257 lines
6.3 KiB
Java
257 lines
6.3 KiB
Java
/*
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* Copyright 2017 Christian Basler
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ch.dissem.msgpack.types;
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import ch.dissem.msgpack.Reader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.ByteBuffer;
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import java.util.*;
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/**
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* Representation of a msgpack encoded array. Uses a list to represent data internally, and implements the {@link List}
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* interface for your convenience.
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*
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* @param <T>
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*/
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public class MPArray<T extends MPType> implements MPType<List<T>>, List<T> {
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private List<T> array;
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public MPArray() {
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this.array = new LinkedList<>();
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}
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public MPArray(List<T> array) {
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this.array = array;
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}
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@SafeVarargs
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public MPArray(T... objects) {
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this.array = Arrays.asList(objects);
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}
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public List<T> getValue() {
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return array;
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}
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public void pack(OutputStream out) throws IOException {
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int size = array.size();
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if (size < 16) {
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out.write(0b10010000 + size);
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} else if (size < 65536) {
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out.write(0xDC);
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out.write(ByteBuffer.allocate(2).putShort((short) size).array());
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} else {
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out.write(0xDD);
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out.write(ByteBuffer.allocate(4).putInt(size).array());
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}
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for (MPType o : array) {
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o.pack(out);
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}
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}
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@Override
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public int size() {
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return array.size();
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}
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@Override
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public boolean isEmpty() {
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return array.isEmpty();
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}
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@Override
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public boolean contains(Object o) {
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return array.contains(o);
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}
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@Override
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public Iterator<T> iterator() {
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return array.iterator();
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}
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@Override
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public Object[] toArray() {
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return array.toArray();
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}
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@Override
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@SuppressWarnings("SuspiciousToArrayCall")
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public <T1> T1[] toArray(T1[] t1s) {
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return array.toArray(t1s);
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}
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@Override
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public boolean add(T t) {
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return array.add(t);
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}
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@Override
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public boolean remove(Object o) {
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return array.remove(o);
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}
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@Override
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public boolean containsAll(Collection<?> collection) {
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return array.containsAll(collection);
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}
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@Override
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public boolean addAll(Collection<? extends T> collection) {
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return array.addAll(collection);
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}
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@Override
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public boolean addAll(int i, Collection<? extends T> collection) {
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return array.addAll(i, collection);
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}
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@Override
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public boolean removeAll(Collection<?> collection) {
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return array.removeAll(collection);
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}
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@Override
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public boolean retainAll(Collection<?> collection) {
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return array.retainAll(collection);
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}
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@Override
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public void clear() {
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array.clear();
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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MPArray<?> mpArray = (MPArray<?>) o;
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return Objects.equals(array, mpArray.array);
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}
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@Override
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public int hashCode() {
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return Objects.hash(array);
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}
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@Override
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public T get(int i) {
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return array.get(i);
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}
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@Override
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public T set(int i, T t) {
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return array.set(i, t);
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}
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@Override
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public void add(int i, T t) {
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array.add(i, t);
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}
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@Override
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public T remove(int i) {
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return array.remove(i);
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}
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@Override
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public int indexOf(Object o) {
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return array.indexOf(o);
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}
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@Override
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public int lastIndexOf(Object o) {
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return array.lastIndexOf(o);
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}
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@Override
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public ListIterator<T> listIterator() {
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return array.listIterator();
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}
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@Override
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public ListIterator<T> listIterator(int i) {
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return array.listIterator(i);
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}
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@Override
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public List<T> subList(int fromIndex, int toIndex) {
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return array.subList(fromIndex, toIndex);
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}
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@Override
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public String toString() {
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return toJson();
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}
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@Override
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public String toJson() {
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return toJson("");
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}
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String toJson(String indent) {
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StringBuilder result = new StringBuilder();
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result.append("[\n");
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Iterator<T> iterator = array.iterator();
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String indent2 = indent + " ";
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while (iterator.hasNext()) {
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T item = iterator.next();
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result.append(indent2);
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result.append(Utils.toJson(item, indent2));
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if (iterator.hasNext()) {
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result.append(',');
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}
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result.append('\n');
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}
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result.append("]");
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return result.toString();
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}
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public static class Unpacker implements MPType.Unpacker<MPArray> {
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private final Reader reader;
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public Unpacker(Reader reader) {
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this.reader = reader;
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}
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public boolean is(int firstByte) {
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return firstByte == 0xDC || firstByte == 0xDD || (firstByte & 0b11110000) == 0b10010000;
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}
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public MPArray<MPType<?>> unpack(int firstByte, InputStream in) throws IOException {
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int size;
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if ((firstByte & 0b11110000) == 0b10010000) {
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size = firstByte & 0b00001111;
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} else if (firstByte == 0xDC) {
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size = in.read() << 8 | in.read();
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} else if (firstByte == 0xDD) {
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size = in.read() << 24 | in.read() << 16 | in.read() << 8 | in.read();
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} else {
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throw new IllegalArgumentException(String.format("Unexpected first byte 0x%02x", firstByte));
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}
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List<MPType<?>> list = new LinkedList<>();
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for (int i = 0; i < size; i++) {
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MPType value = reader.read(in);
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list.add(value);
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}
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return new MPArray<>(list);
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}
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}
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}
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