*/
private static DirCache createIndex(Repository repo, ObjectId headId,
Collection<ReceiveCommand> commands) throws IOException {
DirCache inCoreIndex = DirCache.newInCore();
DirCacheBuilder dcBuilder = inCoreIndex.builder();
ObjectInserter inserter = repo.newObjectInserter();
long now = System.currentTimeMillis();
Set<String> ignorePaths = new TreeSet<String>();
try {
// add receive commands to the temporary index
for (ReceiveCommand command : commands) {
// use the ref names as the path names
String path = command.getRefName();
ignorePaths.add(path);
StringBuilder change = new StringBuilder();
change.append(command.getType().name()).append(' ');
switch (command.getType()) {
case CREATE:
change.append(ObjectId.zeroId().getName());
change.append(' ');
change.append(command.getNewId().getName());
break;
case UPDATE:
case UPDATE_NONFASTFORWARD:
change.append(command.getOldId().getName());
change.append(' ');
change.append(command.getNewId().getName());
break;
case DELETE:
change = null;
break;
}
if (change == null) {
// ref deleted
continue;
}
String content = change.toString();
// create an index entry for this attachment
final DirCacheEntry dcEntry = new DirCacheEntry(path);
dcEntry.setLength(content.length());
dcEntry.setLastModified(now);
dcEntry.setFileMode(FileMode.REGULAR_FILE);
// insert object
dcEntry.setObjectId(inserter.insert(org.eclipse.jgit.lib.Constants.OBJ_BLOB, content.getBytes("UTF-8")));
// add to temporary in-core index
dcBuilder.add(dcEntry);
}
// Traverse HEAD to add all other paths
TreeWalk treeWalk = new TreeWalk(repo);
int hIdx = -1;
if (headId != null)
hIdx = treeWalk.addTree(new RevWalk(repo).parseTree(headId));
treeWalk.setRecursive(true);
while (treeWalk.next()) {
String path = treeWalk.getPathString();
CanonicalTreeParser hTree = null;
if (hIdx != -1)
hTree = treeWalk.getTree(hIdx, CanonicalTreeParser.class);
if (!ignorePaths.contains(path)) {
// add entries from HEAD for all other paths
if (hTree != null) {
// create a new DirCacheEntry with data retrieved from
// HEAD
final DirCacheEntry dcEntry = new DirCacheEntry(path);
dcEntry.setObjectId(hTree.getEntryObjectId());
dcEntry.setFileMode(hTree.getEntryFileMode());
// add to temporary in-core index
dcBuilder.add(dcEntry);
}
}
}
// release the treewalk
treeWalk.release();
// finish temporary in-core index used for this commit
dcBuilder.finish();
} finally {
inserter.release();
}
return inCoreIndex;
}