15 #define MODE_CURSOR 0x01
16 #define MODE_WRAP 0x02
17 #define MODE_ORIGIN 0x04
18 #define MODE_AUTOCR 0x08
19 #define MODE_DEFAULT (MODE_CURSOR | MODE_WRAP)
20 #define ATTR_BOLD 0x10
21 #define ATTR_ITALIC 0x20
23 #define ATTR_ALL (ATTR_BOLD | ATTR_ITALIC | ATTR_REV)
24 #define MODE_INSERT 0x100
25 #define MODE_WRAPREADY 0x200
27 #define LIMIT(n, a, b) ((n) < (a) ? (a) : ((n) > (b) ? (b) : (n)))
28 #define BIT_SET(i, b, val) ((val) ? ((i) | (b)) : ((i) & ~(b)))
29 #define OFFSET(r, c) ((r) * pad_cols() + (c))
31 static struct term
*term
;
33 static short *fgs
, *bgs
;
42 /* low level drawing and lazy updating */
44 static int fgcolor(void)
46 int c
= mode
& ATTR_REV
? bg
: fg
;
49 if (mode
& ATTR_ITALIC
)
54 static int bgcolor(void)
56 return mode
& ATTR_REV
? fg
: bg
;
59 /* assumes visible && !lazy */
60 static void _draw_pos(int r
, int c
, int cursor
)
62 int rev
= cursor
&& mode
& MODE_CURSOR
;
64 int fg
= rev
? bgs
[i
] : fgs
[i
];
65 int bg
= rev
? fgs
[i
] : bgs
[i
];
66 pad_put(screen
[i
], r
, c
, fg
, bg
);
69 /* assumes visible && !lazy */
70 static void _draw_row(int r
)
73 pad_blankrow(r
, bgcolor());
74 for (i
= 0; i
< pad_cols(); i
++) {
75 int c
= screen
[OFFSET(r
, i
)];
76 if ((c
&& c
!= ' ') || bgs
[OFFSET(r
, i
)] != bgcolor())
81 static int candraw(int sr
, int er
)
85 for (i
= sr
; i
< er
; i
++)
87 return visible
&& !lazy
;
90 static void draw_rows(int sr
, int er
)
94 for (i
= sr
; i
< er
; i
++)
98 static void draw_cols(int r
, int sc
, int ec
)
101 if (candraw(r
, r
+ 1))
102 for (i
= sc
; i
< ec
; i
++)
106 static void draw_char(int ch
, int r
, int c
)
108 int i
= OFFSET(r
, c
);
112 if (candraw(r
, r
+ 1))
116 static void draw_cursor(int put
)
118 if (candraw(row
, row
+ 1))
119 _draw_pos(row
, col
, put
);
122 static void lazy_start(void)
124 memset(dirty
, 0, pad_rows() * sizeof(*dirty
));
128 static void lazy_flush(void)
131 if (!visible
|| !lazy
)
133 for (i
= 0; i
< pad_rows(); i
++)
137 _draw_pos(row
, col
, 1);
142 static void screen_reset(int i
, int n
)
145 candraw(i
/ pad_cols(), (i
+ n
) / pad_cols() + 1);
146 memset(screen
+ i
, 0, n
* sizeof(*screen
));
147 for (c
= 0; c
< n
; c
++)
149 for (c
= 0; c
< n
; c
++)
153 static void screen_move(int dst
, int src
, int n
)
156 candraw(MIN(src
, dst
) / pad_cols(), (MAX(src
, dst
) + n
) / pad_cols() + 1);
158 candraw((MIN(src
, dst
) + n
) / pad_cols(), MAX(src
, dst
) / pad_cols() + 1);
159 memmove(screen
+ dst
, screen
+ src
, n
* sizeof(*screen
));
160 memmove(fgs
+ dst
, fgs
+ src
, n
* sizeof(*fgs
));
161 memmove(bgs
+ dst
, bgs
+ src
, n
* sizeof(*bgs
));
164 /* terminal input buffering */
166 #define PTYLEN (1 << 16)
168 static char ptybuf
[PTYLEN
]; /* always emptied in term_read() */
169 static int ptylen
; /* buffer length */
170 static int ptycur
; /* current offset */
172 static int waitpty(int us
)
174 struct pollfd ufds
[1];
