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- /*-- $Id$ --
-
- ============================================================================
- The Apache Software License, Version 1.1
- ============================================================================
-
- Copyright (C) 1999 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 "Fop" 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
- James Tauber <jtauber@jtauber.com>. For more information on the Apache
- Software Foundation, please see <http://www.apache.org/>.
-
- */
- package org.apache.fop.fo;
-
- // FOP
- import org.apache.fop.layout.AreaTree;
- import org.apache.fop.messaging.MessageHandler;
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.fo.pagination.Root;
-
- // SAX
- import org.xml.sax.SAXException;
- import org.xml.sax.Attributes;
- import org.xml.sax.helpers.AttributesImpl;
- import org.xml.sax.DocumentHandler;
- import org.xml.sax.AttributeList;
-
- // Java
- import java.util.Hashtable;
- import java.util.Stack;
- import java.io.IOException;
-
- /**
- * SAX Handler that builds the formatting object tree.
- */
- //public class XTFOTreeBuilder extends HandlerBase {
- public class XTFOTreeBuilder extends FOTreeBuilder
- implements DocumentHandler {
-
- // namespace implementation ideas pinched from John Cowan
- protected static class NSMap {
- String prefix;
- String uri;
- int level;
-
- NSMap(String prefix, String uri, int level) {
- this.prefix = prefix;
- this.uri = uri;
- this.level = level;
- }
- }
-
- protected int level = 0;
- protected String m_uri = null;
- protected String m_localPart = null;
- protected Stack namespaceStack = new Stack();
-
- {
- namespaceStack.push(new NSMap("xml",
- "http://www.w3.org/XML/1998/namespace",
- -1));
- namespaceStack.push(new NSMap("", "", -1));
- }
-
- protected String findURI(String prefix) {
- for (int i = namespaceStack.size() - 1; i >= 0; i--) {
- NSMap nsMap = (NSMap) (namespaceStack.elementAt(i));
- if (prefix.equals(nsMap.prefix)) return nsMap.uri;
- }
- return null;
- }
-
- protected String mapName(String name)
- throws SAXException {
-
- int colon = name.indexOf(':');
- String prefix = "";
- m_localPart = name;
- if (colon != -1) {
- prefix = name.substring(0, colon);
- m_localPart = name.substring(colon + 1);
- }
- m_uri = findURI(prefix);
- if (m_uri == null) {
- if (prefix.equals("")) {
- return name;
- } else {
- throw new SAXException(new FOPException("Unknown namespace prefix " + prefix));
- }
- }
- return m_uri + "^" + m_localPart;
- }
-
- /** SAX1 Handler for the end of an element */
- public void endElement(String rawName) throws SAXException {
- mapName(rawName);
- super.endElement(m_uri, m_localPart, rawName);
- level--;
- while (((NSMap) namespaceStack.peek()).level > level) {
- namespaceStack.pop();
- }
- }
-
- /** SAX1 Handler for the start of an element */
- public void startElement(String rawName, AttributeList attlist)
- throws SAXException {
-
- // SAX2 version of AttributeList
- AttributesImpl newAttrs = new AttributesImpl();
-
- level++;
- int length = attlist.getLength();
- for (int i = 0; i < length; i++) {
- String att = attlist.getName(i);
- if (att.equals("xmlns")) {
- namespaceStack.push( new NSMap("",
- attlist.getValue(i),
- level));
- } else if (att.startsWith("xmlns:")) {
- String value = attlist.getValue(i);
- namespaceStack.push(new NSMap(att.substring(6), value,
- level));
- } else {
- mapName(att);
- newAttrs.addAttribute(m_uri, m_localPart, att,
- attlist.getType(i), attlist.getValue(i));
- }
-
- }
-
- mapName(rawName);
- super.startElement(m_uri, m_localPart, rawName, newAttrs);
- }
- }
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