blob: 8e3c85a8fa8a73e867af56167d3045f46f8efbbd (
plain) (
blame)
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
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security;
import java.nio.charset.StandardCharsets;
import java.util.HexFormat;
/**
* A small collection of utils for working on arrays of bytes.
*
* @author vekterli
*/
public class ArrayUtils {
/**
* Returns a new byte array that is the concatenation of all input byte arrays in input order.
*
* E.g. <code>concat("A", "BC", "DE", "F") => "ABCDEF"</code>
*/
public static byte[] concat(byte[]... bufs) {
int len = 0;
for (byte[] b : bufs) {
len += b.length;
}
byte[] ret = new byte[len];
int offset = 0;
for (byte[] b : bufs) {
System.arraycopy(b, 0, ret, offset, b.length);
offset += b.length;
}
return ret;
}
public static byte[] unhex(String hexStr) {
return HexFormat.of().parseHex(hexStr);
}
public static String hex(byte[] bytes) {
return HexFormat.of().formatHex(bytes);
}
public static byte[] toUtf8Bytes(String str) {
return str.getBytes(StandardCharsets.UTF_8);
}
public static String fromUtf8Bytes(byte[] bytes) {
return new String(bytes, StandardCharsets.UTF_8);
}
}
|
