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/**
* <copyright> Copyright (c) 2005, 2006, 2007, 2008 Springsite BV (The Netherlands) 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: Martin Taal </copyright> $Id:
* StoreEclipseUtil.java,v 1.2 2007/02/01 12:35:18 mtaal Exp $
*/
package org.eclipse.emf.teneo.eclipse;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.emf.teneo.Constants;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IActionDelegate;
import org.eclipse.ui.PlatformUI;
/**
* Convenience util, for example reads the property file and returns the property file.
*
* @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
* @version $Revision: 1.4 $
*/
public class StoreEclipseUtil {
/** Utility method to handle an error */
public static void handleError(Throwable t, Log log) {
t.printStackTrace(System.err);
log.error(t);
MessageDialog.openError(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
"Error Occured", t.getMessage());
}
/**
* @see IActionDelegate#run(IAction)
*/
public static Properties readPropFile(IStructuredSelection selection) {
final IFile propFile = (IFile) selection.getFirstElement();
final String filePath = propFile.getFullPath().toOSString();
try {
final InputStream is = propFile.getContents();
final Properties props = new Properties();
props.load(is);
is.close();
// check some props
checkProperty(Constants.PROP_NAME, props);
checkProperty(Constants.PROP_EDITOR_EXTENSTION, Constants.PROP_EDITOR_ID, props);
return props;
} catch (IOException e) {
throw new StoreEclipseException("Exception when reading properties from: " + filePath,
e);
} catch (CoreException e) {
throw new StoreEclipseException("Exception when reading properties from: " + filePath,
e);
}
}
/** Checks if the passed value is null, if not then an exception is thrown */
private static void checkProperty(String propName, Properties props) {
if (props.getProperty(propName) == null) {
throw new StoreEclipseException("The ehb file does not contain the property: "
+ propName);
}
}
/** Checks if the passed value is null, if not then an exception is thrown */
private static void checkProperty(String propName1, String propName2, Properties props) {
if (props.getProperty(propName1) == null && props.getProperty(propName2) == null) {
throw new StoreEclipseException("The ehb file must contain one of these properties: "
+ propName1 + "," + propName2);
}
}
}
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