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
25 #define MODE_CLR8 0x400 /* colours 0-7 */
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 int *fgs
, *bgs
;
42 static unsigned int clr16
[16] = {
43 COLOR0
, COLOR1
, COLOR2
, COLOR3
, COLOR4
, COLOR5
, COLOR6
, COLOR7
,
44 COLOR8
, COLOR9
, COLORA
, COLORB
, COLORC
, COLORD
, COLORE
, COLORF
,
47 static int clrmap(int c
)
49 int g
= (c
- 232) * 10 + 8;
54 int ri
= (c
- 16) / 36 ;
55 int gi
= (c
- 16) % 36 / 6;
56 int bi
= (c
- 16) % 6;
57 int rc
= ri
? (ri
* 40 + 55) : 0;
58 int gc
= gi
? (gi
* 40 + 55) : 0;
59 int bc
= bi
? (bi
* 40 + 55) : 0;
60 return (rc
<< 16) | (gc
<< 8) | bc
;
62 return (g
<< 16) | (g
<< 8) | g
;
65 /* low level drawing and lazy updating */
67 static int fgcolor(void)
69 int c
= mode
& ATTR_REV
? bg
: fg
;
72 if (mode
& ATTR_ITALIC
)
77 static int bgcolor(void)
79 return mode
& ATTR_REV
? fg
: bg
;
82 /* assumes visible && !lazy */
83 static void _draw_pos(int r
, int c
, int cursor
)
85 int rev
= cursor
&& mode
& MODE_CURSOR
;
87 int fg
= rev
? bgs
[i
] : fgs
[i
];
88 int bg
= rev
? fgs
[i
] : bgs
[i
];
89 pad_put(screen
[i
], r
, c
, fg
, bg
);
92 /* assumes visible && !lazy */
93 static void _draw_row(int r
)
95 int cbg
, cch
; /* current background and character */
96 int fbg
, fsc
= -1; /* filling background and start column */
98 /* call pad_fill() only once for blank columns with identical backgrounds */
99 for (i
= 0; i
< pad_cols(); i
++) {
100 cbg
= bgs
[OFFSET(r
, i
)];
101 cch
= screen
[OFFSET(r
, i
)] ? screen
[OFFSET(r
, i
)] : ' ';
102 if (fsc
>= 0 && (cbg
!= fbg
|| cch
!= ' ')) {
103 pad_fill(r
, r
+ 1, fsc
, i
, fbg
& FN_C
);
108 } else if (fsc
< 0) {
113 pad_fill(r
, r
+ 1, fsc
>= 0 ? fsc
: pad_cols(), -1, cbg
& FN_C
);
116 static int candraw(int sr
, int er
)
120 for (i
= sr
; i
< er
; i
++)
122 return visible
&& !lazy
;
125 static void draw_rows(int sr
, int er
)
129 for (i
= sr
; i
< er
; i
++)
133 static void draw_cols(int r
, int sc
, int ec
)
136 if (candraw(r
, r
+ 1))
137 for (i
= sc
; i
< ec
; i
++)
141 static void draw_char(int ch
, int r
, int c
)
143 int i
= OFFSET(r
, c
);
147 if (candraw(r
, r
+ 1))
151 static void draw_cursor(int put
)
153 if (candraw(row
, row
+ 1))
154 _draw_pos(row
, col
, put
);
157 static void lazy_start(void)
159 memset(dirty
, 0, pad_rows() * sizeof(*dirty
));
163 static void lazy_flush(void)
166 if (!visible
|| !lazy
)
168 for (i
= 0; i
< pad_rows(); i
++)
172 _draw_pos(row
, col
, 1);
177 static void screen_reset(int i
, int n
)
180 candraw(i
/ pad_cols(), (i
+ n
) / pad_cols() + 1);
181 memset(screen
+ i
, 0, n
* sizeof(*screen
));
182 for (c
= 0; c
< n
; c
++)
184 for (c
= 0; c
< n
; c
++)
188 static void screen_move(int dst
, int src
, int n
)
190 int srow
= (MIN(src
, dst
) + (n
> 0 ? 0 : n
)) / pad_cols();
191 int drow
= (MAX(src
