de.blizzy.documentr.system.Version.java Source code

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Here is the source code for de.blizzy.documentr.system.Version.java

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/*
documentr - Edit, maintain, and present software documentation on the web.
Copyright (C) 2012-2013 Maik Schreiber
    
This program 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 3 of the License, or
(at your option) any later version.
    
This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package de.blizzy.documentr.system;

import lombok.AccessLevel;
import lombok.EqualsAndHashCode;
import lombok.Getter;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.builder.CompareToBuilder;
import org.springframework.util.Assert;

@EqualsAndHashCode
class Version implements Comparable<Version> {
    @Getter(AccessLevel.PACKAGE)
    private int major;
    @Getter(AccessLevel.PACKAGE)
    private int minor;
    @Getter(AccessLevel.PACKAGE)
    private int maintenance;

    private Version(int major, int minor, int maintenance) {
        this.major = major;
        this.minor = minor;
        this.maintenance = maintenance;
    }

    static Version fromString(String s) {
        Assert.isTrue(s.matches("^[0-9]+\\.[0-9]+\\.[0-9]+(-.+)?$")); //$NON-NLS-1$

        s = s.replaceFirst("-.*$", StringUtils.EMPTY); //$NON-NLS-1$
        String[] parts = s.split("\\."); //$NON-NLS-1$
        return new Version(Integer.parseInt(parts[0]), Integer.parseInt(parts[1]), Integer.parseInt(parts[2]));
    }

    @Override
    public int compareTo(Version v) {
        return new CompareToBuilder().append(major, v.major).append(minor, v.minor)
                .append(maintenance, v.maintenance).toComparison();
    }

    @Override
    public String toString() {
        return String.valueOf(major) + "." + String.valueOf(minor) + "." + String.valueOf(maintenance); //$NON-NLS-1$ //$NON-NLS-2$
    }
}