12 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
13 #define CL_VT100 0x0002 /* VT100 */
14 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
15 #define CL_VT102 0x0008 /* VT102 */
16 #define CL_VT220 0x0010 /* VT220 */
17 #define CL_VT320 0x0020 /* VT320 */
18 #define CL_VT420 0x0040 /* VT420 */
19 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
20 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
21 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
22 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
23 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
25 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
26 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
27 #define TM_VT102 (TM_VT100AVO|CL_VT102)
28 #define TM_VT220 (TM_VT102|CL_VT220)
29 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
30 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
32 #define TM_PUTTY (0xFFFF)
34 #define compatibility(x) \
35 if ( ((CL_##x)&compatibility_level) == 0 ) { \
39 #define compatibility2(x,y) \
40 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
45 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
47 static int compatibility_level = TM_PUTTY;
49 static tree234 *scrollback; /* lines scrolled off top of screen */
50 static tree234 *screen; /* lines on primary screen */
51 static tree234 *alt_screen; /* lines on alternate screen */
52 static int disptop; /* distance scrolled back (0 or -ve) */
54 static unsigned long *cpos; /* cursor position (convenience) */
56 static unsigned long *disptext; /* buffer of text on real screen */
57 static unsigned long *wanttext; /* buffer of text we want on screen */
59 #define VBELL_TIMEOUT 100 /* millisecond len of visual bell */
62 struct beeptime *next;
65 static struct beeptime *beephead, *beeptail;
70 static unsigned char *selspace; /* buffer for building selections in */
72 #define TSIZE (sizeof(unsigned long))
73 #define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
75 static unsigned long curr_attr, save_attr;
76 static unsigned long erase_char = ERASE_CHAR;
81 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
82 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
83 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
84 #define posdiff(p1,p2) ( ((p2).y - (p1).y) * (cols+1) + (p2).x - (p1).x )
85 #define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
86 #define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
88 static pos curs; /* cursor */
89 static pos savecurs; /* saved cursor position */
90 static int marg_t, marg_b; /* scroll margins */
91 static int dec_om; /* DEC origin mode flag */
92 static int wrap, wrapnext; /* wrap flags */
93 static int insert; /* insert-mode flag */
94 static int cset; /* 0 or 1: which char set */
95 static int save_cset, save_csattr; /* saved with cursor position */
96 static int rvideo; /* global reverse video flag */
97 static int rvbell_timeout; /* for ESC[?5hESC[?5l vbell */
98 static int cursor_on; /* cursor enabled flag */
99 static int reset_132; /* Flag ESC c resets to 80 cols */
100 static int use_bce; /* Use Background coloured erase */
101 static int blinker; /* When blinking is the cursor on ? */
102 static int tblinker; /* When the blinking text is on */
103 static int blink_is_real; /* Actually blink blinking text */
104 static int term_echoing; /* Does terminal want local echo? */
105 static int term_editing; /* Does terminal want local edit? */
107 static unsigned long cset_attr[2];
110 * Saved settings on the alternate screen.
112 static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset;
113 static int alt_t, alt_b;
114 static int alt_which;
116 #define ARGS_MAX 32 /* max # of esc sequence arguments */
117 #define ARG_DEFAULT 0 /* if an arg isn't specified */
118 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
119 static int esc_args[ARGS_MAX];
120 static int esc_nargs;
121 static int esc_query;
122 #define ANSI(x,y) ((x)+((y)<<8))
123 #define ANSI_QUE(x) ANSI(x,TRUE)
125 #define OSC_STR_MAX 2048
126 static int osc_strlen;
127 static char osc_string[OSC_STR_MAX+1];
130 static char id_string[1024] = "\033[?6c";
132 static unsigned char *tabs;
146 OSC_STRING, OSC_MAYBE_ST,
154 NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
157 SM_CHAR, SM_WORD, SM_LINE
159 static pos selstart, selend, selanchor;
161 static short wordness[256] = {
162 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 01 */
163 0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2, 2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1, /* 23 */
164 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2, /* 45 */
165 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */
166 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 89 */
167 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* AB */
168 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* CD */
169 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* EF */
172 static unsigned char sel_nl[] = SEL_NL;
173 static char * paste_buffer = 0;
174 static int paste_len, paste_pos, paste_hold;
177 * Internal prototypes.
179 static void do_paint (Context, int);
180 static void erase_lots (int, int, int);
181 static void swap_screen (int);
182 static void update_sbar (void);
183 static void deselect (void);
184 /* log session to file stuff ... */
185 static FILE *lgfp = NULL;
186 static void logtraffic(unsigned char c, int logmode);
189 * Retrieve a line of the screen or of the scrollback, according to
190 * whether the y coordinate is non-negative or negative
193 unsigned long *lineptr(int y, int lineno) {
194 unsigned long *line, lineattrs;
196 int i, treeindex, oldlen;
202 whichtree = scrollback;
203 treeindex = y + count234(scrollback);
205 line = index234(whichtree, treeindex);
207 /* We assume that we don't screw up and retrieve something out of range. */
209 debug(("line=%d y=%d treeindex=%d\n", lineno, y, treeindex));
210 debug(("screen:%d scrollback:%d\n", count234(screen), count234(scrollback)));
211 assert(line != NULL);
214 if (line[0] != cols) {
216 * This line is the wrong length, which probably means it
217 * hasn't been accessed since a resize. Resize it now.
220 lineattrs = line[oldlen+1];
221 delpos234(whichtree, treeindex);
222 line = srealloc(line, TSIZE * (2+cols));
224 for (i = oldlen; i < cols; i++)
225 line[i+1] = ERASE_CHAR;
226 line[cols+1] = lineattrs & LATTR_MODE;
227 addpos234(whichtree, line, treeindex);
232 #define lineptr(x) lineptr(x,__LINE__)
234 * Set up power-on settings for the terminal.
236 static void power_on(void) {
237 curs.x = curs.y = alt_x = alt_y = savecurs.x = savecurs.y = 0;
240 alt_b = marg_b = rows - 1;
245 for (i = 0; i < cols; i++)
246 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
248 alt_om = dec_om = cfg.dec_om;
249 alt_wnext = wrapnext = alt_ins = insert = FALSE;
250 alt_wrap = wrap = cfg.wrap_mode;
252 cset_attr[0] = cset_attr[1] = ATTR_ASCII;
256 save_attr = curr_attr = ATTR_DEFAULT;
257 term_editing = term_echoing = FALSE;
258 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
259 app_cursor_keys = cfg.app_cursor;
260 app_keypad_keys = cfg.app_keypad;
262 blink_is_real = cfg.blinktext;
263 erase_char = ERASE_CHAR;
267 for (i = 0; i < 256; i++)
268 wordness[i] = cfg.wordness[i];
272 erase_lots (FALSE, TRUE, TRUE);
274 erase_lots (FALSE, TRUE, TRUE);
279 * Force a screen update.
281 void term_update(void) {
285 if ( (seen_key_event && (cfg.scroll_on_key)) ||
286 (seen_disp_event && (cfg.scroll_on_disp)) ) {
287 disptop = 0; /* return to main screen */
288 seen_disp_event = seen_key_event = 0;
291 do_paint (ctx, TRUE);
292 sys_cursor(curs.x, curs.y - disptop);
298 * Same as power_on(), but an external function.
300 void term_pwron(void) {
309 * Clear the scrollback.
