org.openxma.dsl.common.jdt.JdtProjectAndClassPathUtils Maven / Gradle / Ivy

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package org.openxma.dsl.common.jdt;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.common.util.WrappedException;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.openxma.dsl.common.DslConstants;

/**
 * @deprecated provides backward compatibilty to the formerly supported (and since version 3.6 deprecated) classpathUri
 *             mechanism
 */
public class JdtProjectAndClassPathUtils {
    public static String RESOURCE_PREFIX = "/resource";

    public static String getNamespace(IResource resource) {
        return getNamespaceInternal(resource);
    }

    public static String getNamespace(URI plattformUri) {
        if (plattformUri.toString().endsWith(DslConstants.STANDARD_LIBRARY)) {
            return DslConstants.STANDARD_LIBRARY_NAMESPACE;
        } else if (plattformUri.toString().endsWith(DslConstants.STANDARD_STYLES)) {
            return DslConstants.STANDARD_STYLES_NAMESPACE;
        } else if (plattformUri.scheme().equals(DslConstants.CLASSPATH_SCHEME)) {
            String classPathUri = plattformUri.toString();
            String packageName = classPathUri.substring(
                    DslConstants.CLASSPATH_SCHEME.length() + 2,
                    classPathUri.indexOf('/', DslConstants.CLASSPATH_SCHEME.length() + 2) != -1 ? classPathUri
                            .lastIndexOf('/') : classPathUri.length()).replace('/', '.');
            return packageName;
        } else if (!plattformUri.isPlatformResource()) {
            throw new RuntimeException("Only platform or classpath scheme uris supported not '" + plattformUri + "'");
        }
        String platformString = plattformUri.toPlatformString(true);
        IResource resource = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(platformString));
        return getNamespaceInternal(resource);
    }

    private static String getNamespaceInternal(IResource resource) {
        IProject project = resource.getProject();
        IJavaProject javaProject = JavaCore.create(project);
        try {
            IPackageFragmentRoot[] packageFragmentRoots = javaProject.getPackageFragmentRoots();
            for (int i = 0; i < packageFragmentRoots.length; i++) {
                IPackageFragmentRoot packageFragmentRoot = packageFragmentRoots[i];
                if (packageFragmentRoot.getKind() == IPackageFragmentRoot.K_SOURCE) {
                    if (packageFragmentRoot.getUnderlyingResource().contains(resource)) {
                        String workspacePath = resource.getFullPath().toString();
                        String packageFragementsPath = workspacePath.substring(packageFragmentRoot.getPath().toString()
                                .length() + 1);
                        int lastIndexOf = packageFragementsPath.lastIndexOf("/");
                        if (lastIndexOf != -1) {
                            return packageFragementsPath.substring(0, lastIndexOf).replace('/', '.');
                        }
                        return "";
                    }
                }
            }
        } catch (Exception exception) {
            throw new WrappedException(exception);
        }
        throw new IllegalStateException("Dsl file '" + resource + "' not found in build path.");
    }

}