15 #define MODE_CURSOR 0x01
16 #define MODE_WRAP 0x02
17 #define MODE_ORIGIN 0x04
18 #define MODE_AUTOCR 0x08
19 #define ATTR_BOLD 0x10
20 #define ATTR_ITALIC 0x20
22 #define ATTR_ALL (ATTR_BOLD | ATTR_ITALIC | ATTR_REV)
23 #define MODE_INSERT 0x100
24 #define MODE_WRAPREADY 0x200
26 #define LIMIT(n, a, b) ((n) < (a) ? (a) : ((n) > (b) ? (b) : (n)))
27 #define BIT_SET(i, b, val) ((val) ? ((i) | (b)) : ((i) & ~(b)))
28 #define OFFSET(r, c) ((r) * pad_cols() + (c))
30 static struct term
*term
;
32 static int *fgs
, *bgs
;
41 static unsigned int clr16
[16] = {
42 COLOR0
, COLOR1
, COLOR2
, COLOR3
, COLOR4
, COLOR5
, COLOR6
, COLOR7
,
43 COLOR8
, COLOR9
, COLORA
, COLORB
, COLORC
, COLORD
, COLORE
, COLORF
,
46 static int clrmap(int c
)
48 int g
= (c
- 232) * 10 + 8;
53 int ri
= (c
- 16) / 36 ;
54 int gi
= (c
- 16) % 36 / 6;
55 int bi
= (c
- 16) % 6;
56 int rc
= ri
? (ri
* 40 + 55) : 0;
57 int gc
= gi
? (gi
* 40 + 55) : 0;
58 int bc
= bi
? (bi
* 40 + 55) : 0;
59 return (rc
<< 16) | (gc
<< 8) | bc
;
61 return (g
<< 16) | (g
<< 8) | g
;
64 /* low level drawing and lazy updating */
66 static int fgcolor(void)
68 int c
= mode
& ATTR_REV
? bg
: fg
;
71 if (mode
& ATTR_ITALIC
)
76 static int bgcolor(void)
78 return mode
& ATTR_REV
? fg
: bg
;
81 /* assumes visible && !lazy */
82 static void _draw_pos(int r
, int c
, int cursor
)
84 int rev
= cursor
&& mode
& MODE_CURSOR
;
86 int fg
= rev
? bgs
[i
] : fgs
[i
];
87 int bg
= rev
? fgs
[i
] : bgs
[i
];
88 pad_put(screen
[i
], r
, c
, fg
, bg
);
91 /* assumes visible && !lazy */
92 static void _draw_row(int r
)
94 int cbg
, cch
; /* current background and character */
95 int fbg
, fsc
= -1; /* filling background and start column */
97 /* call pad_fill() only once for blank columns with identical backgrounds */
98 for (i
= 0; i
< pad_cols(); i
++) {
99 cbg
= bgs
[OFFSET(r
, i
)];
100 cch
= screen
[OFFSET(r
, i
)] ? screen
[OFFSET(r
, i
)] : ' ';
101 if (fsc
>= 0 && (cbg
!= fbg
|| cch
!= ' ')) {
102 pad_fill(r
, r
+ 1, fsc
, i
, fbg
& FN_C
);
107 } else if (fsc
< 0) {
112 pad_fill(r
, r
+ 1, fsc
>= 0 ? fsc
: pad_cols(), -1, cbg
& FN_C
);
115 static int candraw(int sr
, int er
)
119 for (i
= sr
; i
< er
; i
++)
121 return visible
&& !lazy
;
124 static void draw_rows(int sr
, int er
)
128 for (i
= sr
; i
< er
; i
++)
132 static void draw_cols(int r
, int sc
, int ec
)
135 if (candraw(r
, r
+ 1))
136 for (i
= sc
; i
< ec
; i
++)
140 static void draw_char(int ch
, int r
, int c
)
142 int i
= OFFSET(r
, c
);
146 if (candraw(r
, r
+ 1))
150 static void draw_cursor(int put
)
152 if (candraw(row
, row
+ 1))
153 _draw_pos(row
, col
, put
);
156 static void lazy_start(void)
158 memset(dirty
, 0, pad_rows() * sizeof(*dirty
));
162 static void lazy_flush(void)
165 if (!visible
|| !lazy
)
167 for (i
= 0; i
< pad_rows(); i
++)
171 _draw_pos(row
, col
, 1);
176 static void screen_reset(int i
, int n
)
179 candraw(i
/ pad_cols(), (i
+ n
) / pad_cols() + 1);
180 memset(screen
+ i
, 0, n
* sizeof(*screen
));
181 for (c
= 0; c
< n
; c
++)
183 for (c
= 0; c
< n
; c
++)
187 static void screen_move(int dst
, int src
