c3a4e2cba2e1d75b2fc2d300632002257622bda8
12 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
13 #define CL_VT100 0x0002 /* VT100 */
14 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
15 #define CL_VT102 0x0008 /* VT102 */
16 #define CL_VT220 0x0010 /* VT220 */
17 #define CL_VT320 0x0020 /* VT320 */
18 #define CL_VT420 0x0040 /* VT420 */
19 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
20 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
21 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
22 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
23 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
25 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
26 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
27 #define TM_VT102 (TM_VT100AVO|CL_VT102)
28 #define TM_VT220 (TM_VT102|CL_VT220)
29 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
30 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
32 #define TM_PUTTY (0xFFFF)
34 #define compatibility(x) \
35 if ( ((CL_##x)&compatibility_level) == 0 ) { \
39 #define compatibility2(x,y) \
40 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
45 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
47 static int compatibility_level
= TM_PUTTY
;
49 static tree234
*scrollback
; /* lines scrolled off top of screen */
50 static tree234
*screen
; /* lines on primary screen */
51 static tree234
*alt_screen
; /* lines on alternate screen */
52 static int disptop
; /* distance scrolled back (0 or -ve) */
54 static unsigned long *cpos
; /* cursor position (convenience) */
56 static unsigned long *disptext
; /* buffer of text on real screen */
57 static unsigned long *wanttext
; /* buffer of text we want on screen */
59 #define VBELL_TIMEOUT 100 /* millisecond len of visual bell */
62 struct beeptime
*next
;
65 static struct beeptime
*beephead
, *beeptail
;
70 static unsigned char *selspace
; /* buffer for building selections in */
72 #define TSIZE (sizeof(unsigned long))
73 #define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
75 static unsigned long curr_attr
, save_attr
;
76 static unsigned long erase_char
= ERASE_CHAR
;
81 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
82 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
83 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
84 #define posdiff(p1,p2) ( ((p2).y - (p1).y) * (cols+1) + (p2).x - (p1).x )
85 #define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
86 #define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
88 static pos curs
; /* cursor */
89 static pos savecurs
; /* saved cursor position */
90 static int marg_t
, marg_b
; /* scroll margins */
91 static int dec_om
; /* DEC origin mode flag */
92 static int wrap
, wrapnext
; /* wrap flags */
93 static int insert
; /* insert-mode flag */
94 static int cset
; /* 0 or 1: which char set */
95 static int save_cset
, save_csattr
; /* saved with cursor position */
96 static int rvideo
; /* global reverse video flag */
97 static int rvbell_timeout
; /* for ESC[?5hESC[?5l vbell */
98 static int cursor_on
; /* cursor enabled flag */
99 static int reset_132
; /* Flag ESC c resets to 80 cols */
100 static int use_bce
; /* Use Background coloured erase */
101 static int blinker
; /* When blinking is the cursor on ? */
102 static int tblinker
; /* When the blinking text is on */
103 static int blink_is_real
; /* Actually blink blinking text */
104 static int term_echoing
; /* Does terminal want local echo? */
105 static int term_editing
; /* Does terminal want local edit? */
107 static int xterm_mouse
; /* send mouse messages to app */
109 static unsigned long cset_attr
[2];
112 * Saved settings on the alternate screen.
114 static int alt_x
, alt_y
, alt_om
, alt_wrap
, alt_wnext
, alt_ins
, alt_cset
;
115 static int alt_t
, alt_b
;
116 static int alt_which
;
118 #define ARGS_MAX 32 /* max # of esc sequence arguments */
119 #define ARG_DEFAULT 0 /* if an arg isn't specified */
120 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
121 static int esc_args
[ARGS_MAX
];
122 static int esc_nargs
;
123 static int esc_query
;
124 #define ANSI(x,y) ((x)+((y)<<8))
125 #define ANSI_QUE(x) ANSI(x,TRUE)
127 #define OSC_STR_MAX 2048
128 static int osc_strlen
;
129 static char osc_string
[OSC_STR_MAX
+1];
132 static char id_string
[1024] = "\033[?6c";
134 static unsigned char *tabs
;
148 OSC_STRING
, OSC_MAYBE_ST
,
156 NO_SELECTION
, ABOUT_TO
, DRAGGING
, SELECTED
159 SM_CHAR
, SM_WORD
, SM_LINE
161 static pos selstart
, selend
, selanchor
;
163 static short wordness
[256] = {
164 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 01 */
165 0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2, 2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1, /* 23 */
166 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2, /* 45 */
167 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */
168 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 89 */
169 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* AB */
170 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* CD */
171 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* EF */
174 static unsigned char sel_nl
[] = SEL_NL
;
175 static char * paste_buffer
= 0;
176 static int paste_len
, paste_pos
, paste_hold
;
179 * Internal prototypes.
181 static void do_paint (Context
, int);
182 static void erase_lots (int, int, int);
183 static void swap_screen (int);
184 static void update_sbar (void);
185 static void deselect (void);
186 /* log session to file stuff ... */
187 static FILE *lgfp
= NULL
;
188 static void logtraffic(unsigned char c
, int logmode
);
191 * Retrieve a line of the screen or of the scrollback, according to
192 * whether the y coordinate is non-negative or negative
195 unsigned long *lineptr(int y
, int lineno
) {
196 unsigned long *line
, lineattrs
;
198 int i
, treeindex
, oldlen
;
204 whichtree
= scrollback
;
205 treeindex
= y
+ count234(scrollback
);
207 line
= index234(whichtree
, treeindex
);
209 /* We assume that we don't screw up and retrieve something out of range. */
210 assert(line
!= NULL
);
212 if (line
[0] != cols
) {
214 * This line is the wrong length, which probably means it
215 * hasn't been accessed since a resize. Resize it now.
218 lineattrs
= line
[oldlen
+1];
219 delpos234(whichtree
, treeindex
);
220 line
= srealloc(line
, TSIZE
* (2+cols
));
222 for (i
= oldlen
; i
< cols
; i
++)
223 line
[i
+1] = ERASE_CHAR
;
224 line
[cols
+1] = lineattrs
& LATTR_MODE
;
225 addpos234(whichtree
, line
, treeindex
);
230 #define lineptr(x) lineptr(x,__LINE__)
232 * Set up power-on settings for the terminal.
234 static void power_on(void) {
235 curs
.x
= curs
.y
= alt_x
= alt_y
= savecurs
.x
= savecurs
.y
= 0;
238 alt_b
= marg_b
= rows
- 1;
243 for (i
= 0; i
< cols
; i
++)
244 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
246 alt_om
= dec_om
= cfg
.dec_om
;
247 alt_wnext
= wrapnext
= alt_ins
= insert
= FALSE
;
248 alt_wrap
= wrap
= cfg
.wrap_mode
;
250 cset_attr
[0] = cset_attr
[1] = ATTR_ASCII
;
254 save_attr
= curr_attr
= ATTR_DEFAULT
;
255 term_editing
= term_echoing
= FALSE
;
256 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
257 app_cursor_keys
= cfg
.app_cursor
;
258 app_keypad_keys
= cfg
.app_keypad
;
260 blink_is_real
= cfg
.blinktext
;
261 erase_char
= ERASE_CHAR
;
265 for (i
= 0; i
< 256; i
++)
266 wordness
[i
] = cfg
.wordness
[i
];
270 erase_lots (FALSE
, TRUE
, TRUE
);
272 erase_lots (FALSE
, TRUE
, TRUE
);
277 * Force a screen update.
279 void term_update(void) {
283 if ( (seen_key_event
&& (cfg
.scroll_on_key
)) ||
284 (seen_disp_event
&& (cfg
.scroll_on_disp
)) ) {
285 disptop
= 0; /* return to main screen */
286 seen_disp_event
= seen_key_event
= 0;
289 do_paint (ctx
, TRUE
);
290 sys_cursor(curs
.x
, curs
.y
- disptop
);
296 * Same as power_on(), but an external function.
298 void term_pwron(void) {
307 * Clear the scrollback.
309 void term_clrsb(void) {
312 while ((line
= delpos234(scrollback
, 0)) != NULL
) {
319 * Initialise the terminal.
