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 unsigned long cset_attr
[2];
110 * Saved settings on the alternate screen.
112 static int alt_x
, alt_y
, alt_om
, alt_wrap
, alt_wnext
, alt_ins
, alt_cset
;
113 static int alt_t
, alt_b
;
114 static int alt_which
;
116 #define ARGS_MAX 32 /* max # of esc sequence arguments */
117 #define ARG_DEFAULT 0 /* if an arg isn't specified */
118 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
119 static int esc_args
[ARGS_MAX
];
120 static int esc_nargs
;
121 static int esc_query
;
122 #define ANSI(x,y) ((x)+((y)<<8))
123 #define ANSI_QUE(x) ANSI(x,TRUE)
125 #define OSC_STR_MAX 2048
126 static int osc_strlen
;
127 static char osc_string
[OSC_STR_MAX
+1];
130 static char id_string
[1024] = "\033[?6c";
132 static unsigned char *tabs
;
146 OSC_STRING
, OSC_MAYBE_ST
,
154 NO_SELECTION
, ABOUT_TO
, DRAGGING
, SELECTED
157 SM_CHAR
, SM_WORD
, SM_LINE
159 static pos selstart
, selend
, selanchor
;
161 static short wordness
[256] = {
162 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 */
163 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 */
164 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 */
165 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 */
166 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 */
167 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 */
168 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 */
169 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 */
172 static unsigned char sel_nl
[] = SEL_NL
;
173 static char * paste_buffer
= 0;
174 static int paste_len
, paste_pos
, paste_hold
;
177 * Internal prototypes.
179 static void do_paint (Context
, int);
180 static void erase_lots (int, int, int);
181 static void swap_screen (int);
182 static void update_sbar (void);
183 static void deselect (void);
184 /* log session to file stuff ... */
185 static FILE *lgfp
= NULL
;
186 static void logtraffic(unsigned char c
, int logmode
);
189 * Retrieve a line of the screen or of the scrollback, according to
190 * whether the y coordinate is non-negative or negative
193 unsigned long *lineptr(int y
, int lineno
) {
194 unsigned long *line
, lineattrs
;
196 int i
, treeindex
, oldlen
;
202 whichtree
= scrollback
;
203 treeindex
= y
+ count234(scrollback
);
205 line
= index234(whichtree
, treeindex
);
207 /* We assume that we don't screw up and retrieve something out of range. */
209 debug(("line=%d y=%d treeindex=%d\n", lineno
, y
, treeindex
));
210 debug(("screen:%d scrollback:%d\n", count234(screen
), count234(scrollback
)));
211 assert(line
!= NULL
);
214 if (line
[0] != cols
) {
216 * This line is the wrong length, which probably means it
217 * hasn't been accessed since a resize. Resize it now.
220 lineattrs
= line
[oldlen
+1];
221 delpos234(whichtree
, treeindex
);
222 line
= srealloc(line
, TSIZE
* (2+cols
));
224 for (i
= oldlen
; i
< cols
; i
++)
225 line
[i
+1] = ERASE_CHAR
;
226 line
[cols
+1] = lineattrs
& LATTR_MODE
;
227 addpos234(whichtree
, line
, treeindex
);
232 #define lineptr(x) lineptr(x,__LINE__)
234 * Set up power-on settings for the terminal.
236 static void power_on(void) {
237 curs
.x
= curs
.y
= alt_x
= alt_y
= savecurs
.x
= savecurs
.y
= 0;
240 alt_b
= marg_b
= rows
- 1;
245 for (i
= 0; i
< cols
; i
++)
246 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
248 alt_om
= dec_om
= cfg
.dec_om
;
249 alt_wnext
= wrapnext
= alt_ins
= insert
= FALSE
;
250 alt_wrap
= wrap
= cfg
.wrap_mode
;
252 cset_attr
[0] = cset_attr
[1] = ATTR_ASCII
;
256 save_attr
= curr_attr
= ATTR_DEFAULT
;
257 term_editing
= term_echoing
= FALSE
;
258 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
259 app_cursor_keys
= cfg
.app_cursor
;
260 app_keypad_keys
= cfg
.app_keypad
;
262 blink_is_real
= cfg
.blinktext
;
263 erase_char
= ERASE_CHAR
;
267 for (i
= 0; i
< 256; i
++)
268 wordness
[i
] = cfg
.wordness
[i
];
272 erase_lots (FALSE
, TRUE
, TRUE
);
274 erase_lots (FALSE
, TRUE
, TRUE
);
279 * Force a screen update.
281 void term_update(void) {
285 if ( (seen_key_event
&& (cfg
.scroll_on_key
)) ||
286 (seen_disp_event
&& (cfg
.scroll_on_disp
)) ) {
287 disptop
= 0; /* return to main screen */
288 seen_disp_event
= seen_key_event
= 0;
291 do_paint (ctx
, TRUE
);
292 sys_cursor(curs
.x
, curs
.y
- disptop
);
298 * Same as power_on(), but an external function.
300 void term_pwron(void) {
309 * Clear the scrollback.
311 void term_clrsb(void) {
314 while ((line
= delpos234(scrollback
, 0)) != NULL
) {
321 * Initialise the terminal.
323 void term_init(void) {
324 screen
= alt_screen
= scrollback
= NULL
;
326 disptext
= wanttext
= NULL
;
332 beephead
= beeptail
= NULL
;
335 beep_overloaded
= FALSE
;
339 * Set up the terminal for a given size.
341 void term_size(int newrows
, int newcols
, int newsavelines
) {
342 tree234
*newsb
, *newscreen
, *newalt
;
343 unsigned long *newdisp
, *newwant
, *oldline
, *line
;
346 int save_alt_which
= alt_which
;
348 if (newrows
== rows
&& newcols
== cols
&& newsavelines
== savelines
)
349 return; /* nothing to do */
355 alt_b
= marg_b
= newrows
- 1;
358 scrollback
= newtree234(NULL
);
359 screen
= newtree234(NULL
);
364 * Resize the screen and scrollback. We only need to shift
365 * lines around within our data structures, because lineptr()
366 * will take care of resizing each individual line if
369 * - If the new screen and the old screen differ in length, we
370 * must shunt some lines in from the scrollback or out to
373 * - If doing that fails to provide us with enough material to
374 * fill the new screen (i.e. the number of rows needed in
375 * the new screen exceeds the total number in the previous
376 * screen+scrollback), we must invent some blank lines to
379 * - Then, if the new scrollback length is less than the
380 * amount of scrollback we actually have, we must throw some
383 sblen
= count234(scrollback
);
384 debug(("resizing rows=%d sblen=%d newrows=%d newsb=%d\n",
385 rows
, sblen
, newrows
, newsavelines
));
386 if (newrows
> rows
) {
387 for (i
= rows
; i
< newrows
; i
++) {
389 line
= delpos234(scrollback
, --sblen
);
391 line
= smalloc(TSIZE
* (newcols
+2));
393 for (j
= 0; j
<= newcols
; j
++)
394 line
[j
+1] = ERASE_CHAR
;
396 addpos234(screen
, line
, 0);
398 } else if (newrows
< rows
) {
399 for (i
= newrows
; i
< rows
; i
++) {
400 line
= delpos234(screen
, 0);
401 addpos234(scrollback
, line
, sblen
++);
404 assert(count234(screen
) == newrows
);
405 while (sblen
> newsavelines
) {
406 line
= delpos234(scrollback
, 0);
410 assert(count234(scrollback
) <= newsavelines
);
411 debug(("screen:%d scrollback:%d\n", count234(screen
), count234(scrollback
)));
414 newdisp
= smalloc (newrows
*(newcols
+1)*TSIZE
);
415 for (i
=0; i
<newrows
*(newcols
+1); i
++)
416 newdisp
[i
] = ATTR_INVALID
;
420 newwant
= smalloc (newrows
*(newcols
+1)*TSIZE
);
421 for (i
=0; i
<newrows
*(newcols
+1); i
++)
422 newwant
[i
] = ATTR_INVALID
;
426 newalt
= newtree234(NULL
);
427 for (i
=0; i
<newrows
; i
++) {
428 line
= smalloc(TSIZE
* (newcols
+2));
430 for (j
= 0; j
<= newcols
; j
++)
431 line
[j
+1] = erase_char
;
432 addpos234(newalt
, line
, i
);
435 while (NULL
!= (line
= delpos234(alt_screen
, 0)))
437 freetree234(alt_screen
);
442 selspace
= smalloc ( (newrows
+newsavelines
) * (newcols
+sizeof(sel_nl
)) );
444 tabs
= srealloc (tabs
, newcols
*sizeof(*tabs
));
447 for (i
= (cols
> 0 ? cols
: 0); i
< newcols
; i
++)
448 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
452 curs
.y
+= newrows
- rows
;
455 if (curs
.y
>= newrows
)
457 if (curs
.x
>= newcols
)
460 wrapnext
= alt_wnext
= FALSE
;
464 savelines
= newsavelines
;
467 swap_screen(save_alt_which
);
476 static void swap_screen (int which
) {
480 if (which
== alt_which
)
485 ttr
= alt_screen
; alt_screen
= screen
; screen
= ttr
;
486 t
= curs
.x
; curs
.x
= alt_x
; alt_x
= t
;
487 t
= curs
.y
; curs
.y
= alt_y
; alt_y
= t
;
488 t
= marg_t
; marg_t
= alt_t
; alt_t
= t
;
489 t
= marg_b
; marg_b
= alt_b
; alt_b
= t
;
490 t
= dec_om
; dec_om
= alt_om
; alt_om
= t
;
491 t
= wrap
; wrap
= alt_wrap
; alt_wrap
= t
;
492 t
= wrapnext
; wrapnext
= alt_wnext
; alt_wnext
= t
;
493 t
= insert
; insert
= alt_ins
; alt_ins
= t
;
494 t
= cset
; cset
= alt_cset
; alt_cset
= t
;
500 * Update the scroll bar.
