org.objectstyle.woproject.maven2.wobootstrap.utils.WebObjectsUtils.java Source code

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Here is the source code for org.objectstyle.woproject.maven2.wobootstrap.utils.WebObjectsUtils.java

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/*
 * ==================================================================== The
 * ObjectStyle Group Software License, Version 1.0 Copyright (c) 2006 The
 * ObjectStyle Group, and individual authors of the software. All rights
 * reserved. Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer. 2. Redistributions in
 * binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other
 * materials provided with the distribution. 3. The end-user documentation
 * included with the redistribution, if any, must include the following
 * acknowlegement: "This product includes software developed by the ObjectStyle
 * Group (http://objectstyle.org/)." Alternately, this acknowlegement may appear
 * in the software itself, if and wherever such third-party acknowlegements
 * normally appear. 4. The names "ObjectStyle Group" and "Cayenne" must not be
 * used to endorse or promote products derived from this software without prior
 * written permission. For written permission, please contact
 * andrus@objectstyle.org. 5. Products derived from this software may not be
 * called "ObjectStyle" nor may "ObjectStyle" appear in their names without
 * prior written permission of the ObjectStyle Group. THIS SOFTWARE IS PROVIDED
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR ITS
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ==================================================================== This
 * software consists of voluntary contributions made by many individuals on
 * behalf of the ObjectStyle Group. For more information on the ObjectStyle
 * Group, please see <http://objectstyle.org/>.
 */
package org.objectstyle.woproject.maven2.wobootstrap.utils;

import java.io.File;
import java.io.IOException;
import java.util.Collection;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.LineIterator;
import org.objectstyle.woproject.maven2.wobootstrap.locator.WebObjectsLocator;

/**
 * This class contains some utility methods that retrieves information about the
 * installed WebObjects.
 * 
 * @author <a href="mailto:hprange@moleque.com.br">Henrique Prange</a>
 * @since 2.0
 */
public class WebObjectsUtils {
    /**
     * Search for WebObjects JARs into the WebObjects lib folder and returns an
     * array of files. It uses a <code>WebObjectsLocator</code> to find the
     * WebObjects lib folder.
     * 
     * @param locator
     *            The WebObjects locator
     * @return Returns an array of WebObjcts JARs or <code>null</code> if
     *         cannot find the libs folder
     */
    public static File[] getWebObjectsJars(WebObjectsLocator locator) {
        if (locator == null) {
            return null;
        }

        File folder = locator.getWebObjectsLibFolder();

        if (folder == null) {
            return null;
        }

        Collection<File> jars = FileUtils.listFiles(folder, new String[] { "jar" }, false);

        File files[] = new File[jars.size()];

        return jars.toArray(files);
    }

    /**
     * Retrieves the version of installed WebObjects. It uses a
     * <code>WebObjectsLocator</code> to find the WebObjects version file.
     * 
     * @param locator
     *            The WebObjects locator
     * @return Returns the WebObjects version or <code>null</code> if cannot
     *         discover the WebObjects version
     */
    public static String getWebObjectsVersion(WebObjectsLocator locator) {
        if (locator == null) {
            return null;
        }

        File versionFile = locator.getWebObjectsVersionFile();

        if (versionFile == null || !versionFile.exists()) {
            return null;
        }

        String version = null;

        LineIterator iterator = null;

        try {
            iterator = FileUtils.lineIterator(versionFile, null);

            while (iterator.hasNext()) {
                String line = iterator.nextLine();

                if ("<key>CFBundleShortVersionString</key>".equals(line.trim())) {
                    String versionLine = iterator.nextLine();

                    version = versionLine.trim().replaceAll("</?string>", "");

                    break;
                }
            }

        } catch (IOException exception) {
            // TODO: hprange, write an info to log instead
            exception.printStackTrace();
        } finally {
            if (iterator != null) {
                LineIterator.closeQuietly(iterator);
            }
        }

        return version;
    }

    /**
     * Avoid <code>WebObjectsUtils</code> instantiation.
     */
    WebObjectsUtils() {
    }
}