/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jstl.rt;
import com.caucho.jsp.BodyContentImpl;
import com.caucho.jsp.PageContextImpl;
import com.caucho.util.L10N;
import com.caucho.vfs.TempCharReader;
import com.caucho.vfs.Vfs;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.XMLFilter;
import org.xml.sax.XMLReader;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyTagSupport;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import java.io.Reader;
public class XmlParseTag extends BodyTagSupport {
private static L10N L = new L10N(XmlParseTag.class);
private Object _xml;
private String _systemId;
private Object _filter;
private String _var;
private String _scope;
private String _varDom;
private String _scopeDom;
/**
* Sets the xml
*/
public void setXml(Object xml)
{
_xml = xml;
}
/**
* Sets the xml
*/
public void setDoc(Object xml)
{
setXml(xml);
}
/**
* Sets the system id
*/
public void setSystemId(String systemId)
{
_systemId = systemId;
}
/**
* Sets the filter
*/
public void setFilter(Object filter)
{
_filter = filter;
}
/**
* Sets the variable
*/
public void setVar(String var)
{
_var = var;
}
/**
* Sets the scope
*/
public void setScope(String scope)
{
_scope = scope;
}
/**
* Sets the variable
*/
public void setVarDom(String var)
{
_varDom = var;
}
/**
* Sets the scope
*/
public void setScopeDom(String scope)
{
_scopeDom = scope;
}
public int doEndTag() throws JspException
{
try {
PageContextImpl pageContext = (PageContextImpl) this.pageContext;
BodyContentImpl body = (BodyContentImpl) getBodyContent();
XMLReader xmlReader = null;
Reader reader = null;
InputSource is;
if (_xml != null) {
Object obj = _xml;
if (obj instanceof Reader) {
reader = (Reader) obj;
is = new InputSource(reader);
}
else if (obj instanceof String) {
reader = Vfs.openString((String) obj).getReader();
is = new InputSource(reader);
} else if (obj instanceof XMLReader) {
xmlReader = (XMLReader) obj;
is = new InputSource();
}
else
throw new JspException(L.l("xml must be java.io.Reader, String or org.xml.sax.XMLReader at `{0}'",
obj));
}
else if (body != null) {
TempCharReader tempReader = (TempCharReader) body.getReader();
int ch;
while (Character.isWhitespace((ch = tempReader.read()))) {
}
if (ch >= 0)
tempReader.unread();
reader = tempReader;
is = new InputSource(reader);
}
/*
else if (_filter != null) {
is = null;
}
*/
else {
throw new JspException(L.l("No XML document supplied via a doc attribute or inside the body of <x:parse> tag."));
}
if (_systemId != null && is != null)
is.setSystemId(_systemId);
XMLFilter filter = (XMLFilter) _filter;
if (xmlReader == null) {
SAXParserFactory parserFactory = SAXParserFactory.newInstance();
// jsp/1m14
parserFactory.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
parserFactory.setFeature("http://xml.org/sax/features/namespaces", true);
xmlReader = parserFactory.newSAXParser().getXMLReader();
}
// jsp/1g05
if (_filter != null && _var == null && _varDom == null) {
filter.setParent(xmlReader);
filter.parse(is);
} else {
DocumentBuilderFactory domFactory
= DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true);
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.newDocument();
SAXTransformerFactory saxFactory
= (SAXTransformerFactory) SAXTransformerFactory.newInstance();
//saxFactory.setAttribute("http://xml.org/sax/features/namespace-prefixes", false);
// saxFactory.setAttribute("http://xml.org/sax/features/namespaces", false);
//saxFactory.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
// xmlReader.setFeature("http://xml.org/sax/features/namespace-prefixes", false);
TransformerHandler handler
= saxFactory.newTransformerHandler();
handler.setResult(new DOMResult(doc));
if (filter != null) {
filter.setParent(xmlReader);
filter.setContentHandler(handler);
filter.parse(is);
} else {
xmlReader.setContentHandler(handler);
xmlReader.parse(is);
}
if (_var == null && _varDom == null)
throw new JspException(L.l("x:parse needs either var or varDom"));
if (_var != null)
CoreSetTag.setValue(pageContext, _var, _scope, doc);
if (_varDom != null)
CoreSetTag.setValue(pageContext, _varDom, _scopeDom, doc);
if (reader != null)
reader.close();
}
} catch (JspException e) {
throw e;
} catch (Exception e) {
throw new JspException(e);
}
return EVAL_PAGE;
}
}