cols]&LATTR_MODE) != LATTR_NORM)
2076 if (b == MB_SELECT && a == MA_CLICK) {
2078 selstate = ABOUT_TO;
2079 selanchor = selpoint;
2081 } else if (b == MB_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
2083 selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
2084 selstate = DRAGGING;
2085 selstart = selanchor = selpoint;
2086 selend = selstart + 1;
2088 } else if ((b == MB_SELECT && a == MA_DRAG) ||
2089 (b == MB_EXTEND && a != MA_RELEASE)) {
2090 if (selstate == ABOUT_TO && selanchor == selpoint)
2092 if (b == MB_EXTEND && a != MA_DRAG && selstate == SELECTED) {
2093 if (selpoint-selstart < (selend-selstart)/2)
2094 selanchor = selend - 1;
2096 selanchor = selstart;
2097 selstate = DRAGGING;
2099 if (selstate != ABOUT_TO && selstate != DRAGGING)
2100 selanchor = selpoint;
2101 selstate = DRAGGING;
2102 if (selpoint < selanchor) {
2103 selstart = selpoint;
2104 selend = selanchor + 1;
2106 selstart = selanchor;
2107 selend = selpoint + 1;
2110 } else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) {
2111 if (selstate == DRAGGING) {
2113 * We've completed a selection. We now transfer the
2114 * data to the clipboard.
2116 clipme(selstart, selend, selspace);
2117 selstate = SELECTED;
2119 selstate = NO_SELECTION;
2120 } else if (b == MB_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) {
2124 get_clip((void **) &data, &len);
2128 if (paste_buffer) sfree(paste_buffer);
2129 paste_pos = paste_hold = paste_len = 0;
2130 paste_buffer = smalloc(len);
2133 while (p < data+len) {
2134 while (p < data+len &&
2135 !(p <= data+len-sizeof(sel_nl) &&
2136 !memcmp(p, sel_nl, sizeof(sel_nl))))
2144 c=xlat_kbd2tty(q[i]);
2145 paste_buffer[paste_len++] = c;
2149 if (p <= data+len-sizeof(sel_nl) &&
2150 !memcmp(p, sel_nl, sizeof(sel_nl))) {
2151 paste_buffer[paste_len++] = '\r';
2152 p += sizeof(sel_nl);
2157 /* Assume a small paste will be OK in one go. */
2158 if (paste_len<256) {
2159 ldisc->send (paste_buffer, paste_len);
2160 if (paste_buffer) sfree(paste_buffer);
2162 paste_pos = paste_hold = paste_len = 0;
2165 get_clip(NULL, NULL);
2171 void term_nopaste() {
2172 if(paste_len == 0) return;
2173 sfree(paste_buffer);
2179 static long last_paste = 0;
2180 long now, paste_diff;
2182 if(paste_len == 0) return;
2184 /* Don't wait forever to paste */
2186 now = GetTickCount();
2187 paste_diff = now-last_paste;
2188 if (paste_diff>=0 && paste_diff<450)
2193 while(paste_pos<paste_len)
2196 while (n + paste_pos < paste_len) {
2197 if (paste_buffer[paste_pos + n++] == '\r')
2200 ldisc->send (paste_buffer+paste_pos, n);
2203 if (paste_pos < paste_len) {
2208 sfree(paste_buffer);
2213 static void deselect (void) {
2214 selstate = NO_SELECTION;
2215 selstart = selend = scrtop;
2218 void term_deselect (void) {
2224 * from_backend(), to get data from the backend for the terminal.
2226 void from_backend(int is_stderr, char *data, int len) {
2228 if (inbuf_head >= INBUF_SIZE)
2230 inbuf[inbuf_head++] = *data++;