175 ufds
[0].fd
= term
->fd
;
176 ufds
[0].events
= POLLIN
;
177 return poll(ufds
, 1, us
) <= 0;
180 static int readpty(void)
184 return (unsigned char) ptybuf
[ptycur
++];
188 while ((nr
= read(term
->fd
, ptybuf
+ ptylen
, PTYLEN
- ptylen
)) > 0)
190 if (!ptylen
&& errno
== EAGAIN
&& !waitpty(100))
191 ptylen
= read(term
->fd
, ptybuf
, PTYLEN
);
193 return ptylen
> 0 ? (unsigned char) ptybuf
[0] : -1;
196 /* term interface functions */
198 void term_send(int c
)
202 write(term
->fd
, &b
, 1);
205 static void term_sendstr(char *s
)
208 write(term
->fd
, s
, strlen(s
));
211 static void term_blank(void)
213 screen_reset(0, pad_rows() * pad_cols());
215 pad_blank(bgcolor());
218 static void ctlseq(void);
222 while (ptycur
< ptylen
) {
223 if (visible
&& !lazy
&& ptylen
- ptycur
> 15)
230 static void term_reset(void)
241 static int _openpty(int *master
, int *slave
)
246 if ((*master
= open("/dev/ptmx", O_RDWR
)) == -1)
248 if (ioctl(*master
, TIOCSPTLCK
, &unlock
) == -1)
250 if (ioctl(*master
, TIOCGPTN
, &ptyno
) == -1)
252 sprintf(name
, "/dev/pts/%d", ptyno
);
253 *slave
= open(name
, O_RDWR
| O_NOCTTY
);
257 static void _login(int fd
)
260 winp
.ws_col
= pad_cols();
261 winp
.ws_row
= pad_rows();
265 ioctl(fd
, TIOCSCTTY
, NULL
);
266 ioctl(fd
, TIOCSWINSZ
, &winp
);
274 #define MAXENV (1 << 8)
276 static void envcpy(char **d
, char **s
)
283 static void execvep(char *cmd
, char **argv
, char **envp
)
286 char *p
= getenv("PATH");
287 execve(cmd
, argv
, envp
);
290 while (*p
&& *p
!= ':')
294 execve(path
, argv
, envp
);
300 extern char **environ
;
301 void term_exec(char **args
)
304 memset(term
, 0, sizeof(*term
));
305 if (_openpty(&master
, &slave
) == -1)
307 if ((term
->pid
= fork()) == -1)
310 char *envp
[MAXENV
] = {"TERM=linux"};
311 envcpy(envp
+ 1, environ
);
314 execvep(args
[0], args
, envp
);
319 fcntl(term
->fd
, F_SETFD
, fcntl(term
->fd
, F_GETFD
) | FD_CLOEXEC
);
320 fcntl(term
->fd
, F_SETFL
, fcntl(term
->fd
, F_GETFL
) | O_NONBLOCK
);
322 memset(term
->hist
, 0, sizeof(term
->hist
));
325 static void misc_save(struct term_state
*state
)
334 static void misc_load(struct term_state
*state
)
343 void term_save(struct term
*term
)
348 misc_save(&term
->cur
);
354 /* redraw the screen; if all is zero, update changed lines only */
355 void term_redraw(int all
)
360 memset(dirty
, 1, pad_rows() * sizeof(*dirty
));
362 if (all
|| !term
->hpos
)
370 void term_load(struct term
*t
, int flags
)
373 misc_load(&term
->cur
);
374 screen
= term
->screen
;
388 memset(term
, 0, sizeof(*term
));
389 term_load(term
, visible
);
394 static int writeutf8(char *dst
, int c
)
399 *d
++ = 0xf0 | (c
>> 18);
401 } else if (c
> 0x7ff) {
402 *d
++ = 0xe0 | (c
>> 12);
404 } else if (c
> 0x7f) {
405 *d
++ = 0xc0 | (c
>> 6);
408 *d
++ = c
> 0 ? c
: ' ';
412 *d
++ = 0x80 | ((c
>> (l
* 6)) & 0x3f);
416 void term_screenshot(void)
