Method processSSI

java/org/apache/catalina/ssi/SSIServlet.java:187–224

Process SSI directives in the given resource. @param req the HTTP servlet request @param res the HTTP servlet response @param resource the URL of the resource to process @throws IOException if an I/O error occurs

(HttpServletRequest req, HttpServletResponse res, URL resource)

     * @throws IOException if an I/O error occurs
     */
    protected void processSSI(HttpServletRequest req, HttpServletResponse res, URL resource) throws IOException {
        SSIExternalResolver ssiExternalResolver = new SSIServletExternalResolver(getServletContext(), req, res,
                isVirtualWebappRelative, debug, inputEncoding);
        SSIProcessor ssiProcessor = new SSIProcessor(ssiExternalResolver, debug, allowExec);
        PrintWriter printWriter;
        StringWriter stringWriter = null;
        if (buffered) {
            stringWriter = new StringWriter();
            printWriter = new PrintWriter(stringWriter);
        } else {
            printWriter = res.getWriter();
        }

        URLConnection resourceInfo = resource.openConnection();
        InputStream resourceInputStream = resourceInfo.getInputStream();
        String encoding = resourceInfo.getContentEncoding();
        if (encoding == null) {
            encoding = inputEncoding;
        }
        InputStreamReader isr;
        if (encoding == null) {
            isr = new InputStreamReader(resourceInputStream);
        } else {
            isr = new InputStreamReader(resourceInputStream, encoding);
        }

        try (BufferedReader bufferedReader = new BufferedReader(isr)) {
            long lastModified = ssiProcessor.process(bufferedReader, resourceInfo.getLastModified(), printWriter);
            if (lastModified > 0) {
                res.setDateHeader("last-modified", lastModified);
            }
            if (stringWriter != null) {
                printWriter.flush();
                String text = stringWriter.toString();
                res.getWriter().write(text);
            }
        }
    }
}