11 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
12 #define CL_VT100 0x0002 /* VT100 */
13 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
14 #define CL_VT102 0x0008 /* VT102 */
15 #define CL_VT220 0x0010 /* VT220 */
16 #define CL_VT320 0x0020 /* VT320 */
17 #define CL_VT420 0x0040 /* VT420 */
18 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
19 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
20 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
21 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
22 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
24 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
25 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
26 #define TM_VT102 (TM_VT100AVO|CL_VT102)
27 #define TM_VT220 (TM_VT102|CL_VT220)
28 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
29 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
31 #define TM_PUTTY (0xFFFF)
33 #define compatibility(x) \
34 if ( ((CL_##x)&compatibility_level) == 0 ) { \
38 #define compatibility2(x,y) \
39 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
44 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
46 static int compatibility_level
= TM_PUTTY
;
48 static tree234
*scrollback
; /* lines scrolled off top of screen */
49 static tree234
*screen
; /* lines on primary screen */
50 static tree234
*alt_screen
; /* lines on alternate screen */
51 static int disptop
; /* distance scrolled back (0 or negative) */
53 static unsigned long *cpos
; /* cursor position (convenience) */
55 static unsigned long *disptext
; /* buffer of text on real screen */
56 static unsigned long *wanttext
; /* buffer of text we want on screen */
58 #define VBELL_TIMEOUT 100 /* millisecond duration of visual bell */
61 struct beeptime
*next
;
64 static struct beeptime
*beephead
, *beeptail
;
69 static unsigned char *selspace
; /* buffer for building selections in */
71 #define TSIZE (sizeof(unsigned long))
72 #define lineptr(x) ( (unsigned long *) \
73 ((x) >= 0 ? index234(screen, x) : \
74 index234(scrollback, (x)+count234(scrollback)) ) )
75 #define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
77 static unsigned long curr_attr
, save_attr
;
78 static unsigned long erase_char
= ERASE_CHAR
;
83 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
84 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
85 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
86 #define posdiff(p1,p2) ( ((p2).y - (p1).y) * (cols+1) + (p2).x - (p1).x )
87 #define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
88 #define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
90 static pos curs
; /* cursor */
91 static pos savecurs
; /* saved cursor position */
92 static int marg_t
, marg_b
; /* scroll margins */
93 static int dec_om
; /* DEC origin mode flag */
94 static int wrap
, wrapnext
; /* wrap flags */
95 static int insert
; /* insert-mode flag */
96 static int cset
; /* 0 or 1: which char set */
97 static int save_cset
, save_csattr
; /* saved with cursor position */
98 static int rvideo
; /* global reverse video flag */
99 static int rvbell_timeout
; /* for explicit (ESC[?5hESC[?5l) vbell */
100 static int cursor_on
; /* cursor enabled flag */
101 static int reset_132
; /* Flag ESC c resets to 80 cols */
102 static int use_bce
; /* Use Background coloured erase */
103 static int blinker
; /* When blinking is the cursor on ? */
104 static int tblinker
; /* When the blinking text is on */
105 static int blink_is_real
; /* Actually blink blinking text */
106 static int term_echoing
; /* Does terminal want local echo? */
107 static int term_editing
; /* Does terminal want local edit? */
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 * Set up power-on settings for the terminal.
193 static void power_on(void) {
194 curs
.x
= curs
.y
= alt_x
= alt_y
= savecurs
.x
= savecurs
.y
= 0;
197 alt_b
= marg_b
= rows
- 1;
202 for (i
= 0; i
< cols
; i
++)
203 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
205 alt_om
= dec_om
= cfg
.dec_om
;
206 alt_wnext
= wrapnext
= alt_ins
= insert
= FALSE
;
207 alt_wrap
= wrap
= cfg
.wrap_mode
;
209 cset_attr
[0] = cset_attr
[1] = ATTR_ASCII
;
213 save_attr
= curr_attr
= ATTR_DEFAULT
;
214 term_editing
= term_echoing
= FALSE
;
215 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
216 app_cursor_keys
= cfg
.app_cursor
;
217 app_keypad_keys
= cfg
.app_keypad
;
219 blink_is_real
= cfg
.blinktext
;
220 erase_char
= ERASE_CHAR
;
224 for (i
= 0; i
< 256; i
++)
225 wordness
[i
] = cfg
.wordness
[i
];
229 erase_lots (FALSE
, TRUE
, TRUE
);
231 erase_lots (FALSE
, TRUE
, TRUE
);
236 * Force a screen update.
238 void term_update(void) {
242 if ( (seen_key_event
&& (cfg
.scroll_on_key
)) ||
243 (seen_disp_event
&& (cfg
.scroll_on_disp
)) ) {
244 disptop
= 0; /* return to main screen */
245 seen_disp_event
= seen_key_event
= 0;
248 do_paint (ctx
, TRUE
);
249 sys_cursor(curs
.x
, curs
.y
- disptop
);
255 * Same as power_on(), but an external function.
257 void term_pwron(void) {
266 * Clear the scrollback.
268 void term_clrsb(void) {
271 while ((line
= delpos234(scrollback
, 0)) != NULL
) {
278 * Initialise the terminal.
280 void term_init(void) {
281 screen
= alt_screen
= scrollback
= NULL
;
283 disptext
= wanttext
= NULL
;
289 beephead
= beeptail
= NULL
;
292 beep_overloaded
= FALSE
;
296 * Set up the terminal for a given size.
298 void term_size(int newrows
, int newcols
, int newsavelines
) {
299 tree234
*newsb
, *newscreen
, *newalt
;
300 unsigned long *newdisp
, *newwant
, *oldline
, *line
;
302 int posn
, oldposn
, furthest_back
, oldsbsize
;
303 int save_alt_which
= alt_which
;
305 if (newrows
== rows
&& newcols
== cols
&& newsavelines
== savelines
)
306 return; /* nothing to do */
312 alt_b
= marg_b
= newrows
- 1;
314 newsb
= newtree234(NULL
);
315 newscreen
= newtree234(NULL
);
316 ccols
= (cols
< newcols ? cols
: newcols
);
317 oldsbsize
= scrollback ?
count234(scrollback
) : 0;
318 furthest_back
= newrows
- rows
- oldsbsize
;
319 if (furthest_back
> 0)
321 if (furthest_back
< -newsavelines
)
322 furthest_back
= -newsavelines
;
323 for (posn
= newrows
; posn
-- > furthest_back
;) {
324 oldposn
= posn
- newrows
+ rows
;
325 if (rows
== -1 || oldposn
< -oldsbsize
) {
326 line
= smalloc(TSIZE
* (newcols
+ 1));
327 for (j
= 0; j
< newcols
; j
++)
328 line
[j
] = erase_char
;
331 oldline
= (oldposn
>= 0 ?
