Moving to io-2

build.gradle.kts

@@ -1,9 +1,9 @@
 import scientifik.ScientifikExtension
 
 plugins {
-    id("scientifik.mpp") version "0.2.4" apply false
+    id("scientifik.mpp") version "0.2.5" apply false
-    id("scientifik.jvm") version "0.2.4" apply false
+    id("scientifik.jvm") version "0.2.5" apply false
-    id("scientifik.publish") version "0.2.4" apply false
+    id("scientifik.publish") version "0.2.5" apply false
 }
 
 val dataforgeVersion by extra("0.1.5-dev-3")
@@ -14,6 +14,10 @@ val githubProject by extra("dataforge-core")
 allprojects {
     group = "hep.dataforge"
     version = dataforgeVersion
+
+    repositories {
+        mavenLocal()
+    }
 }
 
 subprojects {

dataforge-io/build.gradle.kts

@@ -4,27 +4,30 @@ plugins {
 
 description = "IO module"
 
-scientifik{
+scientifik {
     withSerialization()
-    withIO()
+    //withIO()
 }
 
+val ioVersion by rootProject.extra("0.2.0-npm-dev-2")
 
 kotlin {
     sourceSets {
-        commonMain{
+        commonMain {
             dependencies {
                 api(project(":dataforge-context"))
+                api("org.jetbrains.kotlinx:kotlinx-io:$ioVersion")
+                //api("org.jetbrains.kotlinx:kotlinx-io-metadata:$ioVersion")
             }
         }
-        jvmMain{
+        jvmMain {
             dependencies {
-
+                //api("org.jetbrains.kotlinx:kotlinx-io-jvm:$ioVersion")
             }
         }
-        jsMain{
+        jsMain {
-            dependencies{
+            dependencies {
-                api(npm("text-encoding"))
+                //api("org.jetbrains.kotlinx:kotlinx-io-js:$ioVersion")
             }
         }
     }

dataforge-io/dataforge-io-yaml/src/main/kotlin/hep/dataforge/io/yaml/FrontMatterEnvelopeFormat.kt

@@ -5,7 +5,8 @@ import hep.dataforge.io.*
 import hep.dataforge.meta.DFExperimental
 import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
-import kotlinx.io.core.*
+import kotlinx.io.Input
+import kotlinx.io.Output
 import kotlinx.serialization.toUtf8Bytes
 
 @DFExperimental
@@ -18,7 +19,7 @@ class FrontMatterEnvelopeFormat(
         var line: String = ""
         var offset = 0u
         do {
-            line = readUTF8Line() ?: error("Input does not contain front matter separator")
+            line = readUtf8Line() ?: error("Input does not contain front matter separator")
             offset += line.toUtf8Bytes().size.toUInt()
         } while (!line.startsWith(SEPARATOR))
 
@@ -28,7 +29,7 @@ class FrontMatterEnvelopeFormat(
 
         val metaBlock = buildPacket {
             do {
-                line = readUTF8Line() ?: error("Input does not contain closing front matter separator")
+                line = readUtf8Line() ?: error("Input does not contain closing front matter separator")
                 appendln(line)
                 offset += line.toUtf8Bytes().size.toUInt()
             } while (!line.startsWith(SEPARATOR))
@@ -40,7 +41,7 @@ class FrontMatterEnvelopeFormat(
     override fun Input.readObject(): Envelope {
         var line: String = ""
         do {
-            line = readUTF8Line() ?: error("Input does not contain front matter separator")
+            line = readUtf8Line() ?: error("Input does not contain front matter separator")
         } while (!line.startsWith(SEPARATOR))
 
         val readMetaFormat =
@@ -49,7 +50,7 @@ class FrontMatterEnvelopeFormat(
 
         val metaBlock = buildPacket {
             do {
-                appendln(readUTF8Line() ?: error("Input does not contain closing front matter separator"))
+                appendln(readUtf8Line() ?: error("Input does not contain closing front matter separator"))
             } while (!line.startsWith(SEPARATOR))
         }
         val meta = readMetaFormat.fromBytes(metaBlock)
@@ -76,7 +77,7 @@ class FrontMatterEnvelopeFormat(
         }
 
         override fun peekFormat(io: IOPlugin, input: Input): EnvelopeFormat? {
-            val line = input.readUTF8Line(3, 30)
+            val line = input.readUtf8Line(3, 30)
             return if (line != null && line.startsWith("---")) {
                 invoke()
             } else {

dataforge-io/dataforge-io-yaml/src/main/kotlin/hep/dataforge/io/yaml/YamlMetaFormat.kt

@@ -8,12 +8,10 @@ import hep.dataforge.meta.DFExperimental
 import hep.dataforge.meta.Meta
 import hep.dataforge.meta.toMap
 import hep.dataforge.meta.toMeta
-import hep.dataforge.names.Name
+import kotlinx.io.Input
-import hep.dataforge.names.plus
+import kotlinx.io.Output
-import kotlinx.io.core.Input
+import kotlinx.io.readUByte
-import kotlinx.io.core.Output
+import kotlinx.io.writeText
-import kotlinx.io.core.readUByte
-import kotlinx.io.core.writeText
 import org.yaml.snakeyaml.Yaml
 import java.io.InputStream
 
@@ -47,7 +45,7 @@ class YamlMetaFormat(val meta: Meta) : MetaFormat {
     companion object : MetaFormatFactory {
         override fun invoke(meta: Meta, context: Context): MetaFormat = YamlMetaFormat(meta)
 
-        override val name: Name = super.name + "yaml"
+        override val shortName = "yaml"
 
         override val key: Short = 0x594d //YM
 

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Binary.kt

@@ -1,94 +0,0 @@
-package hep.dataforge.io
-
-import kotlinx.io.core.*
-import kotlin.math.min
-
-/**
- * A source of binary data
- */
-interface Binary {
-    /**
-     * The size of binary in bytes. [ULong.MAX_VALUE] if size is not defined and input should be read until its end is reached
-     */
-    val size: ULong get() = ULong.MAX_VALUE
-
-    /**
-     * Read continuous [Input] from this binary stating from the beginning.
-     * The input is automatically closed on scope close.
-     * Some implementation may forbid this to be called twice. In this case second call will throw an exception.
-     */
-    fun <R> read(block: Input.() -> R): R
-
-    companion object {
-        val EMPTY = EmptyBinary
-    }
-}
-
-/**
- * A [Binary] with addition random access functionality. It by default allows multiple [read] operations.
- */
-@ExperimentalUnsignedTypes
-interface RandomAccessBinary : Binary {
-    /**
-     * Read at most [size] of bytes starting at [from] offset from the beginning of the binary.
-     * This method could be called multiple times simultaneously.
-     *
-     * If size
-     */
-    fun <R> read(from: UInt, size: UInt = UInt.MAX_VALUE, block: Input.() -> R): R
-
-    override fun <R> read(block: Input.() -> R): R = read(0.toUInt(), UInt.MAX_VALUE, block)
-}
-
-fun Binary.toBytes(): ByteArray = read {
-    readBytes()
-}
-
-fun Binary.contentToString(): String = read {
-    readText()
-}
-
-@ExperimentalUnsignedTypes
-fun RandomAccessBinary.readPacket(from: UInt, size: UInt): ByteReadPacket = read(from, size) {
-    buildPacket { copyTo(this) }
-}
-
-@ExperimentalUnsignedTypes
-object EmptyBinary : RandomAccessBinary {
-
-    override val size: ULong = 0u
-
-    override fun <R> read(from: UInt, size: UInt, block: Input.() -> R): R {
-        error("The binary is empty")
-    }
-}
-
-@ExperimentalUnsignedTypes
-inline class ArrayBinary(val array: ByteArray) : RandomAccessBinary {
-    override val size: ULong get() = array.size.toULong()
-
-    override fun <R> read(from: UInt, size: UInt, block: Input.() -> R): R {
-        val theSize = min(size, array.size.toUInt() - from)
-        return buildPacket {
-            writeFully(array, from.toInt(), theSize.toInt())
-        }.block()
-    }
-}
-
-fun ByteArray.asBinary() = ArrayBinary(this)
-
-/**
- * Read given binary as object using given format
- */
-fun <T : Any> Binary.readWith(format: IOFormat<T>): T = format.run {
-    read {
-        readObject()
-    }
-}
-
-//fun <T : Any> IOFormat<T>.writeBinary(obj: T): Binary {
-//    val packet = buildPacket {
-//        writeObject(obj)
-//    }
-//    return ArrayBinary(packet.readBytes())
-//}