, dst
) + (n
> 0 ? n
: 0)) / pad_cols() + 1;
193 memmove(screen
+ dst
, screen
+ src
, n
* sizeof(*screen
));
194 memmove(fgs
+ dst
, fgs
+ src
, n
* sizeof(*fgs
));
195 memmove(bgs
+ dst
, bgs
+ src
, n
* sizeof(*bgs
));
198 /* terminal input buffering */
200 #define PTYLEN (1 << 16)
202 static char ptybuf
[PTYLEN
]; /* always emptied in term_read() */
203 static int ptylen
; /* buffer length */
204 static int ptycur
; /* current offset */
206 static int waitpty(int us
)
208 struct pollfd ufds
[1];
209 ufds
[0].fd
= term
->fd
;
210 ufds
[0].events
= POLLIN
;
211 return poll(ufds
, 1, us
) <= 0;
214 static int readpty(void)
218 return (unsigned char) ptybuf
[ptycur
++];
222 while ((nr
= read(term
->fd
, ptybuf
+ ptylen
, PTYLEN
- ptylen
)) > 0)
224 if (!ptylen
&& errno
== EAGAIN
&& !waitpty(100))
225 ptylen
= read(term
->fd
, ptybuf
, PTYLEN
);
227 return ptylen
> 0 ? (unsigned char) ptybuf
[0] : -1;
230 /* term interface functions */
232 void term_send(int c
)
236 write(term
->fd
, &b
, 1);
239 static void term_sendstr(char *s
)
242 write(term
->fd
, s
, strlen(s
));
245 static void term_blank(void)
247 screen_reset(0, pad_rows() * pad_cols());
249 pad_fill(0, -1, 0, -1, bgcolor() & FN_C
);
252 static void ctlseq(void);
256 while (ptycur
< ptylen
) {
257 if (visible
&& !lazy
&& ptylen
- ptycur
> 15)
264 static void term_reset(void)
269 mode
= MODE_CURSOR
| MODE_WRAP
| MODE_CLR8
;
275 static int _openpty(int *master
, int *slave
)
280 if ((*master
= open("/dev/ptmx", O_RDWR
)) == -1)
282 if (ioctl(*master
, TIOCSPTLCK
, &unlock
) == -1)
284 if (ioctl(*master
, TIOCGPTN
, &ptyno
) == -1)
286 sprintf(name
, "/dev/pts/%d", ptyno
);
287 *slave
= open(name
, O_RDWR
| O_NOCTTY
);
291 static void tio_setsize(int fd
)
294 winp
.ws_col
= pad_cols();
295 winp
.ws_row
= pad_rows();
298 ioctl(fd
, TIOCSWINSZ
, &winp
);
301 static void tio_login(int fd
)
304 ioctl(fd
, TIOCSCTTY
, NULL
);
313 static void execvep(char *cmd
, char **argv
, char **envp
)
316 char *p
= getenv("PATH");
317 execve(cmd
, argv
, envp
);
320 while (*p
&& *p
!= ':')
324 execve(path
, argv
, envp
);
330 static void envcpy(char **d
, char **s
, int len
)
333 for (i
= 0; i
< len
- 1 && s
[i
]; i
++)
338 static void envset(char **d
, char *env
)
341 int len
= strchr(env
, '=') - env
;
342 for (i
= 0; d
[i
]; i
++) {
343 if (memcmp(d
[i
], env
, len
))
349 extern char **environ
;
350 void term_exec(char **args
)
353 memset(term
, 0, sizeof(*term
));
354 if (_openpty(&master
, &slave
) == -1)
356 if ((term
->pid
= fork()) == -1)
359 char *envp
[256] = {NULL
};
360 envcpy(envp
, environ
, LEN(envp
) - 2);
361 envset(envp
, "TERM=" TERM
);
362 envset(envp
, pad_fbdev());
365 execvep(args
[0], args
, envp
);
370 term
->rows
= pad_rows();
371 term
->cols
= pad_cols();
372 fcntl(term
->fd
, F_SETFD
, fcntl(term
->fd
, F_GETFD