332 delpos234(screen
, count234(screen
)-1) :
333 delpos234(scrollback
, count234(scrollback
)-1));
334 if (newcols
!= cols
) {
335 line
= smalloc(TSIZE
* (newcols
+ 1));
336 for (j
= 0; j
< ccols
; j
++)
337 line
[j
] = oldline
[j
];
338 for (j
= ccols
; j
< newcols
; j
++)
339 line
[j
] = erase_char
;
340 line
[newcols
] = oldline
[cols
] & LATTR_MODE
;
347 addpos234(newscreen
, line
, 0);
349 addpos234(newsb
, line
, 0);
352 if (scrollback
) freetree234(scrollback
);
353 if (screen
) freetree234(screen
);
357 newdisp
= smalloc (newrows
*(newcols
+1)*TSIZE
);
358 for (i
=0; i
<newrows
*(newcols
+1); i
++)
359 newdisp
[i
] = ATTR_INVALID
;
363 newwant
= smalloc (newrows
*(newcols
+1)*TSIZE
);
364 for (i
=0; i
<newrows
*(newcols
+1); i
++)
365 newwant
[i
] = ATTR_INVALID
;
369 newalt
= newtree234(NULL
);
370 for (i
=0; i
<newrows
; i
++) {
371 line
= smalloc(TSIZE
* (newcols
+1));
372 for (j
= 0; j
<= newcols
; j
++)
373 line
[j
] = erase_char
;
374 addpos234(newalt
, line
, i
);
377 while (NULL
!= (line
= delpos234(alt_screen
, 0)))
379 freetree234(alt_screen
);
384 selspace
= smalloc ( (newrows
+newsavelines
) * (newcols
+sizeof(sel_nl
)) );
386 tabs
= srealloc (tabs
, newcols
*sizeof(*tabs
));
389 for (i
= (cols
> 0 ? cols
: 0); i
< newcols
; i
++)
390 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
394 curs
.y
+= newrows
- rows
;
397 if (curs
.y
>= newrows
)
399 if (curs
.x
>= newcols
)
402 wrapnext
= alt_wnext
= FALSE
;
406 savelines
= newsavelines
;
409 swap_screen(save_alt_which
);
418 static void swap_screen (int which
) {
422 if (which
== alt_which
)
427 ttr
= alt_screen
; alt_screen
= screen
; screen
= ttr
;
428 t
= curs
.x
; curs
.x
= alt_x
; alt_x
= t
;
429 t
= curs
.y
; curs
.y
= alt_y
; alt_y
= t
;
430 t
= marg_t
; marg_t
= alt_t
; alt_t
= t
;
431 t
= marg_b
; marg_b
= alt_b
; alt_b
= t
;
432 t
= dec_om
; dec_om
= alt_om
; alt_om
= t
;
433 t
= wrap
; wrap
= alt_wrap
; alt_wrap
= t
;
434 t
= wrapnext
; wrapnext
= alt_wnext
; alt_wnext
= t
;
435 t
= insert
; insert
= alt_ins
; alt_ins
= t
;
436 t
= cset
; cset
= alt_cset
; alt_cset
= t
;
442 * Update the scroll bar.
444 static void update_sbar(void) {
447 nscroll
= count234(scrollback
);
449 set_sbar (nscroll
+ rows
, nscroll
+ disptop
, rows
);
453 * Check whether the region bounded by the two pointers intersects
454 * the scroll region, and de-select the on-screen selection if so.
456 static void check_selection (pos from
, pos to
) {
457 if (poslt(from
, selend
) && poslt(selstart
, to
))
462 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
463 * for backward.) `sb' is TRUE if the scrolling is permitted to
464 * affect the scrollback buffer.
466 * NB this function invalidates all pointers into lines of the
467 * screen data structures. In particular, you MUST call fix_cpos
468 * after calling scroll() and before doing anything else that
469 * uses the cpos shortcut pointer.
471 static void scroll (int topline
, int botline
, int lines
, int sb
) {
472 unsigned long *line
, *line2
;
475 if (topline
!= 0 || alt_which
!= 0)
480 line
= delpos234(screen
, botline
);
481 for (i
= 0; i
< cols
; i
++)
482 line
[i
] = erase_char
;
484 addpos234(screen
, line
, topline
);
486 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
488 if (selstart
.y
> botline
) {
489 selstart
.y
= botline
;
493 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
495 if (selend
.y
> botline
) {
505 line
= delpos234(screen
, topline
);
507 int sblen
= count234(scrollback
);
509 * We must add this line to the scrollback. We'll
510 * remove a line from the top of the scrollback to
511 * replace it, or allocate a new one if the
512 * scrollback isn't full.
514 if (sblen
== savelines
)
515 sblen
--, line2
= delpos234(scrollback
, 0);
517 line2
= smalloc(TSIZE
* (cols
+1));
518 addpos234(scrollback
, line
, sblen
);
521 for (i
= 0; i
< cols
; i
++)
522 line
[i
] = erase_char
;
524 addpos234(screen
, line
, botline
);
526 if (selstart
.y
>= topline
&& selstart
.y
<= botline
) {
528 if (selstart
.y
< topline
) {
529 selstart
.y
= topline
;
533 if (selend
.y
>= topline
&& selend
.y
<= botline
) {
535 if (selend
.y
< topline
) {
547 * Move the cursor to a given position, clipping at boundaries. We
548 * may or may not want to clip at the scroll margin: marg_clip is 0
549 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
550 * even _being_ outside the margins.
552 static void move (int x
, int y
, int marg_clip
) {
558 if ((curs
.y
>= marg_t
|| marg_clip
== 2) && y
< marg_t
)
560 if ((curs
.y
<= marg_b
|| marg_clip
== 2) && y
> marg_b
)
574 * Save or restore the cursor and SGR mode.
576 static void save_cursor(int save
) {
579 save_attr
= curr_attr
;
581 save_csattr
= cset_attr
[cset
];
584 /* Make sure the window hasn't shrunk since the save */
585 if (curs
.x
>= cols
) curs
.x
= cols
-1;
586 if (curs
.y
>= rows
) curs
.y
= rows
-1;
588 curr_attr
= save_attr
;
590 cset_attr
[cset
] = save_csattr
;
592 if (use_bce
) erase_char
= (' ' |(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
597 * Erase a large portion of the screen: the whole screen, or the
598 * whole line, or parts thereof.
600 static void erase_lots (int line_only
, int from_begin
, int to_end
) {
603 unsigned long *ldata
;
624 check_selection (start
, end
);
626 /* Clear screen also forces a full window redraw, just in case. */
627 if (start
.y
== 0 && start
.x
== 0 && end
.y
== rows
)
630 ldata
= lineptr(start
.y
);
631 while (poslt(start
, end
)) {
632 if (start
.y
== cols
&& !erase_lattr
)
633 ldata
[start
.x
] &= ~ATTR_WRAPPED
;
635 ldata
[start
.x
] = erase_char
;
637 ldata
= lineptr(start
.y
);
642 * Insert or delete characters within the current line. n is +ve if
643 * insertion is desired, and -ve for deletion.
645 static void insch (int n
) {
646 int dir
= (n
< 0 ?
-1 : +1);
649 unsigned long *ldata
;
651 n
= (n
< 0 ?
-n
: n
);
652 if (n
> cols
- curs
.x
)
654 m
= cols
- curs
.x
- n
;
656 cursplus
.x
= curs
.x
+ n
;
657 check_selection (curs
, cursplus
);
658 ldata
= lineptr(curs
.y
);
660 memmove (ldata
+ curs
.x
, ldata
+ curs
.x
+ n
, m
*TSIZE
);
662 ldata
[curs
.x
+ m
++] = erase_char
;
664 memmove (ldata
+ curs
.x
+ n
, ldata
+ curs
.x
, m
*TSIZE
);
666 ldata
[curs
.x
+ n
] = erase_char
;
671 * Toggle terminal mode `mode' to state `state'. (`query' indicates
672 * whether the mode is a DEC private one or a normal one.)
674 static void toggle_mode (int mode
, int query
, int state
) {
676 if (query
) switch (mode
) {
677 case 1: /* application cursor keys */
678 app_cursor_keys
= state
;
680 case 2: /* VT52 mode */
683 case 3: /* 80/132 columns */
685 request_resize (state ?
132 : 80, rows
, 1);
688 case 5: /* reverse video */
690 * Toggle reverse video. If we receive an OFF within the
691 * visual bell timeout period after an ON, we trigger an
692 * effective visual bell, so that ESC[?5hESC[?5l will
693 * always be an actually _visible_ visual bell.
