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
|
package binarydist
import (
"io"
"io/ioutil"
"math/rand"
"os"
)
func mustOpen(path string) *os.File {
f, err := os.Open(path)
if err != nil {
panic(err)
}
return f
}
func mustReadAll(r io.Reader) []byte {
b, err := ioutil.ReadAll(r)
if err != nil {
panic(err)
}
return b
}
func fileCmp(a, b *os.File) int64 {
sa, err := a.Seek(0, 2)
if err != nil {
panic(err)
}
sb, err := b.Seek(0, 2)
if err != nil {
panic(err)
}
if sa != sb {
return sa
}
_, err = a.Seek(0, 0)
if err != nil {
panic(err)
}
_, err = b.Seek(0, 0)
if err != nil {
panic(err)
}
pa, err := ioutil.ReadAll(a)
if err != nil {
panic(err)
}
pb, err := ioutil.ReadAll(b)
if err != nil {
panic(err)
}
for i := range pa {
if pa[i] != pb[i] {
return int64(i)
}
}
return -1
}
func mustWriteRandFile(path string, size int, seed int64) *os.File {
p := make([]byte, size)
rand.Seed(seed)
_, err := rand.Read(p)
if err != nil {
panic(err)
}
f, err := os.Create(path)
if err != nil {
panic(err)
}
_, err = f.Write(p)
if err != nil {
panic(err)
}
_, err = f.Seek(0, 0)
if err != nil {
panic(err)
}
return f
}
|
