14 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
15 #define CL_VT100 0x0002 /* VT100 */
16 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
17 #define CL_VT102 0x0008 /* VT102 */
18 #define CL_VT220 0x0010 /* VT220 */
19 #define CL_VT320 0x0020 /* VT320 */
20 #define CL_VT420 0x0040 /* VT420 */
21 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
22 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
23 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
24 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
25 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
27 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
28 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
29 #define TM_VT102 (TM_VT100AVO|CL_VT102)
30 #define TM_VT220 (TM_VT102|CL_VT220)
31 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
32 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
34 #define TM_PUTTY (0xFFFF)
36 #define compatibility(x) \
37 if ( ((CL_##x)&compatibility_level) == 0 ) { \
41 #define compatibility2(x,y) \
42 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
47 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
49 static int compatibility_level
= TM_PUTTY
;
51 static tree234
*scrollback
; /* lines scrolled off top of screen */
52 static tree234
*screen
; /* lines on primary screen */
53 static tree234
*alt_screen
; /* lines on alternate screen */
54 static int disptop
; /* distance scrolled back (0 or -ve) */
56 static unsigned long *cpos
; /* cursor position (convenience) */
58 static unsigned long *disptext
; /* buffer of text on real screen */
59 static unsigned long *dispcurs
; /* location of cursor on real screen */
60 static unsigned long curstype
; /* type of cursor on real screen */
62 #define VBELL_TIMEOUT 100 /* millisecond len of visual bell */
65 struct beeptime
*next
;
68 static struct beeptime
*beephead
, *beeptail
;
73 #define TSIZE (sizeof(unsigned long))
74 #define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
76 static unsigned long curr_attr
, save_attr
;
77 static unsigned long erase_char
= ERASE_CHAR
;
82 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
83 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
84 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
85 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (cols+1) + (p1).x - (p2).x )
86 #define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
87 #define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
89 /* Product-order comparisons for rectangular block selection. */
90 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
91 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
93 static bufchain inbuf
; /* terminal input buffer */
94 static pos curs
; /* cursor */
95 static pos savecurs
; /* saved cursor position */
96 static int marg_t
, marg_b
; /* scroll margins */
97 static int dec_om
; /* DEC origin mode flag */
98 static int wrap
, wrapnext
; /* wrap flags */
99 static int insert
; /* insert-mode flag */
100 static int cset
; /* 0 or 1: which char set */
101 static int save_cset
, save_csattr
; /* saved with cursor position */
102 static int save_utf
, save_wnext
; /* saved with cursor position */
103 static int rvideo
; /* global reverse video flag */
104 static unsigned long rvbell_startpoint
;/* for ESC[?5hESC[?5l vbell */
105 static int cursor_on
; /* cursor enabled flag */
106 static int reset_132
; /* Flag ESC c resets to 80 cols */
107 static int use_bce
; /* Use Background coloured erase */
108 static int blinker
; /* When blinking is the cursor on ? */
109 static int tblinker
; /* When the blinking text is on */
110 static int blink_is_real
; /* Actually blink blinking text */
111 static int term_echoing
; /* Does terminal want local echo? */
112 static int term_editing
; /* Does terminal want local edit? */
113 static int sco_acs
, save_sco_acs
; /* CSI 10,11,12m -> OEM charset */
114 static int vt52_bold
; /* Force bold on non-bold colours */
115 static int utf_state
; /* Is there a pending UTF-8 character */
116 static int utf_char
; /* and what is it so far. */
117 static int utf_size
; /* The size of the UTF character. */
119 static int xterm_mouse
; /* send mouse messages to app */
121 static unsigned long cset_attr
[2];
124 * Saved settings on the alternate screen.
126 static int alt_x
, alt_y
, alt_om
, alt_wrap
, alt_wnext
, alt_ins
, alt_cset
, alt_sco_acs
, alt_utf
;
127 static int alt_t
, alt_b
;
128 static int alt_which
;
130 #define ARGS_MAX 32 /* max # of esc sequence arguments */
131 #define ARG_DEFAULT 0 /* if an arg isn't specified */
132 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
133 static int esc_args
[ARGS_MAX
];
134 static int esc_nargs
;
135 static int esc_query
;
136 #define ANSI(x,y) ((x)+((y)<<8))
137 #define ANSI_QUE(x) ANSI(x,TRUE)
139 #define OSC_STR_MAX 2048
140 static int osc_strlen
;
141 static char osc_string
[OSC_STR_MAX
+ 1];
144 static char id_string
[1024] = "\033[?6c";
146 static unsigned char *tabs
;
158 OSC_STRING
, OSC_MAYBE_ST
,
167 NO_SELECTION
, ABOUT_TO
, DRAGGING
, SELECTED
170 LEXICOGRAPHIC
, RECTANGULAR
173 SM_CHAR
, SM_WORD
, SM_LINE
175 static pos selstart
, selend
, selanchor
;
177 static short wordness
[256] = {
178 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
179 0, 0, 0, 0, 0, 0, 0, 0, /* 01 */
180 0, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
181 2, 2, 1, 1, 1, 1, 1, 1, /* 23 */
182 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
183 2, 2, 2, 1, 1, 1, 1, 2, /* 45 */
184 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
185 2, 2, 2, 1, 1, 1, 1, 1, /* 67 */
186 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
187 1, 1, 1, 1, 1, 1, 1, 1, /* 89 */
188 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
189 1, 1, 1, 1, 1, 1, 1, 1, /* AB */
190 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
191 2, 2, 2, 2, 2, 2, 2, 2, /* CD */
192 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
193 2, 2, 2, 2, 2, 2, 2, 2, /* EF */
196 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
197 static wchar_t sel_nl
[] = SEL_NL
;
198 static wchar_t *paste_buffer
= 0;
199 static int paste_len
, paste_pos
, paste_hold
;
202 * Internal prototypes.
204 static void do_paint(Context
, int);
205 static void erase_lots(int, int, int);
206 static void swap_screen(int);
207 static void update_sbar(void);
208 static void deselect(void);
211 * Resize a line to make it `cols' columns wide.
213 unsigned long *resizeline(unsigned long *line
, int cols
)
216 unsigned long lineattrs
;
218 if (line
[0] != (unsigned long)cols
) {
220 * This line is the wrong length, which probably means it
221 * hasn't been accessed since a resize. Resize it now.
224 lineattrs
= line
[oldlen
+ 1];
225 line
= srealloc(line
, TSIZE
* (2 + cols
));
227 for (i
= oldlen
; i
< cols
; i
++)
228 line
[i
+ 1] = ERASE_CHAR
;
229 line
[cols
+ 1] = lineattrs
& LATTR_MODE
;
236 * Retrieve a line of the screen or of the scrollback, according to
237 * whether the y coordinate is non-negative or negative
240 unsigned long *lineptr(int y
, int lineno
)
242 unsigned long *line
, *newline
;
250 whichtree
= scrollback
;
251 treeindex
= y
+ count234(scrollback
);
253 line
= index234(whichtree
, treeindex
);
255 /* We assume that we don't screw up and retrieve something out of range. */
256 assert(line
!= NULL
);
258 newline
= resizeline(line
, cols
);
259 if (newline
!= line
) {
260 delpos234(whichtree
, treeindex
);
261 addpos234(whichtree
, newline
, treeindex
);
268 #define lineptr(x) lineptr(x,__LINE__)
270 * Set up power-on settings for the terminal.
272 static void power_on(void)
274 curs
.x
= curs
.y
= alt_x
= alt_y
= savecurs
.x
= savecurs
.y
= 0;
277 alt_b
= marg_b
= rows
- 1;
282 for (i
= 0; i
< cols
; i
++)
283 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
285 alt_om
= dec_om
= cfg
.dec_om
;
286 alt_wnext
= wrapnext
= alt_ins
= insert
= FALSE
;
287 alt_wrap
= wrap
= cfg
.wrap_mode
;
290 alt_sco_acs
= sco_acs
= 0;
291 cset_attr
[0] = cset_attr
[1] = ATTR_ASCII
;
296 save_attr
= curr_attr
= ATTR_DEFAULT
;
297 term_editing
= term_echoing
= FALSE
;
298 ldisc_send(NULL
, 0, 0); /* cause ldisc to notice changes */
299 app_cursor_keys
= cfg
.app_cursor
;
300 app_keypad_keys
= cfg
.app_keypad
;
302 blink_is_real
= cfg
.blinktext
;
303 erase_char
= ERASE_CHAR
;
307 for (i
= 0; i
< 256; i
++)
308 wordness
[i
] = cfg
.wordness
[i
];
312 erase_lots(FALSE
, TRUE
, TRUE
);
314 erase_lots(FALSE
, TRUE
, TRUE
);
319 * Force a screen update.
321 void term_update(void)
326 int need_sbar_update
= seen_disp_event
;
327 if ((seen_key_event
&& (cfg
.scroll_on_key
)) ||
328 (seen_disp_event
&& (cfg
.scroll_on_disp
))) {
329 disptop
= 0; /* return to main screen */
330 seen_disp_event
= seen_key_event
= 0;
331 need_sbar_update
= TRUE
;
333 if (need_sbar_update
)
336 sys_cursor(curs
.x
, curs
.y
- disptop
);
342 * Same as power_on(), but an external function.
344 void term_pwron(void)
354 * When the user reconfigures us, we need to check the forbidden-
355 * alternate-screen config option.
357 void term_reconfig(void)
359 if (cfg
.no_alt_screen
)
361 if (cfg
.no_remote_charset
) {
362 cset_attr
[0] = cset_attr
[1] = ATTR_ASCII
;
363 sco_acs
= alt_sco_acs
= 0;
369 * Clear the scrollback.
371 void term_clrsb(void)
375 while ((line
= delpos234(scrollback
, 0)) != NULL
) {
382 * Initialise the terminal.
386 screen
= alt_screen
= scrollback
= NULL
;
388 disptext
= dispcurs
= NULL
;
393 beephead
= beeptail
= NULL
;
396 beep_overloaded
= FALSE
;
400 * Set up the terminal for a given size.
