OSRule.java

package net.minecraftforge.gradle.util.json.version;

import java.util.regex.Pattern;

public class OSRule
{
    public Action action = Action.ALLOW;
    public OSInfo os;

    public class OSInfo
    {
        private OS name;
        private String version;
    }

    public boolean applies()
    {
        if (os == null) return true;
        if (os.name != null && os.name != OS.getCurrentPlatform()) return false;
        if (os.version != null)
        {
            try
            {
                if (!Pattern.compile(os.version).matcher(OS.VERSION).matches())
                {
                    return false;
                }
            }
            catch (Throwable e){}
        }
        return true;
    }
}