, int n
)
189 int srow
= (MIN(src
, dst
) + (n
> 0 ? 0 : n
)) / pad_cols();
190 int drow
= (MAX(src
, dst
) + (n
> 0 ? n
: 0)) / pad_cols() + 1;
192 memmove(screen
+ dst
, screen
+ src
, n
* sizeof(*screen
));
193 memmove(fgs
+ dst
, fgs
+ src
, n
* sizeof(*fgs
));
194 memmove(bgs
+ dst
, bgs
+ src
, n
* sizeof(*bgs
));
197 /* terminal input buffering */
199 #define PTYLEN (1 << 16)
201 static char ptybuf
[PTYLEN
]; /* always emptied in term_read() */
202 static int ptylen
; /* buffer length */
203 static int ptycur
; /* current offset */
205 static int waitpty(int us
)
207 struct pollfd ufds
[1];
208 ufds
[0].fd
= term
->fd
;
209 ufds
[0].events
= POLLIN
;
210 return poll(ufds
, 1, us
) <= 0;
213 static int readpty(void)
217 return (unsigned char) ptybuf
[ptycur
++];
221 while ((nr
= read(term
->fd
, ptybuf
+ ptylen
, PTYLEN
- ptylen
)) > 0)
223 if (!ptylen
&& errno
== EAGAIN
&& !waitpty(100))
224 ptylen
= read(term
->fd
, ptybuf
, PTYLEN
);
226 return ptylen
> 0 ? (unsigned char) ptybuf
[0] : -1;
229 /* term interface functions */
231 void term_send(int c
)
235 write(term
->fd
, &b
, 1);
238 static void term_sendstr(char *s
)
241 write(term
->fd
, s
, strlen(s
));
244 static void term_blank(void)
246 screen_reset(0, pad_rows() * pad_cols());
248 pad_fill(0, -1, 0, -1, bgcolor() & FN_C
);
251 static void ctlseq(void);
255 while (ptycur
< ptylen
) {
256 if (visible
&& !lazy
&& ptylen
- ptycur
> 15)
263 static void term_reset(void)
268 mode
= MODE_CURSOR
| MODE_WRAP
;
274 static int _openpty(int *master
, int *slave
)
279 if ((*master
= open("/dev/ptmx", O_RDWR
)) == -1)
281 if (ioctl(*master
, TIOCSPTLCK
, &unlock
) == -1)
283 if (ioctl(*master
, TIOCGPTN
, &ptyno
) == -1)
285 sprintf(name
, "/dev/pts/%d", ptyno
);
286 *slave
= open(name
, O_RDWR
| O_NOCTTY
);
290 static void _login(int fd
)
293 winp
.ws_col
= pad_cols();
294 winp
.ws_row
= pad_rows();
298 ioctl(fd
, TIOCSCTTY
, NULL
);
299 ioctl(fd
, TIOCSWINSZ
, &winp
);
307 #define MAXENV (1 << 8)
309 static void envcpy(char **d
, char **s
)
316 static void execvep(char *cmd
, char **argv
, char **envp
)
319 char *p
= getenv("PATH");
320 execve(cmd
, argv
, envp
);
323 while (*p
&& *p
!= ':')
327 execve(path
, argv
, envp
);
333 extern char **environ
;
334 void term_exec(char **args
)
337 memset(term
, 0, sizeof(*term
));
338 if (_openpty(&master
, &slave
) == -1)
340 if ((term
->pid
= fork()) == -1)
343 char *envp
[MAXENV
] = {"TERM=linux"};
344 envcpy(envp
+ 1, environ
);
347 execvep(args
[0], args
, envp
);
352 fcntl(term
->fd
, F_SETFD
, fcntl(term
->fd
, F_GETFD
) | FD_CLOEXEC
);
353 fcntl(term
->fd
, F_SETFL
, fcntl(term
->fd
, F_GETFL
) | O_NONBLOCK
);
355 memset(term
->hist
, 0, sizeof(term
->hist
));
358 static void misc_save(struct term_state
*state
)
367 static void misc_load(struct term_state
*state
)
376 void term_save(struct term
*term
)
381 misc_save(&term
->cur
);
387 /* redraw the screen; if all is zero, update changed lines only */
388 void term_redraw(int all
)
392 pad_fill(pad_rows(), -1, 0, -1, BGCOLOR
);
394 memset(dirty
, 1, pad_rows() * sizeof(*dirty