502 static void update_sbar(void) {
505 nscroll
= count234(scrollback
);
507 set_sbar (nscroll
+ rows
, nscroll
+ disptop
, rows
);
511 * Check whether the region bounded by the two pointers intersects
512 * the scroll region, and de-select the on-screen selection if so.
514 static void check_selection (pos from
, pos to
) {
515 if (poslt(from
, selend
) && poslt(selstart
, to
))
520 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
521 * for backward.) `sb' is TRUE if the scrolling is permitted to
522 * affect the scrollback buffer.
524 * NB this function invalidates all pointers into lines of the
525 * screen data structures. In particular, you MUST call fix_cpos
526 * after calling scroll() and before doing anything else that
527 * uses the cpos shortcut pointer.
529 static void scroll (int topline
, int botline
, int lines
, int sb
) {
530 unsigned long *line
, *line2
;
533 if (topline
!= 0 || alt_which
!= 0)
538 line
= delpos234(screen
, botline
);
539 for (i
= 0; i
< cols
; i
++)
540 line
[i
+1] = erase_char
;
542 addpos234(screen
, line
, topline
);
544 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
546 if (selstart
.y
> botline
) {
547 selstart
.y
= botline
;
551 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
553 if (selend
.y
> botline
) {
563 line
= delpos234(screen
, topline
);
564 if (sb
&& savelines
> 0) {
565 int sblen
= count234(scrollback
);
567 * We must add this line to the scrollback. We'll
568 * remove a line from the top of the scrollback to
569 * replace it, or allocate a new one if the
570 * scrollback isn't full.
572 if (sblen
== savelines
) {
573 sblen
--, line2
= delpos234(scrollback
, 0);
575 line2
= smalloc(TSIZE
* (cols
+2));
578 addpos234(scrollback
, line
, sblen
);
581 for (i
= 0; i
< cols
; i
++)
582 line
[i
+1] = erase_char
;
584 addpos234(screen
, line
, botline
);
586 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
588 if (selstart
.y
< topline
) {
589 selstart
.y
= topline
;
593 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
595 if (selend
.y
< topline
) {
607 * Move the cursor to a given position, clipping at boundaries. We
608 * may or may not want to clip at the scroll margin: marg_clip is 0
609 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
610 * even _being_ outside the margins.
612 static void move (int x
, int y
, int marg_clip
) {
618 if ((curs
.y
>= marg_t
|| marg_clip
== 2) && y
< marg_t
)
620 if ((curs
.y
<= marg_b
|| marg_clip
== 2) && y
> marg_b
)
634 * Save or restore the cursor and SGR mode.
636 static void save_cursor(int save
) {
639 save_attr
= curr_attr
;
641 save_csattr
= cset_attr
[cset
];
644 /* Make sure the window hasn't shrunk since the save */
645 if (curs
.x
>= cols
) curs
.x
= cols
-1;
646 if (curs
.y
>= rows
) curs
.y
= rows
-1;
648 curr_attr
= save_attr
;
650 cset_attr
[cset
] = save_csattr
;
652 if (use_bce
) erase_char
= (' ' |(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
657 * Erase a large portion of the screen: the whole screen, or the
658 * whole line, or parts thereof.
660 static void erase_lots (int line_only
, int from_begin
, int to_end
) {
663 unsigned long *ldata
;
684 check_selection (start
, end
);
686 /* Clear screen also forces a full window redraw, just in case. */
687 if (start
.y
== 0 && start
.x
== 0 && end
.y
== rows
)
690 ldata
= lineptr(start
.y
);
691 while (poslt(start
, end
)) {
692 if (start
.y
== cols
&& !erase_lattr
)
693 ldata
[start
.x
] &= ~ATTR_WRAPPED
;
695 ldata
[start
.x
] = erase_char
;
696 if (incpos(start
) && start
.y
< rows
)
697 ldata
= lineptr(start
.y
);
702 * Insert or delete characters within the current line. n is +ve if
703 * insertion is desired, and -ve for deletion.
705 static void insch (int n
) {
706 int dir
= (n
< 0 ?
-1 : +1);
709 unsigned long *ldata
;
711 n
= (n
< 0 ?
-n
: n
);
712 if (n
> cols
- curs
.x
)
714 m
= cols
- curs
.x
- n
;
716 cursplus
.x
= curs
.x
+ n
;
717 check_selection (curs
, cursplus
);
718 ldata
= lineptr(curs
.y
);
720 memmove (ldata
+ curs
.x
, ldata
+ curs
.x
+ n
, m
*TSIZE
);
722 ldata
[curs
.x
+ m
++] = erase_char
;
724 memmove (ldata
+ curs
.x
+ n
, ldata
+ curs
.x
, m
*TSIZE
);
726 ldata
[curs
.x
+ n
] = erase_char
;
731 * Toggle terminal mode `mode' to state `state'. (`query' indicates
732 * whether the mode is a DEC private one or a normal one.)
734 static void toggle_mode (int mode
, int query
, int state
) {
736 if (query
) switch (mode
) {
737 case 1: /* application cursor keys */
738 app_cursor_keys
= state
;
740 case 2: /* VT52 mode */
743 case 3: /* 80/132 columns */
745 request_resize (state ?
132 : 80, rows
, 1);
748 case 5: /* reverse video */
750 * Toggle reverse video. If we receive an OFF within the
751 * visual bell timeout period after an ON, we trigger an
752 * effective visual bell, so that ESC[?5hESC[?5l will
753 * always be an actually _visible_ visual bell.
