org.polarsys.reqcycle.repository.connector.update.ValidateUriConnector.java Source code

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Here is the source code for org.polarsys.reqcycle.repository.connector.update.ValidateUriConnector.java

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/*******************************************************************************
 *  Copyright (c) 2013, 2014 AtoS 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:
 *  Malick WADE (AtoS) - initial API and implementation and/or initial documentation
 *
 *******************************************************************************/
package org.polarsys.reqcycle.repository.connector.update;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.util.URI;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;

public class ValidateUriConnector {

    private static Set<String> loadExtensions() {
        final IConfigurationElement[] elements = Platform.getExtensionRegistry()
                .getConfigurationElementsFor("org.eclipse.emf.ecore", "extension_parser");
        HashSet<String> set = Sets.newHashSet(
                Iterables.transform(Arrays.asList(elements), new Function<IConfigurationElement, String>() {
                    @Override
                    public String apply(IConfigurationElement arg0) {
                        return arg0.getAttribute("type").toLowerCase();
                    }
                }));
        set.add("xmi");
        return set;
    }

    public static IStatus validateEMFSources(Object value) {
        Set<String> EXTENSIONS = loadExtensions();
        URI uri = URI.createURI((String) value, true);

        String extension = uri.path().substring(uri.path().lastIndexOf(".") + 1, uri.path().length());
        if (EXTENSIONS.contains(extension.toLowerCase())) {
            return Status.OK_STATUS;
        }
        return new Status(IStatus.WARNING, Activator.PLUGIN_ID,
                "extension " + extension + " is not supported. Retry and choose document file");

    }

}