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Posted to commits@lenya.apache.org by eg...@apache.org on 2003/10/17 16:28:37 UTC
cvs commit: cocoon-lenya/src/java/org/apache/lenya/cms/cocoon/transformation SimpleLinkRewritingTransformer.java
egli 2003/10/17 07:28:37
Added: src/java/org/apache/lenya/cms/cocoon/transformation
SimpleLinkRewritingTransformer.java
Log:
This simple link rewriting transformer is used for Link
Management. Links that look like internal links (currently
http://$hostname:$portname/$context-prefix/$publication-id/authoring/$document-id
are rewritten for the appropriate area.
Revision Changes Path
1.1 cocoon-lenya/src/java/org/apache/lenya/cms/cocoon/transformation/SimpleLinkRewritingTransformer.java
Index: SimpleLinkRewritingTransformer.java
===================================================================
/*
$Id: SimpleLinkRewritingTransformer.java,v 1.1 2003/10/17 14:28:37 egli Exp $
<License>
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without modifica-
tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The end-user documentation included with the redistribution, if any, must
include the following acknowledgment: "This product includes software
developed by the Apache Software Foundation (http://www.apache.org/)."
Alternately, this acknowledgment may appear in the software itself, if
and wherever such third-party acknowledgments normally appear.
4. The names "Apache Lenya" and "Apache Software Foundation" must not be
used to endorse or promote products derived from this software without
prior written permission. For written permission, please contact
apache@apache.org.
5. Products derived from this software may not be called "Apache", nor may
"Apache" appear in their name, without prior written permission of the
Apache Software Foundation.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
This software consists of voluntary contributions made by many individuals
on behalf of the Apache Software Foundation and was originally created by
Michael Wechner <mi...@apache.org>. For more information on the Apache Soft-
ware Foundation, please see <http://www.apache.org/>.
Lenya includes software developed by the Apache Software Foundation, W3C,
DOM4J Project, BitfluxEditor, Xopus, and WebSHPINX.
</License>
*/
package org.apache.lenya.cms.cocoon.transformation;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.cocoon.ProcessingException;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.cocoon.transformation.AbstractTransformer;
import org.apache.lenya.cms.publication.PageEnvelope;
import org.apache.lenya.cms.publication.PageEnvelopeException;
import org.apache.lenya.cms.publication.PageEnvelopeFactory;
import org.apache.lenya.cms.publication.Publication;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* This is a simple transformer which rewrites <a
* href="http://localhost:8080/lenya/unicom/authoring/doctypes/2columns.html">
* to <a
* href="http://localhost:8080/lenya/unicom/$AREA/doctypes/2columns.html">.
*
* Ideally this transformer could be replaced by the
* LinkRewrittingTransformer that Forrest uses if we employ the same
* scheme for internal links.
*
* @author Christian Egli
*/
public class SimpleLinkRewritingTransformer extends AbstractTransformer {
private String baseURI;
private PageEnvelope envelope = null;
private int serverPort;
private String serverName;
public static final String INTERNAL_LINK_PREFIX = "site:";
public void setup(
SourceResolver resolver,
Map objectModel,
String source,
Parameters parameters)
throws ProcessingException {
Request request = ObjectModelHelper.getRequest(objectModel);
try {
envelope =
PageEnvelopeFactory.getInstance().getPageEnvelope(objectModel);
} catch (PageEnvelopeException e) {
throw new ProcessingException(e);
}
String mountPoint =
envelope.getContext() + "/" + envelope.getPublication().getId();
StringBuffer uribuf = new StringBuffer();
boolean isSecure = request.isSecure();
this.serverPort = request.getServerPort();
if (isSecure)
uribuf.append("https://");
else
uribuf.append("http://");
this.serverName = request.getServerName();
uribuf.append(this.serverName);
if (isSecure) {
if (this.serverPort != 443) {
uribuf.append(":").append(this.serverPort);
}
} else {
if (this.serverPort != 80) {
uribuf.append(":").append(this.serverPort);
}
}
uribuf.append(mountPoint);
baseURI = uribuf.toString();
}
public void startElement(
String uri,
String name,
String qname,
Attributes attrs)
throws SAXException {
AttributesImpl newAttrs = null;
// FIXME: This pattern is extremely similar to the pattern in
// org.apache.lenya.cms.publication.xsp.DocumentReferencesHelper and has the
// same problems. See DocumentReferencesHelper#getInternalLinkPattern().
Pattern pattern =
Pattern.compile(
"http://"
+ this.serverName
+ ":"
+ this.serverPort
+ envelope.getContext()
+ "/"
+ envelope.getPublication().getId()
+ "/"
+ Publication.AUTHORING_AREA
+ "(/[-a-zA-Z0-9_/]+?)(_[a-z][a-z])?\\.html");
if (name.equals("a")) {
for (int i = 0, size = attrs.getLength(); i < size; i++) {
String attrName = attrs.getLocalName(i);
if (attrName.equals("href")) {
String value = attrs.getValue(i);
Matcher matcher = pattern.matcher(value);
if (matcher.find()) {
// yes, this is an internal link that we need to rewrite
if (newAttrs == null)
newAttrs = new AttributesImpl(attrs);
String newValue =
baseURI
+ "/"
+ envelope.getDocument().getArea()
+ matcher.group(1)
+ ".html";
newAttrs.setValue(i, newValue);
}
}
}
}
if (newAttrs == null)
super.startElement(uri, name, qname, attrs);
else
super.startElement(uri, name, qname, newAttrs);
}
public void recycle() {
this.envelope = null;
this.serverName = null;
this.baseURI = null;
}
}
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