402 void term_size(int newrows
, int newcols
, int newsavelines
)
405 unsigned long *newdisp
, *line
;
408 int save_alt_which
= alt_which
;
410 if (newrows
== rows
&& newcols
== cols
&& newsavelines
== savelines
)
411 return; /* nothing to do */
417 alt_b
= marg_b
= newrows
- 1;
420 scrollback
= newtree234(NULL
);
421 screen
= newtree234(NULL
);
426 * Resize the screen and scrollback. We only need to shift
427 * lines around within our data structures, because lineptr()
428 * will take care of resizing each individual line if
431 * - If the new screen and the old screen differ in length, we
432 * must shunt some lines in from the scrollback or out to
435 * - If doing that fails to provide us with enough material to
436 * fill the new screen (i.e. the number of rows needed in
437 * the new screen exceeds the total number in the previous
438 * screen+scrollback), we must invent some blank lines to
441 * - Then, if the new scrollback length is less than the
442 * amount of scrollback we actually have, we must throw some
445 sblen
= count234(scrollback
);
446 /* Do this loop to expand the screen if newrows > rows */
447 for (i
= rows
; i
< newrows
; i
++) {
449 line
= delpos234(scrollback
, --sblen
);
451 line
= smalloc(TSIZE
* (newcols
+ 2));
453 for (j
= 0; j
<= newcols
; j
++)
454 line
[j
+ 1] = ERASE_CHAR
;
456 addpos234(screen
, line
, 0);
458 /* Do this loop to shrink the screen if newrows < rows */
459 for (i
= newrows
; i
< rows
; i
++) {
460 line
= delpos234(screen
, 0);
461 addpos234(scrollback
, line
, sblen
++);
463 assert(count234(screen
) == newrows
);
464 while (sblen
> newsavelines
) {
465 line
= delpos234(scrollback
, 0);
469 assert(count234(scrollback
) <= newsavelines
);
472 newdisp
= smalloc(newrows
* (newcols
+ 1) * TSIZE
);
473 for (i
= 0; i
< newrows
* (newcols
+ 1); i
++)
474 newdisp
[i
] = ATTR_INVALID
;
479 newalt
= newtree234(NULL
);
480 for (i
= 0; i
< newrows
; i
++) {
481 line
= smalloc(TSIZE
* (newcols
+ 2));
483 for (j
= 0; j
<= newcols
; j
++)
484 line
[j
+ 1] = erase_char
;
485 addpos234(newalt
, line
, i
);
488 while (NULL
!= (line
= delpos234(alt_screen
, 0)))
490 freetree234(alt_screen
);
494 tabs
= srealloc(tabs
, newcols
* sizeof(*tabs
));
497 for (i
= (cols
> 0 ? cols
: 0); i
< newcols
; i
++)
498 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
502 curs
.y
+= newrows
- rows
;
505 if (curs
.y
>= newrows
)
506 curs
.y
= newrows
- 1;
507 if (curs
.x
>= newcols
)
508 curs
.x
= newcols
- 1;
510 wrapnext
= alt_wnext
= FALSE
;
514 savelines
= newsavelines
;
517 swap_screen(save_alt_which
);
527 static void swap_screen(int which
)
532 if (which
== alt_which
)
559 wrapnext
= alt_wnext
;
571 sco_acs
= alt_sco_acs
;
578 * Update the scroll bar.
580 static void update_sbar(void)
584 nscroll
= count234(scrollback
);
586 set_sbar(nscroll
+ rows
, nscroll
+ disptop
, rows
);
590 * Check whether the region bounded by the two pointers intersects
591 * the scroll region, and de-select the on-screen selection if so.
593 static void check_selection(pos from
, pos to
)
595 if (poslt(from
, selend
) && poslt(selstart
, to
))
600 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
601 * for backward.) `sb' is TRUE if the scrolling is permitted to
602 * affect the scrollback buffer.
604 * NB this function invalidates all pointers into lines of the
605 * screen data structures. In particular, you MUST call fix_cpos
606 * after calling scroll() and before doing anything else that
607 * uses the cpos shortcut pointer.
609 static void scroll(int topline
, int botline
, int lines
, int sb
)
611 unsigned long *line
, *line2
;
614 if (topline
!= 0 || alt_which
!= 0)
619 line
= delpos234(screen
, botline
);
620 line
= resizeline(line
, cols
);
621 for (i
= 0; i
< cols
; i
++)
622 line
[i
+ 1] = erase_char
;
624 addpos234(screen
, line
, topline
);
626 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
628 if (selstart
.y
> botline
) {
629 selstart
.y
= botline
;
633 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
635 if (selend
.y
> botline
) {
645 line
= delpos234(screen
, topline
);
646 if (sb
&& savelines
> 0) {
647 int sblen
= count234(scrollback
);
649 * We must add this line to the scrollback. We'll
650 * remove a line from the top of the scrollback to
651 * replace it, or allocate a new one if the
652 * scrollback isn't full.
654 if (sblen
== savelines
) {
655 sblen
--, line2
= delpos234(scrollback
, 0);
657 line2
= smalloc(TSIZE
* (cols
+ 2));
660 addpos234(scrollback
, line
, sblen
);
664 * If the user is currently looking at part of the
665 * scrollback, and they haven't enabled any options
666 * that are going to reset the scrollback as a
667 * result of this movement, then the chances are
668 * they'd like to keep looking at the same line. So
669 * we move their viewpoint at the same rate as the
670 * scroll, at least until their viewpoint hits the
671 * top end of the scrollback buffer, at which point
672 * we don't have the choice any more.
674 * Thanks to Jan Holmen Holsten for the idea and
675 * initial implementation.
677 if (disptop
> -savelines
&& disptop
< 0)
680 line
= resizeline(line
, cols
);
681 for (i
= 0; i
< cols
; i
++)
682 line
[i
+ 1] = erase_char
;
684 addpos234(screen
, line
, botline
);
687 * If the selection endpoints move into the scrollback,
688 * we keep them moving until they hit the top. However,
689 * of course, if the line _hasn't_ moved into the
690 * scrollback then we don't do this, and cut them off
691 * at the top of the scroll region.
693 * This applies to selstart and selend (for an existing
694 * selection), and also selanchor (for one being
695 * selected as we speak).
697 seltop
= sb ?
-savelines
: topline
;
699 if (selstart
.y
>= seltop
&& selstart
.y
<= botline
) {
701 if (selstart
.y
< seltop
) {
706 if (selend
.y
>= seltop
&& selend
.y
<= botline
) {
708 if (selend
.y
< seltop
) {
713 if (selanchor
.y
>= seltop
&& selanchor
.y
<= botline
) {
715 if (selanchor
.y
< seltop
) {
716 selanchor
.y
= seltop
;
727 * Move the cursor to a given position, clipping at boundaries. We
728 * may or may not want to clip at the scroll margin: marg_clip is 0
729 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
730 * even _being_ outside the margins.
732 static void move(int x
, int y
, int marg_clip
)
739 if ((curs
.y
>= marg_t
|| marg_clip
== 2) && y
< marg_t
)
741 if ((curs
.y
<= marg_b
|| marg_clip
== 2) && y
> marg_b
)
755 * Save or restore the cursor and SGR mode.
757 static void save_cursor(int save
)
761 save_attr
= curr_attr
;
764 save_wnext
= wrapnext
;
765 save_csattr
= cset_attr
[cset
];
766 save_sco_acs
= sco_acs
;
769 /* Make sure the window hasn't shrunk since the save */
775 curr_attr
= save_attr
;
778 wrapnext
= save_wnext
;
780 * wrapnext might reset to False if the x position is no
781 * longer at the rightmost edge.
783 if (wrapnext
&& curs
.x
< cols
-1)
785 cset_attr
[cset
] = save_csattr
;
786 sco_acs
= save_sco_acs
;
789 erase_char
= (' ' | ATTR_ASCII
|
790 (curr_attr
& (ATTR_FGMASK
| ATTR_BGMASK
)));
795 * Erase a large portion of the screen: the whole screen, or the
796 * whole line, or parts thereof.
798 static void erase_lots(int line_only
, int from_begin
, int to_end
)
802 unsigned long *ldata
;
824 check_selection(start
, end
);
826 /* Clear screen also forces a full window redraw, just in case. */
827 if (start
.y
== 0 && start
.x
== 0 && end
.y
== rows
)
830 ldata
= lineptr(start
.y
);
831 while (poslt(start
, end
)) {
832 if (start
.x
== cols
&& !erase_lattr
)
833 ldata
[start
.x
] &= ~LATTR_WRAPPED
;
835 ldata
[start
.x
] = erase_char
;
836 if (incpos(start
) && start
.y
< rows
)
837 ldata
= lineptr(start
.y
);
842 * Insert or delete characters within the current line. n is +ve if
843 * insertion is desired, and -ve for deletion.
845 static void insch(int n
)
847 int dir
= (n
< 0 ?
-1 : +1);
850 unsigned long *ldata
;
852 n
= (n
< 0 ?
-n
: n
);
853 if (n
> cols
- curs
.x
)
855 m
= cols
- curs
.x
- n
;
857 cursplus
.x
= curs
.x
+ n
;
858 check_selection(curs
, cursplus
);
859 ldata
= lineptr(curs
.y
);
861 memmove(ldata
+ curs
.x
, ldata
+ curs
.x
+ n
, m
* TSIZE
);
863 ldata
[curs
.x
+ m
++] = erase_char
;
865 memmove(ldata
+ curs
.x
+ n
, ldata
+ curs
.x
, m
* TSIZE
);
867 ldata
[curs
.x
+ n
] = erase_char
;
872 * Toggle terminal mode `mode' to state `state'. (`query' indicates
873 * whether the mode is a DEC private one or a normal one.)
875 static void toggle_mode(int mode
, int query
, int state
)
881 case 1: /* application cursor keys */
882 app_cursor_keys
= state
;
884 case 2: /* VT52 mode */
887 blink_is_real
= FALSE
;
890 blink_is_real
= cfg
.blinktext
;
893 case 3: /* 80/132 columns */
895 if (!cfg
.no_remote_resize
)
896 request_resize(state ?
132 : 80, rows
);
899 case 5: /* reverse video */
901 * Toggle reverse video. If we receive an OFF within the
902 * visual bell timeout period after an ON, we trigger an
903 * effective visual bell, so that ESC[?5hESC[?5l will
904 * always be an actually _visible_ visual bell.
906 ticks
= GetTickCount();
907 /* turn off a previous vbell to avoid inconsistencies */
908 if (ticks
- vbell_startpoint
>= VBELL_TIMEOUT
)
910 if (rvideo
&& !state
&& /* we're turning it off... */
911 (ticks
- rvbell_startpoint
) < VBELL_TIMEOUT
) { /* ...soon */
912 /* If there's no vbell timeout already, or this one lasts
913 * longer, replace vbell_timeout with ours. */
915 (rvbell_startpoint
- vbell_startpoint
< VBELL_TIMEOUT
))
916 vbell_startpoint
= rvbell_startpoint
;
917 in_vbell
= TRUE
; /* we may clear rvideo but we set in_vbell */
918 } else if (!rvideo
&& state
) {
919 /* This is an ON, so we notice the time and save it. */
920 rvbell_startpoint
= ticks
;
923 seen_disp_event
= TRUE
;
927 case 6: /* DEC origin mode */
930 case 7: /* auto wrap */
933 case 8: /* auto key repeat */
936 case 10: /* set local edit mode */
937 term_editing
= state
;
938 ldisc_send(NULL
, 0, 0); /* cause ldisc to notice changes */
940 case 25: /* enable/disable cursor */
941 compatibility2(OTHER
, VT220
);
943 seen_disp_event
= TRUE
;
945 case 47: /* alternate screen */
946 compatibility(OTHER
);
948 swap_screen(cfg
.no_alt_screen ?
0 : state
);
951 case 1000: /* xterm mouse 1 */
952 xterm_mouse
= state ?
1 : 0;
953 set_raw_mouse_mode(state
);
955 case 1002: /* xterm mouse 2 */
956 xterm_mouse
= state ?
