org.jetbrains.kotlin.gradle.plugin.mpp.GenerateProjectStructureMetadata.kt Maven / Gradle / Ivy

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There is a newer version: 2.0.20-RC

/*
 * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
 * that can be found in the license/LICENSE.txt file.
 */

package org.jetbrains.kotlin.gradle.plugin.mpp

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.Internal
import org.gradle.api.tasks.Nested
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.TaskAction
import java.io.File
import javax.xml.transform.OutputKeys
import javax.xml.transform.TransformerFactory
import javax.xml.transform.dom.DOMSource
import javax.xml.transform.stream.StreamResult

open class GenerateProjectStructureMetadata : DefaultTask() {
    @get:Internal
    internal lateinit var lazyKotlinProjectStructureMetadata: Lazy

    @get:Nested
    internal val kotlinProjectStructureMetadata: KotlinProjectStructureMetadata
        get() = lazyKotlinProjectStructureMetadata.value

    @get:OutputFile
    val resultXmlFile: File
        get() = project.buildDir.resolve("kotlinProjectStructureMetadata/$MULTIPLATFORM_PROJECT_METADATA_FILE_NAME")

    @TaskAction
    fun generateMetadataXml() {
        resultXmlFile.parentFile.mkdirs()

        val document = kotlinProjectStructureMetadata.toXmlDocument()

        TransformerFactory.newInstance().newTransformer().apply {
            setOutputProperty(OutputKeys.INDENT, "yes")
            setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4")
        }.transform(DOMSource(document), StreamResult(resultXmlFile))
    }
}

internal const val MULTIPLATFORM_PROJECT_METADATA_FILE_NAME = "kotlin-project-structure-metadata.xml"