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
|
/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <caml/fail.h>
#include "unixsupport.h"
#ifdef HAS_TERMIOS
#include <termios.h>
#include <errno.h>
static struct termios terminal_status;
enum { Bool, Enum, Speed, Char, End };
enum { Input, Output };
#define iflags ((long)(&terminal_status.c_iflag))
#define oflags ((long)(&terminal_status.c_oflag))
#define cflags ((long)(&terminal_status.c_cflag))
#define lflags ((long)(&terminal_status.c_lflag))
/* Number of fields in the terminal_io record field. Cf. unix.mli */
#define NFIELDS 38
/* Structure of the terminal_io record. Cf. unix.mli */
static long terminal_io_descr[] = {
/* Input modes */
Bool, iflags, IGNBRK,
Bool, iflags, BRKINT,
Bool, iflags, IGNPAR,
Bool, iflags, PARMRK,
Bool, iflags, INPCK,
Bool, iflags, ISTRIP,
Bool, iflags, INLCR,
Bool, iflags, IGNCR,
Bool, iflags, ICRNL,
Bool, iflags, IXON,
Bool, iflags, IXOFF,
/* Output modes */
Bool, oflags, OPOST,
/* Control modes */
Speed, Output,
Speed, Input,
Enum, cflags, 5, 4, CSIZE, CS5, CS6, CS7, CS8,
Enum, cflags, 1, 2, CSTOPB, 0, CSTOPB,
Bool, cflags, CREAD,
Bool, cflags, PARENB,
Bool, cflags, PARODD,
Bool, cflags, HUPCL,
Bool, cflags, CLOCAL,
/* Local modes */
Bool, lflags, ISIG,
Bool, lflags, ICANON,
Bool, lflags, NOFLSH,
Bool, lflags, ECHO,
Bool, lflags, ECHOE,
Bool, lflags, ECHOK,
Bool, lflags, ECHONL,
/* Control characters */
Char, VINTR,
Char, VQUIT,
Char, VERASE,
Char, VKILL,
Char, VEOF,
Char, VEOL,
Char, VMIN,
Char, VTIME,
Char, VSTART,
Char, VSTOP,
End
};
#undef iflags
#undef oflags
#undef cflags
#undef lflags
static struct {
speed_t speed;
int baud;
} speedtable[] = {
/* standard speeds */
{B0, 0},
{B50, 50},
{B75, 75},
{B110, 110},
{B134, 134},
{B150, 150},
#ifdef B200
/* Shouldn't need to be ifdef'd but I'm not sure it's available everywhere. */
{B200, 200},
#endif
{B300, 300},
{B600, 600},
{B1200, 1200},
{B1800, 1800},
{B2400, 2400},
{B4800, 4800},
{B9600, 9600},
{B19200, 19200},
{B38400, 38400},
/* usual extensions */
#ifdef B57600
{B57600, 57600},
#endif
#ifdef B115200
{B115200, 115200},
#endif
#ifdef B230400
{B230400, 230400},
#endif
/* Linux extensions */
#ifdef B460800
{B460800, 460800},
#endif
#ifdef B500000
{B500000, 500000},
#endif
#ifdef B576000
{B576000, 576000},
#endif
#ifdef B921600
{B921600, 921600},
#endif
#ifdef B1000000
{B1000000, 1000000},
#endif
#ifdef B1152000
{B1152000, 1152000},
#endif
#ifdef B1500000
{B1500000, 1500000},
#endif
#ifdef B2000000
{B2000000, 2000000},
#endif
#ifdef B2500000
{B2500000, 2500000},
#endif
#ifdef B3000000
{B3000000, 3000000},
#endif
#ifdef B3500000
{B3500000, 3500000},
#endif
#ifdef B4000000
{B4000000, 4000000},
#endif
/* MacOS extensions */
#ifdef B7200
{B7200, 7200},
#endif
#ifdef B14400
{B14400, 14400},
#endif
#ifdef B28800
{B28800, 28800},
#endif
#ifdef B76800
{B76800, 76800},
#endif
/* Cygwin extensions (in addition to the Linux ones) */
#ifdef B128000
{B128000, 128000},
#endif
#ifdef B256000
{B256000, 256000},
#endif
};
#define NSPEEDS (sizeof(speedtable) / sizeof(speedtable[0]))
static void encode_terminal_status(value *dst)
{
long * pc;
int i;
for(pc = terminal_io_descr; *pc != End; dst++) {
switch(*pc++) {
case Bool:
{ int * src = (int *) (*pc++);
int msk = *pc++;
*dst = Val_bool(*src & msk);
break; }
case Enum:
{ int * src = (int *) (*pc++);
int ofs = *pc++;
int num = *pc++;
int msk = *pc++;
for (i = 0; i < num; i++) {
if ((*src & msk) == pc[i]) {
*dst = Val_int(i + ofs);
break;
}
}
pc += num;
break; }
case Speed:
{ int which = *pc++;
speed_t speed = 0;
