public ParseResult filter(Content content,
    ParseResult parseResult,
    HTMLMetaTags metaTags,
    DocumentFragment doc) 
{
  
    Parse parse = parseResult.get(content.getUrl());
    String url = content.getBaseUrl();
    ArrayList outlinks = new ArrayList();
    walk(doc, parse, metaTags, url, outlinks);
    if (outlinks.size()  > 0) {
      Outlink[] old = parse.getData().getOutlinks();
      String title = parse.getData().getTitle();
      List list = Arrays.asList(old);
      outlinks.addAll(list);
      ParseStatus status = parse.getData().getStatus();
      String text = parse.getText();
      Outlink[] newlinks = (Outlink[])outlinks.toArray(new Outlink[outlinks.size()]);
      ParseData parseData = new ParseData(status, title, newlinks,
                                          parse.getData().getContentMeta(),
                                          parse.getData().getParseMeta());
      // replace original parse obj with new one
      parseResult.put(content.getUrl(), new ParseText(text), parseData);
    }
    return parseResult;
}

 public Configuration getConf() 
{
    return this.conf;
}

 public ParseResult getParse(Content c) 
{
    String type = c.getContentType();
    if (type != null && !type.trim().equals("") && !type.toLowerCase().startsWith("application/x-javascript"))
      return new ParseStatus(ParseStatus.FAILED_INVALID_FORMAT,
              "Content not JavaScript: '" + type + "'").getEmptyParseResult(c.getUrl(), getConf());
    String script = new String(c.getContent());
    Outlink[] outlinks = getJSLinks(script, "", c.getUrl());
    if (outlinks == null) outlinks = new Outlink[0];
    // Title? use the first line of the script...
    String title;
    int idx = script.indexOf('\n");
    if (idx != -1) {
      if (idx  > MAX_TITLE_LEN) idx = MAX_TITLE_LEN;
      title = script.substring(0, idx);
    } else {
      idx = Math.min(MAX_TITLE_LEN, script.length());
      title = script.substring(0, idx);
    }
    ParseData pd = new ParseData(ParseStatus.STATUS_SUCCESS, title, outlinks,
                                 c.getMetadata());
    return ParseResult.createParseResult(c.getUrl(), new ParseImpl(script, pd));
}

 public static  void main(String[] args) throws Exception 
{
    if (args.length <  2) {
      System.err.println(JSParseFilter.class.getName() + " file.js baseURL");
      return;
    }
    InputStream in = new FileInputStream(args[0]);
    BufferedReader br = new BufferedReader(new InputStreamReader(in, "UTF-8"));
    StringBuffer sb = new StringBuffer();
    String line = null;
    while ((line = br.readLine()) != null) sb.append(line + "\n");
    JSParseFilter parseFilter = new JSParseFilter();
    parseFilter.setConf(NutchConfiguration.create());
    Outlink[] links = parseFilter.getJSLinks(sb.toString(), "", args[1]);
    System.out.println("Outlinks extracted: " + links.length);
    for (int i = 0; i <  links.length; i++)
      System.out.println(" - " + links[i]);
}

 public  void setConf(Configuration conf) 
{
    this.conf = conf;
}