HTML.java

package spimedb.util;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.safety.Cleaner;
import org.jsoup.safety.Whitelist;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Created by me on 12/26/16.
 */
public final class HTML {
//
//    public static final HtmlCompressor compressor = new HtmlCompressor();
//
//    static {
//        //https://code.google.com/p/htmlcompressor/wiki/Documentation#Using_HTML_Compressor_from_Java_API
//
//        compressor.setRemoveComments(true);            //if false keeps HTML comments (default is true)
//        compressor.setRemoveMultiSpaces(true);         //if false keeps multiple whitespace characters (default is true)
//        compressor.setRemoveIntertagSpaces(true);      //removes iter-tag whitespace characters
//        compressor.setRemoveQuotes(true);              //removes unnecessary tag attribute quotes
//        compressor.setRemoveScriptAttributes(true);    //remove optional attributes from script tags
//        compressor.setRemoveLinkAttributes(true);      //remove optional attributes from link tags
//        compressor.setRemoveJavaScriptProtocol(true);      //remove optional attributes from link tags
//        compressor.setRemoveHttpProtocol(true);        //replace "http://" with "//" inside tag attributes
//        compressor.setRemoveHttpsProtocol(true);       //replace "https://" with "//" inside tag attributes
//        compressor.setRemoveSurroundingSpaces("br,p"); //remove spaces around provided tags
//        compressor.setRemoveStyleAttributes(true);
//
//        compressor.setSimpleDoctype(true);             //simplify existing doctype
//        compressor.setCompressCss(true);               //compress inline css
//
//
//    }


    static final Whitelist whitelist = Whitelist.basicWithImages();
    static final Cleaner cleaner = new Cleaner(whitelist);
    static final Document.OutputSettings outputSettings = new Document.OutputSettings().prettyPrint(false);

    static final Logger logger = LoggerFactory.getLogger(HTML.class);

    public static String filterHTML(String html) {

        try {
            Document dirty = Jsoup.parseBodyFragment(html);
            Document clean = cleaner.clean(dirty);
            clean.outputSettings(outputSettings);
            return clean.body().html();

//            String compressedHtml = compressor.compress(html);
//            return compressedHtml;
        } catch (Exception e) {
            logger.error("filterHTML {}: \"{}\"", e, html);
            return html;
        }

    }

}