-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathtty.c
1751 lines (1602 loc) · 59 KB
/
tty.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* TTY Terminal handling for QEmacs
*
* Copyright (c) 2000-2001 Fabrice Bellard.
* Copyright (c) 2002-2017 Charlie Gordon.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#ifdef X11_IN_TTY
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#endif
#include "qe.h"
#if MAX_UNICODE_DISPLAY > 0xFFFF
typedef uint64_t TTYChar;
/* TTY composite style has 13-bit BG color, 4 attribute bits and 13-bit FG color */
#define TTY_STYLE_BITS 32
#define TTY_FG_COLORS 7936
#define TTY_BG_COLORS 7936
#define TTY_RGB_FG(r,g,b) (0x1000 | (((r) & 0xF0) << 4) | ((g) & 0xF0) | ((b) >> 4))
#define TTY_RGB_BG(r,g,b) (0x1000 | (((r) & 0xF0) << 4) | ((g) & 0xF0) | ((b) >> 4))
#define TTY_CHAR(ch,fg,bg) ((uint32_t)(ch) | ((uint64_t)((fg) | ((bg) << 17)) << 32))
#define TTY_CHAR2(ch,col) ((uint32_t)(ch) | ((uint64_t)(col) << 32))
#define TTY_CHAR_GET_CH(cc) ((uint32_t)(cc))
#define TTY_CHAR_GET_COL(cc) ((uint32_t)((cc) >> 32))
#define TTY_CHAR_GET_ATTR(cc) ((uint32_t)((cc) >> 32) & 0x1E000)
#define TTY_CHAR_GET_FG(cc) ((uint32_t)((cc) >> 32) & 0x1FFF)
#define TTY_CHAR_GET_BG(cc) ((uint32_t)((cc) >> (32 + 17)) & 0x1FFF)
#define TTY_CHAR_DEFAULT TTY_CHAR(' ', 7, 0)
#define TTY_CHAR_COMB 0x200000
#define TTY_CHAR_BAD 0xFFFD
#define TTY_CHAR_NONE 0xFFFFFFFF
#define TTY_BOLD 0x02000
#define TTY_UNDERLINE 0x04000
#define TTY_ITALIC 0x08000
#define TTY_BLINK 0x10000
#define COMB_CACHE_SIZE 2048
#else
typedef uint32_t TTYChar;
/* TTY composite style has 4-bit BG color, 4 attribute bits and 8-bit FG color */
#define TTY_STYLE_BITS 16
#define TTY_FG_COLORS 256
#define TTY_BG_COLORS 16
#define TTY_RGB_FG(r,g,b) (16 + ((r) / 51 * 36) + ((g) / 51 * 6) | ((b) / 51))
#define TTY_RGB_BG(r,g,b) qe_map_color(QERGB(r, g, b), xterm_colors, 16, NULL)
#define TTY_CHAR(ch,fg,bg) ((uint32_t)(ch) | ((uint32_t)((fg) | ((bg) << 12)) << 16))
#define TTY_CHAR2(ch,col) ((uint32_t)(ch) | ((uint32_t)(col) << 16))
#define TTY_CHAR_GET_CH(cc) ((cc) & 0xFFFF)
#define TTY_CHAR_GET_COL(cc) (((cc) >> 16) & 0xFFFF)
#define TTY_CHAR_GET_ATTR(cc) ((uint32_t)((cc) >> 16) & 0x0F000)
#define TTY_CHAR_GET_FG(cc) (((cc) >> 16) & 0xFF)
#define TTY_CHAR_GET_BG(cc) (((cc) >> (16 + 12)) & 0x0F)
#define TTY_CHAR_DEFAULT TTY_CHAR(' ', 7, 0)
#define TTY_CHAR_BAD 0xFFFD
#define TTY_CHAR_NONE 0xFFFF
#define TTY_BOLD 0x0100
#define TTY_UNDERLINE 0x0200
#define TTY_ITALIC 0x0400
#define TTY_BLINK 0x0800
#define COMB_CACHE_SIZE 1
#endif
#if defined(CONFIG_UNLOCKIO)
# define TTY_PUTC(c,f) putc_unlocked(c, f)
#ifdef CONFIG_DARWIN
# define TTY_FWRITE(b,s,n,f) fwrite(b, s, n, f)
#else
# define TTY_FWRITE(b,s,n,f) fwrite_unlocked(b, s, n, f)
#endif
# define TTY_FPRINTF fprintf
static inline void TTY_FPUTS(const char *s, FILE *fp) {
TTY_FWRITE(s, 1, strlen(s), fp);
}
#else
# define TTY_PUTC(c,f) putc(c, f)
# define TTY_FWRITE(b,s,n,f) fwrite(b, s, n, f)
# define TTY_FPRINTF fprintf
# define TTY_FPUTS fputs
#endif
enum InputState {