695 ticks
= GetTickCount();
696 if (rvideo
&& !state
&& /* we're turning it off */
697 ticks
< rvbell_timeout
) { /* and it's not long since it was turned on */
698 in_vbell
= TRUE
; /* we may clear rvideo but we set in_vbell */
699 if (vbell_timeout
< rvbell_timeout
) /* don't move vbell end forward */
700 vbell_timeout
= rvbell_timeout
; /* vbell end is at least then */
701 } else if (!rvideo
&& state
) {
702 /* This is an ON, so we notice the time and save it. */
703 rvbell_timeout
= ticks
+ VBELL_TIMEOUT
;
706 seen_disp_event
= TRUE
;
707 if (state
) term_update();
709 case 6: /* DEC origin mode */
712 case 7: /* auto wrap */
715 case 8: /* auto key repeat */
718 case 10: /* set local edit mode */
719 term_editing
= state
;
720 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
722 case 25: /* enable/disable cursor */
723 compatibility2(OTHER
,VT220
);
725 seen_disp_event
= TRUE
;
727 case 47: /* alternate screen */
728 compatibility(OTHER
);
733 } else switch (mode
) {
734 case 4: /* set insert mode */
735 compatibility(VT102
);
738 case 12: /* set echo mode */
739 term_echoing
= !state
;
740 ldisc_send(NULL
, 0); /* cause ldisc to notice changes */
742 case 20: /* Return sends ... */
743 cr_lf_return
= state
;
749 * Process an OSC sequence: set window title or icon name.
751 static void do_osc(void) {
754 wordness
[(unsigned char)osc_string
[osc_strlen
]] = esc_args
[0];
756 osc_string
[osc_strlen
] = '\0';
757 switch (esc_args
[0]) {
760 set_icon (osc_string
);
761 if (esc_args
[0] == 1)
763 /* fall through: parameter 0 means set both */
766 set_title (osc_string
);
773 * Remove everything currently in `inbuf' and stick it up on the
774 * in-memory display. There's a big state machine in here to
775 * process escape sequences...
777 void term_out(void) {
780 for(inbuf_reap
= 0; inbuf_reap
< inbuf_head
; inbuf_reap
++)
782 c
= inbuf
[inbuf_reap
];
785 * Optionally log the session traffic to a file. Useful for
786 * debugging and possibly also useful for actual logging.
788 logtraffic((unsigned char)c
, LGTYP_DEBUG
);
790 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
791 * be able to display 8-bit characters, but I'll let that go 'cause
794 if( ( (c
&0x60) == 0 || c
== '\177') &&
795 termstate
< DO_CTRLS
&&
796 ( (c
&0x80) == 0 || has_compat(VT220
))) {
798 case '\005': /* terminal type query */
799 /* Strictly speaking this is VT100 but a VT100 defaults to
800 * no response. Other terminals respond at their option.
802 * Don't put a CR in the default string as this tends to
803 * upset some weird software.
805 * An xterm returns "xterm" (5 characters)
807 compatibility(ANSIMIN
);
809 char abuf
[256], *s
, *d
;
811 for(s
=cfg
.answerback
, d
=abuf
; *s
; s
++) {
814 if (*s
>= 'a' && *s
<= 'z')
815 *d
++ = (*s
- ('a'-1));
816 else if ((*s
>='@' && *s
<='_') ||
817 *s
== '?' || (*s
&0x80))
823 else if (*s
== '^') {
827 *d
++ = xlat_kbd2tty((unsigned char)*s
);
829 ldisc_send (abuf
, d
-abuf
);
834 struct beeptime
*newbeep
;
837 ticks
= GetTickCount();
839 if (!beep_overloaded
) {
840 newbeep
= smalloc(sizeof(struct beeptime
));
841 newbeep
->ticks
= ticks
;
842 newbeep
->next
= NULL
;
846 beeptail
->next
= newbeep
;
852 * Throw out any beeps that happened more than
856 beephead
->ticks
< ticks
- cfg
.bellovl_t
*1000) {
857 struct beeptime
*tmp
= beephead
;
858 beephead
= tmp
->next
;
865 if (cfg
.bellovl
&& beep_overloaded
&&
866 ticks
-lastbeep
>= cfg
.bellovl_s
* 1000) {
868 * If we're currently overloaded and the
869 * last beep was more than s seconds ago,
870 * leave overload mode.
872 beep_overloaded
= FALSE
;
873 } else if (cfg
.bellovl
&& !beep_overloaded
&&
874 nbeeps
>= cfg
.bellovl_n
) {
876 * Now, if we have n or more beeps
877 * remaining in the queue, go into overload
880 beep_overloaded
= TRUE
;
885 * Perform an actual beep if we're not overloaded.
887 if ((!cfg
.bellovl
|| !beep_overloaded
) && cfg
.beep
!= 0) {
890 else if(cfg
.beep
== 2) {
892 vbell_timeout
= ticks
+ VBELL_TIMEOUT
;
900 if (curs
.x
== 0 && curs
.y
== 0)
902 else if (curs
.x
== 0 && curs
.y
> 0)
903 curs
.x
= cols
-1, curs
.y
--;
909 seen_disp_event
= TRUE
;
912 compatibility(VT100
);
916 compatibility(VT100
);
921 termstate
= VT52_ESC
;
923 compatibility(ANSIMIN
);
924 termstate
= SEEN_ESC
;
928 compatibility(VT220
);
929 termstate
= SEEN_CSI
;
931 esc_args
[0] = ARG_DEFAULT
;
935 compatibility(VT220
);
936 termstate
= SEEN_OSC
;
943 seen_disp_event
= TRUE
;
945 logtraffic((unsigned char)c
,LGTYP_ASCII
);
949 compatibility(VT100
);
951 if (curs
.y
== marg_b
)
952 scroll (marg_t
, marg_b
, 1, TRUE
);
953 else if (curs
.y
< rows
-1)
961 logtraffic((unsigned char)c
,LGTYP_ASCII
);
966 unsigned long *ldata
= lineptr(curs
.y
);
970 } while (curs
.x
< cols
-1 && !tabs
[curs
.x
]);
972 if ((ldata
[cols
] & LATTR_MODE
) != LATTR_NORM
)
974 if (curs
.x
>= cols
/2)
984 check_selection (old_curs
, curs
);
986 seen_disp_event
= TRUE
;
988 case '\177': /* Destructive backspace
989 This does nothing on a real VT100 */
990 compatibility(OTHER
);
991 if (curs
.x
&& !wrapnext
) curs
.x
--;
994 *cpos
= (' ' | curr_attr
| ATTR_ASCII
);
998 else switch (termstate
) {
1000 /* Only graphic characters get this far, ctrls are stripped above */
1001 if (wrapnext
&& wrap
) {
1002 cpos
[1] |= ATTR_WRAPPED
;
1003 if (curs
.y
== marg_b
)
1004 scroll (marg_t
, marg_b
, 1, TRUE
);
1005 else if (curs
.y
< rows
-1)
1013 if (selstate
!= NO_SELECTION
) {
1014 pos cursplus
= curs
;
1016 check_selection (curs
, cursplus
);
1018 switch (cset_attr
[cset
]) {
1020 * Linedraw characters are different from 'ESC ( B'
1021 * only for a small range. For ones outside that
1022 * range, make sure we use the same font as well as
1023 * the same encoding.
