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path: root/build/scripts/gen_aar_gradle_script.py
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import argparse
import os
import tarfile

FLAT_DIRS_REPO_TEMPLATE='flatDir {{ dirs {dirs} }}\n'
MAVEN_REPO_TEMPLATE='maven {{ url "{repo}" }}\n'
KEYSTORE_TEMLATE='signingConfigs {{ debug {{ storeFile file("{keystore}") }} }}\n'

ENABLE_JAVADOC = 'tasks["bundle${suffix}Aar"].dependsOn packageJavadocTask'
DO_NOT_STRIP = '''\
    packagingOptions {
        doNotStrip "*/arm64-v8a/*.so"
        doNotStrip "*/armeabi-v7a/*.so"
        doNotStrip "*/x86_64/*.so"
        doNotStrip "*/x86/*.so"
    }
'''

AAR_TEMPLATE = """\
ext.jniLibsDirs = [
    {jni_libs_dirs}
]

ext.resDirs = [
    {res_dirs}
]

ext.assetsDirs = [
    {assets_dirs}
]

ext.javaDirs = [
    {java_dirs}
]

def aidlDirs = [
    {aidl_dirs}
]

ext.bundles = [
    {bundles}
]

ext.androidArs = [
    {aars}
]

ext.compileOnlyAndroidArs = [
    {compile_only_aars}
]

def minVersion = 18
def compileVersion = 30
def targetVersion = 30
def buildVersion = '30.0.3'

import com.android.build.gradle.LibraryPlugin
import java.nio.file.Files
import java.nio.file.Paths
import java.util.regex.Matcher
import java.util.regex.Pattern
import java.util.zip.ZipFile


apply plugin: 'com.github.dcendents.android-maven'

buildDir = "$projectDir/build"

if (!ext.has("packageSuffix"))
    ext.packageSuffix = ""

buildscript {{
//     repositories {{
//         jcenter()
//         mavenCentral()
//     }}

    repositories {{
        {maven_repos}
    }}

    dependencies {{
        classpath 'com.android.tools.build:gradle:4.0.2'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
    }}
}}

apply plugin: LibraryPlugin

repositories {{
//     flatDir {{
//         dirs System.env.PKG_ROOT + '/bundle'
//     }}
//     maven {{
//         url "http://maven.google.com/"
//     }}
//     maven {{
//         url "http://artifactory.yandex.net/artifactory/public/"
//     }}

    {flat_dirs_repo}

    {maven_repos}
}}

android {{
    {keystore}

    compileSdkVersion compileVersion
    buildToolsVersion buildVersion

    defaultConfig {{
        minSdkVersion minVersion
        targetSdkVersion targetVersion
        consumerProguardFiles '{proguard_rules}'
    }}

    sourceSets {{
        main  {{
            manifest.srcFile '{manifest}'
            jniLibs.srcDirs = jniLibsDirs
            res.srcDirs = resDirs
            assets.srcDirs = assetsDirs
            java.srcDirs = javaDirs
            aidl.srcDirs = aidlDirs
        }}
        // We don't use this feature, so we set it to nonexisting directory
        androidTest.setRoot('bundle/tests')
    }}

    {do_not_strip}

    dependencies {{
        for (bundle in bundles)
            compile("$bundle") {{
                transitive = true
            }}
        for (bundle in androidArs)
            compile(bundle) {{
                transitive = true
            }}
        for (bundle in compileOnlyAndroidArs)
            compileOnly(bundle)
    }}

    android.libraryVariants.all {{ variant ->
        def suffix = variant.buildType.name.capitalize()

        def sourcesJarTask = project.tasks.create(name: "sourcesJar${{suffix}}", type: Jar) {{
            classifier = 'sources'
            from android.sourceSets.main.java.srcDirs
            include '**/*.java'
            eachFile {{ fcd ->
                def segments = fcd.relativePath.segments
                if (segments[0] == 'impl') {{
                    fcd.relativePath = new RelativePath(true, segments.drop(1))
                }}
            }}
            includeEmptyDirs = false
        }}

        def manifestFile = android.sourceSets.main.manifest.srcFile
        def manifestXml = new XmlParser().parse(manifestFile)

        def packageName = manifestXml['@package']
        def groupName = packageName.tokenize('.')[0..-2].join('.')