IS_NORM,
IS_ESC,
IS_CSI,
IS_CSI2,
IS_ESC2,
};
enum TermCode {
TERM_UNKNOWN = 0,
TERM_ANSI,
TERM_VT100,
TERM_XTERM,
TERM_LINUX,
TERM_CYGWIN,
TERM_TW100,
};
typedef struct TTYState {
TTYChar *screen;
int screen_size;
unsigned char *line_updated;
struct termios oldtty;
int cursor_x, cursor_y;
/* input handling */
enum InputState input_state;
int input_param, input_param2;
int utf8_index;
unsigned char buf[8];
char *term_name;
enum TermCode term_code;
int term_flags;
#define KBS_CONTROL_H 0x01
#define USE_ERASE_END_OF_LINE 0x02
#define USE_BOLD_AS_BRIGHT_FG 0x04
#define USE_BLINK_AS_BRIGHT_BG 0x08
#define USE_256_COLORS 0x10
#define USE_TRUE_COLORS 0x20
/* number of colors supported by the actual terminal */
const QEColor *term_colors;
int term_fg_colors_count;
int term_bg_colors_count;
/* number of colors supported by the virtual terminal */
const QEColor *tty_colors;
int tty_fg_colors_count;
int tty_bg_colors_count;
unsigned int comb_cache[COMB_CACHE_SIZE];
#ifdef X11_IN_TTY
Display* display;
Window window;
Atom xa_clipboard;
Atom xa_targets;
Atom xa_utf8_string;
Atom xa_utf8_string2;
Atom xa_utf8_string3;
#endif
} TTYState;
static QEditScreen *tty_screen; /* for tty_term_exit and tty_term_resize */
static void tty_dpy_invalidate(QEditScreen *s);
static void tty_term_resize(int sig);
static void tty_term_exit(void);
static void tty_read_handler(void *opaque);
#ifdef X11_IN_TTY
static void x11_in_tty_read_handler(void *opaque);
#endif
static int tty_dpy_probe(void)
{
return 1;
}
static int tty_dpy_init(QEditScreen *s,
qe__unused__ int w, qe__unused__ int h)
{
TTYState *ts;
struct termios tty;
struct sigaction sig;
const char *p;
ts = calloc(1, sizeof(*ts));
if (ts == NULL) {
return 1;
}
tty_screen = s;
s->STDIN = stdin;
s->STDOUT = stdout;
s->priv_data = ts;
s->media = CSS_MEDIA_TTY;
/* Derive some settings from the TERM environment variable */
ts->term_code = TERM_UNKNOWN;
ts->term_flags = USE_ERASE_END_OF_LINE;
ts->term_colors = xterm_colors;
ts->term_fg_colors_count = 16;
ts->term_bg_colors_count = 16;
ts->term_name = getenv("TERM");
if (ts->term_name) {
/* linux and xterm -> kbs=\177
* ansi cygwin vt100 -> kbs=^H
*/
if (strstart(ts->term_name, "ansi", NULL)) {
ts->term_code = TERM_ANSI;
ts->term_flags |= KBS_CONTROL_H;
} else
if (strstart(ts->term_name, "vt100", NULL)) {
ts->term_code = TERM_VT100;
ts->term_flags |= KBS_CONTROL_H;
} else
if (strstart(ts->term_name, "xterm", NULL)) {
ts->term_code = TERM_XTERM;
} else
if (strstart(ts->term_name, "linux", NULL)) {
ts->term_code = TERM_LINUX;
} else
if (strstart(ts->term_name, "cygwin", NULL)) {
ts->term_code = TERM_CYGWIN;
ts->term_flags |= KBS_CONTROL_H |
USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG;
} else
if (strstart(ts->term_name, "tw100", NULL)) {
ts->term_code = TERM_TW100;
ts->term_flags |= KBS_CONTROL_H |
USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG;
}
}
if (strstr(ts->term_name, "true") || strstr(ts->term_name, "24")) {
ts->term_flags |= USE_TRUE_COLORS | USE_256_COLORS;
}
if (strstr(ts->term_name, "256")) {
