Exclude from analysis autogenerated classes

Author: jsotuyod

src/main/groovy/com/monits/gradle/sca/ClasspathAware.groovy

@@ -33,6 +33,14 @@ import java.util.zip.ZipFile
 @CompileStatic
 trait ClasspathAware {
 
+    // AGP 3.3 and 3.4 still generated plain text R java classes
+    private static final List<String> AUTOGENERATED_CLASSES = [
+        '**/R.class',
+        '**/R$*.class',
+        '**/BuildConfig.class',
+        '**/BuildConfig$*.class',
+    ].asImmutable()
+
     private static final String DEBUG_SOURCESET = 'debug'
     private static final String MAIN_SOURCESET = 'main'
     private static final String TEST_SOURCESET = 'test'
@@ -136,7 +144,7 @@ trait ClasspathAware {
      * @return FileCollection pointing to all interesting .class files
      */
     FileCollection getProjectClassTree(final Project proj, final String sourceSetName) {
-        proj.files(pathToCompiledClasses(proj, sourceSetName))
+        proj.fileTree(dir:pathToCompiledClasses(proj, sourceSetName), excludes:AUTOGENERATED_CLASSES)
     }
 
     private static FileTree getJarsForAarDependencies(final Project project) {