321 void term_init(void) {
322 screen
= alt_screen
= scrollback
= NULL
;
324 disptext
= wanttext
= NULL
;
330 beephead
= beeptail
= NULL
;
333 beep_overloaded
= FALSE
;
337 * Set up the terminal for a given size.
339 void term_size(int newrows
, int newcols
, int newsavelines
) {
340 tree234
*newsb
, *newscreen
, *newalt
;
341 unsigned long *newdisp
, *newwant
, *oldline
, *line
;
344 int save_alt_which
= alt_which
;
346 if (newrows
== rows
&& newcols
== cols
&& newsavelines
== savelines
)
347 return; /* nothing to do */
353 alt_b
= marg_b
= newrows
- 1;
356 scrollback
= newtree234(NULL
);
357 screen
= newtree234(NULL
);
362 * Resize the screen and scrollback. We only need to shift
363 * lines around within our data structures, because lineptr()
364 * will take care of resizing each individual line if
367 * - If the new screen and the old screen differ in length, we
368 * must shunt some lines in from the scrollback or out to
371 * - If doing that fails to provide us with enough material to
372 * fill the new screen (i.e. the number of rows needed in
373 * the new screen exceeds the total number in the previous
374 * screen+scrollback), we must invent some blank lines to
377 * - Then, if the new scrollback length is less than the
378 * amount of scrollback we actually have, we must throw some
381 sblen
= count234(scrollback
);
382 /* Do this loop to expand the screen if newrows > rows */
383 for (i
= rows
; i
< newrows
; i
++) {
385 line
= delpos234(scrollback
, --sblen
);
387 line
= smalloc(TSIZE
* (newcols
+2));
389 for (j
= 0; j
<= newcols
; j
++)
390 line
[j
+1] = ERASE_CHAR
;
392 addpos234(screen
, line
, 0);
394 /* Do this loop to shrink the screen if newrows < rows */
395 for (i
= newrows
; i
< rows
; i
++) {
396 line
= delpos234(screen
, 0);
397 addpos234(scrollback
, line
, sblen
++);
399 assert(count234(screen
) == newrows
);
400 while (sblen
> newsavelines
) {
401 line
= delpos234(scrollback
, 0);
405 assert(count234(scrollback
) <= newsavelines
);
408 newdisp
= smalloc (newrows
*(newcols
+1)*TSIZE
);
409 for (i
=0; i
<newrows
*(newcols
+1); i
++)
410 newdisp
[i
] = ATTR_INVALID
;
414 newwant
= smalloc (newrows
*(newcols
+1)*TSIZE
);
415 for (i
=0; i
<newrows
*(newcols
+1); i
++)
416 newwant
[i
] = ATTR_INVALID
;
420 newalt
= newtree234(NULL
);
421 for (i
=0; i
<newrows
; i
++) {
422 line
= smalloc(TSIZE
* (newcols
+2));
424 for (j
= 0; j
<= newcols
; j
++)
425 line
[j
+1] = erase_char
;
426 addpos234(newalt
, line
, i
);
429 while (NULL
!= (line
= delpos234(alt_screen
, 0)))
431 freetree234(alt_screen
);
436 selspace
= smalloc ( (newrows
+newsavelines
) * (newcols
+sizeof(sel_nl
)) );
438 tabs
= srealloc (tabs
, newcols
*sizeof(*tabs
));
441 for (i
= (cols
> 0 ? cols
: 0); i
< newcols
; i
++)
442 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
446 curs
.y
+= newrows
- rows
;
449 if (curs
.y
>= newrows
)
451 if (curs
.x
>= newcols
)
454 wrapnext
= alt_wnext
= FALSE
;
458 savelines
= newsavelines
;
461 swap_screen(save_alt_which
);
470 static void swap_screen (int which
) {
474 if (which
== alt_which
)
479 ttr
= alt_screen
; alt_screen
= screen
; screen
= ttr
;
480 t
= curs
.x
; curs
.x
= alt_x
; alt_x
= t
;
481 t
= curs
.y
; curs
.y
= alt_y
; alt_y
= t
;
482 t
= marg_t
; marg_t
= alt_t
; alt_t
= t
;
483 t
= marg_b
; marg_b
= alt_b
; alt_b
= t
;
484 t
= dec_om
; dec_om
= alt_om
; alt_om
= t
;
485 t
= wrap
; wrap
= alt_wrap
; alt_wrap
= t
;
486 t
= wrapnext
; wrapnext
= alt_wnext
; alt_wnext
= t
;
487 t
= insert
; insert
= alt_ins
; alt_ins
= t
;
488 t
= cset
; cset
= alt_cset
; alt_cset
= t
;
494 * Update the scroll bar.
496 static void update_sbar(void) {
499 nscroll
= count234(scrollback
);
501 set_sbar (nscroll
+ rows
, nscroll
+ disptop
, rows
);
505 * Check whether the region bounded by the two pointers intersects
506 * the scroll region, and de-select the on-screen selection if so.
508 static void check_selection (pos from
, pos to
) {
509 if (poslt(from
, selend
) && poslt(selstart
, to
))
514 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
515 * for backward.) `sb' is TRUE if the scrolling is permitted to
516 * affect the scrollback buffer.
518 * NB this function invalidates all pointers into lines of the
519 * screen data structures. In particular, you MUST call fix_cpos
520 * after calling scroll() and before doing anything else that
521 * uses the cpos shortcut pointer.
523 static void scroll (int topline
, int botline
, int lines
, int sb
) {
524 unsigned long *line
, *line2
;
527 if (topline
!= 0 || alt_which
!= 0)
532 line
= delpos234(screen
, botline
);
533 for (i
= 0; i
< cols
; i
++)
534 line
[i
+1] = erase_char
;
536 addpos234(screen
, line
, topline
);
538 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
540 if (selstart
.y
> botline
) {
541 selstart
.y
= botline
;
545 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
547 if (selend
.y
> botline
) {
557 line
= delpos234(screen
, topline
);
558 if (sb
&& savelines
> 0) {
559 int sblen
= count234(scrollback
);
561 * We must add this line to the scrollback. We'll
562 * remove a line from the top of the scrollback to
563 * replace it, or allocate a new one if the
564 * scrollback isn't full.
566 if (sblen
== savelines
) {
567 sblen
--, line2
= delpos234(scrollback
, 0);
569 line2
= smalloc(TSIZE
* (cols
+2));
572 addpos234(scrollback
, line
, sblen
);
575 for (i
= 0; i
< cols
; i
++)
576 line
[i
+1] = erase_char
;
578 addpos234(screen
, line
, botline
);
580 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
582 if (selstart
.y
< topline
) {
583 selstart
.y
= topline
;
587 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
589 if (selend
.y
< topline
) {
601 * Move the cursor to a given position, clipping at boundaries. We
602 * may or may not want to clip at the scroll margin: marg_clip is 0
603 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
604 * even _being_ outside the margins.
606 static void move (int x
, int y
, int marg_clip
) {
612 if ((curs
.y
>= marg_t
|| marg_clip
== 2) && y
< marg_t
)
614 if ((curs
.y
<= marg_b
|| marg_clip
== 2) && y
> marg_b
)
628 * Save or restore the cursor and SGR mode.
630 static void save_cursor(int save
) {
633 save_attr
= curr_attr
;
635 save_csattr
= cset_attr
[cset
];
638 /* Make sure the window hasn't shrunk since the save */
639 if (curs
.x
>= cols
) curs
.x
= cols
-1;
640 if (curs
.y
>= rows
) curs
.y
= rows
-1;
642 curr_attr
= save_attr
;
644 cset_attr
[cset
] = save_csattr
;
646 if (use_bce
) erase_char
= (' ' |(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
651 * Erase a large portion of the screen: the whole screen, or the
652 * whole line, or parts thereof.
654 static void erase_lots (int line_only
, int from_begin
, int to_end
) {
657 unsigned long *ldata
;
678 check_selection (start
, end
);
680 /* Clear screen also forces a full window redraw, just in case. */
681 if (start
.y
== 0 && start
.x
== 0 && end
.y
== rows
)
684 ldata
= lineptr(start
.y
);
685 while (poslt(start
, end
)) {
686 if (start
.y
== cols
&& !erase_lattr
)
687 ldata
[start
.x
] &= ~ATTR_WRAPPED
;
689 ldata
[start
.x
] = erase_char
;
690 if (incpos(start
) && start
.y
< rows
)
691 ldata
= lineptr(start
.y
);
696 * Insert or delete characters within the current line. n is +ve if
697 * insertion is desired, and -ve for deletion.
