public static Set findUrls()

in xbean-finder/src/main/java/org/apache/xbean/finder/ClassLoaders.java [40:74]
29 lines of code
12 McCabe index (conditional complexity)

    public static Set<URL> findUrls(final ClassLoader classLoader) throws IOException {
        if (classLoader == null || (SYSTEM.getParent() != null && classLoader == SYSTEM.getParent())) {
            return Collections.emptySet();
        }

        final Set<URL> urls =  new HashSet<URL>();

        if (URLClassLoader.class.isInstance(classLoader) && !DONT_USE_GET_URLS) {
            if (!isSurefire(classLoader)) {
                for (final Collection<URL> item : Arrays.asList(
                        Arrays.asList(URLClassLoader.class.cast(classLoader).getURLs()), findUrls(classLoader.getParent()))) {
                    for (final URL url : item) {
                        addIfNotSo(urls, url);
                    }
                }
            } else { // http://jira.codehaus.org/browse/SUREFIRE-928 - we could reuse findUrlFromResources but this seems faster
                urls.addAll(fromClassPath());
            }
        }

        // DONT_USE_GET_URLS || java -jar xxx.jar and use MANIFEST.MF Class-Path?
        // here perf is not an issue since we would either miss all the classpath or we have a single jar
        if (urls.size() <= 1) {
            final Set<URL> urlFromResources = findUrlFromResources(classLoader);
            if (!urls.isEmpty()) {
                final URL theUrl = urls.iterator().next();
                if ("file".equals(theUrl.getProtocol())) {  // theUrl can be file:xxxx but it is the same entry actually
                    urlFromResources.remove(new URL("jar:" + theUrl.toExternalForm() + "!/"));
                }
            }
            urls.addAll(urlFromResources);
        }

        return urls;
    }