/*
 * Version.java
 *
 * Created on March 12, 1999
 *
 * Modification Log:
 * 1.01 18th Mar 1999 Tanmay Throws IOexception instead of Exception
 * 1.02 29th May 1999 Tanmay Added methods to get/set and verify the values
 * 1.03 12th Jun 1999 Tanmay Method to get text summary added.
 *-----------------------------------------------------------------------------------------
 * 10th Sep 2003 Tanmay Moved to SourceForge (http://classeditor.sourceforge.net)
 *-----------------------------------------------------------------------------------------
 * 1.04 28th Sep 2003 Tanmay Moved text summary method to visitor.
 * 1.05 21st Mar 2004 Tanmay New method getMagicNumberInteger added for XML output
 *
 */


package classfile;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Vector;

/**
 * Class to handle version information.
 * <br><br>
 *
 * @author 	 Tanmay K. Mohapatra
 * @version 1.05, 21st Mar, 2004
 */

public final class Version {
 int iMagicNumber;
 int iMinorVersion;
 int iMajorVersion;
 
 void read(DataInputStream dis) throws IOException {
 iMagicNumber = dis.readInt();
 iMinorVersion = dis.readUnsignedShort();
 iMajorVersion = dis.readUnsignedShort();
 }
 
 void write(DataOutputStream dos) throws IOException {
 dos.writeInt(iMagicNumber);
 dos.writeShort(iMinorVersion);
 dos.writeShort(iMajorVersion);
 }
 
 public boolean verify(Vector vectVerifyErrors) {
 boolean bRet = true;
 
 if (0xcafebabe != iMagicNumber) {
 vectVerifyErrors.addElement("Magic number should be CAFEBABE.");
 bRet = false;
 }
 if (45 != iMajorVersion) {
 vectVerifyErrors.addElement("Major version should be 45.");
 bRet = false;
 }
 if (3 != iMinorVersion) {
 vectVerifyErrors.addElement("Minor version should be 3.");
 bRet = false;
 }
 return bRet;
 }
 
 public String toString() {
 String sRetStr;
 
 sRetStr = ("Magic number: " + getMagicNumberString() + ", ");
 sRetStr += ("Minor version: " + iMinorVersion + ", ");
 sRetStr += ("Major version: " + iMajorVersion + ", ");
 
 return sRetStr;
 }
 
 public int getMagicNumberInteger() {
 return iMagicNumber;
 }
 
 public String getMagicNumberString() {
 return (Integer.toHexString(iMagicNumber));
 }
 
 public void setMagicNumberString(String sMagicNumber) {
 iMagicNumber = Long.valueOf(sMagicNumber, 16).intValue();
 }
 
 public String getMajorVersionString() {
 return Integer.toString(iMajorVersion);
 }
 
 public String getMinorVersionString() {
 return Integer.toString(iMinorVersion);
 }
 
 public void setMajorVersionString(String sVer) {
 iMajorVersion = Integer.parseInt(sVer);
 }
 
 public void setMinorVersionString(String sVer) {
 iMinorVersion = Integer.parseInt(sVer);
 }
}