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/BinaryMetaFormat.kt

@@ -3,16 +3,13 @@ package hep.dataforge.io
 import hep.dataforge.context.Context
 import hep.dataforge.descriptors.NodeDescriptor
 import hep.dataforge.meta.*
-import hep.dataforge.names.Name
-import hep.dataforge.names.plus
 import hep.dataforge.values.*
-import kotlinx.io.core.Input
+import kotlinx.io.*
-import kotlinx.io.core.Output
+import kotlinx.io.text.readUtf8String
-import kotlinx.io.core.readText
+import kotlinx.io.text.writeUtf8String
-import kotlinx.io.core.writeText
 
 object BinaryMetaFormat : MetaFormat, MetaFormatFactory {
-    override val name: Name = super.name + "bin"
+    override val shortName: String = "bin"
     override val key: Short = 0x4249//BI
 
     override fun invoke(meta: Meta, context: Context): MetaFormat = this
@@ -25,7 +22,7 @@ object BinaryMetaFormat : MetaFormat, MetaFormatFactory {
 
     private fun Output.writeString(str: String) {
         writeInt(str.length)
-        writeText(str)
+        writeUtf8String(str)
     }
 
     fun Output.writeValue(value: Value) {
@@ -93,7 +90,7 @@ object BinaryMetaFormat : MetaFormat, MetaFormatFactory {
 
     private fun Input.readString(): String {
         val length = readInt()
-        return readText(max = length)
+        return readUtf8String(length)
     }
 
     @Suppress("UNCHECKED_CAST")

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Envelope.kt

@@ -6,6 +6,7 @@ import hep.dataforge.meta.get
 import hep.dataforge.meta.string
 import hep.dataforge.names.asName
 import hep.dataforge.names.plus
+import kotlinx.io.Binary
 
 interface Envelope {
     val meta: Meta

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/EnvelopeBuilder.kt

@@ -1,9 +1,7 @@
 package hep.dataforge.io
 
 import hep.dataforge.meta.*
-import kotlinx.io.core.Output
+import kotlinx.io.*
-import kotlinx.io.core.buildPacket
-import kotlinx.io.core.readBytes
 
 class EnvelopeBuilder {
     private val metaBuilder = MetaBuilder()
@@ -27,10 +25,10 @@ class EnvelopeBuilder {
      * Construct a binary and transform it into byte-array based buffer
      */
     fun data(block: Output.() -> Unit) {
-        val bytes = buildPacket {
+        val bytes = buildBytes {
             block()
         }
-        data = ArrayBinary(bytes.readBytes())
+        data = ArrayBinary(bytes.toByteArray())
     }
 
     internal fun build() = SimpleEnvelope(metaBuilder.seal(), data)

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/EnvelopeFormat.kt

@@ -7,8 +7,8 @@ import hep.dataforge.meta.Meta
 import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.provider.Type
-import kotlinx.io.core.Input
+import kotlinx.io.Input
-import kotlinx.io.core.Output
+import kotlinx.io.Output
 import kotlin.reflect.KClass
 
 /**

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/EnvelopeParts.kt

@@ -24,16 +24,24 @@ object EnvelopeParts {
 /**
  * Append multiple serialized envelopes to the data block. Previous data is erased if it was present
  */
-fun EnvelopeBuilder.multipart(format: EnvelopeFormatFactory, envelopes: Collection<Envelope>) {
+@DFExperimental
+fun EnvelopeBuilder.multipart(
+    envelopes: Collection<Envelope>,
+    format: EnvelopeFormatFactory,
+    formatMeta: Meta = EmptyMeta
+) {
     dataType = MULTIPART_DATA_TYPE
     meta {
         SIZE_KEY put envelopes.size
         FORMAT_NAME_KEY put format.name.toString()
+        if (!formatMeta.isEmpty()) {
+            FORMAT_META_KEY put formatMeta
+        }
     }
     data {
-        format.run {
+        format(formatMeta).run {
             envelopes.forEach {
-                writeObject(it)
+                writeEnvelope(it)
             }
         }
     }
@@ -43,18 +51,25 @@ fun EnvelopeBuilder.multipart(format: EnvelopeFormatFactory, envelopes: Collecti
  * Create a multipart partition in the envelope adding additional name-index mapping in meta
  */
 @DFExperimental
-fun EnvelopeBuilder.multipart(format: EnvelopeFormatFactory, envelopes: Map<String, Envelope>) {
+fun EnvelopeBuilder.multipart(
+    envelopes: Map<String, Envelope>,
+    format: EnvelopeFormatFactory,
+    formatMeta: Meta = EmptyMeta
+) {
     dataType = MULTIPART_DATA_TYPE
     meta {
         SIZE_KEY put envelopes.size
         FORMAT_NAME_KEY put format.name.toString()
+        if (!formatMeta.isEmpty()) {
+            FORMAT_META_KEY put formatMeta
+        }
     }
     data {
         format.run {
             var counter = 0
-            envelopes.forEach {(key, envelope)->
+            envelopes.forEach { (key, envelope) ->
                 writeObject(envelope)
-                meta{
+                meta {
                     append(INDEX_KEY, buildMeta {
                         "key" put key
                         "index" put counter
@@ -66,14 +81,17 @@ fun EnvelopeBuilder.multipart(format: EnvelopeFormatFactory, envelopes: Map<Stri
     }
 }
 
+@DFExperimental
 fun EnvelopeBuilder.multipart(
     formatFactory: EnvelopeFormatFactory,
+    formatMeta: Meta = EmptyMeta,
     builder: suspend SequenceScope<Envelope>.() -> Unit
-) = multipart(formatFactory, sequence(builder).toList())
+) = multipart(sequence(builder).toList(), formatFactory, formatMeta)
 
 /**
  * If given envelope supports multipart data, return a sequence of those parts (could be empty). Otherwise return null.
  */
+@DFExperimental
 fun Envelope.parts(io: IOPlugin = Global.plugins.fetch(IOPlugin)): Sequence<Envelope>? {
     return when (dataType) {
         MULTIPART_DATA_TYPE -> {

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/IOFormat.kt

@@ -10,12 +10,9 @@ import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.provider.Type
 import hep.dataforge.values.Value
-import kotlinx.io.core.*
+import kotlinx.io.*
+import kotlinx.io.buffer.Buffer
 import kotlinx.io.pool.ObjectPool
-import kotlinx.serialization.ImplicitReflectionSerializer
-import kotlinx.serialization.KSerializer
-import kotlinx.serialization.cbor.Cbor
-import kotlinx.serialization.serializer
 import kotlin.reflect.KClass
 
 /**
@@ -49,7 +46,7 @@ class ListIOFormat<T : Any>(val format: IOFormat<T>) : IOFormat<List<T>> {
 
 val <T : Any> IOFormat<T>.list get() = ListIOFormat(this)
 
-fun ObjectPool<IoBuffer>.fill(block: IoBuffer.() -> Unit): IoBuffer {
+fun ObjectPool<Buffer>.fill(block: Buffer.() -> Unit): Buffer {
     val buffer = borrow()
     return try {
         buffer.apply(block)
@@ -71,19 +68,11 @@ interface IOFormatFactory<T : Any> : Factory<IOFormat<T>>, Named {
     }
 }
 