) | FD_CLOEXEC
);
373 fcntl(term
->fd
, F_SETFL
, fcntl(term
->fd
, F_GETFL
) | O_NONBLOCK
);
375 memset(term
->hist
, 0, sizeof(term
->hist
));
378 static void misc_save(struct term_state
*state
)
387 static void misc_load(struct term_state
*state
)
396 void term_save(struct term
*term
)
401 misc_save(&term
->cur
);
407 static void resizeupdate(int or, int oc
, int nr
, int nc
)
409 int dr
= row
>= nr
? row
- nr
+ 1 : 0;
411 screen_move(0, dr
* oc
, nr
* oc
);
412 i
= nc
<= oc
? 0 : nr
- 1;
413 while (i
>= 0 && i
< nr
) {
414 for (j
= 0; j
< nc
; j
++) {
416 int si
= i
< or && j
< oc
? i
* oc
+ j
: -1;
417 term
->screen
[di
] = si
>= 0 ? term
->screen
[si
] : 0;
418 term
->fgs
[di
] = si
>= 0 ? term
->fgs
[si
] : fgcolor();
419 term
->bgs
[di
] = si
>= 0 ? term
->bgs
[si
] : bgcolor();
421 i
= nc
<= oc
? i
+ 1 : i
- 1;
425 /* redraw the screen; if all is zero, update changed lines only */
426 void term_redraw(int all
)
429 if (term
->rows
!= pad_rows() || term
->cols
!= pad_cols()) {
430 tio_setsize(term
->fd
);
431 resizeupdate(term
->rows
, term
->cols
, pad_rows(), pad_cols());
432 if (bot
== term
->rows
)
434 term
->rows
= pad_rows();
435 term
->cols
= pad_cols();
436 top
= MIN(top
, term
->rows
);
437 bot
= MIN(bot
, term
->rows
);
438 row
= MIN(row
, term
->rows
- 1);
439 col
= MIN(col
, term
->cols
- 1);
442 pad_fill(pad_rows(), -1, 0, -1, BGCOLOR
);
444 memset(dirty
, 1, pad_rows() * sizeof(*dirty
));
446 if (all
|| !term
->hpos
)
450 pad_fill(0, -1, 0, -1, 0);
454 void term_load(struct term
*t
, int flags
)
457 misc_load(&term
->cur
);
458 screen
= term
->screen
;
472 memset(term
, 0, sizeof(*term
));
473 term_load(term
, visible
);
478 static int writeutf8(char *dst
, int c
)
483 *d
++ = 0xf0 | (c
>> 18);
485 } else if (c
> 0x7ff) {
486 *d
++ = 0xe0 | (c
>> 12);
488 } else if (c
> 0x7f) {
489 *d
++ = 0xc0 | (c
>> 6);
492 *d
++ = c
> 0 ? c
: ' ';
496 *d
++ = 0x80 | ((c
>> (l
* 6)) & 0x3f);
500 void term_screenshot(void)
503 int fd
= open(SCRSHOT
, O_CREAT
| O_TRUNC
| O_WRONLY
, 0600);
505 for (i
= 0; i
< pad_rows(); i
++) {
507 for (j
= 0; j
< pad_cols(); j
++)
508 if (~screen
[OFFSET(i
, j
)] & DWCHAR
)
509 s
+= writeutf8(s
, screen
[OFFSET(i
, j
)]);
511 write(fd
, buf
, s
- buf
);
516 /* high-level drawing functions */
518 static void empty_rows(int sr
, int er
)
520 screen_reset(OFFSET(sr
, 0), (er
- sr
) * pad_cols());
523 static void blank_rows(int sr
, int er
)
530 #define HISTROW(pos) (term->hist + ((term->hrow + NHIST - (pos)) % NHIST) * pad_cols())
532 static void scrl_rows(int nr
)
535 for (i
= 0; i
< nr
; i
++) {
536 memcpy(HISTROW(0), screen
+ i
* pad_cols(),
537 pad_cols() * sizeof(screen
[0]));
538 term
->hrow
= (term
->hrow
+ 1) % NHIST
;
542 void term_scrl(int scrl
)
545 int hpos
= LIMIT(term
->hpos
+ scrl
, 0, NHIST
);
552 memset(dirty
, 1, pad_rows() * sizeof(*dirty