2 : 0;
957 set_raw_mouse_mode(state
);
961 case 4: /* set insert mode */
962 compatibility(VT102
);
965 case 12: /* set echo mode */
966 term_echoing
= !state
;
967 ldisc_send(NULL
, 0, 0); /* cause ldisc to notice changes */
969 case 20: /* Return sends ... */
970 cr_lf_return
= state
;
972 case 34: /* Make cursor BIG */
973 compatibility2(OTHER
, VT220
);
979 * Process an OSC sequence: set window title or icon name.
981 static void do_osc(void)
985 wordness
[(unsigned char) osc_string
[osc_strlen
]] = esc_args
[0];
987 osc_string
[osc_strlen
] = '\0';
988 switch (esc_args
[0]) {
991 if (!cfg
.no_remote_wintitle
)
992 set_icon(osc_string
);
993 if (esc_args
[0] == 1)
995 /* fall through: parameter 0 means set both */
998 if (!cfg
.no_remote_wintitle
)
999 set_title(osc_string
);
1006 * Remove everything currently in `inbuf' and stick it up on the
1007 * in-memory display. There's a big state machine in here to
1008 * process escape sequences...
1013 unsigned char localbuf
[256], *chars
;
1018 while (nchars
> 0 || bufchain_size(&inbuf
) > 0) {
1022 bufchain_prefix(&inbuf
, &ret
, &nchars
);
1023 if (nchars
> sizeof(localbuf
))
1024 nchars
= sizeof(localbuf
);
1025 memcpy(localbuf
, ret
, nchars
);
1026 bufchain_consume(&inbuf
, nchars
);
1028 assert(chars
!= NULL
);
1034 * Optionally log the session traffic to a file. Useful for
1035 * debugging and possibly also useful for actual logging.
1037 if (cfg
.logtype
== LGTYP_DEBUG
)
1038 logtraffic((unsigned char) c
, LGTYP_DEBUG
);
1044 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1045 * be able to display 8-bit characters, but I'll let that go 'cause
1049 /* First see about all those translations. */
1050 if (termstate
== TOPLEVEL
) {
1052 switch (utf_state
) {
1055 /* UTF-8 must be stateless so we ignore iso2022. */
1056 if (unitab_ctrl
[c
] != 0xFF)
1058 else c
= ((unsigned char)c
) | ATTR_ASCII
;
1060 } else if ((c
& 0xe0) == 0xc0) {
1061 utf_size
= utf_state
= 1;
1062 utf_char
= (c
& 0x1f);
1063 } else if ((c
& 0xf0) == 0xe0) {
1064 utf_size
= utf_state
= 2;
1065 utf_char
= (c
& 0x0f);
1066 } else if ((c
& 0xf8) == 0xf0) {
1067 utf_size
= utf_state
= 3;
1068 utf_char
= (c
& 0x07);
1069 } else if ((c
& 0xfc) == 0xf8) {
1070 utf_size
= utf_state
= 4;
1071 utf_char
= (c
& 0x03);
1072 } else if ((c
& 0xfe) == 0xfc) {
1073 utf_size
= utf_state
= 5;
1074 utf_char
= (c
& 0x01);
1085 if ((c
& 0xC0) != 0x80) {
1091 utf_char
= (utf_char
<< 6) | (c
& 0x3f);
1097 /* Is somebody trying to be evil! */
1099 (c
< 0x800 && utf_size
>= 2) ||
1100 (c
< 0x10000 && utf_size
>= 3) ||
1101 (c
< 0x200000 && utf_size
>= 4) ||
1102 (c
< 0x4000000 && utf_size
>= 5))
1105 /* Unicode line separator and paragraph separator are CR-LF */
1106 if (c
== 0x2028 || c
== 0x2029)
1109 /* High controls are probably a Baaad idea too. */
1113 /* The UTF-16 surrogates are not nice either. */
1114 /* The standard give the option of decoding these:
1115 * I don't want to! */
1116 if (c
>= 0xD800 && c
< 0xE000)
1119 /* ISO 10646 characters now limited to UTF-16 range. */
1123 /* This is currently a TagPhobic application.. */
1124 if (c
>= 0xE0000 && c
<= 0xE007F)
1127 /* U+FEFF is best seen as a null. */
1130 /* But U+FFFE is an error. */
1131 if (c
== 0xFFFE || c
== 0xFFFF)
1134 /* Oops this is a 16bit implementation */
1139 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1141 (c
!='\033' && c
!='\n' && c
!='\r' && c
!='\b'))
1143 if (sco_acs
== 2) c
^= 0x80;
1146 switch (cset_attr
[cset
]) {
1148 * Linedraw characters are different from 'ESC ( B'
1149 * only for a small range. For ones outside that
1150 * range, make sure we use the same font as well as
1151 * the same encoding.
1154 if (unitab_ctrl
[c
] != 0xFF)
1157 c
= ((unsigned char) c
) | ATTR_LINEDRW
;
1161 /* If UK-ASCII, make the '#' a LineDraw Pound */
1163 c
= '}' | ATTR_LINEDRW
;
1166 /*FALLTHROUGH*/ case ATTR_ASCII
:
1167 if (unitab_ctrl
[c
] != 0xFF)
1170 c
= ((unsigned char) c
) | ATTR_ASCII
;
1173 if (c
>=' ') c
= ((unsigned char)c
) | ATTR_SCOACS
;
1179 /* How about C1 controls ? */
1180 if ((c
& -32) == 0x80 && termstate
< DO_CTRLS
&& !vt52_mode
&&
1181 has_compat(VT220
)) {
1182 termstate
= SEEN_ESC
;
1184 c
= '@' + (c
& 0x1F);
1187 /* Or the GL control. */
1188 if (c
== '\177' && termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
1189 if (curs
.x
&& !wrapnext
)
1193 if (!cfg
.no_dbackspace
) /* destructive bksp might be disabled */
1194 *cpos
= (' ' | curr_attr
| ATTR_ASCII
);
1196 /* Or normal C0 controls. */
1197 if ((c
& -32) == 0 && termstate
< DO_CTRLS
) {
1199 case '\005': /* terminal type query */
1200 /* Strictly speaking this is VT100 but a VT100 defaults to
1201 * no response. Other terminals respond at their option.
1203 * Don't put a CR in the default string as this tends to
1204 * upset some weird software.
1206 * An xterm returns "xterm" (5 characters)
1208 compatibility(ANSIMIN
);
1210 char abuf
[256], *s
, *d
;
1212 for (s
= cfg
.answerback
, d
= abuf
; *s
; s
++) {
1214 if (*s
>= 'a' && *s
<= 'z')
1215 *d
++ = (*s
- ('a' - 1));
1216 else if ((*s
>= '@' && *s
<= '_') ||
1217 *s
== '?' || (*s
& 0x80))
1222 } else if (*s
== '^') {
1227 lpage_send(CP_ACP
, abuf
, d
- abuf
, 0);
1232 struct beeptime
*newbeep
;
1233 unsigned long ticks
;
1235 ticks
= GetTickCount();
1237 if (!beep_overloaded
) {
1238 newbeep
= smalloc(sizeof(struct beeptime
));
1239 newbeep
->ticks
= ticks
;
1240 newbeep
->next
= NULL
;
1244 beeptail
->next
= newbeep
;
1250 * Throw out any beeps that happened more than
1254 beephead
->ticks
< ticks
- cfg
.bellovl_t
) {
1255 struct beeptime
*tmp
= beephead
;
1256 beephead
= tmp
->next
;
1263 if (cfg
.bellovl
&& beep_overloaded
&&
1264 ticks
- lastbeep
>= (unsigned)cfg
.bellovl_s
) {
1266 * If we're currently overloaded and the
1267 * last beep was more than s seconds ago,
1268 * leave overload mode.
1270 beep_overloaded
= FALSE
;
1271 } else if (cfg
.bellovl
&& !beep_overloaded
&&
1272 nbeeps
>= cfg
.bellovl_n
) {
1274 * Now, if we have n or more beeps
1275 * remaining in the queue, go into overload
1278 beep_overloaded
= TRUE
;
1283 * Perform an actual beep if we're not overloaded.
1285 if (!cfg
.bellovl
|| !beep_overloaded
) {
1287 if (cfg
.beep
== BELL_VISUAL
) {
1289 vbell_startpoint
= ticks
;
1297 if (curs
.x
== 0 && (curs
.y
== 0 || wrap
== 0));
1298 else if (curs
.x
== 0 && curs
.y
> 0)
1299 curs
.x
= cols
- 1, curs
.y
--;
1305 seen_disp_event
= TRUE
;
1308 compatibility(VT100
);
1312 compatibility(VT100
);
1317 termstate
= VT52_ESC
;
1319 compatibility(ANSIMIN
);
1320 termstate
= SEEN_ESC
;
1328 seen_disp_event
= TRUE
;
1330 logtraffic((unsigned char) c
, LGTYP_ASCII
);
1333 if (has_compat(SCOANSI
)) {
1335 erase_lots(FALSE
, FALSE
, TRUE
);
1338 seen_disp_event
= 1;
1342 compatibility(VT100
);
1344 if (curs
.y
== marg_b
)
1345 scroll(marg_t
, marg_b
, 1, TRUE
);
1346 else if (curs
.y
< rows
- 1)
1352 seen_disp_event
= 1;
1354 logtraffic((unsigned char) c
, LGTYP_ASCII
);
1358 pos old_curs
= curs
;
1359 unsigned long *ldata
= lineptr(curs
.y
);
1363 } while (curs
.x
< cols
- 1 && !tabs
[curs
.x
]);
1365 if ((ldata
[cols
] & LATTR_MODE
) != LATTR_NORM
) {
1366 if (curs
.x
>= cols
/ 2)
1367 curs
.x
= cols
/ 2 - 1;
1374 check_selection(old_curs
, curs
);
1376 seen_disp_event
= TRUE
;
1380 switch (termstate
) {
1382 /* Only graphic characters get this far, ctrls are stripped above */
1383 if (wrapnext
&& wrap
) {
1384 cpos
[1] |= LATTR_WRAPPED
;
1385 if (curs
.y
== marg_b
)
1386 scroll(marg_t
, marg_b
, 1, TRUE
);
1387 else if (curs
.y
< rows
- 1)
1395 if (selstate
!= NO_SELECTION
) {
1396 pos cursplus
= curs
;
1398 check_selection(curs
, cursplus
);
1400 if ((c
& CSET_MASK
) == ATTR_ASCII
|| (c
& CSET_MASK
) == 0)
1401 logtraffic((unsigned char) c
, LGTYP_ASCII
);
1403 extern int wcwidth(wchar_t ucs
);
1408 width
= wcwidth((wchar_t) c
);
1411 *cpos
++ = c
| curr_attr
;
1412 if (++curs
.x
== cols
) {
1413 *cpos
|= LATTR_WRAPPED
;
1414 if (curs
.y
== marg_b
)
1415 scroll(marg_t
, marg_b
, 1, TRUE
);
1416 else if (curs
.y
< rows
- 1)
1421 *cpos
++ = UCSWIDE
| curr_attr
;
1424 *cpos
++ = c
| curr_attr
;
1431 if (curs
.x
== cols
) {
1435 if (wrap
&& vt52_mode
) {
1436 cpos
[1] |= LATTR_WRAPPED
;
1437 if (curs
.y
== marg_b
)
1438 scroll(marg_t
, marg_b
, 1, TRUE
);
1439 else if (curs
.y
< rows
- 1)
1446 seen_disp_event
= 1;
1451 * This state is virtually identical to SEEN_ESC, with the
1452 * exception that we have an OSC sequence in the pipeline,
1453 * and _if_ we see a backslash, we process it.