-@Deprecated("To be removed in io-2")
+fun <T : Any> IOFormat<T>.writeBytes(obj: T): Bytes = buildBytes { writeObject(obj) }
-inline fun buildPacketWithoutPool(headerSizeHint: Int = 0, block: BytePacketBuilder.() -> Unit): ByteReadPacket {
-    val builder = BytePacketBuilder(headerSizeHint, IoBuffer.NoPool)
-    block(builder)
-    return builder.build()
-}
 
-fun <T : Any> IOFormat<T>.writePacket(obj: T): ByteReadPacket = buildPacket { writeObject(obj) }
 
-@Deprecated("Not to be used outside tests due to double buffer write")
+fun <T : Any> IOFormat<T>.writeByteArray(obj: T): ByteArray = buildBytes { writeObject(obj) }.toByteArray()
-fun <T : Any> IOFormat<T>.writeBytes(obj: T): ByteArray = buildPacket { writeObject(obj) }.readBytes()
+fun <T : Any> IOFormat<T>.readByteArray(array: ByteArray): T = array.asBinary().read { readObject() }
-@Deprecated("Not to be used outside tests due to double buffer write")
-fun <T : Any> IOFormat<T>.readBytes(array: ByteArray): T = buildPacket { writeFully(array) }.readObject()
 
 object DoubleIOFormat : IOFormat<Double>, IOFormatFactory<Double> {
     override fun invoke(meta: Meta, context: Context): IOFormat<Double> = this
@@ -117,25 +106,10 @@ object ValueIOFormat : IOFormat<Value>, IOFormatFactory<Value> {
 }
 
 /**
- * Experimental
+ * Read given binary as object using given format
  */
-@ImplicitReflectionSerializer
+fun <T : Any> Binary.readWith(format: IOFormat<T>): T = format.run {
-class SerializerIOFormat<T : Any>(
+    read {
-    type: KClass<T>,
+        readObject()
-    val serializer: KSerializer<T> = type.serializer()
-) : IOFormat<T> {
-
-    //override val name: Name = type.simpleName?.toName() ?: EmptyName
-
-
-    override fun Output.writeObject(obj: T) {
-        val bytes = Cbor.plain.dump(serializer, obj)
-        writeFully(bytes)
-    }
-
-    override fun Input.readObject(): T {
-        //FIXME reads the whole input
-        val bytes = readBytes()
-        return Cbor.plain.load(serializer, bytes)
     }
 }

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/IOPlugin.kt

@@ -20,7 +20,7 @@ class IOPlugin(meta: Meta) : AbstractPlugin(meta) {
         metaFormatFactories.find { it.key == key }?.invoke(meta)
 
     fun metaFormat(name: String, meta: Meta = EmptyMeta): MetaFormat? =
-        metaFormatFactories.find { it.name.last().toString() == name }?.invoke(meta)
+        metaFormatFactories.find { it.shortName == name }?.invoke(meta)
 
     val envelopeFormatFactories by lazy {
         context.content<EnvelopeFormatFactory>(ENVELOPE_FORMAT_TYPE).values

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/JsonMetaFormat.kt

@@ -9,15 +9,15 @@ import hep.dataforge.descriptors.ValueDescriptor
 import hep.dataforge.meta.Meta
 import hep.dataforge.meta.MetaBase
 import hep.dataforge.meta.MetaItem
-import hep.dataforge.names.Name
 import hep.dataforge.names.NameToken
-import hep.dataforge.names.plus
 import hep.dataforge.names.toName
 import hep.dataforge.values.*
-import kotlinx.io.core.Input
+import kotlinx.io.Input
-import kotlinx.io.core.Output
+import kotlinx.io.Output
-import kotlinx.io.core.readText
+import kotlinx.io.text.readUtf8String
-import kotlinx.io.core.writeText
+import kotlinx.io.text.writeUtf8String
+
+
 import kotlinx.serialization.json.*
 import kotlin.collections.component1
 import kotlin.collections.component2
@@ -28,11 +28,11 @@ class JsonMetaFormat(private val json: Json = Json.indented) : MetaFormat {
 
     override fun Output.writeMeta(meta: Meta, descriptor: NodeDescriptor?) {
         val jsonObject = meta.toJson(descriptor)
-        writeText(json.stringify(JsonObjectSerializer, jsonObject))
+        writeUtf8String(json.stringify(JsonObjectSerializer, jsonObject))
     }
 
     override fun Input.readMeta(descriptor: NodeDescriptor?): Meta {
-        val str = readText()
+        val str = readUtf8String()
         val jsonElement = json.parseJson(str)
         return jsonElement.toMeta()
     }
@@ -40,13 +40,13 @@ class JsonMetaFormat(private val json: Json = Json.indented) : MetaFormat {
     companion object : MetaFormatFactory {
         override fun invoke(meta: Meta, context: Context): MetaFormat = default
 
-        override val name: Name = super.name + "json"
+        override val shortName = "json"
         override val key: Short = 0x4a53//"JS"
 
         private val default = JsonMetaFormat()
 
         override fun Output.writeMeta(meta: Meta, descriptor: NodeDescriptor?) =
-            default.run { writeMeta(meta,descriptor) }
+            default.run { writeMeta(meta, descriptor) }
 
         override fun Input.readMeta(descriptor: NodeDescriptor?): Meta =
             default.run { readMeta(descriptor) }

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/MetaFormat.kt

@@ -6,8 +6,9 @@ import hep.dataforge.io.MetaFormatFactory.Companion.META_FORMAT_TYPE
 import hep.dataforge.meta.Meta
 import hep.dataforge.names.Name
 import hep.dataforge.names.asName
+import hep.dataforge.names.plus
 import hep.dataforge.provider.Type
-import kotlinx.io.core.*
+import kotlinx.io.*
 import kotlin.reflect.KClass
 
 /**
@@ -28,11 +29,13 @@ interface MetaFormat : IOFormat<Meta> {
 
 @Type(META_FORMAT_TYPE)
 interface MetaFormatFactory : IOFormatFactory<Meta>, MetaFormat {
-    override val name: Name get() = "meta".asName()
+    val shortName: String
+
+    override val name: Name get() = "meta".asName() + shortName
 
     override val type: KClass<out Meta> get() = Meta::class
 
-    val key: Short
+    val key: Short get() = name.hashCode().toShort()
 
     override operator fun invoke(meta: Meta, context: Context): MetaFormat
 
@@ -41,24 +44,16 @@ interface MetaFormatFactory : IOFormatFactory<Meta>, MetaFormat {
     }
 }
 
-fun Meta.toString(format: MetaFormat): String = buildPacket {
+fun Meta.toString(format: MetaFormat): String = buildBytes {
     format.run { writeObject(this@toString) }
-}.readText()
+}.toByteArray().decodeToString()
 
 fun Meta.toString(formatFactory: MetaFormatFactory): String = toString(formatFactory())
 
-fun Meta.toBytes(format: MetaFormat = JsonMetaFormat): ByteReadPacket = buildPacket {
-    format.run { writeObject(this@toBytes) }
-}
-
 fun MetaFormat.parse(str: String): Meta {
-    return buildPacket { writeText(str) }.readObject()
+    return str.encodeToByteArray().read { readObject() }
 }
 
-fun MetaFormatFactory.parse(str: String): Meta = invoke().parse(str)
+fun MetaFormatFactory.parse(str: String, formatMeta: Meta): Meta = invoke(formatMeta).parse(str)
-
-fun MetaFormat.fromBytes(packet: ByteReadPacket): Meta {
-    return packet.readObject()
-}
 
 

