org.apache.sshd.common.util.VersionInfo Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

The newest version!

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sshd.common.util;

import java.io.Serializable;

/**
 * @author Apache MINA SSHD Project
 */
public class VersionInfo implements Serializable, Comparable {
    private static final long serialVersionUID = -9127482432228413836L;

    private final int majorVersion;
    private final int minorVersion;
    private final int release;
    private final int buildNumber;

    public VersionInfo(int major, int minor) {
        this(major, minor, 0, 0);
    }

    public VersionInfo(int major, int minor, int release, int build) {
        this.majorVersion = major;
        this.minorVersion = minor;
        this.release = release;
        this.buildNumber = build;
    }

    public final int getMajorVersion() {
        return majorVersion;
    }

    public final int getMinorVersion() {
        return minorVersion;
    }

    public final int getRelease() {
        return release;
    }

    public final int getBuildNumber() {
        return buildNumber;
    }

    @Override
    public int hashCode() {
        return NumberUtils.hashCode(getMajorVersion(), getMinorVersion(), getRelease(), getBuildNumber());
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (this == obj) {
            return true;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        return compareTo((VersionInfo) obj) == 0;
    }

    @Override
    public int compareTo(VersionInfo o) {
        if (o == null) {
            return -1; // push nulls to end
        }
        if (o == this) {
            return 0;
        }

        int nRes = Integer.compare(getMajorVersion(), o.getMajorVersion());
        if (nRes == 0) {
            nRes = Integer.compare(getMinorVersion(), o.getMinorVersion());
        }
        if (nRes == 0) {
            nRes = Integer.compare(getRelease(), o.getRelease());
        }
        if (nRes == 0) {
            nRes = Integer.compare(getBuildNumber(), o.getBuildNumber());
        }

        return nRes;
    }

    @Override
    public String toString() {
        return NumberUtils.join('.', getMajorVersion(), getMinorVersion(), getRelease(), getBuildNumber());
    }

    /**
     * Parses a version string - assumed to contain at most 4 non-negative components separated by a '.'. If less than 4
     * components are found, then the rest are assumed to be zero. If more than 4 components found, then only the 1st
     * ones are parsed.
     *
     * @param  version                  The version string - ignored if {@code null}/empty
     * @return                          The parsed {@link VersionInfo} - or {@code null} if empty input
     * @throws NumberFormatException    If failed to parse any of the components
     * @throws IllegalArgumentException If any of the parsed components is negative
     */
    public static VersionInfo parse(String version) throws NumberFormatException {
        String[] comps = GenericUtils.split(version, '.');
        if (GenericUtils.isEmpty(comps)) {
            return null;
        }

        int[] values = new int[4];
        int maxValues = Math.min(comps.length, values.length);
        for (int index = 0; index < maxValues; index++) {
            String c = comps[index];
            int v = Integer.parseInt(c);
            ValidateUtils.checkTrue(v >= 0, "Invalid version component in %s", version);
            values[index] = v;
        }

        return new VersionInfo(values[0], values[1], values[2], values[3]);
    }
}