/// <summary>Write (if necessary) this tree to the object store.</summary>
/// <remarks>Write (if necessary) this tree to the object store.</remarks>
/// <param name="cache">the complete cache from DirCache.</param>
/// <param name="cIdx">
/// first position of <code>cache</code> that is a member of this
/// tree. The path of <code>cache[cacheIdx].path</code> for the
/// range <code>[0,pathOff-1)</code> matches the complete path of
/// this tree, from the root of the repository.
/// </param>
/// <param name="pathOffset">
/// number of bytes of <code>cache[cacheIdx].path</code> that
/// matches this tree's path. The value at array position
/// <code>cache[cacheIdx].path[pathOff-1]</code> is always '/' if
/// <code>pathOff</code> is > 0.
/// </param>
/// <param name="ow">the writer to use when serializing to the store.</param>
/// <returns>identity of this tree.</returns>
/// <exception cref="NGit.Errors.UnmergedPathException">
/// one or more paths contain higher-order stages (stage > 0),
/// which cannot be stored in a tree object.
/// </exception>
/// <exception cref="System.IO.IOException">an unexpected error occurred writing to the object store.
/// </exception>
internal virtual ObjectId WriteTree(DirCacheEntry[] cache, int cIdx, int pathOffset
, ObjectInserter ow)
{
if (id == null)
{
int endIdx = cIdx + entrySpan;
TreeFormatter fmt = new TreeFormatter(ComputeSize(cache, cIdx, pathOffset, ow));
int childIdx = 0;
int entryIdx = cIdx;
while (entryIdx < endIdx)
{
DirCacheEntry e = cache[entryIdx];
byte[] ep = e.path;
if (childIdx < childCnt)
{
NGit.Dircache.DirCacheTree st = children[childIdx];
if (st.Contains(ep, pathOffset, ep.Length))
{
fmt.Append(st.encodedName, FileMode.TREE, st.id);
entryIdx += st.entrySpan;
childIdx++;
continue;
}
}
fmt.Append(ep, pathOffset, ep.Length - pathOffset, e.FileMode, e.IdBuffer, e.IdOffset
);
entryIdx++;
}
id = ow.Insert(fmt);
}
return(id);
}
/// <exception cref="NGit.Errors.UnmergedPathException"></exception>
/// <exception cref="System.IO.IOException"></exception>
private int ComputeSize(DirCacheEntry[] cache, int cIdx, int pathOffset, ObjectInserter
ow)
{
int endIdx = cIdx + entrySpan;
int childIdx = 0;
int entryIdx = cIdx;
int size = 0;
while (entryIdx < endIdx)
{
DirCacheEntry e = cache[entryIdx];
if (e.Stage != 0)
{
throw new UnmergedPathException(e);
}
byte[] ep = e.path;
if (childIdx < childCnt)
{
NGit.Dircache.DirCacheTree st = children[childIdx];
if (st.Contains(ep, pathOffset, ep.Length))
{
int stOffset = pathOffset + st.NameLength() + 1;
st.WriteTree(cache, entryIdx, stOffset, ow);
size += TreeFormatter.EntrySize(FileMode.TREE, st.NameLength());
entryIdx += st.entrySpan;
childIdx++;
continue;
}
}
size += TreeFormatter.EntrySize(e.FileMode, ep.Length - pathOffset);
entryIdx++;
}
return(size);
}
private void ParseEntry()
{
currentEntry = cache.GetEntry(ptr);
byte[] cep = currentEntry.path;
if (nextSubtreePos != tree.GetChildCount())
{
DirCacheTree s = tree.GetChild(nextSubtreePos);
if (s.Contains(cep, pathOffset, cep.Length))
{
// The current position is the first file of this subtree.
// Use the subtree instead as the current position.
//
currentSubtree = s;
nextSubtreePos++;
if (s.IsValid())
{
s.GetObjectId().CopyRawTo(subtreeId, 0);
}
mode = FileMode.TREE.GetBits();
path = cep;
pathLen = pathOffset + s.NameLength();
return;
}
}
// The current position is a file/symlink/gitlink so we
// do not have a subtree located here.
//
mode = currentEntry.RawMode;
path = cep;
pathLen = cep.Length;
currentSubtree = null;
}