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/TaggedEnvelopeFormat.kt

@@ -7,48 +7,51 @@ import hep.dataforge.meta.string
 import hep.dataforge.names.Name
 import hep.dataforge.names.plus
 import hep.dataforge.names.toName
-import kotlinx.io.charsets.Charsets
+import kotlinx.io.*
-import kotlinx.io.core.*
+import kotlinx.io.text.readRawString
+import kotlinx.io.text.writeRawString
 
-@ExperimentalUnsignedTypes
+@ExperimentalIoApi
 class TaggedEnvelopeFormat(
     val io: IOPlugin,
-    val version: VERSION = TaggedEnvelopeFormat.VERSION.DF02
+    val version: VERSION = VERSION.DF02
 ) : EnvelopeFormat {
 
 //    private val metaFormat = io.metaFormat(metaFormatKey)
 //        ?: error("Meta format with key $metaFormatKey could not be resolved in $io")
 
 
-    private fun Tag.toBytes(): ByteReadPacket = buildPacket(24) {
+    private fun Tag.toBytes() = buildBytes(24) {
-        writeText(START_SEQUENCE)
+        writeRawString(START_SEQUENCE)
-        writeText(version.name)
+        writeRawString(version.name)
         writeShort(metaFormatKey)
         writeUInt(metaSize)
         when (version) {
-            TaggedEnvelopeFormat.VERSION.DF02 -> {
+            VERSION.DF02 -> {
                 writeUInt(dataSize.toUInt())
             }
-            TaggedEnvelopeFormat.VERSION.DF03 -> {
+            VERSION.DF03 -> {
                 writeULong(dataSize)
             }
         }
-        writeText(END_SEQUENCE)
+        writeRawString(END_SEQUENCE)
     }
 
     override fun Output.writeEnvelope(envelope: Envelope, metaFormatFactory: MetaFormatFactory, formatMeta: Meta) {
         val metaFormat = metaFormatFactory.invoke(formatMeta, io.context)
-        val metaBytes = metaFormat.writePacket(envelope.meta)
+        val metaBytes = metaFormat.writeBytes(envelope.meta)
         val actualSize: ULong = if (envelope.data == null) {
-            0u
+            0
         } else {
-            envelope.data?.size ?: ULong.MAX_VALUE
+            envelope.data?.size ?: Binary.INFINITE
+        }.toULong()
+        val tag = Tag(metaFormatFactory.key, metaBytes.size.toUInt() + 2u, actualSize)
+        writeBinary(tag.toBytes())
+        writeBinary(metaBytes)
+        writeRawString("\r\n")
+        envelope.data?.let {
+            writeBinary(it)
         }
-        val tag = Tag(metaFormatFactory.key, metaBytes.remaining.toUInt() + 2u, actualSize)
-        writePacket(tag.toBytes())
-        writePacket(metaBytes)
-        writeText("\r\n")
-        envelope.data?.read { copyTo(this@writeEnvelope) }
         flush()
     }
 
@@ -64,14 +67,17 @@ class TaggedEnvelopeFormat(
         val metaFormat = io.metaFormat(tag.metaFormatKey)
             ?: error("Meta format with key ${tag.metaFormatKey} not found")
 
-        val metaBytes = readBytes(tag.metaSize.toInt())
+        val meta: Meta = limit(tag.metaSize.toInt()).use {
-        val metaPacket = buildPacket {
+            metaFormat.run {
-            writeFully(metaBytes)
+                readObject()
+            }
         }
-        val dataBytes = readBytes(tag.dataSize.toInt())
 
-        val meta = metaFormat.run { metaPacket.readObject() }
+        val data = buildBytes {
-        return SimpleEnvelope(meta, ArrayBinary(dataBytes))
+            writeInput(this@readObject, tag.dataSize.toInt())
+        }
+
+        return SimpleEnvelope(meta, data)
     }
 
     override fun Input.readPartial(): PartialEnvelope {
@@ -80,8 +86,11 @@ class TaggedEnvelopeFormat(
         val metaFormat = io.metaFormat(tag.metaFormatKey)
             ?: error("Meta format with key ${tag.metaFormatKey} not found")
 
-        val metaPacket = ByteReadPacket(readBytes(tag.metaSize.toInt()))
+        val meta: Meta = limit(tag.metaSize.toInt()).run {
-        val meta = metaFormat.run { metaPacket.readObject() }
+            metaFormat.run {
+                readObject()
+            }
+        }
 
         return PartialEnvelope(meta, version.tagSize + tag.metaSize, tag.dataSize)
     }
@@ -107,16 +116,16 @@ class TaggedEnvelopeFormat(
             val io = context.io
 
             val metaFormatName = meta["name"].string?.toName() ?: JsonMetaFormat.name
-            val metaFormatFactory = io.metaFormatFactories.find { it.name == metaFormatName }
+            //Check if appropriate factory exists
-                ?: error("Meta format could not be resolved")
+            io.metaFormatFactories.find { it.name == metaFormatName } ?: error("Meta format could not be resolved")
 
             return TaggedEnvelopeFormat(io)
         }
 
         private fun Input.readTag(version: VERSION): Tag {
-            val start = readTextExactBytes(2, charset = Charsets.ISO_8859_1)
+            val start = readRawString(2)
             if (start != START_SEQUENCE) error("The input is not an envelope")
-            val versionString = readTextExactBytes(4, charset = Charsets.ISO_8859_1)
+            val versionString = readRawString(4)
             if (version.name != versionString) error("Wrong version of DataForge: expected $version but found $versionString")
             val metaFormatKey = readShort()
             val metaLength = readUInt()
@@ -124,14 +133,14 @@ class TaggedEnvelopeFormat(
                 VERSION.DF02 -> readUInt().toULong()
                 VERSION.DF03 -> readULong()
             }
-            val end = readTextExactBytes(4, charset = Charsets.ISO_8859_1)
+            val end = readRawString(4)
             if (end != END_SEQUENCE) error("The input is not an envelope")
             return Tag(metaFormatKey, metaLength, dataLength)
         }
 
         override fun peekFormat(io: IOPlugin, input: Input): EnvelopeFormat? {
             return try {
-                val header = input.readTextExactBytes(6)
+                val header = input.readRawString(6)
                 when (header.substring(2..5)) {
                     VERSION.DF02.name -> TaggedEnvelopeFormat(io, VERSION.DF02)
                     VERSION.DF03.name -> TaggedEnvelopeFormat(io, VERSION.DF03)

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/TaglessEnvelopeFormat.kt

@@ -3,9 +3,14 @@ package hep.dataforge.io
 import hep.dataforge.context.Context
 import hep.dataforge.meta.*
 import hep.dataforge.names.asName
-import kotlinx.io.core.*
+import kotlinx.io.*
+import kotlinx.io.text.readRawString
+import kotlinx.io.text.readUtf8Line
+import kotlinx.io.text.writeRawString
+import kotlinx.io.text.writeUtf8String
 import kotlinx.serialization.toUtf8Bytes
 
+@ExperimentalIoApi
 class TaglessEnvelopeFormat(
     val io: IOPlugin,
     meta: Meta = EmptyMeta
@@ -15,47 +20,46 @@ class TaglessEnvelopeFormat(
     private val dataStart = meta[DATA_START_PROPERTY].string ?: DEFAULT_DATA_START
 
     private fun Output.writeProperty(key: String, value: Any) {
-        writeText("#? $key: $value;\r\n")
+        writeUtf8String("#? $key: $value;\r\n")
     }
 
     override fun Output.writeEnvelope(envelope: Envelope, metaFormatFactory: MetaFormatFactory, formatMeta: Meta) {
         val metaFormat = metaFormatFactory(formatMeta, io.context)
 
         //printing header
-        writeText(TAGLESS_ENVELOPE_HEADER + "\r\n")
+        writeRawString(TAGLESS_ENVELOPE_HEADER + "\r\n")
 