419 int fd
= open(SCRSHOT
, O_CREAT
| O_TRUNC
| O_WRONLY
, 0600);
421 for (i
= 0; i
< pad_rows(); i
++) {
423 for (j
= 0; j
< pad_cols(); j
++)
424 if (~screen
[OFFSET(i
, j
)] & DWCHAR
)
425 s
+= writeutf8(s
, screen
[OFFSET(i
, j
)]);
427 write(fd
, buf
, s
- buf
);
432 /* high-level drawing functions */
434 static void empty_rows(int sr
, int er
)
436 screen_reset(OFFSET(sr
, 0), (er
- sr
) * pad_cols());
439 static void blank_rows(int sr
, int er
)
446 #define HISTROW(pos) (term->hist + ((term->hrow + NHIST - (pos)) % NHIST) * pad_cols())
448 static void scrl_rows(int nr
)
451 for (i
= 0; i
< nr
; i
++) {
452 memcpy(HISTROW(0), screen
+ i
* pad_cols(),
453 pad_cols() * sizeof(screen
[0]));
454 term
->hrow
= (term
->hrow
+ 1) % NHIST
;
458 void term_scrl(int scrl
)
461 int hpos
= LIMIT(term
->hpos
+ scrl
, 0, NHIST
);
468 memset(dirty
, 1, pad_rows() * sizeof(*dirty
));
469 for (i
= 0; i
< pad_rows(); i
++) {
470 int off
= (i
- hpos
) * pad_cols();
471 int *_scr
= i
< hpos
? HISTROW(hpos
- i
) : term
->screen
+ off
;
472 short *_fgs
= i
< hpos
? NULL
: term
->fgs
+ off
;
473 short *_bgs
= i
< hpos
? NULL
: term
->bgs
+ off
;
474 for (j
= 0; j
< pad_cols(); j
++)
475 pad_put(_scr
[j
], i
, j
, _fgs
? _fgs
[j
] : BGCOLOR
,
476 _bgs
? _bgs
[j
] : FGCOLOR
);
480 static void scroll_screen(int sr
, int nr
, int n
)
485 screen_move(OFFSET(sr
+ n
, 0), OFFSET(sr
, 0), nr
* pad_cols());
487 empty_rows(sr
, sr
+ n
);
489 empty_rows(sr
+ nr
+ n
, sr
+ nr
);
490 draw_rows(MIN(sr
, sr
+ n
), MAX(sr
+ nr
, sr
+ nr
+ n
));
494 static void insert_lines(int n
)
496 int sr
= MAX(top
, row
);
497 int nr
= bot
- row
- n
;
499 scroll_screen(sr
, nr
, n
);
502 static void delete_lines(int n
)
504 int r
= MAX(top
, row
);
506 int nr
= bot
- r
- n
;
508 scroll_screen(sr
, nr
, -n
);
511 static int origin(void)
513 return mode
& MODE_ORIGIN
;
516 static void move_cursor(int r
, int c
)
520 t
= origin() ? top
: 0;
521 b
= origin() ? bot
: pad_rows();
522 row
= LIMIT(r
, t
, b
- 1);
523 col
= LIMIT(c
, 0, pad_cols() - 1);
525 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 0);
528 static void set_region(int t
, int b
)
530 top
= LIMIT(t
- 1, 0, pad_rows() - 1);
531 bot
= LIMIT(b
? b
: pad_rows(), top
+ 1, pad_rows());
536 static void setattr(int m
)
557 mode
&= ~ATTR_ITALIC
;
564 fg
= m
> 37 ? FGCOLOR
: m
- 30;
566 bg
= m
> 47 ? BGCOLOR
: m
- 40;
574 static void kill_chars(int sc
, int ec
)
577 for (i
= sc
; i
< ec
; i
++)
578 draw_char(0, row
, i
);
582 static void move_chars(int sc
, int nc
, int n
)
585 screen_move(OFFSET(row
, sc
+ n
), OFFSET(row
, sc
), nc
);
587 screen_reset(OFFSET(row
, sc
), n
);
589 screen_reset(OFFSET(row
, pad_cols() + n
), -n
);
590 draw_cols(row
, MIN(sc
, sc
+ n
), pad_cols());
594 static void delete_chars(int n
)
597 int nc
= pad_cols() - sc
;
598 move_chars(sc
, nc
, -n
);
601 static void insert_chars(int n
)
603 int nc
