final String widthStr = req.getParameter(SCREEN_WIDTH);
            if (StringUtil.isNotBlank(widthStr)) {
                final int width = Integer.parseInt(widthStr);
                updateHighlightInfo(highlightInfo, width);
                final HttpSession session = req.getSession(false);
                if (session != null) {
                    session.setAttribute(SCREEN_WIDTH, width);
                }
            } else {

                final int samplingHeight = height / fessConfig.getThumbnailHtmlImageThumbnailHeightAsInteger();
                param.setSourceSubsampling(samplingWidth <= 0 ? 1 : samplingWidth, samplingHeight <= 0 ? 1 : samplingHeight, 0, 0);
                param.setSourceRegion(new Rectangle(width, height > width ? width : height));

        }
        assertImageSize(outputFile, 100, 100);

    }

    private void assertImageSize(File file, int width, int height) throws IOException {
        BufferedImage img = ImageIO.read(file);
        logger.debug("width: {}, height: {}", img.getWidth(), img.getHeight());
        assertEquals("Image Width", width, img.getWidth());
        assertEquals("Image Height", height, img.getHeight());
    }

        data = "<img src=\"http://example/foo.jpg\" width=\"x\" height=\"x\">";
        assertNull(transformer.getThumbnailUrl(responseData, getDocument(data)));

        data = "<img src=\"http://example/foo.jpg\" width=\"10\" height=\"100\">";
        assertNull(transformer.getThumbnailUrl(responseData, getDocument(data)));

        data = "<img src=\"http://example/foo.jpg\" width=\"100\" height=\"10\">";

     * @return whether color styling is supported or not
     */
    boolean isColorEnabled();

    /**
     * Returns the terminal width or <code>-1</code> if not supported.
     * @return the terminal width
     */
    int getTerminalWidth();

    /**
     * Creates a new message builder.
     * @return a new message builder
     */
    @Nonnull
    MessageBuilder builder();

 * 
 * <tr><td width="20%"><code>
 *  smb1://host/share/zig/zag
 * </code></td><td width="20%"><code>
 *  /
 * </code></td><td><code>
 *  smb1://host/
 * </code></td></tr>
 * 
 * <tr><td width="20%"><code>
 *  smb1://server/
 * </code></td><td width="20%"><code>
 *  ../
 * </code></td><td><code>
 *  smb1://server/
 * </code></td></tr>
 * 
 * <tr><td width="20%"><code>
 *  smb1://

  public static CharMatcher invisible() {
    return Invisible.INSTANCE;
  }

  /**
   * Determines whether a character is single-width (not double-width). When in doubt, this matcher
   * errs on the side of returning {@code false} (that is, it tends to assume a character is
   * double-width).
   *
   * <p><b>Note:</b> as the reference file evolves, we will modify this matcher to keep it up to
   * date.
   *

                final Integer width = getAttributeAsInteger(attributes, "width");
                if (!fessConfig.isThumbnailHtmlImageUrl(thumbnailUrl)) {
                    continue;
                }
                if (height != null && width != null) {
                    try {
                        if (fessConfig.validateThumbnailSize(width, height)) {
                            return thumbnailUrl;

 * <td width="20%"><code>
 *  c/d/
 * </code></td>
 * <td><code>
 *  smb://host/share/a/b/c/d/
 * </code></td>
 * </tr>
 * 
 * <tr>
 * <td width="20%"><code>
 *  smb://host/share/foo/bar/
 * </code></td>
 * <td width="20%"><code>
 *  /share2/zig/zag
 * </code></td>
 * <td><code>
 *  smb://host/share2/zig/zag
 * </code></td>
 * </tr>
 * 
 * <tr>
 * <td width="20%"><code>

   * href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Viewport-Width">{@code
   * Viewport-Width}</a> header field name.
   *
   * @since 31.0
   */
  public static final String VIEWPORT_WIDTH = "Viewport-Width";

  /**
   * The HTTP <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Width">{@code
   * Width}</a> header field name.
   *
   * @since 31.0
   */