         //printing all properties
-        writeProperty(META_TYPE_PROPERTY, metaFormatFactory.type)
+        writeProperty(META_TYPE_PROPERTY, metaFormatFactory.shortName)
         //TODO add optional metaFormat properties
-        val actualSize: ULong = if (envelope.data == null) {
+        val actualSize: Int = if (envelope.data == null) {
-            0u
+            0
         } else {
-            envelope.data?.size ?: ULong.MAX_VALUE
+            envelope.data?.size ?: Binary.INFINITE
         }
 
         writeProperty(DATA_LENGTH_PROPERTY, actualSize)
 
         //Printing meta
         if (!envelope.meta.isEmpty()) {
-            val metaBytes = metaFormat.writePacket(envelope.meta)
+            val metaBytes = metaFormat.writeBytes(envelope.meta)
-            writeProperty(META_LENGTH_PROPERTY, metaBytes.remaining)
+            writeProperty(META_LENGTH_PROPERTY, metaBytes.size + 2)
-            writeText(metaStart + "\r\n")
+            writeUtf8String(metaStart + "\r\n")
-            writePacket(metaBytes)
+            writeBinary(metaBytes)
-            writeText("\r\n")
+            writeUtf8String("\r\n")
         }
 
         //Printing data
         envelope.data?.let { data ->
-            writeText(dataStart + "\r\n")
+            writeUtf8String(dataStart + "\r\n")
-            writeFully(data.toBytes())
+            writeBinary(data)
         }
-        flush()
     }
 
     override fun Input.readObject(): Envelope {
-        var line: String = ""
+        var line: String
         do {
-            line = readUTF8Line() ?: error("Input does not contain tagless envelope header")
+            line = readUtf8Line() // ?: error("Input does not contain tagless envelope header")
         } while (!line.startsWith(TAGLESS_ENVELOPE_HEADER))
         val properties = HashMap<String, String>()
 
@@ -67,19 +71,23 @@ class TaglessEnvelopeFormat(
                 val (key, value) = match.destructured
                 properties[key] = value
             }
-            line = readUTF8Line() ?: return SimpleEnvelope(Meta.empty, null)
+            try {
+                line = readUtf8Line()
+            } catch (ex: EOFException) {
+                //If can't read line, return envelope without data
+                return SimpleEnvelope(Meta.empty, null)
+            }
         }
 
         var meta: Meta = EmptyMeta
 
         if (line.startsWith(metaStart)) {
             val metaFormat = properties[META_TYPE_PROPERTY]?.let { io.metaFormat(it) } ?: JsonMetaFormat
-            val metaSize = properties.get(META_LENGTH_PROPERTY)?.toInt()
+            val metaSize = properties[META_LENGTH_PROPERTY]?.toInt()
             meta = if (metaSize != null) {
-                val metaPacket = buildPacket {
+                limit(metaSize).run {
-                    writeFully(readBytes(metaSize))
+                    metaFormat.run { readObject() }
                 }
-                metaFormat.run { metaPacket.readObject() }
             } else {
                 metaFormat.run {
                     readObject()
@@ -88,17 +96,22 @@ class TaglessEnvelopeFormat(
         }
 
         do {
-            line = readUTF8Line() ?: return SimpleEnvelope(meta, null)
+            try {
+                line = readUtf8Line()
+            } catch (ex: EOFException) {
                 //returning an Envelope without data if end of input is reached
+                return SimpleEnvelope(meta, null)
+            }
         } while (!line.startsWith(dataStart))
 
         val data: Binary? = if (properties.containsKey(DATA_LENGTH_PROPERTY)) {
             val bytes = ByteArray(properties[DATA_LENGTH_PROPERTY]!!.toInt())
-            readFully(bytes)
+            readArray(bytes)
             bytes.asBinary()
         } else {
-            val bytes = readBytes()
+            buildBytes {
-            bytes.asBinary()
+                writeInput(this@readObject)
+            }
         }
 
         return SimpleEnvelope(meta, data)
@@ -106,9 +119,9 @@ class TaglessEnvelopeFormat(
 
     override fun Input.readPartial(): PartialEnvelope {
         var offset = 0u
-        var line: String = ""
+        var line: String
         do {
-            line = readUTF8Line() ?: error("Input does not contain tagless envelope header")
+            line = readUtf8Line()// ?: error("Input does not contain tagless envelope header")
             offset += line.toUtf8Bytes().size.toUInt()
         } while (!line.startsWith(TAGLESS_ENVELOPE_HEADER))
         val properties = HashMap<String, String>()
@@ -121,29 +134,31 @@ class TaglessEnvelopeFormat(
                 val (key, value) = match.destructured
                 properties[key] = value
             }
-            line = readUTF8Line() ?: return PartialEnvelope(Meta.empty, offset.toUInt(), 0.toULong())
+            try {
+                line = readUtf8Line()
                 offset += line.toUtf8Bytes().size.toUInt()
+            } catch (ex: EOFException) {
+                return PartialEnvelope(Meta.empty, offset.toUInt(), 0.toULong())
+            }
         }
 
         var meta: Meta = EmptyMeta
 
         if (line.startsWith(metaStart)) {
             val metaFormat = properties[META_TYPE_PROPERTY]?.let { io.metaFormat(it) } ?: JsonMetaFormat
-
+            val metaSize = properties[META_LENGTH_PROPERTY]?.toInt()
-            val metaSize = properties.get(META_LENGTH_PROPERTY)?.toInt()
             meta = if (metaSize != null) {
-                val metaPacket = buildPacket {
-                    writeFully(readBytes(metaSize))
-                }
                 offset += metaSize.toUInt()
-                metaFormat.run { metaPacket.readObject() }
+                limit(metaSize).run {
+                    metaFormat.run { readObject() }
+                }
             } else {
                 error("Can't partially read an envelope with undefined meta size")
             }
         }
 
         do {
-            line = readUTF8Line() ?: return PartialEnvelope(Meta.empty, offset.toUInt(), 0.toULong())
+            line = readUtf8Line() ?: return PartialEnvelope(Meta.empty, offset.toUInt(), 0.toULong())
             offset += line.toUtf8Bytes().size.toUInt()
             //returning an Envelope without data if end of input is reached
         } while (!line.startsWith(dataStart))
@@ -190,9 +205,8 @@ class TaglessEnvelopeFormat(
 
         override fun peekFormat(io: IOPlugin, input: Input): EnvelopeFormat? {
             return try {
-                val buffer = ByteArray(TAGLESS_ENVELOPE_HEADER.length)
+                val string = input.readRawString(TAGLESS_ENVELOPE_HEADER.length)
-                input.readFully(buffer)
+                return if (string == TAGLESS_ENVELOPE_HEADER) {
-                return if (String(buffer) == TAGLESS_ENVELOPE_HEADER) {
                     TaglessEnvelopeFormat(io)
                 } else {
                     null

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/serialization/MetaSerializer.kt

@@ -13,6 +13,7 @@ import kotlinx.serialization.json.JsonOutput
 
 
 @Serializer(Value::class)
+@UseExperimental(InternalSerializationApi::class)
 object ValueSerializer : KSerializer<Value> {
     private val valueTypeSerializer = EnumSerializer(ValueType::class)
     private val listSerializer by lazy { ArrayListSerializer(ValueSerializer) }

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/serialization/serializationUtils.kt

@@ -55,6 +55,7 @@ inline class SerialDescriptorBuilder(private val impl: SerialClassDescImpl) {
     fun doubleArray(name: String, isOptional: Boolean = false, vararg annotations: Annotation) =
         element(name, DoubleArraySerializer.descriptor, isOptional, *annotations)
 