755 ticks
= GetTickCount();
756 if (rvideo
&& !state
&& /* we're turning it off */
757 ticks
< rvbell_timeout
) { /* and it's not long since it was turned on */
758 in_vbell
= TRUE
; /* we may clear rvideo but we set in_vbell */
759 if (vbell_timeout
< rvbell_timeout
) /* don't move vbell end forward */
760 vbell_timeout
= rvbell_timeout
; /* vbell end is at least then */
761 } else if (!rvideo
&& state
) {
762 /* This is an ON, so we notice the time and save it. */
763 rvbell_timeout
= ticks
+ VBELL_TIMEOUT
;
766 seen_disp_event
= TRUE
;
767 if (state
) term_update();
769 case 6: /* DEC origin mode */
772 case 7: /* auto wrap */
775 case 8: /* auto key repeat */
778 case 10: /* set local edit mode */
779 term_editing
= state
;
780 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
782 case 25: /* enable/disable cursor */
783 compatibility2(OTHER
,VT220
);
785 seen_disp_event
= TRUE
;
787 case 47: /* alternate screen */
788 compatibility(OTHER
);
793 } else switch (mode
) {
794 case 4: /* set insert mode */
795 compatibility(VT102
);
798 case 12: /* set echo mode */
799 term_echoing
= !state
;
800 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
802 case 20: /* Return sends ... */
803 cr_lf_return
= state
;
809 * Process an OSC sequence: set window title or icon name.
811 static void do_osc(void) {
814 wordness
[(unsigned char)osc_string
[osc_strlen
]] = esc_args
[0];
816 osc_string
[osc_strlen
] = '\0';
817 switch (esc_args
[0]) {
820 set_icon (osc_string
);
821 if (esc_args
[0] == 1)
823 /* fall through: parameter 0 means set both */
826 set_title (osc_string
);
833 * Remove everything currently in `inbuf' and stick it up on the
834 * in-memory display. There's a big state machine in here to
835 * process escape sequences...
837 void term_out(void) {
840 for(inbuf_reap
= 0; inbuf_reap
< inbuf_head
; inbuf_reap
++)
842 c
= inbuf
[inbuf_reap
];
845 * Optionally log the session traffic to a file. Useful for
846 * debugging and possibly also useful for actual logging.
848 logtraffic((unsigned char)c
, LGTYP_DEBUG
);
850 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
851 * be able to display 8-bit characters, but I'll let that go 'cause
854 if( ( (c
&0x60) == 0 || c
== '\177') &&
855 termstate
< DO_CTRLS
&&
856 ( (c
&0x80) == 0 || has_compat(VT220
))) {
858 case '\005': /* terminal type query */
859 /* Strictly speaking this is VT100 but a VT100 defaults to
860 * no response. Other terminals respond at their option.
862 * Don't put a CR in the default string as this tends to
863 * upset some weird software.
865 * An xterm returns "xterm" (5 characters)
867 compatibility(ANSIMIN
);
869 char abuf
[256], *s
, *d
;
871 for(s
=cfg
.answerback
, d
=abuf
; *s
; s
++) {
874 if (*s
>= 'a' && *s
<= 'z')
875 *d
++ = (*s
- ('a'-1));
876 else if ((*s
>='@' && *s
<='_') ||
877 *s
== '?' || (*s
&0x80))
883 else if (*s
== '^') {
887 *d
++ = xlat_kbd2tty((unsigned char)*s
);
889 ldisc_send (abuf
, d
-abuf
);
894 struct beeptime
*newbeep
;
897 ticks
= GetTickCount();
899 if (!beep_overloaded
) {
900 newbeep
= smalloc(sizeof(struct beeptime
));
901 newbeep
->ticks
= ticks
;
902 newbeep
->next
= NULL
;
906 beeptail
->next
= newbeep
;
912 * Throw out any beeps that happened more than
916 beephead
->ticks
< ticks
- cfg
.bellovl_t
*1000) {
917 struct beeptime
*tmp
= beephead
;
918 beephead
= tmp
->next
;
925 if (cfg
.bellovl
&& beep_overloaded
&&
926 ticks
-lastbeep
>= cfg
.bellovl_s
* 1000) {
928 * If we're currently overloaded and the
929 * last beep was more than s seconds ago,
930 * leave overload mode.
932 beep_overloaded
= FALSE
;
933 } else if (cfg
.bellovl
&& !beep_overloaded
&&
934 nbeeps
>= cfg
.bellovl_n
) {
936 * Now, if we have n or more beeps
937 * remaining in the queue, go into overload
940 beep_overloaded
= TRUE
;
945 * Perform an actual beep if we're not overloaded.
947 if ((!cfg
.bellovl
|| !beep_overloaded
) && cfg
.beep
!= 0) {
950 else if(cfg
.beep
== 2) {
952 vbell_timeout
= ticks
+ VBELL_TIMEOUT
;
960 if (curs
.x
== 0 && curs
.y
== 0)
962 else if (curs
.x
== 0 && curs
.y
> 0)
963 curs
.x
= cols
-1, curs
.y
--;
969 seen_disp_event
= TRUE
;
972 compatibility(VT100
);
976 compatibility(VT100
);
981 termstate
= VT52_ESC
;
983 compatibility(ANSIMIN
);
984 termstate
= SEEN_ESC
;
988 compatibility(VT220
);
989 termstate
= SEEN_CSI
;
991 esc_args
[0] = ARG_DEFAULT
;
995 compatibility(VT220
);
996 termstate
= SEEN_OSC
;
1003 seen_disp_event
= TRUE
;
1005 logtraffic((unsigned char)c
,LGTYP_ASCII
);
1009 compatibility(VT100
);
1011 if (curs
.y
== marg_b
)
1012 scroll (marg_t
, marg_b
, 1, TRUE
);
1013 else if (curs
.y
< rows
-1)
1019 seen_disp_event
= 1;
1021 logtraffic((unsigned char)c
,LGTYP_ASCII
);
1025 pos old_curs
= curs
;
1026 unsigned long *ldata
= lineptr(curs
.y
);
1030 } while (curs
.x
< cols
-1 && !tabs
[curs
.x
]);
1032 if ((ldata
[cols
] & LATTR_MODE
) != LATTR_NORM
)
1034 if (curs
.x
>= cols
/2)
1044 check_selection (old_curs
, curs
);
1046 seen_disp_event
= TRUE
;
1048 case '\177': /* Destructive backspace
1049 This does nothing on a real VT100 */
1050 compatibility(OTHER
);
1051 if (curs
.x
&& !wrapnext
) curs
.x
--;
1054 *cpos
= (' ' | curr_attr
| ATTR_ASCII
);
1058 else switch (termstate
) {
1060 /* Only graphic characters get this far, ctrls are stripped above */
1061 if (wrapnext
&& wrap
) {
1062 cpos
[1] |= ATTR_WRAPPED
;
1063 if (curs
.y
== marg_b
)
1064 scroll (marg_t
, marg_b
, 1, TRUE
);
1065 else if (curs
.y
< rows
-1)
1073 if (selstate
!= NO_SELECTION
) {
1074 pos cursplus
= curs
;
1076 check_selection (curs
, cursplus
);
1078 switch (cset_attr
[cset
]) {
1080 * Linedraw characters are different from 'ESC ( B'
1081 * only for a small range. For ones outside that
1082 * range, make sure we use the same font as well as
1083 * the same encoding.