699 static void insch (int n
) {
700 int dir
= (n
< 0 ?
-1 : +1);
703 unsigned long *ldata
;
705 n
= (n
< 0 ?
-n
: n
);
706 if (n
> cols
- curs
.x
)
708 m
= cols
- curs
.x
- n
;
710 cursplus
.x
= curs
.x
+ n
;
711 check_selection (curs
, cursplus
);
712 ldata
= lineptr(curs
.y
);
714 memmove (ldata
+ curs
.x
, ldata
+ curs
.x
+ n
, m
*TSIZE
);
716 ldata
[curs
.x
+ m
++] = erase_char
;
718 memmove (ldata
+ curs
.x
+ n
, ldata
+ curs
.x
, m
*TSIZE
);
720 ldata
[curs
.x
+ n
] = erase_char
;
725 * Toggle terminal mode `mode' to state `state'. (`query' indicates
726 * whether the mode is a DEC private one or a normal one.)
728 static void toggle_mode (int mode
, int query
, int state
) {
731 if (query
) switch (mode
) {
732 case 1: /* application cursor keys */
733 app_cursor_keys
= state
;
735 case 2: /* VT52 mode */
738 case 3: /* 80/132 columns */
740 request_resize (state ?
132 : 80, rows
, 1);
743 case 5: /* reverse video */
745 * Toggle reverse video. If we receive an OFF within the
746 * visual bell timeout period after an ON, we trigger an
747 * effective visual bell, so that ESC[?5hESC[?5l will
748 * always be an actually _visible_ visual bell.
750 ticks
= GetTickCount();
751 if (rvideo
&& !state
&& /* we're turning it off */
752 ticks
< rvbell_timeout
) { /* and it's not long since it was turned on */
753 in_vbell
= TRUE
; /* we may clear rvideo but we set in_vbell */
754 if (vbell_timeout
< rvbell_timeout
) /* don't move vbell end forward */
755 vbell_timeout
= rvbell_timeout
; /* vbell end is at least then */
756 } else if (!rvideo
&& state
) {
757 /* This is an ON, so we notice the time and save it. */
758 rvbell_timeout
= ticks
+ VBELL_TIMEOUT
;
761 seen_disp_event
= TRUE
;
762 if (state
) term_update();
764 case 6: /* DEC origin mode */
767 case 7: /* auto wrap */
770 case 8: /* auto key repeat */
773 case 10: /* set local edit mode */
774 term_editing
= state
;
775 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
777 case 25: /* enable/disable cursor */
778 compatibility2(OTHER
,VT220
);
780 seen_disp_event
= TRUE
;
782 case 47: /* alternate screen */
783 compatibility(OTHER
);
788 case 1000: /* xterm mouse 1 */
789 xterm_mouse
= state ?
1 : 0;
790 set_raw_mouse_mode(state
);
792 case 1002: /* xterm mouse 2 */
793 xterm_mouse
= state ?
2: 0;
794 set_raw_mouse_mode(state
);
796 } else switch (mode
) {
797 case 4: /* set insert mode */
798 compatibility(VT102
);
801 case 12: /* set echo mode */
802 term_echoing
= !state
;
803 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
805 case 20: /* Return sends ... */
806 cr_lf_return
= state
;
812 * Process an OSC sequence: set window title or icon name.
814 static void do_osc(void) {
817 wordness
[(unsigned char)osc_string
[osc_strlen
]] = esc_args
[0];
819 osc_string
[osc_strlen
] = '\0';
820 switch (esc_args
[0]) {
823 set_icon (osc_string
);
824 if (esc_args
[0] == 1)
826 /* fall through: parameter 0 means set both */
829 set_title (osc_string
);
836 * Remove everything currently in `inbuf' and stick it up on the
837 * in-memory display. There's a big state machine in here to
838 * process escape sequences...
840 void term_out(void) {
843 for(inbuf_reap
= 0; inbuf_reap
< inbuf_head
; inbuf_reap
++)
845 c
= inbuf
[inbuf_reap
];
848 * Optionally log the session traffic to a file. Useful for
849 * debugging and possibly also useful for actual logging.
851 logtraffic((unsigned char)c
, LGTYP_DEBUG
);
853 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
854 * be able to display 8-bit characters, but I'll let that go 'cause
857 if( ( (c
&0x60) == 0 || c
== '\177') &&
858 termstate
< DO_CTRLS
&&
859 ( (c
&0x80) == 0 || has_compat(VT220
))) {
861 case '\005': /* terminal type query */
862 /* Strictly speaking this is VT100 but a VT100 defaults to
863 * no response. Other terminals respond at their option.
865 * Don't put a CR in the default string as this tends to
866 * upset some weird software.
868 * An xterm returns "xterm" (5 characters)
870 compatibility(ANSIMIN
);
872 char abuf
[256], *s
, *d
;
874 for(s
=cfg
.answerback
, d
=abuf
; *s
; s
++) {
877 if (*s
>= 'a' && *s
<= 'z')
878 *d
++ = (*s
- ('a'-1));
879 else if ((*s
>='@' && *s
<='_') ||
880 *s
== '?' || (*s
&0x80))
886 else if (*s
== '^') {
890 *d
++ = xlat_kbd2tty((unsigned char)*s
);
892 ldisc_send (abuf
, d
-abuf
);
897 struct beeptime
*newbeep
;
900 ticks
= GetTickCount();
902 if (!beep_overloaded
) {
903 newbeep
= smalloc(sizeof(struct beeptime
));
904 newbeep
->ticks
= ticks
;
905 newbeep
->next
= NULL
;
909 beeptail
->next
= newbeep
;
915 * Throw out any beeps that happened more than
919 beephead
->ticks
< ticks
- cfg
.bellovl_t
) {
920 struct beeptime
*tmp
= beephead
;
921 beephead
= tmp
->next
;
928 if (cfg
.bellovl
&& beep_overloaded
&&
929 ticks
-lastbeep
>= cfg
.bellovl_s
) {
931 * If we're currently overloaded and the
932 * last beep was more than s seconds ago,
933 * leave overload mode.
935 beep_overloaded
= FALSE
;
936 } else if (cfg
.bellovl
&& !beep_overloaded
&&
937 nbeeps
>= cfg
.bellovl_n
) {
939 * Now, if we have n or more beeps
940 * remaining in the queue, go into overload
943 beep_overloaded
= TRUE
;
948 * Perform an actual beep if we're not overloaded.
950 if ((!cfg
.bellovl
|| !beep_overloaded
) && cfg
.beep
!= 0) {
953 else if(cfg
.beep
== 2) {
955 vbell_timeout
= ticks
+ VBELL_TIMEOUT
;
963 if (curs
.x
== 0 && curs
.y
== 0)
965 else if (curs
.x
== 0 && curs
.y
> 0)
966 curs
.x
= cols
-1, curs
.y
--;
972 seen_disp_event
= TRUE
;
975 compatibility(VT100
);
979 compatibility(VT100
);
984 termstate
= VT52_ESC
;
986 compatibility(ANSIMIN
);
987 termstate
= SEEN_ESC
;
991 compatibility(VT220
);
992 termstate
= SEEN_CSI
;
994 esc_args
[0] = ARG_DEFAULT
;
998 compatibility(VT220
);
999 termstate
= SEEN_OSC
;
1006 seen_disp_event
= TRUE
;
1008 logtraffic((unsigned char)c
,LGTYP_ASCII
);
1012 compatibility(VT100
);
1014 if (curs
.y
== marg_b
)
1015 scroll (marg_t
, marg_b
, 1, TRUE
);
1016 else if (curs
.y
< rows
-1)
1022 seen_disp_event
= 1;
1024 logtraffic((unsigned char)c
,LGTYP_ASCII
);
1028 pos old_curs
= curs
;
1029 unsigned long *ldata
= lineptr(curs
.y
);
1033 } while (curs
.x
< cols
-1 && !tabs
[curs
.x
]);
1035 if ((ldata
[cols
] & LATTR_MODE
) != LATTR_NORM
)
1037 if (curs
.x
>= cols
/2)
1047 check_selection (old_curs
, curs
);
1049 seen_disp_event
= TRUE
;
1051 case '\177': /* Destructive backspace
1052 This does nothing on a real VT100 */
1053 compatibility(OTHER
);
1054 if (curs
.x
&& !wrapnext
) curs
.x
--;
1057 *cpos
= (' ' | curr_attr
| ATTR_ASCII
);
1061 else switch (termstate
) {
1063 /* Only graphic characters get this far, ctrls are stripped above */
1064 if (wrapnext
&& wrap
) {
1065 cpos
[1] |= ATTR_WRAPPED
;
1066 if (curs
.y
== marg_b
)
1067 scroll (marg_t
, marg_b
, 1, TRUE
);
1068 else if (curs
.y
< rows
-1)
1076 if (selstate
!= NO_SELECTION
) {
1077 pos cursplus
= curs
;
1079 check_selection (curs
, cursplus
);
1081 switch (cset_attr
[cset
]) {
1083 * Linedraw characters are different from 'ESC ( B'
1084 * only for a small range. For ones outside that
1085 * range, make sure we use the same font as well as
1086 * the same encoding.