1457 termstate
= TOPLEVEL
;
1460 /* else fall through */
1462 if (c
>= ' ' && c
<= '/') {
1469 termstate
= TOPLEVEL
;
1470 switch (ANSI(c
, esc_query
)) {
1471 case '[': /* enter CSI mode */
1472 termstate
= SEEN_CSI
;
1474 esc_args
[0] = ARG_DEFAULT
;
1477 case ']': /* xterm escape sequences */
1478 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1479 compatibility(OTHER
);
1480 termstate
= SEEN_OSC
;
1483 case '7': /* save cursor */
1484 compatibility(VT100
);
1487 case '8': /* restore cursor */
1488 compatibility(VT100
);
1490 seen_disp_event
= TRUE
;
1493 compatibility(VT100
);
1494 app_keypad_keys
= TRUE
;
1497 compatibility(VT100
);
1498 app_keypad_keys
= FALSE
;
1500 case 'D': /* exactly equivalent to LF */
1501 compatibility(VT100
);
1502 if (curs
.y
== marg_b
)
1503 scroll(marg_t
, marg_b
, 1, TRUE
);
1504 else if (curs
.y
< rows
- 1)
1508 seen_disp_event
= TRUE
;
1510 case 'E': /* exactly equivalent to CR-LF */
1511 compatibility(VT100
);
1513 if (curs
.y
== marg_b
)
1514 scroll(marg_t
, marg_b
, 1, TRUE
);
1515 else if (curs
.y
< rows
- 1)
1519 seen_disp_event
= TRUE
;
1521 case 'M': /* reverse index - backwards LF */
1522 compatibility(VT100
);
1523 if (curs
.y
== marg_t
)
1524 scroll(marg_t
, marg_b
, -1, TRUE
);
1525 else if (curs
.y
> 0)
1529 seen_disp_event
= TRUE
;
1531 case 'Z': /* terminal type query */
1532 compatibility(VT100
);
1533 ldisc_send(id_string
, strlen(id_string
), 0);
1535 case 'c': /* restore power-on settings */
1536 compatibility(VT100
);
1539 if (!cfg
.no_remote_resize
)
1540 request_resize(80, rows
);
1545 seen_disp_event
= TRUE
;
1547 case 'H': /* set a tab */
1548 compatibility(VT100
);
1549 tabs
[curs
.x
] = TRUE
;
1552 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1553 compatibility(VT100
);
1555 unsigned long *ldata
;
1559 for (i
= 0; i
< rows
; i
++) {
1561 for (j
= 0; j
< cols
; j
++)
1562 ldata
[j
] = ATTR_DEFAULT
| 'E';
1566 seen_disp_event
= TRUE
;
1567 scrtop
.x
= scrtop
.y
= 0;
1570 check_selection(scrtop
, scrbot
);
1574 case ANSI('3', '#'):
1575 case ANSI('4', '#'):
1576 case ANSI('5', '#'):
1577 case ANSI('6', '#'):
1578 compatibility(VT100
);
1580 unsigned long nlattr
;
1581 unsigned long *ldata
;
1582 switch (ANSI(c
, esc_query
)) {
1583 case ANSI('3', '#'):
1586 case ANSI('4', '#'):
1589 case ANSI('5', '#'):
1590 nlattr
= LATTR_NORM
;
1592 default: /* spiritually case ANSI('6', '#'): */
1593 nlattr
= LATTR_WIDE
;
1596 ldata
= lineptr(curs
.y
);
1597 ldata
[cols
] &= ~LATTR_MODE
;
1598 ldata
[cols
] |= nlattr
;
1602 case ANSI('A', '('):
1603 compatibility(VT100
);
1604 if (!cfg
.no_remote_charset
)
1605 cset_attr
[0] = ATTR_GBCHR
;
1607 case ANSI('B', '('):
1608 compatibility(VT100
);
1609 if (!cfg
.no_remote_charset
)
1610 cset_attr
[0] = ATTR_ASCII
;
1612 case ANSI('0', '('):
1613 compatibility(VT100
);
1614 if (!cfg
.no_remote_charset
)
1615 cset_attr
[0] = ATTR_LINEDRW
;
1617 case ANSI('U', '('):
1618 compatibility(OTHER
);
1619 if (!cfg
.no_remote_charset
)
1620 cset_attr
[0] = ATTR_SCOACS
;
1623 case ANSI('A', ')'):
1624 compatibility(VT100
);
1625 if (!cfg
.no_remote_charset
)
1626 cset_attr
[1] = ATTR_GBCHR
;
1628 case ANSI('B', ')'):
1629 compatibility(VT100
);
1630 if (!cfg
.no_remote_charset
)
1631 cset_attr
[1] = ATTR_ASCII
;
1633 case ANSI('0', ')'):
1634 compatibility(VT100
);
1635 if (!cfg
.no_remote_charset
)
1636 cset_attr
[1] = ATTR_LINEDRW
;
1638 case ANSI('U', ')'):
1639 compatibility(OTHER
);
1640 if (!cfg
.no_remote_charset
)
1641 cset_attr
[1] = ATTR_SCOACS
;
1644 case ANSI('8', '%'): /* Old Linux code */
1645 case ANSI('G', '%'):
1646 compatibility(OTHER
);
1647 if (!cfg
.no_remote_charset
)
1650 case ANSI('@', '%'):
1651 compatibility(OTHER
);
1652 if (!cfg
.no_remote_charset
)
1658 termstate
= TOPLEVEL
; /* default */
1660 if (esc_nargs
<= ARGS_MAX
) {
1661 if (esc_args
[esc_nargs
- 1] == ARG_DEFAULT
)
1662 esc_args
[esc_nargs
- 1] = 0;
1663 esc_args
[esc_nargs
- 1] =
1664 10 * esc_args
[esc_nargs
- 1] + c
- '0';
1666 termstate
= SEEN_CSI
;
1667 } else if (c
== ';') {
1668 if (++esc_nargs
<= ARGS_MAX
)
1669 esc_args
[esc_nargs
- 1] = ARG_DEFAULT
;
1670 termstate
= SEEN_CSI
;
1671 } else if (c
< '@') {
1678 termstate
= SEEN_CSI
;
1680 switch (ANSI(c
, esc_query
)) {
1681 case 'A': /* move up N lines */
1682 move(curs
.x
, curs
.y
- def(esc_args
[0], 1), 1);
1683 seen_disp_event
= TRUE
;
1685 case 'e': /* move down N lines */
1686 compatibility(ANSI
);
1689 move(curs
.x
, curs
.y
+ def(esc_args
[0], 1), 1);
1690 seen_disp_event
= TRUE
;
1692 case ANSI('c', '>'): /* report xterm version */
1693 compatibility(OTHER
);
1694 /* this reports xterm version 136 so that VIM can
1695 use the drag messages from the mouse reporting */
1696 ldisc_send("\033[>0;136;0c", 11, 0);
1698 case 'a': /* move right N cols */
1699 compatibility(ANSI
);
1702 move(curs
.x
+ def(esc_args
[0], 1), curs
.y
, 1);
1703 seen_disp_event
= TRUE
;
1705 case 'D': /* move left N cols */
1706 move(curs
.x
- def(esc_args
[0], 1), curs
.y
, 1);
1707 seen_disp_event
= TRUE
;
1709 case 'E': /* move down N lines and CR */
1710 compatibility(ANSI
);
1711 move(0, curs
.y
+ def(esc_args
[0], 1), 1);
1712 seen_disp_event
= TRUE
;
1714 case 'F': /* move up N lines and CR */
1715 compatibility(ANSI
);
1716 move(0, curs
.y
- def(esc_args
[0], 1), 1);
1717 seen_disp_event
= TRUE
;
1720 case '`': /* set horizontal posn */
1721 compatibility(ANSI
);
1722 move(def(esc_args
[0], 1) - 1, curs
.y
, 0);
1723 seen_disp_event
= TRUE
;
1725 case 'd': /* set vertical posn */
1726 compatibility(ANSI
);
1728 (dec_om ? marg_t
: 0) + def(esc_args
[0],
1731 seen_disp_event
= TRUE
;
1734 case 'f': /* set horz and vert posns at once */
1736 esc_args
[1] = ARG_DEFAULT
;
1737 move(def(esc_args
[1], 1) - 1,
1738 (dec_om ? marg_t
: 0) + def(esc_args
[0],
1741 seen_disp_event
= TRUE
;
1743 case 'J': /* erase screen or parts of it */
1745 unsigned int i
= def(esc_args
[0], 0) + 1;
1748 erase_lots(FALSE
, !!(i
& 2), !!(i
& 1));
1751 seen_disp_event
= TRUE
;
1753 case 'K': /* erase line or parts of it */
1755 unsigned int i
= def(esc_args
[0], 0) + 1;
1758 erase_lots(TRUE
, !!(i
& 2), !!(i
& 1));
1760 seen_disp_event
= TRUE
;
1762 case 'L': /* insert lines */
1763 compatibility(VT102
);
1764 if (curs
.y
<= marg_b
)
1765 scroll(curs
.y
, marg_b
, -def(esc_args
[0], 1),
1768 seen_disp_event
= TRUE
;
1770 case 'M': /* delete lines */
1771 compatibility(VT102
);
1772 if (curs
.y
<= marg_b
)
1773 scroll(curs
.y
, marg_b
, def(esc_args
[0], 1),
1776 seen_disp_event
= TRUE
;
1778 case '@': /* insert chars */
1779 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1780 compatibility(VT102
);
1781 insch(def(esc_args
[0], 1));
1782 seen_disp_event
= TRUE
;
1784 case 'P': /* delete chars */
1785 compatibility(VT102
);
1786 insch(-def(esc_args
[0], 1));
1787 seen_disp_event
= TRUE
;
1789 case 'c': /* terminal type query */
1790 compatibility(VT100
);
1791 /* This is the response for a VT102 */
1792 ldisc_send(id_string
, strlen(id_string
), 0);
1794 case 'n': /* cursor position query */
1795 if (esc_args
[0] == 6) {
1797 sprintf(buf
, "\033[%d;%dR", curs
.y
+ 1,
1799 ldisc_send(buf
, strlen(buf
), 0);
1800 } else if (esc_args
[0] == 5) {
1801 ldisc_send("\033[0n", 4, 0);
1804 case 'h': /* toggle modes to high */
1806 compatibility(VT100
);
1809 for (i
= 0; i
< esc_nargs
; i
++)
1810 toggle_mode(esc_args
[i
], esc_query
, TRUE
);
1813 case 'l': /* toggle modes to low */
1815 compatibility(VT100
);
1818 for (i
= 0; i
< esc_nargs
; i
++)
1819 toggle_mode(esc_args
[i
], esc_query
, FALSE
);
1822 case 'g': /* clear tabs */
1823 compatibility(VT100
);
1824 if (esc_nargs
== 1) {
1825 if (esc_args
[0] == 0) {
1826 tabs
[curs
.x
] = FALSE
;
1827 } else if (esc_args
[0] == 3) {
1829 for (i
= 0; i
< cols
; i
++)
1834 case 'r': /* set scroll margins */
1835 compatibility(VT100
);
1836 if (esc_nargs
<= 2) {
1838 top
= def(esc_args
[0], 1) - 1;
1839 bot
= (esc_nargs
<= 1
1841 0 ? rows
: def(esc_args
[1], rows
)) - 1;
1844 /* VTTEST Bug 9 - if region is less than 2 lines
1845 * don't change region.