1086 if (c
<0x5f || c
>0x7F)
1087 *cpos
++ = xlat_tty2scr((unsigned char)c
) | curr_attr
|
1090 *cpos
++ = ' ' | curr_attr
| ATTR_ASCII
;
1092 *cpos
++ = ((unsigned char)c
) | curr_attr
| ATTR_LINEDRW
;
1095 /* If UK-ASCII, make the '#' a LineDraw Pound */
1097 *cpos
++ = '}' | curr_attr
| ATTR_LINEDRW
;
1102 *cpos
= xlat_tty2scr((unsigned char)c
) | curr_attr
|
1103 (c
<= 0x7F ? cset_attr
[cset
] : ATTR_ASCII
);
1104 logtraffic((unsigned char)c
, LGTYP_ASCII
);
1109 if (curs
.x
== cols
) {
1114 seen_disp_event
= 1;
1118 termstate
= TOPLEVEL
;
1122 * This state is virtually identical to SEEN_ESC, with the
1123 * exception that we have an OSC sequence in the pipeline,
1124 * and _if_ we see a backslash, we process it.
1128 termstate
= TOPLEVEL
;
1131 /* else fall through */
1133 termstate
= TOPLEVEL
;
1135 case ' ': /* some weird sequence? */
1136 compatibility(VT220
);
1137 termstate
= IGNORE_NEXT
;
1139 case '[': /* enter CSI mode */
1140 termstate
= SEEN_CSI
;
1142 esc_args
[0] = ARG_DEFAULT
;
1145 case ']': /* xterm escape sequences */
1146 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1147 compatibility(OTHER
);
1148 termstate
= SEEN_OSC
;
1151 case '(': /* should set GL */
1152 compatibility(VT100
);
1155 case ')': /* should set GR */
1156 compatibility(VT100
);
1159 case '7': /* save cursor */
1160 compatibility(VT100
);
1163 case '8': /* restore cursor */
1164 compatibility(VT100
);
1165 save_cursor (FALSE
);
1166 seen_disp_event
= TRUE
;
1169 compatibility(VT100
);
1170 app_keypad_keys
= TRUE
;
1173 compatibility(VT100
);
1174 app_keypad_keys
= FALSE
;
1176 case 'D': /* exactly equivalent to LF */
1177 compatibility(VT100
);
1178 if (curs
.y
== marg_b
)
1179 scroll (marg_t
, marg_b
, 1, TRUE
);
1180 else if (curs
.y
< rows
-1)
1184 seen_disp_event
= TRUE
;
1186 case 'E': /* exactly equivalent to CR-LF */
1187 compatibility(VT100
);
1189 if (curs
.y
== marg_b
)
1190 scroll (marg_t
, marg_b
, 1, TRUE
);
1191 else if (curs
.y
< rows
-1)
1195 seen_disp_event
= TRUE
;
1197 case 'M': /* reverse index - backwards LF */
1198 compatibility(VT100
);
1199 if (curs
.y
== marg_t
)
1200 scroll (marg_t
, marg_b
, -1, TRUE
);
1201 else if (curs
.y
> 0)
1205 seen_disp_event
= TRUE
;
1207 case 'Z': /* terminal type query */
1208 compatibility(VT100
);
1209 ldisc_send (id_string
, strlen(id_string
));
1211 case 'c': /* restore power-on settings */
1212 compatibility(VT100
);
1215 request_resize (80, rows
, 1);
1220 seen_disp_event
= TRUE
;
1222 case '#': /* ESC # 8 fills screen with Es :-) */
1223 compatibility(VT100
);
1224 termstate
= SEEN_ESCHASH
;
1226 case 'H': /* set a tab */
1227 compatibility(VT100
);
1228 tabs
[curs
.x
] = TRUE
;
1233 termstate
= TOPLEVEL
; /* default */
1236 if (esc_nargs
<= ARGS_MAX
) {
1237 if (esc_args
[esc_nargs
-1] == ARG_DEFAULT
)
1238 esc_args
[esc_nargs
-1] = 0;
1239 esc_args
[esc_nargs
-1] =
1240 10 * esc_args
[esc_nargs
-1] + c
- '0';
1242 termstate
= SEEN_CSI
;
1246 if (++esc_nargs
<= ARGS_MAX
)
1247 esc_args
[esc_nargs
-1] = ARG_DEFAULT
;
1248 termstate
= SEEN_CSI
;
1252 if( esc_query
) esc_query
= -1;
1253 else if( c
== '?' ) esc_query
= TRUE
;
1255 termstate
= SEEN_CSI
;
1257 else switch (ANSI(c
,esc_query
)) {
1258 case 'A': /* move up N lines */
1259 move (curs
.x
, curs
.y
- def(esc_args
[0], 1), 1);
1260 seen_disp_event
= TRUE
;
1262 case 'e': /* move down N lines */
1263 compatibility(ANSI
);
1265 move (curs
.x
, curs
.y
+ def(esc_args
[0], 1), 1);
1266 seen_disp_event
= TRUE
;
1268 case 'a': /* move right N cols */
1269 compatibility(ANSI
);
1271 move (curs
.x
+ def(esc_args
[0], 1), curs
.y
, 1);
1272 seen_disp_event
= TRUE
;
1274 case 'D': /* move left N cols */
1275 move (curs
.x
- def(esc_args
[0], 1), curs
.y
, 1);
1276 seen_disp_event
= TRUE
;
1278 case 'E': /* move down N lines and CR */
1279 compatibility(ANSI
);
1280 move (0, curs
.y
+ def(esc_args
[0], 1), 1);
1281 seen_disp_event
= TRUE
;
1283 case 'F': /* move up N lines and CR */
1284 compatibility(ANSI
);
1285 move (0, curs
.y
- def(esc_args
[0], 1), 1);
1286 seen_disp_event
= TRUE
;
1288 case 'G': case '`': /* set horizontal posn */
1289 compatibility(ANSI
);
1290 move (def(esc_args
[0], 1) - 1, curs
.y
, 0);
1291 seen_disp_event
= TRUE
;
1293 case 'd': /* set vertical posn */
1294 compatibility(ANSI
);
1295 move (curs
.x
, (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1297 seen_disp_event
= TRUE
;
1299 case 'H': case 'f': /* set horz and vert posns at once */
1301 esc_args
[1] = ARG_DEFAULT
;
1302 move (def(esc_args
[1], 1) - 1,
1303 (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1305 seen_disp_event
= TRUE
;
1307 case 'J': /* erase screen or parts of it */
1309 unsigned int i
= def(esc_args
[0], 0) + 1;
1312 erase_lots(FALSE
, !!(i
& 2), !!(i
& 1));
1315 seen_disp_event
= TRUE
;
1317 case 'K': /* erase line or parts of it */
1319 unsigned int i
= def(esc_args
[0], 0) + 1;
1322 erase_lots(TRUE
, !!(i
& 2), !!(i
& 1));
1324 seen_disp_event
= TRUE
;
1326 case 'L': /* insert lines */
1327 compatibility(VT102
);
1328 if (curs
.y
<= marg_b
)
1329 scroll (curs
.y
, marg_b
, -def(esc_args
[0], 1), FALSE
);
1331 seen_disp_event
= TRUE
;
1333 case 'M': /* delete lines */
1334 compatibility(VT102
);
1335 if (curs
.y
<= marg_b
)
1336 scroll (curs
.y
, marg_b
, def(esc_args
[0], 1), TRUE
);
1338 seen_disp_event
= TRUE
;
1340 case '@': /* insert chars */
1341 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1342 compatibility(VT102
);
1343 insch (def(esc_args
[0], 1));
1344 seen_disp_event
= TRUE
;
1346 case 'P': /* delete chars */
1347 compatibility(VT102
);
1348 insch (-def(esc_args
[0], 1));
1349 seen_disp_event
= TRUE
;
1351 case 'c': /* terminal type query */
1352 compatibility(VT100
);
1353 /* This is the response for a VT102 */
1354 ldisc_send (id_string
, strlen(id_string
));
1356 case 'n': /* cursor position query */
1357 if (esc_args
[0] == 6) {
1359 sprintf (buf
, "\033[%d;%dR", curs
.y
+ 1, curs
.x
+ 1);
1360 ldisc_send (buf
, strlen(buf
));
1362 else if (esc_args
[0] == 5) {
1363 ldisc_send ("\033[0n", 4);
1366 case 'h': /* toggle modes to high */
1368 compatibility(VT100
);
1371 for (i
=0; i
<esc_nargs
; i
++)
1372 toggle_mode (esc_args
[i
], esc_query
, TRUE
);
1375 case 'l': /* toggle modes to low */
1377 compatibility(VT100
);
1380 for (i
=0; i
<esc_nargs
; i
++)
1381 toggle_mode (esc_args
[i
], esc_query
, FALSE
);
1384 case 'g': /* clear tabs */
1385 compatibility(VT100
);
1386 if (esc_nargs
== 1) {
1387 if (esc_args
[0] == 0) {
1388 tabs
[curs
.x
] = FALSE
;
1389 } else if (esc_args
[0] == 3) {
1391 for (i
= 0; i
< cols
; i
++)
1396 case 'r': /* set scroll margins */
1397 compatibility(VT100
);
1398 if (esc_nargs
<= 2) {
1400 top
= def(esc_args
[0], 1) - 1;
1401 bot
= (esc_nargs
<= 1 || esc_args
[1] == 0 ? rows
:
1402 def(esc_args
[1], rows
)) - 1;
1405 /* VTTEST Bug 9 - if region is less than 2 lines
1406 * don't change region.
