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
|
#include "stdinc.h"
#include "dat.h"
#include "fns.h"
char *host;
void
usage(void)
{
fprint(2, "usage: read [-h host] score [type]\n");
threadexitsall("usage");
}
int
parsescore(uchar *score, char *buf, int n)
{
int i, c;
memset(score, 0, VtScoreSize);
if(n != VtScoreSize*2){
werrstr("score wrong length %d", n);
return -1;
}
for(i=0; i<VtScoreSize*2; i++) {
if(buf[i] >= '0' && buf[i] <= '9')
c = buf[i] - '0';
else if(buf[i] >= 'a' && buf[i] <= 'f')
c = buf[i] - 'a' + 10;
else if(buf[i] >= 'A' && buf[i] <= 'F')
c = buf[i] - 'A' + 10;
else {
c = buf[i];
werrstr("bad score char %d '%c'", c, c);
return -1;
}
if((i & 1) == 0)
c <<= 4;
score[i>>1] |= c;
}
return 0;
}
void
threadmain(int argc, char *argv[])
{
int type, n;
uchar score[VtScoreSize];
uchar *buf;
VtConn *z;
ARGBEGIN{
case 'h':
host = EARGF(usage());
break;
default:
usage();
break;
}ARGEND
if(argc != 1 && argc != 2)
usage();
fmtinstall('V', vtscorefmt);
if(parsescore(score, argv[0], strlen(argv[0])) < 0)
sysfatal("could not parse score '%s': %r", argv[0]);
buf = vtmallocz(VtMaxLumpSize);
z = vtdial(host);
if(z == nil)
sysfatal("could not connect to server: %r");
if(vtconnect(z) < 0)
sysfatal("vtconnect: %r");
if(argc == 1){
n = -1;
for(type=0; type<VtMaxType; type++){
n = vtread(z, score, type, buf, VtMaxLumpSize);
if(n >= 0){
fprint(2, "venti/read%s%s %V %d\n", host ? " -h" : "", host ? host : "",
score, type);
break;
}
}
}else{
type = atoi(argv[1]);
n = vtread(z, score, type, buf, VtMaxLumpSize);
}
vthangup(z);
if(n < 0)
sysfatal("could not read block: %r");
if(write(1, buf, n) != n)
sysfatal("write: %r");
threadexitsall(0);
}
|