= pad_cols() - col
- n
;
604 move_chars(col
, nc
, n
);
607 static void advance(int dr
, int dc
, int scrl
)
611 if (dr
&& r
>= bot
&& scrl
) {
613 int nr
= (bot
- top
) + n
;
614 scroll_screen(top
+ -n
, nr
, n
);
616 if (dr
&& r
< top
&& scrl
) {
618 int nr
= (bot
- top
) - n
;
619 scroll_screen(top
, nr
, n
);
621 r
= dr
? LIMIT(r
, top
, bot
- 1) : r
;
622 c
= LIMIT(c
, 0, pad_cols() - 1);
626 static void insertchar(int c
)
628 if (mode
& MODE_WRAPREADY
)
630 if (mode
& MODE_INSERT
)
632 draw_char(c
, row
, col
);
633 if (col
== pad_cols() - 1)
634 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 1);
640 /* partial vt102 implementation */
642 static void escseq(void);
643 static void escseq_cs(void);
644 static void escseq_g0(void);
645 static void escseq_g1(void);
646 static void escseq_g2(void);
647 static void escseq_g3(void);
648 static void csiseq(void);
649 static void csiseq_da(int c
);
650 static void csiseq_dsr(int c
);
651 static void modeseq(int c
, int set
);
653 /* comments taken from: http://www.ivarch.com/programs/termvt102.shtml */
655 static int readutf8(int c
)
661 while (l
< 6 && c
& (0x40 >> l
))
663 result
= (0x3f >> l
) & c
;
665 result
= (result
<< 6) | (readpty() & 0x3f);
669 #define unknown(ctl, c)
671 /* control sequences */
672 static void ctlseq(void)
676 case 0x09: /* HT horizontal tab to next tab stop */
677 advance(0, 8 - col
% 8, 0);
679 case 0x0a: /* LF line feed */
680 case 0x0b: /* VT line feed */
681 case 0x0c: /* FF line feed */
682 advance(1, (mode
& MODE_AUTOCR
) ? -col
: 0, 1);
684 case 0x08: /* BS backspace one column */
687 case 0x1b: /* ESC start escape sequence */
690 case 0x0d: /* CR carriage return */
693 case 0x00: /* NUL ignored */
694 case 0x07: /* BEL beep */
695 case 0x7f: /* DEL ignored */
697 case 0x05: /* ENQ trigger answerback message */
698 case 0x0e: /* SO activate G1 character set & newline */
699 case 0x0f: /* SI activate G0 character set */
700 case 0x11: /* XON resume transmission */
701 case 0x13: /* XOFF stop transmission, ignore characters */
702 case 0x18: /* CAN interrupt escape sequence */
703 case 0x1a: /* SUB interrupt escape sequence */
704 case 0x9b: /* CSI equivalent to ESC [ */
705 unknown("ctlseq", c
);
709 if (isdw(c
) && col
+ 1 == pad_cols() && ~mode
& MODE_WRAPREADY
)
714 insertchar(c
| DWCHAR
);
719 #define ESCM(c) (((c) & 0xf0) == 0x20)
720 #define ESCF(c) ((c) > 0x30 && (c) < 0x7f)
722 /* escape sequences */
723 static void escseq(void)
729 case '[': /* CSI control sequence introducer */
732 case '%': /* CS... escseq_cs table */
735 case '(': /* G0... escseq_g0 table */
738 case ')': /* G1... escseq_g1 table */
741 case '*': /* G2... escseq_g2 table */
744 case '+': /* G3... escseq_g3 table */
747 case '7': /* DECSC save state (position, charset, attributes) */
748 misc_save(&term
->sav
);
750 case '8': /* DECRC restore most recently saved state */
