forked from troglobit/MicroEMACS
-
Notifications
You must be signed in to change notification settings - Fork 0
/
termio.c
476 lines (415 loc) · 12.5 KB
/
termio.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
/*
* The functions in this file negotiate with the operating system for
* characters, and write characters in a barely buffered fashion on the display.
* All operating systems.
*/
#include <stdio.h>
#include "estruct.h"
#include "edef.h"
#if AMIGA
#define NEW 1006
#define AMG_MAXBUF 1024
static long terminal;
static char scrn_tmp[AMG_MAXBUF+1];
static int scrn_tmp_p = 0;
#endif
#if VMS
#include <stsdef.h>
#include <ssdef.h>
#include <descrip.h>
#include <iodef.h>
#include <ttdef.h>
#define NIBUF 128 /* Input buffer size */
#define NOBUF 1024 /* MM says bug buffers win! */
#define EFN 0 /* Event flag */
char obuf[NOBUF]; /* Output buffer */
int nobuf; /* # of bytes in above */
char ibuf[NIBUF]; /* Input buffer */
int nibuf; /* # of bytes in above */
int ibufi; /* Read index */
int oldmode[2]; /* Old TTY mode bits */
int newmode[2]; /* New TTY mode bits */
short iochan; /* TTY I/O channel */
#endif
#if CPM
#include <bdos.h>
#endif
#if MSDOS & LATTICE
#undef LATTICE
#undef CPM
#include <dos.h>
#undef CPM
union REGS rg; /* cpu register for use of DOS calls */
int nxtchar = -1; /* character held from type ahead */
#endif
#if MSDOS & AZTEC
struct regs { /* cpu register for use of DOS calls */
int ax, bx, cx, dx, si, di, ds, es; } rg;
int nxtchar = -1; /* character held from type ahead */
#endif
#if RAINBOW
#include "rainbow.h"
#endif
#if V7
#undef CTRL
#include <sgtty.h> /* for stty/gtty functions */
#include <signal.h>
struct sgttyb ostate; /* saved tty state */
struct sgttyb nstate; /* values for editor mode */
struct tchars otchars; /* Saved terminal special character set */
struct tchars ntchars = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
/* A lot of nothing */
#if BSD
#include <sys/ioctl.h> /* to get at the typeahead */
extern int rtfrmshell(); /* return from suspended shell */
#define TBUFSIZ 128
char tobuf[TBUFSIZ]; /* terminal output buffer */
#endif
#endif
#if linux
#include <termios.h>
#include <unistd.h>
struct termios ostate; /* saved tty state */
struct termios nstate; /* values for editor mode */
#endif
/*
* This function is called once to set up the terminal device streams.
* On VMS, it translates TT until it finds the terminal, then assigns
* a channel to it and sets it raw. On CPM it is a no-op.
*/
ttopen()
{
#if AMIGA
terminal = Open("RAW:1/1/639/199/MicroEMACS 3.6/Amiga", NEW);
#endif
#if VMS
struct dsc$descriptor idsc;
struct dsc$descriptor odsc;
char oname[40];
int iosb[2];
int status;
odsc.dsc$a_pointer = "TT";
odsc.dsc$w_length = strlen(odsc.dsc$a_pointer);
odsc.dsc$b_dtype = DSC$K_DTYPE_T;
odsc.dsc$b_class = DSC$K_CLASS_S;
idsc.dsc$b_dtype = DSC$K_DTYPE_T;
idsc.dsc$b_class = DSC$K_CLASS_S;
do {
idsc.dsc$a_pointer = odsc.dsc$a_pointer;
idsc.dsc$w_length = odsc.dsc$w_length;
odsc.dsc$a_pointer = &oname[0];
odsc.dsc$w_length = sizeof(oname);
status = LIB$SYS_TRNLOG(&idsc, &odsc.dsc$w_length, &odsc);
if (status!=SS$_NORMAL && status!=SS$_NOTRAN)
exit(status);
if (oname[0] == 0x1B) {
odsc.dsc$a_pointer += 4;
odsc.dsc$w_length -= 4;
}
} while (status == SS$_NORMAL);
status = SYS$ASSIGN(&odsc, &iochan, 0, 0);
if (status != SS$_NORMAL)
exit(status);
status = SYS$QIOW(EFN, iochan, IO$_SENSEMODE, iosb, 0, 0,
oldmode, sizeof(oldmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
exit(status);
newmode[0] = oldmode[0];
newmode[1] = oldmode[1] | TT$M_PASSALL | TT$M_NOECHO;
status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