1089 if (c
<0x5f || c
>0x7F)
1090 *cpos
++ = xlat_tty2scr((unsigned char)c
) | curr_attr
|
1093 *cpos
++ = ' ' | curr_attr
| ATTR_ASCII
;
1095 *cpos
++ = ((unsigned char)c
) | curr_attr
| ATTR_LINEDRW
;
1098 /* If UK-ASCII, make the '#' a LineDraw Pound */
1100 *cpos
++ = '}' | curr_attr
| ATTR_LINEDRW
;
1105 *cpos
= xlat_tty2scr((unsigned char)c
) | curr_attr
|
1106 (c
<= 0x7F ? cset_attr
[cset
] : ATTR_ASCII
);
1107 logtraffic((unsigned char)c
, LGTYP_ASCII
);
1112 if (curs
.x
== cols
) {
1117 seen_disp_event
= 1;
1121 termstate
= TOPLEVEL
;
1125 * This state is virtually identical to SEEN_ESC, with the
1126 * exception that we have an OSC sequence in the pipeline,
1127 * and _if_ we see a backslash, we process it.
1131 termstate
= TOPLEVEL
;
1134 /* else fall through */
1136 termstate
= TOPLEVEL
;
1138 case ' ': /* some weird sequence? */
1139 compatibility(VT220
);
1140 termstate
= IGNORE_NEXT
;
1142 case '[': /* enter CSI mode */
1143 termstate
= SEEN_CSI
;
1145 esc_args
[0] = ARG_DEFAULT
;
1148 case ']': /* xterm escape sequences */
1149 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1150 compatibility(OTHER
);
1151 termstate
= SEEN_OSC
;
1154 case '(': /* should set GL */
1155 compatibility(VT100
);
1158 case ')': /* should set GR */
1159 compatibility(VT100
);
1162 case '7': /* save cursor */
1163 compatibility(VT100
);
1166 case '8': /* restore cursor */
1167 compatibility(VT100
);
1168 save_cursor (FALSE
);
1169 seen_disp_event
= TRUE
;
1172 compatibility(VT100
);
1173 app_keypad_keys
= TRUE
;
1176 compatibility(VT100
);
1177 app_keypad_keys
= FALSE
;
1179 case 'D': /* exactly equivalent to LF */
1180 compatibility(VT100
);
1181 if (curs
.y
== marg_b
)
1182 scroll (marg_t
, marg_b
, 1, TRUE
);
1183 else if (curs
.y
< rows
-1)
1187 seen_disp_event
= TRUE
;
1189 case 'E': /* exactly equivalent to CR-LF */
1190 compatibility(VT100
);
1192 if (curs
.y
== marg_b
)
1193 scroll (marg_t
, marg_b
, 1, TRUE
);
1194 else if (curs
.y
< rows
-1)
1198 seen_disp_event
= TRUE
;
1200 case 'M': /* reverse index - backwards LF */
1201 compatibility(VT100
);
1202 if (curs
.y
== marg_t
)
1203 scroll (marg_t
, marg_b
, -1, TRUE
);
1204 else if (curs
.y
> 0)
1208 seen_disp_event
= TRUE
;
1210 case 'Z': /* terminal type query */
1211 compatibility(VT100
);
1212 ldisc_send (id_string
, strlen(id_string
));
1214 case 'c': /* restore power-on settings */
1215 compatibility(VT100
);
1218 request_resize (80, rows
, 1);
1223 seen_disp_event
= TRUE
;
1225 case '#': /* ESC # 8 fills screen with Es :-) */
1226 compatibility(VT100
);
1227 termstate
= SEEN_ESCHASH
;
1229 case 'H': /* set a tab */
1230 compatibility(VT100
);
1231 tabs
[curs
.x
] = TRUE
;
1236 termstate
= TOPLEVEL
; /* default */
1239 if (esc_nargs
<= ARGS_MAX
) {
1240 if (esc_args
[esc_nargs
-1] == ARG_DEFAULT
)
1241 esc_args
[esc_nargs
-1] = 0;
1242 esc_args
[esc_nargs
-1] =
1243 10 * esc_args
[esc_nargs
-1] + c
- '0';
1245 termstate
= SEEN_CSI
;
1249 if (++esc_nargs
<= ARGS_MAX
)
1250 esc_args
[esc_nargs
-1] = ARG_DEFAULT
;
1251 termstate
= SEEN_CSI
;
1255 if( esc_query
) esc_query
= -1;
1256 else if( c
== '?' ) esc_query
= TRUE
;
1258 termstate
= SEEN_CSI
;
1260 else switch (ANSI(c
,esc_query
)) {
1261 case 'A': /* move up N lines */
1262 move (curs
.x
, curs
.y
- def(esc_args
[0], 1), 1);
1263 seen_disp_event
= TRUE
;
1265 case 'e': /* move down N lines */
1266 compatibility(ANSI
);
1268 move (curs
.x
, curs
.y
+ def(esc_args
[0], 1), 1);
1269 seen_disp_event
= TRUE
;
1271 case 'a': /* move right N cols */
1272 compatibility(ANSI
);
1273 case ANSI('c', '>'): /* report xterm version */
1274 compatibility(OTHER
);
1275 /* this reports xterm version 136 so that VIM can
1276 use the drag messages from the mouse reporting */
1277 ldisc_send("\033[>0;136;0c", 11);
1280 move (curs
.x
+ def(esc_args
[0], 1), curs
.y
, 1);
1281 seen_disp_event
= TRUE
;
1283 case 'D': /* move left N cols */
1284 move (curs
.x
- def(esc_args
[0], 1), curs
.y
, 1);
1285 seen_disp_event
= TRUE
;
1287 case 'E': /* move down N lines and CR */
1288 compatibility(ANSI
);
1289 move (0, curs
.y
+ def(esc_args
[0], 1), 1);
1290 seen_disp_event
= TRUE
;
1292 case 'F': /* move up N lines and CR */
1293 compatibility(ANSI
);
1294 move (0, curs
.y
- def(esc_args
[0], 1), 1);
1295 seen_disp_event
= TRUE
;
1297 case 'G': case '`': /* set horizontal posn */
1298 compatibility(ANSI
);
1299 move (def(esc_args
[0], 1) - 1, curs
.y
, 0);
1300 seen_disp_event
= TRUE
;
1302 case 'd': /* set vertical posn */
1303 compatibility(ANSI
);
1304 move (curs
.x
, (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1306 seen_disp_event
= TRUE
;
1308 case 'H': case 'f': /* set horz and vert posns at once */
1310 esc_args
[1] = ARG_DEFAULT
;
1311 move (def(esc_args
[1], 1) - 1,
1312 (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1314 seen_disp_event
= TRUE
;
1316 case 'J': /* erase screen or parts of it */
1318 unsigned int i
= def(esc_args
[0], 0) + 1;
1321 erase_lots(FALSE
, !!(i
& 2), !!(i
& 1));
1324 seen_disp_event
= TRUE
;
1326 case 'K': /* erase line or parts of it */
1328 unsigned int i
= def(esc_args
[0], 0) + 1;
1331 erase_lots(TRUE
, !!(i
& 2), !!(i
& 1));
1333 seen_disp_event
= TRUE
;
1335 case 'L': /* insert lines */
1336 compatibility(VT102
);
1337 if (curs
.y
<= marg_b
)
1338 scroll (curs
.y
, marg_b
, -def(esc_args
[0], 1), FALSE
);
1340 seen_disp_event
= TRUE
;
1342 case 'M': /* delete lines */
1343 compatibility(VT102
);
1344 if (curs
