Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static final Pattern encgt = Pattern.compile(">");
    private static final Pattern enclt = Pattern.compile("<");
    private static final Pattern encQuot = Pattern.compile(""");
    private static final Pattern encAmp = Pattern.compile("&");

    /**
     * Helper function for quickly retrieving a String value of a given
     * XML element.
     * @param ele The document element from which to pull the String value.
     * @param tagName The name of the node.
     * @return The String value of the given node in the element passed in.
     */
    public static String getTextValue(Element ele, String tagName) {
        String textVal = null;
        NodeList nl = ele.getElementsByTagName(tagName);
        if (nl != null && nl.getLength() > 0) {
            Element el = (Element) nl.item(0);
            if (el.getFirstChild() != null) {
                textVal = el.getFirstChild().getNodeValue();
            } else {
                textVal = "";
            }
        }
        return decode(textVal);
    }

    /**
     * Helper function for decode XML entities.
     *
     * @param str The XML-encoded String to decode.
     * @return An XML-decoded String.
     */
    public static String decode(String str) {

        if (str == null) {
            return null;
        }

        Matcher gtmatcher = encgt.matcher(str);
        if (gtmatcher.matches()) {
            str = gtmatcher.replaceAll(">");
        }
        Matcher ltmatcher = enclt.matcher(str);
        if (ltmatcher.matches()) {
            str = ltmatcher.replaceAll("<");
        }
        Matcher quotMatcher = encQuot.matcher(str);
        if (quotMatcher.matches()) {
            str = quotMatcher.replaceAll("\"");
        }
        Matcher ampMatcher = encAmp.matcher(str);
        if (ampMatcher.matches()) {
            str = ampMatcher.replaceAll("&");
        }

        return str;
    }
}