/
bytesutil.go
255 lines (213 loc) · 6.94 KB
/
bytesutil.go
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
package misc
func Uint16_Big(b []byte) uint16 {
return uint16(b[1]) | uint16(b[0])<<8
}
func Uint16_Little(b []byte) uint16 {
return uint16(b[0]) | uint16(b[1])<<8
}
func Uint24_Big(b []byte) uint32 {
return uint32(b[2]) | uint32(b[1])<<8 | uint32(b[0])<<16
}
func Uint24_Little(b []byte) uint32 {
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16
}
func Uint32_Big(b []byte) uint32 {
return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
}
func Uint32_Little(b []byte) uint32 {
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
}
func Uint64_Big(b []byte) uint64 {
return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
}
func Uint64_Little(b []byte) uint64 {
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
}
func PutUint16_Little(b []byte, v uint16) {
b[0] = byte(v)
b[1] = byte(v >> 8)
}
func PutUint16_Big(b []byte, v uint16) {
b[0] = byte(v >> 8)
b[1] = byte(v)
}
func PutUint24_Little(b []byte, v uint32) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
}
func PutUint24_Big(b []byte, v uint32) {
b[0] = byte(v >> 16)
b[1] = byte(v >> 8)
b[2] = byte(v)
}
func PutUint32_Little(b []byte, v uint32) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
b[3] = byte(v >> 24)
}
func PutUint32_Big(b []byte, v uint32) {
b[0] = byte(v >> 24)
b[1] = byte(v >> 16)
b[2] = byte(v >> 8)
b[3] = byte(v)
}
func PutUint64_Little(b []byte, v uint64) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
b[3] = byte(v >> 24)
b[4] = byte(v >> 32)
b[5] = byte(v >> 40)
b[6] = byte(v >> 48)
b[7] = byte(v >> 56)
}
func PutUint64_Big(b []byte, v uint64) {
b[0] = byte(v >> 56)
b[1] = byte(v >> 48)
b[2] = byte(v >> 40)
b[3] = byte(v >> 32)
b[4] = byte(v >> 24)
b[5] = byte(v >> 16)
b[6] = byte(v >> 8)
b[7] = byte(v)
}
func Int64ToBytes(n int64) [8]byte {
b := [8]byte{}
b[7] = byte(n & 0xff)
b[6] = byte(n >> 8 & 0xff)
b[5] = byte(n >> 16 & 0xff)
b[4] = byte(n >> 24 & 0xff)
b[3] = byte(n >> 32 & 0xff)
b[2] = byte(n >> 40 & 0xff)
b[1] = byte(n >> 48 & 0xff)
b[0] = byte(n >> 56 & 0xff)
return b
}
func Int64ToBytesA(n int64, array []byte, offset int) {
array[7+offset] = byte(n & 0xff)
array[6+offset] = byte(n >> 8 & 0xff)
array[5+offset] = byte(n >> 16 & 0xff)
array[4+offset] = byte(n >> 24 & 0xff)
array[3+offset] = byte(n >> 32 & 0xff)
array[2+offset] = byte(n >> 40 & 0xff)
array[1+offset] = byte(n >> 48 & 0xff)
array[0+offset] = byte(n >> 56 & 0xff)
}
func BytesToInt64(array []byte) int64 {
return ((int64(array[0]) & 0xff) << 56) + ((int64(array[1]) & 0xff) << 48) + ((int64(array[2]) & 0xff) << 40) + ((int64(array[3]) & 0xff) << 32) + ((int64(array[4]) & 0xff) << 24) + ((int64(array[5]) & 0xff) << 16) + ((int64(array[6]) & 0xff) << 8) + ((int64(array[7]) & 0xff) << 0)
}
func BytesToInt64A(array []byte, offset int) int64 {
return ((int64(array[0+offset]) & 0xff) << 56) + ((int64(array[1+offset]) & 0xff) << 48) + ((int64(array[2+offset]) & 0xff) << 40) + ((int64(array[3+offset]) & 0xff) << 32) + ((int64(array[4+offset]) & 0xff) << 24) + ((int64(array[5+offset]) & 0xff) << 16) + ((int64(array[6+offset]) & 0xff) << 8) + ((int64(array[7+offset]) & 0xff) << 0)
}
func Int32ToBytes(n int32) [4]byte {
b := [4]byte{}
b[3] = (byte)(n & 0xff)
b[2] = (byte)(n >> 8 & 0xff)
b[1] = (byte)(n >> 16 & 0xff)
b[0] = (byte)(n >> 24 & 0xff)
return b
}