newmode, sizeof(newmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
exit(status);
#endif
#if CPM
#endif
#if MSDOS & (HP150 == 0) & LATTICE
/* kill the ctrl-break interupt */
rg.h.ah = 0x33; /* control-break check dos call */
rg.h.al = 1; /* set the current state */
rg.h.dl = 0; /* set it OFF */
intdos(&rg, &rg); /* go for it! */
#endif
#if V7 | BSD
gtty(0, &ostate); /* save old state */
gtty(0, &nstate); /* get base of new state */
nstate.sg_flags |= RAW;
nstate.sg_flags &= ~(ECHO|CRMOD); /* no echo for now... */
stty(0, &nstate); /* set mode */
ioctl(0, TIOCGETC, &otchars); /* Save old characters */
ioctl(0, TIOCSETC, &ntchars); /* Place new character into K */
#if BSD
/* provide a smaller terminal output buffer so that
the type ahead detection works better (more often) */
setbuffer(stdout, &tobuf[0], TBUFSIZ);
signal(SIGTSTP,SIG_DFL); /* set signals so that we can */
signal(SIGCONT,rtfrmshell); /* suspend & restart emacs */
#endif
#endif
#if linux
/* Adjust output channel */
tcgetattr(1, &ostate); /* save old state */
tcgetattr(1, &nstate); /* get base of new state */
cfmakeraw(&nstate);
tcsetattr(1, TCSADRAIN, &nstate); /* set mode */
#endif
}
/*
* This function gets called just before we go back home to the command
* interpreter. On VMS it puts the terminal back in a reasonable state.
* Another no-operation on CPM.
*/
ttclose()
{
#if AMIGA
amg_flush();
Close(terminal);
#endif
#if VMS
int status;
int iosb[1];
ttflush();
status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
oldmode, sizeof(oldmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
exit(status);
status = SYS$DASSGN(iochan);
if (status != SS$_NORMAL)
exit(status);
#endif
#if CPM
#endif
#if MSDOS & (HP150 == 0) & LATTICE
/* restore the ctrl-break interupt */
rg.h.ah = 0x33; /* control-break check dos call */
rg.h.al = 1; /* set the current state */
rg.h.dl = 1; /* set it ON */
intdos(&rg, &rg); /* go for it! */
#endif
#if V7
stty(0, &ostate);
ioctl(0, TIOCSETC, &otchars); /* Place old character into K */
#endif
#if linux
tcsetattr(1, TCSADRAIN, &ostate); /* return to original mode */
#endif
}
/*
* Write a character to the display. On VMS, terminal output is buffered, and
* we just put the characters in the big array, after checking for overflow.
* On CPM terminal I/O unbuffered, so we just write the byte out. Ditto on
* MS-DOS (use the very very raw console output routine).
*/
ttputc(c)
#if AMIGA
char c;
#endif
{
#if AMIGA
scrn_tmp[scrn_tmp_p++] = c;
if(scrn_tmp_p>=AMG_MAXBUF)
amg_flush();
#endif
#if VMS
if (nobuf >= NOBUF)
ttflush();
obuf[nobuf++] = c;
#endif
#if CPM
bios(BCONOUT, c, 0);
#endif
#if MSDOS & CWC86
dosb(CONDIO, c, 0);
#endif
#if MSDOS & LATTICE
bdos(6, c, 0);
#endif
#if MSDOS & AZTEC
bdos(6, c, 0);
#endif
#if RAINBOW
Put_Char(c); /* fast video */
#endif
#if V7 || linux
fputc(c, stdout);
#endif
}
#if AMIGA
amg_flush()
{
if(scrn_tmp_p)
Write(terminal,scrn_tmp,scrn_tmp_p);
scrn_tmp_p = 0;
}
#endif
/*
* Flush terminal buffer. Does real work where the terminal output is buffered
* up. A no-operation on systems where byte at a time terminal I/O is done.
*/
ttflush()
{
#if AMIGA
amg_flush();
#endif
#if VMS
int status;
int iosb[2];
status = SS$_NORMAL;
if (nobuf != 0) {
status = SYS$QIOW(EFN, iochan, IO$_WRITELBLK|IO$M_NOFORMAT,
iosb, 0, 0, obuf, nobuf, 0, 0, 0, 0);
if (status == SS$_NORMAL)
status = iosb[0] & 0xFFFF;
nobuf = 0;
}
return (status);
#endif
#if CPM
#endif
#if MSDOS
#endif
#if V7 || linux
fflush(stdout);
#endif
}
/*
* Read a character from the terminal, performing no editing and doing no echo
* at all. More complex in VMS that almost anyplace else, which figures. Very
* simple on CPM, because the system can do exactly what you want.
