com.redhat.tools.nexus.maven.plugin.ClasspathUtils.java Source code

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Here is the source code for com.redhat.tools.nexus.maven.plugin.ClasspathUtils.java

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/*
 * Sonatype Application Build Lifecycle
 * Copyright (C) 2009 Sonatype, Inc.                                                                                                                          
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 */
package com.redhat.tools.nexus.maven.plugin;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.IOUtil;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Properties;
import java.util.Set;

/**
 * Utility methods to read and write a mapping document for non-plugin dependency artifacts used in an application
 * plugin.
 * 
 * @author jdcasey
 * 
 */
public final class ClasspathUtils {

    private static final String CP_PROPSFILE = "classpath.properties";

    private ClasspathUtils() {
    }

    public static Properties read(final MavenProject project) throws IOException {
        File cpFile = new File(project.getBuild().getDirectory(), CP_PROPSFILE);
        if (!cpFile.exists()) {
            throw new IOException("Cannot find: " + cpFile + ". Did you call 'generate-metadata'?");
        }

        Properties p = new Properties();
        FileInputStream stream = null;
        try {
            stream = new FileInputStream(cpFile);
            p.load(stream);
        } finally {
            IOUtil.close(stream);
        }

        return p;
    }

    public static void write(final Set<Artifact> classpathArtifacts, final MavenProject project)
            throws IOException {
        Properties p = new Properties();

        for (Artifact artifact : classpathArtifacts) {
            File artifactFile = artifact.getFile();

            StringBuilder fname = new StringBuilder();
            fname.append(artifact.getArtifactId()).append('-').append(artifact.getVersion());

            if (artifact.getClassifier() != null) {
                fname.append('-').append(artifact.getClassifier());
            }

            fname.append('.').append(artifact.getArtifactHandler().getExtension());

            p.setProperty(fname.toString(), artifactFile.getAbsolutePath());
        }

        File cpFile = new File(project.getBuild().getDirectory(), CP_PROPSFILE);
        FileOutputStream stream = null;
        try {
            cpFile.getParentFile().mkdirs();
            stream = new FileOutputStream(cpFile);

            p.store(stream, "Written on: " + new Date());
        } finally {
            IOUtil.close(stream);
        }
    }

}