build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        google()
        mavenCentral()
        maven { url "https://jitpack.io" }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

final String[] ROOT_TO_RAW_COPYFILES = ["README.md", "LICENSE.md", "CHANGELOG.md", "CONTRIBUTORS.md"]
task copyRepoFiles(type: Copy) {
    from rootProject.files(ROOT_TO_RAW_COPYFILES)
    into "app/src/main/res/raw"
    rename { String fileName -> fileName.replace(fileName, fileName.toLowerCase())  }
} ; tasks.copyRepoFiles.execute()

@SuppressWarnings(["UnnecessaryQualifiedReference", "SpellCheckingInspection", "GroovyUnusedDeclaration"])
static String[] getUsedAndroidLanguages() {
    Set<String> langs = new HashSet<>()
    new File('.').eachFileRecurse(groovy.io.FileType.DIRECTORIES) {
        final foldername = it.name
        if (foldername.startsWith('values-') && !it.canonicalPath.contains("build" + File.separator + "intermediates")) {
            new File(it.toString()).eachFileRecurse(groovy.io.FileType.FILES) {
                if (it.name.toLowerCase().endsWith(".xml") && it.getCanonicalFile().getText('UTF-8').contains("<string")) {
                    langs.add(foldername.replace("values-", ""))
                }
            }
        }
    }
    return langs.toArray(new String[langs.size()])
}

ext.getGitHash = { ->
    def stdout = new ByteArrayOutputStream()
    exec {
        commandLine 'git', 'rev-parse', 'HEAD'
        standardOutput = stdout
    }
    return stdout.toString().trim()
}