ts->term_flags |= USE_256_COLORS;
}
if ((p = getenv("TERM_PROGRAM")) && strequal(p, "iTerm.app")) {
/* iTerm and iTerm2 support true colors */
ts->term_flags |= USE_TRUE_COLORS | USE_256_COLORS;
}
/* actual color mode can be forced via environment variables */
/* XXX: should have qemacs variables too */
if ((p = getenv("COLORTERM")) != NULL) {
/* Check COLORTERM environment variable as documented in
* https://gist.github.com/XVilka/8346728
*/
#if TTY_STYLE_BITS == 32
if (strstr(p, "truecolor")
|| strstr(p, "24bit")
|| strstr(p, "hicolor")) {
ts->term_flags &= ~(USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG |
USE_256_COLORS | USE_TRUE_COLORS);
ts->term_flags |= USE_TRUE_COLORS;
} else
#endif
if (strstr(p, "256")) {
ts->term_flags &= ~(USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG |
USE_256_COLORS | USE_TRUE_COLORS);
ts->term_flags |= USE_256_COLORS;
} else
if (strstr(p, "16")) {
ts->term_flags &= ~(USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG |
USE_256_COLORS | USE_TRUE_COLORS);
}
}
#if TTY_STYLE_BITS == 32
if (ts->term_flags & USE_TRUE_COLORS) {
ts->term_fg_colors_count = 0x1000000;
ts->term_bg_colors_count = 0x1000000;
} else
if (ts->term_flags & USE_256_COLORS) {
ts->term_fg_colors_count = 256;
ts->term_bg_colors_count = 256;
}
#else
ts->term_flags &= ~USE_TRUE_COLORS;
if (ts->term_flags & USE_256_COLORS) {
ts->term_fg_colors_count = 256;
}
#endif
ts->tty_bg_colors_count = min(ts->term_bg_colors_count, TTY_BG_COLORS);
ts->tty_fg_colors_count = min(ts->term_fg_colors_count, TTY_FG_COLORS);
ts->tty_colors = xterm_colors;
tcgetattr(fileno(s->STDIN), &tty);
ts->oldtty = tty;
tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP |
INLCR | IGNCR | ICRNL | IXON);
tty.c_oflag |= OPOST;
tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
tty.c_cflag &= ~(CSIZE | PARENB);
tty.c_cflag |= CS8;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
tcsetattr(fileno(s->STDIN), TCSANOW, &tty);
/* First switch to full screen mode */
#if 0
printf("\033[?1048h\033[?1047h" /* enable cup */
"\033)0\033(B" /* select character sets in block 0 and 1 */
"\017"); /* shift out */
#else
TTY_FPRINTF(s->STDOUT,
"\033[?1049h" /* enter_ca_mode */
"\033[m\033(B" /* exit_attribute_mode */
"\033[4l" /* exit_insert_mode */
"\033[?7h" /* enter_am_mode */
"\033[39;49m" /* orig_pair */
"\033[?1h\033=" /* keypad_xmit */
);
#endif
/* Get charset from command line option */
s->charset = find_charset(qe_state.tty_charset);
if (ts->term_code == TERM_CYGWIN)
s->charset = &charset_8859_1;
if (ts->term_code == TERM_TW100)
s->charset = find_charset("atarist");
if (!s->charset && !isatty(fileno(s->STDOUT)))
s->charset = &charset_8859_1;
if (!s->charset) {
int y, x, n;
s->charset = &charset_8859_1;
/* Test UTF8 support by looking at the cursor position (idea
* from Ricardas Cepas <[email protected]>). Since uClibc actually
* tests to ensure that the format string is a valid multibyte
* sequence in the current locale (ANSI/ISO C99), use a format
* specifier of %s to avoid printf() failing with EILSEQ.