1413 * I used to think the cursor should be
1414 * placed at the top of the newly marginned
1415 * area. Apparently not: VMS TPU falls over
1418 * Well actually it should for Origin mode - RDB
1420 curs
.y
= (dec_om ? marg_t
: 0);
1422 seen_disp_event
= TRUE
;
1426 case 'm': /* set graphics rendition */
1429 * A VT100 without the AVO only had one attribute, either
1430 * underline or reverse video depending on the cursor type,
1431 * this was selected by CSI 7m.
1434 * This is DIM on the VT100-AVO and VT102
1436 * This is BLINK on the VT100-AVO and VT102+
1438 * This is INVIS on the VT100-AVO and VT102
1440 * This like 22 disables BOLD, DIM and INVIS
1442 * The ANSI colours appear on any terminal that has colour
1443 * (obviously) but the interaction between sgr0 and the
1444 * colours varies but is usually related to the background
1445 * colour erase item.
1446 * The interaction between colour attributes and the mono
1447 * ones is also very implementation dependent.
1449 * The 39 and 49 attributes are likely to be unimplemented.
1452 for (i
=0; i
<esc_nargs
; i
++) {
1453 switch (def(esc_args
[i
], 0)) {
1454 case 0: /* restore defaults */
1455 curr_attr
= ATTR_DEFAULT
; break;
1456 case 1: /* enable bold */
1457 compatibility(VT100AVO
);
1458 curr_attr
|= ATTR_BOLD
; break;
1459 case 21: /* (enable double underline) */
1460 compatibility(OTHER
);
1461 case 4: /* enable underline */
1462 compatibility(VT100AVO
);
1463 curr_attr
|= ATTR_UNDER
; break;
1464 case 5: /* enable blink */
1465 compatibility(VT100AVO
);
1466 curr_attr
|= ATTR_BLINK
; break;
1467 case 7: /* enable reverse video */
1468 curr_attr
|= ATTR_REVERSE
; break;
1469 case 22: /* disable bold */
1470 compatibility2(OTHER
,VT220
);
1471 curr_attr
&= ~ATTR_BOLD
; break;
1472 case 24: /* disable underline */
1473 compatibility2(OTHER
,VT220
);
1474 curr_attr
&= ~ATTR_UNDER
; break;
1475 case 25: /* disable blink */
1476 compatibility2(OTHER
,VT220
);
1477 curr_attr
&= ~ATTR_BLINK
; break;
1478 case 27: /* disable reverse video */
1479 compatibility2(OTHER
,VT220
);
1480 curr_attr
&= ~ATTR_REVERSE
; break;
1481 case 30: case 31: case 32: case 33:
1482 case 34: case 35: case 36: case 37:
1484 curr_attr
&= ~ATTR_FGMASK
;
1485 curr_attr
|= (esc_args
[i
] - 30) << ATTR_FGSHIFT
;
1487 case 39: /* default-foreground */
1488 curr_attr
&= ~ATTR_FGMASK
;
1489 curr_attr
|= ATTR_DEFFG
;
1491 case 40: case 41: case 42: case 43:
1492 case 44: case 45: case 46: case 47:
1494 curr_attr
&= ~ATTR_BGMASK
;
1495 curr_attr
|= (esc_args
[i
] - 40) << ATTR_BGSHIFT
;
1497 case 49: /* default-background */
1498 curr_attr
&= ~ATTR_BGMASK
;
1499 curr_attr
|= ATTR_DEFBG
;
1506 (curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
|ATTR_BLINK
))
1510 case 's': /* save cursor */
1513 case 'u': /* restore cursor */
1514 save_cursor (FALSE
);
1515 seen_disp_event
= TRUE
;
1517 case 't': /* set page size - ie window height */
1519 * VT340/VT420 sequence DECSLPP, DEC only allows values
1520 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1521 * illegal values (eg first arg 1..9) for window changing
1524 compatibility(VT340TEXT
);
1525 if (esc_nargs
<=1 && (esc_args
[0]<1 || esc_args
[0]>=24)) {
1526 request_resize (cols
, def(esc_args
[0], 24), 0);
1530 case ANSI('|', '*'):
1531 /* VT420 sequence DECSNLS
1532 * Set number of lines on screen
1533 * VT420 uses VGA like hardware and can support any size in
1534 * reasonable range (24..49 AIUI) with no default specified.
1536 compatibility(VT420
);
1537 if (esc_nargs
==1 && esc_args
[0]>0) {
1538 request_resize (cols
, def(esc_args
[0], cfg
.height
), 0);
1542 case ANSI('|', '$'):
1543 /* VT340/VT420 sequence DECSCPP
1544 * Set number of columns per page
1545 * Docs imply range is only 80 or 132, but I'll allow any.
1547 compatibility(VT340TEXT
);
1549 request_resize (def(esc_args
[0], cfg
.width
), rows
, 0);
1553 case 'X': /* write N spaces w/o moving cursor */
1554 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1555 compatibility(ANSIMIN
);
1557 int n
= def(esc_args
[0], 1);
1559 unsigned long *p
= cpos
;
1560 if (n
> cols
- curs
.x
)
1564 check_selection (curs
, cursplus
);
1567 seen_disp_event
= TRUE
;
1570 case 'x': /* report terminal characteristics */
1571 compatibility(VT100
);
1574 int i
= def(esc_args
[0], 0);
1575 if (i
== 0 || i
== 1) {
1576 strcpy (buf
, "\033[2;1;1;112;112;1;0x");
1578 ldisc_send (buf
, 20);
1583 compatibility(OTHER
);
1584 use_bce
= (esc_args
[0]<=0);
1585 erase_char
= ERASE_CHAR
;
1587 erase_char
= (' '|(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
1590 compatibility(OTHER
);
1591 blink_is_real
= (esc_args
[0]>=1);
1594 /* Allow the host to make this emulator a 'perfect' VT102.
1595 * This first appeared in the VT220, but we do need to get
1596 * back to PuTTY mode so I won't check it.
1598 * The arg in 40..42 are a PuTTY extension.
1599 * The 2nd arg, 8bit vs 7bit is not checked.
1601 * Setting VT102 mode should also change the Fkeys to
1602 * generate PF* codes as a real VT102 has no Fkeys.
