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; }