static boolean loadBufferedImage_useImageCache = true;

static BufferedImage loadBufferedImage(String snippetIDOrURL) ctex {
  if (snippetIDOrURL == null) ret null;
  if (isURL(snippetIDOrURL))
    ret imageIO_readURL(snippetIDOrURL);

  if (!isSnippetID(snippetIDOrURL)) fail("Not a URL or snippet ID: " + snippetIDOrURL);
  S snippetID = "" + parseSnippetID(snippetIDOrURL);
  
  File dir = getCacheProgramDir("Image-Snippets");
  if (loadBufferedImage_useImageCache) {
    dir.mkdirs();
    File file = new File(dir, snippetID + ".png");
    if (file.exists() && file.length() != 0)
      try {
        return ImageIO.read(file);
      } catch (Throwable e) {
        e.printStackTrace();
        // fall back to loading from sourceforge
      }
  }

  String imageURL = snippetImageURL(snippetID);
  print("Loading image: " + imageURL);
  BufferedImage image = imageIO_readURL(imageURL);

  if (loadBufferedImage_useImageCache) {
    File tempFile = new File(dir, snippetID + ".tmp." + System.currentTimeMillis());
    ImageIO.write(image, "png", tempFile);
    tempFile.renameTo(new File(dir, snippetID + ".png"));
    //Log.info("Cached image.");
  }

  //Log.info("Loaded image.");
  return image;
}

static BufferedImage loadBufferedImage(File file) ctex {
  ret file.isFile() ? ImageIO.read(file) : null;
}