));
553 for (i
= 0; i
< pad_rows(); i
++) {
554 int off
= (i
- hpos
) * pad_cols();
555 int *_scr
= i
< hpos
? HISTROW(hpos
- i
) : term
->screen
+ off
;
556 int *_fgs
= i
< hpos
? NULL
: term
->fgs
+ off
;
557 int *_bgs
= i
< hpos
? NULL
: term
->bgs
+ off
;
558 for (j
= 0; j
< pad_cols(); j
++)
559 pad_put(_scr
[j
], i
, j
, _fgs
? _fgs
[j
] : BGCOLOR
,
560 _bgs
? _bgs
[j
] : FGCOLOR
);
564 static void scroll_screen(int sr
, int nr
, int n
)
569 screen_move(OFFSET(sr
+ n
, 0), OFFSET(sr
, 0), nr
* pad_cols());
571 empty_rows(sr
, sr
+ n
);
573 empty_rows(sr
+ nr
+ n
, sr
+ nr
);
574 draw_rows(MIN(sr
, sr
+ n
), MAX(sr
+ nr
, sr
+ nr
+ n
));
578 static void insert_lines(int n
)
580 int sr
= MAX(top
, row
);
581 int nr
= bot
- row
- n
;
583 scroll_screen(sr
, nr
, n
);
586 static void delete_lines(int n
)
588 int r
= MAX(top
, row
);
590 int nr
= bot
- r
- n
;
592 scroll_screen(sr
, nr
, -n
);
595 static int origin(void)
597 return mode
& MODE_ORIGIN
;
600 static void move_cursor(int r
, int c
)
604 t
= origin() ? top
: 0;
605 b
= origin() ? bot
: pad_rows();
606 row
= LIMIT(r
, t
, b
- 1);
607 col
= LIMIT(c
, 0, pad_cols() - 1);
609 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 0);
612 static void set_region(int t
, int b
)
614 top
= LIMIT(t
- 1, 0, pad_rows() - 1);
615 bot
= LIMIT(b
? b
: pad_rows(), top
+ 1, pad_rows());
620 static void setattr(int m
)
622 if (!m
|| (m
/ 10) == 3)
643 mode
&= ~ATTR_ITALIC
;
650 fg
= m
> 37 ? FGCOLOR
: clrmap(m
- 30);
652 bg
= m
> 47 ? BGCOLOR
: clrmap(m
- 40);
654 fg
= clrmap(8 + m
- 90);
656 bg
= clrmap(8 + m
- 100);
660 static void kill_chars(int sc
, int ec
)
663 for (i
= sc
; i
< ec
; i
++)
664 draw_char(0, row
, i
);
668 static void move_chars(int sc
, int nc
, int n
)
671 screen_move(OFFSET(row
, sc
+ n
), OFFSET(row
, sc
), nc
);
673 screen_reset(OFFSET(row
, sc
), n
);
675 screen_reset(OFFSET(row
, pad_cols() + n
), -n
);
676 draw_cols(row
, MIN(sc
, sc
+ n
), pad_cols());
680 static void delete_chars(int n
)
683 int nc
= pad_cols() - sc
;
684 move_chars(sc
, nc
, -n
);
687 static void insert_chars(int n
)
689 int nc
= pad_cols() - col
- n
;
690 move_chars(col
, nc
, n
);
693 static void advance(int dr
, int dc
, int scrl
)
697 if (dr
&& r
>= bot
&& scrl
) {
699 int nr
= (bot
- top
) + n
;
701 scroll_screen(top
+ -n
, nr
, n
);
703 if (dr
&& r
< top
&& scrl
) {
705 int nr
= (bot
- top
) - n
;
707 scroll_screen(top
, nr
, n
);
709 r
= dr
? LIMIT(r
, top
, bot
- 1) : r
;
710 c
= LIMIT(c
, 0, pad_cols() - 1);
714 static void insertchar(int c
)
716 if (mode
& MODE_WRAPREADY
)
718 if (mode
& MODE_INSERT
)
720 draw_char(c
, row
, col
);
721 if (col
== pad_cols() - 1)
722 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 1);
728 /* partial vt102 implementation */
730 static void escseq(void);
731 static void escseq_cs(void);
