org.apache.felix.bundlerepository/src/main/java/org/apache/felix/bundlerepository/VersionRange.java

/*
 *   Copyright 2006 The Apache Software Foundation
 *
 *   Licensed 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.felix.bundlerepository;

import org.osgi.framework.Version;

public class VersionRange
{
    private Version m_low = null;
    private boolean m_isLowInclusive = false;
    private Version m_high = null;
    private boolean m_isHighInclusive = false;

    public VersionRange(Version low, boolean isLowInclusive,
        Version high, boolean isHighInclusive)
    {
        m_low = low;
        m_isLowInclusive = isLowInclusive;
        m_high = high;
        m_isHighInclusive = isHighInclusive;
    }

    public Version getLow()
    {
        return m_low;
    }

    public boolean isLowInclusive()
    {
        return m_isLowInclusive;
    }

    public Version getHigh()
    {
        return m_high;
    }

    public boolean isHighInclusive()
    {
        return m_isHighInclusive;
    }

    public boolean isInRange(Version version)
    {
        // We might not have an upper end to the range.
        if (m_high == null)
        {
            return (version.compareTo(m_low) >= 0);
        }
        else if (isLowInclusive() && isHighInclusive())
        {
            return (version.compareTo(m_low) >= 0) && (version.compareTo(m_high) <= 0);
        }
        else if (isHighInclusive())
        {
            return (version.compareTo(m_low) > 0) && (version.compareTo(m_high) <= 0);
        }
        else if (isLowInclusive())
        {
            return (version.compareTo(m_low) >= 0) && (version.compareTo(m_high) < 0);
        }
        return (version.compareTo(m_low) > 0) && (version.compareTo(m_high) < 0);
    }

    public static VersionRange parse(String range)
    {
        // Check if the version is an interval.
        if (range.indexOf(',') >= 0)
        {
            String s = range.substring(1, range.length() - 1);
            String vlo = s.substring(0, s.indexOf(','));
            String vhi = s.substring(s.indexOf(',') + 1, s.length());
            return new VersionRange (
                new Version(vlo), (range.charAt(0) == '['),
                new Version(vhi), (range.charAt(range.length() - 1) == ']'));
        }
        else
        {
            return new VersionRange(new Version(range), true, null, false);
        }
    }
}