buildSrc/kotlin-dsl-dependency.gradle

/*
 * Copyright 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

def findGradleKotlinDsl() {
    // TODO(137044144): After we convert this file to Kotlin (build.gradle.kts), we can just
    // directly call the getGradleKotlinDsl() method.
    // We're not doing that yet though because Gradle takes more time to process .kts files (at the
    // time of writing, adding a .kts file adds roughly 10 addition seconds to build startup time).
    def gradleUserHome = project.gradle.getGradleUserHomeDir()
    def gradleVersion = project.gradle.getGradleVersion()
    def containingPath = "" + gradleUserHome + "/wrapper/dists/gradle-" + gradleVersion + "-bin"
    def subdirs = project.file(containingPath).listFiles()
    if (subdirs.length != 1) {
        throw new GradleException("Could not identify Gradle distribution in " + containingPath +
                                  "; expected 1, found " + subdirs.length + ": " + subdirs)
    }
    def gradleHashDir = subdirs[0]
    def kotlinDsl = "" + gradleHashDir + "/gradle-" + gradleVersion + "/lib/gradle-kotlin-dsl-" +
                    gradleVersion + ".jar"
    if (!project.file(kotlinDsl).exists()) {
        throw new GradleException("Kotlin dsl jar does not exist: " + kotlinDsl)
    }
    return project.files(kotlinDsl)
}

ext.findGradleKotlinDsl = this.&findGradleKotlinDsl