com.godmonth.util.ByteArrayHelper Maven / Gradle / Ivy
package com.godmonth.util;
import org.apache.commons.lang3.ArrayUtils;
public class ByteArrayHelper {
public static void fill(byte[] target, int offset, byte[] source) {
if (source != null) {
for (int i = 0; i < source.length; i++) {
target[offset + i] = source[i];
}
}
}
public static byte[] trim(byte[] data, int offset, int length) {
if (offset != 0 || length != data.length) {
return ArrayUtils.subarray(data, offset, length);
} else {
return data;
}
}
public static byte[] join(byte[][] content) {
byte[] result = content[0];
for (int i = 1; i < content.length; i++) {
result = ArrayUtils.addAll(result, content[i]);
}
return result;
}
public static byte[][] split(byte[] data, int mtu) {
int times = data.length / mtu;
if (data.length % mtu > 0) {
times++;
}
byte[][] result = new byte[times][];
int startIndex = 0;
int count = 0;
do {
result[count++] = ArrayUtils.subarray(data, startIndex, Math.min(
data.length, startIndex + mtu));
startIndex += mtu;
} while (startIndex < data.length);
return result;
}
}