79 lines
2.4 KiB
Java
79 lines
2.4 KiB
Java
package ch.dissem.msgpack.types;
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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.Objects;
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import static ch.dissem.msgpack.types.Utils.bytes;
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public class MPString implements MPType<String> {
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private String value;
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public MPString(String value) {
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this.value = value;
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}
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public String getValue() {
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return value;
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}
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public void pack(OutputStream out) throws IOException {
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int size = value.length();
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if (size < 16) {
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out.write(0b10100000 + size);
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} else if (size < 256) {
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out.write(0xD9);
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out.write((byte) size);
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} else if (size < 65536) {
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out.write(0xDA);
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out.write(ByteBuffer.allocate(2).putShort((short) size).array());
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} else {
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out.write(0xDB);
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out.write(ByteBuffer.allocate(4).putInt(size).array());
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}
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out.write(value.getBytes("UTF-8"));
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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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MPString mpString = (MPString) o;
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return Objects.equals(value, mpString.value);
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}
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@Override
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public int hashCode() {
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return Objects.hash(value);
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}
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@Override
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public String toString() {
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return '"' + value + '"'; // FIXME: escape value
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}
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public static class Unpacker implements MPType.Unpacker<MPString> {
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public boolean is(int firstByte) {
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return firstByte == 0xD9 || firstByte == 0xDA || firstByte == 0xDB || (firstByte & 0b11100000) == 0b10100000;
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}
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public MPString unpack(int firstByte, InputStream in) throws IOException {
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int size;
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if ((firstByte & 0b11100000) == 0b10100000) {
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size = firstByte & 0b00011111;
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} else if (firstByte == 0xD9) {
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size = in.read() << 8 | in.read();
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} else if (firstByte == 0xDA) {
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size = in.read() << 8 | in.read();
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} else if (firstByte == 0xDB) {
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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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return new MPString(new String(bytes(in, size).array(), "UTF-8"));
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}
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}
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}
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