*/
/* ^X ^Z ^M \170101 */
//printf("%s", "\030\032" "\r\xEF\x81\x81" "\033[6n\033D");
/* Just print utf-8 encoding for eacute and check cursor position */
TTY_FPRINTF(s->STDOUT, "%s",
"\030\032" "\r\xC3\xA9" "\033[6n\033D");
fflush(s->STDOUT);
/* XXX: should have a timeout to avoid locking on unsupported terminals */
n = fscanf(s->STDIN, "\033[%d;%d", &y, &x); /* get cursor position */
TTY_FPRINTF(s->STDOUT, "\r \r"); /* go back, erase 3 chars */
if (n == 2 && x == 2) {
s->charset = &charset_utf8;
}
}
put_status(NULL, "tty charset: %s", s->charset->name);
atexit(tty_term_exit);
sig.sa_handler = tty_term_resize;
sigemptyset(&sig.sa_mask);
sig.sa_flags = 0;
sigaction(SIGWINCH, &sig, NULL);
fcntl(fileno(s->STDIN), F_SETFL, O_NONBLOCK);
/* If stdout is to a pty, make sure we aren't in nonblocking mode.
* Otherwise, the printf()s in term_flush() can fail with EAGAIN,
* causing repaint errors when running in an xterm or in a screen
* session. */
fcntl(fileno(s->STDOUT), F_SETFL, 0);
set_read_handler(fileno(s->STDIN), tty_read_handler, s);
tty_dpy_invalidate(s);
if (ts->term_flags & KBS_CONTROL_H) {
do_toggle_control_h(NULL, 1);
}
#ifdef X11_IN_TTY
ts->display = XOpenDisplay(NULL);
if(ts->display != NULL) {
//ts->window = DefaultRootWindow(ts->display);
ts->window = XCreateSimpleWindow(ts->display, DefaultRootWindow(ts->display),
0, 0, 1, 1, 4, 0, 0);
ts->xa_targets = XInternAtom(ts->display, "TARGETS", False);
ts->xa_utf8_string = XInternAtom(ts->display, "UTF8_STRING", False);
ts->xa_utf8_string2 = XInternAtom(ts->display, "text/plain;charset=UTF-8", False);
ts->xa_utf8_string3 = XInternAtom(ts->display, "text/plain;charset=utf-8", False);
int fd = ConnectionNumber(ts->display);
set_read_handler(fd, x11_in_tty_read_handler, s);
}
#endif
return 0;
}
static void tty_dpy_close(QEditScreen *s)
{
TTYState *ts = s->priv_data;
fcntl(fileno(s->STDIN), F_SETFL, 0);
#if 0
/* go to the last line */
printf("\033[%d;%dH\033[m\033[K"
"\033[?1047l\033[?1048l", /* disable cup */
s->height, 1);
#else
/* go to last line and clear it */
TTY_FPRINTF(s->STDOUT, "\033[%d;%dH" "\033[m\033[K", s->height, 1);
TTY_FPRINTF(s->STDOUT,
"\033[?1049l" /* exit_ca_mode */
"\033[?1l\033>" /* keypad_local */
"\033[?25h" /* show cursor */
"\r\033[m\033[K" /* return erase eol */
);
#endif
fflush(s->STDOUT);
qe_free(&ts->screen);
qe_free(&ts->line_updated);
}
static void tty_term_exit(void)
{
QEditScreen *s = tty_screen;
if (s) {
TTYState *ts = s->priv_data;
if (ts) {
tcsetattr(fileno(s->STDIN), TCSANOW, &ts->oldtty);
}
}
}
static void tty_term_resize(qe__unused__ int sig)
{
QEditScreen *s = tty_screen;
if (s) {
tty_dpy_invalidate(s);
//fprintf(stderr, "tty_term_resize: width=%d, height=%d\n", s->width, s->height);
url_redisplay();
}
}
static void tty_dpy_invalidate(QEditScreen *s)
{
TTYState *ts;
struct winsize ws;
int i, count, size;
const char *p;
TTYChar tc;
if (s == NULL)
return;
ts = s->priv_data;
/* get screen default values from environment */
s->width = (p = getenv("COLUMNS")) != NULL ? atoi(p) : 80;
s->height = (p = getenv("LINES")) != NULL ? atoi(p) : 25;
/* update screen dimensions from pseudo tty ioctl */
if (ioctl(fileno(s->STDIN), TIOCGWINSZ, &ws) == 0) {
