/*******************************************************************************
* Copyright (c) 2007, 2011 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
*******************************************************************************/
package org.eclipse.jst.jsp.core.internal.validation;
import java.io.IOException;
import java.io.InputStream;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.core.runtime.content.IContentDescription;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.jst.jsp.core.internal.Logger;
import org.eclipse.jst.jsp.core.internal.provisional.contenttype.ContentTypeIdForJSP;
import org.eclipse.wst.html.core.internal.document.HTMLDocumentTypeConstants;
import org.eclipse.wst.html.core.internal.validate.HTMLValidationAdapterFactory;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.INodeAdapterFactory;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.validate.ValidationAdapter;
import org.eclipse.wst.validation.ValidationResult;
import org.eclipse.wst.validation.ValidationState;
import org.eclipse.wst.validation.internal.provisional.core.IReporter;
import org.eclipse.wst.xml.core.internal.document.DocumentTypeAdapter;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMDocument;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
import org.eclipse.wst.xml.core.internal.validation.eclipse.Validator;
import org.w3c.dom.Element;
/**
* This validator validates the contents of the content type of the JSP, like
* the HTML regions in a JSP with content type="text/html"
*/
public class JSPContentValidator extends JSPValidator {
private static final String HTTP_JAVA_SUN_COM_JSP_PAGE = "http://java.sun.com/JSP/Page"; //$NON-NLS-1$
private static final String XMLNS = "xmlns"; //$NON-NLS-1$
private static final String XMLNS_JSP = "xmlns:jsp"; //$NON-NLS-1$
private IContentType fJSPFContentType = null;
/**
* Checks if file is a jsp fragment or not. If so, check if the fragment
* should be validated or not.
*
* @param file
* Assumes shouldValidate was already called on file so it
* should not be null and does exist
* @return false if file is a fragment and it should not be validated,
* true otherwise
*/
private boolean fragmentCheck(IFile file) {
boolean shouldValidate = true;
// quick check to see if this is possibly a jsp fragment
if (getJSPFContentType().isAssociatedWith(file.getName())) {
// get preference for validate jsp fragments
boolean shouldValidateFragments = FragmentValidationTools.shouldValidateFragment(file);
/*
* if jsp fragments should not be validated, check if file is
* really jsp fragment
*/
if (!shouldValidateFragments) {
boolean isFragment = isFragment(file);
shouldValidate = !isFragment;
}
}
return shouldValidate;
}
/**
* Returns JSP fragment content type
*
* @return jspf content type
*/
private IContentType getJSPFContentType() {
if (fJSPFContentType == null) {
fJSPFContentType = Platform.getContentTypeManager().getContentType(ContentTypeIdForJSP.ContentTypeID_JSPFRAGMENT);
}
return fJSPFContentType;
}
/*
* Copied from HTMLValidator
*/
private HTMLValidationReporter getReporter(IReporter reporter, IFile file, IDOMModel model) {
return new HTMLValidationReporter(this, reporter, file, model);
}
/*
* Copied from HTMLValidator
*/
private boolean hasHTMLFeature(IDOMDocument document) {
DocumentTypeAdapter adapter = (DocumentTypeAdapter) document.getAdapterFor(DocumentTypeAdapter.class);
if (adapter == null)
return false;
return adapter.hasFeature(HTMLDocumentTypeConstants.HTML);
}
/**
* Determines if file is jsp fragment or not (does a deep, indepth check,
* looking into contents of file)
*
* @param file
* assumes file is not null and exists
* @return true if file is jsp fragment, false otherwise
*/
private boolean isFragment(IFile file) {
boolean isFragment = false;
InputStream is = null;
try {
IContentDescription contentDescription = file.getContentDescription();
