org.redkale.convert.ext.ByteBufferSimpledCoder Maven / Gradle / Ivy
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package org.redkale.convert.ext;
import java.nio.ByteBuffer;
import org.redkale.convert.Reader;
import org.redkale.convert.SimpledCoder;
import org.redkale.convert.Writer;
/**
* ByteBuffer 的SimpledCoder实现
*
*
* 详情见: https://redkale.org
*
* @author zhangjx
* @param Reader输入的子类型
* @param Writer输出的子类型
*/
public final class ByteBufferSimpledCoder extends SimpledCoder {
public static final ByteBufferSimpledCoder instance = new ByteBufferSimpledCoder();
@Override
public void convertTo(W out, ByteBuffer value) {
if (value == null) {
out.writeNull();
return;
}
if (out.writeArrayB(value.remaining(), ByteSimpledCoder.instance, value) < 0) {
boolean flag = false;
for (byte v : value.array()) {
if (flag) out.writeArrayMark();
out.writeByte(v);
flag = true;
}
}
out.writeArrayE();
}
@Override
public ByteBuffer convertFrom(R in) {
int len = in.readArrayB(null, ByteSimpledCoder.instance);
int contentLength = -1;
if (len == Reader.SIGN_NULL) return null;
if (len == Reader.SIGN_NOLENBUTBYTES) {
contentLength = in.readMemberContentLength(null, ByteSimpledCoder.instance);
len = Reader.SIGN_NOLENGTH;
}
if (len == Reader.SIGN_NOLENGTH) {
int size = 0;
byte[] data = new byte[8];
int startPosition = in.position();
while (in.hasNext(startPosition, contentLength)) {
if (size >= data.length) {
byte[] newdata = new byte[data.length + 4];
System.arraycopy(data, 0, newdata, 0, size);
data = newdata;
}
data[size++] = in.readByte();
}
in.readArrayE();
return ByteBuffer.wrap(data, 0, size);
} else {
byte[] values = new byte[len];
for (int i = 0; i < values.length; i++) {
values[i] = in.readByte();
}
in.readArrayE();
return ByteBuffer.wrap(values);
}
}
}