));
396 if (all
|| !term
->hpos
)
400 pad_fill(0, -1, 0, -1, 0);
404 void term_load(struct term
*t
, int flags
)
407 misc_load(&term
->cur
);
408 screen
= term
->screen
;
422 memset(term
, 0, sizeof(*term
));
423 term_load(term
, visible
);
428 static int writeutf8(char *dst
, int c
)
433 *d
++ = 0xf0 | (c
>> 18);
435 } else if (c
> 0x7ff) {
436 *d
++ = 0xe0 | (c
>> 12);
438 } else if (c
> 0x7f) {
439 *d
++ = 0xc0 | (c
>> 6);
442 *d
++ = c
> 0 ? c
: ' ';
446 *d
++ = 0x80 | ((c
>> (l
* 6)) & 0x3f);
450 void term_screenshot(void)
453 int fd
= open(SCRSHOT
, O_CREAT
| O_TRUNC
| O_WRONLY
, 0600);
455 for (i
= 0; i
< pad_rows(); i
++) {
457 for (j
= 0; j
< pad_cols(); j
++)
458 if (~screen
[OFFSET(i
, j
)] & DWCHAR
)
459 s
+= writeutf8(s
, screen
[OFFSET(i
, j
)]);
461 write(fd
, buf
, s
- buf
);
466 /* high-level drawing functions */
468 static void empty_rows(int sr
, int er
)
470 screen_reset(OFFSET(sr
, 0), (er
- sr
) * pad_cols());
473 static void blank_rows(int sr
, int er
)
480 #define HISTROW(pos) (term->hist + ((term->hrow + NHIST - (pos)) % NHIST) * pad_cols())
482 static void scrl_rows(int nr
)
485 for (i
= 0; i
< nr
; i
++) {
486 memcpy(HISTROW(0), screen
+ i
* pad_cols(),
487 pad_cols() * sizeof(screen
[0]));
488 term
->hrow
= (term
->hrow
+ 1) % NHIST
;
492 void term_scrl(int scrl
)
495 int hpos
= LIMIT(term
->hpos
+ scrl
, 0, NHIST
);
502 memset(dirty
, 1, pad_rows() * sizeof(*dirty
));
503 for (i
= 0; i
< pad_rows(); i
++) {
504 int off
= (i
- hpos
) * pad_cols();
505 int *_scr
= i
< hpos
? HISTROW(hpos
- i
) : term
->screen
+ off
;
506 int *_fgs
= i
< hpos
? NULL
: term
->fgs
+ off
;
507 int *_bgs
= i
< hpos
? NULL
: term
->bgs
+ off
;
508 for (j
= 0; j
< pad_cols(); j
++)
509 pad_put(_scr
[j
], i
, j
, _fgs
? _fgs
[j
] : BGCOLOR
,
510 _bgs
? _bgs
[j
] : FGCOLOR
);
514 static void scroll_screen(int sr
, int nr
, int n
)
519 screen_move(OFFSET(sr
+ n
, 0), OFFSET(sr
, 0), nr
* pad_cols());
521 empty_rows(sr
, sr
+ n
);
523 empty_rows(sr
+ nr
+ n
, sr
+ nr
);
524 draw_rows(MIN(sr
, sr
+ n
), MAX(sr
+ nr
, sr
+ nr
+ n
));
528 static void insert_lines(int n
)
530 int sr
= MAX(top
, row
);
531 int nr
= bot
- row
- n
;
533 scroll_screen(sr
, nr
, n
);
536 static void delete_lines(int n
)
538 int r
= MAX(top
, row
);
540 int nr
= bot
- r
- n
;
542 scroll_screen(sr
, nr
, -n
);
545 static int origin(void)
547 return mode
& MODE_ORIGIN
;
550 static void move_cursor(int r
, int c
)
554 t
= origin() ? top
: 0;
555 b
= origin() ? bot
: pad_rows();
556 row
= LIMIT(r
, t
, b
- 1);
557 col
= LIMIT(c
, 0, pad_cols() - 1);
559 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 0);
562 static void set_region(int t
, int b
)
564 top
= LIMIT(t
- 1, 0, pad_rows() - 1);
565 bot
= LIMIT(b
? b
: pad_rows(), top
+ 1, pad_rows());
570 static void setattr(int m
)
591 mode
&= ~ATTR_ITALIC
;
598 fg
= m
> 37 ? FGCOLOR
: clrmap(m
- 30);
600 bg
= m
> 47 ? BGCOLOR
: clrmap(m
- 40);
602 fg
= clrmap(8 + m
- 90);
604 bg
= clrmap(8 + m
- 100);
608 static void kill_chars(int sc
, int ec
)
611 for (i
= sc
; i
< ec
; i
++)
612 draw_char(0, row
, i
);