1026 if (c
<0x5f || c
>0x7F)
1027 *cpos
++ = xlat_tty2scr((unsigned char)c
) | curr_attr
|
1030 *cpos
++ = ' ' | curr_attr
| ATTR_ASCII
;
1032 *cpos
++ = ((unsigned char)c
) | curr_attr
| ATTR_LINEDRW
;
1035 /* If UK-ASCII, make the '#' a LineDraw Pound */
1037 *cpos
++ = '}' | curr_attr
| ATTR_LINEDRW
;
1042 *cpos
= xlat_tty2scr((unsigned char)c
) | curr_attr
|
1043 (c
<= 0x7F ? cset_attr
[cset
] : ATTR_ASCII
);
1044 logtraffic((unsigned char)c
, LGTYP_ASCII
);
1049 if (curs
.x
== cols
) {
1054 seen_disp_event
= 1;
1058 termstate
= TOPLEVEL
;
1062 * This state is virtually identical to SEEN_ESC, with the
1063 * exception that we have an OSC sequence in the pipeline,
1064 * and _if_ we see a backslash, we process it.
1068 termstate
= TOPLEVEL
;
1071 /* else fall through */
1073 termstate
= TOPLEVEL
;
1075 case ' ': /* some weird sequence? */
1076 compatibility(VT220
);
1077 termstate
= IGNORE_NEXT
;
1079 case '[': /* enter CSI mode */
1080 termstate
= SEEN_CSI
;
1082 esc_args
[0] = ARG_DEFAULT
;
1085 case ']': /* xterm escape sequences */
1086 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1087 compatibility(OTHER
);
1088 termstate
= SEEN_OSC
;
1091 case '(': /* should set GL */
1092 compatibility(VT100
);
1095 case ')': /* should set GR */
1096 compatibility(VT100
);
1099 case '7': /* save cursor */
1100 compatibility(VT100
);
1103 case '8': /* restore cursor */
1104 compatibility(VT100
);
1105 save_cursor (FALSE
);
1106 seen_disp_event
= TRUE
;
1109 compatibility(VT100
);
1110 app_keypad_keys
= TRUE
;
1113 compatibility(VT100
);
1114 app_keypad_keys
= FALSE
;
1116 case 'D': /* exactly equivalent to LF */
1117 compatibility(VT100
);
1118 if (curs
.y
== marg_b
)
1119 scroll (marg_t
, marg_b
, 1, TRUE
);
1120 else if (curs
.y
< rows
-1)
1124 seen_disp_event
= TRUE
;
1126 case 'E': /* exactly equivalent to CR-LF */
1127 compatibility(VT100
);
1129 if (curs
.y
== marg_b
)
1130 scroll (marg_t
, marg_b
, 1, TRUE
);
1131 else if (curs
.y
< rows
-1)
1135 seen_disp_event
= TRUE
;
1137 case 'M': /* reverse index - backwards LF */
1138 compatibility(VT100
);
1139 if (curs
.y
== marg_t
)
1140 scroll (marg_t
, marg_b
, -1, TRUE
);
1141 else if (curs
.y
> 0)
1145 seen_disp_event
= TRUE
;
1147 case 'Z': /* terminal type query */
1148 compatibility(VT100
);
1149 ldisc_send (id_string
, strlen(id_string
));
1151 case 'c': /* restore power-on settings */
1152 compatibility(VT100
);
1155 request_resize (80, rows
, 1);
1160 seen_disp_event
= TRUE
;
1162 case '#': /* ESC # 8 fills screen with Es :-) */
1163 compatibility(VT100
);
1164 termstate
= SEEN_ESCHASH
;
1166 case 'H': /* set a tab */
1167 compatibility(VT100
);
1168 tabs
[curs
.x
] = TRUE
;
1173 termstate
= TOPLEVEL
; /* default */
1176 if (esc_nargs
<= ARGS_MAX
) {
1177 if (esc_args
[esc_nargs
-1] == ARG_DEFAULT
)
1178 esc_args
[esc_nargs
-1] = 0;
1179 esc_args
[esc_nargs
-1] =
1180 10 * esc_args
[esc_nargs
-1] + c
- '0';
1182 termstate
= SEEN_CSI
;
1186 if (++esc_nargs
<= ARGS_MAX
)
1187 esc_args
[esc_nargs
-1] = ARG_DEFAULT
;
1188 termstate
= SEEN_CSI
;
1192 if( esc_query
) esc_query
= -1;
1193 else if( c
== '?' ) esc_query
= TRUE
;
1195 termstate
= SEEN_CSI
;
1197 else switch (ANSI(c
,esc_query
)) {
1198 case 'A': /* move up N lines */
1199 move (curs
.x
, curs
.y
- def(esc_args
[0], 1), 1);
1200 seen_disp_event
= TRUE
;
1202 case 'e': /* move down N lines */
1203 compatibility(ANSI
);
1205 move (curs
.x
, curs
.y
+ def(esc_args
[0], 1), 1);
1206 seen_disp_event
= TRUE
;
1208 case 'a': /* move right N cols */
1209 compatibility(ANSI
);
1211 move (curs
.x
+ def(esc_args
[0], 1), curs
.y
, 1);
1212 seen_disp_event
= TRUE
;
1214 case 'D': /* move left N cols */
1215 move (curs
.x
- def(esc_args
[0], 1), curs
.y
, 1);
1216 seen_disp_event
= TRUE
;
1218 case 'E': /* move down N lines and CR */
1219 compatibility(ANSI
);
1220 move (0, curs
.y
+ def(esc_args
[0], 1), 1);
1221 seen_disp_event
= TRUE
;
1223 case 'F': /* move up N lines and CR */
1224 compatibility(ANSI
);
1225 move (0, curs
.y
- def(esc_args
[0], 1), 1);
1226 seen_disp_event
= TRUE
;
1228 case 'G': case '`': /* set horizontal posn */
1229 compatibility(ANSI
);
1230 move (def(esc_args
[0], 1) - 1, curs
.y
, 0);
1231 seen_disp_event
= TRUE
;
1233 case 'd': /* set vertical posn */
1234 compatibility(ANSI
);
1235 move (curs
.x
, (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1237 seen_disp_event
= TRUE
;
1239 case 'H': case 'f': /* set horz and vert posns at once */
1241 esc_args
[1] = ARG_DEFAULT
;
1242 move (def(esc_args
[1], 1) - 1,
1243 (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1245 seen_disp_event
= TRUE
;
1247 case 'J': /* erase screen or parts of it */
1249 unsigned int i
= def(esc_args
[0], 0) + 1;
1252 erase_lots(FALSE
, !!(i
& 2), !!(i
& 1));
1255 seen_disp_event
= TRUE
;
1257 case 'K': /* erase line or parts of it */
1259 unsigned int i
= def(esc_args
[0], 0) + 1;
1262 erase_lots(TRUE
, !!(i
& 2), !!(i
& 1));
1264 seen_disp_event
= TRUE
;
1266 case 'L': /* insert lines */
1267 compatibility(VT102
);
1268 if (curs
.y
<= marg_b
)
1269 scroll (curs
.y
, marg_b
, -def(esc_args
[0], 1), FALSE
);
1271 seen_disp_event
= TRUE
;
1273 case 'M': /* delete lines */
1274 compatibility(VT102
);
1275 if (curs
.y
<= marg_b
)
1276 scroll (curs
.y
, marg_b
, def(esc_args
[0], 1), TRUE
);
1278 seen_disp_event
= TRUE
;
1280 case '@': /* insert chars */
1281 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1282 compatibility(VT102
);
1283 insch (def(esc_args
[0], 1));
1284 seen_disp_event
= TRUE
;
1286 case 'P': /* delete chars */
1287 compatibility(VT102
);
1288 insch (-def(esc_args
[0], 1));
1289 seen_disp_event
= TRUE
;
1291 case 'c': /* terminal type query */
1292 compatibility(VT100
);
1293 /* This is the response for a VT102 */
1294 ldisc_send (id_string
, strlen(id_string
));
1296 case 'n': /* cursor position query */
1297 if (esc_args
[0] == 6) {
1299 sprintf (buf
, "\033[%d;%dR", curs
.y
+ 1, curs
.x
+ 1);
1300 ldisc_send (buf
, strlen(buf
));
1302 else if (esc_args
[0] == 5) {
1303 ldisc_send ("\033[0n", 4);
1306 case 'h': /* toggle modes to high */
1308 compatibility(VT100
);
1311 for (i
=0; i
<esc_nargs
; i
++)
1312 toggle_mode (esc_args
[i
], esc_query
, TRUE
);
1315 case 'l': /* toggle modes to low */
1317 compatibility(VT100
);
1320 for (i
=0; i
<esc_nargs
; i
++)
1321 toggle_mode (esc_args
[i
], esc_query
, FALSE
);
1324 case 'g': /* clear tabs */
1325 compatibility(VT100
);
1326 if (esc_nargs
== 1) {
1327 if (esc_args
[0] == 0) {
1328 tabs
[curs
.x
] = FALSE
;
1329 } else if (esc_args
[0] == 3) {
1331 for (i
= 0; i
< cols
; i
++)
1336 case 'r': /* set scroll margins */
1337 compatibility(VT100
);
1338 if (esc_nargs
<= 2) {
1340 top
= def(esc_args
[0], 1) - 1;
1341 bot
= (esc_nargs
<= 1 || esc_args
[1] == 0 ? rows
:
1342 def(esc_args
[1], rows
)) - 1;
1345 /* VTTEST Bug 9 - if region is less than 2 lines
1346 * don't change region.
