Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 1999-2006 University of Chicago
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.w3c.dom.Attr;

import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

import javax.xml.namespace.QName;

public class Main {
    public static final String NS_URI_XMLNS = "http://www.w3.org/2000/xmlns/";

    /**
     * Return a string for a particular QName, mapping a new prefix
     * if necessary.
     */
    public static String getStringForQName(QName qname, Element e) {
        String uri = qname.getNamespaceURI();
        String prefix = getPrefix(uri, e);
        if (prefix == null) {
            int i = 1;
            prefix = "ns" + i;
            while (getNamespace(prefix, e) != null) {
                i++;
                prefix = "ns" + i;
            }
            e.setAttributeNS(NS_URI_XMLNS, "xmlns:" + prefix, uri);
        }
        return prefix + ":" + qname.getLocalPart();
    }

    public static String getPrefix(String uri, Node e) {
        while (e != null && (e.getNodeType() == Element.ELEMENT_NODE)) {
            NamedNodeMap attrs = e.getAttributes();
            for (int n = 0; n < attrs.getLength(); n++) {
                Attr a = (Attr) attrs.item(n);
                String name;
                if ((name = a.getName()).startsWith("xmlns:") && a.getNodeValue().equals(uri)) {
                    return name.substring(6);
                }
            }
            e = e.getParentNode();
        }
        return null;
    }

    public static String getNamespace(String prefix, Node e, Node stopNode) {
        while (e != null && (e.getNodeType() == Node.ELEMENT_NODE)) {
            Attr attr = null;
            if (prefix == null) {
                attr = ((Element) e).getAttributeNode("xmlns");
            } else {
                attr = ((Element) e).getAttributeNodeNS(NS_URI_XMLNS, prefix);
            }
            if (attr != null)
                return attr.getValue();
            if (e == stopNode)
                return null;
            e = e.getParentNode();
        }
        return null;
    }

    public static String getNamespace(String prefix, Node e) {
        return getNamespace(prefix, e, null);
    }
}