616 static void move_chars(int sc
, int nc
, int n
)
619 screen_move(OFFSET(row
, sc
+ n
), OFFSET(row
, sc
), nc
);
621 screen_reset(OFFSET(row
, sc
), n
);
623 screen_reset(OFFSET(row
, pad_cols() + n
), -n
);
624 draw_cols(row
, MIN(sc
, sc
+ n
), pad_cols());
628 static void delete_chars(int n
)
631 int nc
= pad_cols() - sc
;
632 move_chars(sc
, nc
, -n
);
635 static void insert_chars(int n
)
637 int nc
= pad_cols() - col
- n
;
638 move_chars(col
, nc
, n
);
641 static void advance(int dr
, int dc
, int scrl
)
645 if (dr
&& r
>= bot
&& scrl
) {
647 int nr
= (bot
- top
) + n
;
648 scroll_screen(top
+ -n
, nr
, n
);
650 if (dr
&& r
< top
&& scrl
) {
652 int nr
= (bot
- top
) - n
;
653 scroll_screen(top
, nr
, n
);
655 r
= dr
? LIMIT(r
, top
, bot
- 1) : r
;
656 c
= LIMIT(c
, 0, pad_cols() - 1);
660 static void insertchar(int c
)
662 if (mode
& MODE_WRAPREADY
)
664 if (mode
& MODE_INSERT
)
666 draw_char(c
, row
, col
);
667 if (col
== pad_cols() - 1)
668 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 1);
674 /* partial vt102 implementation */
676 static void escseq(void);
677 static void escseq_cs(void);
678 static void escseq_g0(void);
679 static void escseq_g1(void);
680 static void escseq_g2(void);
681 static void escseq_g3(void);
682 static void csiseq(void);
683 static void csiseq_da(int c
);
684 static void csiseq_dsr(int c
);
685 static void modeseq(int c
, int set
);
687 /* comments taken from: http://www.ivarch.com/programs/termvt102.shtml */
689 static int readutf8(int c
)
695 while (l
< 6 && c
& (0x40 >> l
))
697 result
= (0x3f >> l
) & c
;
699 result
= (result
<< 6) | (readpty() & 0x3f);
703 #define unknown(ctl, c)
705 /* control sequences */
706 static void ctlseq(void)
710 case 0x09: /* HT horizontal tab to next tab stop */
711 advance(0, 8 - col
% 8, 0);
713 case 0x0a: /* LF line feed */
714 case 0x0b: /* VT line feed */
715 case 0x0c: /* FF line feed */
716 advance(1, (mode
& MODE_AUTOCR
) ? -col
: 0, 1);
718 case 0x08: /* BS backspace one column */
721 case 0x1b: /* ESC start escape sequence */
724 case 0x0d: /* CR carriage return */
727 case 0x9b: /* CSI equivalent to ESC [ */
730 case 0x00: /* NUL ignored */
731 case 0x07: /* BEL beep */
732 case 0x7f: /* DEL ignored */
734 case 0x05: /* ENQ trigger answerback message */
735 case 0x0e: /* SO activate G1 character set & newline */
736 case 0x0f: /* SI activate G0 character set */
737 case 0x11: /* XON resume transmission */
738 case 0x13: /* XOFF stop transmission, ignore characters */
739 case 0x18: /* CAN interrupt escape sequence */
740 case 0x1a: /* SUB interrupt escape sequence */
741 unknown("ctlseq", c
);
745 if (isdw(c
) && col
+ 1 == pad_cols() && ~mode
& MODE_WRAPREADY
)
750 insertchar(c
| DWCHAR
);
755 #define ESCM(c) (((c) & 0xf0) == 0x20)
756 #define ESCF(c) ((c) > 0x30 && (c) < 0x7f)
758 /* escape sequences */
759 static void escseq(void)
765 case '[': /* CSI control sequence introducer */
768 case '%': /* CS... escseq_cs table */
771 case '(': /* G0... escseq_g0 table */
774 case ')': /* G1... escseq_g1 table */
777 case '*': /* G2... escseq_g2 table */
