org.yakindu.sct.generator.builder.efs.ClasspathChanger.java Source code

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Here is the source code for org.yakindu.sct.generator.builder.efs.ClasspathChanger.java

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/**
 * Copyright (c) 2014 committers of YAKINDU 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:
 *    committers of YAKINDU - initial API and implementation
 * 
 */
package org.yakindu.sct.generator.builder.efs;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;

/**
 * Source:
 * http://stackoverflow.com/questions/7993838/programmatically-add-source
 * -folder-from-eclipse-plugin
 * 
 * @author oliver bohl
 * 
 */

public class ClasspathChanger {

    public void addFolderToClassPath(IProject project, String folder) {

        if (!isPartOfClassPath(project, folder)) {
            IJavaProject javaProject = JavaCore.create(project);
            IClasspathEntry[] entries = null;

            try {
                entries = javaProject.getRawClasspath();
            } catch (JavaModelException e) {
                e.printStackTrace();
            }

            IClasspathEntry[] newEntries = new IClasspathEntry[entries.length + 1];
            System.arraycopy(entries, 0, newEntries, 0, entries.length);

            IPath srcPath = javaProject.getPath().append(folder);
            IClasspathEntry srcEntry = JavaCore.newSourceEntry(srcPath, null);

            newEntries[entries.length] = JavaCore.newSourceEntry(srcEntry.getPath());

            try {
                javaProject.setRawClasspath(newEntries, null);
            } catch (JavaModelException e) {
                e.printStackTrace();
            }
        }
    }

    public boolean isPartOfClassPath(IProject project, String folder) {

        IJavaProject javaProject = JavaCore.create(project);
        IClasspathEntry[] entries = null;

        try {
            entries = javaProject.getRawClasspath();
        } catch (JavaModelException e) {
            e.printStackTrace();
        }

        for (IClasspathEntry entry : entries) {
            String projectString = "/" + project.getName() + "/" + folder;
            String entryPath = entry.getPath().toString();
            if (projectString.startsWith(entryPath)) {
                return true;
            }
        }
        return false;
    }
}