102 lines
2.9 KiB
Java
102 lines
2.9 KiB
Java
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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public class MPArray<T extends MPType> implements MPType<List<T>> {
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private List<T> array;
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public MPArray(List<T> array) {
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this.array = array;
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}
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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 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 String toString() {
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StringBuilder result = new StringBuilder();
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result.append('[');
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Iterator<T> iterator = array.iterator();
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while (iterator.hasNext()) {
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T item = iterator.next();
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result.append(item.toString());
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if (iterator.hasNext()) {
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result.append(", ");
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}
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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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