.y
<= marg_b
)
1345 scroll (curs
.y
, marg_b
, def(esc_args
[0], 1), TRUE
);
1347 seen_disp_event
= TRUE
;
1349 case '@': /* insert chars */
1350 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1351 compatibility(VT102
);
1352 insch (def(esc_args
[0], 1));
1353 seen_disp_event
= TRUE
;
1355 case 'P': /* delete chars */
1356 compatibility(VT102
);
1357 insch (-def(esc_args
[0], 1));
1358 seen_disp_event
= TRUE
;
1360 case 'c': /* terminal type query */
1361 compatibility(VT100
);
1362 /* This is the response for a VT102 */
1363 ldisc_send (id_string
, strlen(id_string
));
1365 case 'n': /* cursor position query */
1366 if (esc_args
[0] == 6) {
1368 sprintf (buf
, "\033[%d;%dR", curs
.y
+ 1, curs
.x
+ 1);
1369 ldisc_send (buf
, strlen(buf
));
1371 else if (esc_args
[0] == 5) {
1372 ldisc_send ("\033[0n", 4);
1375 case 'h': /* toggle modes to high */
1377 compatibility(VT100
);
1380 for (i
=0; i
<esc_nargs
; i
++)
1381 toggle_mode (esc_args
[i
], esc_query
, TRUE
);
1384 case 'l': /* toggle modes to low */
1386 compatibility(VT100
);
1389 for (i
=0; i
<esc_nargs
; i
++)
1390 toggle_mode (esc_args
[i
], esc_query
, FALSE
);
1393 case 'g': /* clear tabs */
1394 compatibility(VT100
);
1395 if (esc_nargs
== 1) {
1396 if (esc_args
[0] == 0) {
1397 tabs
[curs
.x
] = FALSE
;
1398 } else if (esc_args
[0] == 3) {
1400 for (i
= 0; i
< cols
; i
++)
1405 case 'r': /* set scroll margins */
1406 compatibility(VT100
);
1407 if (esc_nargs
<= 2) {
1409 top
= def(esc_args
[0], 1) - 1;
1410 bot
= (esc_nargs
<= 1 || esc_args
[1] == 0 ? rows
:
1411 def(esc_args
[1], rows
)) - 1;
1414 /* VTTEST Bug 9 - if region is less than 2 lines
1415 * don't change region.
1422 * I used to think the cursor should be
1423 * placed at the top of the newly marginned
1424 * area. Apparently not: VMS TPU falls over
1427 * Well actually it should for Origin mode - RDB
1429 curs
.y
= (dec_om ? marg_t
: 0);
1431 seen_disp_event
= TRUE
;
1435 case 'm': /* set graphics rendition */
1438 * A VT100 without the AVO only had one attribute, either
1439 * underline or reverse video depending on the cursor type,
1440 * this was selected by CSI 7m.
1443 * This is DIM on the VT100-AVO and VT102
1445 * This is BLINK on the VT100-AVO and VT102+
1447 * This is INVIS on the VT100-AVO and VT102
1449 * This like 22 disables BOLD, DIM and INVIS
1451 * The ANSI colours appear on any terminal that has colour
1452 * (obviously) but the interaction between sgr0 and the
1453 * colours varies but is usually related to the background
1454 * colour erase item.
1455 * The interaction between colour attributes and the mono
1456 * ones is also very implementation dependent.
1458 * The 39 and 49 attributes are likely to be unimplemented.
1461 for (i
=0; i
<esc_nargs
; i
++) {
1462 switch (def(esc_args
[i
], 0)) {
1463 case 0: /* restore defaults */
1464 curr_attr
= ATTR_DEFAULT
; break;
1465 case 1: /* enable bold */
1466 compatibility(VT100AVO
);
1467 curr_attr
|= ATTR_BOLD
; break;
1468 case 21: /* (enable double underline) */
1469 compatibility(OTHER
);
1470 case 4: /* enable underline */
1471 compatibility(VT100AVO
);
1472 curr_attr
|= ATTR_UNDER
; break;
1473 case 5: /* enable blink */
1474 compatibility(VT100AVO
);
1475 curr_attr
|= ATTR_BLINK
; break;
1476 case 7: /* enable reverse video */
1477 curr_attr
|= ATTR_REVERSE
; break;
1478 case 22: /* disable bold */
1479 compatibility2(OTHER
,VT220
);
1480 curr_attr
&= ~ATTR_BOLD
; break;
1481 case 24: /* disable underline */
1482 compatibility2(OTHER
,VT220
);
1483 curr_attr
&= ~ATTR_UNDER
; break;
1484 case 25: /* disable blink */
1485 compatibility2(OTHER
,VT220
);
1486 curr_attr
&= ~ATTR_BLINK
; break;
1487 case 27: /* disable reverse video */
1488 compatibility2(OTHER
,VT220
);
1489 curr_attr
&= ~ATTR_REVERSE
; break;
1490 case 30: case 31: case 32: case 33:
1491 case 34: case 35: case 36: case 37:
1493 curr_attr
&= ~ATTR_FGMASK
;
1494 curr_attr
|= (esc_args
[i
] - 30) << ATTR_FGSHIFT
;
1496 case 39: /* default-foreground */
1497 curr_attr
&= ~ATTR_FGMASK
;
1498 curr_attr
|= ATTR_DEFFG
;
1500 case 40: case 41: case 42: case 43:
1501 case 44: case 45: case 46: case 47:
1503 curr_attr
&= ~ATTR_BGMASK
;
1504 curr_attr
|= (esc_args
[i
] - 40) << ATTR_BGSHIFT
;
1506 case 49: /* default-background */
1507 curr_attr
&= ~ATTR_BGMASK
;
1508 curr_attr
|= ATTR_DEFBG
;
1515 (curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
|ATTR_BLINK
))
1519 case 's': /* save cursor */
1522 case 'u': /* restore cursor */
1523 save_cursor (FALSE
);
1524 seen_disp_event
= TRUE
;
1526 case 't': /* set page size - ie window height */
1528 * VT340/VT420 sequence DECSLPP, DEC only allows values
1529 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1530 * illegal values (eg first arg 1..9) for window changing
1533 compatibility(VT340TEXT
);
1534 if (esc_nargs
<=1 && (esc_args
[0]<1 || esc_args
[0]>=24)) {
1535 request_resize (cols
, def(esc_args
[0], 24), 0);
1539 case ANSI('|', '*'):
1540 /* VT420 sequence DECSNLS
1541 * Set number of lines on screen
1542 * VT420 uses VGA like hardware and can support any size in
1543 * reasonable range (24..49 AIUI) with no default specified.
1545 compatibility(VT420
);
1546 if (esc_nargs
==1 && esc_args
[0]>0) {
1547 request_resize (cols
, def(esc_args
[0], cfg
.height
), 0);
1551 case ANSI('|', '$'):
1552 /* VT340/VT420 sequence DECSCPP
1553 * Set number of columns per page
1554 * Docs imply range is only 80 or 132, but I'll allow any.