751 misc_load(&term
->sav
);
753 case 'M': /* RI reverse line feed */
756 case 'D': /* IND line feed */
759 case 'E': /* NEL newline */
762 case 'c': /* RIS reset */
765 case 'H': /* HTS set tab stop at current column */
766 case 'Z': /* DECID DEC private ID; return ESC [ ? 6 c (VT102) */
767 case '#': /* DECALN ("#8") DEC alignment test - fill screen with E's */
768 case '>': /* DECPNM set numeric keypad mode */
769 case '=': /* DECPAM set application keypad mode */
770 case 'N': /* SS2 select G2 charset for next char only */
771 case 'O': /* SS3 select G3 charset for next char only */
772 case 'P': /* DCS device control string (ended by ST) */
773 case 'X': /* SOS start of string */
774 case '^': /* PM privacy message (ended by ST) */
775 case '_': /* APC application program command (ended by ST) */
776 case '\\': /* ST string terminator */
777 case 'n': /* LS2 invoke G2 charset */
778 case 'o': /* LS3 invoke G3 charset */
779 case '|': /* LS3R invoke G3 charset as GR */
780 case '}': /* LS2R invoke G2 charset as GR */
781 case '~': /* LS1R invoke G1 charset as GR */
782 case ']': /* OSC operating system command */
783 case 'g': /* BEL alternate BEL */
785 unknown("escseq", c
);
790 static void escseq_cs(void)
794 case '@': /* CSDFL select default charset (ISO646/8859-1) */
795 case 'G': /* CSUTF8 select UTF-8 */
796 case '8': /* CSUTF8 select UTF-8 (obsolete) */
798 unknown("escseq_cs", c
);
803 static void escseq_g0(void)
807 case '8': /* G0DFL G0 charset = default mapping (ISO8859-1) */
808 case '0': /* G0GFX G0 charset = VT100 graphics mapping */
809 case 'U': /* G0ROM G0 charset = null mapping (straight to ROM) */
810 case 'K': /* G0USR G0 charset = user defined mapping */
811 case 'B': /* G0TXT G0 charset = ASCII mapping */
813 unknown("escseq_g0", c
);
818 static void escseq_g1(void)
822 case '8': /* G1DFL G1 charset = default mapping (ISO8859-1) */
823 case '0': /* G1GFX G1 charset = VT100 graphics mapping */
824 case 'U': /* G1ROM G1 charset = null mapping (straight to ROM) */
825 case 'K': /* G1USR G1 charset = user defined mapping */
826 case 'B': /* G1TXT G1 charset = ASCII mapping */
828 unknown("escseq_g1", c
);
833 static void escseq_g2(void)
837 case '8': /* G2DFL G2 charset = default mapping (ISO8859-1) */
838 case '0': /* G2GFX G2 charset = VT100 graphics mapping */
839 case 'U': /* G2ROM G2 charset = null mapping (straight to ROM) */
840 case 'K': /* G2USR G2 charset = user defined mapping */
842 unknown("escseq_g2", c
);
847 static void escseq_g3(void)
851 case '8': /* G3DFL G3 charset = default mapping (ISO8859-1) */
852 case '0': /* G3GFX G3 charset = VT100 graphics mapping */
853 case 'U': /* G3ROM G3 charset = null mapping (straight to ROM) */
854 case 'K': /* G3USR G3 charset = user defined mapping */
856 unknown("escseq_g3", c
);
861 static int absrow(int r
)
863 return origin() ? top