780 case '+': /* G3... escseq_g3 table */
783 case '7': /* DECSC save state (position, charset, attributes) */
784 misc_save(&term
->sav
);
786 case '8': /* DECRC restore most recently saved state */
787 misc_load(&term
->sav
);
789 case 'M': /* RI reverse line feed */
792 case 'D': /* IND line feed */
795 case 'E': /* NEL newline */
798 case 'c': /* RIS reset */
801 case 'H': /* HTS set tab stop at current column */
802 case 'Z': /* DECID DEC private ID; return ESC [ ? 6 c (VT102) */
803 case '#': /* DECALN ("#8") DEC alignment test - fill screen with E's */
804 case '>': /* DECPNM set numeric keypad mode */
805 case '=': /* DECPAM set application keypad mode */
806 case 'N': /* SS2 select G2 charset for next char only */
807 case 'O': /* SS3 select G3 charset for next char only */
808 case 'P': /* DCS device control string (ended by ST) */
809 case 'X': /* SOS start of string */
810 case '^': /* PM privacy message (ended by ST) */
811 case '_': /* APC application program command (ended by ST) */
812 case '\\': /* ST string terminator */
813 case 'n': /* LS2 invoke G2 charset */
814 case 'o': /* LS3 invoke G3 charset */
815 case '|': /* LS3R invoke G3 charset as GR */
816 case '}': /* LS2R invoke G2 charset as GR */
817 case '~': /* LS1R invoke G1 charset as GR */
818 case ']': /* OSC operating system command */
819 case 'g': /* BEL alternate BEL */
821 unknown("escseq", c
);
826 static void escseq_cs(void)
830 case '@': /* CSDFL select default charset (ISO646/8859-1) */
831 case 'G': /* CSUTF8 select UTF-8 */
832 case '8': /* CSUTF8 select UTF-8 (obsolete) */
834 unknown("escseq_cs", c
);
839 static void escseq_g0(void)
843 case '8': /* G0DFL G0 charset = default mapping (ISO8859-1) */
844 case '0': /* G0GFX G0 charset = VT100 graphics mapping */
845 case 'U': /* G0ROM G0 charset = null mapping (straight to ROM) */
846 case 'K': /* G0USR G0 charset = user defined mapping */
847 case 'B': /* G0TXT G0 charset = ASCII mapping */
849 unknown("escseq_g0", c
);
854 static void escseq_g1(void)
858 case '8': /* G1DFL G1 charset = default mapping (ISO8859-1) */
859 case '0': /* G1GFX G1 charset = VT100 graphics mapping */
860 case 'U': /* G1ROM G1 charset = null mapping (straight to ROM) */
861 case 'K': /* G1USR G1 charset = user defined mapping */
862 case 'B': /* G1TXT G1 charset = ASCII mapping */
864 unknown("escseq_g1", c
);
869 static void escseq_g2(void)
873 case '8': /* G2DFL G2 charset = default mapping (ISO8859-1) */
874 case '0': /* G2GFX G2 charset = VT100 graphics mapping */
875 case 'U': /* G2ROM G2 charset = null mapping (straight to ROM) */
876 case 'K': /* G2USR G2 charset = user defined mapping */
878 unknown("escseq_g2", c
);
883 static void escseq_g3(void)
887 case '8': /* G3DFL G3 charset = default mapping (ISO8859-1) */
888 case '0': /* G3GFX G3 charset = VT100 graphics mapping */
889 case 'U': /* G3ROM G3 charset = null mapping (straight to ROM) */
890 case 'K': /* G3USR G3 charset = user defined mapping */
892 unknown("escseq_g3", c
);
897 static int absrow(int r
)
899 return origin() ? top
+ r