1847 if (bot
- top
> 0) {
1852 * I used to think the cursor should be
1853 * placed at the top of the newly marginned
1854 * area. Apparently not: VMS TPU falls over
1857 * Well actually it should for Origin mode - RDB
1859 curs
.y
= (dec_om ? marg_t
: 0);
1861 seen_disp_event
= TRUE
;
1865 case 'm': /* set graphics rendition */
1868 * A VT100 without the AVO only had one attribute, either
1869 * underline or reverse video depending on the cursor type,
1870 * this was selected by CSI 7m.
1873 * This is sometimes DIM, eg on the GIGI and Linux
1875 * This is sometimes INVIS various ANSI.
1877 * This like 22 disables BOLD, DIM and INVIS
1879 * The ANSI colours appear on any terminal that has colour
1880 * (obviously) but the interaction between sgr0 and the
1881 * colours varies but is usually related to the background
1882 * colour erase item.
1883 * The interaction between colour attributes and the mono
1884 * ones is also very implementation dependent.
1886 * The 39 and 49 attributes are likely to be unimplemented.
1889 for (i
= 0; i
< esc_nargs
; i
++) {
1890 switch (def(esc_args
[i
], 0)) {
1891 case 0: /* restore defaults */
1892 curr_attr
= ATTR_DEFAULT
;
1894 case 1: /* enable bold */
1895 compatibility(VT100AVO
);
1896 curr_attr
|= ATTR_BOLD
;
1898 case 21: /* (enable double underline) */
1899 compatibility(OTHER
);
1900 case 4: /* enable underline */
1901 compatibility(VT100AVO
);
1902 curr_attr
|= ATTR_UNDER
;
1904 case 5: /* enable blink */
1905 compatibility(VT100AVO
);
1906 curr_attr
|= ATTR_BLINK
;
1908 case 7: /* enable reverse video */
1909 curr_attr
|= ATTR_REVERSE
;
1911 case 10: /* SCO acs off */
1912 compatibility(SCOANSI
);
1913 if (cfg
.no_remote_charset
) break;
1915 case 11: /* SCO acs on */
1916 compatibility(SCOANSI
);
1917 if (cfg
.no_remote_charset
) break;
1919 case 12: /* SCO acs on flipped */
1920 compatibility(SCOANSI
);
1921 if (cfg
.no_remote_charset
) break;
1923 case 22: /* disable bold */
1924 compatibility2(OTHER
, VT220
);
1925 curr_attr
&= ~ATTR_BOLD
;
1927 case 24: /* disable underline */
1928 compatibility2(OTHER
, VT220
);
1929 curr_attr
&= ~ATTR_UNDER
;
1931 case 25: /* disable blink */
1932 compatibility2(OTHER
, VT220
);
1933 curr_attr
&= ~ATTR_BLINK
;
1935 case 27: /* disable reverse video */
1936 compatibility2(OTHER
, VT220
);
1937 curr_attr
&= ~ATTR_REVERSE
;
1948 curr_attr
&= ~ATTR_FGMASK
;
1950 (esc_args
[i
] - 30) << ATTR_FGSHIFT
;
1952 case 39: /* default-foreground */
1953 curr_attr
&= ~ATTR_FGMASK
;
1954 curr_attr
|= ATTR_DEFFG
;
1965 curr_attr
&= ~ATTR_BGMASK
;
1967 (esc_args
[i
] - 40) << ATTR_BGSHIFT
;
1969 case 49: /* default-background */
1970 curr_attr
&= ~ATTR_BGMASK
;
1971 curr_attr
|= ATTR_DEFBG
;
1976 erase_char
= (' ' | ATTR_ASCII
|
1978 (ATTR_FGMASK
| ATTR_BGMASK
)));
1981 case 's': /* save cursor */
1984 case 'u': /* restore cursor */
1986 seen_disp_event
= TRUE
;
1988 case 't': /* set page size - ie window height */
1990 * VT340/VT420 sequence DECSLPP, DEC only allows values
1991 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1992 * illegal values (eg first arg 1..9) for window changing
1996 && (esc_args
[0] < 1 || esc_args
[0] >= 24)) {
1997 compatibility(VT340TEXT
);
1998 if (!cfg
.no_remote_resize
)
1999 request_resize(cols
, def(esc_args
[0], 24));
2001 } else if (esc_nargs
>= 1 &&
2004 compatibility(OTHER
);
2006 switch (esc_args
[0]) {
2016 if (esc_nargs
>= 3) {
2017 move_window(def(esc_args
[1], 0),
2018 def(esc_args
[2], 0));
2022 /* We should resize the window to a given
2023 * size in pixels here, but currently our
2024 * resizing code isn't healthy enough to
2028 set_zorder(TRUE
); /* move to top */
2031 set_zorder(FALSE
); /* move to bottom */
2037 if (esc_nargs
>= 3) {
2038 if (!cfg
.no_remote_resize
)
2039 request_resize(def(esc_args
[2], cfg
.width
),
2040 def(esc_args
[1], cfg
.height
));
2045 set_zoomed(esc_args
[1] ? TRUE
: FALSE
);
2048 ldisc_send(is_iconic() ?
"\033[1t" : "\033[2t",
2052 get_window_pos(&x
, &y
);
2053 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
2054 ldisc_send(buf
, len
, 0);
2057 get_window_pixels(&x
, &y
);
2058 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
2059 ldisc_send(buf
, len
, 0);
2062 len
= sprintf(buf
, "\033[8;%d;%dt",
2064 ldisc_send(buf
, len
, 0);
2068 * Hmmm. Strictly speaking we
2069 * should return `the size of the
2070 * screen in characters', but
2071 * that's not easy: (a) window
2072 * furniture being what it is it's
2073 * hard to compute, and (b) in
2074 * resize-font mode maximising the
2075 * window wouldn't change the
2076 * number of characters. *shrug*. I
2077 * think we'll ignore it for the
2078 * moment and see if anyone
2079 * complains, and then ask them
2080 * what they would like it to do.
2084 p
= get_window_title(TRUE
);
2086 ldisc_send("\033]L", 3, 0);
2087 ldisc_send(p
, len
, 0);
2088 ldisc_send("\033\\", 2, 0);
2091 p
= get_window_title(FALSE
);
2093 ldisc_send("\033]l", 3, 0);
2094 ldisc_send(p
, len
, 0);
2095 ldisc_send("\033\\", 2, 0);
2101 compatibility(SCOANSI
);
2102 scroll(marg_t
, marg_b
, def(esc_args
[0], 1), TRUE
);
2105 seen_disp_event
= TRUE
;
2108 compatibility(SCOANSI
);
2109 scroll(marg_t
, marg_b
, -def(esc_args
[0], 1), TRUE
);
2112 seen_disp_event
= TRUE
;
2114 case ANSI('|', '*'):
2115 /* VT420 sequence DECSNLS
2116 * Set number of lines on screen
2117 * VT420 uses VGA like hardware and can support any size in
2118 * reasonable range (24..49 AIUI) with no default specified.
2120 compatibility(VT420
);
2121 if (esc_nargs
== 1 && esc_args
[0] > 0) {
2122 if (!cfg
.no_remote_resize
)
2123 request_resize(cols
, def(esc_args
[0], cfg
.height
));
2127 case ANSI('|', '$'):
2128 /* VT340/VT420 sequence DECSCPP
2129 * Set number of columns per page
2130 * Docs imply range is only 80 or 132, but I'll allow any.
2132 compatibility(VT340TEXT
);
2133 if (esc_nargs
<= 1) {
2134 if (!cfg
.no_remote_resize
)
2135 request_resize(def(esc_args
[0], cfg
.width
), rows
);
2139 case 'X': /* write N spaces w/o moving cursor */
2140 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2141 compatibility(ANSIMIN
);
2143 int n
= def(esc_args
[0], 1);
2145 unsigned long *p
= cpos
;
2146 if (n
> cols
- curs
.x
)
2150 check_selection(curs
, cursplus
);
2153 seen_disp_event
= TRUE
;
2156 case 'x': /* report terminal characteristics */
2157 compatibility(VT100
);
2160 int i
= def(esc_args
[0], 0);
2161 if (i
== 0 || i
== 1) {
2162 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
2164 ldisc_send(buf
, 20, 0);
2168 case 'Z': /* BackTab for xterm */
2169 compatibility(OTHER
);
2171 int i
= def(esc_args
[0], 1);
2172 pos old_curs
= curs
;
2174 for(;i
>0 && curs
.x
>0; i
--) {
2177 } while (curs
.x
>0 && !tabs
[curs
.x
]);
2180 check_selection(old_curs
, curs
);
2183 case ANSI('L', '='):
2184 compatibility(OTHER
);
2185 use_bce
= (esc_args
[0] <= 0);
2186 erase_char
= ERASE_CHAR
;
2188 erase_char
= (' ' | ATTR_ASCII
|
2190 (ATTR_FGMASK
| ATTR_BGMASK
)));
2192 case ANSI('E', '='):
2193 compatibility(OTHER
);
2194 blink_is_real
= (esc_args
[0] >= 1);
2196 case ANSI('p', '"'):
2197 /* Allow the host to make this emulator a 'perfect' VT102.
2198 * This first appeared in the VT220, but we do need to get
2199 * back to PuTTY mode so I won't check it.
2201 * The arg in 40..42,50 are a PuTTY extension.
2202 * The 2nd arg, 8bit vs 7bit is not checked.
2204 * Setting VT102 mode should also change the Fkeys to
2205 * generate PF* codes as a real VT102 has no Fkeys.
2206 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
2209 * Note ESC c will NOT change this!