1556 compatibility(VT340TEXT
);
1558 request_resize (def(esc_args
[0], cfg
.width
), rows
, 0);
1562 case 'X': /* write N spaces w/o moving cursor */
1563 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1564 compatibility(ANSIMIN
);
1566 int n
= def(esc_args
[0], 1);
1568 unsigned long *p
= cpos
;
1569 if (n
> cols
- curs
.x
)
1573 check_selection (curs
, cursplus
);
1576 seen_disp_event
= TRUE
;
1579 case 'x': /* report terminal characteristics */
1580 compatibility(VT100
);
1583 int i
= def(esc_args
[0], 0);
1584 if (i
== 0 || i
== 1) {
1585 strcpy (buf
, "\033[2;1;1;112;112;1;0x");
1587 ldisc_send (buf
, 20);
1592 compatibility(OTHER
);
1593 use_bce
= (esc_args
[0]<=0);
1594 erase_char
= ERASE_CHAR
;
1596 erase_char
= (' '|(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
1599 compatibility(OTHER
);
1600 blink_is_real
= (esc_args
[0]>=1);
1603 /* Allow the host to make this emulator a 'perfect' VT102.
1604 * This first appeared in the VT220, but we do need to get
1605 * back to PuTTY mode so I won't check it.
1607 * The arg in 40..42 are a PuTTY extension.
1608 * The 2nd arg, 8bit vs 7bit is not checked.
1610 * Setting VT102 mode should also change the Fkeys to
1611 * generate PF* codes as a real VT102 has no Fkeys.
1612 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1615 * Note ESC c will NOT change this!
1618 switch (esc_args
[0]) {
1619 case 61: compatibility_level
&= ~TM_VTXXX
;
1620 compatibility_level
|= TM_VT102
; break;
1621 case 62: compatibility_level
&= ~TM_VTXXX
;
1622 compatibility_level
|= TM_VT220
; break;
1624 default: if( esc_args
[0] > 60 && esc_args
[0] < 70 )
1625 compatibility_level
|= TM_VTXXX
;
1628 case 40: compatibility_level
&= TM_VTXXX
; break;
1629 case 41: compatibility_level
= TM_PUTTY
; break;
1630 case 42: compatibility_level
= TM_SCOANSI
; break;
1633 compatibility_level
= TM_PUTTY
; break;
1637 /* Change the response to CSI c */
1638 if (esc_args
[0] == 50) {
1641 strcpy(id_string
, "\033[?");
1642 for (i
=1; i
<esc_nargs
; i
++) {
1643 if (i
!=1) strcat(id_string
, ";");
1644 sprintf(lbuf
, "%d", esc_args
[i
]);
1645 strcat(id_string
, lbuf
);
1647 strcat(id_string
, "c");
1651 /* Is this a good idea ?
1652 * Well we should do a soft reset at this point ...
1654 if (!has_compat(VT420
) && has_compat(VT100
)) {
1655 if (reset_132
) request_resize (132, 24, 1);
1656 else request_resize ( 80, 24, 1);
1664 /* VT100 only here, checked above */
1667 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_GBCHR
;
1670 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_LINEDRW
;
1673 default: /* specifically, 'B' */
1674 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_ASCII
;
1677 if( !has_compat(VT220
) || c
!= '%' )
1678 termstate
= TOPLEVEL
;
1683 case 'P': /* Linux palette sequence */
1684 termstate
= SEEN_OSC_P
;
1687 case 'R': /* Linux palette reset */
1690 termstate
= TOPLEVEL
;
1692 case 'W': /* word-set */
1693 termstate
= SEEN_OSC_W
;
1696 case '0': case '1': case '2': case '3': case '4':
1697 case '5': case '6': case '7': case '8': case '9':
1698 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1702 * Grotty hack to support xterm and DECterm title
1703 * sequences concurrently.
1705 if (esc_args
[0] == 2) {
1709 /* else fall through */
1711 termstate
= OSC_STRING
;
1717 * This OSC stuff is EVIL. It takes just one character to get into
1718 * sysline mode and it's not initially obvious how to get out.
1719 * So I've added CR and LF as string aborts.
1720 * This shouldn't effect compatibility as I believe embedded
1721 * control characters are supposed to be interpreted (maybe?)
1722 * and they don't display anything useful anyway.
1726 if (c
== '\n' || c
== '\r') {
1727 termstate
= TOPLEVEL
;
1728 } else if (c
== 0234 || c
== '\007' ) {
1730 * These characters terminate the string; ST and BEL
1731 * terminate the sequence and trigger instant
1732 * processing of it, whereas ESC goes back to SEEN_ESC
1733 * mode unless it is followed by \, in which case it is
1734 * synonymous with ST in the first place.
1737 termstate
= TOPLEVEL
;
1738 } else if (c
== '\033')
1739 termstate
= OSC_MAYBE_ST
;
1740 else if (osc_strlen
< OSC_STR_MAX
)
1741 osc_string
[osc_strlen
++] = c
;
1745 int max
= (osc_strlen
== 0 ?
21 : 16);
1747 if (c
>= '0' && c
<= '9')
1749 else if (c
>= 'A' && c
<= 'A'+max
-10)
1751 else if (c
>= 'a' && c
<= 'a'+max
-10)
1754 termstate
= TOPLEVEL
;
1755 osc_string
[osc_strlen
++] = val
;
1756 if (osc_strlen
>= 7) {
1757 palette_set (osc_string
[0],
1758 osc_string
[1] * 16 + osc_string
[2],
1759 osc_string
[3] * 16 + osc_string
[4],
1760 osc_string
[5] * 16 + osc_string
[6]);
1762 termstate
= TOPLEVEL
;
1768 case '0': case '1': case '2': case '3': case '4':
1769 case '5': case '6': case '7': case '8': case '9':
1770 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1773 termstate
= OSC_STRING
;
1779 unsigned long nlattr
;
1780 unsigned long *ldata
;
1786 for (i
= 0; i
< rows
; i
++) {
1788 for (j
= 0; j
< cols
; j
++)
1789 ldata
[j
] = ATTR_DEFAULT
| 'E';
1793 seen_disp_event
= TRUE
;
1794 scrtop
.x
= scrtop
.y
= 0;
1795 scrbot
.x
= 0; scrbot
.y
= rows
;
1796 check_selection (scrtop
, scrbot
);
1799 case '3': nlattr
= LATTR_TOP
; goto lattr_common
;
1800 case '4': nlattr
= LATTR_BOT
; goto lattr_common
;
1801 case '5': nlattr
= LATTR_NORM
; goto lattr_common
;
1802 case '6': nlattr
= LATTR_WIDE
;
1805 ldata
= lineptr(curs
.y
);
1806 ldata
[cols
] &= ~LATTR_MODE
;
1807 ldata
[cols
] |= nlattr
;
1810 termstate
= TOPLEVEL
;
1813 termstate
= TOPLEVEL
;
1814 seen_disp_event
= TRUE
;
1817 move (curs
.x
, curs
.y
- 1, 1);
1820 move (curs
.x
, curs
.y
+ 1, 1);
1823 move (curs
.x
+ 1, curs
.y
, 1);
1826 move (curs
.x
- 1, curs
.y
, 1);
1829 cset_attr
[cset
=0] = ATTR_LINEDRW
;
1832 cset_attr
[cset
=0] = ATTR_ASCII
;
1839 scroll (0, rows
-1, -1, TRUE
);
1840 else if (curs
.y
> 0)
1846 erase_lots(FALSE
, FALSE
, TRUE
);
1850 erase_lots(TRUE
, FALSE
, TRUE
);
1853 /* XXX Print cursor line */
1856 /* XXX Start controller mode */
1859 /* XXX Stop controller mode */
1862 termstate
= VT52_Y1
;
1865 ldisc_send ("\033/Z", 3);
1868 app_keypad_keys
= TRUE
;
1871 app_keypad_keys
= FALSE
;
1874 /* XXX This should switch to VT100 mode not current or default
1875 * VT mode. But this will only have effect in a VT220+
1881 /* XXX Enter auto print mode */
1884 /* XXX Exit auto print mode */
1887 /* XXX Print screen */
1892 termstate
= VT52_Y2
;
1893 move(curs
.x
, c
-' ', 0);
1896 termstate
= TOPLEVEL
;
1897 move(c
-' ', curs
.y
, 0);
1900 if (selstate
!= NO_SELECTION
) {
1901 pos cursplus
= curs
;
1903 check_selection (curs
, cursplus
);
1910 * Compare two lines to determine whether they are sufficiently
1911 * alike to scroll-optimise one to the other. Return the degree of
1914 static int linecmp (unsigned long *a
, unsigned long *b
) {
1917 for (i
=n
=0; i
< cols
; i
++)
1918 n
+= (*a
++ == *b
++);
1923 * Given a context, update the window. Out of paranoia, we don't
1924 * allow WM_PAINT responses to do scrolling optimisations.