*/
ttgetc()
{
#if AMIGA
char ch;
amg_flush();
Read(terminal, &ch, 1);
return(255 & (int)ch);
#endif
#if VMS
int status;
int iosb[2];
int term[2];
while (ibufi >= nibuf) {
ibufi = 0;
term[0] = 0;
term[1] = 0;
status = SYS$QIOW(EFN, iochan, IO$_READLBLK|IO$M_TIMED,
iosb, 0, 0, ibuf, NIBUF, 0, term, 0, 0);
if (status != SS$_NORMAL)
exit(status);
status = iosb[0] & 0xFFFF;
if (status!=SS$_NORMAL && status!=SS$_TIMEOUT)
exit(status);
nibuf = (iosb[0]>>16) + (iosb[1]>>16);
if (nibuf == 0) {
status = SYS$QIOW(EFN, iochan, IO$_READLBLK,
iosb, 0, 0, ibuf, 1, 0, term, 0, 0);
if (status != SS$_NORMAL
|| (status = (iosb[0]&0xFFFF)) != SS$_NORMAL)
exit(status);
nibuf = (iosb[0]>>16) + (iosb[1]>>16);
}
}
return (ibuf[ibufi++] & 0xFF); /* Allow multinational */
#endif
#if CPM
return (biosb(BCONIN, 0, 0));
#endif
#if RAINBOW
int Ch;
while ((Ch = Read_Keyboard()) < 0);
if ((Ch & Function_Key) == 0)
if (!((Ch & 0xFF) == 015 || (Ch & 0xFF) == 0177))
Ch &= 0xFF;
return Ch;
#endif
#if MSDOS & MWC86
return (dosb(CONRAW, 0, 0));
#endif
#if MSDOS & LATTICE
int c; /* character read */
int flags; /* cpu flags after dos call */
/* if a char already is ready, return it */
if (nxtchar >= 0) {
c = nxtchar;
nxtchar = -1;
return(c);
}
/* call the dos to get a char until one is there */
flags = 255;
while ((flags & 64) != 0) { /* while we don't yet have a char */
rg.h.ah = 6; /* dos Direct Console I/O call */
rg.h.dl = 255; /* console input */
flags = intdos(&rg, &rg);
c = rg.h.al; /* grab the char */
}
return(c & 255);
#endif
#if MSDOS & AZTEC
int c; /* character read */
int flags; /* cpu flags after dos call */
/* if a char already is ready, return it */
if (nxtchar >= 0) {
c = nxtchar;
nxtchar = -1;
return(c);
}
/* call the dos to get a char until one is there */
flags = 255;
while ((flags & 64) != 0) { /* while we don't yet have a char */
rg.ax = 1536; /* dos Direct Console I/O call */
rg.dx = 255; /* console input */
flags = sysint(33, &rg, &rg);
c = rg.ax & 255; /* grab the char */
}
return(c);
#endif
#if V7 || linux
return(127 & fgetc(stdin));
#endif
}
#if TYPEAH
/* typahead: Check to see if any characters are already in the
keyboard buffer
*/
typahead()
{
#if MSDOS & LATTICE
int c; /* character read */
int flags; /* cpu flags from dos call */
if (nxtchar >= 0)
return(TRUE);
rg.h.ah = 6; /* Direct Console I/O call */
rg.h.dl = 255; /* does console input */
flags = intdos(&rg, &rg);
c = rg.h.al; /* grab the character */
/* no character pending */
if ((flags & 64) != 0)
return(FALSE);
/* save the character and return true */
nxtchar = c;
return(TRUE);
#endif
#if MSDOS & AZTEC
int c; /* character read */
int flags; /* cpu flags from dos call */
if (nxtchar >= 0)
return(TRUE);
rg.ax = 1536; /* Direct Console I/O call */
rg.dx = 255; /* does console input */
flags = sysint(33, &rg, &rg);
c = rg.ax & 255; /* grab the character */
/* no character pending */
if ((flags & 64) != 0)
return(FALSE);
/* save the character and return true */
nxtchar = c;
return(TRUE);
#endif
#if V7 & BSD
int x; /* holds # of pending chars */
return((ioctl(0,FIONREAD,&x) < 0) ? 0 : x);
#endif
return(FALSE);
}
#endif