: r
;
902 #define CSIP(c) (((c) & 0xf0) == 0x30)
903 #define CSII(c) (((c) & 0xf0) == 0x20)
904 #define CSIF(c) ((c) >= 0x40 && (c) < 0x80)
906 #define MAXCSIARGS 32
907 /* ECMA-48 CSI sequences */
908 static void csiseq(void)
910 int args
[MAXCSIARGS
+ 8] = {0};
916 if (strchr("<=>?", c
)) {
923 arg
= arg
* 10 + (c
- '0');
934 case 'H': /* CUP move cursor to row, column */
935 case 'f': /* HVP move cursor to row, column */
936 move_cursor(absrow(MAX(0, args
[0] - 1)), MAX(0, args
[1] - 1));
938 case 'J': /* ED erase display */
941 kill_chars(col
, pad_cols());
942 blank_rows(row
+ 1, pad_rows());
945 kill_chars(0, col
+ 1);
946 blank_rows(0, row
- 1);
953 case 'A': /* CUU move cursor up */
954 advance(-MAX(1, args
[0]), 0, 0);
956 case 'e': /* VPR move cursor down */
957 case 'B': /* CUD move cursor down */
958 advance(MAX(1, args
[0]), 0, 0);
960 case 'a': /* HPR move cursor right */
961 case 'C': /* CUF move cursor right */
962 advance(0, MAX(1, args
[0]), 0);
964 case 'D': /* CUB move cursor left */
965 advance(0, -MAX(1, args
[0]), 0);
967 case 'K': /* EL erase line */
970 kill_chars(col
, pad_cols());
973 kill_chars(0, col
+ 1);
976 kill_chars(0, pad_cols());
980 case 'L': /* IL insert blank lines */
981 if (row
>= top
&& row
< bot
)
982 insert_lines(MAX(1, args
[0]));
984 case 'M': /* DL delete lines */
985 if (row
>= top
&& row
< bot
)
986 delete_lines(MAX(1, args
[0]));
988 case 'd': /* VPA move to row (current column) */
989 move_cursor(absrow(MAX(1, args
[0]) - 1), col
);
991 case 'm': /* SGR set graphic rendition */
994 for (i
= 0; i
< n
; i
++) {
995 if (args
[i
] == 38 && args
[i
+ 1] == 2) {
996 fg
= (args
[i
+ 2] << 16) |
997 (args
[i
+ 3] << 8) | args
[i
+ 4];
1001 if (args
[i
] == 38) {
1002 fg
= clrmap(args
[i
+ 2]);
1006 if (args
[i
] == 48 && args
[i
+ 1] == 2) {
1007 bg
= (args
[i
+ 2] << 16) |
1008 (args
[i
+ 3] << 8) | args
[i
+ 4];
1012 if (args
[i
] == 48) {
1013 bg
= clrmap(args
[i
+ 2]);
1020 case 'r': /* DECSTBM set scrolling region to (top, bottom) rows */
1021 set_region(args
[0], args
[1]);
1023 case 'c': /* DA return ESC [ ? 6 c (VT102) */
1024 csiseq_da(priv
== '?' ? args
[0] | 0x80 : args
[0]);
1026 case 'h': /* SM set mode */
1027 for (i
= 0; i
< n
; i
++)
1028 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 1);
1031 case 'l': /* RM reset mode */
1032 for (i
= 0; i
< n
; i
++)
1033 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 0);
1036 case 'P': /* DCH delete characters on current line */
1037 delete_chars(LIMIT(args
[0], 1, pad_cols() - col
));
1039 case '@': /* ICH insert blank characters */
1040 insert_chars(LIMIT(args
[0], 1, pad_cols() - col
));
1042 case 'n': /* DSR device status report */
1043 csiseq_dsr(args
[0]);
1045 case 'G': /* CHA move cursor to column in current row */
1046 advance(0, MAX(0, args
[0] - 1) - col
, 0);
1048 case 'X': /* ECH erase characters on current line */
1049 kill_chars(col
, MIN(col
+ MAX(1, args
[0]), pad_cols()));
1051 case '[': /* IGN ignored control sequence */
1052 case 'E': /* CNL move cursor down and to column 1 */
