blob: 3e23182123b16783c567070ea4adb35da1ae1ed4 [file] [log] [blame]
//
// This Gradle build file illustrates how to process a program
// library, such that it remains usable as a library.
// Usage:
// gradle -b library.gradle proguard
//
// Tell Gradle where to find the ProGuard task.
buildscript {
repositories {
flatDir dirs: '../../lib'
}
dependencies {
classpath ':proguard'
}
}
// Define a ProGuard task.
task ('proguard', type: proguard.gradle.ProGuardTask) {
// You should probably import a more compact ProGuard-style configuration
// file for all static settings, but we're specifying them all here, for
// the sake of the example.
//configuration 'configuration.pro'
verbose
// Specify the input jars, output jars, and library jars.
// In this case, the input jar is the program library that we want to process.
injars 'in.jar'
outjars 'out.jar'
// Automatically handle the Java version of this build.
if (System.getProperty('java.version').startsWith('1.')) {
// Before Java 9, the runtime classes were packaged in a single jar file.
libraryjars "${System.getProperty('java.home')}/lib/rt.jar"
} else {
// As of Java 9, the runtime classes are packaged in modular jmod files.
libraryjars "${System.getProperty('java.home')}/jmods/java.base.jmod", jarfilter: '!**.jar', filter: '!module-info.class'
//libraryjars "${System.getProperty('java.home')}/jmods/....."
}
// Save the obfuscation mapping to a file, so we can de-obfuscate any stack
// traces later on. Keep a fixed source file attribute and all line number
// tables to get line numbers in the stack traces.
// You can comment this out if you're not interested in stack traces.
printmapping 'out.map'
keepparameternames
renamesourcefileattribute 'SourceFile'
keepattributes 'Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,EnclosingMethod'
// Preserve all annotations.
keepattributes '*Annotation*'
// Preserve all public classes, and their public and protected fields and
// methods.
keep 'public class * { \
public protected *; \
}'
// Preserve all .class method names.
keepclassmembernames 'class * { \
java.lang.Class class$(java.lang.String); \
java.lang.Class class$(java.lang.String, boolean); \
}'
// Preserve all native method names and the names of their classes.
keepclasseswithmembernames includedescriptorclasses: true, 'class * { \
native <methods>; \
}'
// Preserve the special static methods that are required in all enumeration
// classes.
keepclassmembers allowoptimization: true, 'enum * { \
public static **[] values(); \
public static ** valueOf(java.lang.String); \
}'
// Explicitly preserve all serialization members. The Serializable interface
// is only a marker interface, so it wouldn't save them.
// You can comment this out if your library doesn't use serialization.
// If your code contains serializable classes that have to be backward
// compatible, please refer to the manual.
keepclassmembers 'class * implements java.io.Serializable { \
static final long serialVersionUID; \
static final java.io.ObjectStreamField[] serialPersistentFields; \
private void writeObject(java.io.ObjectOutputStream); \
private void readObject(java.io.ObjectInputStream); \
java.lang.Object writeReplace(); \
java.lang.Object readResolve(); \
}'
// Your library may contain more items that need to be preserved;
// typically classes that are dynamically created using Class.forName:
// keep 'public class com.example.MyClass'
// keep 'public interface com.example.MyInterface'
// keep 'public class * implements com.example.MyInterface'
}