/**
* Performs all changes collected in this ChangeSet on the input stream and
* streams the result to the output stream. Perform may be called more than once.
*
* This method finishes the stream, no other entries should be added
* after that.
*
* @param in
* the InputStream to perform the changes on
* @param out
* the resulting OutputStream with all modifications
* @throws IOException
* if an read/write error occurs
* @return the results of this operation
*/
public ChangeSetResults perform(ArchiveInputStream inJ, ArchiveOutputStream outJ)
//throws IOException
{
ChangeSetResults results = new ChangeSetResults();
java.util.Set <Change> workingSet = new java.util.LinkedHashSet <Change>(changes);
for (java.util.Iterator <Change> it = workingSet.iterator(); it.hasNext();)
{
Change change = it.next();
if (change.type() == Change.TYPE_ADD && change.isReplaceMode())
{
copyStream(change.getInput(), outJ, change.getEntry());
it.remove();
results.addedFromChangeSet(change.getEntry().getName());
}
}
ArchiveEntry entry = null;
while ((entry = inJ.getNextEntry()) != null)
{
bool copy = true;
for (java.util.Iterator <Change> it = workingSet.iterator(); it.hasNext();)
{
Change change = it.next();
int type = change.type();
String name = entry.getName();
if (type == Change.TYPE_DELETE && name != null)
{
if (name.equals(change.targetFile()))
{
copy = false;
it.remove();
results.deleted(name);
break;
}
}
else if (type == Change.TYPE_DELETE_DIR && name != null)
{
if (name.StartsWith(change.targetFile() + "/"))
{
copy = false;
results.deleted(name);
break;
}
}
}
if (copy)
{
if (!isDeletedLater(workingSet, entry) && !results.hasBeenAdded(entry.getName()))
{
copyStream(inJ, outJ, entry);
results.addedFromStream(entry.getName());
}
}
}
// Adds files which hasn't been added from the original and do not have replace mode on
for (java.util.Iterator <Change> it = workingSet.iterator(); it.hasNext();)
{
Change change = it.next();
if (change.type() == Change.TYPE_ADD &&
!change.isReplaceMode() &&
!results.hasBeenAdded(change.getEntry().getName()))
{
copyStream(change.getInput(), outJ, change.getEntry());
it.remove();
results.addedFromChangeSet(change.getEntry().getName());
}
}
outJ.finish();
return(results);
}