311 void term_clrsb(void) {
314 while ((line = delpos234(scrollback, 0)) != NULL) {
321 * Initialise the terminal.
323 void term_init(void) {
324 screen = alt_screen = scrollback = NULL;
326 disptext = wanttext = NULL;
332 beephead = beeptail = NULL;
335 beep_overloaded = FALSE;
339 * Set up the terminal for a given size.
341 void term_size(int newrows, int newcols, int newsavelines) {
342 tree234 *newsb, *newscreen, *newalt;
343 unsigned long *newdisp, *newwant, *oldline, *line;
346 int save_alt_which = alt_which;
348 if (newrows == rows && newcols == cols && newsavelines == savelines)
349 return; /* nothing to do */
355 alt_b = marg_b = newrows - 1;
358 scrollback = newtree234(NULL);
359 screen = newtree234(NULL);
364 * Resize the screen and scrollback. We only need to shift
365 * lines around within our data structures, because lineptr()
366 * will take care of resizing each individual line if
369 * - If the new screen and the old screen differ in length, we
370 * must shunt some lines in from the scrollback or out to
373 * - If doing that fails to provide us with enough material to
374 * fill the new screen (i.e. the number of rows needed in
375 * the new screen exceeds the total number in the previous
376 * screen+scrollback), we must invent some blank lines to
379 * - Then, if the new scrollback length is less than the
380 * amount of scrollback we actually have, we must throw some
383 sblen = count234(scrollback);
384 debug(("resizing rows=%d sblen=%d newrows=%d newsb=%d\n",
385 rows, sblen, newrows, newsavelines));
386 if (newrows > rows) {
387 for (i = rows; i < newrows; i++) {
389 line = delpos234(scrollback, --sblen);
391 line = smalloc(TSIZE * (newcols+2));
393 for (j = 0; j <= newcols; j++)
394 line[j+1] = ERASE_CHAR;
396 addpos234(screen, line, 0);
398 } else if (newrows < rows) {
399 for (i = newrows; i < rows; i++) {
400 line = delpos234(screen, 0);
401 addpos234(scrollback, line, sblen++);
404 assert(count234(screen) == newrows);
405 while (sblen > newsavelines) {
406 line = delpos234(scrollback, 0);
410 assert(count234(scrollback) <= newsavelines);
411 debug(("screen:%d scrollback:%d\n", count234(screen), count234(scrollback)));
414 newdisp = smalloc (newrows*(newcols+1)*TSIZE);
415 for (i=0; i<newrows*(newcols+1); i++)
416 newdisp[i] = ATTR_INVALID;
420 newwant = smalloc (newrows*(newcols+1)*TSIZE);
421 for (i=0; i<newrows*(newcols+1); i++)
422 newwant[i] = ATTR_INVALID;
426 newalt = newtree234(NULL);
427 for (i=0; i<newrows; i++) {
428 line = smalloc(TSIZE * (newcols+2));
430 for (j = 0; j <= newcols; j++)
431 line[j+1] = erase_char;
432 addpos234(newalt, line, i);
435 while (NULL != (line = delpos234(alt_screen, 0)))
437 freetree234(alt_screen);
442 selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) );
444 tabs = srealloc (tabs, newcols*sizeof(*tabs));
447 for (i = (cols > 0 ? cols : 0); i < newcols; i++)
448 tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
452 curs.y += newrows - rows;
455 if (curs.y >= newrows)
457 if (curs.x >= newcols)
460 wrapnext = alt_wnext = FALSE;
464 savelines = newsavelines;
467 swap_screen(save_alt_which);
476 static void swap_screen (int which) {
480 if (which == alt_which)
485 ttr = alt_screen; alt_screen = screen; screen = ttr;
486 t = curs.x; curs.x = alt_x; alt_x = t;
487 t = curs.y; curs.y = alt_y; alt_y = t;
488 t = marg_t; marg_t = alt_t; alt_t = t;
489 t = marg_b; marg_b = alt_b; alt_b = t;
490 t = dec_om; dec_om = alt_om; alt_om = t;
491 t = wrap; wrap = alt_wrap; alt_wrap = t;
492 t = wrapnext; wrapnext = alt_wnext; alt_wnext = t;
493 t = insert; insert = alt_ins; alt_ins = t;
494 t = cset; cset = alt_cset; alt_cset = t;
500 * Update the scroll bar.
502 static void update_sbar(void) {
505 nscroll = count234(scrollback);
507 set_sbar (nscroll + rows, nscroll + disptop, rows);
511 * Check whether the region bounded by the two pointers intersects
512 * the scroll region, and de-select the on-screen selection if so.
514 static void check_selection (pos from, pos to) {
515 if (poslt(from, selend) && poslt(selstart, to))
520 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
521 * for backward.) `sb' is TRUE if the scrolling is permitted to
522 * affect the scrollback buffer.
524 * NB this function invalidates all pointers into lines of the
525 * screen data structures. In particular, you MUST call fix_cpos
526 * after calling scroll() and before doing anything else that
527 * uses the cpos shortcut pointer.
529 static void scroll (int topline, int botline, int lines, int sb) {
530 unsigned long *line, *line2;
533 if (topline != 0 || alt_which != 0)
538 line = delpos234(screen, botline);
539 for (i = 0; i < cols; i++)
540 line[i+1] = erase_char;
542 addpos234(screen, line, topline);
544 if (selstart.y >= topline && selstart.y <= botline) {
546 if (selstart.y > botline) {
547 selstart.y = botline;
551 if (selend.y >= topline && selend.y <= botline) {
553 if (selend.y > botline) {
563 line = delpos234(screen, topline);
564 if (sb && savelines > 0) {
565 int sblen = count234(scrollback);
567 * We must add this line to the scrollback. We'll
568 * remove a line from the top of the scrollback to
569 * replace it, or allocate a new one if the
570 * scrollback isn't full.
572 if (sblen == savelines) {
573 sblen--, line2 = delpos234(scrollback, 0);
575 line2 = smalloc(TSIZE * (cols+2));
578 addpos234(scrollback, line, sblen);
581 for (i = 0; i < cols; i++)
582 line[i+1] = erase_char;
584 addpos234(screen, line, botline);
586 if (selstart.y >= topline && selstart.y <= botline) {
588 if (selstart.y < topline) {
589 selstart.y = topline;
593 if (selend.y >= topline && selend.y <= botline) {
595 if (selend.y < topline) {
607 * Move the cursor to a given position, clipping at boundaries. We
608 * may or may not want to clip at the scroll margin: marg_clip is 0
609 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
610 * even _being_ outside the margins.
612 static void move (int x, int y, int marg_clip) {
618 if ((curs.y >= marg_t || marg_clip == 2) && y < marg_t)
620 if ((curs.y <= marg_b || marg_clip == 2) && y > marg_b)
634 * Save or restore the cursor and SGR mode.
636 static void save_cursor(int save) {
639 save_attr = curr_attr;
641 save_csattr = cset_attr[cset];
644 /* Make sure the window hasn't shrunk since the save */
645 if (curs.x >= cols) curs.x = cols-1;
646 if (curs.y >= rows) curs.y = rows-1;
648 curr_attr = save_attr;
650 cset_attr[cset] = save_csattr;
652 if (use_bce) erase_char = (' ' |(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
657 * Erase a large portion of the screen: the whole screen, or the
658 * whole line, or parts thereof.