+ r
: r
;
866 #define CSIP(c) (((c) & 0xf0) == 0x30)
867 #define CSII(c) (((c) & 0xf0) == 0x20)
868 #define CSIF(c) ((c) >= 0x40 && (c) < 0x80)
870 #define MAXCSIARGS 32
871 /* ECMA-48 CSI sequences */
872 static void csiseq(void)
874 int args
[MAXCSIARGS
] = {0};
880 if (strchr("<=>?", c
)) {
887 arg
= arg
* 10 + (c
- '0');
898 case 'H': /* CUP move cursor to row, column */
899 case 'f': /* HVP move cursor to row, column */
900 move_cursor(absrow(MAX(0, args
[0] - 1)), MAX(0, args
[1] - 1));
902 case 'J': /* ED erase display */
905 kill_chars(col
, pad_cols());
906 blank_rows(row
+ 1, pad_rows());
909 kill_chars(0, col
+ 1);
910 blank_rows(0, row
- 1);
917 case 'A': /* CUU move cursor up */
918 advance(-MAX(1, args
[0]), 0, 0);
920 case 'e': /* VPR move cursor down */
921 case 'B': /* CUD move cursor down */
922 advance(MAX(1, args
[0]), 0, 0);
924 case 'a': /* HPR move cursor right */
925 case 'C': /* CUF move cursor right */
926 advance(0, MAX(1, args
[0]), 0);
928 case 'D': /* CUB move cursor left */
929 advance(0, -MAX(1, args
[0]), 0);
931 case 'K': /* EL erase line */
934 kill_chars(col
, pad_cols());
937 kill_chars(0, col
+ 1);
940 kill_chars(0, pad_cols());
944 case 'L': /* IL insert blank lines */
945 if (row
>= top
&& row
< bot
)
946 insert_lines(MAX(1, args
[0]));
948 case 'M': /* DL delete lines */
949 if (row
>= top
&& row
< bot
)
950 delete_lines(MAX(1, args
[0]));
952 case 'd': /* VPA move to row (current column) */
953 move_cursor(absrow(MAX(1, args
[0]) - 1), col
);
955 case 'm': /* SGR set graphic rendition */
958 for (i
= 0; i
< n
; i
++) {
972 case 'r': /* DECSTBM set scrolling region to (top, bottom) rows */
973 set_region(args
[0], args
[1]);
975 case 'c': /* DA return ESC [ ? 6 c (VT102) */
976 csiseq_da(priv
== '?' ? args
[0] | 0x80 : args
[0]);
978 case 'h': /* SM set mode */
979 for (i
= 0; i
< n
; i
++)
980 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 1);
982 case 'l': /* RM reset mode */
983 for (i
= 0; i
< n
; i
++)
984 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 0);
986 case 'P': /* DCH delete characters on current line */
987 delete_chars(LIMIT(args
[0], 1, pad_cols() - col
));
989 case '@': /* ICH insert blank characters */
990 insert_chars(LIMIT(args
[0], 1, pad_cols() - col
));
992 case 'n': /* DSR device status report */
995 case 'G': /* CHA move cursor to column in current row */
996 advance(0, MAX(0, args
[0] - 1) - col
, 0);
998 case 'X': /* ECH erase characters on current line */
999 kill_chars(col
, MIN(col
+ MAX(1, args
[0]), pad_cols()));
1001 case '[': /* IGN ignored control sequence */
1002 case 'E': /* CNL move cursor down and to column 1 */
1003 case 'F': /* CPL move cursor up and to column 1 */
1004 case 'g': /* TBC clear tab stop (CSI 3 g = clear all stops) */
1005 case 'q': /* DECLL set keyboard LEDs */
1006 case 's': /* CUPSV save cursor position */
