private void copyTagLibraries()

in maven2-plugins/myfaces-jdev-plugin/src/main/java/org/apache/myfaces/buildtools/maven2/plugin/jdeveloper/JDeveloperMojo.java [1383:1490]
98 lines of code
18 McCabe index (conditional complexity)

  private void copyTagLibraries(File projectDir, List dependencies,
                                List artifacts)
    throws IOException
  {
    File targetDir = new File(projectDir, "src/main/webapp/WEB-INF");

    for (Iterator i = dependencies.iterator(); i.hasNext(); )
    {
      Dependency dependency = (Dependency) i.next();
      MavenProject dependentProject =
        findDependentProject(dependency.getManagementKey());
      if (dependentProject != null)
      {
        List resourceRoots = dependentProject.getResources();
        for (Iterator j = resourceRoots.iterator(); j.hasNext(); )
        {
          Resource resource = (Resource) j.next();
          String resourceRoot = resource.getDirectory();
          File resourceDirectory = new File(resourceRoot);
          if (resourceDirectory.exists())
          {
            DirectoryScanner scanner = new DirectoryScanner();
            scanner.setBasedir(resourceRoot);
            scanner.addDefaultExcludes();
            scanner.setIncludes(new String[]
                { "META-INF/*.tld" });
            scanner.scan();

            String[] tldFiles = scanner.getIncludedFiles();
            for (int k = 0; k < tldFiles.length; k++)
            {
              File sourceFile = new File(resourceDirectory, tldFiles[k]);
              File targetFile = new File(targetDir, sourceFile.getName());

              if (targetFile.exists())
              {
                targetFile.delete();
              }
              FileUtils.copyFile(sourceFile, targetFile);
            }
          }
        }
      }
    }


    Map sourceMap = new TreeMap();

    for (Iterator i = artifacts.iterator(); i.hasNext(); )
    {
      Artifact artifact = (Artifact) i.next();
      if (!isDependentProject(artifact.getDependencyConflictId()) &&
          "jar".equals(artifact.getType()))
      {
        File file = artifact.getFile();
        JarFile jarFile = new JarFile(file);
        Enumeration jarEntries = jarFile.entries();
        while (jarEntries.hasMoreElements())
        {
          JarEntry jarEntry = (JarEntry) jarEntries.nextElement();
          String name = jarEntry.getName();
          if (name.startsWith("META-INF/") && name.endsWith(".tld"))
          {
            List taglibs = (List) sourceMap.get(name);
            if (taglibs == null)
            {
              taglibs = new ArrayList();
              sourceMap.put(name, taglibs);
            }

            taglibs.add(file);
          }
        }
      }
    }

    for (Iterator i = sourceMap.entrySet().iterator(); i.hasNext(); )
    {
      Map.Entry e = (Map.Entry) i.next();
      List taglibs = (List) e.getValue();
      String name = (String) e.getKey();

      for (Iterator ti = taglibs.iterator(); ti.hasNext(); )
      {
        File file = (File) ti.next();
        File sourceFile = new File(name);
        StringBuffer buff = new StringBuffer(sourceFile.getName());
        if (taglibs.size() > 1)
        {
          String jarName =
            file.getName().substring(0, file.getName().length() -
                                     ".jar".length());
          buff.insert(buff.length() - ".tld".length(), "-" + jarName);
        }

        URL jarURL = file.toURL();
        URL sourceURL =
          new URL("jar:" + jarURL.toExternalForm() + "!/" + name);
        File targetFile = new File(targetDir, buff.toString());
        if (targetFile.exists())
        {
          targetFile.delete();
        }
        FileUtils.copyURLToFile(sourceURL, targetFile);
        targetFile.setReadOnly();
      }
    }
  }