660 static void erase_lots (int line_only, int from_begin, int to_end) {
663 unsigned long *ldata;
684 check_selection (start, end);
686 /* Clear screen also forces a full window redraw, just in case. */
687 if (start.y == 0 && start.x == 0 && end.y == rows)
690 ldata = lineptr(start.y);
691 while (poslt(start, end)) {
692 if (start.y == cols && !erase_lattr)
693 ldata[start.x] &= ~ATTR_WRAPPED;
695 ldata[start.x] = erase_char;
696 if (incpos(start) && start.y < rows)
697 ldata = lineptr(start.y);
702 * Insert or delete characters within the current line. n is +ve if
703 * insertion is desired, and -ve for deletion.
705 static void insch (int n) {
706 int dir = (n < 0 ? -1 : +1);
709 unsigned long *ldata;
711 n = (n < 0 ? -n : n);
712 if (n > cols - curs.x)
714 m = cols - curs.x - n;
716 cursplus.x = curs.x + n;
717 check_selection (curs, cursplus);
718 ldata = lineptr(curs.y);
720 memmove (ldata + curs.x, ldata + curs.x + n, m*TSIZE);
722 ldata[curs.x + m++] = erase_char;
724 memmove (ldata + curs.x + n, ldata + curs.x, m*TSIZE);
726 ldata[curs.x + n] = erase_char;
731 * Toggle terminal mode `mode' to state `state'. (`query' indicates
732 * whether the mode is a DEC private one or a normal one.)
734 static void toggle_mode (int mode, int query, int state) {
736 if (query) switch (mode) {
737 case 1: /* application cursor keys */
738 app_cursor_keys = state;
740 case 2: /* VT52 mode */
743 case 3: /* 80/132 columns */
745 request_resize (state ? 132 : 80, rows, 1);
748 case 5: /* reverse video */
750 * Toggle reverse video. If we receive an OFF within the
751 * visual bell timeout period after an ON, we trigger an
752 * effective visual bell, so that ESC[?5hESC[?5l will
753 * always be an actually _visible_ visual bell.
755 ticks = GetTickCount();
756 if (rvideo && !state && /* we're turning it off */
757 ticks < rvbell_timeout) { /* and it's not long since it was turned on */
758 in_vbell = TRUE; /* we may clear rvideo but we set in_vbell */
759 if (vbell_timeout < rvbell_timeout) /* don't move vbell end forward */
760 vbell_timeout = rvbell_timeout; /* vbell end is at least then */
761 } else if (!rvideo && state) {
762 /* This is an ON, so we notice the time and save it. */
763 rvbell_timeout = ticks + VBELL_TIMEOUT;
766 seen_disp_event = TRUE;
767 if (state) term_update();
769 case 6: /* DEC origin mode */
772 case 7: /* auto wrap */
775 case 8: /* auto key repeat */
778 case 10: /* set local edit mode */
779 term_editing = state;
780 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
782 case 25: /* enable/disable cursor */
783 compatibility2(OTHER,VT220);
785 seen_disp_event = TRUE;
787 case 47: /* alternate screen */
788 compatibility(OTHER);
793 } else switch (mode) {
794 case 4: /* set insert mode */
795 compatibility(VT102);
798 case 12: /* set echo mode */
799 term_echoing = !state;
800 ldisc_send(NULL, 0); /* cause ldisc to notice changes */
802 case 20: /* Return sends ... */
803 cr_lf_return = state;
809 * Process an OSC sequence: set window title or icon name.
811 static void do_osc(void) {
814 wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0];
816 osc_string[osc_strlen] = '\0';
817 switch (esc_args[0]) {
820 set_icon (osc_string);
821 if (esc_args[0] == 1)
823 /* fall through: parameter 0 means set both */
826 set_title (osc_string);
833 * Remove everything currently in `inbuf' and stick it up on the
834 * in-memory display. There's a big state machine in here to
835 * process escape sequences...
837 void term_out(void) {
840 for(inbuf_reap = 0; inbuf_reap < inbuf_head; inbuf_reap++)
842 c = inbuf[inbuf_reap];
845 * Optionally log the session traffic to a file. Useful for
846 * debugging and possibly also useful for actual logging.
848 logtraffic((unsigned char)c, LGTYP_DEBUG);
850 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
851 * be able to display 8-bit characters, but I'll let that go 'cause
854 if( ( (c&0x60) == 0 || c == '\177') &&
855 termstate < DO_CTRLS &&
856 ( (c&0x80) == 0 || has_compat(VT220))) {
858 case '\005': /* terminal type query */
859 /* Strictly speaking this is VT100 but a VT100 defaults to
860 * no response. Other terminals respond at their option.
862 * Don't put a CR in the default string as this tends to
863 * upset some weird software.
865 * An xterm returns "xterm" (5 characters)
867 compatibility(ANSIMIN);
869 char abuf[256], *s, *d;
871 for(s=cfg.answerback, d=abuf; *s; s++) {
874 if (*s >= 'a' && *s <= 'z')
875 *d++ = (*s - ('a'-1));
876 else if ((*s >='@' && *s<='_') ||
877 *s == '?' || (*s&0x80))
883 else if (*s == '^') {
887 *d++ = xlat_kbd2tty((unsigned char)*s);
889 ldisc_send (abuf, d-abuf);
894 struct beeptime *newbeep;
897 ticks = GetTickCount();
899 if (!beep_overloaded) {
900 newbeep = smalloc(sizeof(struct beeptime));
901 newbeep->ticks = ticks;
902 newbeep->next = NULL;
906 beeptail->next = newbeep;
912 * Throw out any beeps that happened more than
916 beephead->ticks < ticks - cfg.bellovl_t*1000) {
917 struct beeptime *tmp = beephead;
918 beephead = tmp->next;
925 if (cfg.bellovl && beep_overloaded &&
926 ticks-lastbeep >= cfg.bellovl_s * 1000) {
928 * If we're currently overloaded and the
929 * last beep was more than s seconds ago,
930 * leave overload mode.
932 beep_overloaded = FALSE;
933 } else if (cfg.bellovl && !beep_overloaded &&
934 nbeeps >= cfg.bellovl_n) {
936 * Now, if we have n or more beeps
937 * remaining in the queue, go into overload
940 beep_overloaded = TRUE;
945 * Perform an actual beep if we're not overloaded.