1353 * I used to think the cursor should be
1354 * placed at the top of the newly marginned
1355 * area. Apparently not: VMS TPU falls over
1358 * Well actually it should for Origin mode - RDB
1360 curs
.y
= (dec_om ? marg_t
: 0);
1362 seen_disp_event
= TRUE
;
1366 case 'm': /* set graphics rendition */
1369 * A VT100 without the AVO only had one attribute, either
1370 * underline or reverse video depending on the cursor type,
1371 * this was selected by CSI 7m.
1374 * This is DIM on the VT100-AVO and VT102
1376 * This is BLINK on the VT100-AVO and VT102+
1378 * This is INVIS on the VT100-AVO and VT102
1380 * This like 22 disables BOLD, DIM and INVIS
1382 * The ANSI colours appear on any terminal that has colour
1383 * (obviously) but the interaction between sgr0 and the
1384 * colours varies but is usually related to the background
1385 * colour erase item.
1386 * The interaction between colour attributes and the mono
1387 * ones is also very implementation dependent.
1389 * The 39 and 49 attributes are likely to be unimplemented.
1392 for (i
=0; i
<esc_nargs
; i
++) {
1393 switch (def(esc_args
[i
], 0)) {
1394 case 0: /* restore defaults */
1395 curr_attr
= ATTR_DEFAULT
; break;
1396 case 1: /* enable bold */
1397 compatibility(VT100AVO
);
1398 curr_attr
|= ATTR_BOLD
; break;
1399 case 21: /* (enable double underline) */
1400 compatibility(OTHER
);
1401 case 4: /* enable underline */
1402 compatibility(VT100AVO
);
1403 curr_attr
|= ATTR_UNDER
; break;
1404 case 5: /* enable blink */
1405 compatibility(VT100AVO
);
1406 curr_attr
|= ATTR_BLINK
; break;
1407 case 7: /* enable reverse video */
1408 curr_attr
|= ATTR_REVERSE
; break;
1409 case 22: /* disable bold */
1410 compatibility2(OTHER
,VT220
);
1411 curr_attr
&= ~ATTR_BOLD
; break;
1412 case 24: /* disable underline */
1413 compatibility2(OTHER
,VT220
);
1414 curr_attr
&= ~ATTR_UNDER
; break;
1415 case 25: /* disable blink */
1416 compatibility2(OTHER
,VT220
);
1417 curr_attr
&= ~ATTR_BLINK
; break;
1418 case 27: /* disable reverse video */
1419 compatibility2(OTHER
,VT220
);
1420 curr_attr
&= ~ATTR_REVERSE
; break;
1421 case 30: case 31: case 32: case 33:
1422 case 34: case 35: case 36: case 37:
1424 curr_attr
&= ~ATTR_FGMASK
;
1425 curr_attr
|= (esc_args
[i
] - 30) << ATTR_FGSHIFT
;
1427 case 39: /* default-foreground */
1428 curr_attr
&= ~ATTR_FGMASK
;
1429 curr_attr
|= ATTR_DEFFG
;
1431 case 40: case 41: case 42: case 43:
1432 case 44: case 45: case 46: case 47:
1434 curr_attr
&= ~ATTR_BGMASK
;
1435 curr_attr
|= (esc_args
[i
] - 40) << ATTR_BGSHIFT
;
1437 case 49: /* default-background */
1438 curr_attr
&= ~ATTR_BGMASK
;
1439 curr_attr
|= ATTR_DEFBG
;
1446 (curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
|ATTR_BLINK
))
1450 case 's': /* save cursor */
1453 case 'u': /* restore cursor */
1454 save_cursor (FALSE
);
1455 seen_disp_event
= TRUE
;
1457 case 't': /* set page size - ie window height */
1459 * VT340/VT420 sequence DECSLPP, DEC only allows values
1460 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1461 * illegal values (eg first arg 1..9) for window changing
1464 compatibility(VT340TEXT
);
1465 if (esc_nargs
<=1 && (esc_args
[0]<1 || esc_args
[0]>=24)) {
1466 request_resize (cols
, def(esc_args
[0], 24), 0);
1470 case ANSI('|', '*'):
1471 /* VT420 sequence DECSNLS
1472 * Set number of lines on screen
1473 * VT420 uses VGA like hardware and can support any size in
1474 * reasonable range (24..49 AIUI) with no default specified.
1476 compatibility(VT420
);
1477 if (esc_nargs
==1 && esc_args
[0]>0) {
1478 request_resize (cols
, def(esc_args
[0], cfg
.height
), 0);
1482 case ANSI('|', '$'):
1483 /* VT340/VT420 sequence DECSCPP
1484 * Set number of columns per page
1485 * Docs imply range is only 80 or 132, but I'll allow any.
1487 compatibility(VT340TEXT
);
1489 request_resize (def(esc_args
[0], cfg
.width
), rows
, 0);
1493 case 'X': /* write N spaces w/o moving cursor */
1494 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1495 compatibility(ANSIMIN
);
1497 int n
= def(esc_args
[0], 1);
1499 unsigned long *p
= cpos
;
1500 if (n
> cols
- curs
.x
)
1504 check_selection (curs
, cursplus
);
1507 seen_disp_event
= TRUE
;
1510 case 'x': /* report terminal characteristics */
1511 compatibility(VT100
);
1514 int i
= def(esc_args
[0], 0);
1515 if (i
== 0 || i
== 1) {
1516 strcpy (buf
, "\033[2;1;1;112;112;1;0x");
1518 ldisc_send (buf
, 20);
1523 compatibility(OTHER
);
1524 use_bce
= (esc_args
[0]<=0);
1525 erase_char
= ERASE_CHAR
;
1527 erase_char
= (' '|(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
1530 compatibility(OTHER
);
1531 blink_is_real
= (esc_args
[0]>=1);
1534 /* Allow the host to make this emulator a 'perfect' VT102.
1535 * This first appeared in the VT220, but we do need to get
1536 * back to PuTTY mode so I won't check it.
1538 * The arg in 40..42 are a PuTTY extension.
1539 * The 2nd arg, 8bit vs 7bit is not checked.
1541 * Setting VT102 mode should also change the Fkeys to
1542 * generate PF* codes as a real VT102 has no Fkeys.
1543 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1546 * Note ESC c will NOT change this!
