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package it.uniroma2.art.sheet2rdf.utils;

/**
 * Copied from it.uniroma2.art.semanticturkey.resources.VersionNumber
 * Used to keep trace of the version in StatusHandler
 */
public class VersionNumber implements Comparable {

    private int major;
    private int minor;
    private int revision;
    private boolean snapshot;

    public VersionNumber(int major) {
        this(major, 0, 0);
    }

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

    public VersionNumber(int major, int minor, int revision) {
        this(major, minor, revision, false);
    }

    public VersionNumber(int major, int minor, int revision, boolean snapshot) {
        this.major = major;
        this.minor = minor;
        this.revision = revision;
        this.snapshot = snapshot;
    }

    public VersionNumber(String versionCode) {
        // if null all values are = 0
        if (versionCode != null) {
            if (versionCode.contains("-SNAPSHOT")) {
                snapshot = true;
                versionCode = versionCode.replace("-SNAPSHOT", "");
            }
            String[] codes = versionCode.split("\\.");
            int nums = codes.length;
            if (nums > 0)
                major = parseNumber(codes[0]);
            if (nums > 1)
                minor = parseNumber(codes[1]);
            if (nums > 2)
                revision = parseNumber(codes[2]);
        }
    }

    private int parseNumber(String number) {
        try {
            return Integer.parseInt(number);
        } catch (Exception e) {
            return 0;
        }
    }

    public void setMajor(int major) {
        this.major = major;
    }

    public int getMajor() {
        return major;
    }

    public void setMinor(int minor) {
        this.minor = minor;
    }

    public int getMinor() {
        return minor;
    }

    public void setRevision(int revision) {
        this.revision = revision;
    }

    public int getRevision() {
        return revision;
    }

    public void setSnapshot(boolean snapshot) {
        this.snapshot = snapshot;
    }

    public boolean isSnapshot() {
        return snapshot;
    }

    public String toString() {
        String v = major + "." + minor + "." + revision;
        if (snapshot) {
            v += "-SNAPSHOT";
        }
        return v;
    }

    public int compareTo(VersionNumber o) {
        int majorCompare = this.getMajor() - o.getMajor();
        if (majorCompare != 0) {
            return majorCompare;
        }
        int minorCompare = this.getMinor() - o.getMinor();
        if (minorCompare != 0) {
            return minorCompare;
        }
        int revisionCompare = this.getRevision() - o.getRevision();
        if (revisionCompare != 0) {
            return revisionCompare;
        }
        if (this.isSnapshot() && o.isSnapshot() || !this.isSnapshot() && !o.isSnapshot()) {
            return 0;
        } else if (this.isSnapshot() && !o.isSnapshot()) {
            return -1;
        } else {
            return 1;
        }
    }

    public boolean equals(VersionNumber o) {
        return this.compareTo(o) == 0;
    }


    public static void main(String[] args) {
        VersionNumber vn = new VersionNumber("0.11-SNAPSHOT");
        System.out.println(vn);
    }

}