146 lines
4.7 KiB
Kotlin
146 lines
4.7 KiB
Kotlin
/*
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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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/**
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* Representation of a msgpack encoded array. Uses a list to represent data internally, and implements the [List]
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* interface for your convenience.
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* @param <E> content type
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*/
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data class MPArray<E : MPType<*>>(override val value: MutableList<E> = mutableListOf()) : MPType<MutableList<E>>, MutableList<E> {
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@SafeVarargs
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constructor(vararg objects: E) : this(mutableListOf(*objects))
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@Throws(IOException::class)
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override fun pack(out: OutputStream) {
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val size = value.size
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when {
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size < 16 -> out.write(144 + size)
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size < 65536 -> {
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out.write(0xDC)
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out.write(ByteBuffer.allocate(2).putShort(size.toShort()).array())
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}
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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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}
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for (o in value) {
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o.pack(out)
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}
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}
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override val size: Int
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get() = value.size
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override fun isEmpty(): Boolean {
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return value.isEmpty()
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}
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override fun contains(element: E) = value.contains(element)
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override fun iterator() = value.iterator()
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override fun add(element: E) = value.add(element)
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override fun remove(element: E) = value.remove(element)
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override fun containsAll(elements: Collection<E>) = value.containsAll(elements)
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override fun addAll(elements: Collection<E>) = value.addAll(elements)
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override fun addAll(index: Int, elements: Collection<E>) = value.addAll(index, elements)
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override fun removeAll(elements: Collection<E>) = value.removeAll(elements)
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override fun retainAll(elements: Collection<E>) = value.retainAll(elements)
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override fun clear() = value.clear()
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override fun get(index: Int) = value[index]
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override operator fun set(index: Int, element: E) = value.set(index, element)
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override fun add(index: Int, element: E) = value.add(index, element)
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override fun removeAt(index: Int) = value.removeAt(index)
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override fun indexOf(element: E) = value.indexOf(element)
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override fun lastIndexOf(element: E) = value.lastIndexOf(element)
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override fun listIterator() = value.listIterator()
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override fun listIterator(index: Int) = value.listIterator(index)
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override fun subList(fromIndex: Int, toIndex: Int) = value.subList(fromIndex, toIndex)
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override fun toString() = toJson()
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override fun toJson() = toJson("")
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internal fun toJson(indent: String): String {
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val result = StringBuilder()
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result.append("[\n")
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val iterator = value.iterator()
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val indent2 = indent + " "
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while (iterator.hasNext()) {
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val 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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class Unpacker(private val reader: Reader) : MPType.Unpacker<MPArray<*>> {
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override fun doesUnpack(firstByte: Int): Boolean {
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return firstByte == 0xDC || firstByte == 0xDD || firstByte and 240 == 144
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}
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@Throws(IOException::class)
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override fun unpack(firstByte: Int, input: InputStream): MPArray<MPType<*>> {
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val size: Int = when {
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firstByte and 240 == 144 -> firstByte and 15
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firstByte == 0xDC -> input.read() shl 8 or input.read()
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firstByte == 0xDD -> input.read() shl 24 or (input.read() shl 16) or (input.read() shl 8) or input.read()
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else -> throw IllegalArgumentException(String.format("Unexpected first byte 0x%02x", firstByte))
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}
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val list = mutableListOf<MPType<*>>()
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for (i in 0 until size) {
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val value = reader.read(input)
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list.add(value)
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}
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return MPArray(list)
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}
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}
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}
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