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/*******************************************************************************
* Copyright (c) 2002 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.xml.core.internal.catalog;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.eclipse.wst.xml.core.internal.Logger;
import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalog;
import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalogEntry;
import org.eclipse.wst.xml.core.internal.catalog.provisional.INextCatalog;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Write OASIS XML Catalog format
*
*/
public final class CatalogWriter
{
private Document doc;
public void write(ICatalog xmlCatalog, String uri) throws FileNotFoundException, IOException
{
visitCatalog(xmlCatalog);
OutputStream outputStream = getOutputStream(uri);
serialize(outputStream);
}
public void write(ICatalog catalog, OutputStream os) throws FileNotFoundException, IOException
{
if (catalog != null)
{
visitCatalog(catalog);
serialize(os);
}
}
private void visitCatalog(ICatalog xmlCatalog)
{
try
{
doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
}
catch (ParserConfigurationException e)
{
Logger.logException(e);
}
if (doc == null)
return;
Element catalogElement = doc.createElementNS(OASISCatalogConstants.namespaceName, OASISCatalogConstants.TAG_CATALOG);
doc.appendChild(catalogElement);
processCatalogEntries(xmlCatalog, catalogElement);
processNextCatalogs(xmlCatalog, catalogElement);
}
private void processCatalogEntries(ICatalog catalog, Element parent)
{
ICatalogEntry[] catalogEntries = catalog.getCatalogEntries();
for (int i = 0; i < catalogEntries.length; i++)
{
ICatalogEntry entry = catalogEntries[i];
String key = entry.getKey();
String uri = entry.getURI();
String id = entry.getId();
Element childElement = null;
switch (entry.getEntryType())
{
case ICatalogEntry.ENTRY_TYPE_PUBLIC :
childElement = parent.getOwnerDocument().createElement(OASISCatalogConstants.TAG_PUBLIC);
if (childElement != null)
{
childElement.setAttribute(OASISCatalogConstants.ATTR_PUBLIC_ID, key);
childElement.setAttribute(OASISCatalogConstants.ATTR_URI, uri);
}
break;
case ICatalogEntry.ENTRY_TYPE_SYSTEM :
childElement = parent.getOwnerDocument().createElement(OASISCatalogConstants.TAG_SYSTEM);
if (childElement != null)
{
childElement.setAttribute(OASISCatalogConstants.ATTR_SYSTEM_ID, key);
childElement.setAttribute(OASISCatalogConstants.ATTR_URI, uri);
}
break;
case ICatalogEntry.ENTRY_TYPE_URI :
childElement = parent.getOwnerDocument().createElement(OASISCatalogConstants.TAG_URI);
if (childElement != null)
{
childElement.setAttribute(OASISCatalogConstants.ATTR_NAME, key);
childElement.setAttribute(OASISCatalogConstants.ATTR_URI, uri);
}
break;
default :
break;
}
if(childElement != null && id != null && !id.equals("")){ //$NON-NLS-1$
childElement.setAttribute(OASISCatalogConstants.ATTR_ID, id);
}
String[] attributes = entry.getAttributes();
for (int j = 0; j < attributes.length; j++)
{
String attrName = attributes[j];
if (attrName != null && !attrName.equals("")) //$NON-NLS-1$
{
String attrValue = entry.getAttributeValue(attrName);
if (childElement != null && attrValue != null)
{
childElement.setAttribute(attrName, attrValue);
}
}
}
if (childElement != null)
{
parent.appendChild(childElement);
}
}
}
private void processNextCatalogs(ICatalog catalog, Element parent)
{
// handle catalog entries
INextCatalog[] nextCatalogs = catalog.getNextCatalogs();
Element childElement = null;
//dw String attrValue = null;
for (int i = 0; i < nextCatalogs.length; i++)
{
INextCatalog delegate = nextCatalogs[i];
childElement = parent.getOwnerDocument().createElement(OASISCatalogConstants.TAG_NEXT_CATALOG);
if (childElement != null)
{
parent.appendChild(childElement);
String location = delegate.getCatalogLocation();
if (location != null)
{
childElement.setAttribute(OASISCatalogConstants.ATTR_CATALOG, location);
}
String id = delegate.getId();
if (id != null)
{
childElement.setAttribute(OASISCatalogConstants.ATTR_ID, id);
}
}
}
}
private void serialize(OutputStream outputStream) throws FileNotFoundException, IOException
{
if (doc == null)
return;
try
{
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$
transformer.setOutputProperty(OutputKeys.METHOD, "xml"); //$NON-NLS-1$
// Unless a width is set, there will be only line breaks but no
// indentation.
// The IBM JDK and the Sun JDK don't agree on the property name,
// so we set them both.
//
transformer.setOutputProperty("{http://xml.apache.org/xalan}indent-amount", "2"); //$NON-NLS-1$ //$NON-NLS-2$
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2"); //$NON-NLS-1$ //$NON-NLS-2$
String encoding = "UTF-8"; // TBD //$NON-NLS-1$
if (encoding != null)
{
transformer.setOutputProperty(OutputKeys.ENCODING, encoding);
}
transformer.transform(new DOMSource(doc), new StreamResult(outputStream));
}
catch (TransformerException e)
{
Logger.logException(e);
}
}
private OutputStream getOutputStream(String uri) throws FileNotFoundException, IOException
{
String filePath = removeProtocol(uri);
File file = new File(filePath);
OutputStream stream = new FileOutputStream(file);
return stream;
}
protected static String removeProtocol(String uri)
{
String result = uri;
String protocol_pattern = ":"; //$NON-NLS-1$
if (uri != null)
{
int index = uri.indexOf(protocol_pattern);
if (index > 2)
{
result = result.substring(index + protocol_pattern.length());
}
}
return result;
}
}
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