        def androidNs = new groovy.xml.Namespace("http://schemas.android.com/apk/res/android")
        def packageVersion = manifestXml.attributes()[androidNs.versionName]

        def writePomTask = project.tasks.create(name: "writePom${{suffix}}") {{
            pom {{
                project {{
                    groupId groupName
                    version packageVersion
                    packaging 'aar'
                }}
            }}.writeTo("$buildDir/${{rootProject.name}}$packageSuffix-pom.xml")
        }}

        tasks["bundle${{suffix}}Aar"].dependsOn sourcesJarTask
        tasks["bundle${{suffix}}Aar"].dependsOn writePomTask
    }}

    android.libraryVariants.all {{ variant ->
        def capitalizedVariantName = variant.name.capitalize()
        def suffix = variant.buildType.name.capitalize()

        def javadocTask = project.tasks.create(name: "generate${{capitalizedVariantName}}Javadoc", type: Javadoc) {{
            group = "Javadoc"
            description "Generates Javadoc for $capitalizedVariantName"

            title = "Yandex documentation"

            source = android.sourceSets.main.java.srcDirs
            include "**/*/yandex/*/**"
            // TODO: remove this when we support internal doc exclusion in IDL
            // https://st.yandex-team.ru/MAPSMOBCORE-11364
            exclude "**/internal/**"

            ext.androidJar = "${{android.sdkDirectory.path}}/platforms/${{android.compileSdkVersion}}/android.jar"
            classpath =
                files(android.getBootClasspath().join(File.pathSeparator)) +
                configurations.compile +
                files(ext.androidJar) +
                files(variant.javaCompile.outputs.files)

            destinationDir = file("$buildDir/${{rootProject.name}}-javadoc/$capitalizedVariantName/")

            options.doclet("ExcludeDoclet")
            options.docletpath(
                files(repositories.maven.url).getAsFileTree()
                    .matching{{include "**/exclude-doclet-1.0.0.jar"}}
                        .getSingleFile())

            options.charSet = "UTF-8"
            options.encoding = "UTF-8"

            failOnError false

            afterEvaluate {{
                def dependencyTree = project.configurations.compile.getAsFileTree()
                def aar_set = dependencyTree.matching{{include "**/*.aar"}}.getFiles()
                def jar_tree = dependencyTree.matching{{include "**/*.jar"}}

                aar_set.each{{ aar ->
                    def outputPath = "$buildDir/tmp/aarJar/${{aar.name.replace('.aar', '.jar')}}"
                    classpath += files(outputPath)

                    dependsOn task(name: "extract_${{aar.getAbsolutePath().replace(File.separatorChar, '_' as char)}}-${{capitalizedVariantName}}").doLast {{
                        extractClassesJar(aar, outputPath)
                    }}
                }}
            }}
        }}

        def packageJavadocTask = project.tasks.create(name: "package${{capitalizedVariantName}}Javadoc", type: Tar) {{
            description "Makes an archive from Javadoc output"
            from "${{buildDir}}/${{rootProject.name}}-javadoc/$capitalizedVariantName/"
            archiveFileName = "${{rootProject.name}}-javadoc.tar.gz"
            destinationDirectory = new File("${{buildDir}}")
            dependsOn javadocTask
        }}

        {enable_javadoc}
    }}

}}

private def extractClassesJar(aarPath, outputPath) {{
    if (!aarPath.exists()) {{
        throw new GradleException("AAR $aarPath not found")
    }}

    def zip = new ZipFile(aarPath)
    zip.entries().each {{
        if (it.name == "classes.jar") {{
            def path = Paths.get(outputPath)
            if (!Files.exists(path)) {{
                Files.createDirectories(path.getParent())
                Files.copy(zip.getInputStream(it), path)
            }}
        }}
    }}
    zip.close()
}}