732 static void escseq_g0(void);
733 static void escseq_g1(void);
734 static void escseq_g2(void);
735 static void escseq_g3(void);
736 static void csiseq(void);
737 static void csiseq_da(int c
);
738 static void csiseq_dsr(int c
);
739 static void modeseq(int c
, int set
);
741 /* comments taken from: http://www.ivarch.com/programs/termvt102.shtml */
743 static int readutf8(int c
)
749 while (l
< 6 && c
& (0x40 >> l
))
751 result
= (0x3f >> l
) & c
;
753 result
= (result
<< 6) | (readpty() & 0x3f);
757 #define unknown(ctl, c)
759 /* control sequences */
760 static void ctlseq(void)
764 case 0x09: /* HT horizontal tab to next tab stop */
765 advance(0, 8 - col
% 8, 0);
767 case 0x0a: /* LF line feed */
768 case 0x0b: /* VT line feed */
769 case 0x0c: /* FF line feed */
770 advance(1, (mode
& MODE_AUTOCR
) ? -col
: 0, 1);
772 case 0x08: /* BS backspace one column */
775 case 0x1b: /* ESC start escape sequence */
778 case 0x0d: /* CR carriage return */
781 case 0x9b: /* CSI equivalent to ESC [ */
784 case 0x00: /* NUL ignored */
785 case 0x07: /* BEL beep */
786 case 0x7f: /* DEL ignored */
788 case 0x05: /* ENQ trigger answerback message */
789 case 0x0e: /* SO activate G1 character set & newline */
790 case 0x0f: /* SI activate G0 character set */
791 case 0x11: /* XON resume transmission */
792 case 0x13: /* XOFF stop transmission, ignore characters */
793 case 0x18: /* CAN interrupt escape sequence */
794 case 0x1a: /* SUB interrupt escape sequence */
795 unknown("ctlseq", c
);
799 if (isdw(c
) && col
+ 1 == pad_cols() && ~mode
& MODE_WRAPREADY
)
804 insertchar(c
| DWCHAR
);
809 #define ESCM(c) (((c) & 0xf0) == 0x20)
810 #define ESCF(c) ((c) > 0x30 && (c) < 0x7f)
812 /* escape sequences */
813 static void escseq(void)
819 case '[': /* CSI control sequence introducer */
822 case '%': /* CS... escseq_cs table */
825 case '(': /* G0... escseq_g0 table */
828 case ')': /* G1... escseq_g1 table */
831 case '*': /* G2... escseq_g2 table */
834 case '+': /* G3... escseq_g3 table */
837 case '7': /* DECSC save state (position, charset, attributes) */
838 misc_save(&term
->sav
);
840 case '8': /* DECRC restore most recently saved state */
841 misc_load(&term
->sav
);
843 case 'M': /* RI reverse line feed */
846 case 'D': /* IND line feed */
849 case 'E': /* NEL newline */
852 case 'c': /* RIS reset */
855 case 'H': /* HTS set tab stop at current column */
856 case 'Z': /* DECID DEC private ID; return ESC [ ? 6 c (VT102) */
857 case '#': /* DECALN ("#8") DEC alignment test - fill screen with E's */
858 case '>': /* DECPNM set numeric keypad mode */
859 case '=': /* DECPAM set application keypad mode */
860 case 'N': /* SS2 select G2 charset for next char only */
861 case 'O': /* SS3 select G3 charset for next char only */
862 case 'P': /* DCS device control string (ended by ST) */