2212 switch (esc_args
[0]) {
2214 compatibility_level
&= ~TM_VTXXX
;
2215 compatibility_level
|= TM_VT102
;
2218 compatibility_level
&= ~TM_VTXXX
;
2219 compatibility_level
|= TM_VT220
;
2223 if (esc_args
[0] > 60 && esc_args
[0] < 70)
2224 compatibility_level
|= TM_VTXXX
;
2228 compatibility_level
&= TM_VTXXX
;
2231 compatibility_level
= TM_PUTTY
;
2234 compatibility_level
= TM_SCOANSI
;
2238 compatibility_level
= TM_PUTTY
;
2244 /* Change the response to CSI c */
2245 if (esc_args
[0] == 50) {
2248 strcpy(id_string
, "\033[?");
2249 for (i
= 1; i
< esc_nargs
; i
++) {
2251 strcat(id_string
, ";");
2252 sprintf(lbuf
, "%d", esc_args
[i
]);
2253 strcat(id_string
, lbuf
);
2255 strcat(id_string
, "c");
2258 /* Is this a good idea ?
2259 * Well we should do a soft reset at this point ...
2261 if (!has_compat(VT420
) && has_compat(VT100
)) {
2262 if (!cfg
.no_remote_resize
) {
2264 request_resize(132, 24);
2266 request_resize(80, 24);
2276 case 'P': /* Linux palette sequence */
2277 termstate
= SEEN_OSC_P
;
2280 case 'R': /* Linux palette reset */
2283 termstate
= TOPLEVEL
;
2285 case 'W': /* word-set */
2286 termstate
= SEEN_OSC_W
;
2299 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
2303 * Grotty hack to support xterm and DECterm title
2304 * sequences concurrently.
2306 if (esc_args
[0] == 2) {
2310 /* else fall through */
2312 termstate
= OSC_STRING
;
2318 * This OSC stuff is EVIL. It takes just one character to get into
2319 * sysline mode and it's not initially obvious how to get out.
2320 * So I've added CR and LF as string aborts.
2321 * This shouldn't effect compatibility as I believe embedded
2322 * control characters are supposed to be interpreted (maybe?)
2323 * and they don't display anything useful anyway.
2327 if (c
== '\n' || c
== '\r') {
2328 termstate
= TOPLEVEL
;
2329 } else if (c
== 0234 || c
== '\007') {
2331 * These characters terminate the string; ST and BEL
2332 * terminate the sequence and trigger instant
2333 * processing of it, whereas ESC goes back to SEEN_ESC
2334 * mode unless it is followed by \, in which case it is
2335 * synonymous with ST in the first place.
2338 termstate
= TOPLEVEL
;
2339 } else if (c
== '\033')
2340 termstate
= OSC_MAYBE_ST
;
2341 else if (osc_strlen
< OSC_STR_MAX
)
2342 osc_string
[osc_strlen
++] = c
;
2346 int max
= (osc_strlen
== 0 ?
21 : 16);
2348 if (c
>= '0' && c
<= '9')
2350 else if (c
>= 'A' && c
<= 'A' + max
- 10)
2352 else if (c
>= 'a' && c
<= 'a' + max
- 10)
2355 termstate
= TOPLEVEL
;
2358 osc_string
[osc_strlen
++] = val
;
2359 if (osc_strlen
>= 7) {
2360 palette_set(osc_string
[0],
2361 osc_string
[1] * 16 + osc_string
[2],
2362 osc_string
[3] * 16 + osc_string
[4],
2363 osc_string
[5] * 16 + osc_string
[6]);
2365 termstate
= TOPLEVEL
;
2381 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
2384 termstate
= OSC_STRING
;
2389 termstate
= TOPLEVEL
;
2390 seen_disp_event
= TRUE
;
2393 move(curs
.x
, curs
.y
- 1, 1);
2396 move(curs
.x
, curs
.y
+ 1, 1);
2399 move(curs
.x
+ 1, curs
.y
, 1);
2402 move(curs
.x
- 1, curs
.y
, 1);
2405 * From the VT100 Manual
2406 * NOTE: The special graphics characters in the VT100
2407 * are different from those in the VT52
2409 * From VT102 manual:
2410 * 137 _ Blank - Same
2411 * 140 ` Reserved - Humm.
2412 * 141 a Solid rectangle - Similar
2413 * 142 b 1/ - Top half of fraction for the
2414 * 143 c 3/ - subscript numbers below.
2417 * 146 f Degrees - Same
2418 * 147 g Plus or minus - Same
2420 * 151 i Ellipsis (dots)
2423 * 154 l Bar at scan 0
2424 * 155 m Bar at scan 1
2425 * 156 n Bar at scan 2
2426 * 157 o Bar at scan 3 - Similar
2427 * 160 p Bar at scan 4 - Similar
2428 * 161 q Bar at scan 5 - Similar
2429 * 162 r Bar at scan 6 - Same
2430 * 163 s Bar at scan 7 - Similar
2445 cset_attr
[cset
= 0] = ATTR_LINEDRW
;
2448 cset_attr
[cset
= 0] = ATTR_ASCII
;
2455 scroll(0, rows
- 1, -1, TRUE
);
2456 else if (curs
.y
> 0)
2462 erase_lots(FALSE
, FALSE
, TRUE
);
2466 erase_lots(TRUE
, FALSE
, TRUE
);
2470 /* XXX Print cursor line */
2473 /* XXX Start controller mode */
2476 /* XXX Stop controller mode */
2480 termstate
= VT52_Y1
;
2483 ldisc_send("\033/Z", 3, 0);
2486 app_keypad_keys
= TRUE
;
2489 app_keypad_keys
= FALSE
;
2492 /* XXX This should switch to VT100 mode not current or default
2493 * VT mode. But this will only have effect in a VT220+
2497 blink_is_real
= cfg
.blinktext
;
2501 /* XXX Enter auto print mode */
2504 /* XXX Exit auto print mode */
2507 /* XXX Print screen */
2513 /* compatibility(ATARI) */
2515 erase_lots(FALSE
, FALSE
, TRUE
);
2519 /* compatibility(ATARI) */
2520 if (curs
.y
<= marg_b
)
2521 scroll(curs
.y
, marg_b
, -1, FALSE
);
2524 /* compatibility(ATARI) */
2525 if (curs
.y
<= marg_b
)
2526 scroll(curs
.y
, marg_b
, 1, TRUE
);
2529 /* compatibility(ATARI) */
2530 termstate
= VT52_FG
;
2533 /* compatibility(ATARI) */
2534 termstate
= VT52_BG
;
2537 /* compatibility(ATARI) */
2538 erase_lots(FALSE
, TRUE
, FALSE
);
2542 /* compatibility(ATARI) */
2546 /* compatibility(ATARI) */
2549 /* case 'j': Save cursor position - broken on ST */
2550 /* case 'k': Restore cursor position */
2552 /* compatibility(ATARI) */
2553 erase_lots(TRUE
, TRUE
, TRUE
);
2559 /* compatibility(ATARI) */
2560 erase_lots(TRUE
, TRUE
, FALSE
);
2563 /* compatibility(ATARI) */
2564 curr_attr
|= ATTR_REVERSE
;
2567 /* compatibility(ATARI) */
2568 curr_attr
&= ~ATTR_REVERSE
;
2570 case 'v': /* wrap Autowrap on - Wyse style */
2571 /* compatibility(ATARI) */
2574 case 'w': /* Autowrap off */
2575 /* compatibility(ATARI) */
2580 /* compatibility(OTHER) */
2582 curr_attr
= ATTR_DEFAULT
;
2584 erase_char
= (' ' | ATTR_ASCII
|
2586 (ATTR_FGMASK
| ATTR_BGMASK
)));
2589 /* compatibility(VI50) */
2590 curr_attr
|= ATTR_UNDER
;
2593 /* compatibility(VI50) */
2594 curr_attr
&= ~ATTR_UNDER
;
2597 /* compatibility(VI50) */
2599 curr_attr
|= ATTR_BOLD
;
2602 /* compatibility(VI50) */
2604 curr_attr
&= ~ATTR_BOLD
;
2610 termstate
= VT52_Y2
;
2611 move(curs
.x
, c
- ' ', 0);
2614 termstate
= TOPLEVEL
;
2615 move(c
- ' ', curs
.y
, 0);
2620 termstate
= TOPLEVEL
;
2621 curr_attr
&= ~ATTR_FGMASK
;
2622 curr_attr
&= ~ATTR_BOLD
;
2623 curr_attr
|= (c
& 0x7) << ATTR_FGSHIFT
;
2624 if ((c
& 0x8) || vt52_bold
)
2625 curr_attr
|= ATTR_BOLD
;
2628 erase_char
= (' ' | ATTR_ASCII
|
2629 (curr_attr
& (ATTR_FGMASK
| ATTR_BGMASK
)));
2632 termstate
= TOPLEVEL
;
2633 curr_attr
&= ~ATTR_BGMASK
;
2634 curr_attr
&= ~ATTR_BLINK
;
2635 curr_attr
|= (c
& 0x7) << ATTR_BGSHIFT
;
2637 /* Note: bold background */
2639 curr_attr
|= ATTR_BLINK
;
2642 erase_char
= (' ' | ATTR_ASCII
|
2643 (curr_attr
& (ATTR_FGMASK
| ATTR_BGMASK
)));
2646 default: break; /* placate gcc warning about enum use */
2648 if (selstate
!= NO_SELECTION
) {
2649 pos cursplus
= curs
;
2651 check_selection(curs
, cursplus
);
2658 * Compare two lines to determine whether they are sufficiently
2659 * alike to scroll-optimise one to the other. Return the degree of
2662 static int linecmp(unsigned long *a
, unsigned long *b
)
2666 for (i
= n
= 0; i
< cols
; i
++)
2667 n
+= (*a
++ == *b
++);
2673 * Given a context, update the window. Out of paranoia, we don't
2674 * allow WM_PAINT responses to do scrolling optimisations.
2676 static void do_paint(Context ctx
, int may_optimise
)
2678 int i
, j
, our_curs_y
;
2679 unsigned long rv
, cursor
;
2682 long cursor_background
= ERASE_CHAR
;
2683 unsigned long ticks
;
2686 * Check the visual bell state.
