+ simple dependency analyser to aid cleanup, #145

package org.etsi.mts.tdl.helper;

import java.io.FileInputStream;

import java.io.IOException;

import java.nio.file.FileSystem;

import java.nio.file.FileSystems;

import java.nio.file.FileVisitResult;

import java.nio.file.FileVisitor;

import java.nio.file.Files;

import java.nio.file.LinkOption;

import java.nio.file.Path;

import java.nio.file.PathMatcher;

import java.nio.file.Paths;

import java.nio.file.SimpleFileVisitor;

import java.nio.file.attribute.BasicFileAttributes;

import java.io.File;

import java.util.ArrayList;

import java.util.List;

import java.util.Map.Entry;

import java.util.jar.Attributes;

import java.util.jar.Manifest;

import java.util.stream.Collectors;

import java.util.stream.Stream;

public class DependencyAnalyser {

	static List<String> matchesList = new ArrayList<String>();

	public static void main(String[] args) throws Exception {

		PathMatcher matcher = FileSystems.getDefault().getPathMatcher("regex:.*META-INF/MANIFEST\\.MF");

        try (Stream<Path> files = Files.walk(Paths.get("../"))) {

            // Filter files that match the pattern

            List<Path> manifests = files.filter(matcher::matches)

            		.sorted()

            		.collect(Collectors.toList());

            for (Path m : manifests) {

//            	System.out.println(m);

            	getDependencies(m.toFile());

            }

        } catch (IOException e) {

            e.printStackTrace();

        }

	}

	public static void getDependencies(File file) throws Exception{

		Manifest manifest = new Manifest(new FileInputStream(file));

		Attributes attr = manifest.getMainAttributes();

		for (Entry<Object, Object> e:attr.entrySet()) {

//			System.out.println(e.getKey() + " : "+e.getValue());

		}

		String id = (String) attr.getValue("Bundle-SymbolicName");

		String bundles = (String) attr.getValue("Require-Bundle");

		if (bundles != null) {

			bundles = bundles.replaceAll(";bundle-version=(\".+?\")", "")

					.replaceAll(";resolution:=optional", "")

					.replaceAll(";visibility:=reexport", "")

					.replaceAll("-", ".")

					;

			String[] bundleList = bundles.split(",");

			System.out.println(""+id.replaceAll(";.+", ""));

			for (String b : bundleList) {

				if (!b.startsWith("org.etsi.mts")) {

//					System.out.println(id.replaceAll(";.+", "")+"-->"+b);

					System.out.println("  "+b);

				}

			}

		}

	}

}