863 case 'X': /* SOS start of string */
864 case '^': /* PM privacy message (ended by ST) */
865 case '_': /* APC application program command (ended by ST) */
866 case '\\': /* ST string terminator */
867 case 'n': /* LS2 invoke G2 charset */
868 case 'o': /* LS3 invoke G3 charset */
869 case '|': /* LS3R invoke G3 charset as GR */
870 case '}': /* LS2R invoke G2 charset as GR */
871 case '~': /* LS1R invoke G1 charset as GR */
872 case ']': /* OSC operating system command */
873 case 'g': /* BEL alternate BEL */
875 unknown("escseq", c
);
880 static void escseq_cs(void)
884 case '@': /* CSDFL select default charset (ISO646/8859-1) */
885 case 'G': /* CSUTF8 select UTF-8 */
886 case '8': /* CSUTF8 select UTF-8 (obsolete) */
888 unknown("escseq_cs", c
);
893 static void escseq_g0(void)
897 case '8': /* G0DFL G0 charset = default mapping (ISO8859-1) */
898 case '0': /* G0GFX G0 charset = VT100 graphics mapping */
899 case 'U': /* G0ROM G0 charset = null mapping (straight to ROM) */
900 case 'K': /* G0USR G0 charset = user defined mapping */
901 case 'B': /* G0TXT G0 charset = ASCII mapping */
903 unknown("escseq_g0", c
);
908 static void escseq_g1(void)
912 case '8': /* G1DFL G1 charset = default mapping (ISO8859-1) */
913 case '0': /* G1GFX G1 charset = VT100 graphics mapping */
914 case 'U': /* G1ROM G1 charset = null mapping (straight to ROM) */
915 case 'K': /* G1USR G1 charset = user defined mapping */
916 case 'B': /* G1TXT G1 charset = ASCII mapping */
918 unknown("escseq_g1", c
);
923 static void escseq_g2(void)
927 case '8': /* G2DFL G2 charset = default mapping (ISO8859-1) */
928 case '0': /* G2GFX G2 charset = VT100 graphics mapping */
929 case 'U': /* G2ROM G2 charset = null mapping (straight to ROM) */
930 case 'K': /* G2USR G2 charset = user defined mapping */
932 unknown("escseq_g2", c
);
937 static void escseq_g3(void)
941 case '8': /* G3DFL G3 charset = default mapping (ISO8859-1) */
942 case '0': /* G3GFX G3 charset = VT100 graphics mapping */
943 case 'U': /* G3ROM G3 charset = null mapping (straight to ROM) */
944 case 'K': /* G3USR G3 charset = user defined mapping */
946 unknown("escseq_g3", c
);
951 static int absrow(int r
)
953 return origin() ? top
+ r
: r
;
956 #define CSIP(c) (((c) & 0xf0) == 0x30)
957 #define CSII(c) (((c) & 0xf0) == 0x20)
958 #define CSIF(c) ((c) >= 0x40 && (c) < 0x80)
960 #define MAXCSIARGS 32
961 /* ECMA-48 CSI sequences */
962 static void csiseq(void)
964 int args
[MAXCSIARGS
+ 8] = {0};
970 if (strchr("<=>?", c
)) {
977 arg
= arg
* 10 + (c
- '0');
988 case 'H': /* CUP move cursor to row, column */
989 case 'f': /* HVP move cursor to row, column */
990 move_cursor(absrow(MAX(0, args
[0] - 1)), MAX(0, args
[1] - 1));
992 case 'J': /* ED erase display */
995 kill_chars(col
, pad_cols());
996 blank_rows(row
+ 1, pad_rows());
999 kill_chars(0, col
