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Improve obfuscation docs and add ProGuard example (#1658)

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Max Rumpf 3 years ago committed by GitHub
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  1. 37
      tutorials/Native_distributions_and_local_execution/README.md

37
tutorials/Native_distributions_and_local_execution/README.md

@ -547,6 +547,39 @@ fun main() {
## Obfuscation ## Obfuscation
To obfuscate Compose Multiplatform JVM applications standard approach for JVM application works. Using task packageUberJarForCurrentOS one could generate JAR file which could be later obfuscated using ProGuard or R8, see for example https://stackoverflow.com/questions/64355998/proguard-example-for-gradle-java-application. To obfuscate Compose Multiplatform JVM applications the standard approach for JVM applications works.
With the task `packageUberJarForCurrentOS` one could generate a JAR file which could be later obfuscated using ProGuard or R8.
Also example in the document using Kotlin DSL would be better, as above link uses Groovy. ### ProGuard example
``` kotlin
// build.gradle.kts
// Add ProGuard to buildscript classpath
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("com.guardsquare:proguard-gradle:7.1.1") {
exclude("com.android.tools.build")
}
}
}
// ...
// Define task to obfuscate the JAR and output to <name>.min.jar
tasks.register<ProGuardTask>("obfuscate") {
val packageUberJarForCurrentOS by getting
dependsOn(packageUberJarForCurrentOS)
val files = packageUberJarForCurrentOS.outputs.files
injars(files)
outjars(files.map { file -> File(file.parentFile, "${file.nameWithoutExtension}.min.jar") })
val library = if (System.getProperty("java.version").startsWith("1.")) "lib/rt.jar" else "jmods"
libraryjars("${System.getProperty("java.home")}/$library")
configuration("proguard-rules.pro")
}
```

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