1549 switch (esc_args
[0]) {
1550 case 61: compatibility_level
&= ~TM_VTXXX
;
1551 compatibility_level
|= TM_VT102
; break;
1552 case 62: compatibility_level
&= ~TM_VTXXX
;
1553 compatibility_level
|= TM_VT220
; break;
1555 default: if( esc_args
[0] > 60 && esc_args
[0] < 70 )
1556 compatibility_level
|= TM_VTXXX
;
1559 case 40: compatibility_level
&= TM_VTXXX
; break;
1560 case 41: compatibility_level
= TM_PUTTY
; break;
1561 case 42: compatibility_level
= TM_SCOANSI
; break;
1564 compatibility_level
= TM_PUTTY
; break;
1568 /* Change the response to CSI c */
1569 if (esc_args
[0] == 50) {
1572 strcpy(id_string
, "\033[?");
1573 for (i
=1; i
<esc_nargs
; i
++) {
1574 if (i
!=1) strcat(id_string
, ";");
1575 sprintf(lbuf
, "%d", esc_args
[i
]);
1576 strcat(id_string
, lbuf
);
1578 strcat(id_string
, "c");
1582 /* Is this a good idea ?
1583 * Well we should do a soft reset at this point ...
1585 if (!has_compat(VT420
) && has_compat(VT100
)) {
1586 if (reset_132
) request_resize (132, 24, 1);
1587 else request_resize ( 80, 24, 1);
1595 /* VT100 only here, checked above */
1598 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_GBCHR
;
1601 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_LINEDRW
;
1604 default: /* specifically, 'B' */
1605 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_ASCII
;
1608 if( !has_compat(VT220
) || c
!= '%' )
1609 termstate
= TOPLEVEL
;
1614 case 'P': /* Linux palette sequence */
1615 termstate
= SEEN_OSC_P
;
1618 case 'R': /* Linux palette reset */
1621 termstate
= TOPLEVEL
;
1623 case 'W': /* word-set */
1624 termstate
= SEEN_OSC_W
;
1627 case '0': case '1': case '2': case '3': case '4':
1628 case '5': case '6': case '7': case '8': case '9':
1629 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1633 * Grotty hack to support xterm and DECterm title
1634 * sequences concurrently.
1636 if (esc_args
[0] == 2) {
1640 /* else fall through */
1642 termstate
= OSC_STRING
;
1648 * This OSC stuff is EVIL. It takes just one character to get into
1649 * sysline mode and it's not initially obvious how to get out.
1650 * So I've added CR and LF as string aborts.
1651 * This shouldn't effect compatibility as I believe embedded
1652 * control characters are supposed to be interpreted (maybe?)
1653 * and they don't display anything useful anyway.
1657 if (c
== '\n' || c
== '\r') {
1658 termstate
= TOPLEVEL
;
1659 } else if (c
== 0234 || c
== '\007' ) {
1661 * These characters terminate the string; ST and BEL
1662 * terminate the sequence and trigger instant
1663 * processing of it, whereas ESC goes back to SEEN_ESC
1664 * mode unless it is followed by \, in which case it is
1665 * synonymous with ST in the first place.
1668 termstate
= TOPLEVEL
;
1669 } else if (c
== '\033')
1670 termstate
= OSC_MAYBE_ST
;
1671 else if (osc_strlen
< OSC_STR_MAX
)
1672 osc_string
[osc_strlen
++] = c
;
1676 int max
= (osc_strlen
== 0 ?
21 : 16);
1678 if (c
>= '0' && c
<= '9')
1680 else if (c
>= 'A' && c
<= 'A'+max
-10)
1682 else if (c
>= 'a' && c
<= 'a'+max
-10)
1685 termstate
= TOPLEVEL
;
1686 osc_string
[osc_strlen
++] = val
;
1687 if (osc_strlen
>= 7) {
1688 palette_set (osc_string
[0],
1689 osc_string
[1] * 16 + osc_string
[2],
1690 osc_string
[3] * 16 + osc_string
[4],
1691 osc_string
[5] * 16 + osc_string
[6]);
1693 termstate
= TOPLEVEL
;
1699 case '0': case '1': case '2': case '3': case '4':
1700 case '5': case '6': case '7': case '8': case '9':
1701 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1704 termstate
= OSC_STRING
;
1710 unsigned long nlattr
;
1711 unsigned long *ldata
;
1717 for (i
= 0; i
< rows
; i
++) {
1719 for (j
= 0; j
< cols
; j
++)
1720 ldata
[j
] = ATTR_DEFAULT
| 'E';
1724 seen_disp_event
= TRUE
;
1725 scrtop
.x
= scrtop
.y
= 0;
1726 scrbot
.x
= 0; scrbot
.y
= rows
;
1727 check_selection (scrtop
, scrbot
);
1730 case '3': nlattr
= LATTR_TOP
; goto lattr_common
;
1731 case '4': nlattr
= LATTR_BOT
; goto lattr_common
;
1732 case '5': nlattr
= LATTR_NORM
; goto lattr_common
;
1733 case '6': nlattr
= LATTR_WIDE
;
1736 ldata
= lineptr(curs
.y
);
1737 ldata
[cols
] &= ~LATTR_MODE
;
1738 ldata
[cols
] |= nlattr
;
1741 termstate
= TOPLEVEL
;
1744 termstate
= TOPLEVEL
;
1745 seen_disp_event
= TRUE
;
1748 move (curs
.x
, curs
.y
- 1, 1);
1751 move (curs
.x
, curs
.y
+ 1, 1);
1754 move (curs
.x
+ 1, curs
.y
, 1);
1757 move (curs
.x
- 1, curs
.y
, 1);
1760 cset_attr
[cset
=0] = ATTR_LINEDRW
;
1763 cset_attr
[cset
=0] = ATTR_ASCII
;
1770 scroll (0, rows
-1, -1, TRUE
);
1771 else if (curs
.y
> 0)
1777 erase_lots(FALSE
, FALSE
, TRUE
);
1781 erase_lots(TRUE
, FALSE
, TRUE
);
1784 /* XXX Print cursor line */
1787 /* XXX Start controller mode */
1790 /* XXX Stop controller mode */
1793 termstate
= VT52_Y1
;
1796 ldisc_send ("\033/Z", 3);
1799 app_keypad_keys
= TRUE
;
1802 app_keypad_keys
= FALSE
;
1805 /* XXX This should switch to VT100 mode not current or default
1806 * VT mode. But this will only have effect in a VT220+
1812 /* XXX Enter auto print mode */
1815 /* XXX Exit auto print mode */
1818 /* XXX Print screen */
1823 termstate
= VT52_Y2
;
1824 move(curs
.x
, c
-' ', 0);
1827 termstate
= TOPLEVEL
;
1828 move(c
-' ', curs
.y
, 0);
1831 if (selstate
!= NO_SELECTION
) {
1832 pos cursplus
= curs
;
1834 check_selection (curs
, cursplus
);
1841 * Compare two lines to determine whether they are sufficiently
1842 * alike to scroll-optimise one to the other. Return the degree of
1845 static int linecmp (unsigned long *a
, unsigned long *b
) {
1848 for (i
=n
=0; i
< cols
; i
++)
1849 n
+= (*a
++ == *b
++);
1854 * Given a context, update the window. Out of paranoia, we don't
1855 * allow WM_PAINT responses to do scrolling optimisations.
1857 static void do_paint (Context ctx
, int may_optimise
) {
1858 int i
, j
, start
, our_curs_y
;
1859 unsigned long attr
, rv
, cursor
;
1865 * Check the visual bell state.
