Plugin itself can't add buildscript dependencies and then apply dokka-android plugin

Question

We have created GradleMavenPush plugin that performs upload Artifacts (Gradle Android Artifacts, Gradle Java Artifacts and Gradle Kotlin Artifacts) to Maven repositories (JCenter, Maven Central, Corporate staging/snapshot servers and local Maven repositories)

GradleMavenPush plugin itself can't add buildscript dependencies and then apply dokka-android plugin:

buildscript {
    repositories {
        jcenter()
    }

    dependencies {
        classpath "org.jetbrains.dokka:dokka-android-gradle-plugin:0.9.17"
    }
}

apply plugin: 'org.jetbrains.dokka-android'

Plugin with id 'org.jetbrains.dokka-android' not found.

Solution from Can a plugin itself add buildscript dependencies and then apply a plugin? also don't work:

apply plugin: 'groovy'

repositories {
    jcenter()
}

dependencies {
    compile gradleApi()
    compile localGroovy()

    compile "org.jetbrains.dokka:dokka-android-gradle-plugin:0.9.17"
}

apply plugin: 'org.jetbrains.dokka-android'

Plugin with id 'org.jetbrains.dokka-android' not found.

Could you provide any help?

Answer 1

Solutions above don't work for script gradle plugins (only for binary gradle plugins)

I implemented my own solution for support Dokka in script gradle plugins.

For Android Java/Kotlin Projects:

        task androidDokka(type: Exec) {
            downloadFile('https://jcenter.bintray.com/org/jetbrains/dokka/dokka-fatjar/0.9.17/dokka-fatjar-0.9.17.jar', 'dokka-fatjar.jar')
            def srcDirsNumber = android.sourceSets.main.java.srcDirs.size()
            def classpathNumber = android.getBootClasspath().size()
            def classpath = (classpathNumber > 0) ? android.getBootClasspath()[0] : ''
            def javaAPISpecificationLink = getJavaAPISpecificationLink()
            if (srcDirsNumber > 0) {
                commandLine 'java', '-jar', "$buildDir/download/dokka-fatjar.jar",
                        android.sourceSets.main.java.srcDirs[0],
                        (srcDirsNumber == 2) ? android.sourceSets.main.java.srcDirs[1] : '',
                        (srcDirsNumber == 3) ? android.sourceSets.main.java.srcDirs[2] : '',
                        '-output', "$buildDir/javadoc", '-format', 'javadoc',
                        (classpathNumber > 0) ? '-classpath' : '', (classpathNumber > 0) ? classpath : '',
                        '-links', "https://developer.android.com/reference/^${android.sdkDirectory}/docs/reference/^${javaAPISpecificationLink}"
            } else {
                commandLine 'java', '-jar', "$buildDir/download/dokka-fatjar.jar"
            }
        }

        task androidDokkaJar(type: Jar, dependsOn: androidDokka) {
            classifier = 'javadoc'
            from "$buildDir/javadoc"
        }

For Other Java/Kotlin Projects (not Android):

        task coreDokka(type: Exec) {
            downloadFile('https://jcenter.bintray.com/org/jetbrains/dokka/dokka-fatjar/0.9.17/dokka-fatjar-0.9.17.jar', 'dokka-fatjar.jar')
            def srcDirsNumber = sourceSets.main.java.srcDirs.size()
            def javaAPISpecificationLink = getJavaAPISpecificationLink()
            if (srcDirsNumber > 0) {
                commandLine 'java', '-jar', "$buildDir/download/dokka-fatjar.jar",
                        sourceSets.main.java.srcDirs[0],
                        (srcDirsNumber == 2) ? sourceSets.main.java.srcDirs[1] : '',
                        (srcDirsNumber == 3) ? sourceSets.main.java.srcDirs[2] : '',
                        '-output', "$buildDir/javadoc", '-format', 'javadoc',
                        '-links', "${javaAPISpecificationLink}"
            } else {
                commandLine 'java', '-jar', "$buildDir/download/dokka-fatjar.jar"
            }
        }

        task dokkaJar(type: Jar, dependsOn: coreDokka) {
            classifier = 'javadoc'
            from "$buildDir/javadoc"
        }