*dst = Val_int(9600); /* in case no speed in speedtable matches */
switch (which) {
case Output:
speed = cfgetospeed(&terminal_status); break;
case Input:
speed = cfgetispeed(&terminal_status); break;
}
for (i = 0; i < NSPEEDS; i++) {
if (speed == speedtable[i].speed) {
*dst = Val_int(speedtable[i].baud);
break;
}
}
break; }
case Char:
{ int which = *pc++;
*dst = Val_int(terminal_status.c_cc[which]);
break; }
}
}
}
static void decode_terminal_status(value *src)
{
long * pc;
int i;
for (pc = terminal_io_descr; *pc != End; src++) {
switch(*pc++) {
case Bool:
{ int * dst = (int *) (*pc++);
int msk = *pc++;
if (Bool_val(*src))
*dst |= msk;
else
*dst &= ~msk;
break; }
case Enum:
{ int * dst = (int *) (*pc++);
int ofs = *pc++;
int num = *pc++;
int msk = *pc++;
i = Int_val(*src) - ofs;
if (i >= 0 && i < num) {
*dst = (*dst & ~msk) | pc[i];
} else {
unix_error(EINVAL, "tcsetattr", Nothing);
}
pc += num;
break; }
case Speed:
{ int which = *pc++;
int baud = Int_val(*src);
int res = 0;
for (i = 0; i < NSPEEDS; i++) {
if (baud == speedtable[i].baud) {
switch (which) {
case Output:
res = cfsetospeed(&terminal_status, speedtable[i].speed); break;
case Input:
res = cfsetispeed(&terminal_status, speedtable[i].speed); break;
}
if (res == -1) uerror("tcsetattr", Nothing);
goto ok;
}
}
unix_error(EINVAL, "tcsetattr", Nothing);
ok:
break; }
case Char:
{ int which = *pc++;
terminal_status.c_cc[which] = Int_val(*src);
break; }
}
}
}
CAMLprim value unix_tcgetattr(value fd)
{
value res;
if (tcgetattr(Int_val(fd), &terminal_status) == -1)
uerror("tcgetattr", Nothing);
res = caml_alloc_tuple(NFIELDS);
encode_terminal_status(&Field(res, 0));
return res;
}
static int when_flag_table[] = {
TCSANOW, TCSADRAIN, TCSAFLUSH
};
CAMLprim value unix_tcsetattr(value fd, value when, value arg)
{
if (tcgetattr(Int_val(fd), &terminal_status) == -1)
uerror("tcsetattr", Nothing);
decode_terminal_status(&Field(arg, 0));
if (tcsetattr(Int_val(fd),
when_flag_table[Int_val(when)],
&terminal_status) == -1)
uerror("tcsetattr", Nothing);
return Val_unit;
}
CAMLprim value unix_tcsendbreak(value fd, value delay)
{
if (tcsendbreak(Int_val(fd), Int_val(delay)) == -1)
uerror("tcsendbreak", Nothing);
return Val_unit;
}
#if defined(__ANDROID__)
CAMLprim value unix_tcdrain(value fd)
{ caml_invalid_argument("tcdrain not implemented"); }
#else
CAMLprim value unix_tcdrain(value fd)
{
if (tcdrain(Int_val(fd)) == -1) uerror("tcdrain", Nothing);
return Val_unit;
}
#endif
static int queue_flag_table[] = {
TCIFLUSH, TCOFLUSH, TCIOFLUSH
};
CAMLprim value unix_tcflush(value fd, value queue)
{
if (tcflush(Int_val(fd), queue_flag_table[Int_val(queue)]) == -1)
uerror("tcflush", Nothing);
return Val_unit;
}
static int action_flag_table[] = {
TCOOFF, TCOON, TCIOFF, TCION
};
CAMLprim value unix_tcflow(value fd, value action)
{
if (tcflow(Int_val(fd), action_flag_table[Int_val(action)]) == -1)
uerror("tcflow", Nothing);
return Val_unit;
}
#else
CAMLprim value unix_tcgetattr(value fd)
{ caml_invalid_argument("tcgetattr not implemented"); }
CAMLprim value unix_tcsetattr(value fd, value when, value arg)
{ caml_invalid_argument("tcsetattr not implemented"); }
CAMLprim value unix_tcsendbreak(value fd, value delay)
{ caml_invalid_argument("tcsendbreak not implemented"); }
CAMLprim value unix_tcdrain(value fd)
{ caml_invalid_argument("tcdrain not implemented"); }
CAMLprim value unix_tcflush(value fd, value queue)
{ caml_invalid_argument("tcflush not implemented"); }
CAMLprim value unix_tcflow(value fd, value action)
{ caml_invalid_argument("tcflow not implemented"); }
#endif
|
