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/*******************************************************************************
* Copyright (c) 2004, 2005 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.ui.sourcelookup;
import java.io.IOException;
import java.io.StringReader;
import java.text.MessageFormat;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import org.eclipse.cdt.debug.core.CDebugUtils;
import org.eclipse.cdt.debug.core.ICDTLaunchConfigurationConstants;
import org.eclipse.cdt.debug.core.sourcelookup.ICSourceLocator;
import org.eclipse.cdt.debug.core.sourcelookup.SourceLookupFactory;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.model.IPersistableSourceLocator;
import org.eclipse.debug.core.model.IStackFrame;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Old default source locator. We keep it for migration purposes.
*/
public class OldDefaultSourceLocator implements IPersistableSourceLocator, IAdaptable {
/**
* Identifier for the 'Default C/C++ Source Locator' extension (value <code>"org.eclipse.cdt.debug.ui.DefaultSourceLocator"</code>).
*/
public static final String ID_DEFAULT_SOURCE_LOCATOR = CDebugUIPlugin.getUniqueIdentifier() + ".DefaultSourceLocator"; //$NON-NLS-1$
// to support old configurations
public static final String ID_OLD_DEFAULT_SOURCE_LOCATOR = "org.eclipse.cdt.launch" + ".DefaultSourceLocator"; //$NON-NLS-1$ //$NON-NLS-2$
protected static final String ELEMENT_NAME = "PromptingSourceLocator"; //$NON-NLS-1$
private static final String ATTR_PROJECT = "project"; //$NON-NLS-1$
private static final String ATTR_MEMENTO = "memento"; //$NON-NLS-1$
/**
* Underlying source locator.
*/
private ICSourceLocator fSourceLocator;
public OldDefaultSourceLocator() {
super();
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IPersistableSourceLocator#getMemento()
*/
public String getMemento() throws CoreException {
if ( getCSourceLocator() != null ) {
Document document = null;
Throwable ex = null;
try {
document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
Element element = document.createElement( ELEMENT_NAME );
document.appendChild( element );
element.setAttribute( ATTR_PROJECT, getCSourceLocator().getProject().getName() );
IPersistableSourceLocator psl = getPersistableSourceLocator();
if ( psl != null ) {
element.setAttribute( ATTR_MEMENTO, psl.getMemento() );
}
return CDebugUtils.serializeDocument( document );
}
catch( ParserConfigurationException e ) {
ex = e;
}
catch( IOException e ) {
ex = e;
}
catch( TransformerException e ) {
ex = e;
}
abort( SourceLookupMessages.getString( "OldDefaultSourceLocator.1" ), ex ); //$NON-NLS-1$
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IPersistableSourceLocator#initializeFromMemento(java.lang.String)
*/
public void initializeFromMemento( String memento ) throws CoreException {
Exception ex = null;
try {
Element root = null;
DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
StringReader reader = new StringReader( memento );
InputSource source = new InputSource( reader );
root = parser.parse( source ).getDocumentElement();
if ( !root.getNodeName().equalsIgnoreCase( ELEMENT_NAME ) ) {
abort( SourceLookupMessages.getString( "OldDefaultSourceLocator.2" ), null ); //$NON-NLS-1$
}
String projectName = root.getAttribute( ATTR_PROJECT );
String data = root.getAttribute( ATTR_MEMENTO );
if ( isEmpty( projectName ) ) {
abort( SourceLookupMessages.getString( "OldDefaultSourceLocator.3" ), null ); //$NON-NLS-1$
}
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject( projectName );
if ( getCSourceLocator() == null )
setCSourceLocator( SourceLookupFactory.createSourceLocator( project ) );
if ( getCSourceLocator().getProject() != null && !getCSourceLocator().getProject().equals( project ) )
return;
if ( project == null || !project.exists() || !project.isOpen() )
abort( MessageFormat.format( SourceLookupMessages.getString( "OldDefaultSourceLocator.4" ), new String[]{ projectName } ), null ); //$NON-NLS-1$
IPersistableSourceLocator psl = getPersistableSourceLocator();
if ( psl != null )
psl.initializeFromMemento( data );
else
abort( SourceLookupMessages.getString( "OldDefaultSourceLocator.5" ), null ); //$NON-NLS-1$
return;
}
catch( ParserConfigurationException e ) {
ex = e;
}
catch( SAXException e ) {
ex = e;
}
catch( IOException e ) {
ex = e;
}
abort( SourceLookupMessages.getString( "OldDefaultSourceLocator.6" ), ex ); //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IPersistableSourceLocator#initializeDefaults(org.eclipse.debug.core.ILaunchConfiguration)
*/
public void initializeDefaults( ILaunchConfiguration configuration ) throws CoreException {
setCSourceLocator( SourceLookupFactory.createSourceLocator( getProject( configuration ) ) );
String memento = configuration.getAttribute( ILaunchConfiguration.ATTR_SOURCE_LOCATOR_MEMENTO, "" ); //$NON-NLS-1$
if ( !isEmpty( memento ) )
initializeFromMemento( memento );
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
*/
public Object getAdapter( Class adapter ) {
if ( getCSourceLocator() instanceof IAdaptable ) {
if ( adapter.equals( ICSourceLocator.class ) ) {
return ((IAdaptable)getCSourceLocator()).getAdapter( adapter );
}
if ( adapter.equals( IResourceChangeListener.class ) ) {
return ((IAdaptable)getCSourceLocator()).getAdapter( adapter );
}
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.ISourceLocator#getSourceElement(org.eclipse.debug.core.model.IStackFrame)
*/
public Object getSourceElement( IStackFrame stackFrame ) {
return null;
}
private ICSourceLocator getCSourceLocator() {
return fSourceLocator;
}
private void setCSourceLocator( ICSourceLocator locator ) {
fSourceLocator = locator;
}
private IPersistableSourceLocator getPersistableSourceLocator() {
ICSourceLocator sl = getCSourceLocator();
return (sl instanceof IPersistableSourceLocator) ? (IPersistableSourceLocator)sl : null;
}
/**
* Throws an internal error exception
*/
private void abort( String message, Throwable e ) throws CoreException {
IStatus s = new Status( IStatus.ERROR, CDebugUIPlugin.getUniqueIdentifier(), 0, message, e );
throw new CoreException( s );
}
private boolean isEmpty( String string ) {
return string == null || string.trim().length() == 0;
}
private IProject getProject( ILaunchConfiguration configuration ) throws CoreException {
String projectName = configuration.getAttribute( ICDTLaunchConfigurationConstants.ATTR_PROJECT_NAME, (String)null );
if ( !isEmpty( projectName ) ) {
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject( projectName );
if ( project.exists() ) {
return project;
}
}
abort( MessageFormat.format( SourceLookupMessages.getString( "OldDefaultSourceLocator.9" ), new String[]{ projectName } ), null ); //$NON-NLS-1$
return null;
}
}
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