+ 1);
1000 blank_rows(0, row
- 1);
1007 case 'A': /* CUU move cursor up */
1008 advance(-MAX(1, args
[0]), 0, 0);
1010 case 'e': /* VPR move cursor down */
1011 case 'B': /* CUD move cursor down */
1012 advance(MAX(1, args
[0]), 0, 0);
1014 case 'a': /* HPR move cursor right */
1015 case 'C': /* CUF move cursor right */
1016 advance(0, MAX(1, args
[0]), 0);
1018 case 'D': /* CUB move cursor left */
1019 advance(0, -MAX(1, args
[0]), 0);
1021 case 'K': /* EL erase line */
1024 kill_chars(col
, pad_cols());
1027 kill_chars(0, col
+ 1);
1030 kill_chars(0, pad_cols());
1034 case 'L': /* IL insert blank lines */
1035 if (row
>= top
&& row
< bot
)
1036 insert_lines(MAX(1, args
[0]));
1038 case 'M': /* DL delete lines */
1039 if (row
>= top
&& row
< bot
)
1040 delete_lines(MAX(1, args
[0]));
1042 case 'd': /* VPA move to row (current column) */
1043 move_cursor(absrow(MAX(1, args
[0]) - 1), col
);
1045 case 'm': /* SGR set graphic rendition */
1048 for (i
= 0; i
< n
; i
++) {
1049 if (args
[i
] == 38 && args
[i
+ 1] == 2) {
1051 fg
= (args
[i
+ 2] << 16) |
1052 (args
[i
+ 3] << 8) | args
[i
+ 4];
1056 if (args
[i
] == 38) {
1058 fg
= clrmap(args
[i
+ 2]);
1062 if (args
[i
] == 48 && args
[i
+ 1] == 2) {
1063 bg
= (args
[i
+ 2] << 16) |
1064 (args
[i
+ 3] << 8) | args
[i
+ 4];
1068 if (args
[i
] == 48) {
1069 bg
= clrmap(args
[i
+ 2]);
1075 if (mode
& MODE_CLR8
&& mode
& ATTR_BOLD
&& BRIGHTEN
)
1076 for (i
= 0; i
< 8; i
++)
1080 case 'r': /* DECSTBM set scrolling region to (top, bottom) rows */
1081 set_region(args
[0], args
[1]);
1083 case 'c': /* DA return ESC [ ? 6 c (VT102) */
1084 csiseq_da(priv
== '?' ? args
[0] | 0x80 : args
[0]);
1086 case 'h': /* SM set mode */
1087 for (i
= 0; i
< n
; i
++)
1088 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 1);
1091 case 'l': /* RM reset mode */
1092 for (i
= 0; i
< n
; i
++)
1093 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 0);
1096 case 'P': /* DCH delete characters on current line */
1097 delete_chars(LIMIT(args
[0], 1, pad_cols() - col
));
1099 case '@': /* ICH insert blank characters */
1100 insert_chars(LIMIT(args
[0], 1, pad_cols() - col
));
1102 case 'n': /* DSR device status report */
1103 csiseq_dsr(args
[0]);
1105 case 'G': /* CHA move cursor to column in current row */
1106 advance(0, MAX(0, args
[0] - 1) - col
, 0);
1108 case 'X': /* ECH erase characters on current line */
1109 kill_chars(col
, MIN(col
+ MAX(1, args
[0]), pad_cols()));
1111 case '[': /* IGN ignored control sequence */
1112 case 'E': /* CNL move cursor down and to column 1 */
1113 case 'F': /* CPL move cursor up and to column 1 */
1114 case 'g': /* TBC clear tab stop (CSI 3 g = clear all stops) */
1115 case 'q': /* DECLL set keyboard LEDs */
1116 case 's': /* CUPSV save cursor position */
1117 case 'u': /* CUPRS restore cursor position */