1053 case 'F': /* CPL move cursor up and to column 1 */
1054 case 'g': /* TBC clear tab stop (CSI 3 g = clear all stops) */
1055 case 'q': /* DECLL set keyboard LEDs */
1056 case 's': /* CUPSV save cursor position */
1057 case 'u': /* CUPRS restore cursor position */
1058 case '`': /* HPA move cursor to column in current row */
1060 unknown("csiseq", c
);
1065 static void csiseq_da(int c
)
1069 term_sendstr("\x1b[?6c");
1072 /* we don't care much about cursor shape */
1073 /* printf("csiseq_da <0x%x>\n", c); */
1078 static void csiseq_dsr(int c
)
1080 char status
[1 << 5];
1083 term_sendstr("\x1b[0n");
1086 sprintf(status
, "\x1b[%d;%dR",
1087 (origin() ? row
- top
: row
) + 1, col
+ 1);
1088 term_sendstr(status
);
1091 unknown("csiseq_dsr", c
);
1096 /* ANSI/DEC specified modes for SM/RM ANSI Specified Modes */
1097 static void modeseq(int c
, int set
)
1100 case 0x87: /* DECAWM Auto Wrap */
1101 mode
= BIT_SET(mode
, MODE_WRAP
, set
);
1103 case 0x99: /* DECTCEM Cursor on (set); Cursor off (reset) */
1104 mode
= BIT_SET(mode
, MODE_CURSOR
, set
);
1106 case 0x86: /* DECOM Sets relative coordinates (set); Sets absolute coordinates (reset) */
1107 mode
= BIT_SET(mode
, MODE_ORIGIN
, set
);
1109 case 0x14: /* LNM Line Feed / New Line Mode */
1110 mode
= BIT_SET(mode
, MODE_AUTOCR
, set
);
1112 case 0x04: /* IRM insertion/replacement mode (always reset) */
1113 mode
= BIT_SET(mode
, MODE_INSERT
, set
);
1115 case 0x00: /* IGN Error (Ignored) */
1116 case 0x01: /* GATM guarded-area transfer mode (ignored) */
1117 case 0x02: /* KAM keyboard action mode (always reset) */
1118 case 0x03: /* CRM control representation mode (always reset) */
1119 case 0x05: /* SRTM status-reporting transfer mode */
1120 case 0x06: /* ERM erasure mode (always set) */
1121 case 0x07: /* VEM vertical editing mode (ignored) */
1122 case 0x0a: /* HEM horizontal editing mode */
1123 case 0x0b: /* PUM positioning unit mode */
1124 case 0x0c: /* SRM send/receive mode (echo on/off) */
1125 case 0x0d: /* FEAM format effector action mode */
1126 case 0x0e: /* FETM format effector transfer mode */
1127 case 0x0f: /* MATM multiple area transfer mode */
1128 case 0x10: /* TTM transfer termination mode */
1129 case 0x11: /* SATM selected area transfer mode */
1130 case 0x12: /* TSM tabulation stop mode */
1131 case 0x13: /* EBM editing boundary mode */
1132 /* DEC Private Modes: "?NUM" -> (NUM | 0x80) */
1133 case 0x80: /* IGN Error (Ignored) */
1134 case 0x81: /* DECCKM Cursorkeys application (set); Cursorkeys normal (reset) */
1135 case 0x82: /* DECANM ANSI (set); VT52 (reset) */
1136 case 0x83: /* DECCOLM 132 columns (set); 80 columns (reset) */
1137 case 0x84: /* DECSCLM Jump scroll (set); Smooth scroll (reset) */
1138 case 0x85: /* DECSCNM Reverse screen (set); Normal screen (reset) */
1139 case 0x88: /* DECARM Auto Repeat */
1140 case 0x89: /* DECINLM Interlace */
1141 case 0x92: /* DECPFF Send FF to printer after print screen (set); No char after PS (reset) */
1142 case 0x93: /* DECPEX Print screen: prints full screen (set); prints scroll region (reset) */
1144 unknown("modeseq", c
);