func Int32ToBytesA(n int32, array []byte, offset int) {
array[3+offset] = (byte)(n & 0xff)
array[2+offset] = (byte)(n >> 8 & 0xff)
array[1+offset] = (byte)(n >> 16 & 0xff)
array[offset] = (byte)(n >> 24 & 0xff)
}
func BytesToInt32(b []byte) int32 {
return int32(b[3]&0xff) + int32((b[2]&0xff)<<8) + int32((b[1]&0xff)<<16) + int32((b[0]&0xff)<<24)
}
func BytesToInt32A(b []byte, offset int) int32 {
return int32(b[offset+3]&0xff) + int32((b[offset+2]&0xff))<<8 + int32((b[offset+1]&0xff)<<16) + int32((b[offset]&0xff)<<24)
}
func Uint32ToBytes(n uint32) [4]byte {
b := [4]byte{}
b[3] = (byte)(n & 0xff)
b[2] = (byte)(n >> 8 & 0xff)
b[1] = (byte)(n >> 16 & 0xff)
b[0] = (byte)(n >> 24 & 0xff)
return b
}
func Uint32ToBytesA(n uint32, array []byte, offset int) {
array[3+offset] = (byte)(n)
array[2+offset] = (byte)(n >> 8 & 0xff)
array[1+offset] = (byte)(n >> 16 & 0xff)
array[offset] = (byte)(n >> 24 & 0xff)
}
func BytesToUint32(array []byte) uint32 {
return ((uint32)(array[3] & 0xff)) + ((uint32)(array[2]&0xff))<<8 + ((uint32)(array[1]&0xff))<<16 + ((uint32)(array[0]&0xff))<<24
}
func BytesToUint32A(array []byte, offset int) uint32 {
return ((uint32)(array[offset+3] & 0xff)) + ((uint32)(array[offset+2]&0xff))<<8 + ((uint32)(array[offset+1]&0xff))<<16 + ((uint32)(array[offset]&0xff))<<24
}
func Int24ToBytes(n int32) [3]byte {
b := [3]byte{}
b[2] = (byte)(n & 0xff)
b[1] = (byte)(n >> 8 & 0xff)
b[0] = (byte)(n >> 16 & 0xff)
return b
}
func Int24ToBytesA(n int32, array []byte, offset int) {
array[2+offset] = (byte)(n)
array[1+offset] = (byte)(n >> 8 & 0xff)
array[offset] = (byte)(n >> 16 & 0xff)
}
func BytesToInt24(b []byte) int32 {
return int32(b[2]&0xff) + int32((b[1]&0xff)<<8) + int32((b[0]&0xff)<<16)
}
func BytesToInt24A(b []byte, offset int) int32 {
return int32(b[offset+2]&0xff) + int32((b[offset+1]&0xff))<<8 + int32((b[offset]&0xff)<<16)
}
func Uint24ToBytes(n uint32) [3]byte {
b := [3]byte{}
b[2] = (byte)(n & 0xff)
b[1] = (byte)(n >> 8 & 0xff)
b[0] = (byte)(n >> 16 & 0xff)
return b
}
func Uint24ToBytesA(n uint32, array []byte, offset int) {
array[2+offset] = (byte)(n)
array[1+offset] = (byte)(n >> 8 & 0xff)
array[offset] = (byte)(n >> 16 & 0xff)
}
func BytesToUint24(array []byte) uint32 {
return ((uint32)(array[2] & 0xff)) + ((uint32)(array[1]&0xff))<<8 + ((uint32)(array[0]&0xff))<<16
}
func BytesToUint24A(array []byte, offset int) uint32 {
return ((uint32)(array[offset+2] & 0xff)) + ((uint32)(array[offset+1]&0xff))<<8 + ((uint32)(array[offset]&0xff))<<16
}
func Int16ToBytes(n int16) [2]byte {
b := [2]byte{}
b[1] = (byte)(n & 0xff)
b[0] = (byte)(n >> 8 & 0xff)
return b
}
func Int16ToBytesA(n int16, array []byte, offset int) {
array[1+offset] = (byte)(n)
array[offset] = (byte)(n >> 8 & 0xff)
}
func BytesToInt16(b []byte) int16 {
return int16(b[1]&0xff) + int16((b[0]&0xff)<<8)
}
func BytesToInt16A(b []byte, offset int) int16 {
return int16(b[offset+1]&0xff) + int16((b[offset]&0xff))<<8
}
func Uint16ToBytes(n uint16) [2]byte {
b := [2]byte{}
b[1] = (byte)(n & 0xff)
b[0] = (byte)(n >> 8 & 0xff)
return b
}
func Uint16ToBytesA(n uint16, array []byte, offset int) {
array[1+offset] = (byte)(n)
array[offset] = (byte)(n >> 8 & 0xff)
}
func BytesToUint16(array []byte) uint16 {
return ((uint16)(array[1] & 0xff)) + ((uint16)(array[0]&0xff))<<8
}
func BytesToUint16A(array []byte, offset int) uint16 {
return ((uint16)(array[offset+1] & 0xff)) + ((uint16)(array[offset]&0xff))<<8
}