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package com.earth2me.essentials.update;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Version implements Comparable<Version>
{
public enum Type
{
STABLE, PREVIEW, DEVELOPER
}
public int getMajor()
{
return major;
}
public int getMinor()
{
return minor;
}
public int getBuild()
{
return build;
}
public Type getType()
{
return type;
}
private final transient int major;
private final transient int minor;
private final transient int build;
private final transient Type type;
public Version(final String versionString)
{
final Matcher matcher = Pattern.compile("(Pre|Dev)?([0-9]+)[_\\.]([0-9]+)[_\\.]([0-9]+).*").matcher(versionString);
if (!matcher.matches() || matcher.groupCount() < 4)
{
type = Type.DEVELOPER;
major = 99;
minor = build = 0;
return;
}
if (versionString.startsWith("Pre"))
{
type = Type.PREVIEW;
}
else if (versionString.startsWith("Dev"))
{
type = Type.DEVELOPER;
}
else
{
type = Type.STABLE;
}
major = Integer.parseInt(matcher.group(2));
minor = Integer.parseInt(matcher.group(3));
build = Integer.parseInt(matcher.group(4));
}
@Override
public int compareTo(final Version other)
{
int ret = 0;
if (other.getType() == Type.DEVELOPER && getType() != Type.DEVELOPER)
{
ret = -1;
}
else if (getType() == Type.DEVELOPER && other.getType() != Type.DEVELOPER)
{
ret = 1;
}
else if (other.getMajor() > getMajor())
{
ret = -1;
}
else if (getMajor() > other.getMajor())
{
ret = 1;
}
else if (other.getMinor() > getMinor())
{
ret = -1;
}
else if (getMinor() > other.getMinor())
{
ret = 1;
}
else if (other.getBuild() > getBuild())
{
ret = -1;
}
else if (getBuild() > other.getBuild())
{
ret = 1;
}
else if (other.getType() == Type.STABLE && getType() == Type.PREVIEW)
{
ret = -1;
}
else if (getType() == Type.STABLE && other.getType() == Type.PREVIEW)
{
ret = 1;
}
return ret;
}
@Override
public boolean equals(final Object obj)
{
if (obj == null)
{
return false;
}
if (getClass() != obj.getClass())
{
return false;
}
final Version other = (Version)obj;
if (this.major != other.major)
{
return false;
}
if (this.minor != other.minor)
{
return false;
}
if (this.build != other.build)
{
return false;
}
if (this.type != other.type)
{
return false;
}
return true;
}
@Override
public int hashCode()
{
int hash = 5;
hash = 71 * hash + this.major;
hash = 71 * hash + this.minor;
hash = 71 * hash + this.build;
hash = 71 * hash + (this.type == null ? 0 : this.type.hashCode());
return hash;
}
@Override
public String toString()
{
final StringBuilder builder = new StringBuilder();
if (type == Type.DEVELOPER)
{
builder.append("Dev");
}
if (type == Type.PREVIEW)
{
builder.append("Pre");
}
builder.append(major);
builder.append('.');
builder.append(minor);
builder.append('.');
builder.append(build);
return builder.toString();
}
}
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