com.l2jfree.versionning.Version.java Source code

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Here is the source code for com.l2jfree.versionning.Version.java

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/*
 * 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.l2jfree.versionning;

import java.io.File;
import java.io.IOException;
import java.util.jar.Attributes;
import java.util.jar.JarFile;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.l2jfree.lang.L2System;

public class Version {
    private String _revisionNumber = "exported";
    private String _versionNumber = "-1";
    private String _buildJdk = "";
    private String _buildTime = "";

    private static final Log _log = LogFactory.getLog(Version.class);

    static {
        L2System.milliTime();
    }

    public Version() {
    }

    public Version(Class<?> c) {
        loadInformation(c);
    }

    public void loadInformation(Class<?> c) {
        File jarName = null;
        try {
            jarName = Locator.getClassSource(c);
            try (JarFile jarFile = new JarFile(jarName);) {
                final Attributes attrs = jarFile.getManifest().getMainAttributes();

                setBuildTime(attrs);

                setBuildJdk(attrs);

                setRevisionNumber(attrs);

                setVersionNumber(attrs);
            }
        } catch (IOException e) {
            if (_log.isErrorEnabled())
                _log.error(
                        "Unable to get Soft information\nFile name '"
                                + (jarName == null ? "null" : jarName.getAbsolutePath()) + "' isn't a valid jar",
                        e);
        }

    }

    /**
     * @param attrs
     */
    private void setVersionNumber(Attributes attrs) {
        String versionNumber = attrs.getValue("Implementation-Version");
        if (versionNumber != null) {
            _versionNumber = versionNumber;
        } else {
            _versionNumber = "-1";
        }
    }

    /**
     * @param attrs
     */
    private void setRevisionNumber(Attributes attrs) {
        String revisionNumber = attrs.getValue("Implementation-Build");
        if (revisionNumber != null) {
            _revisionNumber = revisionNumber;
        } else {
            _revisionNumber = "-1";
        }
    }

    /**
     * @param attrs
     */
    private void setBuildJdk(Attributes attrs) {
        String buildJdk = attrs.getValue("Build-Jdk");
        if (buildJdk != null) {
            _buildJdk = buildJdk;
        } else {
            buildJdk = attrs.getValue("Created-By");
            if (buildJdk != null) {
                _buildJdk = buildJdk;
            } else {
                _buildJdk = "-1";
            }
        }
    }

    /**
     * @param attrs
     */
    private void setBuildTime(Attributes attrs) {
        String buildTime = attrs.getValue("Implementation-Time");
        if (buildTime != null) {
            _buildTime = buildTime;
        } else {
            _buildTime = "1900-01-01";
        }
    }

    public String getRevisionNumber() {
        return _revisionNumber;
    }

    public String getVersionNumber() {
        return _versionNumber;
    }

    public String getBuildJdk() {
        return _buildJdk;
    }

    public String getBuildTime() {
        return _buildTime;
    }
}