ManifestTransformerTask.kt

/*
 * Copyright (C) 2023 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.
 */
import org.gradle.api.DefaultTask
import org.gradle.api.file.RegularFileProperty
import org.gradle.api.tasks.InputFile
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.TaskAction
import org.gradle.api.tasks.PathSensitive
import org.gradle.api.tasks.PathSensitivity

abstract class ManifestTransformerTask: DefaultTask() {

    @get:InputFile
    @get:PathSensitive(PathSensitivity.NONE)
    abstract val gitInfoFile: RegularFileProperty

    @get:InputFile
    @get:PathSensitive(PathSensitivity.NONE)
    abstract val mergedManifest: RegularFileProperty

    @get:OutputFile
    abstract val updatedManifest: RegularFileProperty

    @TaskAction
    fun taskAction() {

        val gitVersion = gitInfoFile.get().asFile.readText()
        var manifest = mergedManifest.asFile.get().readText()
        manifest = manifest.replace("package=\"com.example.android.recipes.transformManifest\" >", "" +
                "package=\"com.example.android.recipes.transformManifest\"\n" +
                "android:versionName=\"$gitVersion\" >")
        updatedManifest.get().asFile.writeText(manifest)
    }
}