Publishing the java part of Kotlin multiplatform jars is now supported.

Author: nedtwigg

README.md

@@ -78,6 +78,8 @@
 
 # Changelog
 ## [Unreleased]
+### Added
+- Publishing the java part of Kotlin multiplatform jars is now supported.
 
 ## [7.1.1] - 2023-12-11
 ### Changed

src/main/resources/base/changelog.gradle

@@ -17,6 +17,16 @@ def requireEnablePublishing(Task task) {
 	}
 }
 
+def List<String> pubNames()  {
+	if (plugins.hasPlugin('java-gradle-plugin')) {
+		return ['PluginMaven']
+	} else if (plugins.hasPlugin('org.jetbrains.kotlin.multiplatform')) {
+		return ['KotlinMultiplatform', 'Jvm']
+	} else {
+		return ['MavenJava']
+	}
+}
+
 if (tasks.names.contains('changelogCheck')) {
 	spotlessChangelog {
 		branch 'release'
@@ -36,8 +46,9 @@ if (tasks.names.contains('changelogCheck')) {
 			if (requireEnablePublishing(it)) {
 				if (plugins.hasPlugin('maven-publish')) {
 					if (plugins.hasPlugin('io.github.gradle-nexus.publish-plugin')) {
-						String pubName = plugins.hasPlugin('java-gradle-plugin') ? 'PluginMaven' : 'MavenJava'
-						dependsOn "publish${pubName}PublicationToSonatypeRepository"
+						for (pubName in pubNames()) {
+							dependsOn "publish${pubName}PublicationToSonatypeRepository"
+						}
 						// only the root project has closeSonatypeStagingRepository, and it finalizes all publishToSonatype tasks
 						// https://github.com/gradle-nexus/publish-plugin
 						dependsOn rootProject.tasks.named('closeAndReleaseSonatypeStagingRepository')
@@ -69,8 +80,9 @@ if (tasks.names.contains('changelogCheck')) {
 			if (requireEnablePublishing(it)) {
 				if (childProject.plugins.hasPlugin('maven-publish')) {
 					if (rootProject.plugins.hasPlugin('io.github.gradle-nexus.publish-plugin')) {
-						String pubName = childProject.plugins.hasPlugin('java-gradle-plugin') ? 'PluginMaven' : 'MavenJava'
-						dependsOn childProject.tasks.named("publish${pubName}PublicationToSonatypeRepository")
+						for (pubName in pubNames()) {
+							dependsOn childProject.tasks.named("publish${pubName}PublicationToSonatypeRepository")
+						}
 						dependsOn rootProject.tasks.named('closeAndReleaseSonatypeStagingRepository')
 					} else {
 						dependsOn childProject.tasks.named("publishAllPublicationsToGitLabRepository")

src/main/resources/base/maven.gradle

@@ -20,6 +20,8 @@ def license_url      = 干.prop('base/maven', "${license}_url")
 def license_comments = 干.prop('base/maven', "${license}_comments")
 
 boolean isKMP = project.pluginManager.hasPlugin('org.jetbrains.kotlin.multiplatform')
+boolean isPlugin = plugins.hasPlugin('java-gradle-plugin')
+
 if (!isKMP) {
 	java {
 		withJavadocJar()
@@ -52,9 +54,27 @@ if (!isKMP) {
 }
 
 
-boolean isPlugin = plugins.hasPlugin('java-gradle-plugin')
-publishing.publications.register(isPlugin ? 'pluginMaven' : 'mavenJava', MavenPublication, {
-	artifactId = maven_artifact
+if (publishing.publications.isEmpty()) {
+	publishing.publications.register(isPlugin ? 'pluginMaven' : 'mavenJava', MavenPublication, {
+	})
+}
+
+publishing.publications.withType(MavenPublication) {
+	// KMP-aware artifactId
+	if (artifactId.endsWith('-jvm')) {
+		artifactId = maven_artifact + '-jvm'
+		// create javadoc manually to keep MavenCentral happy
+		def javadocJar = tasks.register('dokkaJavadoc', Jar.class) {
+			dependsOn('dokkatooGenerate')
+			archiveClassifier.set("javadoc")
+			from('build/dokka-module/html')
+		}
+		artifact javadocJar
+	} else if (artifactId.endsWith("-js")) {
+		artifactId = maven_artifact + '-js'
+	} else {
+		artifactId = maven_artifact
+	}
 	if (!isPlugin && !isKMP) {
 		from components.java
 	}
@@ -85,4 +105,4 @@ publishing.publications.register(isPlugin ? 'pluginMaven' : 'mavenJava', MavenPu
 			url = "https://$git_url"
 		}
 	}
-})
+}