947 if ((!cfg.bellovl || !beep_overloaded) && cfg.beep != 0) {
950 else if(cfg.beep == 2) {
952 vbell_timeout = ticks + VBELL_TIMEOUT;
960 if (curs.x == 0 && curs.y == 0)
962 else if (curs.x == 0 && curs.y > 0)
963 curs.x = cols-1, curs.y--;
969 seen_disp_event = TRUE;
972 compatibility(VT100);
976 compatibility(VT100);
981 termstate = VT52_ESC;
983 compatibility(ANSIMIN);
984 termstate = SEEN_ESC;
988 compatibility(VT220);
989 termstate = SEEN_CSI;
991 esc_args[0] = ARG_DEFAULT;
995 compatibility(VT220);
996 termstate = SEEN_OSC;
1003 seen_disp_event = TRUE;
1005 logtraffic((unsigned char)c,LGTYP_ASCII);
1009 compatibility(VT100);
1011 if (curs.y == marg_b)
1012 scroll (marg_t, marg_b, 1, TRUE);
1013 else if (curs.y < rows-1)
1019 seen_disp_event = 1;
1021 logtraffic((unsigned char)c,LGTYP_ASCII);
1025 pos old_curs = curs;
1026 unsigned long *ldata = lineptr(curs.y);
1030 } while (curs.x < cols-1 && !tabs[curs.x]);
1032 if ((ldata[cols] & LATTR_MODE) != LATTR_NORM)
1034 if (curs.x >= cols/2)
1044 check_selection (old_curs, curs);
1046 seen_disp_event = TRUE;
1048 case '\177': /* Destructive backspace
1049 This does nothing on a real VT100 */
1050 compatibility(OTHER);
1051 if (curs.x && !wrapnext) curs.x--;
1054 *cpos = (' ' | curr_attr | ATTR_ASCII);
1058 else switch (termstate) {
1060 /* Only graphic characters get this far, ctrls are stripped above */
1061 if (wrapnext && wrap) {
1062 cpos[1] |= ATTR_WRAPPED;
1063 if (curs.y == marg_b)
1064 scroll (marg_t, marg_b, 1, TRUE);
1065 else if (curs.y < rows-1)
1073 if (selstate != NO_SELECTION) {
1074 pos cursplus = curs;
1076 check_selection (curs, cursplus);
1078 switch (cset_attr[cset]) {
1080 * Linedraw characters are different from 'ESC ( B'
1081 * only for a small range. For ones outside that
1082 * range, make sure we use the same font as well as
1083 * the same encoding.
1086 if (c<0x5f || c>0x7F)
1087 *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
1090 *cpos++ = ' ' | curr_attr | ATTR_ASCII;
1092 *cpos++ = ((unsigned char)c) | curr_attr | ATTR_LINEDRW;
1095 /* If UK-ASCII, make the '#' a LineDraw Pound */
1097 *cpos++ = '}' | curr_attr | ATTR_LINEDRW;
1102 *cpos = xlat_tty2scr((unsigned char)c) | curr_attr |
1103 (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII);
1104 logtraffic((unsigned char)c, LGTYP_ASCII);
1109 if (curs.x == cols) {
1114 seen_disp_event = 1;
1118 termstate = TOPLEVEL;
1122 * This state is virtually identical to SEEN_ESC, with the
1123 * exception that we have an OSC sequence in the pipeline,
1124 * and _if_ we see a backslash, we process it.
1128 termstate = TOPLEVEL;
1131 /* else fall through */
1133 termstate = TOPLEVEL;
1135 case ' ': /* some weird sequence? */
1136 compatibility(VT220);
1137 termstate = IGNORE_NEXT;
1139 case '[': /* enter CSI mode */
1140 termstate = SEEN_CSI;
1142 esc_args[0] = ARG_DEFAULT;
1145 case ']': /* xterm escape sequences */
1146 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1147 compatibility(OTHER);
1148 termstate = SEEN_OSC;
1151 case '(': /* should set GL */
1152 compatibility(VT100);
1155 case ')': /* should set GR */
1156 compatibility(VT100);
1159 case '7': /* save cursor */
1160 compatibility(VT100);
1163 case '8': /* restore cursor */
1164 compatibility(VT100);
1165 save_cursor (FALSE);
1166 seen_disp_event = TRUE;
1169 compatibility(VT100);
1170 app_keypad_keys = TRUE;
1173 compatibility(VT100);
1174 app_keypad_keys = FALSE;
1176 case 'D': /* exactly equivalent to LF */
1177 compatibility(VT100);
1178 if (curs.y == marg_b)
1179 scroll (marg_t, marg_b, 1, TRUE);
1180 else if (curs.y < rows-1)
1184 seen_disp_event = TRUE;
1186 case 'E': /* exactly equivalent to CR-LF */
1187 compatibility(VT100);
1189 if (curs.y == marg_b)
1190 scroll (marg_t, marg_b, 1, TRUE);
1191 else if (curs.y < rows-1)
1195 seen_disp_event = TRUE;
1197 case 'M': /* reverse index - backwards LF */
1198 compatibility(VT100);
1199 if (curs.y == marg_t)
1200 scroll (marg_t, marg_b, -1, TRUE);
1201 else if (curs.y > 0)
1205 seen_disp_event = TRUE;
1207 case 'Z': /* terminal type query */
1208 compatibility(VT100);
1209 ldisc_send (id_string, strlen(id_string));
1211 case 'c': /* restore power-on settings */
1212 compatibility(VT100);
1215 request_resize (80, rows, 1);
1220 seen_disp_event = TRUE;
1222 case '#': /* ESC # 8 fills screen with Es :-) */
1223 compatibility(VT100);
1224 termstate = SEEN_ESCHASH;
1226 case 'H': /* set a tab */
1227 compatibility(VT100);
1228 tabs[curs.x] = TRUE;
1233 termstate = TOPLEVEL; /* default */
1236 if (esc_nargs <= ARGS_MAX) {
1237 if (esc_args[esc_nargs-1] == ARG_DEFAULT)
1238 esc_args[esc_nargs-1] = 0;
1239 esc_args[esc_nargs-1] =
1240 10 * esc_args[esc_nargs-1] + c - '0';
1242 termstate = SEEN_CSI;
1246 if (++esc_nargs <= ARGS_MAX)
1247 esc_args[esc_nargs-1] = ARG_DEFAULT;
1248 termstate = SEEN_CSI;
1252 if( esc_query ) esc_query = -1;
1253 else if( c == '?' ) esc_query = TRUE;
1255 termstate = SEEN_CSI;
1257 else switch (ANSI(c,esc_query)) {
1258 case 'A': /* move up N lines */
1259 move (curs.x, curs.y - def(esc_args[0], 1), 1);
1260 seen_disp_event = TRUE;
1262 case 'e': /* move down N lines */
1263 compatibility(ANSI);
1265 move (curs.x, curs.y + def(esc_args[0], 1), 1);
1266 seen_disp_event = TRUE;
1268 case 'a': /* move right N cols */
1269 compatibility(ANSI);
1271 move (curs.x + def(esc_args[0], 1), curs.y, 1);
1272 seen_disp_event = TRUE;
1274 case 'D': /* move left N cols */
1275 move (curs.x - def(esc_args[0], 1), curs.y, 1);
1276 seen_disp_event = TRUE;
1278 case 'E': /* move down N lines and CR */
1279 compatibility(ANSI);
1280 move (0, curs.y + def(esc_args[0], 1), 1);
1281 seen_disp_event = TRUE;
1283 case 'F': /* move up N lines and CR */
1284 compatibility(ANSI);
1285 move (0, curs.y - def(esc_args[0], 1), 1);
1286 seen_disp_event = TRUE;
1288 case 'G': case '`': /* set horizontal posn */
1289 compatibility(ANSI);
1290 move (def(esc_args[0], 1) - 1, curs.y, 0);
1291 seen_disp_event = TRUE;
1293 case 'd': /* set vertical posn */
1294 compatibility(ANSI);
1295 move (curs.x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1297 seen_disp_event = TRUE;