+    @UseExperimental(InternalSerializationApi::class)
     inline fun <reified E : Enum<E>> enum(name: String, isOptional: Boolean = false, vararg annotations: Annotation) =
         element(name, EnumSerializer(E::class).descriptor, isOptional, *annotations)
 

dataforge-io/src/commonTest/kotlin/hep/dataforge/io/EnvelopeFormatTest.kt

@@ -1,5 +1,7 @@
 package hep.dataforge.io
 
+import kotlinx.io.readDouble
+import kotlinx.io.writeDouble
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
@@ -12,16 +14,18 @@ class EnvelopeFormatTest {
         }
         data{
             writeDouble(22.2)
+//            repeat(2000){
+//                writeInt(it)
+//            }
         }
     }
 
-    @ExperimentalStdlibApi
     @Test
     fun testTaggedFormat(){
         TaggedEnvelopeFormat.run {
-            val bytes = writeBytes(envelope)
+            val byteArray = this.writeByteArray(envelope)
-            println(bytes.decodeToString())
+            println(byteArray.decodeToString())
-            val res = readBytes(bytes)
+            val res = readByteArray(byteArray)
             assertEquals(envelope.meta,res.meta)
             val double = res.data?.read {
                 readDouble()
@@ -33,9 +37,9 @@ class EnvelopeFormatTest {
     @Test
     fun testTaglessFormat(){
         TaglessEnvelopeFormat.run {
-            val bytes = writeBytes(envelope)
+            val byteArray = writeByteArray(envelope)
-            println(bytes.decodeToString())
+            println(byteArray.decodeToString())
-            val res = readBytes(bytes)
+            val res = readByteArray(byteArray)
             assertEquals(envelope.meta,res.meta)
             val double = res.data?.read {
                 readDouble()

dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MetaFormatTest.kt

@@ -1,12 +1,22 @@
 package hep.dataforge.io
 
 import hep.dataforge.meta.*
+import kotlinx.io.Bytes
+import kotlinx.io.buildBytes
 import kotlinx.serialization.json.JsonPrimitive
 import kotlinx.serialization.json.json
 import kotlinx.serialization.json.jsonArray
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
+fun Meta.toBytes(format: MetaFormat = JsonMetaFormat): Bytes = buildBytes {
+    format.run { writeObject(this@toBytes) }
+}
+
+fun MetaFormat.fromBytes(packet: Bytes): Meta {
+    return packet.read { readObject() }
+}
+
 class MetaFormatTest {
     @Test
     fun testBinaryMetaFormat() {

dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MetaSerializerTest.kt

@@ -5,8 +5,6 @@ import hep.dataforge.io.serialization.MetaSerializer
 import hep.dataforge.io.serialization.NameSerializer
 import hep.dataforge.meta.buildMeta
 import hep.dataforge.names.toName
-import kotlinx.io.charsets.Charsets
-import kotlinx.io.core.String
 import kotlinx.serialization.cbor.Cbor
 import kotlinx.serialization.json.Json
 import kotlin.test.Test
@@ -41,7 +39,7 @@ class MetaSerializerTest {
         }
 
         val bytes = Cbor.dump(MetaSerializer, meta)
-        println(String(bytes, charset = Charsets.ISO_8859_1))
+        println(bytes.contentToString())
         val restored = Cbor.load(MetaSerializer, bytes)
         assertEquals(restored, meta)
     }

dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MultipartTest.kt

@@ -1,33 +1,38 @@
 package hep.dataforge.io
 
+import hep.dataforge.meta.DFExperimental
 import hep.dataforge.meta.get
 import hep.dataforge.meta.int
-import kotlinx.io.core.writeText
+import kotlinx.io.text.writeUtf8String
+
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import kotlin.test.assertTrue
 
-class EnvelopePartsTest {
+@DFExperimental
+class MultipartTest {
     val envelopes = (0..5).map {
         Envelope {
             meta {
                 "value" put it
             }
             data {
-                writeText("Hello World $it")
+                writeUtf8String("Hello World $it")
-                repeat(200){
+                repeat(2000) {
                     writeInt(it)
                 }
             }
         }
     }
     val partsEnvelope = Envelope {
-        multipart(TaggedEnvelopeFormat, envelopes)
+        multipart(envelopes, TaggedEnvelopeFormat)
     }
 
     @Test
     fun testParts() {
-        val bytes = TaggedEnvelopeFormat.writeBytes(partsEnvelope)
+        val bytes = TaggedEnvelopeFormat.writeByteArray(partsEnvelope)
-        val reconstructed = TaggedEnvelopeFormat.readBytes(bytes)
+        assertTrue { bytes.size > envelopes.sumBy { it.data!!.size.toInt() } }
+        val reconstructed = TaggedEnvelopeFormat.readByteArray(bytes)
         val parts = reconstructed.parts()?.toList() ?: emptyList()
         assertEquals(2, parts[2].meta["value"].int)
         println(reconstructed.data!!.size)

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/FileBinary.kt

@@ -1,31 +0,0 @@
-package hep.dataforge.io
-
-import kotlinx.io.core.Input
-import kotlinx.io.core.buildPacket
-import java.nio.channels.FileChannel
-import java.nio.file.Files
-import java.nio.file.Path
-import java.nio.file.StandardOpenOption
-import kotlin.math.min
-
-@ExperimentalUnsignedTypes
-class FileBinary(val path: Path, private val offset: UInt = 0u, size: ULong? = null) : RandomAccessBinary {
-
-    override val size: ULong = size ?: (Files.size(path).toULong() - offset).toULong()
-
-    init {
-        if( size != null && Files.size(path) < offset.toLong() + size.toLong()){
-            error("Can't read binary from file. File is to short.")
-        }
-    }
-
-    override fun <R> read(from: UInt, size: UInt, block: Input.() -> R): R {
-        FileChannel.open(path, StandardOpenOption.READ).use {
-            val theSize: UInt = min(size, Files.size(path).toUInt() - offset)
-            val buffer = it.map(FileChannel.MapMode.READ_ONLY, (from + offset).toLong(), theSize.toLong())
-            return buildPacket { writeFully(buffer) }.block()
-        }
-    }
-}
-
-fun Path.asBinary(offset: UInt = 0u, size: ULong? = null): FileBinary = FileBinary(this, offset, size)

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/FileEnvelope.kt

@@ -1,23 +1,20 @@
 package hep.dataforge.io
 
 import hep.dataforge.meta.Meta
-import kotlinx.io.nio.asInput
+import kotlinx.io.Binary
-import java.nio.file.Files
+import kotlinx.io.FileBinary
+import kotlinx.io.read
 import java.nio.file.Path
-import java.nio.file.StandardOpenOption
 
 class FileEnvelope internal constructor(val path: Path, val format: EnvelopeFormat) : Envelope {
     //TODO do not like this constructor. Hope to replace it later
 
-    private val partialEnvelope: PartialEnvelope
+    private val partialEnvelope: PartialEnvelope = path.read {
-
+        format.run { readPartial() }
-    init {
-        val input = Files.newByteChannel(path, StandardOpenOption.READ).asInput()
-        partialEnvelope = format.run { input.use { it.readPartial() } }
     }
 
     override val meta: Meta get() = partialEnvelope.meta
 
-    override val data: Binary? = FileBinary(path, partialEnvelope.dataOffset, partialEnvelope.dataSize)
+    override val data: Binary? = FileBinary(path, partialEnvelope.dataOffset.toInt(), partialEnvelope.dataSize?.toInt())
 }
 

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/fileIO.kt

@@ -5,13 +5,9 @@ import hep.dataforge.meta.DFExperimental
 import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
 import hep.dataforge.meta.isEmpty
-import kotlinx.io.core.Output
+import kotlinx.io.*
-import kotlinx.io.core.copyTo
-import kotlinx.io.nio.asInput
-import kotlinx.io.nio.asOutput
 import java.nio.file.Files
 import java.nio.file.Path
-import java.nio.file.StandardOpenOption
 import kotlin.reflect.full.isSuperclassOf
 import kotlin.streams.asSequence
 