2689 ticks
= GetTickCount();
2690 if (ticks
- vbell_startpoint
>= VBELL_TIMEOUT
)
2694 rv
= (!rvideo
^ !in_vbell ? ATTR_REVERSE
: 0);
2697 * screen array, disptop, scrtop,
2699 * cfg.blinkpc, blink_is_real, tblinker,
2700 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
2703 /* Has the cursor position or type changed ? */
2706 if (blinker
|| !cfg
.blink_cur
)
2707 cursor
= TATTR_ACTCURS
;
2711 cursor
= TATTR_PASCURS
;
2713 cursor
|= TATTR_RIGHTCURS
;
2716 our_curs_y
= curs
.y
- disptop
;
2718 if (dispcurs
&& (curstype
!= cursor
||
2720 disptext
+ our_curs_y
* (cols
+ 1) + curs
.x
)) {
2721 if (dispcurs
> disptext
&&
2722 (*dispcurs
& (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
2723 dispcurs
[-1] |= ATTR_INVALID
;
2724 if ( (dispcurs
[1] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
2725 dispcurs
[1] |= ATTR_INVALID
;
2726 *dispcurs
|= ATTR_INVALID
;
2731 /* The normal screen data */
2732 for (i
= 0; i
< rows
; i
++) {
2733 unsigned long *ldata
;
2735 int idx
, dirty_line
, dirty_run
, selected
;
2736 unsigned long attr
= 0;
2737 int updated_line
= 0;
2740 int last_run_dirty
= 0;
2742 scrpos
.y
= i
+ disptop
;
2743 ldata
= lineptr(scrpos
.y
);
2744 lattr
= (ldata
[cols
] & LATTR_MODE
);
2746 idx
= i
* (cols
+ 1);
2747 dirty_run
= dirty_line
= (ldata
[cols
] != disptext
[idx
+ cols
]);
2748 disptext
[idx
+ cols
] = ldata
[cols
];
2750 for (j
= 0; j
< cols
; j
++, idx
++) {
2751 unsigned long tattr
, tchar
;
2752 unsigned long *d
= ldata
+ j
;
2756 tchar
= (*d
& (CHAR_MASK
| CSET_MASK
));
2757 tattr
= (*d
& (ATTR_MASK
^ CSET_MASK
));
2758 switch (tchar
& CSET_MASK
) {
2760 tchar
= unitab_line
[tchar
& 0xFF];
2763 tchar
= unitab_xterm
[tchar
& 0xFF];
2766 tchar
= unitab_scoacs
[tchar
&0xFF];
2769 tattr
|= (tchar
& CSET_MASK
);
2771 if ((d
[1] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
2774 /* Video reversing things */
2775 if (seltype
== LEXICOGRAPHIC
)
2776 selected
= posle(selstart
, scrpos
) && poslt(scrpos
, selend
);
2778 selected
= posPle(selstart
, scrpos
) && posPlt(scrpos
, selend
);
2780 ^ (selected ? ATTR_REVERSE
: 0));
2782 /* 'Real' blinking ? */
2783 if (blink_is_real
&& (tattr
& ATTR_BLINK
)) {
2784 if (has_focus
&& tblinker
) {
2786 tattr
&= ~CSET_MASK
;
2789 tattr
&= ~ATTR_BLINK
;
2793 * Check the font we'll _probably_ be using to see if
2794 * the character is wide when we don't want it to be.
2796 if ((tchar
| tattr
) != (disptext
[idx
]& ~ATTR_NARROW
)) {
2797 if ((tattr
& ATTR_WIDE
) == 0 &&
2798 CharWidth(ctx
, (tchar
| tattr
) & 0xFFFF) == 2)
2799 tattr
|= ATTR_NARROW
;
2800 } else if (disptext
[idx
]&ATTR_NARROW
)
2801 tattr
|= ATTR_NARROW
;
2803 /* Cursor here ? Save the 'background' */
2804 if (i
== our_curs_y
&& j
== curs
.x
) {
2805 cursor_background
= tattr
| tchar
;
2806 dispcurs
= disptext
+ idx
;
2809 if ((disptext
[idx
] ^ tattr
) & ATTR_WIDE
)
2812 break_run
= (tattr
!= attr
|| j
- start
>= sizeof(ch
));
2814 /* Special hack for VT100 Linedraw glyphs */
2815 if ((attr
& CSET_MASK
) == 0x2300 && tchar
>= 0xBA
2816 && tchar
<= 0xBD) break_run
= TRUE
;
2818 if (!dbcs_screenfont
&& !dirty_line
) {
2819 if ((tchar
| tattr
) == disptext
[idx
])
2821 else if (!dirty_run
&& ccount
== 1)
2826 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
2827 do_text(ctx
, start
, i
, ch
, ccount
, attr
, lattr
);
2833 if (dbcs_screenfont
)
2834 last_run_dirty
= dirty_run
;
2835 dirty_run
= dirty_line
;
2838 if ((tchar
| tattr
) != disptext
[idx
])
2840 ch
[ccount
++] = (char) tchar
;
2841 disptext
[idx
] = tchar
| tattr
;
2843 /* If it's a wide char step along to the next one. */
2844 if (tattr
& ATTR_WIDE
) {
2848 /* Cursor is here ? Ouch! */
2849 if (i
== our_curs_y
&& j
== curs
.x
) {
2850 cursor_background
= *d
;
2851 dispcurs
= disptext
+ idx
;
2853 if (disptext
[idx
] != *d
)
2859 if (dirty_run
&& ccount
> 0) {
2860 do_text(ctx
, start
, i
, ch
, ccount
, attr
, lattr
);
2864 /* Cursor on this line ? (and changed) */
2865 if (i
== our_curs_y
&& (curstype
!= cursor
|| updated_line
)) {
2866 ch
[0] = (char) (cursor_background
& CHAR_MASK
);
2867 attr
= (cursor_background
& ATTR_MASK
) | cursor
;
2868 do_cursor(ctx
, curs
.x
, i
, ch
, 1, attr
, lattr
);
2875 * Flick the switch that says if blinking things should be shown or hidden.
2878 void term_blink(int flg
)
2880 static long last_blink
= 0;
2881 static long last_tblink
= 0;
2882 long now
, blink_diff
;
2884 now
= GetTickCount();
2885 blink_diff
= now
- last_tblink
;
2887 /* Make sure the text blinks no more than 2Hz */
2888 if (blink_diff
< 0 || blink_diff
> 450) {
2890 tblinker
= !tblinker
;
2899 blink_diff
= now
- last_blink
;
2901 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
2902 if (blink_diff
>= 0 && blink_diff
< (long) GetCaretBlinkTime())
2910 * Invalidate the whole screen so it will be repainted in full.
2912 void term_invalidate(void)
2916 for (i
= 0; i
< rows
* (cols
+ 1); i
++)
2917 disptext
[i
] = ATTR_INVALID
;
2921 * Paint the window in response to a WM_PAINT message.
2923 void term_paint(Context ctx
, int left
, int top
, int right
, int bottom
)
2926 if (left
< 0) left
= 0;
2927 if (top
< 0) top
= 0;
2928 if (right
>= cols
) right
= cols
-1;
2929 if (bottom
>= rows
) bottom
= rows
-1;
2931 for (i
= top
; i
<= bottom
&& i
< rows
; i
++) {
2932 if ((disptext
[i
* (cols
+ 1) + cols
] & LATTR_MODE
) == LATTR_NORM
)
2933 for (j
= left
; j
<= right
&& j
< cols
; j
++)
2934 disptext
[i
* (cols
+ 1) + j
] = ATTR_INVALID
;
2936 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< cols
; j
++)
2937 disptext
[i
* (cols
+ 1) + j
] = ATTR_INVALID
;
2940 /* This should happen soon enough, also for some reason it sometimes
2941 * fails to actually do anything when re-sizing ... painting the wrong
2945 do_paint (ctx
, FALSE
);
2949 * Attempt to scroll the scrollback. The second parameter gives the
2950 * position we want to scroll to; the first is +1 to denote that
2951 * this position is relative to the beginning of the scrollback, -1
2952 * to denote it is relative to the end, and 0 to denote that it is
2953 * relative to the current position.
2955 void term_scroll(int rel
, int where
)
2957 int sbtop
= -count234(scrollback
);
2959 disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: disptop
) + where
;
2960 if (disptop
< sbtop
)
2968 static void clipme(pos top
, pos bottom
, int rect
)
2971 wchar_t *wbptr
; /* where next char goes within workbuf */
2973 int wblen
= 0; /* workbuf len */
2974 int buflen
; /* amount of memory allocated to workbuf */
2976 buflen
= 5120; /* Default size */
2977 workbuf
= smalloc(buflen
* sizeof(wchar_t));
2978 wbptr
= workbuf
; /* start filling here */
2979 old_top_x
= top
.x
; /* needed for rect==1 */
2981 while (poslt(top
, bottom
)) {
2983 unsigned long *ldata
= lineptr(top
.y
);
2987 * nlpos will point at the maximum position on this line we
2988 * should copy up to. So we start it at the end of the
2995 * ... move it backwards if there's unused space at the end
2996 * of the line (and also set `nl' if this is the case,
2997 * because in normal selection mode this means we need a
2998 * newline at the end)...
3000 if (!(ldata
[cols
] & LATTR_WRAPPED
)) {
3001 while (((ldata
[nlpos
.x
- 1] & 0xFF) == 0x20 ||
3002 (DIRECT_CHAR(ldata
[nlpos
.x
- 1]) &&
3003 (ldata
[nlpos
.x
- 1] & CHAR_MASK
) == 0x20))
3004 && poslt(top
, nlpos
))
3006 if (poslt(nlpos
, bottom
))
3011 * ... and then clip it to the terminal x coordinate if
3012 * we're doing rectangular selection. (In this case we
3013 * still did the above, so that copying e.g. the right-hand
3014 * column from a table doesn't fill with spaces on the
3018 if (nlpos
.x
> bottom
.x
)
3020 nl
= (top
.y
< bottom
.y
);
3023 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
3026 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
3028 wchar_t cbuf
[16], *p
;
3029 int uc
= (ldata
[top
.x
] & 0xFFFF);
3032 if (uc
== UCSWIDE
) {
3037 switch (uc
& CSET_MASK
) {
3040 uc
= unitab_xterm
[uc
& 0xFF];
3044 uc
= unitab_line
[uc
& 0xFF];
3047 uc
= unitab_scoacs
[uc
&0xFF];
3050 switch (uc
& CSET_MASK
) {
3052 uc
= unitab_font
[uc
& 0xFF];
3055 uc
= unitab_oemcp
[uc
& 0xFF];
3059 set
= (uc
& CSET_MASK
);
3060 c
= (uc
& CHAR_MASK
);
3064 if (DIRECT_FONT(uc
)) {
3065 if (c
>= ' ' && c
!= 0x7F) {
3066 unsigned char buf
[4];
3069 if (IsDBCSLeadByteEx(font_codepage
, (BYTE
) c
)) {
3071 buf
[1] = (unsigned char) ldata
[top
.x
+ 1];
3072 rv
= MultiByteToWideChar(font_codepage
,
3073 0, buf
, 2, wbuf
, 4);
3077 rv
= MultiByteToWideChar(font_codepage
,
3078 0, buf
, 1, wbuf
, 4);
3082 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
3089 for (p
= cbuf
; *p
; p
++) {
3090 /* Enough overhead for trailing NL and nul */
3091 if (wblen
>= buflen
- 16) {
3094 sizeof(wchar_t) * (buflen
+= 100));
3095 wbptr
= workbuf
+ wblen
;
3104 for (i
= 0; i
< sel_nl_sz
; i
++) {
3106 *wbptr
++ = sel_nl
[i
];
3110 top
.x
= rect ? old_top_x
: 0;
3114 write_clip(workbuf
, wblen
, FALSE
); /* transfer to clipboard */
3115 if (buflen
> 0) /* indicates we allocated this buffer */
3119 void term_copyall(void)
3122 top
.y
= -count234(scrollback
);
3124 clipme(top
, curs
, 0);
3128 * The wordness array is mainly for deciding the disposition of the US-ASCII
3131 static int wordtype(int uc
)
3134 int start
, end
, ctype
;
3135 } *wptr
, ucs_words
[] = {
3141 0x037e, 0x037e, 1}, /* Greek question mark */
3143 0x0387, 0x0387, 1}, /* Greek ano teleia */
3145 0x055a, 0x055f, 1}, /* Armenian punctuation */
3147 0x0589, 0x0589, 1}, /* Armenian full stop */
3149 0x0700, 0x070d, 1}, /* Syriac punctuation */
3151 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3153 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3155 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3157 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3159 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3161 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3163 0x2000, 0x200a, 0}, /* Various spaces */
3165 0x2070, 0x207f, 2}, /* superscript */
3167 0x2080, 0x208f, 2}, /* subscript */
3169 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3171 0x3000, 0x3000, 0}, /* ideographic space */
3173 0x3001, 0x3020, 1}, /* ideographic punctuation */
3175 0x303f, 0x309f, 3}, /* Hiragana */
3177 0x30a0, 0x30ff, 3}, /* Katakana */
3179 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3181 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3183 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3185 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3187 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3189 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3191 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3193 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3195 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3200 uc
&= (CSET_MASK
| CHAR_MASK
);
3202 switch (uc
& CSET_MASK
) {
3204 uc
= unitab_xterm
[uc
& 0xFF];
3207 uc
= unitab_line
[uc
& 0xFF];
3210 uc
= unitab_scoacs
[uc
&0xFF];
3213 switch (uc
& CSET_MASK
) {
3215 uc
= unitab_font
[uc
& 0xFF];
3218 uc
= unitab_oemcp
[uc
& 0xFF];
3222 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3223 * fail as there's such a thing as a double width space. :-(
3225 if (dbcs_screenfont
&& font_codepage
== line_codepage
)
3229 return wordness
[uc
];
3231 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
3232 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
3240 * Spread the selection outwards according to the selection mode.
