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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.IOException;
import java.io.InputStream;
import java.util.Stack;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.eclipse.wst.common.uriresolver.internal.URI;
import org.eclipse.wst.common.uriresolver.internal.util.URIHelper;
import org.eclipse.wst.xml.core.internal.Logger;
import org.eclipse.wst.xml.core.internal.XMLCoreMessages;
import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalogElement;
import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalogEntry;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
*
*
*/
public final class CatalogReader
{
public static void read(Catalog xmlCatalog, InputStream input) throws IOException
{
try
{
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
SAXParser parser = factory.newSAXParser();
parser.parse(new InputSource(input), new CatalogContentHandler(xmlCatalog));
}
catch (ParserConfigurationException e)
{
Logger.logException(e);
}
catch (SAXException e)
{
Logger.logException(e);
}
}
protected static class CatalogContentHandler extends DefaultHandler
{
protected Catalog catalog;
protected Stack baseURIStack = new Stack();
public CatalogContentHandler(Catalog xmlCatalog)
{
this.catalog = xmlCatalog;
String base = xmlCatalog.getBase();
if(base == null || base == "") { //$NON-NLS-1$
base = xmlCatalog.getLocation();
}
baseURIStack.push(base);
}
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException
{
// set base
String base = attributes.getValue(OASISCatalogConstants.ATTR_BASE); //$NON-NLS-1$
if (base != null && !base.equals("")) //$NON-NLS-1$
{
baseURIStack.push(base);
} else {
baseURIStack.push(baseURIStack.peek());
}
// processing for backward compatability start
if (localName.equals(CompatabilityConstants.TAG_USER_ENTRY))
{
int type = ICatalogEntry.ENTRY_TYPE_PUBLIC;
String typeName = attributes.getValue("", CompatabilityConstants.ATT_TYPE); //$NON-NLS-1$
if (typeName != null)
{
if (typeName.compareToIgnoreCase("SYSTEM") == 0) //$NON-NLS-1$
{
type = ICatalogEntry.ENTRY_TYPE_SYSTEM;
}
}
ICatalogElement catalogElement = catalog.createCatalogElement(type);
if (catalogElement instanceof CatalogEntry)
{
CatalogEntry catalogEntry = (CatalogEntry) catalogElement;
String key = attributes.getValue("", CompatabilityConstants.ATT_ID); //$NON-NLS-1$
catalogEntry.setKey(key);
String entryUri = attributes.getValue("", CompatabilityConstants.ATT_URI); //$NON-NLS-1$
// For relative URIs, try to resolve them using the corresponding base URI.
if(URI.createURI(entryUri).isRelative()) {
entryUri = URI.resolveRelativeURI(entryUri, baseURIStack.peek().toString());
}
catalogEntry.setURI(URIHelper.ensureURIProtocolFormat(entryUri));
String webURL = attributes.getValue("", CompatabilityConstants.ATT_WEB_URL); //$NON-NLS-1$
if (webURL != null)
{
catalogEntry.setAttributeValue(
ICatalogEntry.ATTR_WEB_URL, webURL);
}
}
catalog.addCatalogElement(catalogElement);
return;
}
// processing for backward compatability start
int type = ICatalogEntry.ENTRY_TYPE_PUBLIC;
String key = null;
//dw String catalogId = attributes.getValue("", OASISCatalogConstants.ATTR_ID);
if (OASISCatalogConstants.TAG_PUBLIC.equals(localName))
{
key = attributes.getValue("", OASISCatalogConstants.ATTR_PUBLIC_ID); //$NON-NLS-1$
}
else if (OASISCatalogConstants.TAG_SYSTEM.equals(localName))
{
key = attributes.getValue("", OASISCatalogConstants.ATTR_SYSTEM_ID); //$NON-NLS-1$
type = ICatalogEntry.ENTRY_TYPE_SYSTEM;
}
else if (OASISCatalogConstants.TAG_URI.equals(localName))
{
key = attributes.getValue("", OASISCatalogConstants.ATTR_NAME); //$NON-NLS-1$
type = ICatalogEntry.ENTRY_TYPE_URI;
}
else if (OASISCatalogConstants.TAG_NEXT_CATALOG.equals(localName))
{
String nextCatalogId = attributes.getValue("", OASISCatalogConstants.ATTR_ID); //$NON-NLS-1$
String location = attributes.getValue("", OASISCatalogConstants.ATTR_CATALOG); //$NON-NLS-1$
NextCatalog delegate = new NextCatalog();
delegate.setCatalogLocation(location);
delegate.setId(nextCatalogId);
catalog.addCatalogElement(delegate);
return;
}
else{
// do not handle other entries
return;
}
if (key == null || key.equals("")) //$NON-NLS-1$
{
Logger.log(Logger.ERROR, XMLCoreMessages.Catalog_entry_key_not_set);
return;
}
String entryURI = attributes.getValue("", OASISCatalogConstants.ATTR_URI); // mandatory //$NON-NLS-1$
if (entryURI == null || entryURI.equals("")) //$NON-NLS-1$
{
Logger.log(Logger.ERROR, XMLCoreMessages.Catalog_entry_uri_not_set);
return;
}
ICatalogElement catalogElement = catalog.createCatalogElement(type);
if (catalogElement instanceof CatalogEntry)
{
CatalogEntry catalogEntry = (CatalogEntry) catalogElement;
catalogEntry.setKey(key);
// For relative URIs, try to resolve them using the corresponding base URI.
if(URI.createURI(entryURI).isRelative()) {
entryURI = URI.resolveRelativeURI(entryURI, baseURIStack.peek().toString());
}
catalogEntry.setURI(URIHelper.ensureURIProtocolFormat(entryURI));
}
// process any other attributes
for (int j = 0; j < attributes.getLength(); j++)
{
String attrName = attributes.getLocalName(j);
if (!attrName.equals(OASISCatalogConstants.ATTR_URI) && !attrName.equals(OASISCatalogConstants.ATTR_NAME) && !attrName.equals(OASISCatalogConstants.ATTR_PUBLIC_ID)
&& !attrName.equals(OASISCatalogConstants.ATTR_SYSTEM_ID) && !attrName.equals(OASISCatalogConstants.ATTR_CATALOG) && !attrName.equals(OASISCatalogConstants.ATTR_ID)
&& !attrName.equals(OASISCatalogConstants.ATTR_BASE))
{
String attrValue = attributes.getValue(attrName);
if (attrValue != null && !attrValue.equals("")) //$NON-NLS-1$
{
catalogElement.setAttributeValue(attrName, attrValue);
}
}
}
catalog.addCatalogElement(catalogElement);
}
public void endElement(String uri, String localName, String qName) throws SAXException
{
if (baseURIStack.size() > 0)
{
baseURIStack.pop();
}
}
}
// for backward compatability
interface CompatabilityConstants{
public static final String TAG_ID_XML_CATALOG_SETTINGS = "XMLCatalogSettings"; //$NON-NLS-1$
public static final String TAG_ID_USER_ENTRIES = "UserEntries"; //$NON-NLS-1$
public static final String TAG_USER_ENTRY = "UserEntry"; //$NON-NLS-1$
public static final String ATT_TYPE = "TYPE"; //$NON-NLS-1$
public static final String ATT_ID = "ID"; //$NON-NLS-1$
public static final String ATT_URI = "URI"; //$NON-NLS-1$
public static final String ATT_WEB_URL = "WEB_URL"; //$NON-NLS-1$
}
}
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