@@ -23,7 +19,6 @@ inline fun <reified T : Any> IOPlugin.resolveIOFormat(): IOFormat<T>? {
     return ioFormats.values.find { it.type.isSuperclassOf(T::class) } as IOFormat<T>?
 }
 
-
 /**
  * Read file containing meta using given [formatOverride] or file extension to infer meta type.
  * If [path] is a directory search for file starting with `meta` in it
@@ -41,7 +36,9 @@ fun IOPlugin.readMetaFile(path: Path, formatOverride: MetaFormat? = null, descri
 
     val metaFormat = formatOverride ?: metaFormat(extension) ?: error("Can't resolve meta format $extension")
     return metaFormat.run {
-        Files.newByteChannel(actualPath, StandardOpenOption.READ).asInput().use { it.readMeta(descriptor) }
+        actualPath.read{
+            readMeta(descriptor)
+        }
     }
 }
 
@@ -61,8 +58,8 @@ fun IOPlugin.writeMetaFile(
         path
     }
     metaFormat.run {
-        Files.newByteChannel(actualPath, StandardOpenOption.WRITE, StandardOpenOption.CREATE_NEW).asOutput().use {
+        actualPath.write{
-            it.writeMeta(meta, descriptor)
+            writeMeta(meta, descriptor)
         }
     }
 }
@@ -139,24 +136,12 @@ fun IOPlugin.readEnvelopeFile(
     } else null
 }
 
-private fun Path.useOutput(consumer: Output.() -> Unit) {
-    //TODO forbid rewrite?
-    Files.newByteChannel(
-        this,
-        StandardOpenOption.CREATE, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING
-    ).asOutput().use {
-        it.consumer()
-        it.flush()
-    }
-}
-
 /**
  * Write a binary into file. Throws an error if file already exists
  */
 fun <T : Any> IOFormat<T>.writeToFile(path: Path, obj: T) {
-    path.useOutput {
+    path.write {
         writeObject(obj)
-        flush()
     }
 }
 
@@ -170,7 +155,7 @@ fun IOPlugin.writeEnvelopeFile(
     envelopeFormat: EnvelopeFormat = TaggedEnvelopeFormat,
     metaFormat: MetaFormatFactory? = null
 ) {
-    path.useOutput {
+    path.write {
         with(envelopeFormat) {
             writeEnvelope(envelope, metaFormat ?: envelopeFormat.defaultMetaFormat)
         }
@@ -196,10 +181,10 @@ fun IOPlugin.writeEnvelopeDirectory(
         writeMetaFile(path, envelope.meta, metaFormat)
     }
     val dataFile = path.resolve(IOPlugin.DATA_FILE_NAME)
-    dataFile.useOutput {
+    dataFile.write {
         envelope.data?.read {
-            val copied = copyTo(this@useOutput)
+            val copied = writeInput(this)
-            if (envelope.data?.size != ULong.MAX_VALUE && copied != envelope.data?.size?.toLong()) {
+            if (envelope.data?.size != Binary.INFINITE && copied != envelope.data?.size) {
                 error("The number of copied bytes does not equal data size")
             }
         }

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/tcp/EnvelopeClient.kt

@@ -7,7 +7,6 @@ import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
 import kotlinx.coroutines.asCoroutineDispatcher
 import kotlinx.coroutines.withContext
-import kotlinx.io.streams.writePacket
 import java.net.Socket
 import java.util.concurrent.Executors
 import kotlin.time.ExperimentalTime
@@ -52,14 +51,14 @@ class EnvelopeClient(
     override suspend fun respond(request: Envelope): Envelope = withContext(dispatcher) {
         //val address = InetSocketAddress(host,port)
         val socket = Socket(host, port)
-        val input = socket.getInputStream().asInput()
+        val inputStream = socket.getInputStream()
-        val output = socket.getOutputStream()
+        val outputStream = socket.getOutputStream()
         format.run {
-            output.writePacket {
+            outputStream.write {
                 writeObject(request)
             }
             logger.debug { "Sent request with type ${request.type} to ${socket.remoteSocketAddress}" }
-            val res = input.readObject()
+            val res = inputStream.readBlocking { readObject() }
             logger.debug { "Received response with type ${res.type} from ${socket.remoteSocketAddress}" }
             return@withContext res
         }

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/tcp/EnvelopeServer.kt

@@ -9,7 +9,6 @@ import hep.dataforge.io.type
 import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
 import kotlinx.coroutines.*
-import kotlinx.io.streams.writePacket
 import java.net.ServerSocket
 import java.net.Socket
 import kotlin.concurrent.thread
@@ -71,11 +70,11 @@ class EnvelopeServer(
 
     private fun readSocket(socket: Socket) {
         thread {
-            val input = socket.getInputStream().asInput()
+            val inputStream = socket.getInputStream()
             val outputStream = socket.getOutputStream()
             format.run {
                 while (socket.isConnected) {
-                    val request = input.readObject()
+                    val request = inputStream.readBlocking { readObject() }
                     logger.debug { "Accepted request with type ${request.type} from ${socket.remoteSocketAddress}" }
                     if (request.type == SHUTDOWN_ENVELOPE_TYPE) {
                         //Echo shutdown command
@@ -86,7 +85,7 @@ class EnvelopeServer(
                     }
                     runBlocking {
                         val response = responder.respond(request)
-                        outputStream.writePacket {
+                        outputStream.write {
                             writeObject(response)
                         }
                         logger.debug { "Sent response with type ${response.type} to ${socket.remoteSocketAddress}" }

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/tcp/InputStreamAsInput.kt

@@ -1,32 +0,0 @@
-package hep.dataforge.io.tcp
-
-import kotlinx.io.core.AbstractInput
-import kotlinx.io.core.Input
-import kotlinx.io.core.IoBuffer
-import kotlinx.io.core.writePacket
-import kotlinx.io.streams.readPacketAtMost
-import java.io.InputStream
-
-/**
- * Modified version of InputStream to Input converter that supports waiting for input
- */
-internal class InputStreamAsInput(
-    private val stream: InputStream
-) : AbstractInput(pool = IoBuffer.Pool) {
-
-
-    override fun fill(): IoBuffer? {
-        val packet = stream.readPacketAtMost(4096)
-        return pool.borrow().apply {
-            resetForWrite(4096)
-            writePacket(packet)
-        }
-    }
-
-    override fun closeSource() {
-        stream.close()
-    }
-}
-
-fun InputStream.asInput(): Input =
-    InputStreamAsInput(this)

dataforge-io/src/jvmMain/kotlin/hep/dataforge/io/tcp/streams.kt

@@ -0,0 +1,62 @@
+package hep.dataforge.io.tcp
+
+import kotlinx.io.Input
+import kotlinx.io.Output
+import kotlinx.io.asBinary
+import kotlinx.io.buffer.Buffer
+import kotlinx.io.buffer.get
+import kotlinx.io.buffer.set
+import java.io.InputStream
+import java.io.OutputStream
+
+private class InputStreamInput(val source: InputStream, val waitForInput: Boolean = false) : Input() {
+    override fun closeSource() {
+        source.close()
+    }
+
+    override fun fill(buffer: Buffer): Int {
+        if (waitForInput) {
+            while (source.available() == 0) {
+                //block until input is available
+            }
+        }
+        var bufferPos = 0
+        do {
+            val byte = source.read()
+            buffer[bufferPos] = byte.toByte()
+            bufferPos++
+        } while (byte > 0 && bufferPos < buffer.size && source.available() > 0)
+        return bufferPos
+    }
+}
+
+private class OutputStreamOutput(val out: OutputStream) : Output() {
+    override fun flush(source: Buffer, length: Int) {
+        for (i in 0..length) {
+            out.write(source[i].toInt())
+        }
+        out.flush()
+    }
+
+    override fun closeSource() {
+        out.flush()
+        out.close()
+    }
+}
+
+
+fun <R> InputStream.read(size: Int, block: Input.() -> R): R {
+    val buffer = ByteArray(size)
+    read(buffer)
+    return buffer.asBinary().read(block)
+}
+
+fun <R> InputStream.read(block: Input.() -> R): R =
+    InputStreamInput(this, false).block()
+
+fun <R> InputStream.readBlocking(block: Input.() -> R): R =
+    InputStreamInput(this, true).block()
+
+fun OutputStream.write(block: Output.() -> Unit) {
+    OutputStreamOutput(this).block()
+}

