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
|
#include <stdio.h>
#include <string.h>
#include "8b10b.h"
static const char * const rc_names[] = {
[K28_0] = "K.28.0",
[K28_1] = "K.28.1",
[K28_2] = "K.28.2",
[K28_3] = "K.28.3",
[K28_4] = "K.28.4",
[K28_5] = "K.28.5",
[K28_6] = "K.28.6",
[K28_7] = "K.28.7",
[K23_7] = "K.23.7",
[K27_7] = "K.27.7",
[K29_7] = "K.29.7",
[K30_7] = "K.30.7",
};
int hex_to_uint(const char *s, size_t len) {
if (len > 7)
return -2;
int acc = 0;
for (int i=0; i<len; i++) {
int digit = s[i];
if ('0' <= digit && digit <= '9')
digit -= '0';
else if ('a' <= digit && digit <= 'f')
digit -= 'a' - 0xa;
else if ('A' <= digit && digit <= 'F')
digit -= 'A' - 0xA;
else return -1;
acc = acc << 4 | digit;
}
return acc;
}
int main(void) {
struct state_8b10b_enc st;
xfr_8b10b_encode_reset(&st);
int c;
int comment = 0;
char parse_buf[32];
int parse_buf_pos = 0;
while ((c=fgetc(stdin)) != EOF) {
if (comment) {
if (c == '\n')
comment = 0;
printf("%c", c);
continue;
}
if (c == '#') {
comment = 1;
printf("%c", c);
continue;
}
if (c != '\r' && c != ' ' && c != '\t' && c != '\n') {
parse_buf[parse_buf_pos++] = (char)c;
if (parse_buf_pos == sizeof(parse_buf)) {
parse_buf[sizeof(parse_buf)-1] = '\0';
fprintf(stderr, "Parse error: Token \"%s[...]\" too long. Exiting.\n", parse_buf);
return 1;
}
continue;
}
if (parse_buf_pos == 0)
continue;
int data = 0;
for (int i=1; i<sizeof(rc_names)/sizeof(rc_names[0]); i++) {
if (!strncmp(rc_names[i], parse_buf, parse_buf_pos)) {
data = -i;
break;
}
}
if (!data) {
data = hex_to_uint(parse_buf, parse_buf_pos);
if (data < 0) {
parse_buf[parse_buf_pos] = '\0';
fprintf(stderr, "Invalid hex number: \"%s\"\n", parse_buf);
return 1;
}
}
parse_buf_pos = 0; /* reset for next token */
int encoded = xfr_8b10b_encode(&st, data);
if (encoded < 0) {
fprintf(stderr, "Invalid argument error encoding\n");
return 2;
}
for (int i=0; i<10; i++)
printf("%c", (encoded & (1<<(9-i))) ? '1' : '0');
printf("%c", c); /* print whitespace character */
}
}
|