1299 case 'H': case 'f': /* set horz and vert posns at once */
1301 esc_args[1] = ARG_DEFAULT;
1302 move (def(esc_args[1], 1) - 1,
1303 (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
1305 seen_disp_event = TRUE;
1307 case 'J': /* erase screen or parts of it */
1309 unsigned int i = def(esc_args[0], 0) + 1;
1312 erase_lots(FALSE, !!(i & 2), !!(i & 1));
1315 seen_disp_event = TRUE;
1317 case 'K': /* erase line or parts of it */
1319 unsigned int i = def(esc_args[0], 0) + 1;
1322 erase_lots(TRUE, !!(i & 2), !!(i & 1));
1324 seen_disp_event = TRUE;
1326 case 'L': /* insert lines */
1327 compatibility(VT102);
1328 if (curs.y <= marg_b)
1329 scroll (curs.y, marg_b, -def(esc_args[0], 1), FALSE);
1331 seen_disp_event = TRUE;
1333 case 'M': /* delete lines */
1334 compatibility(VT102);
1335 if (curs.y <= marg_b)
1336 scroll (curs.y, marg_b, def(esc_args[0], 1), TRUE);
1338 seen_disp_event = TRUE;
1340 case '@': /* insert chars */
1341 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1342 compatibility(VT102);
1343 insch (def(esc_args[0], 1));
1344 seen_disp_event = TRUE;
1346 case 'P': /* delete chars */
1347 compatibility(VT102);
1348 insch (-def(esc_args[0], 1));
1349 seen_disp_event = TRUE;
1351 case 'c': /* terminal type query */
1352 compatibility(VT100);
1353 /* This is the response for a VT102 */
1354 ldisc_send (id_string, strlen(id_string));
1356 case 'n': /* cursor position query */
1357 if (esc_args[0] == 6) {
1359 sprintf (buf, "\033[%d;%dR", curs.y + 1, curs.x + 1);
1360 ldisc_send (buf, strlen(buf));
1362 else if (esc_args[0] == 5) {
1363 ldisc_send ("\033[0n", 4);
1366 case 'h': /* toggle modes to high */
1368 compatibility(VT100);
1371 for (i=0; i<esc_nargs; i++)
1372 toggle_mode (esc_args[i], esc_query, TRUE);
1375 case 'l': /* toggle modes to low */
1377 compatibility(VT100);
1380 for (i=0; i<esc_nargs; i++)
1381 toggle_mode (esc_args[i], esc_query, FALSE);
1384 case 'g': /* clear tabs */
1385 compatibility(VT100);
1386 if (esc_nargs == 1) {
1387 if (esc_args[0] == 0) {
1388 tabs[curs.x] = FALSE;
1389 } else if (esc_args[0] == 3) {
1391 for (i = 0; i < cols; i++)
1396 case 'r': /* set scroll margins */
1397 compatibility(VT100);
1398 if (esc_nargs <= 2) {
1400 top = def(esc_args[0], 1) - 1;
1401 bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows :
1402 def(esc_args[1], rows)) - 1;
1405 /* VTTEST Bug 9 - if region is less than 2 lines
1406 * don't change region.
1413 * I used to think the cursor should be
1414 * placed at the top of the newly marginned
1415 * area. Apparently not: VMS TPU falls over
1418 * Well actually it should for Origin mode - RDB
1420 curs.y = (dec_om ? marg_t : 0);
1422 seen_disp_event = TRUE;
1426 case 'm': /* set graphics rendition */
1429 * A VT100 without the AVO only had one attribute, either
1430 * underline or reverse video depending on the cursor type,
1431 * this was selected by CSI 7m.
1434 * This is DIM on the VT100-AVO and VT102
1436 * This is BLINK on the VT100-AVO and VT102+
1438 * This is INVIS on the VT100-AVO and VT102
1440 * This like 22 disables BOLD, DIM and INVIS
1442 * The ANSI colours appear on any terminal that has colour
1443 * (obviously) but the interaction between sgr0 and the
1444 * colours varies but is usually related to the background
1445 * colour erase item.
1446 * The interaction between colour attributes and the mono
1447 * ones is also very implementation dependent.
1449 * The 39 and 49 attributes are likely to be unimplemented.
1452 for (i=0; i<esc_nargs; i++) {
1453 switch (def(esc_args[i], 0)) {
1454 case 0: /* restore defaults */
1455 curr_attr = ATTR_DEFAULT; break;
1456 case 1: /* enable bold */
1457 compatibility(VT100AVO);
1458 curr_attr |= ATTR_BOLD; break;
1459 case 21: /* (enable double underline) */
1460 compatibility(OTHER);
1461 case 4: /* enable underline */
1462 compatibility(VT100AVO);
1463 curr_attr |= ATTR_UNDER; break;
1464 case 5: /* enable blink */
1465 compatibility(VT100AVO);
1466 curr_attr |= ATTR_BLINK; break;
1467 case 7: /* enable reverse video */
1468 curr_attr |= ATTR_REVERSE; break;
1469 case 22: /* disable bold */
1470 compatibility2(OTHER,VT220);
1471 curr_attr &= ~ATTR_BOLD; break;
1472 case 24: /* disable underline */
1473 compatibility2(OTHER,VT220);
1474 curr_attr &= ~ATTR_UNDER; break;
1475 case 25: /* disable blink */
1476 compatibility2(OTHER,VT220);
1477 curr_attr &= ~ATTR_BLINK; break;
1478 case 27: /* disable reverse video */
1479 compatibility2(OTHER,VT220);
1480 curr_attr &= ~ATTR_REVERSE; break;
1481 case 30: case 31: case 32: case 33:
1482 case 34: case 35: case 36: case 37:
1484 curr_attr &= ~ATTR_FGMASK;
1485 curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT;
1487 case 39: /* default-foreground */
1488 curr_attr &= ~ATTR_FGMASK;
1489 curr_attr |= ATTR_DEFFG;
1491 case 40: case 41: case 42: case 43:
1492 case 44: case 45: case 46: case 47:
1494 curr_attr &= ~ATTR_BGMASK;
1495 curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT;
1497 case 49: /* default-background */
1498 curr_attr &= ~ATTR_BGMASK;
1499 curr_attr |= ATTR_DEFBG;
1506 (curr_attr&(ATTR_FGMASK|ATTR_BGMASK|ATTR_BLINK))
1510 case 's': /* save cursor */
1513 case 'u': /* restore cursor */
1514 save_cursor (FALSE);
1515 seen_disp_event = TRUE;
1517 case 't': /* set page size - ie window height */
1519 * VT340/VT420 sequence DECSLPP, DEC only allows values
1520 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1521 * illegal values (eg first arg 1..9) for window changing
1524 compatibility(VT340TEXT);
1525 if (esc_nargs<=1 && (esc_args[0]<1 || esc_args[0]>=24)) {
1526 request_resize (cols, def(esc_args[0], 24), 0);
1530 case ANSI('|', '*'):
1531 /* VT420 sequence DECSNLS
1532 * Set number of lines on screen
1533 * VT420 uses VGA like hardware and can support any size in
1534 * reasonable range (24..49 AIUI) with no default specified.
1536 compatibility(VT420);
1537 if (esc_nargs==1 && esc_args[0]>0) {
1538 request_resize (cols, def(esc_args[0], cfg.height), 0);
1542 case ANSI('|', '$'):
1543 /* VT340/VT420 sequence DECSCPP
1544 * Set number of columns per page
1545 * Docs imply range is only 80 or 132, but I'll allow any.
