forked from tronprotocol/java-tron
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathByteArray.java
More file actions
123 lines (109 loc) · 3.63 KB
/
ByteArray.java
File metadata and controls
123 lines (109 loc) · 3.63 KB
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
/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.tron.common.utils;
import com.google.common.primitives.Ints;
import com.google.common.primitives.Longs;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.math.BigInteger;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.spongycastle.util.encoders.Hex;
@Slf4j
public class ByteArray {
public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
public static String toHexString(byte[] data) {
return data == null ? "" : Hex.toHexString(data);
}
/**
* get bytes data from hex string data.
*/
public static byte[] fromHexString(String data) {
if (data == null) {
return EMPTY_BYTE_ARRAY;
}
if (data.startsWith("0x")) {
data = data.substring(2);
}
if (data.length() % 2 != 0) {
data = "0" + data;
}
return Hex.decode(data);
}
/**
* get long data from bytes data.
*/
public static long toLong(byte[] b) {
return ArrayUtils.isEmpty(b) ? 0 : new BigInteger(1, b).longValue();
}
/**
* get int data from bytes data.
*/
public static int toInt(byte[] b) {
return ArrayUtils.isEmpty(b) ? 0 : new BigInteger(1, b).intValue();
}
/**
* get bytes data from string data.
*/
public static byte[] fromString(String s) {
return StringUtils.isBlank(s) ? null : s.getBytes();
}
/**
* get string data from bytes data.
*/
public static String toStr(byte[] b) {
return ArrayUtils.isEmpty(b) ? null : new String(b);
}
public static byte[] fromLong(long val) {
return Longs.toByteArray(val);
}
public static byte[] fromInt(int val) {
return Ints.toByteArray(val);
}
/**
* get bytes data from object data.
*/
public static byte[] fromObject(Object obj) {
byte[] bytes = null;
try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream)) {
objectOutputStream.writeObject(obj);
objectOutputStream.flush();
bytes = byteArrayOutputStream.toByteArray();
} catch (IOException e) {
logger.error("objectToByteArray failed: " + e.getMessage(), e);
}
return bytes;
}
/**
* Generate a subarray of a given byte array.
*
* @param input the input byte array
* @param start the start index
* @param end the end index
* @return a subarray of <tt>input</tt>, ranging from <tt>start</tt> (inclusively) to <tt>end</tt>
* (exclusively)
*/
public static byte[] subArray(byte[] input, int start, int end) {
byte[] result = new byte[end - start];
System.arraycopy(input, start, result, 0, end - start);
return result;
}
}