if (ws.ws_col >= 10 && ws.ws_row >= 4) {
s->width = ws.ws_col;
s->height = ws.ws_row;
}
}
if (s->width > MAX_SCREEN_WIDTH)
s->width = MAX_SCREEN_WIDTH;
if (s->height >= 10000)
s->height -= 10000;
if (s->height > MAX_SCREEN_LINES)
s->height = MAX_SCREEN_LINES;
if (s->height < 3)
s->height = 25;
count = s->width * s->height;
size = count * sizeof(TTYChar);
/* screen buffer + shadow buffer + extra slot for loop guard */
qe_realloc(&ts->screen, size * 2 + sizeof(TTYChar));
qe_realloc(&ts->line_updated, s->height);
ts->screen_size = count;
/* Erase shadow buffer to impossible value */
memset(ts->screen + count, 0xFF, size + sizeof(TTYChar));
/* Fill screen buffer with black spaces */
tc = TTY_CHAR_DEFAULT;
for (i = 0; i < count; i++) {
ts->screen[i] = tc;
}
/* All rows need refresh */
memset(ts->line_updated, 1, s->height);
s->clip_x1 = 0;
s->clip_y1 = 0;
s->clip_x2 = s->width;
s->clip_y2 = s->height;
}
static void tty_dpy_cursor_at(QEditScreen *s, int x1, int y1,
qe__unused__ int w, qe__unused__ int h)
{
TTYState *ts = s->priv_data;
ts->cursor_x = x1;
ts->cursor_y = y1;
}
static int tty_dpy_is_user_input_pending(QEditScreen *s)
{
fd_set rfds;
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
FD_ZERO(&rfds);
FD_SET(fileno(s->STDIN), &rfds);
if (select(fileno(s->STDIN) + 1, &rfds, NULL, NULL, &tv) > 0)
return 1;
else
return 0;
}
static int const csi_lookup[] = {
KEY_NONE, /* 0 */
KEY_HOME, /* 1 */
KEY_INSERT, /* 2 */
KEY_DELETE, /* 3 */
KEY_END, /* 4 */
KEY_PAGEUP, /* 5 */
KEY_PAGEDOWN, /* 6 */
KEY_NONE, /* 7 */
KEY_NONE, /* 8 */
KEY_NONE, /* 9 */
KEY_NONE, /* 10 */
KEY_F1, /* 11 */
KEY_F2, /* 12 */
KEY_F3, /* 13 */
KEY_F4, /* 14 */
KEY_F5, /* 15 */
KEY_NONE, /* 16 */
KEY_F6, /* 17 */
KEY_F7, /* 18 */
KEY_F8, /* 19 */
KEY_F9, /* 20 */
KEY_F10, /* 21 */
KEY_NONE, /* 22 */
KEY_F11, /* 23 */
KEY_F12, /* 24 */
KEY_F13, /* 25 */
KEY_F14, /* 26 */
KEY_NONE, /* 27 */
KEY_F15, /* 28 */
KEY_F16, /* 29 */
KEY_NONE, /* 30 */
KEY_F17, /* 31 */
KEY_F18, /* 32 */
KEY_F19, /* 33 */
KEY_F20, /* 34 */
};
static void tty_read_handler(void *opaque)
{
QEditScreen *s = opaque;
QEmacsState *qs = &qe_state;
TTYState *ts = s->priv_data;
QEEvent ev1, *ev = &ev1;
u8 buf[1];
int ch, len;
if (read(fileno(s->STDIN), buf, 1) != 1)
return;
if (qs->trace_buffer &&
qs->active_window &&
qs->active_window->b != qs->trace_buffer) {
eb_trace_bytes(buf, 1, EB_TRACE_TTY);
}
ch = buf[0];
switch (ts->input_state) {
case IS_NORM:
/* charset handling */
if (s->charset == &charset_utf8) {
if (ts->utf8_index && !(ch > 0x80 && ch < 0xc0)) {
/* not a valid continuation byte */
/* flush stored prefix, restart from current byte */
/* XXX: maybe should consume prefix byte as binary */
ts->utf8_index = 0;
}
ts->buf[ts->utf8_index] = ch;
len = utf8_length[ts->buf[0]];
if (len > 1) {
const char *p = cs8(ts->buf);
if (++ts->utf8_index < len) {
/* valid utf8 sequence underway, wait for next */
return;
}
ch = utf8_decode(&p);
}
}
if (ch == '\033') {
if (!tty_dpy_is_user_input_pending(s)) {
/* Trick to distinguish the ESC key from function and meta
* keys transmitting escape sequences starting with \033
* but followed immediately by more characters.