1547 compatibility(VT340TEXT);
1549 request_resize (def(esc_args[0], cfg.width), rows, 0);
1553 case 'X': /* write N spaces w/o moving cursor */
1554 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1555 compatibility(ANSIMIN);
1557 int n = def(esc_args[0], 1);
1559 unsigned long *p = cpos;
1560 if (n > cols - curs.x)
1564 check_selection (curs, cursplus);
1567 seen_disp_event = TRUE;
1570 case 'x': /* report terminal characteristics */
1571 compatibility(VT100);
1574 int i = def(esc_args[0], 0);
1575 if (i == 0 || i == 1) {
1576 strcpy (buf, "\033[2;1;1;112;112;1;0x");
1578 ldisc_send (buf, 20);
1583 compatibility(OTHER);
1584 use_bce = (esc_args[0]<=0);
1585 erase_char = ERASE_CHAR;
1587 erase_char = (' '|(curr_attr&(ATTR_FGMASK|ATTR_BGMASK)));
1590 compatibility(OTHER);
1591 blink_is_real = (esc_args[0]>=1);
1594 /* Allow the host to make this emulator a 'perfect' VT102.
1595 * This first appeared in the VT220, but we do need to get
1596 * back to PuTTY mode so I won't check it.
1598 * The arg in 40..42 are a PuTTY extension.
1599 * The 2nd arg, 8bit vs 7bit is not checked.
1601 * Setting VT102 mode should also change the Fkeys to
1602 * generate PF* codes as a real VT102 has no Fkeys.
1603 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1606 * Note ESC c will NOT change this!
1609 switch (esc_args[0]) {
1610 case 61: compatibility_level &= ~TM_VTXXX;
1611 compatibility_level |= TM_VT102; break;
1612 case 62: compatibility_level &= ~TM_VTXXX;
1613 compatibility_level |= TM_VT220; break;
1615 default: if( esc_args[0] > 60 && esc_args[0] < 70 )
1616 compatibility_level |= TM_VTXXX;
1619 case 40: compatibility_level &= TM_VTXXX; break;
1620 case 41: compatibility_level = TM_PUTTY; break;
1621 case 42: compatibility_level = TM_SCOANSI; break;
1624 compatibility_level = TM_PUTTY; break;
1628 /* Change the response to CSI c */
1629 if (esc_args[0] == 50) {
1632 strcpy(id_string, "\033[?");
1633 for (i=1; i<esc_nargs; i++) {
1634 if (i!=1) strcat(id_string, ";");
1635 sprintf(lbuf, "%d", esc_args[i]);
1636 strcat(id_string, lbuf);
1638 strcat(id_string, "c");
1642 /* Is this a good idea ?
1643 * Well we should do a soft reset at this point ...
1645 if (!has_compat(VT420) && has_compat(VT100)) {
1646 if (reset_132) request_resize (132, 24, 1);
1647 else request_resize ( 80, 24, 1);
1655 /* VT100 only here, checked above */
1658 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR;
1661 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW;
1664 default: /* specifically, 'B' */
1665 cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII;
1668 if( !has_compat(VT220) || c != '%' )
1669 termstate = TOPLEVEL;
1674 case 'P': /* Linux palette sequence */
1675 termstate = SEEN_OSC_P;
1678 case 'R': /* Linux palette reset */
1681 termstate = TOPLEVEL;
1683 case 'W': /* word-set */
1684 termstate = SEEN_OSC_W;
1687 case '0': case '1': case '2': case '3': case '4':
1688 case '5': case '6': case '7': case '8': case '9':
1689 esc_args[0] = 10 * esc_args[0] + c - '0';
1693 * Grotty hack to support xterm and DECterm title
1694 * sequences concurrently.
1696 if (esc_args[0] == 2) {
1700 /* else fall through */
1702 termstate = OSC_STRING;
1708 * This OSC stuff is EVIL. It takes just one character to get into
1709 * sysline mode and it's not initially obvious how to get out.
1710 * So I've added CR and LF as string aborts.
1711 * This shouldn't effect compatibility as I believe embedded
1712 * control characters are supposed to be interpreted (maybe?)
1713 * and they don't display anything useful anyway.
1717 if (c == '\n' || c == '\r') {
1718 termstate = TOPLEVEL;
1719 } else if (c == 0234 || c == '\007' ) {
1721 * These characters terminate the string; ST and BEL
1722 * terminate the sequence and trigger instant
1723 * processing of it, whereas ESC goes back to SEEN_ESC
1724 * mode unless it is followed by \, in which case it is
1725 * synonymous with ST in the first place.
1728 termstate = TOPLEVEL;
1729 } else if (c == '\033')
1730 termstate = OSC_MAYBE_ST;
1731 else if (osc_strlen < OSC_STR_MAX)
1732 osc_string[osc_strlen++] = c;
1736 int max = (osc_strlen == 0 ? 21 : 16);
1738 if (c >= '0' && c <= '9')
1740 else if (c >= 'A' && c <= 'A'+max-10)
1742 else if (c >= 'a' && c <= 'a'+max-10)
1745 termstate = TOPLEVEL;
1746 osc_string[osc_strlen++] = val;
1747 if (osc_strlen >= 7) {
1748 palette_set (osc_string[0],
1749 osc_string[1] * 16 + osc_string[2],
1750 osc_string[3] * 16 + osc_string[4],
1751 osc_string[5] * 16 + osc_string[6]);
1753 termstate = TOPLEVEL;
1759 case '0': case '1': case '2': case '3': case '4':
1760 case '5': case '6': case '7': case '8': case '9':
1761 esc_args[0] = 10 * esc_args[0] + c - '0';
1764 termstate = OSC_STRING;
1770 unsigned long nlattr;
1771 unsigned long *ldata;
1777 for (i = 0; i < rows; i++) {
1779 for (j = 0; j < cols; j++)
1780 ldata[j] = ATTR_DEFAULT | 'E';
1784 seen_disp_event = TRUE;
1785 scrtop.x = scrtop.y = 0;
1786 scrbot.x = 0; scrbot.y = rows;
1787 check_selection (scrtop, scrbot);
1790 case '3': nlattr = LATTR_TOP; goto lattr_common;
1791 case '4': nlattr = LATTR_BOT; goto lattr_common;
1792 case '5': nlattr = LATTR_NORM; goto lattr_common;
1793 case '6': nlattr = LATTR_WIDE;
1796 ldata = lineptr(curs.y);
1797 ldata[cols] &= ~LATTR_MODE;
1798 ldata[cols] |= nlattr;
1801 termstate = TOPLEVEL;
1804 termstate = TOPLEVEL;
1805 seen_disp_event = TRUE;
1808 move (curs.x, curs.y - 1, 1);
1811 move (curs.x, curs.y + 1, 1);
1814 move (curs.x + 1, curs.y, 1);
1817 move (curs.x - 1, curs.y, 1);
1820 cset_attr[cset=0] = ATTR_LINEDRW;
1823 cset_attr[cset=0] = ATTR_ASCII;
1830 scroll (0, rows-1, -1, TRUE);
1831 else if (curs.y > 0)
1837 erase_lots(FALSE, FALSE, TRUE);
1841 erase_lots(TRUE, FALSE, TRUE);
1844 /* XXX Print cursor line */
1847 /* XXX Start controller mode */
1850 /* XXX Stop controller mode */
1853 termstate = VT52_Y1;
1856 ldisc_send ("\033/Z", 3);
1859 app_keypad_keys = TRUE;
1862 app_keypad_keys = FALSE;
1865 /* XXX This should switch to VT100 mode not current or default
1866 * VT mode. But this will only have effect in a VT220+
1872 /* XXX Enter auto print mode */
1875 /* XXX Exit auto print mode */
1878 /* XXX Print screen */
1883 termstate = VT52_Y2;
1884 move(curs.x, c-' ', 0);
1887 termstate = TOPLEVEL;
1888 move(c-' ', curs.y, 0);
1891 if (selstate != NO_SELECTION) {
1892 pos cursplus = curs;
1894 check_selection (curs, cursplus);
1901 * Compare two lines to determine whether they are sufficiently
1902 * alike to scroll-optimise one to the other. Return the degree of
1905 static int linecmp (unsigned long *a, unsigned long *b) {
1908 for (i=n=0; i < cols; i++)
1909 n += (*a++ == *b++);
1914 * Given a context, update the window. Out of paranoia, we don't
1915 * allow WM_PAINT responses to do scrolling optimisations.
