de.thischwa.pmcms.tool.ToolVersionInfo.java Source code

Introduction

Here is the source code for de.thischwa.pmcms.tool.ToolVersionInfo.java

Source

/*******************************************************************************
 * Poor Man's CMS (pmcms) - A very basic CMS generating static html pages.
 * http://poormans.sourceforge.net
 * Copyright (C) 2004-2013 by Thilo Schwarz
 * 
 * == BEGIN LICENSE ==
 * 
 * Licensed under the terms of any of the following licenses at your
 * choice:
 * 
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 * 
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 * 
 * == END LICENSE ==
 ******************************************************************************/
package de.thischwa.pmcms.tool;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import org.apache.commons.lang.StringUtils;
import org.apache.velocity.app.Velocity;
import org.dom4j.DocumentFactory;
import org.eclipse.swt.SWT;
import org.springframework.core.SpringVersion;

/**
 * Some static methods to get version infos about the 3rd party tools.
 * 
 * @author Thilo Schwarz
 */
public class ToolVersionInfo {
    public static enum TYPE {
        title, version
    }

    public static Map<TYPE, String> getJava() {
        return generateInfo(Object.class);
    }

    public static Map<TYPE, String> getSpring() {
        return generateInfo(SpringVersion.class);
    }

    public static Map<TYPE, String> getDom4J() {
        return generateInfo(DocumentFactory.class);
    }

    public static Map<TYPE, String> getCKEditor() {
        return getInfoFromMetaPom("de.thischwa.ckeditor", "ckeditor-java");
    }

    public static Map<TYPE, String> getC5Connector() {
        return getInfoFromMetaPom("de.thischwa.c5c", "c5connector-java");
    }

    public static Map<TYPE, String> getVelocity() {
        return generateInfo(Velocity.class);
    }

    public static Map<TYPE, String> getJII() {
        return getInfoFromMetaPom("de.thischwa.jii", "java-image-info");
    }

    public static Map<TYPE, String> getSwt() {
        Map<TYPE, String> info = new HashMap<TYPE, String>(2);
        info.put(TYPE.title, "SWT-" + SWT.getPlatform());
        info.put(TYPE.version, String.valueOf(SWT.getVersion()));
        return info;
    }

    private static Map<TYPE, String> generateInfo(final Class<?> cls) {
        Map<TYPE, String> info = new HashMap<TYPE, String>(2);
        info.put(TYPE.title, StringUtils.defaultIfEmpty(cls.getPackage().getImplementationTitle(), "Unknown"));
        String version = StringUtils.defaultIfEmpty(cls.getPackage().getImplementationVersion(),
                cls.getPackage().getSpecificationVersion());
        info.put(TYPE.version, StringUtils.defaultIfEmpty(version, "n/n"));
        return info;
    }

    private static Map<TYPE, String> getInfoFromMetaPom(final String groupId, final String artifactId) {
        String pomPath = String.format("META-INF/maven/%s/%s/pom.properties", groupId, artifactId);
        Map<TYPE, String> info = new HashMap<TYPE, String>(2);
        info.put(TYPE.title, "unknown");
        info.put(TYPE.version, "n/n");

        InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(pomPath);
        if (in != null) {
            Properties properties = new Properties();
            try {
                in = new BufferedInputStream(in);
                properties.load(in);
            } catch (IOException ex) {
            }

            String title = properties.getProperty("artifactId");
            String version = properties.getProperty("version");
            if (title != null)
                info.put(TYPE.title, title);
            if (version != null)
                info.put(TYPE.version, version);
        }
        return info;
    }
}