dataforge-io/src/jvmTest/kotlin/hep/dataforge/io/FileBinaryTest.kt

@@ -1,6 +1,9 @@
 package hep.dataforge.io
 
 import hep.dataforge.context.Global
+import kotlinx.io.asBinary
+import kotlinx.io.toByteArray
+import kotlinx.io.writeDouble
 import java.nio.file.Files
 import kotlin.test.Test
 import kotlin.test.assertEquals
@@ -21,11 +24,11 @@ class FileBinaryTest {
     @Test
     fun testSize() {
         val binary = envelope.data
-        assertEquals(binary?.size?.toInt(), binary?.toBytes()?.size)
+        assertEquals(binary?.size?.toInt(), binary?.toByteArray()?.size)
     }
 
     @Test
-    fun testFileData(){
+    fun testFileData() {
         val dataFile = Files.createTempFile("dataforge_test_bin", ".bin")
         dataFile.toFile().writeText("This is my binary")
         val envelopeFromFile = Envelope {
@@ -34,12 +37,12 @@ class FileBinaryTest {
                 "b" put 22.2
             }
             dataType = "hep.dataforge.satellite"
-            dataID = "cellDepositTest" // добавил только что
+            dataID = "cellDepositTest"
             data = dataFile.asBinary()
         }
         val binary = envelopeFromFile.data!!
-        println(binary.toBytes().size)
+        println(binary.toByteArray().size)
-        assertEquals(binary.size?.toInt(), binary.toBytes().size)
+        assertEquals(binary.size.toInt(), binary.toByteArray().size)
 
     }
 
@@ -50,7 +53,6 @@ class FileBinaryTest {
         Global.io.writeEnvelopeFile(tmpPath, envelope)
 
         val binary = Global.io.readEnvelopeFile(tmpPath)?.data!!
-        assertEquals(binary.size.toInt(), binary.toBytes().size)
+        assertEquals(binary.size.toInt(), binary.toByteArray().size)
     }
-
 }

dataforge-io/src/jvmTest/kotlin/hep/dataforge/io/FileEnvelopeTest.kt

@@ -1,6 +1,7 @@
 package hep.dataforge.io
 
 import hep.dataforge.context.Global
+import kotlinx.io.writeDouble
 import java.nio.file.Files
 import kotlin.test.Test
 import kotlin.test.assertTrue

dataforge-io/src/jvmTest/kotlin/hep/dataforge/io/tcp/EnvelopeServerTest.kt

@@ -4,11 +4,12 @@ import hep.dataforge.context.Global
 import hep.dataforge.io.Envelope
 import hep.dataforge.io.Responder
 import hep.dataforge.io.TaggedEnvelopeFormat
-import hep.dataforge.io.writeBytes
+import hep.dataforge.io.writeByteArray
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.runBlocking
-import org.junit.jupiter.api.AfterAll
+import kotlinx.io.writeDouble
-import org.junit.jupiter.api.BeforeAll
+import org.junit.AfterClass
+import org.junit.BeforeClass
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.time.ExperimentalTime
@@ -16,7 +17,7 @@ import kotlin.time.ExperimentalTime
 @ExperimentalStdlibApi
 object EchoResponder : Responder {
     override suspend fun respond(request: Envelope): Envelope {
-        val string = TaggedEnvelopeFormat().run { writeBytes(request).decodeToString() }
+        val string = TaggedEnvelopeFormat().run { writeByteArray(request).decodeToString() }
         println("ECHO:")
         println(string)
         return request
@@ -30,20 +31,20 @@ class EnvelopeServerTest {
         @JvmStatic
         val echoEnvelopeServer = EnvelopeServer(Global, 7778, EchoResponder, GlobalScope)
 
-        @BeforeAll
+        @BeforeClass
         @JvmStatic
         fun start() {
             echoEnvelopeServer.start()
         }
 
-        @AfterAll
+        @AfterClass
         @JvmStatic
         fun close() {
             echoEnvelopeServer.stop()
         }
     }
 
-    @Test
+    @Test(timeout = 1000)
     fun doEchoTest() {
         val request = Envelope.invoke {
             type = "test.echo"

dataforge-output/src/commonMain/kotlin/hep/dataforge/output/TextOutput.kt

@@ -9,7 +9,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlin.reflect.KClass
 
-class TextOutput(override val context: Context, private val output: kotlinx.io.core.Output) : Output<Any> {
+class TextOutput(override val context: Context, private val output: kotlinx.io.Output) : Output<Any> {
     private val cache = HashMap<KClass<*>, TextRenderer>()
 
     /**
@@ -40,7 +40,7 @@ class TextOutput(override val context: Context, private val output: kotlinx.io.c
 }
 
 /**
- * A text or binary renderer based on [kotlinx.io.core.Output]
+ * A text or binary renderer based on [kotlinx.io.Output]
  */
 @Type(TEXT_RENDERER_TYPE)
 interface TextRenderer {
@@ -53,7 +53,7 @@ interface TextRenderer {
      */
     val type: KClass<*>
 
-    suspend fun kotlinx.io.core.Output.render(obj: Any)
+    suspend fun kotlinx.io.Output.render(obj: Any)
 
     companion object {
         const val TEXT_RENDERER_TYPE = "dataforge.textRenderer"
@@ -64,7 +64,7 @@ object DefaultTextRenderer : TextRenderer {
     override val priority: Int = Int.MAX_VALUE
     override val type: KClass<*> = Any::class
 
-    override suspend fun kotlinx.io.core.Output.render(obj: Any) {
+    override suspend fun kotlinx.io.Output.render(obj: Any) {
         append(obj.toString())
         append('\n')
     }

dataforge-workspace/src/commonMain/kotlin/hep/dataforge/workspace/envelopeData.kt

@@ -2,10 +2,13 @@ package hep.dataforge.workspace
 
 import hep.dataforge.data.Data
 import hep.dataforge.data.await
-import hep.dataforge.io.*
+import hep.dataforge.io.Envelope
+import hep.dataforge.io.IOFormat
+import hep.dataforge.io.SimpleEnvelope
+import hep.dataforge.io.readWith
 import kotlinx.coroutines.coroutineScope
-import kotlinx.io.core.Input
+import kotlinx.io.Input
-import kotlinx.io.core.buildPacket
+import kotlinx.io.buildPacket
 import kotlin.reflect.KClass
 
 /**

dataforge-workspace/src/jvmTest/kotlin/hep/dataforge/workspace/FileDataTest.kt

@@ -6,10 +6,10 @@ import hep.dataforge.io.IOFormat
 import hep.dataforge.io.io
 import hep.dataforge.meta.DFExperimental
 import kotlinx.coroutines.runBlocking
-import kotlinx.io.core.Input
+import kotlinx.io.Input
-import kotlinx.io.core.Output
+import kotlinx.io.Output
-import kotlinx.io.core.readText
+import kotlinx.io.readText
-import kotlinx.io.core.writeText
+import kotlinx.io.writeText
 import java.nio.file.Files
 import kotlin.test.Ignore
 import kotlin.test.Test

settings.gradle.kts

@@ -32,3 +32,5 @@ include(
     ":dataforge-workspace",
     ":dataforge-scripting"
 )
+
+//includeBuild("../kotlinx-io")