Let JarFileLocation work with custom ClassLoader URIs.

Some ClassLoaders that work with repackaged JAR files return custom resource URIs to indicate custom class loading locations. For example, the ClassLoader in a packaged Spring Boot's returns the following URI for source package named example: jar:file:/Path/to/my.jar!/BOOT-INF/classes!/example/. Note the second "!/" to indicate a classpath root.

Prior to this commit, JarFileLocation was splitting paths to a resource at the first "!/" assuming the remainder of the string would depict the actual resource path. That remainder potentially containing a further "!/" would prevent the JAR entry matching in FromJar.classFilesBeneath(…) as the entries themselves do not contain the exclamation mark.

This commit changes the treatment of the URI in JarFileLocation to rather use the *last* "!/" as splitting point so that the remainder is a proper path within the ClassLoader and the matching in FromJar.classFilesBeneath(…) works properly.

archunit/src/main/java/com/tngtech/archunit/core/importer/Location.java

@@ -269,7 +269,9 @@ private static URI newJarUri(URI uri) {
         @Override
         ClassFileSource asClassFileSource(ImportOptions importOptions) {
             try {
-                String[] parts = uri.toString().split("!/", 2);
+                String uriString = uri.toString();
+                int index = uriString.lastIndexOf("!/");
+                String[] parts = { uriString.substring(0, index), uriString.substring(index + 2) };
                 return new ClassFileSource.FromJar(new URL(parts[0] + "!/"), parts[1], importOptions);
             } catch (IOException e) {
                 throw new LocationException(e);