3242 static pos
sel_spread_half(pos p
, int dir
)
3244 unsigned long *ldata
;
3246 int topy
= -count234(scrollback
);
3248 ldata
= lineptr(p
.y
);
3253 * In this mode, every character is a separate unit, except
3254 * for runs of spaces at the end of a non-wrapping line.
3256 if (!(ldata
[cols
] & LATTR_WRAPPED
)) {
3257 unsigned long *q
= ldata
+ cols
;
3258 while (q
> ldata
&& (q
[-1] & CHAR_MASK
) == 0x20)
3260 if (q
== ldata
+ cols
)
3262 if (p
.x
>= q
- ldata
)
3263 p
.x
= (dir
== -1 ? q
- ldata
: cols
- 1);
3268 * In this mode, the units are maximal runs of characters
3269 * whose `wordness' has the same value.
3271 wvalue
= wordtype(ldata
[p
.x
]);
3275 if (wordtype(ldata
[p
.x
+ 1]) == wvalue
)
3280 if (ldata
[cols
] & LATTR_WRAPPED
) {
3281 unsigned long *ldata2
;
3282 ldata2
= lineptr(p
.y
+1);
3283 if (wordtype(ldata2
[0]) == wvalue
) {
3296 if (wordtype(ldata
[p
.x
- 1]) == wvalue
)
3301 unsigned long *ldata2
;
3304 ldata2
= lineptr(p
.y
-1);
3305 if ((ldata2
[cols
] & LATTR_WRAPPED
) &&
3306 wordtype(ldata2
[cols
-1]) == wvalue
) {
3318 * In this mode, every line is a unit.
3320 p
.x
= (dir
== -1 ?
0 : cols
- 1);
3326 static void sel_spread(void)
3328 if (seltype
== LEXICOGRAPHIC
) {
3329 selstart
= sel_spread_half(selstart
, -1);
3331 selend
= sel_spread_half(selend
, +1);
3336 void term_do_paste(void)
3341 get_clip(&data
, &len
);
3346 sfree(paste_buffer
);
3347 paste_pos
= paste_hold
= paste_len
= 0;
3348 paste_buffer
= smalloc(len
* sizeof(wchar_t));
3351 while (p
< data
+ len
) {
3352 while (p
< data
+ len
&&
3353 !(p
<= data
+ len
- sel_nl_sz
&&
3354 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
3359 for (i
= 0; i
< p
- q
; i
++) {
3360 paste_buffer
[paste_len
++] = q
[i
];
3364 if (p
<= data
+ len
- sel_nl_sz
&&
3365 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
3366 paste_buffer
[paste_len
++] = '\r';
3372 /* Assume a small paste will be OK in one go. */
3373 if (paste_len
< 256) {
3374 luni_send(paste_buffer
, paste_len
, 0);
3376 sfree(paste_buffer
);
3378 paste_pos
= paste_hold
= paste_len
= 0;
3381 get_clip(NULL
, NULL
);
3384 void term_mouse(Mouse_Button b
, Mouse_Action a
, int x
, int y
,
3385 int shift
, int ctrl
, int alt
)
3388 unsigned long *ldata
;
3389 int raw_mouse
= xterm_mouse
&& !(cfg
.mouse_override
&& shift
);
3390 int default_seltype
;
3394 if (a
== MA_DRAG
&& !raw_mouse
)
3399 if (a
== MA_DRAG
&& !raw_mouse
)
3412 selpoint
.y
= y
+ disptop
;
3414 ldata
= lineptr(selpoint
.y
);
3415 if ((ldata
[cols
] & LATTR_MODE
) != LATTR_NORM
)
3419 int encstate
= 0, r
, c
;
3421 static int is_down
= 0;
3425 encstate
= 0x20; /* left button down */
3436 case MBT_WHEEL_DOWN
:
3439 default: break; /* placate gcc warning about enum use */
3443 if (xterm_mouse
== 1)
3456 default: break; /* placate gcc warning about enum use */
3465 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
3466 ldisc_send(abuf
, 6, 0);
3470 b
= translate_button(b
);
3473 * Set the selection type (rectangular or normal) at the start
3474 * of a selection attempt, from the state of Alt.
3476 if (!alt
^ !cfg
.rect_select
)
3477 default_seltype
= RECTANGULAR
;
3479 default_seltype
= LEXICOGRAPHIC
;
3481 if (selstate
== NO_SELECTION
) {
3482 seltype
= default_seltype
;
3485 if (b
== MBT_SELECT
&& a
== MA_CLICK
) {
3487 selstate
= ABOUT_TO
;
3488 seltype
= default_seltype
;
3489 selanchor
= selpoint
;
3491 } else if (b
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
3493 selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
3494 selstate
= DRAGGING
;
3495 selstart
= selanchor
= selpoint
;
3499 } else if ((b
== MBT_SELECT
&& a
== MA_DRAG
) ||
3500 (b
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
3501 if (selstate
== ABOUT_TO
&& poseq(selanchor
, selpoint
))
3503 if (b
== MBT_EXTEND
&& a
!= MA_DRAG
&& selstate
== SELECTED
) {
3504 if (seltype
== LEXICOGRAPHIC
) {
3506 * For normal selection, we extend by moving
3507 * whichever end of the current selection is closer
3510 if (posdiff(selpoint
, selstart
) <
3511 posdiff(selend
, selstart
) / 2) {
3515 selanchor
= selstart
;
3519 * For rectangular selection, we have a choice of
3520 * _four_ places to put selanchor and selpoint: the
3521 * four corners of the selection.
3523 if (2*selpoint
.x
< selstart
.x
+ selend
.x
)
3524 selanchor
.x
= selend
.x
-1;
3526 selanchor
.x
= selstart
.x
;
3528 if (2*selpoint
.y
< selstart
.y
+ selend
.y
)
3529 selanchor
.y
= selend
.y
;
3531 selanchor
.y
= selstart
.y
;
3533 selstate
= DRAGGING
;
3535 if (selstate
!= ABOUT_TO
&& selstate
!= DRAGGING
)
3536 selanchor
= selpoint
;
3537 selstate
= DRAGGING
;
3538 if (seltype
== LEXICOGRAPHIC
) {
3540 * For normal selection, we set (selstart,selend) to
3541 * (selpoint,selanchor) in some order.
3543 if (poslt(selpoint
, selanchor
)) {
3544 selstart
= selpoint
;
3548 selstart
= selanchor
;
3554 * For rectangular selection, we may need to
3555 * interchange x and y coordinates (if the user has
3556 * dragged in the -x and +y directions, or vice versa).
3558 selstart
.x
= min(selanchor
.x
, selpoint
.x
);
3559 selend
.x
= 1+max(selanchor
.x
, selpoint
.x
);
3560 selstart
.y
= min(selanchor
.y
, selpoint
.y
);
3561 selend
.y
= max(selanchor
.y
, selpoint
.y
);
3564 } else if ((b
== MBT_SELECT
|| b
== MBT_EXTEND
) && a
== MA_RELEASE
) {
3565 if (selstate
== DRAGGING
) {
3567 * We've completed a selection. We now transfer the
3568 * data to the clipboard.
3570 clipme(selstart
, selend
, (seltype
== RECTANGULAR
));
3571 selstate
= SELECTED
;
3573 selstate
= NO_SELECTION
;
3574 } else if (b
== MBT_PASTE
3575 && (a
== MA_CLICK
|| a
== MA_2CLK
|| a
== MA_3CLK
)) {
3586 sfree(paste_buffer
);
3593 static long last_paste
= 0;
3594 long now
, paste_diff
;
3599 /* Don't wait forever to paste */
3601 now
= GetTickCount();
3602 paste_diff
= now
- last_paste
;
3603 if (paste_diff
>= 0 && paste_diff
< 450)
3608 while (paste_pos
< paste_len
) {
3610 while (n
+ paste_pos
< paste_len
) {
3611 if (paste_buffer
[paste_pos
+ n
++] == '\r')
3614 luni_send(paste_buffer
+ paste_pos
, n
, 0);
3617 if (paste_pos
< paste_len
) {
3622 sfree(paste_buffer
);
3627 static void deselect(void)
3629 selstate
= NO_SELECTION
;
3630 selstart
.x
= selstart
.y
= selend
.x
= selend
.y
= 0;
3633 void term_deselect(void)
3639 int term_ldisc(int option
)
3641 if (option
== LD_ECHO
)
3642 return term_echoing
;
3643 if (option
== LD_EDIT
)
3644 return term_editing
;
3649 * from_backend(), to get data from the backend for the terminal.
3651 int from_backend(int is_stderr
, char *data
, int len
)
3655 bufchain_add(&inbuf
, data
, len
);
3658 * term_out() always completely empties inbuf. Therefore,
3659 * there's no reason at all to return anything other than zero
3660 * from this function, because there _can't_ be a question of
3661 * the remote side needing to wait until term_out() has cleared
3664 * This is a slightly suboptimal way to deal with SSH2 - in
3665 * principle, the window mechanism would allow us to continue
3666 * to accept data on forwarded ports and X connections even
3667 * while the terminal processing was going slowly - but we
3668 * can't do the 100% right thing without moving the terminal
3669 * processing into a separate thread, and that might hurt
3670 * portability. So we manage stdout buffering the old SSH1 way:
3671 * if the terminal processing goes slowly, the whole SSH
3672 * connection stops accepting data until it's ready.
3674 * In practice, I can't imagine this causing serious trouble.