public Reader getResourceReader()

in velocity-engine-core/src/main/java/org/apache/velocity/runtime/resource/loader/FileResourceLoader.java [100:168]

• 45 lines of code
• 8 McCabe index (conditional complexity)

    public Reader getResourceReader(String templateName, String encoding)
            throws ResourceNotFoundException
    {
        /*
         * Make sure we have a valid templateName.
         */
        if (org.apache.commons.lang3.StringUtils.isEmpty(templateName))
        {
            /*
             * If we don't get a properly formed templateName then
             * there's not much we can do. So we'll forget about
             * trying to search any more paths for the template.
             */
            throw new ResourceNotFoundException(
                    "Need to specify a file name or file path!");
        }

        String template = FilenameUtils.normalize( templateName, true );
        if ( template == null || template.length() == 0 )
        {
            String msg = "File resource error: argument " + template +
                    " contains .. and may be trying to access " +
                    "content outside of template root.  Rejected.";

            log.error("FileResourceLoader: {}", msg);

            throw new ResourceNotFoundException ( msg );
        }

        int size = paths.size();
        for (String path : paths)
        {
            InputStream rawStream = null;
            Reader reader = null;

            try
            {
                rawStream = findTemplate(path, template);
                if (rawStream != null)
                {
                    reader = buildReader(rawStream, encoding);
                }
            }
            catch (IOException ioe)
            {
                closeQuiet(rawStream);
                String msg = "Exception while loading Template " + template;
                log.error(msg, ioe);
                throw new VelocityException(msg, ioe, rsvc.getLogContext().getStackTrace());
            }
            if (reader != null)
            {
                /*
                 * Store the path that this template came
                 * from so that we can check its modification
                 * time.
                 */
                templatePaths.put(templateName, path);
                return reader;
            }
        }

        /*
         * We have now searched all the paths for
         * templates and we didn't find anything so
         * throw an exception.
         */
        throw new ResourceNotFoundException("FileResourceLoader: cannot find " + template);
    }