Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/**
*
*/
package io.pkts.buffer;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
/**
* Represents an empty buffer.
*
* @author [email protected]
*/
public class EmptyBuffer implements Buffer {
private static final String THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT = "This is an empty buffer. Cant write to it";
private static final String THIS_BUFFER_IS_EMPTY = "This buffer is empty";
private static final String NOT_ENOUGH_READABLE_BYTES = "Not enough readable bytes";
private static final byte[] EMPTY = new byte[0];
/**
*
*/
protected EmptyBuffer() {
// only Buffers should create this one
}
/**
* {@inheritDoc}
*/
@Override
public Buffer readBytes(final int length) throws IndexOutOfBoundsException, IOException {
if (length == 0) {
return this;
}
throw new IndexOutOfBoundsException(NOT_ENOUGH_READABLE_BYTES);
}
/**
* {@inheritDoc}
*/
@Override
public Buffer readLine() throws IOException {
throw new IndexOutOfBoundsException(NOT_ENOUGH_READABLE_BYTES);
}
@Override
public Buffer readUntilSingleCRLF() throws IOException {
throw new IndexOutOfBoundsException("Not enough readable bytes");
}
@Override
public Buffer readUntilDoubleCRLF() throws IOException {
throw new IndexOutOfBoundsException(NOT_ENOUGH_READABLE_BYTES);
}
/**
* {@inheritDoc}
*/
@Override
public int getReadableBytes() {
return 0;
}
/**
* {@inheritDoc}
*/
@Override
public boolean hasReadableBytes() {
return false;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isEmpty() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public byte[] getArray() {
return EMPTY;
}
/**
* {@inheritDoc}
*/
@Override
public Buffer readUntil(final byte b) throws IOException, ByteNotFoundException {
throw new ByteNotFoundException(b);
}
/**
* {@inheritDoc}
*/
@Override
public Buffer slice(final int start, final int stop) {
if (start != 0 && stop != 0) {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
return this;
}
/**
* {@inheritDoc}
*/
@Override
public Buffer slice(final int stop) {
if (stop != 0) {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
return this;
}
/**
* {@inheritDoc}
*/
@Override
public Buffer slice() {
return this;
}
@Override
public int getLowerBoundary() {
return 0;
}
@Override
public int getUpperBoundary() {
return 0;
}
/**
* {@inheritDoc}
*/
@Override
public int getReaderIndex() {
return 0;
}
/**
* {@inheritDoc}
*/
@Override
public void markReaderIndex() {
// left empty intentionally since there is nothing to do
}
/**
* {@inheritDoc}
*/
@Override
public void resetReaderIndex() {
// left empty intentionally since there is nothing to do
}
/**
* {@inheritDoc}
*/
@Override
public int capacity() {
return 0;
}
/**
* {@inheritDoc}
*/
@Override
public byte getByte(final int index) throws IndexOutOfBoundsException, IOException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public byte readByte() throws IndexOutOfBoundsException, IOException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public long readUnsignedInt() throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public int readInt() throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public int getInt(final int index) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public short getShort(final int index) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public int readUnsignedShort() throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public int getUnsignedShort(final int index) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public short readShort() throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public short readUnsignedByte() throws IndexOutOfBoundsException, IOException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public short getUnsignedByte(final int index) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* {@inheritDoc}
*/
@Override
public String dumpAsHex() {
return "";
}
/**
* {@inheritDoc}
*/
@Override
public void setByte(final int index, final byte value) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
@Override
public void setUnsignedByte(final int index, final short value) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
@Override
public void setUnsignedShort(final int index, final int value) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
/**
* Really nothing to clone so just return this since this
* {@link EmptyBuffer} is by definition immutable.
*
* {@inheritDoc}
*/
@Override
public Buffer clone() {
return this;
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return "";
}
@Override
public byte peekByte() throws IndexOutOfBoundsException, IOException {
throw new IndexOutOfBoundsException(NOT_ENOUGH_READABLE_BYTES);
}
@Override
public Buffer readUntil(final int maxBytes, final byte... bytes) throws IOException, ByteNotFoundException {
if (bytes.length == 0) {
return this;
}
throw new ByteNotFoundException(bytes[0]);
}
@Override
public Buffer readUntilSafe(final int maxBytes, final byte... bytes) throws IOException, IllegalArgumentException {
if (bytes.length == 0) {
return this;
}
throw new ByteNotFoundException(bytes[0]);
}
@Override
public int indexOf(final int maxBytes, final byte... bytes) throws IOException, ByteNotFoundException,
IllegalArgumentException {
return -1;
}
@Override
public int indexOf(final byte b) throws IOException, ByteNotFoundException, IllegalArgumentException {
return -1;
}
@Override
public void setReaderIndex(final int index) {
// ignored
}
@Override
public void write(final byte b) throws IndexOutOfBoundsException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public void write(final byte[] bytes) throws IndexOutOfBoundsException, WriteNotSupportedException {
throw new WriteNotSupportedException("This is an empty buffer. Cant write to it");
}
@Override
public void write(final String s) throws IndexOutOfBoundsException, WriteNotSupportedException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public void write(final String s, final String charset) throws IndexOutOfBoundsException,
WriteNotSupportedException, UnsupportedEncodingException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public void write(final int value) throws IndexOutOfBoundsException, WriteNotSupportedException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public void write(final long value) throws IndexOutOfBoundsException, WriteNotSupportedException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public void writeAsString(final int value) throws IndexOutOfBoundsException, WriteNotSupportedException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public void writeAsString(final long value) throws IndexOutOfBoundsException, WriteNotSupportedException {
throw new WriteNotSupportedException(THIS_IS_AN_EMPTY_BUFFER_CANT_WRITE_TO_IT);
}
@Override
public int getWriterIndex() {
return -1;
}
@Override
public void setWriterIndex(final int index) {
throw new WriteNotSupportedException("This is an empty buffer. Cant write to it");
}
@Override
public int getWritableBytes() {
return 0;
}
@Override
public boolean hasWritableBytes() {
return false;
}
@Override
public void getBytes(final Buffer dst) {
// since it is empty, there are no bytes to get
// so therefore leaving empty.
}
@Override
public void getBytes(final byte[] dst) throws IndexOutOfBoundsException {
// since it is empty, there are no bytes to get
// so therefore leaving empty.
}
@Override
public void getBytes(final int index, final Buffer dst) throws IndexOutOfBoundsException {
// since it is empty, there are no bytes to get
// so therefore leaving empty.
}
@Override
public boolean hasWriteSupport() {
return false;
}
@Override
public void setInt(final int index, final int value) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException("Sorry, this buffer is empty");
}
@Override
public int parseToInt() throws NumberFormatException {
throw new NumberFormatException("This buffer is empty and therefore cannot be parsed as an integer");
}
@Override
public int parseToInt(final int radix) {
throw new NumberFormatException("This buffer is empty and therefore cannot be parsed as an integer");
}
@Override
public void setUnsignedInt(final int index, final long value) throws IndexOutOfBoundsException {
throw new IndexOutOfBoundsException(THIS_BUFFER_IS_EMPTY);
}
@Override
public boolean equalsIgnoreCase(final Object other) {
if (this == other) {
return true;
}
try {
return ((Buffer) other).isEmpty();
} catch (final NullPointerException | ClassCastException e) {
return false;
}
}
}