1868 ticks
= GetTickCount();
1869 if (ticks
- vbell_timeout
>= 0)
1874 * screen array, disptop, scrtop,
1876 * cfg.blinkpc, blink_is_real, tblinker,
1877 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus
1881 if (blinker
|| !cfg
.blink_cur
)
1882 cursor
= ATTR_ACTCURS
;
1887 cursor
= ATTR_PASCURS
;
1889 cursor
|= ATTR_RIGHTCURS
;
1893 rv
= (!rvideo
^ !in_vbell ? ATTR_REVERSE
: 0);
1894 our_curs_y
= curs
.y
- disptop
;
1896 for (i
=0; i
<rows
; i
++) {
1897 unsigned long *ldata
;
1899 scrpos
.y
= i
+ disptop
;
1900 ldata
= lineptr(scrpos
.y
);
1901 lattr
= (ldata
[cols
] & LATTR_MODE
);
1902 for (j
=0; j
<=cols
; j
++) {
1903 unsigned long d
= ldata
[j
];
1904 int idx
= i
*(cols
+1)+j
;
1907 wanttext
[idx
] = lattr
| (((d
&~ ATTR_WRAPPED
) ^ rv
1908 ^ (posle(selstart
, scrpos
) &&
1909 poslt(scrpos
, selend
) ?
1910 ATTR_REVERSE
: 0)) |
1911 (i
==our_curs_y
&& j
==curs
.x ? cursor
: 0));
1912 if (blink_is_real
) {
1913 if (has_focus
&& tblinker
&& (wanttext
[idx
]&ATTR_BLINK
) )
1915 wanttext
[idx
] &= ATTR_MASK
;
1916 wanttext
[idx
] += ' ';
1918 wanttext
[idx
] &= ~ATTR_BLINK
;
1924 * We would perform scrolling optimisations in here, if they
1925 * didn't have a nasty tendency to cause the whole sodding
1926 * program to hang for a second at speed-critical moments.
1927 * We'll leave it well alone...
1930 for (i
=0; i
<rows
; i
++) {
1931 int idx
= i
*(cols
+1);
1932 int lattr
= (wanttext
[idx
+cols
] & LATTR_MODE
);
1934 for (j
=0; j
<=cols
; j
++,idx
++) {
1935 unsigned long t
= wanttext
[idx
];
1936 int needs_update
= (j
< cols
&& t
!= disptext
[idx
]);
1937 int keep_going
= (start
!= -1 && needs_update
&&
1938 (t
& ATTR_MASK
) == attr
&&
1939 j
-start
< sizeof(ch
));
1940 if (start
!= -1 && !keep_going
) {
1941 do_text (ctx
, start
, i
, ch
, j
-start
, attr
, lattr
);
1947 attr
= t
& ATTR_MASK
;
1949 ch
[j
-start
] = (char) (t
& CHAR_MASK
);
1957 * Flick the switch that says if blinking things should be shown or hidden.
1960 void term_blink(int flg
) {
1961 static long last_blink
= 0;
1962 static long last_tblink
= 0;
1963 long now
, blink_diff
;
1965 now
= GetTickCount();
1966 blink_diff
= now
-last_tblink
;
1968 /* Make sure the text blinks no more than 2Hz */
1969 if (blink_diff
<0 || blink_diff
>450)
1972 tblinker
= !tblinker
;
1981 blink_diff
= now
-last_blink
;
1983 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
1984 if (blink_diff
>=0 && blink_diff
<(long)GetCaretBlinkTime())
1992 * Invalidate the whole screen so it will be repainted in full.
1994 void term_invalidate(void) {
1997 for (i
=0; i
<rows
*(cols
+1); i
++)
1998 disptext
[i
] = ATTR_INVALID
;
2002 * Paint the window in response to a WM_PAINT message.
2004 void term_paint (Context ctx
, int l
, int t
, int r
, int b
) {
2005 int i
, j
, left
, top
, right
, bottom
;
2007 left
= l
/ font_width
;
2008 right
= (r
- 1) / font_width
;
2009 top
= t
/ font_height
;
2010 bottom
= (b
- 1) / font_height
;
2011 for (i
= top
; i
<= bottom
&& i
< rows
; i
++)
2013 if ( (disptext
[i
*(cols
+1)+cols
]&LATTR_MODE
) == LATTR_NORM
)
2014 for (j
= left
; j
<= right
&& j
< cols
; j
++)
2015 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
2017 for (j
= left
/2; j
<= right
/2+1 && j
< cols
; j
++)
2018 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
2021 /* This should happen soon enough, also for some reason it sometimes
2022 * fails to actually do anything when re-sizing ... painting the wrong
2024 do_paint (ctx, FALSE);
2029 * Attempt to scroll the scrollback. The second parameter gives the
2030 * position we want to scroll to; the first is +1 to denote that
2031 * this position is relative to the beginning of the scrollback, -1
2032 * to denote it is relative to the end, and 0 to denote that it is
2033 * relative to the current position.
2035 void term_scroll (int rel
, int where
) {
2036 int sbtop
= -count234(scrollback
);
2038 disptop
= (rel
< 0 ?
0 :
2039 rel
> 0 ? sbtop
: disptop
) + where
;
2040 if (disptop
< sbtop
)
2048 static void clipme(pos top
, pos bottom
, char *workbuf
) {
2049 char *wbptr
; /* where next char goes within workbuf */
2050 int wblen
= 0; /* workbuf len */
2051 int buflen
; /* amount of memory allocated to workbuf */
2053 if ( workbuf
!= NULL
) { /* user supplied buffer? */
2054 buflen
= -1; /* assume buffer passed in is big enough */
2055 wbptr
= workbuf
; /* start filling here */
2058 buflen
= 0; /* No data is available yet */
2060 while (poslt(top
, bottom
)) {
2062 unsigned long *ldata
= lineptr(top
.y
);
2068 if (!(ldata
[cols
] & ATTR_WRAPPED
)) {
2069 while ((ldata
[nlpos
.x
-1] & CHAR_MASK
) == 0x20 && poslt(top
, nlpos
))
2071 if (poslt(nlpos
, bottom
))
2074 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
2075 int ch
= (ldata
[top
.x
] & CHAR_MASK
);
2076 int set
= (ldata
[top
.x
] & CSET_MASK
);
2078 /* VT Specials -> ISO8859-1 for Cut&Paste */
2079 static const unsigned char poorman2
[] =
2080 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
2082 if (set
&& !cfg
.rawcnp
) {
2083 if (set
== ATTR_LINEDRW
&& ch
>= 0x60 && ch
< 0x7F) {
2085 if ((x
= poorman2
[2*(ch
-0x60)+1]) == ' ')
2087 ch
= (x
<<8) + poorman2
[2*(ch
-0x60)];
2092 if (cfg
.rawcnp
|| !!(ch
&0xE0)) {
2093 if ( wblen
== buflen
)
2095 workbuf
= srealloc(workbuf
, buflen
+= 100);
2096 wbptr
= workbuf
+ wblen
;
2099 *wbptr
++ = (unsigned char) ch
;
2107 for (i
=0; i
<sizeof(sel_nl
); i
++)
2109 if ( wblen
== buflen
)
2111 workbuf
= srealloc(workbuf
, buflen
+= 100);
2112 wbptr
= workbuf
+ wblen
;
2115 *wbptr
++ = sel_nl
[i
];
2121 write_clip (workbuf
, wblen
, FALSE
); /* transfer to clipboard */
2122 if ( buflen
> 0 ) /* indicates we allocated this buffer */
2126 void term_copyall (void) {
2128 top
.y
= -count234(scrollback
);
2130 clipme(top
, curs
, NULL
/* dynamic allocation */);
2134 * Spread the selection outwards according to the selection mode.
