private void shadeDir()

in src/main/java/org/apache/maven/plugins/shade/DefaultShader.java [259:321]
62 lines of code
8 McCabe index (conditional complexity)

    private void shadeDir(
            ShadeRequest shadeRequest,
            Set<String> resources,
            List<ResourceTransformer> transformers,
            DefaultPackageMapper packageMapper,
            JarOutputStream jos,
            Map<String, HashSet<File>> duplicates,
            File jar,
            File current,
            String prefix,
            List<Filter> jarFilters)
            throws IOException {
        final File[] children = current.listFiles();
        if (children == null) {
            return;
        }
        for (final File file : children) {
            final String name = prefix + file.getName();
            if (file.isDirectory()) {
                try {
                    shadeDir(
                            shadeRequest,
                            resources,
                            transformers,
                            packageMapper,
                            jos,
                            duplicates,
                            jar,
                            file,
                            prefix + file.getName() + '/',
                            jarFilters);
                    continue;
                } catch (Exception e) {
                    throw new IOException(String.format("Problem shading JAR %s entry %s: %s", current, name, e), e);
                }
            }
            if (isFiltered(jarFilters, name) || isExcludedEntry(name)) {
                continue;
            }

            try {
                shadeJarEntry(
                        shadeRequest,
                        resources,
                        transformers,
                        packageMapper,
                        jos,
                        duplicates,
                        jar,
                        new Callable<InputStream>() {
                            @Override
                            public InputStream call() throws Exception {
                                return Files.newInputStream(file.toPath());
                            }
                        },
                        name,
                        file.lastModified(),
                        -1 /*ignore*/);
            } catch (Exception e) {
                throw new IOException(String.format("Problem shading JAR %s entry %s: %s", current, name, e), e);
            }
        }
    }