private void filterOsgiInterfaceClasses()

in plugins/org.apache.karaf.eik.ui/src/main/java/org/apache/karaf/eik/ui/project/KarafProjectBuilder.java [103:156]
44 lines of code
10 McCabe index (conditional complexity)

    private void filterOsgiInterfaceClasses(final File karafJar) throws CoreException {
        final IKarafProject karafProject = getKarafProject();

        final IFile generatedKarafFile = karafProject.getFile("runtime");
        final IPath path = generatedKarafFile.getRawLocation();

        JarInputStream sourceJar = null;
        JarOutputStream destJar = null;

        try {
            sourceJar = new JarInputStream(new FileInputStream(karafJar));
            final File filteredKarafJar = new File(path.toFile(), "generatedKaraf.jar");

            final Manifest mf = sourceJar.getManifest();
            if (mf != null) {
                destJar = new JarOutputStream(new FileOutputStream(filteredKarafJar), mf);
            } else {
                destJar = new JarOutputStream(new FileOutputStream(filteredKarafJar));
            }

            ZipEntry z = sourceJar.getNextEntry();
            while (z != null) {
                if (!z.getName().startsWith("org/osgi")) {
                    destJar.putNextEntry(z);

                    copyJarEntryData(sourceJar, destJar);
                } else {
                    sourceJar.closeEntry();
                }

                z = sourceJar.getNextEntry();
            }
        } catch (final FileNotFoundException e) {
            throw new CoreException(new Status(IStatus.ERROR, KarafUIPluginActivator.PLUGIN_ID, "Could not filter OSGi Interfaces from JAR", e));
        } catch (final IOException e) {
            throw new CoreException(new Status(IStatus.ERROR, KarafUIPluginActivator.PLUGIN_ID, "Could not filter OSGi Interfaces from JAR", e));
        } finally {
            if (sourceJar != null) {
                try {
                    sourceJar.close();
                } catch (final IOException e) {
                    // ignore
                }
            }

            if (destJar != null) {
                try {
                    destJar.close();
                } catch (final IOException e) {
                    // ignore
                }
            }
        }
    }