proguard.gradle.plugin.ProGuardPlugin.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of proguard-gradle Show documentation

Gradle plugin for ProGuard, the free shrinker, optimizer, obfuscator, and preverifier for Java bytecode

There is a newer version: 7.6.0

/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2021 Guardsquare NV
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

package proguard.gradle.plugin

import com.android.build.gradle.BaseExtension
import org.gradle.api.GradleException
import org.gradle.api.Plugin
import org.gradle.api.Project
import proguard.gradle.plugin.android.AndroidPlugin
import proguard.gradle.plugin.android.agpVersion

class ProGuardPlugin : Plugin {

    override fun apply(project: Project) {

        val androidExtension: BaseExtension? = project.extensions.findByName("android") as BaseExtension?
        val javaExtension = project.extensions.findByName("java")

        val javaErrMessage = """For Java projects, you can manually declare a ProGuardTask instead of applying the plugin:
                                |
                                |     task myProguardTask(type: proguard.gradle.ProGuardTask) {
                                |       // ...
                                |     }""".trimMargin()
        when {
            androidExtension != null -> {
                if (agpVersion.major < 4) {
                    throw GradleException(
                            """The ProGuard plugin only supports Android plugin 4 and higher.
                              |For Android plugin version 3 and lower, you can use ProGuard through the Android plugin integration.
                              |Please refer to the manual for further details: https://www.guardsquare.com/manual/setup/gradleplugin
                            """.trimMargin())
                }
                AndroidPlugin(androidExtension).apply(project)
            }
            javaExtension != null -> {
                throw GradleException(
                        """The ProGuard plugin requires the Android plugin to function properly.
                           |$javaErrMessage
                           """.trimMargin())
            }
            else -> {
                throw GradleException(
                    """For Android applications or libraries 'com.android.application' or 'com.android.library' is required, respectively. 
                      |$javaErrMessage
                      """.trimMargin())
            }
        }
    }
}