eclipse-sightly-ui/src/org/apache/sling/ide/eclipse/sightly/ui/internal/JavaUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.sling.ide.eclipse.sightly.ui.internal;

import org.apache.sling.ide.eclipse.core.ProjectUtil;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;

public class JavaUtils {

    /**
     * Tries to infer the package for a Sightly Java Use-Object
     * 
     * <p>For instance, for a file placed at <tt>jcr_root/apps/components/my/Script.java</tt> and
     * a content sync root of <tt>jcr_root</tt>, the inferred package will be <tt>apps.components.my</tt></p>
     * 
     * @param fullPath the path where the Use-Object file will be created ( file name excluded )
     * @return the package name, null if none could be inferred
     */
    public static String inferPackage(IPath fullPath) {
        
        IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(fullPath.segment(0));
        
        // we could make this dependency optional if needed, but I don't see a great need right now 
        IFolder contentSyncRoot = ProjectUtil.getSyncDirectory(project);
        if ( contentSyncRoot != null ) {
            return fullPath.makeRelativeTo(contentSyncRoot.getFullPath()).toPortableString().replace('/', '.');
        }
        
        return null;
    }
    
    private JavaUtils() {
        
    }
}