2136 static pos
sel_spread_half (pos p
, int dir
) {
2137 unsigned long *ldata
;
2140 ldata
= lineptr(p
.y
);
2145 * In this mode, every character is a separate unit, except
2146 * for runs of spaces at the end of a non-wrapping line.
2148 if (!(ldata
[cols
] & ATTR_WRAPPED
)) {
2149 unsigned long *q
= ldata
+cols
;
2150 while (q
> ldata
&& (q
[-1] & CHAR_MASK
) == 0x20)
2152 if (q
== ldata
+cols
)
2155 p
.x
= (dir
== -1 ? q
-ldata
: cols
- 1);
2160 * In this mode, the units are maximal runs of characters
2161 * whose `wordness' has the same value.
2163 wvalue
= wordness
[ldata
[p
.x
] & CHAR_MASK
];
2165 while (p
.x
< cols
&& wordness
[ldata
[p
.x
+1] & CHAR_MASK
] == wvalue
)
2168 while (p
.x
> 0 && wordness
[ldata
[p
.x
-1] & CHAR_MASK
] == wvalue
)
2174 * In this mode, every line is a unit.
2176 p
.x
= (dir
== -1 ?
0 : cols
- 1);
2182 static void sel_spread (void) {
2183 selstart
= sel_spread_half (selstart
, -1);
2185 selend
= sel_spread_half (selend
, +1);
2189 void term_mouse (Mouse_Button b
, Mouse_Action a
, int x
, int y
) {
2191 unsigned long *ldata
;
2194 if (y
>=rows
) y
= rows
-1;
2202 if (x
>=cols
) x
= cols
-1;
2204 selpoint
.y
= y
+ disptop
;
2206 ldata
= lineptr(selpoint
.y
);
2207 if ((ldata
[cols
]&LATTR_MODE
) != LATTR_NORM
)
2210 if (b
== MB_SELECT
&& a
== MA_CLICK
) {
2212 selstate
= ABOUT_TO
;
2213 selanchor
= selpoint
;
2215 } else if (b
== MB_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
2217 selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
2218 selstate
= DRAGGING
;
2219 selstart
= selanchor
= selpoint
;
2223 } else if ((b
== MB_SELECT
&& a
== MA_DRAG
) ||
2224 (b
== MB_EXTEND
&& a
!= MA_RELEASE
)) {
2225 if (selstate
== ABOUT_TO
&& poseq(selanchor
, selpoint
))
2227 if (b
== MB_EXTEND
&& a
!= MA_DRAG
&& selstate
== SELECTED
) {
2228 if (posdiff(selpoint
,selstart
) < posdiff(selend
,selstart
)/2) {
2232 selanchor
= selstart
;
2234 selstate
= DRAGGING
;
2236 if (selstate
!= ABOUT_TO
&& selstate
!= DRAGGING
)
2237 selanchor
= selpoint
;
2238 selstate
= DRAGGING
;
2239 if (poslt(selpoint
, selanchor
)) {
2240 selstart
= selpoint
;
2244 selstart
= selanchor
;
2249 } else if ((b
== MB_SELECT
|| b
== MB_EXTEND
) && a
== MA_RELEASE
) {
2250 if (selstate
== DRAGGING
) {
2252 * We've completed a selection. We now transfer the
2253 * data to the clipboard.
2255 clipme(selstart
, selend
, selspace
);
2256 selstate
= SELECTED
;
2258 selstate
= NO_SELECTION
;
2259 } else if (b
== MB_PASTE
&& (a
==MA_CLICK
|| a
==MA_2CLK
|| a
==MA_3CLK
)) {
2263 get_clip((void **) &data
, &len
);
2267 if (paste_buffer
) sfree(paste_buffer
);
2268 paste_pos
= paste_hold
= paste_len
= 0;
2269 paste_buffer
= smalloc(len
);
2272 while (p
< data
+len
) {
2273 while (p
< data
+len
&&
2274 !(p
<= data
+len
-sizeof(sel_nl
) &&
2275 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
2283 c
=xlat_kbd2tty(q
[i
]);
2284 paste_buffer
[paste_len
++] = c
;
2288 if (p
<= data
+len
-sizeof(sel_nl
) &&
2289 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
2290 paste_buffer
[paste_len
++] = '\r';
2291 p
+= sizeof(sel_nl
);
2296 /* Assume a small paste will be OK in one go. */
2297 if (paste_len
<256) {
2298 ldisc_send (paste_buffer
, paste_len
);
2299 if (paste_buffer
) sfree(paste_buffer
);
2301 paste_pos
= paste_hold
= paste_len
= 0;
2304 get_clip(NULL
, NULL
);
2310 void term_nopaste() {
2311 if(paste_len
== 0) return;
2312 sfree(paste_buffer
);
2318 static long last_paste
= 0;
2319 long now
, paste_diff
;
2321 if(paste_len
== 0) return;
2323 /* Don't wait forever to paste */
2325 now
= GetTickCount();
2326 paste_diff
= now
-last_paste
;
2327 if (paste_diff
>=0 && paste_diff
<450)
2332 while(paste_pos
<paste_len
)
2335 while (n
+ paste_pos
< paste_len
) {
2336 if (paste_buffer
[paste_pos
+ n
++] == '\r')
2339 ldisc_send (paste_buffer
+paste_pos
, n
);
2342 if (paste_pos
< paste_len
) {
2347 sfree(paste_buffer
);
2352 static void deselect (void) {
2353 selstate
= NO_SELECTION
;
2354 selstart
.x
= selstart
.y
= selend
.x
= selend
.y
= 0;
2357 void term_deselect (void) {
2362 int term_ldisc(int option
) {
2363 if (option
== LD_ECHO
) return term_echoing
;
2364 if (option
== LD_EDIT
) return term_editing
;
2369 * from_backend(), to get data from the backend for the terminal.
2371 void from_backend(int is_stderr
, char *data
, int len
) {
2373 if (inbuf_head
>= INBUF_SIZE
)
2375 inbuf
[inbuf_head
++] = *data
++;
2380 * Log session traffic.
2382 void logtraffic(unsigned char c
, int logmode
) {
2383 if (cfg
.logtype
> 0) {
2384 if (cfg
.logtype
== logmode
) {
2385 /* deferred open file from pgm start? */
2386 if (!lgfp
) logfopen();
2387 if (lgfp
) fputc (c
, lgfp
);
2392 /* open log file append/overwrite mode */
2393 void logfopen(void) {
2401 sprintf (writemod
, "wb"); /* default to rewrite */
2402 lgfp
= fopen(cfg
.logfilename
, "r"); /* file already present? */
2406 i
= askappend(cfg
.logfilename
);
2408 writemod
[0] = 'a'; /* set append mode */
2409 else if (i
== 0) { /* cancelled */
2411 cfg
.logtype
= 0; /* disable logging */
2416 lgfp
= fopen(cfg
.logfilename
, writemod
);
2417 if (lgfp
) { /* enter into event log */
2418 sprintf(buf
, "%s session log (%s mode) to file : ",
2419 (writemod
[0] == 'a') ?
"Appending" : "Writing new",
2420 (cfg
.logtype
== LGTYP_ASCII ?
"ASCII" :
2421 cfg
.logtype
== LGTYP_DEBUG ?
"raw" : "<ukwn>") );
2422 /* Make sure we do not exceed the output buffer size */
2423 strncat (buf
, cfg
.logfilename
, 128);
2424 buf
[strlen(buf
)] = '\0';
2427 /* --- write header line iinto log file */
2428 fputs ("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp
);
2431 strftime(buf
, 24, "%Y.%m.%d %H:%M:%S", tm
);
2433 fputs (" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp
);
2437 void logfclose (void) {
2438 if (lgfp
) { fclose(lgfp
); lgfp
= NULL
; }