| /* Version.java -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath 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 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.CORBA; |
| |
| import java.io.IOException; |
| import java.io.Serializable; |
| |
| import org.omg.CORBA.MARSHAL; |
| |
| /** |
| * A version number, represented by the major version number |
| * and the minor version number. |
| * |
| * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) |
| */ |
| public class Version |
| implements Serializable |
| { |
| /** |
| * Use serialVersionUID for interoperability. |
| */ |
| private static final long serialVersionUID = 1; |
| |
| /** |
| * Major number (0..256, so the byte cannot be used). |
| */ |
| public final int major; |
| |
| /** |
| * Minor number. |
| */ |
| public final int minor; |
| |
| /** |
| * Create the version with the given version numbers. |
| * |
| * @param _major major number (0..255) |
| * @param _minor minor number (0..255) |
| */ |
| public Version(int _major, int _minor) |
| { |
| major = (byte) _major; |
| minor = (byte) _minor; |
| } |
| |
| /** |
| * Returns true if the versions are equal. |
| * @param other the other version to compare. |
| * |
| * @return true if the versions are equal |
| */ |
| public boolean equals(java.lang.Object other) |
| { |
| if (other == this) |
| { |
| return true; |
| } |
| if (!(other instanceof Version)) |
| { |
| return false; |
| } |
| |
| Version that = (Version) other; |
| return same(that); |
| } |
| |
| /** |
| * Get the hashcode, higher 8 bits being the major version and lower 8 bits |
| * the minor version. |
| */ |
| public int hashCode() |
| { |
| return major << 8 | minor; |
| } |
| |
| /** |
| * Read from the input stream, major number first. |
| * @param in a stream to read from. |
| */ |
| public static Version read_version(java.io.InputStream in) |
| { |
| try |
| { |
| int major = in.read() & 0xFF; |
| int minor = in.read() & 0xFF; |
| return new Version(major, minor); |
| } |
| catch (IOException ex) |
| { |
| MARSHAL m = new MARSHAL("IOException while reading message header"); |
| m.initCause(ex); |
| m.minor = Minor.Header; |
| throw m; |
| } |
| } |
| |
| /** |
| * Returns true if the versions are the same. |
| * |
| * @param that the other version to compare. |
| * |
| * @return true if the versions are the same. |
| */ |
| public boolean same(Version that) |
| { |
| return major == that.major && minor == that.minor; |
| } |
| |
| /** |
| * Returns true if the given version is higher than |
| * or equals to the version, supplied as parameter |
| * in the form of two integers. |
| * |
| * @param a_major major number of the version to compare. |
| * @param a_minor minor number of the version to compare. |
| * |
| * @return true if this version is higher than or equals to |
| * the version v. |
| */ |
| public boolean since_inclusive(int a_major, int a_minor) |
| { |
| if (major > a_major) |
| return true; |
| else if (major < a_major) |
| return false; |
| else |
| |
| // Major numbers are equal. |
| return minor >= a_minor; |
| } |
| |
| /** |
| * Return the string representation, in the form |
| * major.minor. |
| */ |
| public String toString() |
| { |
| return major + "." + minor; |
| } |
| |
| /** |
| * Returs true if the given version is lower or equal to the |
| * version, specified by the provided minor and major version |
| * number. This means, the version, specified by these two numbers, |
| * should be supported by the current version. |
| * |
| * @param a_major a major version number. |
| * @param a_minor a minor version number. |
| * |
| * @return true if the current version should be supported by the |
| * version, specified by the two passed numbers. |
| */ |
| public boolean until_inclusive(int a_major, int a_minor) |
| { |
| if (major < a_major) |
| return true; |
| else if (major > a_major) |
| return false; |
| else |
| |
| // Major numbers are equal. |
| return minor <= a_minor; |
| } |
| |
| /** |
| * Write into the output stream, major number first. |
| * |
| * @param out a stream to write into. |
| */ |
| public void write(java.io.OutputStream out) |
| { |
| try |
| { |
| out.write(major & 0xFF); |
| out.write(minor & 0xFF); |
| } |
| catch (IOException ex) |
| { |
| MARSHAL m = new MARSHAL("IOException while writing message header"); |
| m.minor = Minor.Header; |
| m.initCause(ex); |
| throw m; |
| } |
| } |
| |
| } |