*/
goto the_end;
}
ts->input_state = IS_ESC;
} else {
goto the_end;
}
break;
case IS_ESC:
if (ch == '\033') {
/* cygwin A-right transmit ESC ESC[C ... */
goto the_end;
}
if (ch == '[') {
if (!tty_dpy_is_user_input_pending(s)) {
ch = KEY_META('[');
ts->input_state = IS_NORM;
goto the_end;
}
ts->input_state = IS_CSI;
ts->input_param = 0;
ts->input_param2 = 0;
} else if (ch == 'O') {
ts->input_state = IS_ESC2;
ts->input_param = 0;
ts->input_param2 = 0;
} else {
ch = KEY_META(ch);
ts->input_state = IS_NORM;
goto the_end;
}
break;
case IS_CSI:
if (ch >= '0' && ch <= '9') {
ts->input_param = ts->input_param * 10 + ch - '0';
break;
}
ts->input_state = IS_NORM;
switch (ch) {
case ';': /* multi ignore but the last 2 */
/* iterm2 uses this for some keys:
* C-up, C-down, C-left, C-right, S-left, S-right,
*/
ts->input_param2 = ts->input_param;
ts->input_param = 0;
ts->input_state = IS_CSI;
break;
case '[':
ts->input_state = IS_CSI2;
break;
case '~':
if (ts->input_param < countof(csi_lookup)) {
ch = csi_lookup[ts->input_param];
goto the_end;
}
break;
/* All these for ansi|cygwin */
default:
if (ts->input_param == 5) {
/* xterm CTRL-arrows */
/* iterm2 CTRL-arrows:
* C-up = ^[[1;5A
* C-down = ^[[1;5B
* C-left = ^[[1;5D
* C-right = ^[[1;5C
*/
switch (ch) {
case 'A': ch = KEY_CTRL_UP; goto the_end;
case 'B': ch = KEY_CTRL_DOWN; goto the_end;
case 'C': ch = KEY_CTRL_RIGHT; goto the_end;
case 'D': ch = KEY_CTRL_LEFT; goto the_end;
}
} else
if (ts->input_param == 2) {
/* iterm2 SHIFT-arrows:
* S-left = ^[[1;2D
* S-right = ^[[1;2C
* should set-mark if region not visible
*/
switch (ch) {
case 'A': ch = KEY_UP; goto the_end;
case 'B': ch = KEY_DOWN; goto the_end;
case 'C': ch = KEY_RIGHT; goto the_end;
case 'D': ch = KEY_LEFT; goto the_end;
}
} else {
switch (ch) {
case 'A': ch = KEY_UP; goto the_end; // kcuu1
case 'B': ch = KEY_DOWN; goto the_end; // kcud1
case 'C': ch = KEY_RIGHT; goto the_end; // kcuf1
case 'D': ch = KEY_LEFT; goto the_end; // kcub1
case 'F': ch = KEY_END; goto the_end; // kend
//case 'G': ch = KEY_CENTER; goto the_end; // kb2
case 'H': ch = KEY_HOME; goto the_end; // khome
case 'L': ch = KEY_INSERT; goto the_end; // kich1
//case 'M': ch = KEY_MOUSE; goto the_end; // kmous
case 'Z': ch = KEY_SHIFT_TAB; goto the_end; // kcbt
}
}
break;
}
break;
case IS_CSI2:
/* cygwin/linux terminal */
ts->input_state = IS_NORM;
switch (ch) {
case 'A': ch = KEY_F1; goto the_end;
case 'B': ch = KEY_F2; goto the_end;
case 'C': ch = KEY_F3; goto the_end;
case 'D': ch = KEY_F4; goto the_end;
case 'E': ch = KEY_F5; goto the_end;
}
break;
case IS_ESC2: // "\EO"
/* xterm/vt100 fn */
ts->input_state = IS_NORM;
switch (ch) {
case 'A': ch = KEY_UP; goto the_end;
case 'B': ch = KEY_DOWN; goto the_end;
case 'C': ch = KEY_RIGHT; goto the_end;
case 'D': ch = KEY_LEFT; goto the_end;
case 'F': ch = KEY_CTRL_RIGHT; goto the_end; /* iterm2 F-right */
case 'H': ch = KEY_CTRL_LEFT; goto the_end; /* iterm2 F-left */
case 'P': ch = KEY_F1; goto the_end;
case 'Q': ch = KEY_F2; goto the_end;
case 'R': ch = KEY_F3; goto the_end;