"""


def gen_build_script(args):

    def wrap(items):
        return ',\n    '.join('"{}"'.format(x) for x in items)

    bundles = []
    bundles_dirs = set(args.flat_repos)
    for bundle in args.bundles:
        dir_name, base_name = os.path.split(bundle)
        assert(len(dir_name) > 0 and len(base_name) > 0)
        name, ext = os.path.splitext(base_name)
        assert(len(name) > 0 and ext == '.aar')
        bundles_dirs.add(dir_name)
        bundles.append('com.yandex:{}@aar'.format(name))

    if len(bundles_dirs) > 0:
        flat_dirs_repo = FLAT_DIRS_REPO_TEMPLATE.format(dirs=wrap(bundles_dirs))
    else:
        flat_dirs_repo = ''

    maven_repos = ''.join(MAVEN_REPO_TEMPLATE.format(repo=repo) for repo in args.maven_repos)

    if args.keystore:
        keystore = KEYSTORE_TEMLATE.format(keystore=args.keystore)
    else:
        keystore = ''

    if args.generate_doc:
        enable_javadoc = ENABLE_JAVADOC
    else:
        enable_javadoc = ''

    if args.do_not_strip:
        do_not_strip = DO_NOT_STRIP
    else:
        do_not_strip = ''

    return AAR_TEMPLATE.format(
        aars=wrap(args.aars),
        compile_only_aars=wrap(args.compile_only_aars),
        aidl_dirs=wrap(args.aidl_dirs),
        assets_dirs=wrap(args.assets_dirs),
        bundles=wrap(bundles),
        do_not_strip=do_not_strip,
        enable_javadoc=enable_javadoc,
        flat_dirs_repo=flat_dirs_repo,
        java_dirs=wrap(args.java_dirs),
        jni_libs_dirs=wrap(args.jni_libs_dirs),
        keystore=keystore,
        manifest=args.manifest,
        maven_repos=maven_repos,
        proguard_rules=args.proguard_rules,
        res_dirs=wrap(args.res_dirs),
    )


if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('--aars', nargs='*', default=[])
    parser.add_argument('--compile-only-aars', nargs='*', default=[])
    parser.add_argument('--aidl-dirs', nargs='*', default=[])
    parser.add_argument('--assets-dirs', nargs='*', default=[])
    parser.add_argument('--bundle-name', nargs='?', default='default-bundle-name')
    parser.add_argument('--bundles', nargs='*', default=[])
    parser.add_argument('--do-not-strip', action='store_true')
    parser.add_argument('--flat-repos', nargs='*', default=[])
    parser.add_argument('--generate-doc', action='store_true')
    parser.add_argument('--java-dirs', nargs='*', default=[])
    parser.add_argument('--jni-libs-dirs', nargs='*', default=[])
    parser.add_argument('--keystore', default=None)
    parser.add_argument('--manifest', required=True)
    parser.add_argument('--maven-repos', nargs='*', default=[])
    parser.add_argument('--output-dir', required=True)
    parser.add_argument('--peers', nargs='*', default=[])
    parser.add_argument('--proguard-rules', nargs='?', default=None)
    parser.add_argument('--res-dirs', nargs='*', default=[])
    args = parser.parse_args()

    if args.proguard_rules is None:
        args.proguard_rules = os.path.join(args.output_dir, 'proguard-rules.txt')
        with open(args.proguard_rules, 'w') as f:
            pass

    for index, jsrc in enumerate(filter(lambda x: x.endswith('.jsrc'), args.peers)):
        jsrc_dir = os.path.join(args.output_dir, 'jsrc_{}'.format(str(index)))
        os.makedirs(jsrc_dir)
        with tarfile.open(jsrc, 'r') as tar:
            tar.extractall(path=jsrc_dir)
            args.java_dirs.append(jsrc_dir)

    args.build_gradle = os.path.join(args.output_dir, 'build.gradle')
    args.settings_gradle = os.path.join(args.output_dir, 'settings.gradle')
    args.gradle_properties = os.path.join(args.output_dir, 'gradle.properties')

    content = gen_build_script(args)
    with open(args.build_gradle, 'w') as f:
        f.write(content)

    with open(args.gradle_properties, 'w') as f:
        f.write('android.useAndroidX=true')

    if args.bundle_name:
        with open(args.settings_gradle, 'w') as f:
            f.write('rootProject.name = "{}"'.format(args.bundle_name))