1603 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1606 * Note ESC c will NOT change this!
1609 switch (esc_args
[0]) {
1610 case 61: compatibility_level
&= ~TM_VTXXX
;
1611 compatibility_level
|= TM_VT102
; break;
1612 case 62: compatibility_level
&= ~TM_VTXXX
;
1613 compatibility_level
|= TM_VT220
; break;
1615 default: if( esc_args
[0] > 60 && esc_args
[0] < 70 )
1616 compatibility_level
|= TM_VTXXX
;
1619 case 40: compatibility_level
&= TM_VTXXX
; break;
1620 case 41: compatibility_level
= TM_PUTTY
; break;
1621 case 42: compatibility_level
= TM_SCOANSI
; break;
1624 compatibility_level
= TM_PUTTY
; break;
1628 /* Change the response to CSI c */
1629 if (esc_args
[0] == 50) {
1632 strcpy(id_string
, "\033[?");
1633 for (i
=1; i
<esc_nargs
; i
++) {
1634 if (i
!=1) strcat(id_string
, ";");
1635 sprintf(lbuf
, "%d", esc_args
[i
]);
1636 strcat(id_string
, lbuf
);
1638 strcat(id_string
, "c");
1642 /* Is this a good idea ?
1643 * Well we should do a soft reset at this point ...
1645 if (!has_compat(VT420
) && has_compat(VT100
)) {
1646 if (reset_132
) request_resize (132, 24, 1);
1647 else request_resize ( 80, 24, 1);
1655 /* VT100 only here, checked above */
1658 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_GBCHR
;
1661 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_LINEDRW
;
1664 default: /* specifically, 'B' */
1665 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_ASCII
;
1668 if( !has_compat(VT220
) || c
!= '%' )
1669 termstate
= TOPLEVEL
;
1674 case 'P': /* Linux palette sequence */
1675 termstate
= SEEN_OSC_P
;
1678 case 'R': /* Linux palette reset */
1681 termstate
= TOPLEVEL
;
1683 case 'W': /* word-set */
1684 termstate
= SEEN_OSC_W
;
1687 case '0': case '1': case '2': case '3': case '4':
1688 case '5': case '6': case '7': case '8': case '9':
1689 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1693 * Grotty hack to support xterm and DECterm title
1694 * sequences concurrently.
1696 if (esc_args
[0] == 2) {
1700 /* else fall through */
1702 termstate
= OSC_STRING
;
1708 * This OSC stuff is EVIL. It takes just one character to get into
1709 * sysline mode and it's not initially obvious how to get out.
1710 * So I've added CR and LF as string aborts.
1711 * This shouldn't effect compatibility as I believe embedded
1712 * control characters are supposed to be interpreted (maybe?)
1713 * and they don't display anything useful anyway.
1717 if (c
== '\n' || c
== '\r') {
1718 termstate
= TOPLEVEL
;
1719 } else if (c
== 0234 || c
== '\007' ) {
1721 * These characters terminate the string; ST and BEL
1722 * terminate the sequence and trigger instant
1723 * processing of it, whereas ESC goes back to SEEN_ESC
1724 * mode unless it is followed by \, in which case it is
1725 * synonymous with ST in the first place.
1728 termstate
= TOPLEVEL
;
1729 } else if (c
== '\033')
1730 termstate
= OSC_MAYBE_ST
;
1731 else if (osc_strlen
< OSC_STR_MAX
)
1732 osc_string
[osc_strlen
++] = c
;
1736 int max
= (osc_strlen
== 0 ?
21 : 16);
1738 if (c
>= '0' && c
<= '9')
1740 else if (c
>= 'A' && c
<= 'A'+max
-10)
1742 else if (c
>= 'a' && c
<= 'a'+max
-10)
1745 termstate
= TOPLEVEL
;
1746 osc_string
[osc_strlen
++] = val
;
1747 if (osc_strlen
>= 7) {
1748 palette_set (osc_string
[0],
1749 osc_string
[1] * 16 + osc_string
[2],
1750 osc_string
[3] * 16 + osc_string
[4],
1751 osc_string
[5] * 16 + osc_string
[6]);
1753 termstate
= TOPLEVEL
;
1759 case '0': case '1': case '2': case '3': case '4':
1760 case '5': case '6': case '7': case '8': case '9':
1761 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1764 termstate
= OSC_STRING
;
1770 unsigned long nlattr
;
1771 unsigned long *ldata
;
1777 for (i
= 0; i
< rows
; i
++) {
1779 for (j
= 0; j
< cols
; j
++)
1780 ldata
[j
] = ATTR_DEFAULT
| 'E';
1784 seen_disp_event
= TRUE
;
1785 scrtop
.x
= scrtop
.y
= 0;
1786 scrbot
.x
= 0; scrbot
.y
= rows
;
1787 check_selection (scrtop
, scrbot
);
1790 case '3': nlattr
= LATTR_TOP
; goto lattr_common
;
1791 case '4': nlattr
= LATTR_BOT
; goto lattr_common
;
1792 case '5': nlattr
= LATTR_NORM
; goto lattr_common
;
1793 case '6': nlattr
= LATTR_WIDE
;
1796 ldata
= lineptr(curs
.y
);
1797 ldata
[cols
] &= ~LATTR_MODE
;
1798 ldata
[cols
] |= nlattr
;
1801 termstate
= TOPLEVEL
;
1804 termstate
= TOPLEVEL
;
1805 seen_disp_event
= TRUE
;
1808 move (curs
.x
, curs
.y
- 1, 1);
1811 move (curs
.x
, curs
.y
+ 1, 1);
1814 move (curs
.x
+ 1, curs
.y
, 1);
1817 move (curs
.x
- 1, curs
.y
, 1);
1820 cset_attr
[cset
=0] = ATTR_LINEDRW
;
1823 cset_attr
[cset
=0] = ATTR_ASCII
;
1830 scroll (0, rows
-1, -1, TRUE
);
1831 else if (curs
.y
> 0)
1837 erase_lots(FALSE
, FALSE
, TRUE
);
1841 erase_lots(TRUE
, FALSE
, TRUE
);
1844 /* XXX Print cursor line */
1847 /* XXX Start controller mode */
1850 /* XXX Stop controller mode */
1853 termstate
= VT52_Y1
;
1856 ldisc_send ("\033/Z", 3);
1859 app_keypad_keys
= TRUE
;
1862 app_keypad_keys
= FALSE
;
1865 /* XXX This should switch to VT100 mode not current or default
1866 * VT mode. But this will only have effect in a VT220+
1872 /* XXX Enter auto print mode */
1875 /* XXX Exit auto print mode */
1878 /* XXX Print screen */
1883 termstate
= VT52_Y2
;
1884 move(curs
.x
, c
-' ', 0);
1887 termstate
= TOPLEVEL
;
1888 move(c
-' ', curs
.y
, 0);
1891 if (selstate
!= NO_SELECTION
) {
1892 pos cursplus
= curs
;
1894 check_selection (curs
, cursplus
);
1901 * Compare two lines to determine whether they are sufficiently
1902 * alike to scroll-optimise one to the other. Return the degree of
1905 static int linecmp (unsigned long *a
, unsigned long *b
) {
1908 for (i
=n
=0; i
< cols
; i
++)
1909 n
+= (*a
++ == *b
++);
1914 * Given a context, update the window. Out of paranoia, we don't
1915 * allow WM_PAINT responses to do scrolling optimisations.
1917 static void do_paint (Context ctx
, int may_optimise
) {
1918 int i
, j
, start
, our_curs_y
;
1919 unsigned long attr
, rv
, cursor
;
1925 * Check the visual bell state.
