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/**
* @copyright
* ====================================================================
* Copyright (c) 2007 CollabNet. All rights reserved.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://subversion.tigris.org/license-1.html.
* If newer versions of this license are posted there, you may use a
* newer version instead, at your option.
*
* This software consists of voluntary contributions made by many
* individuals. For exact contribution history, see the revision
* history and logs, available at http://subversion.tigris.org/.
* ====================================================================
* @endcopyright
*/
package org.tigris.subversion.javahl;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
/**
* Merge history for a path.
*
* @since 1.5
*/
public class Mergeinfo implements java.io.Serializable
{
// Update the serialVersionUID when there is a incompatible change
// made to this class. See any of the following, depending upon
// the Java release.
// http://java.sun.com/j2se/1.3/docs/guide/serialization/spec/version.doc7.html
// http://java.sun.com/j2se/1.4/pdf/serial-spec.pdf
// http://java.sun.com/j2se/1.5.0/docs/guide/serialization/spec/version.html#6678
// http://java.sun.com/javase/6/docs/platform/serialization/spec/version.html#6678
private static final long serialVersionUID = 1L;
/**
* A mapping of repository-relative paths to a list of revision
* ranges.
*/
private Map mergeSources;
public Mergeinfo()
{
mergeSources = new HashMap();
}
/**
* Create and populate an instance using the contents of the
* svn:mergeinfo property.
* @param mergeinfo svn:mergeinfo property value.
*/
public Mergeinfo(String mergeinfo)
{
this();
this.loadFromMergeinfoProperty(mergeinfo);
}
/**
* Add one or more RevisionRange objects to merge info. If the
* merge source is already stored, the list of revisions is
* replaced.
* @param mergeSrc The merge source URL.
* @param ranges RevisionRange objects to add.
* @throws SubversionException If range list contains objects of
* type other than RevisionRange.
*/
public void addRevisions(String mergeSrc, RevisionRange[] ranges)
{
for (int i = 0; i < ranges.length; i++)
addRevisionRange(mergeSrc, ranges[i]);
}
/**
* Add a revision range to the merged revisions for a path. If
* the merge source already has associated revision ranges, add
* the revision range to the existing list.
* @param mergeSrc The merge source URL.
* @param range The revision range to add.
*/
public void addRevisionRange(String mergeSrc, RevisionRange range)
{
List revisions = this.getRevisions(mergeSrc);
if (revisions == null)
revisions = new ArrayList();
revisions.add(range);
this.setRevisionList(mergeSrc, revisions);
}
/**
* Get the merge source URLs.
* @return The merge source URLs.
*/
public String[] getPaths()
{
Set pathSet = mergeSources.keySet();
if (pathSet == null)
return null;
return (String []) pathSet.toArray(new String[pathSet.size()]);
}
/**
* Get the revision ranges for the specified merge source URL.
* @param mergeSrc The merge source URL, or null.
* @return List of RevisionRange objects, or null.
*/
public List getRevisions(String mergeSrc)
{
if (mergeSrc == null)
return null;
return (List) mergeSources.get(mergeSrc);
}
/**
* Get the RevisionRange objects for the specified merge source URL
* @param mergeSrc The merge source URL, or null.
* @return Array of RevisionRange objects, or null.
*/
public RevisionRange[] getRevisionRange(String mergeSrc)
{
List revisions = this.getRevisions(mergeSrc);
if (revisions == null)
return null;
return (RevisionRange [])
revisions.toArray(new RevisionRange[revisions.size()]);
}
/**
* Parse the svn:mergeinfo property to populate the
* merge source URLs and revision ranges of this instance.
* @param mergeinfo svn:mergeinfo property value.
*/
public void loadFromMergeinfoProperty(String mergeinfo)
{
if (mergeinfo == null)
return;
StringTokenizer st = new StringTokenizer(mergeinfo, "\n");
while (st.hasMoreTokens())
{
parseMergeinfoLine(st.nextToken());
}
}
/**
* Parse a merge source line from a svn:mergeinfo
* property value (e.g.
* "/trunk:1-100,104,108,110-115").
*
* @param line A line of merge info for a single merge source.
*/
private void parseMergeinfoLine(String line)
{
int colon = line.indexOf(':');
if (colon > 0)
{
String pathElement = line.substring(0, colon);
String revisions = line.substring(colon + 1);
parseRevisions(pathElement, revisions);
}
}
/**
* Parse the revisions in a merge info line into RevisionRange
* objects and adds each of them to the internal Map
* (e.g. "1-100,104,108,110-115")
*
* @param path The merge source path.
* @param revisions A textual representation of the revision ranges.
*/
private void parseRevisions(String path, String revisions)
{
List rangeList = this.getRevisions(path);
StringTokenizer st = new StringTokenizer(revisions, ",");
while (st.hasMoreTokens())
{
String revisionElement = st.nextToken();
RevisionRange range = new RevisionRange(revisionElement);
if (rangeList == null)
rangeList = new ArrayList();
rangeList.add(range);
}
if (rangeList != null)
setRevisionList(path, rangeList);
}
/**
* Add the List object to the map. This method is only
* used internally where we know that List contains a
* type-safe set of RevisionRange objects.
* @param mergeSrc The merge source URL.
* @param range List of RevisionRange objects to add.
*/
private void setRevisionList(String mergeSrc, List range)
{
mergeSources.put(mergeSrc, range);
}
}
