org.shoal.ha.cache.impl.util.ReplicationInputStream Maven / Gradle / Ivy
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package org.shoal.ha.cache.impl.util;
import java.io.ByteArrayInputStream;
/**
* @author Mahesh Kannan
*/
public class ReplicationInputStream
extends ByteArrayInputStream {
private int minPos = 0;
private int maxPos = -1;
public ReplicationInputStream(byte[] data) {
super(data);
maxPos = data.length - 1;
}
public ReplicationInputStream(byte[] data, int offset, int len) {
super(data, offset, len);
minPos = offset;
maxPos = offset + len - 1;
}
public int mark() {
super.mark(0);
return super.pos;
}
public void skipTo(int index) {
if (index < minPos || index > maxPos) {
throw new IllegalArgumentException("Illegal position (" + index + "). Valid values are from "
+ minPos + " to " + maxPos);
}
super.pos = index;
}
public final int readInt() {
//TODO Check bounds
int val = Utility.bytesToInt(buf, pos);
pos += 4;
return val;
}
public final long readLong() {
//TODO Check bounds
return ((long) readInt() << 32) | ((long) readInt() & 0xFFFFFFFFL);
}
public final String readLengthPrefixedString() {
String str = null;
int len = readInt();
if (len > 0) {
str = new String(buf, pos, len);
pos += len;
}
return str;
}
public final byte[] readLengthPrefixedBytes() {
byte[] data = null;
int len = readInt();
if (len > 0) {
data = new byte[len];
System.arraycopy(buf, pos, data, 0, len);
pos += len;
}
return data;
}
public boolean readBoolean() {
return buf[pos++] == 1;
}
public byte[] getBuffer() {
return buf;
}
}