case 'S': ch = KEY_F4; goto the_end;
case 't': ch = KEY_F5; goto the_end;
case 'u': ch = KEY_F6; goto the_end;
case 'v': ch = KEY_F7; goto the_end;
case 'l': ch = KEY_F8; goto the_end;
case 'w': ch = KEY_F9; goto the_end;
case 'x': ch = KEY_F10; goto the_end;
}
break;
the_end:
ev->key_event.type = QE_KEY_EVENT;
ev->key_event.key = ch;
qe_handle_event(ev);
break;
}
}
#ifdef X11_IN_TTY
static void x11_in_tty_read_handler(void* opaque) {
QEditScreen *s = opaque;
QEmacsState *qs = &qe_state;
TTYState *ts = s->priv_data;
QEEvent ev1, *ev = &ev1;
while (XPending(ts->display)) {
XEvent xev;
XNextEvent(ts->display, &xev);
if(xev.type == SelectionRequest) {
XEvent reply;
XSelectionRequestEvent *rq = &xev.xselectionrequest;
reply.xselection.type = SelectionNotify;
reply.xselection.property = None;
reply.xselection.display = rq->display;
reply.xselection.requestor = rq->requestor;
reply.xselection.selection = rq->selection;
reply.xselection.target = rq->target;
reply.xselection.time = rq->time;
if (rq->target == ts->xa_targets) {
Atom target_list[5];
target_list[0] = ts->xa_targets;
target_list[1] = ts->xa_utf8_string;
target_list[2] = ts->xa_utf8_string2;
target_list[3] = ts->xa_utf8_string3;
target_list[4] = XA_STRING;
XChangeProperty(ts->display, rq->requestor, rq->property,
ts->xa_targets, 8*sizeof(target_list[0]), PropModeReplace,
(unsigned char*)&target_list, countof(target_list));
} else if(rq->target == XA_STRING) {
/* XXX: charset is ignored! */
/* get qemacs yank buffer */
EditBuffer* b = qs->yank_buffers[qs->yank_current];
if (!b) return;
unsigned char* buf = qe_malloc_array(unsigned char, b->total_size);
if (!buf) return;
eb_read(b, 0, buf, b->total_size);
XChangeProperty(ts->display, rq->requestor, rq->property,
XA_STRING, 8, PropModeReplace,
buf, b->total_size);
qe_free(&buf);
} else if (rq->target == ts->xa_utf8_string ||
rq->target == ts->xa_utf8_string2 ||
rq->target == ts->xa_utf8_string3) {
int len, size;
/* get qemacs yank buffer */
EditBuffer* b = qs->yank_buffers[qs->yank_current];
if (!b) return;
/* Get buffer contents encoded in utf-8-unix */
size = eb_get_content_size(b) + 1;
unsigned char* buf = qe_malloc_array(unsigned char, size);
if (!buf) return;
len = eb_get_contents(b, (char *)buf, size);
XChangeProperty(ts->display, rq->requestor, rq->property,
rq->target, 8, PropModeReplace,
buf, len);
qe_free(&buf);
}
reply.xselection.property = rq->property;
XSendEvent(ts->display, rq->requestor, True, 0, &reply);
XFlush(ts->display);
} else if(xev.type == SelectionRequest) {
/* ask qemacs to stop visual notification of selection */
ev->type = QE_SELECTION_CLEAR_EVENT;
qe_handle_event(ev);
}
}
}
#endif
static void tty_dpy_fill_rectangle(QEditScreen *s,
int x1, int y1, int w, int h, QEColor color)
{
TTYState *ts = s->priv_data;
int x, y;
int x2 = x1 + w;
int y2 = y1 + h;
int wrap = s->width - w;
TTYChar *ptr;
unsigned int bgcolor;
ptr = ts->screen + y1 * s->width + x1;
bgcolor = qe_map_color(color, ts->tty_colors, ts->tty_bg_colors_count, NULL);
for (y = y1; y < y2; y++) {