1926 static void do_paint (Context ctx
, int may_optimise
) {
1927 int i
, j
, start
, our_curs_y
;
1928 unsigned long attr
, rv
, cursor
;
1934 * Check the visual bell state.
1937 ticks
= GetTickCount();
1938 if (ticks
- vbell_timeout
>= 0)
1943 * screen array, disptop, scrtop,
1945 * cfg.blinkpc, blink_is_real, tblinker,
1946 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus
1950 if (blinker
|| !cfg
.blink_cur
)
1951 cursor
= ATTR_ACTCURS
;
1956 cursor
= ATTR_PASCURS
;
1958 cursor
|= ATTR_RIGHTCURS
;
1962 rv
= (!rvideo
^ !in_vbell ? ATTR_REVERSE
: 0);
1963 our_curs_y
= curs
.y
- disptop
;
1965 for (i
=0; i
<rows
; i
++) {
1966 unsigned long *ldata
;
1968 scrpos
.y
= i
+ disptop
;
1969 ldata
= lineptr(scrpos
.y
);
1970 lattr
= (ldata
[cols
] & LATTR_MODE
);
1971 for (j
=0; j
<=cols
; j
++) {
1972 unsigned long d
= ldata
[j
];
1973 int idx
= i
*(cols
+1)+j
;
1976 wanttext
[idx
] = lattr
| (((d
&~ ATTR_WRAPPED
) ^ rv
1977 ^ (posle(selstart
, scrpos
) &&
1978 poslt(scrpos
, selend
) ?
1979 ATTR_REVERSE
: 0)) |
1980 (i
==our_curs_y
&& j
==curs
.x ? cursor
: 0));
1981 if (blink_is_real
) {
1982 if (has_focus
&& tblinker
&& (wanttext
[idx
]&ATTR_BLINK
) )
1984 wanttext
[idx
] &= ATTR_MASK
;
1985 wanttext
[idx
] += ' ';
1987 wanttext
[idx
] &= ~ATTR_BLINK
;
1993 * We would perform scrolling optimisations in here, if they
1994 * didn't have a nasty tendency to cause the whole sodding
1995 * program to hang for a second at speed-critical moments.
1996 * We'll leave it well alone...
1999 for (i
=0; i
<rows
; i
++) {
2000 int idx
= i
*(cols
+1);
2001 int lattr
= (wanttext
[idx
+cols
] & LATTR_MODE
);
2003 for (j
=0; j
<=cols
; j
++,idx
++) {
2004 unsigned long t
= wanttext
[idx
];
2005 int needs_update
= (j
< cols
&& t
!= disptext
[idx
]);
2006 int keep_going
= (start
!= -1 && needs_update
&&
2007 (t
& ATTR_MASK
) == attr
&&
2008 j
-start
< sizeof(ch
));
2009 if (start
!= -1 && !keep_going
) {
2010 do_text (ctx
, start
, i
, ch
, j
-start
, attr
, lattr
);
2016 attr
= t
& ATTR_MASK
;
2018 ch
[j
-start
] = (char) (t
& CHAR_MASK
);
2026 * Flick the switch that says if blinking things should be shown or hidden.
2029 void term_blink(int flg
) {
2030 static long last_blink
= 0;
2031 static long last_tblink
= 0;
2032 long now
, blink_diff
;
2034 now
= GetTickCount();
2035 blink_diff
= now
-last_tblink
;
2037 /* Make sure the text blinks no more than 2Hz */
2038 if (blink_diff
<0 || blink_diff
>450)
2041 tblinker
= !tblinker
;
2050 blink_diff
= now
-last_blink
;
2052 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
2053 if (blink_diff
>=0 && blink_diff
<(long)GetCaretBlinkTime())
2061 * Invalidate the whole screen so it will be repainted in full.
2063 void term_invalidate(void) {
2066 for (i
=0; i
<rows
*(cols
+1); i
++)
2067 disptext
[i
] = ATTR_INVALID
;
2071 * Paint the window in response to a WM_PAINT message.
2073 void term_paint (Context ctx
, int l
, int t
, int r
, int b
) {
2074 int i
, j
, left
, top
, right
, bottom
;
2076 left
= l
/ font_width
;
2077 right
= (r
- 1) / font_width
;
2078 top
= t
/ font_height
;
2079 bottom
= (b
- 1) / font_height
;
2080 for (i
= top
; i
<= bottom
&& i
< rows
; i
++)
2082 if ( (disptext
[i
*(cols
+1)+cols
]&LATTR_MODE
) == LATTR_NORM
)
2083 for (j
= left
; j
<= right
&& j
< cols
; j
++)
2084 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
2086 for (j
= left
/2; j
<= right
/2+1 && j
< cols
; j
++)
2087 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
2090 /* This should happen soon enough, also for some reason it sometimes
2091 * fails to actually do anything when re-sizing ... painting the wrong
2093 do_paint (ctx, FALSE);
2098 * Attempt to scroll the scrollback. The second parameter gives the
2099 * position we want to scroll to; the first is +1 to denote that
2100 * this position is relative to the beginning of the scrollback, -1
2101 * to denote it is relative to the end, and 0 to denote that it is
2102 * relative to the current position.
2104 void term_scroll (int rel
, int where
) {
2105 int sbtop
= -count234(scrollback
);
2107 disptop
= (rel
< 0 ?
0 :
2108 rel
> 0 ? sbtop
: disptop
) + where
;
2109 if (disptop
< sbtop
)
2117 static void clipme(pos top
, pos bottom
, char *workbuf
) {
2118 char *wbptr
; /* where next char goes within workbuf */
2119 int wblen
= 0; /* workbuf len */
2120 int buflen
; /* amount of memory allocated to workbuf */
2122 if ( workbuf
!= NULL
) { /* user supplied buffer? */
2123 buflen
= -1; /* assume buffer passed in is big enough */
2124 wbptr
= workbuf
; /* start filling here */
2127 buflen
= 0; /* No data is available yet */
2129 while (poslt(top
, bottom
)) {
2131 unsigned long *ldata
= lineptr(top
.y
);
2137 if (!(ldata
[cols
] & ATTR_WRAPPED
)) {
2138 while ((ldata
[nlpos
.x
-1] & CHAR_MASK
) == 0x20 && poslt(top
, nlpos
))
2140 if (poslt(nlpos
, bottom
))
2143 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
2144 int ch
= (ldata
[top
.x
] & CHAR_MASK
);
2145 int set
= (ldata
[top
.x
] & CSET_MASK
);
2147 /* VT Specials -> ISO8859-1 for Cut&Paste */
2148 static const unsigned char poorman2
[] =
2149 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
2151 if (set
&& !cfg
.rawcnp
) {
2152 if (set
== ATTR_LINEDRW
&& ch
>= 0x60 && ch
< 0x7F) {
2154 if ((x
= poorman2
[2*(ch
-0x60)+1]) == ' ')
2156 ch
= (x
<<8) + poorman2
[2*(ch
-0x60)];
2161 if (cfg
.rawcnp
|| !!(ch
&0xE0)) {
2162 if ( wblen
== buflen
)
2164 workbuf
= srealloc(workbuf
, buflen
+= 100);
2165 wbptr
= workbuf
+ wblen
;
2168 *wbptr
++ = (unsigned char) ch
;
2176 for (i
=0; i
<sizeof(sel_nl
); i
++)
2178 if ( wblen
== buflen
)
2180 workbuf
= srealloc(workbuf
, buflen
+= 100);
2181 wbptr
= workbuf
+ wblen
;
2184 *wbptr
++ = sel_nl
[i
];
2190 write_clip (workbuf
, wblen
, FALSE
); /* transfer to clipboard */
2191 if ( buflen
> 0 ) /* indicates we allocated this buffer */
2195 void term_copyall (void) {
2197 top
.y
= -count234(scrollback
);
2199 clipme(top
, curs
, NULL
/* dynamic allocation */);
2203 * Spread the selection outwards according to the selection mode.
