/**
   * Removes path information from the given string containing one or more comma separated osgi
   * bundles. Replaces escaped '\:' with ':'. Removes, reference, platform and file prefixes.
   * Removes any other path information converting the location or the last segment to a bundle id.
   *
   * @param osgiBundles list of bundles to strip path information from (commma separated)
   * @return list of bundles with path information stripped
   */
  public static String stripPathInformation(String osgiBundles) {
    StringBuffer result = new StringBuffer();
    StringTokenizer tokenizer = new StringTokenizer(osgiBundles, ","); // $NON-NLS-1$
    while (tokenizer.hasMoreElements()) {
      String token = tokenizer.nextToken();
      token = token.replaceAll("\\\\:|/:", ":"); // $NON-NLS-1$ //$NON-NLS-2$

      // read up until the first @, if there
      int atIndex = token.indexOf('@');
      String bundle = atIndex > 0 ? token.substring(0, atIndex) : token;
      bundle = bundle.trim();

      // strip [reference:][platform:][file:] prefixes if any
      if (bundle.startsWith(REFERENCE_PREFIX) && bundle.length() > REFERENCE_PREFIX.length())
        bundle = bundle.substring(REFERENCE_PREFIX.length());
      if (bundle.startsWith(PLATFORM_PREFIX) && bundle.length() > PLATFORM_PREFIX.length())
        bundle = bundle.substring(PLATFORM_PREFIX.length());
      if (bundle.startsWith(FILE_URL_PREFIX) && bundle.length() > FILE_URL_PREFIX.length())
        bundle = bundle.substring(FILE_URL_PREFIX.length());

      // if the path is relative, the last segment is the bundle symbolic name
      // Otherwise, we need to retrieve the bundle symbolic name ourselves
      IPath path = new Path(bundle);
      String id = null;
      if (path.isAbsolute()) {
        id = getSymbolicName(bundle);
      }
      if (id == null) {
        id = path.lastSegment();
      }
      if (id != null) {
        int underscoreIndex = id.indexOf('_');
        if (underscoreIndex >= 0) {
          id = id.substring(0, underscoreIndex);
        }
        if (id.endsWith(JAR_EXTENSION)) {
          id = id.substring(0, id.length() - 4);
        }
      }
      if (result.length() > 0) result.append(","); // $NON-NLS-1$
      result.append(id != null ? id : bundle);
      if (atIndex > -1) result.append(token.substring(atIndex).trim());
    }
    return result.toString();
  }
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  /** Create the default set of framework (launch) properties. */
  protected void initProperties(FrameworkContext fwCtx) {
    setPropertyIfNotSet(Constants.FRAMEWORK_BOOTDELEGATION, "");
    setPropertyIfNotSet(Constants.FRAMEWORK_BUNDLE_PARENT, Constants.FRAMEWORK_BUNDLE_PARENT_BOOT);
    setPropertyIfNotSet(Constants.FRAMEWORK_EXECPERMISSION, "");

    if (!props.containsKey(Constants.FRAMEWORK_EXECUTIONENVIRONMENT)) {
      StringBuffer ee = new StringBuffer();
      // Always allow ee minimum
      ee.append("OSGi/Minimum-1.0");
      ee.append(",OSGi/Minimum-1.1");
      ee.append(",OSGi/Minimum-1.2");
      // Set up the default ExecutionEnvironment
      if (1 == javaVersionMajor) {
        for (int i = javaVersionMinor; i > 1; i--) {
          ee.append((i > 5) ? ",JavaSE-1." : ",J2SE-1.");
          ee.append(i);
        }
      }
      props.put(Constants.FRAMEWORK_EXECUTIONENVIRONMENT, ee.toString());
    }

    setPropertyIfNotSet(Constants.FRAMEWORK_LANGUAGE, Locale.getDefault().getLanguage());
    setPropertyIfNotSet(Constants.FRAMEWORK_LIBRARY_EXTENSIONS, "");

    setPropertyIfNotSet(
        Constants.FRAMEWORK_OS_NAME, Alias.unifyOsName(System.getProperty("os.name")));

    if (!props.containsKey(Constants.FRAMEWORK_OS_VERSION)) {
      String ver = System.getProperty("os.version");
      int maj = 0;
      int min = 0;
      int mic = 0;
      String qual = null;
      if (ver != null) {
        // Convert os.version to a reasonable default
        try {
          StringTokenizer st = new StringTokenizer(ver.trim(), ".");
          maj = Integer.parseInt(st.nextToken());
          if (st.hasMoreTokens()) {
            qual = st.nextToken();
            min = Integer.parseInt(qual);
            qual = null;
            if (st.hasMoreTokens()) {
              qual = st.nextToken();
              mic = Integer.parseInt(qual);
              qual = null;
              if (st.hasMoreTokens()) {
                qual = st.nextToken();
              }
            }
          }
        } catch (Exception ignore) {
        }
      }
      Version osVersion;
      try {
        osVersion = new Version(maj, min, mic, qual);
      } catch (IllegalArgumentException skip) {
        osVersion = new Version(maj, min, mic, null);
      }
      props.put(Constants.FRAMEWORK_OS_VERSION, osVersion.toString());
    }

    setPropertyIfNotSet(
        Constants.FRAMEWORK_PROCESSOR, Alias.unifyProcessor(System.getProperty("os.arch")));

    setPropertyIfNotSet(Constants.FRAMEWORK_SECURITY, "");

    setPropertyIfNotSet(Constants.FRAMEWORK_BEGINNING_STARTLEVEL, "1");

    setPropertyIfNotSet(Constants.FRAMEWORK_STORAGE, "fwdir");

    setPropertyIfNotSet(Constants.FRAMEWORK_STORAGE_CLEAN, "");

    // NYI, fill this with values
    setPropertyIfNotSet(Constants.FRAMEWORK_SYSTEMPACKAGES, "");

    setPropertyIfNotSet(Constants.FRAMEWORK_SYSTEMPACKAGES_EXTRA, "");

    setPropertyIfNotSet(Constants.FRAMEWORK_TRUST_REPOSITORIES, "");

    // NYI
    setPropertyIfNotSet(Constants.FRAMEWORK_WINDOWSYSTEM, "");

    // Impl. constants
    props.put(Constants.FRAMEWORK_VERSION, FrameworkContext.SPEC_VERSION);
    props.put(Constants.FRAMEWORK_VENDOR, "Knopflerfish");
    props.put(Constants.SUPPORTS_FRAMEWORK_REQUIREBUNDLE, TRUE);
    props.put(Constants.SUPPORTS_FRAMEWORK_FRAGMENT, TRUE);
    // Only first framework support framework extension
    // NYI! Improve this in the future
    props.put(
        Constants.SUPPORTS_FRAMEWORK_EXTENSION,
        getClass().getClassLoader() instanceof URLClassLoader && fwCtx.id == 0 ? TRUE : FALSE);
    // Only first framework can support bootclasspath extension
    // NYI! Improve this in the future
    setPropertyIfNotSet(Constants.SUPPORTS_BOOTCLASSPATH_EXTENSION, FALSE);
    if (getBooleanProperty(Constants.SUPPORTS_BOOTCLASSPATH_EXTENSION)
        && !(getClass().getClassLoader() instanceof URLClassLoader && fwCtx.id == 1)) {
      props.put(Constants.SUPPORTS_BOOTCLASSPATH_EXTENSION, FALSE);
    }
  }