/*
 * Created on Feb 12, 2005
 */
package org.tmatesoft.svn.util;

import org.tmatesoft.svn.core.internal.wc.SVNFileUtil;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * @version 1.0
 * @author TMate Software Ltd.
 */
public class Version {

    private static String PROPERTIES_PATH = "build.properties";

    private static final String VERSION_STRING_PROPERTY = "javasvn.version.string";

    private static final String VERSION_MAJOR_PROPERTY = "javasvn.version.major";

    private static final String VERSION_MINOR_PROPERTY = "javasvn.version.minor";

    private static final String VERSION_MICRO_PROPERTY = "javasvn.version.micro";

    private static final String VERSION_STRING_DEFAULT = "JavaSVN (http://tmate.org/svn/)";

    private static final String VERSION_MAJOR_DEFAULT = "0";

    private static final String VERSION_MINOR_DEFAULT = "0";

    private static final String VERSION_MICRO_DEFAULT = "0";

    private static Properties ourProperties;

    public static String getVersionString() {
        loadProperties();
        return ourProperties.getProperty(VERSION_STRING_PROPERTY,
                VERSION_STRING_DEFAULT);
    }

    public static int getMajorVersion() {
        loadProperties();
        try {
            return Integer.parseInt(ourProperties.getProperty(
                    VERSION_MAJOR_PROPERTY, VERSION_MAJOR_DEFAULT));
        } catch (NumberFormatException nfe) {
            //
        }
        return 0;
    }

    public static int getMinorVersion() {
        loadProperties();
        try {
            return Integer.parseInt(ourProperties.getProperty(
                    VERSION_MINOR_PROPERTY, VERSION_MINOR_DEFAULT));
        } catch (NumberFormatException nfe) {
            //
        }
        return 0;
    }

    public static int getMicroVersion() {
        loadProperties();
        try {
            return Integer.parseInt(ourProperties.getProperty(
                    VERSION_MICRO_PROPERTY, VERSION_MICRO_DEFAULT));
        } catch (NumberFormatException nfe) {
            //
        }
        return 0;
    }

    private static void loadProperties() {
        if (ourProperties != null) {
            return;
        }
        InputStream is = Version.class.getClassLoader().getResourceAsStream(
                PROPERTIES_PATH);
        ourProperties = new Properties();
        if (is == null) {
            return;
        }
        try {
            ourProperties.load(is);
        } catch (IOException e) {
            //
        } finally {
            SVNFileUtil.closeFile(is);
        }

    }
}