com.adobe.granite.crx2oak.util.ExtensionInfo Maven / Gradle / Ivy

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package com.adobe.granite.crx2oak.util;

import com.adobe.granite.crx2oak.CRX2Oak;

import java.io.File;

/**
 * The quickstart extension info this application generic model.
 */
public class ExtensionInfo {

    private static final String JAR_NAME;
    private static final String JAR_PATH;
    private static final JarFile JAR_FILE;

    static {
        JAR_PATH = CRX2Oak.class.getProtectionDomain().getCodeSource().getLocation().getPath();
        JAR_NAME = JAR_PATH.substring(JAR_PATH.lastIndexOf(File.separator) + 1);
        JarFile jarFile;
        try {
            jarFile = new JarFile(JAR_PATH);
        } catch(RuntimeException e) {
            jarFile = null;
        }
        JAR_FILE = jarFile;
    }

    /**
     * Get the not null JAR FILE extension version.
     *
     * @return the not null version of extension
     */
    public static String getExtensionVersion() {
        return JAR_FILE == null ? "" : JAR_FILE.getVersion();
    }

    /**
     * Get the jar file name.
     *
     * @return not null jar file name including the extension
     */
    public static String getExtensionJarName() {
        return JAR_NAME;
    }

    /**
     * Get the optional checksum of the JAR file.
     *
     * @return not null (possible empty) jar file extension textual checksum
     */
    public static String getExtensionSHA1Checksum() {
        return JAR_FILE == null ? "" : JAR_FILE.getSHA1Checksum();
    }

}