1118 case '`': /* HPA move cursor to column in current row */
1120 unknown("csiseq", c
);
1125 static void csiseq_da(int c
)
1129 term_sendstr("\x1b[?6c");
1132 /* we don't care much about cursor shape */
1133 /* printf("csiseq_da <0x%x>\n", c); */
1138 static void csiseq_dsr(int c
)
1140 char status
[1 << 5];
1143 term_sendstr("\x1b[0n");
1146 sprintf(status
, "\x1b[%d;%dR",
1147 (origin() ? row
- top
: row
) + 1, col
+ 1);
1148 term_sendstr(status
);
1151 unknown("csiseq_dsr", c
);
1156 /* ANSI/DEC specified modes for SM/RM ANSI Specified Modes */
1157 static void modeseq(int c
, int set
)
1160 case 0x87: /* DECAWM Auto Wrap */
1161 mode
= BIT_SET(mode
, MODE_WRAP
, set
);
1163 case 0x99: /* DECTCEM Cursor on (set); Cursor off (reset) */
1164 mode
= BIT_SET(mode
, MODE_CURSOR
, set
);
1166 case 0x86: /* DECOM Sets relative coordinates (set); Sets absolute coordinates (reset) */
1167 mode
= BIT_SET(mode
, MODE_ORIGIN
, set
);
1169 case 0x14: /* LNM Line Feed / New Line Mode */
1170 mode
= BIT_SET(mode
, MODE_AUTOCR
, set
);
1172 case 0x04: /* IRM insertion/replacement mode (always reset) */
1173 mode
= BIT_SET(mode
, MODE_INSERT
, set
);
1175 case 0x00: /* IGN Error (Ignored) */
1176 case 0x01: /* GATM guarded-area transfer mode (ignored) */
1177 case 0x02: /* KAM keyboard action mode (always reset) */
1178 case 0x03: /* CRM control representation mode (always reset) */
1179 case 0x05: /* SRTM status-reporting transfer mode */
1180 case 0x06: /* ERM erasure mode (always set) */
1181 case 0x07: /* VEM vertical editing mode (ignored) */
1182 case 0x0a: /* HEM horizontal editing mode */
1183 case 0x0b: /* PUM positioning unit mode */
1184 case 0x0c: /* SRM send/receive mode (echo on/off) */
1185 case 0x0d: /* FEAM format effector action mode */
1186 case 0x0e: /* FETM format effector transfer mode */
1187 case 0x0f: /* MATM multiple area transfer mode */
1188 case 0x10: /* TTM transfer termination mode */
1189 case 0x11: /* SATM selected area transfer mode */
1190 case 0x12: /* TSM tabulation stop mode */
1191 case 0x13: /* EBM editing boundary mode */
1192 /* DEC Private Modes: "?NUM" -> (NUM | 0x80) */
1193 case 0x80: /* IGN Error (Ignored) */
1194 case 0x81: /* DECCKM Cursorkeys application (set); Cursorkeys normal (reset) */
1195 case 0x82: /* DECANM ANSI (set); VT52 (reset) */
1196 case 0x83: /* DECCOLM 132 columns (set); 80 columns (reset) */
1197 case 0x84: /* DECSCLM Jump scroll (set); Smooth scroll (reset) */
1198 case 0x85: /* DECSCNM Reverse screen (set); Normal screen (reset) */
1199 case 0x88: /* DECARM Auto Repeat */
1200 case 0x89: /* DECINLM Interlace */
1201 case 0x92: /* DECPFF Send FF to printer after print screen (set); No char after PS (reset) */
1202 case 0x93: /* DECPEX Print screen: prints full screen (set); prints scroll region (reset) */
1204 unknown("modeseq", c
);