package com.cedarsoft.xml;
import org.jdom.Document;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;
import org.jdom.transform.JDOMResult;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
/**
* Common xml methods
*/
public class XmlCommons {
private XmlCommons() {
}
@NotNull
@NonNls
public static String format( @NotNull @NonNls String xml ) {
if ( xml.length() == 0 ) {
return "";
}
try {
Document doc = new SAXBuilder().build( new StringReader( xml ) );
Format format = Format.getPrettyFormat();
format.setLineSeparator( "\n" );
return new XMLOutputter( format ).outputString( doc );
} catch ( Exception e ) {
throw new RuntimeException( e );
}
}
/**
* Write the document to the given file
*
* @param file the file
* @param document the document
* @throws IOException if an io exception occures
*/
public static void writeXml( @NotNull File file, @NotNull Document document ) throws IOException {
Writer writer = null;
try {
writer = new BufferedWriter( new FileWriter( file ) );
new XMLOutputter( Format.getPrettyFormat() ).output( document, writer );
} finally {
if ( writer != null ) {
writer.close();
}
}
}
@NotNull
public static DocumentBuilder getDocumentBuilder() {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware( true );
return factory.newDocumentBuilder();
} catch ( ParserConfigurationException e ) {
throw new RuntimeException( e );
}
}
public static void out( @NotNull org.w3c.dom.Document document, @NotNull OutputStream out ) {
try {
TransformerFactory.newInstance().newTransformer().transform( new DOMSource( document ), new StreamResult( out ) );
} catch ( TransformerException e ) {
throw new RuntimeException( e );
}
}
public static void out( @NotNull org.w3c.dom.Document document, @NotNull Writer out ) {
try {
TransformerFactory.newInstance().newTransformer().transform( new DOMSource( document ), new StreamResult( out ) );
} catch ( TransformerException e ) {
throw new RuntimeException( e );
}
}
@NotNull
public static Document toJDom( @NotNull org.w3c.dom.Document document ) {
try {
JDOMResult target = new JDOMResult();
TransformerFactory.newInstance().newTransformer().transform( new DOMSource( document ), target );
return target.getDocument();
} catch ( TransformerException e ) {
throw new RuntimeException( e );
}
}
@NotNull
public static org.w3c.dom.Document parse( @NotNull byte[] bytes ) throws IOException, SAXException {
return parse( new ByteArrayInputStream( bytes ) );
}
@NotNull
public static org.w3c.dom.Document parse( @NotNull InputStream in ) throws IOException, SAXException {
return getDocumentBuilder().parse( in );
}
@NotNull
public static String toString( org.w3c.dom.Document document ) {
StringWriter stringWriter = new StringWriter();
out( document, stringWriter );
return stringWriter.toString();
}
}