ts->line_updated[y] = 1;
for (x = x1; x < x2; x++) {
*ptr = TTY_CHAR(' ', 7, bgcolor);
ptr++;
}
ptr += wrap;
}
}
static void tty_dpy_xor_rectangle(QEditScreen *s,
int x1, int y1, int w, int h, QEColor color)
{
TTYState *ts = s->priv_data;
int x, y;
int x2 = x1 + w;
int y2 = y1 + h;
int wrap = s->width - w;
TTYChar *ptr;
ptr = ts->screen + y1 * s->width + x1;
for (y = y1; y < y2; y++) {
ts->line_updated[y] = 1;
for (x = x1; x < x2; x++) {
/* XXX: should reverse fg and bg */
*ptr ^= TTY_CHAR(0, 7, 7);
ptr++;
}
ptr += wrap;
}
}
/* XXX: could alloc font in wrapper */
static QEFont *tty_dpy_open_font(qe__unused__ QEditScreen *s,
qe__unused__ int style, qe__unused__ int size)
{
QEFont *font;
font = qe_mallocz(QEFont);
if (!font)
return NULL;
font->ascent = 0;
font->descent = 1;
font->priv_data = NULL;
return font;
}
static void tty_dpy_close_font(qe__unused__ QEditScreen *s, QEFont **fontp)
{
#ifdef X11_IN_TTY
TTYState *ts = s->priv_data;
XCloseDisplay(ts->display);
#endif
qe_free(fontp);
}
static inline int tty_term_glyph_width(qe__unused__ QEditScreen *s, unsigned int ucs)
{
/* fast test for majority of non-wide scripts */
if (ucs < 0x300)
return 1;
return unicode_tty_glyph_width(ucs);
}
static void tty_dpy_text_metrics(QEditScreen *s, qe__unused__ QEFont *font,
QECharMetrics *metrics,
const unsigned int *str, int len)
{
int i, x;
metrics->font_ascent = font->ascent;
metrics->font_descent = font->descent;
x = 0;
for (i = 0; i < len; i++)
x += tty_term_glyph_width(s, str[i]);
metrics->width = x;
}
#if MAX_UNICODE_DISPLAY > 0xFFFF
static unsigned int comb_cache_add(TTYState *ts, const unsigned int *seq, int len) {
unsigned int *ip;
for (ip = ts->comb_cache; *ip; ip += *ip & 0xFFFF) {
if (*ip == len + 1U && !memcmp(ip + 1, seq, len * sizeof(*ip))) {
return TTY_CHAR_COMB + (ip - ts->comb_cache);
}
}
for (ip = ts->comb_cache; *ip; ip += *ip & 0xFFFF) {
if (*ip >= 0x10001U + len) {
/* found free slot */
if (*ip > 0x10001U + len) {
/* split free block */
ip[len + 1] = *ip - (len + 1);
}
break;
}
}
if (*ip == 0) {
if ((ip - ts->comb_cache) + len + 1 >= countof(ts->comb_cache)) {
return TTY_CHAR_BAD;
}
ip[len + 1] = 0;
}
*ip = len + 1;
memcpy(ip + 1, seq, len * sizeof(*ip));
return TTY_CHAR_COMB + (ip - ts->comb_cache);
}
static void comb_cache_clean(TTYState *ts, const TTYChar *screen, int len) {
unsigned int *ip;
int i;
if (ts->comb_cache[0] == 0)
return;
for (ip = ts->comb_cache; *ip != 0; ip += *ip & 0xFFFF) {
*ip |= 0x10000;
}
ip = ts->comb_cache;
for (i = 0; i < len; i++) {
int ch = TTY_CHAR_GET_CH(screen[i]);
if (ch >= TTY_CHAR_COMB && ch < TTY_CHAR_COMB + countof(ts->comb_cache) - 1) {
ip[ch - TTY_CHAR_COMB] &= ~0x10000;
}
}
for (; *ip != 0; ip += *ip & 0xFFFF) {
if (*ip & 0x10000) {
while (ip[*ip & 0xFFFF] & 0x10000) {
/* coalesce subsequent free blocks */
*ip += ip[*ip & 0xFFFF] & 0xFFFF;
}
if (ip[*ip & 0xFFFF] == 0) {
/* truncate free list */
*ip = 0;
break;
}
}
}
}
static void comb_cache_describe(QEditScreen *s, EditBuffer *b) {
TTYState *ts = s->priv_data;
unsigned int *ip;
unsigned int i;
int w = 16;