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/**
* @copyright
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
* @endcopyright
*/
package org.apache.subversion.javahl.types;
/**
* Object that describes a revision range
*/
public class RevisionRange implements Comparable<RevisionRange>, java.io.Serializable
{
// Update the serialVersionUID when there is a incompatible change made to
// this class. See the java documentation for when a change is incompatible.
// http://java.sun.com/javase/7/docs/platform/serialization/spec/version.html#6678
private static final long serialVersionUID = 2L;
private Revision from;
private Revision to;
private boolean inheritable;
/**
* Creates a new instance. Called by native library.
*/
protected RevisionRange(long from, long to, boolean inheritable)
{
this.from = Revision.getInstance(from);
this.to = Revision.getInstance(to);
this.inheritable = inheritable;
}
/** @since 1.9 */
public RevisionRange(Revision from, Revision to, boolean inheritable)
{
this.from = from;
this.to = to;
this.inheritable = inheritable;
}
public RevisionRange(Revision from, Revision to)
{
this.from = from;
this.to = to;
this.inheritable = true;
}
/**
* Accepts a string in one of these forms: n m-n Parses the results into a
* from and to revision
* @param revisionElement revision range or single revision
*/
public RevisionRange(String revisionElement)
{
super();
if (revisionElement == null)
{
return;
}
this.inheritable = !revisionElement.endsWith("*");
if (!this.inheritable)
revisionElement =
revisionElement.substring(0, revisionElement.length() - 1);
int hyphen = revisionElement.indexOf('-');
if (hyphen > 0)
{
try
{
long fromRev = Long
.parseLong(revisionElement.substring(0, hyphen));
long toRev = Long.parseLong(revisionElement
.substring(hyphen + 1));
this.from = new Revision.Number(fromRev);
this.to = new Revision.Number(toRev);
}
catch (NumberFormatException e)
{
return;
}
}
else
{
try
{
long revNum = Long.parseLong(revisionElement.trim());
if (revNum <= 0)
return;
this.to = new Revision.Number(revNum);
this.from = new Revision.Number(revNum - 1);
}
catch (NumberFormatException e)
{
return;
}
}
}
public Revision getFromRevision()
{
return from;
}
public Revision getToRevision()
{
return to;
}
public boolean isInheritable()
{
return inheritable;
}
public String toString()
{
if (from != null && to != null)
{
String rep;
if (from.getKind() == Revision.Kind.number
&& to.getKind() == Revision.Kind.number
&& (((Revision.Number)from).getNumber() + 1
== ((Revision.Number)to).getNumber()))
rep = to.toString();
else if (from.equals(to)) // Such ranges should never happen
rep = from.toString();
else
rep = from.toString() + '-' + to.toString();
if (!inheritable)
return rep + '*';
return rep;
}
return super.toString();
}
public static Long getRevisionAsLong(Revision rev)
{
long val = 0;
if (rev != null && rev instanceof Revision.Number)
{
val = ((Revision.Number) rev).getNumber();
}
return Long.valueOf(val);
}
public int hashCode()
{
final int prime = 31;
int result = (inheritable ? 1 : 2);
result = prime * result + ((from == null) ? 0 : from.hashCode());
result = prime * result + ((to == null) ? 0 : to.hashCode());
return result;
}
/**
* @param range The RevisionRange to compare this object to.
*/
public boolean equals(Object range)
{
if (this == range)
return true;
if (!super.equals(range))
return false;
if (getClass() != range.getClass())
return false;
final RevisionRange other = (RevisionRange) range;
if (from == null)
{
if (other.from != null)
return false;
}
else if (!from.equals(other.from))
{
return false;
}
if (to == null)
{
if (other.to != null)
return false;
}
else if (!to.equals(other.to))
{
return false;
}
return (inheritable == other.inheritable);
}
/**
* <b>Note:</b> Explicitly ignores inheritable state.
*
* @param range The RevisionRange to compare this object to.
*/
public int compareTo(RevisionRange range)
{
if (this == range)
return 0;
Revision other = (range).getFromRevision();
return RevisionRange.getRevisionAsLong(this.getFromRevision())
.compareTo(RevisionRange.getRevisionAsLong(other));
}
}
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