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General IO builder

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This commit is contained in:
Alexander Nozik 2019-03-31 21:39:41 +03:00
parent 5480d90a36
commit 8f5a20bb22
6 changed files with 29 additions and 17 deletions
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6
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Binary.kt
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@ -1,6 +0,0 @@
package hep.dataforge.io
import kotlinx.io.core.Input
//TODO replace by abstraction
typealias Binary = Input

4
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/BinaryMetaFormat.kt
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@ -8,8 +8,8 @@ import kotlinx.io.core.readText
import kotlinx.io.core.writeText import kotlinx.io.core.writeText
object BinaryMetaFormat : MetaFormat { object BinaryMetaFormat : MetaFormat {
override fun write(meta: Meta, out: Output) { override fun write(obj: Meta, out: Output) {
out.writeMeta(meta) out.writeMeta(obj)
} }
override fun read(input: Input): Meta { override fun read(input: Input): Meta {

13
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Envelope.kt
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@ -3,10 +3,11 @@ package hep.dataforge.io
import hep.dataforge.meta.Meta import hep.dataforge.meta.Meta
import hep.dataforge.meta.get import hep.dataforge.meta.get
import hep.dataforge.meta.string import hep.dataforge.meta.string
import kotlinx.io.core.Input
interface Envelope { interface Envelope {
val meta: Meta val meta: Meta
val data: Binary? val data: Input?
companion object { companion object {
@ -18,9 +19,16 @@ interface Envelope {
const val ENVELOPE_DATA_TYPE_KEY = "$ENVELOPE_NODE.dataType" const val ENVELOPE_DATA_TYPE_KEY = "$ENVELOPE_NODE.dataType"
const val ENVELOPE_DESCRIPTION_KEY = "$ENVELOPE_NODE.description" const val ENVELOPE_DESCRIPTION_KEY = "$ENVELOPE_NODE.description"
//const val ENVELOPE_TIME_KEY = "@envelope.time" //const val ENVELOPE_TIME_KEY = "@envelope.time"
} }
} }
class SimpleEnvelope(override val meta: Meta, val dataProvider: () -> Input?) : Envelope{
override val data: Input?
get() = dataProvider()
}
/** /**
* The purpose of the envelope * The purpose of the envelope
* *
@ -40,4 +48,5 @@ val Envelope.dataType: String? get() = meta[Envelope.ENVELOPE_DATA_TYPE_KEY].str
* *
* @return * @return
*/ */
val Envelope.description: String? get() = meta[Envelope.ENVELOPE_DESCRIPTION_KEY].string val Envelope.description: String? get() = meta[Envelope.ENVELOPE_DESCRIPTION_KEY].string

10
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/IOFormat.kt Normal file
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@ -0,0 +1,10 @@
package hep.dataforge.io
import kotlinx.io.core.Input
import kotlinx.io.core.Output
interface IOFormat<T : Any> {
fun write(obj: T, out: Output)
fun read(input: Input): T
}

4
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/JsonMetaFormat.kt
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@ -14,8 +14,8 @@ import kotlinx.serialization.json.*
object JsonMetaFormat : MetaFormat { object JsonMetaFormat : MetaFormat {
override fun write(meta: Meta, out: Output) { override fun write(obj: Meta, out: Output) {
val str = meta.toJson().toString() val str = obj.toJson().toString()
out.writeText(str) out.writeText(str)
} }

9
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/MetaFormat.kt
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@ -1,15 +1,14 @@
package hep.dataforge.io package hep.dataforge.io
import hep.dataforge.meta.Meta import hep.dataforge.meta.Meta
import kotlinx.io.core.* import kotlinx.io.core.BytePacketBuilder
import kotlinx.io.core.ByteReadPacket
import kotlinx.io.core.toByteArray
/** /**
* A format for meta serialization * A format for meta serialization
*/ */
interface MetaFormat { interface MetaFormat: IOFormat<Meta>
fun write(meta: Meta, out: Output)
fun read(input: Input): Meta
}
/** /**
* ServiceLoader compatible factory * ServiceLoader compatible factory