// it can be null
if (contentDescription == null) {
is = file.getContents();
contentDescription = Platform.getContentTypeManager().getDescriptionFor(is, file.getName(), new QualifiedName[]{IContentDescription.CHARSET});
}
if (contentDescription != null) {
String fileCtId = contentDescription.getContentType().getId();
isFragment = (fileCtId != null && ContentTypeIdForJSP.ContentTypeID_JSPFRAGMENT.equals(fileCtId));
}
}
catch (IOException e) {
// ignore, assume it's invalid JSP
}
catch (CoreException e) {
// ignore, assume it's invalid JSP
}
finally {
/*
* must close input stream in case others need it
* (IFile.getContents() requirement as well)
*/
if (is != null)
try {
is.close();
}
catch (Exception e) {
// not sure how to recover at this point
}
}
return isFragment;
}
private boolean isXMLJSP(IDOMDocument document) {
Element root = document.getDocumentElement();
return root != null && (root.hasAttribute(XMLNS_JSP) || HTTP_JAVA_SUN_COM_JSP_PAGE.equals(root.getAttribute(XMLNS)));
}
private void validate(IFile file, int kind, ValidationState state, IProgressMonitor monitor, IDOMModel model, IReporter reporter) {
IDOMDocument document = model.getDocument();
if (document == null)
return; // error
boolean isXMLJSP = isXMLJSP(document);
boolean hasHTMLFeature = hasHTMLFeature(document);
if (hasHTMLFeature && !isXMLJSP) {
INodeAdapterFactory factory = HTMLValidationAdapterFactory.getInstance();
ValidationAdapter adapter = (ValidationAdapter) factory.adapt(document);
if (adapter != null) {
HTMLValidationReporter rep = getReporter(reporter, file, model);
rep.clear();
adapter.setReporter(rep);
adapter.validate(document);
}
}
if (!hasHTMLFeature && isXMLJSP) {
Validator xmlValidator = new Validator();
xmlValidator.validate(file, kind, state, monitor);
}
}
/*
* Mostly copied from HTMLValidator
*/
private void validate(IReporter reporter, IFile file, IDOMModel model) {
if (file == null || model == null)
return; // error
IDOMDocument document = model.getDocument();
if (document == null)
return; // error
// This validator currently only handles validating HTML content in
// JSP
boolean hasXMLFeature = isXMLJSP(document);
boolean hasHTMLFeature = hasHTMLFeature(document);
if (hasHTMLFeature && !hasXMLFeature) {
INodeAdapterFactory factory = HTMLValidationAdapterFactory.getInstance();
ValidationAdapter adapter = (ValidationAdapter) factory.adapt(document);
if (adapter == null)
return; // error
HTMLValidationReporter rep = getReporter(reporter, file, model);
rep.clear();
adapter.setReporter(rep);
adapter.validate(document);
}
}
public ValidationResult validate(final IResource resource, int kind, ValidationState state, IProgressMonitor monitor) {
if (resource.getType() != IResource.FILE)
return null;
ValidationResult result = new ValidationResult();
final IReporter reporter = result.getReporter(monitor);
if (fragmentCheck((IFile) resource)) {
IStructuredModel model = null;
try {
model = StructuredModelManager.getModelManager().getModelForRead((IFile) resource);
if (!reporter.isCancelled() && model instanceof IDOMModel) {
reporter.removeAllMessages(this, resource);
validate((IFile) resource, kind, state, monitor, (IDOMModel) model, reporter);
}
}
catch (IOException e) {
Logger.logException(e);
}
catch (CoreException e) {
Logger.logException(e);
}
finally {
if (model != null)
model.releaseFromRead();
}
}
return result;
}
protected void validateFile(IFile f, IReporter reporter) {
IStructuredModel model = null;
try {
if (fragmentCheck(f) && !reporter.isCancelled()) {
model = StructuredModelManager.getModelManager().getModelForRead(f);
if (!reporter.isCancelled() && model instanceof IDOMModel) {
reporter.removeAllMessages(this, f);
validate(reporter, f, (IDOMModel) model);
}
}
}
catch (IOException e) {
Logger.logException(e);
}
catch (CoreException e) {
Logger.logException(e);
}
finally {
if (model != null)
model.releaseFromRead();
}
}
}