2205 static pos
sel_spread_half (pos p
, int dir
) {
2206 unsigned long *ldata
;
2209 ldata
= lineptr(p
.y
);
2214 * In this mode, every character is a separate unit, except
2215 * for runs of spaces at the end of a non-wrapping line.
2217 if (!(ldata
[cols
] & ATTR_WRAPPED
)) {
2218 unsigned long *q
= ldata
+cols
;
2219 while (q
> ldata
&& (q
[-1] & CHAR_MASK
) == 0x20)
2221 if (q
== ldata
+cols
)
2224 p
.x
= (dir
== -1 ? q
-ldata
: cols
- 1);
2229 * In this mode, the units are maximal runs of characters
2230 * whose `wordness' has the same value.
2232 wvalue
= wordness
[ldata
[p
.x
] & CHAR_MASK
];
2234 while (p
.x
< cols
&& wordness
[ldata
[p
.x
+1] & CHAR_MASK
] == wvalue
)
2237 while (p
.x
> 0 && wordness
[ldata
[p
.x
-1] & CHAR_MASK
] == wvalue
)
2243 * In this mode, every line is a unit.
2245 p
.x
= (dir
== -1 ?
0 : cols
- 1);
2251 static void sel_spread (void) {
2252 selstart
= sel_spread_half (selstart
, -1);
2254 selend
= sel_spread_half (selend
, +1);
2258 void term_mouse (Mouse_Button b
, Mouse_Action a
, int x
, int y
,
2259 int shift
, int ctrl
) {
2261 unsigned long *ldata
;
2264 if (y
>=rows
) y
= rows
-1;
2272 if (x
>=cols
) x
= cols
-1;
2274 selpoint
.y
= y
+ disptop
;
2276 ldata
= lineptr(selpoint
.y
);
2277 if ((ldata
[cols
]&LATTR_MODE
) != LATTR_NORM
)
2281 int encstate
= 0, r
, c
;
2283 static int is_down
= 0;
2287 encstate
= 0x20; /* left button down */
2298 case MBT_WHEEL_DOWN
:
2304 if (xterm_mouse
== 1)
2325 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
2326 ldisc_send(abuf
, 6);
2330 b
= translate_button(b
);
2332 if (b
== MBT_SELECT
&& a
== MA_CLICK
) {
2334 selstate
= ABOUT_TO
;
2335 selanchor
= selpoint
;
2337 } else if (b
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
2339 selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
2340 selstate
= DRAGGING
;
2341 selstart
= selanchor
= selpoint
;
2345 } else if ((b
== MBT_SELECT
&& a
== MA_DRAG
) ||
2346 (b
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
2347 if (selstate
== ABOUT_TO
&& poseq(selanchor
, selpoint
))
2349 if (b
== MBT_EXTEND
&& a
!= MA_DRAG
&& selstate
== SELECTED
) {
2350 if (posdiff(selpoint
,selstart
) < posdiff(selend
,selstart
)/2) {
2354 selanchor
= selstart
;
2356 selstate
= DRAGGING
;
2358 if (selstate
!= ABOUT_TO
&& selstate
!= DRAGGING
)
2359 selanchor
= selpoint
;
2360 selstate
= DRAGGING
;
2361 if (poslt(selpoint
, selanchor
)) {
2362 selstart
= selpoint
;
2366 selstart
= selanchor
;
2371 } else if ((b
== MBT_SELECT
|| b
== MBT_EXTEND
) && a
== MA_RELEASE
) {
2372 if (selstate
== DRAGGING
) {
2374 * We've completed a selection. We now transfer the
2375 * data to the clipboard.
2377 clipme(selstart
, selend
, selspace
);
2378 selstate
= SELECTED
;
2380 selstate
= NO_SELECTION
;
2381 } else if (b
== MBT_PASTE
&& (a
==MA_CLICK
|| a
==MA_2CLK
|| a
==MA_3CLK
)) {
2385 get_clip((void **) &data
, &len
);
2389 if (paste_buffer
) sfree(paste_buffer
);
2390 paste_pos
= paste_hold
= paste_len
= 0;
2391 paste_buffer
= smalloc(len
);
2394 while (p
< data
+len
) {
2395 while (p
< data
+len
&&
2396 !(p
<= data
+len
-sizeof(sel_nl
) &&
2397 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
2405 c
=xlat_kbd2tty(q
[i
]);
2406 paste_buffer
[paste_len
++] = c
;
2410 if (p
<= data
+len
-sizeof(sel_nl
) &&
2411 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
2412 paste_buffer
[paste_len
++] = '\r';
2413 p
+= sizeof(sel_nl
);
2418 /* Assume a small paste will be OK in one go. */
2419 if (paste_len
<256) {
2420 ldisc_send (paste_buffer
, paste_len
);
2421 if (paste_buffer
) sfree(paste_buffer
);
2423 paste_pos
= paste_hold
= paste_len
= 0;
2426 get_clip(NULL
, NULL
);
2432 void term_nopaste() {
2433 if(paste_len
== 0) return;
2434 sfree(paste_buffer
);
2440 static long last_paste
= 0;
2441 long now
, paste_diff
;
2443 if(paste_len
== 0) return;
2445 /* Don't wait forever to paste */
2447 now
= GetTickCount();
2448 paste_diff
= now
-last_paste
;
2449 if (paste_diff
>=0 && paste_diff
<450)
2454 while(paste_pos
<paste_len
)
2457 while (n
+ paste_pos
< paste_len
) {
2458 if (paste_buffer
[paste_pos
+ n
++] == '\r')
2461 ldisc_send (paste_buffer
+paste_pos
, n
);
2464 if (paste_pos
< paste_len
) {
2469 sfree(paste_buffer
);
2474 static void deselect (void) {
2475 selstate
= NO_SELECTION
;
2476 selstart
.x
= selstart
.y
= selend
.x
= selend
.y
= 0;
2479 void term_deselect (void) {
2484 int term_ldisc(int option
) {
2485 if (option
== LD_ECHO
) return term_echoing
;
2486 if (option
== LD_EDIT
) return term_editing
;
2491 * from_backend(), to get data from the backend for the terminal.
2493 void from_backend(int is_stderr
, char *data
, int len
) {
2495 if (inbuf_head
>= INBUF_SIZE
)
2497 inbuf
[inbuf_head
++] = *data
++;
2502 * Log session traffic.
2504 void logtraffic(unsigned char c
, int logmode
) {
2505 if (cfg
.logtype
> 0) {
2506 if (cfg
.logtype
== logmode
) {
2507 /* deferred open file from pgm start? */
2508 if (!lgfp
) logfopen();
2509 if (lgfp
) fputc (c
, lgfp
);
2514 /* open log file append/overwrite mode */
2515 void logfopen(void) {
2523 sprintf (writemod
, "wb"); /* default to rewrite */
2524 lgfp
= fopen(cfg
.logfilename
, "r"); /* file already present? */
2528 i
= askappend(cfg
.logfilename
);
2530 writemod
[0] = 'a'; /* set append mode */
2531 else if (i
== 0) { /* cancelled */
2533 cfg
.logtype
= 0; /* disable logging */
2538 lgfp
= fopen(cfg
.logfilename
, writemod
);
2539 if (lgfp
) { /* enter into event log */
2540 sprintf(buf
, "%s session log (%s mode) to file : ",
2541 (writemod
[0] == 'a') ?
"Appending" : "Writing new",
2542 (cfg
.logtype
== LGTYP_ASCII ?
"ASCII" :
2543 cfg
.logtype
== LGTYP_DEBUG ?
"raw" : "<ukwn>") );
2544 /* Make sure we do not exceed the output buffer size */
2545 strncat (buf
, cfg
.logfilename
, 128);
2546 buf
[strlen(buf
)] = '\0';
2549 /* --- write header line iinto log file */
2550 fputs ("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp
);
2553 strftime(buf
, 24, "%Y.%m.%d %H:%M:%S", tm
);
2555 fputs (" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp
);
2559 void logfclose (void) {
2560 if (lgfp
) { fclose(lgfp
); lgfp
= NULL
; }