HTML/XML entity resolving - Android android.text

Android examples for android.text:Html

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Description

HTML/XML entity resolving

Demo Code

import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Main{

    /**//from   ww  w .  j av a  2 s  . com
     * Simple HTML/XML entity resolving: Only supports unicode enitities and a very limited number text represented
     * entities (apos, quot, gt, lt, and amp). There are many more: http://www.w3.org/TR/REC-html40/sgml/dtd.html
     *
     * @param entity The entity name without & and ; (null throws NPE)
     * @return Resolved entity or the entity itself if it could not be resolved.
     */
    public static String resolveEntity(String entity) {
        if (entity.length() > 1 && entity.charAt(0) == '#') {
            if (entity.charAt(1) == 'x') {
                return String.valueOf((char) Integer.parseInt(
                        entity.substring(2), 16));
            } else {
                return String.valueOf((char) Integer.parseInt(entity
                        .substring(1)));
            }
        } else if (entity.equals("apos")) {
            return "'";
        } else if (entity.equals("quot")) {
            return "\"";
        } else if (entity.equals("gt")) {
            return ">";
        } else if (entity.equals("lt")) {
            return "<";
        } else if (entity.equals("amp")) {
            return "&";
        } else {
            return entity;
        }
    }

}

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