1917 static void do_paint (Context ctx, int may_optimise) {
1918 int i, j, start, our_curs_y;
1919 unsigned long attr, rv, cursor;
1925 * Check the visual bell state.
1928 ticks = GetTickCount();
1929 if (ticks - vbell_timeout >= 0)
1934 * screen array, disptop, scrtop,
1936 * cfg.blinkpc, blink_is_real, tblinker,
1937 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus
1941 if (blinker || !cfg.blink_cur)
1942 cursor = ATTR_ACTCURS;
1947 cursor = ATTR_PASCURS;
1949 cursor |= ATTR_RIGHTCURS;
1953 rv = (!rvideo ^ !in_vbell ? ATTR_REVERSE : 0);
1954 our_curs_y = curs.y - disptop;
1956 for (i=0; i<rows; i++) {
1957 unsigned long *ldata;
1959 scrpos.y = i + disptop;
1960 ldata = lineptr(scrpos.y);
1961 lattr = (ldata[cols] & LATTR_MODE);
1962 for (j=0; j<=cols; j++) {
1963 unsigned long d = ldata[j];
1964 int idx = i*(cols+1)+j;
1967 wanttext[idx] = lattr | (((d &~ ATTR_WRAPPED) ^ rv
1968 ^ (posle(selstart, scrpos) &&
1969 poslt(scrpos, selend) ?
1970 ATTR_REVERSE : 0)) |
1971 (i==our_curs_y && j==curs.x ? cursor : 0));
1972 if (blink_is_real) {
1973 if (has_focus && tblinker && (wanttext[idx]&ATTR_BLINK) )
1975 wanttext[idx] &= ATTR_MASK;
1976 wanttext[idx] += ' ';
1978 wanttext[idx] &= ~ATTR_BLINK;
1984 * We would perform scrolling optimisations in here, if they
1985 * didn't have a nasty tendency to cause the whole sodding
1986 * program to hang for a second at speed-critical moments.
1987 * We'll leave it well alone...
1990 for (i=0; i<rows; i++) {
1991 int idx = i*(cols+1);
1992 int lattr = (wanttext[idx+cols] & LATTR_MODE);
1994 for (j=0; j<=cols; j++,idx++) {
1995 unsigned long t = wanttext[idx];
1996 int needs_update = (j < cols && t != disptext[idx]);
1997 int keep_going = (start != -1 && needs_update &&
1998 (t & ATTR_MASK) == attr &&
1999 j-start < sizeof(ch));
2000 if (start != -1 && !keep_going) {
2001 do_text (ctx, start, i, ch, j-start, attr, lattr);
2007 attr = t & ATTR_MASK;
2009 ch[j-start] = (char) (t & CHAR_MASK);
2017 * Flick the switch that says if blinking things should be shown or hidden.
2020 void term_blink(int flg) {
2021 static long last_blink = 0;
2022 static long last_tblink = 0;
2023 long now, blink_diff;
2025 now = GetTickCount();
2026 blink_diff = now-last_tblink;
2028 /* Make sure the text blinks no more than 2Hz */
2029 if (blink_diff<0 || blink_diff>450)
2032 tblinker = !tblinker;
2041 blink_diff = now-last_blink;
2043 /* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
2044 if (blink_diff>=0 && blink_diff<(long)GetCaretBlinkTime())
2052 * Invalidate the whole screen so it will be repainted in full.
2054 void term_invalidate(void) {
2057 for (i=0; i<rows*(cols+1); i++)
2058 disptext[i] = ATTR_INVALID;
2062 * Paint the window in response to a WM_PAINT message.
2064 void term_paint (Context ctx, int l, int t, int r, int b) {
2065 int i, j, left, top, right, bottom;
2067 left = l / font_width;
2068 right = (r - 1) / font_width;
2069 top = t / font_height;
2070 bottom = (b - 1) / font_height;
2071 for (i = top; i <= bottom && i < rows ; i++)
2073 if ( (disptext[i*(cols+1)+cols]&LATTR_MODE) == LATTR_NORM)
2074 for (j = left; j <= right && j < cols ; j++)
2075 disptext[i*(cols+1)+j] = ATTR_INVALID;
2077 for (j = left/2; j <= right/2+1 && j < cols ; j++)
2078 disptext[i*(cols+1)+j] = ATTR_INVALID;
2081 /* This should happen soon enough, also for some reason it sometimes
2082 * fails to actually do anything when re-sizing ... painting the wrong
2084 do_paint (ctx, FALSE);
2089 * Attempt to scroll the scrollback. The second parameter gives the
2090 * position we want to scroll to; the first is +1 to denote that
2091 * this position is relative to the beginning of the scrollback, -1
2092 * to denote it is relative to the end, and 0 to denote that it is
2093 * relative to the current position.
2095 void term_scroll (int rel, int where) {
2096 int sbtop = -count234(scrollback);
2098 disptop = (rel < 0 ? 0 :
2099 rel > 0 ? sbtop : disptop) + where;
2100 if (disptop < sbtop)
2108 static void clipme(pos top, pos bottom, char *workbuf) {
2109 char *wbptr; /* where next char goes within workbuf */
2110 int wblen = 0; /* workbuf len */
2111 int buflen; /* amount of memory allocated to workbuf */
2113 if ( workbuf != NULL ) { /* user supplied buffer? */
2114 buflen = -1; /* assume buffer passed in is big enough */
2115 wbptr = workbuf; /* start filling here */
2118 buflen = 0; /* No data is available yet */
2120 while (poslt(top, bottom)) {
2122 unsigned long *ldata = lineptr(top.y);
2128 if (!(ldata[cols] & ATTR_WRAPPED)) {
2129 while ((ldata[nlpos.x-1] & CHAR_MASK) == 0x20 && poslt(top, nlpos))
2131 if (poslt(nlpos, bottom))
2134 while (poslt(top, bottom) && poslt(top, nlpos)) {
2135 int ch = (ldata[top.x] & CHAR_MASK);
2136 int set = (ldata[top.x] & CSET_MASK);
2138 /* VT Specials -> ISO8859-1 for Cut&Paste */
2139 static const unsigned char poorman2[] =
2140 "* # HTFFCRLF\xB0 \xB1 NLVT+ + + + + - - - - - + + + + | <=>=PI!=\xA3 \xB7 ";
2142 if (set && !cfg.rawcnp) {
2143 if (set == ATTR_LINEDRW && ch >= 0x60 && ch < 0x7F) {
2145 if ((x = poorman2[2*(ch-0x60)+1]) == ' ')
2147 ch = (x<<8) + poorman2[2*(ch-0x60)];
2152 if (cfg.rawcnp || !!(ch&0xE0)) {
2153 if ( wblen == buflen )
2155 workbuf = srealloc(workbuf, buflen += 100);
2156 wbptr = workbuf + wblen;
2159 *wbptr++ = (unsigned char) ch;
2167 for (i=0; i<sizeof(sel_nl); i++)
2169 if ( wblen == buflen )
2171 workbuf = srealloc(workbuf, buflen += 100);
2172 wbptr = workbuf + wblen;
2175 *wbptr++ = sel_nl[i];
2181 write_clip (workbuf, wblen, FALSE); /* transfer to clipboard */
2182 if ( buflen > 0 ) /* indicates we allocated this buffer */
2186 void term_copyall (void) {
2188 top.y = -count234(scrollback);
2190 clipme(top, curs, NULL /* dynamic allocation */);
2194 * Spread the selection outwards according to the selection mode.