1928 ticks
= GetTickCount();
1929 if (ticks
- vbell_timeout
>= 0)
1934 * screen array, disptop, scrtop,
1936 * cfg.blinkpc, blink_is_real, tblinker,
1937 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus
1941 if (blinker
|| !cfg
.blink_cur
)
1942 cursor
= ATTR_ACTCURS
;
1947 cursor
= ATTR_PASCURS
;
1949 cursor
|= ATTR_RIGHTCURS
;
1953 rv
= (!rvideo
^ !in_vbell ? ATTR_REVERSE
: 0);
1954 our_curs_y
= curs
.y
- disptop
;
1956 for (i
=0; i
<rows
; i
++) {
1957 unsigned long *ldata
;
1959 scrpos
.y
= i
+ disptop
;
1960 ldata
= lineptr(scrpos
.y
);
1961 lattr
= (ldata
[cols
] & LATTR_MODE
);
1962 for (j
=0; j
<=cols
; j
++) {
1963 unsigned long d
= ldata
[j
];
1964 int idx
= i
*(cols
+1)+j
;
1967 wanttext
[idx
] = lattr
| (((d
&~ ATTR_WRAPPED
) ^ rv
1968 ^ (posle(selstart
, scrpos
) &&
1969 poslt(scrpos
, selend
) ?
1970 ATTR_REVERSE
: 0)) |
1971 (i
==our_curs_y
&& j
==curs
.x ? cursor
: 0));
1972 if (blink_is_real
) {
1973 if (has_focus
&& tblinker
&& (wanttext
[idx
]&ATTR_BLINK
) )
1975 wanttext
[idx
] &= ATTR_MASK
;
1976 wanttext
[idx
] += ' ';
1978 wanttext
[idx
] &= ~ATTR_BLINK
;
1984 * We would perform scrolling optimisations in here, if they
1985 * didn't have a nasty tendency to cause the whole sodding
1986 * program to hang for a second at speed-critical moments.
1987 * We'll leave it well alone...
1990 for (i
=0; i
<rows
; i
++) {
1991 int idx
= i
*(cols
+1);
1992 int lattr
= (wanttext
[idx
+cols
] & LATTR_MODE
);
1994 for (j
=0; j
<=cols
; j
++,idx
++) {
1995 unsigned long t
= wanttext
[idx
];
1996 int needs_update
= (j
< cols
&& t
!= disptext
[idx
]);
1997 int keep_going
= (start
!= -1 && needs_update
&&
1998 (t
& ATTR_MASK
) == attr
&&
1999 j
-start
< sizeof(ch
));
2000 if (start
!= -1 && !keep_going
) {
2001 do_text (ctx
, start
, i
, ch
, j
-start
, attr
, lattr
);
2007 attr
= t
& ATTR_MASK
;
2009 ch
[j
-start
] = (char) (t
& CHAR_MASK
);
2017 * Flick the switch that says if blinking things should be shown or hidden.
2020 void term_blink(int flg
) {
2021 static long last_blink
= 0;
2022 static long last_tblink
= 0;
2023 long now
, blink_diff
;
2025 now
= GetTickCount();
2026 blink_diff
= now
-last_tblink
;
2028 /* Make sure the text blinks no more than 2Hz */
2029 if (blink_diff
<0 || blink_diff
>450)
2032 tblinker
= !tblinker
;
2041 blink_diff
= now
-last_blink
;
2043 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
2044 if (blink_diff
>=0 && blink_diff
<(long)GetCaretBlinkTime())
2052 * Invalidate the whole screen so it will be repainted in full.
2054 void term_invalidate(void) {
2057 for (i
=0; i
<rows
*(cols
+1); i
++)
2058 disptext
[i
] = ATTR_INVALID
;
2062 * Paint the window in response to a WM_PAINT message.
2064 void term_paint (Context ctx
, int l
, int t
, int r
, int b
) {
2065 int i
, j
, left
, top
, right
, bottom
;
2067 left
= l
/ font_width
;
2068 right
= (r
- 1) / font_width
;
2069 top
= t
/ font_height
;
2070 bottom
= (b
- 1) / font_height
;
2071 for (i
= top
; i
<= bottom
&& i
< rows
; i
++)
2073 if ( (disptext
[i
*(cols
+1)+cols
]&LATTR_MODE
) == LATTR_NORM
)
2074 for (j
= left
; j
<= right
&& j
< cols
; j
++)
2075 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
2077 for (j
= left
/2; j
<= right
/2+1 && j
< cols
; j
++)
2078 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
2081 /* This should happen soon enough, also for some reason it sometimes
2082 * fails to actually do anything when re-sizing ... painting the wrong
2084 do_paint (ctx, FALSE);
2089 * Attempt to scroll the scrollback. The second parameter gives the
2090 * position we want to scroll to; the first is +1 to denote that
2091 * this position is relative to the beginning of the scrollback, -1
2092 * to denote it is relative to the end, and 0 to denote that it is
2093 * relative to the current position.
2095 void term_scroll (int rel
, int where
) {
2096 int sbtop
= -count234(scrollback
);
2098 disptop
= (rel
< 0 ?
0 :
2099 rel
> 0 ? sbtop
: disptop
) + where
;
2100 if (disptop
< sbtop
)
2108 static void clipme(pos top
, pos bottom
, char *workbuf
) {
2109 char *wbptr
; /* where next char goes within workbuf */
2110 int wblen
= 0; /* workbuf len */
2111 int buflen
; /* amount of memory allocated to workbuf */
2113 if ( workbuf
!= NULL
) { /* user supplied buffer? */
2114 buflen
= -1; /* assume buffer passed in is big enough */
2115 wbptr
= workbuf
; /* start filling here */
2118 buflen
= 0; /* No data is available yet */
2120 while (poslt(top
, bottom
)) {
2122 unsigned long *ldata
= lineptr(top
.y
);
2128 if (!(ldata
[cols
] & ATTR_WRAPPED
)) {
2129 while ((ldata
[nlpos
.x
-1] & CHAR_MASK
) == 0x20 && poslt(top
, nlpos
))
2131 if (poslt(nlpos
, bottom
))
2134 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
2135 int ch
= (ldata
[top
.x
] & CHAR_MASK
);
2136 int set
= (ldata
[top
.x
] & CSET_MASK
);
2138 /* VT Specials -> ISO8859-1 for Cut&Paste */
2139 static const unsigned char poorman2
[] =
2140 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
2142 if (set
&& !cfg
.rawcnp
) {
2143 if (set
== ATTR_LINEDRW
&& ch
>= 0x60 && ch
< 0x7F) {
2145 if ((x
= poorman2
[2*(ch
-0x60)+1]) == ' ')
2147 ch
= (x
<<8) + poorman2
[2*(ch
-0x60)];
2152 if (cfg
.rawcnp
|| !!(ch
&0xE0)) {
2153 if ( wblen
== buflen
)
2155 workbuf
= srealloc(workbuf
, buflen
+= 100);
2156 wbptr
= workbuf
+ wblen
;
2159 *wbptr
++ = (unsigned char) ch
;
2167 for (i
=0; i
<sizeof(sel_nl
); i
++)
2169 if ( wblen
== buflen
)
2171 workbuf
= srealloc(workbuf
, buflen
+= 100);
2172 wbptr
= workbuf
+ wblen
;
2175 *wbptr
++ = sel_nl
[i
];
2181 write_clip (workbuf
, wblen
, FALSE
); /* transfer to clipboard */
2182 if ( buflen
> 0 ) /* indicates we allocated this buffer */
2186 void term_copyall (void) {
2188 top
.y
= -count234(scrollback
);
2190 clipme(top
, curs
, NULL
/* dynamic allocation */);
2194 * Spread the selection outwards according to the selection mode.
