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package com.clickntap.utils;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

import java.io.*;
import java.net.MalformedURLException;

public class XMLUtils {

    public static void copyTo(Document doc, OutputStream out) throws UnsupportedEncodingException, IOException {
        OutputFormat format = OutputFormat.createPrettyPrint();
        XMLWriter writer = new XMLWriter(out, format);
        writer.write(doc);
    }

    public static void copyTo(Document doc, File file) throws UnsupportedEncodingException, IOException {
        copyTo(doc, new FileOutputStream(file));
    }

    public static void copyTo(Document doc, String file) throws UnsupportedEncodingException, IOException {
        copyTo(doc, new File(file));
    }

    public static Document copyFrom(String file) throws DocumentException {
        return copyFrom(file, false);
    }

    public static Document copyFrom(File file) throws DocumentException, MalformedURLException {
        return copyFrom(file, false);
    }

    public static Document copyFrom(InputStream in) throws DocumentException, MalformedURLException {
        return copyFrom(in, false);
    }

    public static Document copyFrom(String fileName, boolean validating) throws DocumentException {
        return getReader(validating).read(fileName);
    }

    public static Document copyFrom(File file, boolean validating) throws DocumentException, MalformedURLException {
        return getReader(validating).read(file);
    }

    public static Document copyFrom(InputStream in, boolean validating) throws DocumentException {
        return getReader(validating).read(in);
    }

    private static SAXReader getReader(boolean validating) {
        SAXReader reader = new SAXReader();
        reader.setValidation(validating);
        return reader;
    }

    public static String toString(Element element) throws UnsupportedEncodingException, IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        copyTo(element.getDocument(), out);
        return out.toString(ConstUtils.UTF_8);
    }

}