2196 static pos sel_spread_half (pos p, int dir) {
2197 unsigned long *ldata;
2200 ldata = lineptr(p.y);
2205 * In this mode, every character is a separate unit, except
2206 * for runs of spaces at the end of a non-wrapping line.
2208 if (!(ldata[cols] & ATTR_WRAPPED)) {
2209 unsigned long *q = ldata+cols;
2210 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
2212 if (q == ldata+cols)
2215 p.x = (dir == -1 ? q-ldata : cols - 1);
2220 * In this mode, the units are maximal runs of characters
2221 * whose `wordness' has the same value.
2223 wvalue = wordness[ldata[p.x] & CHAR_MASK];
2225 while (p.x < cols && wordness[ldata[p.x+1] & CHAR_MASK] == wvalue)
2228 while (p.x > 0 && wordness[ldata[p.x-1] & CHAR_MASK] == wvalue)
2234 * In this mode, every line is a unit.
2236 p.x = (dir == -1 ? 0 : cols - 1);
2242 static void sel_spread (void) {
2243 selstart = sel_spread_half (selstart, -1);
2245 selend = sel_spread_half (selend, +1);
2249 void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) {
2251 unsigned long *ldata;
2254 if (y>=rows) y = rows-1;
2262 if (x>=cols) x = cols-1;
2264 selpoint.y = y + disptop;
2266 ldata = lineptr(selpoint.y);
2267 if ((ldata[cols]&LATTR_MODE) != LATTR_NORM)
2270 if (b == MB_SELECT && a == MA_CLICK) {
2272 selstate = ABOUT_TO;
2273 selanchor = selpoint;
2275 } else if (b == MB_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
2277 selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
2278 selstate = DRAGGING;
2279 selstart = selanchor = selpoint;
2283 } else if ((b == MB_SELECT && a == MA_DRAG) ||
2284 (b == MB_EXTEND && a != MA_RELEASE)) {
2285 if (selstate == ABOUT_TO && poseq(selanchor, selpoint))
2287 if (b == MB_EXTEND && a != MA_DRAG && selstate == SELECTED) {
2288 if (posdiff(selpoint,selstart) < posdiff(selend,selstart)/2) {
2292 selanchor = selstart;
2294 selstate = DRAGGING;
2296 if (selstate != ABOUT_TO && selstate != DRAGGING)
2297 selanchor = selpoint;
2298 selstate = DRAGGING;
2299 if (poslt(selpoint, selanchor)) {
2300 selstart = selpoint;
2304 selstart = selanchor;
2309 } else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) {
2310 if (selstate == DRAGGING) {
2312 * We've completed a selection. We now transfer the
2313 * data to the clipboard.
2315 clipme(selstart, selend, selspace);
2316 selstate = SELECTED;
2318 selstate = NO_SELECTION;
2319 } else if (b == MB_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) {
2323 get_clip((void **) &data, &len);
2327 if (paste_buffer) sfree(paste_buffer);
2328 paste_pos = paste_hold = paste_len = 0;
2329 paste_buffer = smalloc(len);
2332 while (p < data+len) {
2333 while (p < data+len &&
2334 !(p <= data+len-sizeof(sel_nl) &&
2335 !memcmp(p, sel_nl, sizeof(sel_nl))))
2343 c=xlat_kbd2tty(q[i]);
2344 paste_buffer[paste_len++] = c;
2348 if (p <= data+len-sizeof(sel_nl) &&
2349 !memcmp(p, sel_nl, sizeof(sel_nl))) {
2350 paste_buffer[paste_len++] = '\r';
2351 p += sizeof(sel_nl);
2356 /* Assume a small paste will be OK in one go. */
2357 if (paste_len<256) {
2358 ldisc_send (paste_buffer, paste_len);
2359 if (paste_buffer) sfree(paste_buffer);
2361 paste_pos = paste_hold = paste_len = 0;
2364 get_clip(NULL, NULL);
2370 void term_nopaste() {
2371 if(paste_len == 0) return;
2372 sfree(paste_buffer);
2378 static long last_paste = 0;
2379 long now, paste_diff;
2381 if(paste_len == 0) return;
2383 /* Don't wait forever to paste */
2385 now = GetTickCount();
2386 paste_diff = now-last_paste;
2387 if (paste_diff>=0 && paste_diff<450)
2392 while(paste_pos<paste_len)
2395 while (n + paste_pos < paste_len) {
2396 if (paste_buffer[paste_pos + n++] == '\r')
2399 ldisc_send (paste_buffer+paste_pos, n);
2402 if (paste_pos < paste_len) {
2407 sfree(paste_buffer);
2412 static void deselect (void) {
2413 selstate = NO_SELECTION;
2414 selstart.x = selstart.y = selend.x = selend.y = 0;
2417 void term_deselect (void) {
2422 int term_ldisc(int option) {
2423 if (option == LD_ECHO) return term_echoing;
2424 if (option == LD_EDIT) return term_editing;
2429 * from_backend(), to get data from the backend for the terminal.
2431 void from_backend(int is_stderr, char *data, int len) {
2433 if (inbuf_head >= INBUF_SIZE)
2435 inbuf[inbuf_head++] = *data++;
2440 * Log session traffic.
2442 void logtraffic(unsigned char c, int logmode) {
2443 if (cfg.logtype > 0) {
2444 if (cfg.logtype == logmode) {
2445 /* deferred open file from pgm start? */
2446 if (!lgfp) logfopen();
2447 if (lgfp) fputc (c, lgfp);
2452 /* open log file append/overwrite mode */
2453 void logfopen(void) {
2461 sprintf (writemod, "wb"); /* default to rewrite */
2462 lgfp = fopen(cfg.logfilename, "r"); /* file already present? */
2466 i = askappend(cfg.logfilename);
2468 writemod[0] = 'a'; /* set append mode */
2469 else if (i == 0) { /* cancelled */
2471 cfg.logtype = 0; /* disable logging */
2476 lgfp = fopen(cfg.logfilename, writemod);
2477 if (lgfp) { /* enter into event log */
2478 sprintf(buf, "%s session log (%s mode) to file : ",
2479 (writemod[0] == 'a') ? "Appending" : "Writing new",
2480 (cfg.logtype == LGTYP_ASCII ? "ASCII" :
2481 cfg.logtype == LGTYP_DEBUG ? "raw" : "<ukwn>") );
2482 /* Make sure we do not exceed the output buffer size */
2483 strncat (buf, cfg.logfilename, 128);
2484 buf[strlen(buf)] = '\0';
2487 /* --- write header line iinto log file */
2488 fputs ("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp);
2491 strftime(buf, 24, "%Y.%m.%d %H:%M:%S", tm);
2493 fputs (" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp);
2497 void logfclose (void) {
2498 if (lgfp) { fclose(lgfp); lgfp = NULL; }