2196 static pos
sel_spread_half (pos p
, int dir
) {
2197 unsigned long *ldata
;
2200 ldata
= lineptr(p
.y
);
2205 * In this mode, every character is a separate unit, except
2206 * for runs of spaces at the end of a non-wrapping line.
2208 if (!(ldata
[cols
] & ATTR_WRAPPED
)) {
2209 unsigned long *q
= ldata
+cols
;
2210 while (q
> ldata
&& (q
[-1] & CHAR_MASK
) == 0x20)
2212 if (q
== ldata
+cols
)
2215 p
.x
= (dir
== -1 ? q
-ldata
: cols
- 1);
2220 * In this mode, the units are maximal runs of characters
2221 * whose `wordness' has the same value.
2223 wvalue
= wordness
[ldata
[p
.x
] & CHAR_MASK
];
2225 while (p
.x
< cols
&& wordness
[ldata
[p
.x
+1] & CHAR_MASK
] == wvalue
)
2228 while (p
.x
> 0 && wordness
[ldata
[p
.x
-1] & CHAR_MASK
] == wvalue
)
2234 * In this mode, every line is a unit.
2236 p
.x
= (dir
== -1 ?
0 : cols
- 1);
2242 static void sel_spread (void) {
2243 selstart
= sel_spread_half (selstart
, -1);
2245 selend
= sel_spread_half (selend
, +1);
2249 void term_mouse (Mouse_Button b
, Mouse_Action a
, int x
, int y
) {
2251 unsigned long *ldata
;
2254 if (y
>=rows
) y
= rows
-1;
2262 if (x
>=cols
) x
= cols
-1;
2264 selpoint
.y
= y
+ disptop
;
2266 ldata
= lineptr(selpoint
.y
);
2267 if ((ldata
[cols
]&LATTR_MODE
) != LATTR_NORM
)
2270 if (b
== MB_SELECT
&& a
== MA_CLICK
) {
2272 selstate
= ABOUT_TO
;
2273 selanchor
= selpoint
;
2275 } else if (b
== MB_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
2277 selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
2278 selstate
= DRAGGING
;
2279 selstart
= selanchor
= selpoint
;
2283 } else if ((b
== MB_SELECT
&& a
== MA_DRAG
) ||
2284 (b
== MB_EXTEND
&& a
!= MA_RELEASE
)) {
2285 if (selstate
== ABOUT_TO
&& poseq(selanchor
, selpoint
))
2287 if (b
== MB_EXTEND
&& a
!= MA_DRAG
&& selstate
== SELECTED
) {
2288 if (posdiff(selpoint
,selstart
) < posdiff(selend
,selstart
)/2) {
2292 selanchor
= selstart
;
2294 selstate
= DRAGGING
;
2296 if (selstate
!= ABOUT_TO
&& selstate
!= DRAGGING
)
2297 selanchor
= selpoint
;
2298 selstate
= DRAGGING
;
2299 if (poslt(selpoint
, selanchor
)) {
2300 selstart
= selpoint
;
2304 selstart
= selanchor
;
2309 } else if ((b
== MB_SELECT
|| b
== MB_EXTEND
) && a
== MA_RELEASE
) {
2310 if (selstate
== DRAGGING
) {
2312 * We've completed a selection. We now transfer the
2313 * data to the clipboard.
2315 clipme(selstart
, selend
, selspace
);
2316 selstate
= SELECTED
;
2318 selstate
= NO_SELECTION
;
2319 } else if (b
== MB_PASTE
&& (a
==MA_CLICK
|| a
==MA_2CLK
|| a
==MA_3CLK
)) {
2323 get_clip((void **) &data
, &len
);
2327 if (paste_buffer
) sfree(paste_buffer
);
2328 paste_pos
= paste_hold
= paste_len
= 0;
2329 paste_buffer
= smalloc(len
);
2332 while (p
< data
+len
) {
2333 while (p
< data
+len
&&
2334 !(p
<= data
+len
-sizeof(sel_nl
) &&
2335 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
2343 c
=xlat_kbd2tty(q
[i
]);
2344 paste_buffer
[paste_len
++] = c
;
2348 if (p
<= data
+len
-sizeof(sel_nl
) &&
2349 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
2350 paste_buffer
[paste_len
++] = '\r';
2351 p
+= sizeof(sel_nl
);
2356 /* Assume a small paste will be OK in one go. */
2357 if (paste_len
<256) {
2358 ldisc_send (paste_buffer
, paste_len
);
2359 if (paste_buffer
) sfree(paste_buffer
);
2361 paste_pos
= paste_hold
= paste_len
= 0;
2364 get_clip(NULL
, NULL
);
2370 void term_nopaste() {
2371 if(paste_len
== 0) return;
2372 sfree(paste_buffer
);
2378 static long last_paste
= 0;
2379 long now
, paste_diff
;
2381 if(paste_len
== 0) return;
2383 /* Don't wait forever to paste */
2385 now
= GetTickCount();
2386 paste_diff
= now
-last_paste
;
2387 if (paste_diff
>=0 && paste_diff
<450)
2392 while(paste_pos
<paste_len
)
2395 while (n
+ paste_pos
< paste_len
) {
2396 if (paste_buffer
[paste_pos
+ n
++] == '\r')
2399 ldisc_send (paste_buffer
+paste_pos
, n
);
2402 if (paste_pos
< paste_len
) {
2407 sfree(paste_buffer
);
2412 static void deselect (void) {
2413 selstate
= NO_SELECTION
;
2414 selstart
.x
= selstart
.y
= selend
.x
= selend
.y
= 0;
2417 void term_deselect (void) {
2422 int term_ldisc(int option
) {
2423 if (option
== LD_ECHO
) return term_echoing
;
2424 if (option
== LD_EDIT
) return term_editing
;
2429 * from_backend(), to get data from the backend for the terminal.
2431 void from_backend(int is_stderr
, char *data
, int len
) {
2433 if (inbuf_head
>= INBUF_SIZE
)
2435 inbuf
[inbuf_head
++] = *data
++;
2440 * Log session traffic.
2442 void logtraffic(unsigned char c
, int logmode
) {
2443 if (cfg
.logtype
> 0) {
2444 if (cfg
.logtype
== logmode
) {
2445 /* deferred open file from pgm start? */
2446 if (!lgfp
) logfopen();
2447 if (lgfp
) fputc (c
, lgfp
);
2452 /* open log file append/overwrite mode */
2453 void logfopen(void) {
2461 sprintf (writemod
, "wb"); /* default to rewrite */
2462 lgfp
= fopen(cfg
.logfilename
, "r"); /* file already present? */
2466 i
= askappend(cfg
.logfilename
);
2468 writemod
[0] = 'a'; /* set append mode */
2469 else if (i
== 0) { /* cancelled */
2471 cfg
.logtype
= 0; /* disable logging */
2476 lgfp
= fopen(cfg
.logfilename
, writemod
);
2477 if (lgfp
) { /* enter into event log */
2478 sprintf(buf
, "%s session log (%s mode) to file : ",
2479 (writemod
[0] == 'a') ?
"Appending" : "Writing new",
2480 (cfg
.logtype
== LGTYP_ASCII ?
"ASCII" :
2481 cfg
.logtype
== LGTYP_DEBUG ?
"raw" : "<ukwn>") );
2482 /* Make sure we do not exceed the output buffer size */
2483 strncat (buf
, cfg
.logfilename
, 128);
2484 buf
[strlen(buf
)] = '\0';
2487 /* --- write header line iinto log file */
2488 fputs ("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp
);
2491 strftime(buf
, 24, "%Y.%m.%d %H:%M:%S", tm
);
2493 fputs (" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp
);
2497 void logfclose (void) {
2498 if (lgfp
) { fclose(lgfp
); lgfp
= NULL
; }