org.summer.dsl.builder.trace.JarEntryAwareTrace.java Source code

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Here is the source code for org.summer.dsl.builder.trace.JarEntryAwareTrace.java

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/*******************************************************************************
 * Copyright (c) 2013 itemis AG (http://www.itemis.eu) 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
 *******************************************************************************/
package org.summer.dsl.builder.trace;

import org.apache.log4j.Logger;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IStorage;
import org.eclipse.emf.common.util.URI;
import org.eclipse.jdt.core.IJarEntryResource;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.xtext.ui.resource.IStorage2UriMapperJdtExtensions;
import org.eclipse.xtext.util.Pair;

import com.google.inject.Inject;

/**
 * @author Sebastian Zarnekow - Initial contribution and API
 */
public class JarEntryAwareTrace implements IStorageAwareTraceContribution {

    private static final Logger log = Logger.getLogger(JarEntryAwareTrace.class);

    @Inject
    private IStorage2UriMapperJdtExtensions uriMapperExtensions;

    public URI tryResolvePath(IStorage localStorage, URI path) {
        if (localStorage instanceof IFile) {
            IProject project = ((IFile) localStorage).getProject();
            if (project != null) {
                IJavaProject javaProject = JavaCore.create(project);
                if (javaProject != null && javaProject.exists())
                    return resolvePath(javaProject, path);
                return null;
            }
        } else if (localStorage instanceof IJarEntryResource) {
            return resolvePath((IJarEntryResource) localStorage, path);
        }
        return null;
    }

    protected URI resolvePath(IJarEntryResource jarEntry, URI path) {
        IPackageFragmentRoot packageFragmentRoot = jarEntry.getPackageFragmentRoot();
        try {
            Pair<URI, URI> pair = uriMapperExtensions.getURIMapping(packageFragmentRoot);
            if (pair != null) {
                URI first = pair.getFirst();
                if (first != null)
                    return URI.createURI(first + "/" + path);
            }
        } catch (JavaModelException e) {
            log.error(e);
        }
        return path;
    }

    protected URI resolvePath(IJavaProject javaProject, URI path) {
        try {
            for (IPackageFragmentRoot root : javaProject.getPackageFragmentRoots())
                if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
                    IResource resource = root.getResource();
                    if (resource instanceof IFolder) {
                        IFolder folder = (IFolder) resource;
                        IResource candidate = folder.findMember(path.toString());
                        if (candidate != null && candidate.exists())
                            return URI.createPlatformResourceURI(resource.getFullPath() + "/" + path, true);
                    }
                }
        } catch (JavaModelException e) {
            log.error(e);
        }
        return null;
    }

}