com.cisco.surf.jenkow.ide.config.UserLibConfigurator.java Source code

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Here is the source code for com.cisco.surf.jenkow.ide.config.UserLibConfigurator.java

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/*
 * The MIT License
 * 
 * Copyright (c) 2012, Cisco Systems, Inc., Max Spring
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.cisco.surf.jenkow.ide.config;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.ClasspathContainerInitializer;
import org.eclipse.jdt.core.IClasspathContainer;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.core.UserLibrary;
import org.eclipse.jdt.internal.core.UserLibraryManager;

public class UserLibConfigurator {

    public void configure(final String name, final File jarFileOrDir) throws CoreException {

        ClasspathContainerInitializer initializer = JavaCore
                .getClasspathContainerInitializer(JavaCore.USER_LIBRARY_CONTAINER_ID);
        IPath containerPath = new Path(JavaCore.USER_LIBRARY_CONTAINER_ID);
        initializer.requestClasspathContainerUpdate(containerPath.append(name), null,
                getClasspathContainer(name, jarFileOrDir));
    }

    private IClasspathContainer getClasspathContainer(final String name, final File jarFileOrDir)
            throws JavaModelException {
        List<IClasspathEntry> list = new ArrayList<IClasspathEntry>();
        if (isDefined(name)) {
            UserLibrary userLibrary = new UserLibraryManager().getUserLibrary(name);
            Collections.addAll(list, userLibrary.getEntries());
        }
        return createClasspathContainer(name, getClasspathEntries(jarFileOrDir, list));
    }

    private IClasspathContainer createClasspathContainer(final String name, final IClasspathEntry[] entries) {
        return new IClasspathContainer() {
            public IPath getPath() {
                return new Path(JavaCore.USER_LIBRARY_CONTAINER_ID).append(name);
            }

            public int getKind() {
                return K_APPLICATION;
            }

            public String getDescription() {
                return name;
            }

            public IClasspathEntry[] getClasspathEntries() {
                return entries;
            }
        };
    }

    private IClasspathEntry[] getClasspathEntries(File jarFileOrDir, List<IClasspathEntry> entryList) {
        if (jarFileOrDir.isDirectory()) {
            for (File entry : jarFileOrDir.listFiles()) {
                if (entry.isFile()) {
                    addEntryIfNeeded(entryList, entry);
                }
            }
        } else if (jarFileOrDir.exists()) {
            addEntryIfNeeded(entryList, jarFileOrDir);
        }
        return entryList.toArray(new IClasspathEntry[entryList.size()]);
    }

    private void addEntryIfNeeded(List<IClasspathEntry> entryList, File entry) {
        IPath path = new Path(entry.getAbsolutePath());
        if (!hasEntry(entryList, path)) {
            entryList.add(JavaCore.newLibraryEntry(path, null, null));
        }
    }

    private boolean hasEntry(List<IClasspathEntry> list, IPath path) {
        for (IClasspathEntry iClasspathEntry : list) {
            if (iClasspathEntry.getPath().equals(path))
                return true;
        }
        return false;
    }

    public boolean isDefined(String userLib) {
        for (String name : JavaCore.getUserLibraryNames()) {
            if (name.equals(userLib))
                return true;
        }
        return false;
    }
}