org.obeonetwork.dsl.uml2.profile.design.profiletodsl.ManifestTools.java Source code

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Here is the source code for org.obeonetwork.dsl.uml2.profile.design.profiletodsl.ManifestTools.java

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/*******************************************************************************
 * Copyright (c) 2015 Obeo.
 * 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:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.obeonetwork.dsl.uml2.profile.design.profiletodsl;

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

import org.osgi.framework.Constants;
import org.osgi.framework.Version;

import com.google.common.base.Charsets;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.Lists;
import com.google.common.io.Files;

/**
 * @author Mohamed-Lamine BOUKHANOUFA <a
 *         href="mailto:mohamed-lamine.boukhanoufa@obeo.fr">mohamed-lamine.boukhanoufa@obeo.fr</a>
 */
public class ManifestTools {

    private File manifestFile;

    /**
     * Constructor.
     *
     */
    public ManifestTools(File manifestFile_p) {
        manifestFile = manifestFile_p;
    }

    /**
     * Add a given bundle to the require bundle of a manifest file.
     * 
     * @param bundle
     *            the bundle name
     * @return the new manifest file content
     * @throws IOException
     */
    public String addRequireBundle(String bundle) throws IOException {
        return addRequireBundle(bundle, null);
    }

    /**
     * Add a given bundle to the require bundle of a manifest file.
     * 
     * @param bundle
     *            the bundle name
     * @param version
     *            the bundle version, can be <code>null</code>
     * @return the new manifest file content
     * @throws IOException
     */
    public String addRequireBundle(String bundle, Version version) throws IOException {
        String originalContent = Files.toString(manifestFile, Charsets.UTF_8);
        String updatedFileContent = addRequireBundle(bundle, version, originalContent);
        if (!originalContent.equals(updatedFileContent)) {
            Files.write(updatedFileContent, manifestFile, Charsets.UTF_8);
            return updatedFileContent;
        }
        return originalContent;
    }

    /**
     * Add a given bundle to the require bundle of a given content of a manifest file.
     * 
     * @param bundle
     *            the bundle name
     * @param version
     *            the bundle version, can be <code>null</code>
     * @param originalContent
     *            the given content of a manifest file
     * @return a new content.
     */
    public String addRequireBundle(String bundle, Version version, String originalContent) {
        List<String> updatedContent = Lists.newArrayList();
        boolean isRequireBundle = false;
        for (String part : Splitter.on(": ").split(originalContent)) {
            if (isRequireBundle) {

                List<String> requireBundleList = Lists.newArrayList();

                List<String> lines = Lists.newArrayList(Splitter.on("\n").split(part));
                String startOfNextDirective = lines.get(lines.size() - 1);
                lines.remove(lines.size() - 1);
                for (String line : lines) {
                    if (line.endsWith(",")) {
                        requireBundleList.add(line + "\n");
                    } else {
                        requireBundleList.add(line + ",\n");
                    }
                }
                if (version != null) {
                    updatedContent.add(Joiner.on("").join(requireBundleList) + " " + bundle + ";"
                            + Constants.BUNDLE_VERSION_ATTRIBUTE + "=\"" + version + "\"\n" + startOfNextDirective);
                } else {
                    updatedContent.add(
                            Joiner.on("").join(requireBundleList) + " " + bundle + "\n" + startOfNextDirective);
                }
            } else {
                updatedContent.add(part);
            }
            isRequireBundle = part.endsWith(Constants.REQUIRE_BUNDLE);
        }
        String updatedFileContent = Joiner.on(": ").join(updatedContent);
        return updatedFileContent;
    }
}