1007 case 'u': /* CUPRS restore cursor position */
1008 case '`': /* HPA move cursor to column in current row */
1010 unknown("csiseq", c
);
1015 static void csiseq_da(int c
)
1019 term_sendstr("\x1b[?6c");
1022 /* we don't care much about cursor shape */
1023 /* printf("csiseq_da <0x%x>\n", c); */
1028 static void csiseq_dsr(int c
)
1030 char status
[1 << 5];
1033 term_sendstr("\x1b[0n");
1036 sprintf(status
, "\x1b[%d;%dR",
1037 (origin() ? row
- top
: row
) + 1, col
+ 1);
1038 term_sendstr(status
);
1041 unknown("csiseq_dsr", c
);
1046 /* ANSI/DEC specified modes for SM/RM ANSI Specified Modes */
1047 static void modeseq(int c
, int set
)
1050 case 0x87: /* DECAWM Auto Wrap */
1051 mode
= BIT_SET(mode
, MODE_WRAP
, set
);
1053 case 0x99: /* DECTCEM Cursor on (set); Cursor off (reset) */
1054 mode
= BIT_SET(mode
, MODE_CURSOR
, set
);
1056 case 0x86: /* DECOM Sets relative coordinates (set); Sets absolute coordinates (reset) */
1057 mode
= BIT_SET(mode
, MODE_ORIGIN
, set
);
1059 case 0x14: /* LNM Line Feed / New Line Mode */
1060 mode
= BIT_SET(mode
, MODE_AUTOCR
, set
);
1062 case 0x04: /* IRM insertion/replacement mode (always reset) */
1063 mode
= BIT_SET(mode
, MODE_INSERT
, set
);
1065 case 0x00: /* IGN Error (Ignored) */
1066 case 0x01: /* GATM guarded-area transfer mode (ignored) */
1067 case 0x02: /* KAM keyboard action mode (always reset) */
1068 case 0x03: /* CRM control representation mode (always reset) */
1069 case 0x05: /* SRTM status-reporting transfer mode */
1070 case 0x06: /* ERM erasure mode (always set) */
1071 case 0x07: /* VEM vertical editing mode (ignored) */
1072 case 0x0a: /* HEM horizontal editing mode */
1073 case 0x0b: /* PUM positioning unit mode */
1074 case 0x0c: /* SRM send/receive mode (echo on/off) */
1075 case 0x0d: /* FEAM format effector action mode */
1076 case 0x0e: /* FETM format effector transfer mode */
1077 case 0x0f: /* MATM multiple area transfer mode */
1078 case 0x10: /* TTM transfer termination mode */
1079 case 0x11: /* SATM selected area transfer mode */
1080 case 0x12: /* TSM tabulation stop mode */
1081 case 0x13: /* EBM editing boundary mode */
1082 /* DEC Private Modes: "?NUM" -> (NUM | 0x80) */
1083 case 0x80: /* IGN Error (Ignored) */
1084 case 0x81: /* DECCKM Cursorkeys application (set); Cursorkeys normal (reset) */
1085 case 0x82: /* DECANM ANSI (set); VT52 (reset) */
1086 case 0x83: /* DECCOLM 132 columns (set); 80 columns (reset) */
1087 case 0x84: /* DECSCLM Jump scroll (set); Smooth scroll (reset) */
1088 case 0x85: /* DECSCNM Reverse screen (set); Normal screen (reset) */
1089 case 0x88: /* DECARM Auto Repeat */
1090 case 0x89: /* DECINLM Interlace */
1091 case 0x92: /* DECPFF Send FF to printer after print screen (set); No char after PS (reset) */
1092 case 0x93: /* DECPEX Print screen: prints full screen (set); prints scroll region (reset) */
1094 unknown("modeseq", c
);