/// <summary>
/// Processing an entry in the context of
/// <see cref="PrescanOneTree()">PrescanOneTree()</see>
/// when only
/// one tree is given
/// </summary>
/// <param name="m">the tree to merge</param>
/// <param name="i">the index</param>
/// <param name="f">the working tree</param>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
internal virtual void ProcessEntry(CanonicalTreeParser m, DirCacheBuildIterator i
, WorkingTreeIterator f)
{
if (m != null)
{
// There is an entry in the merge commit. Means: we want to update
// what's currently in the index and working-tree to that one
if (i == null)
{
// The index entry is missing
if (f != null && !FileMode.TREE.Equals(f.EntryFileMode) && !f.IsEntryIgnored())
{
// don't overwrite an untracked and not ignored file
conflicts.AddItem(walk.PathString);
}
else
{
Update(m.EntryPathString, m.EntryObjectId, m.EntryFileMode);
}
}
else
{
if (f == null || !m.IdEqual(i))
{
// The working tree file is missing or the merge content differs
// from index content
Update(m.EntryPathString, m.EntryObjectId, m.EntryFileMode);
}
else
{
if (i.GetDirCacheEntry() != null)
{
// The index contains a file (and not a folder)
if (f.IsModified(i.GetDirCacheEntry(), true) || i.GetDirCacheEntry().Stage != 0)
{
// The working tree file is dirty or the index contains a
// conflict
Update(m.EntryPathString, m.EntryObjectId, m.EntryFileMode);
}
else
{
Keep(i.GetDirCacheEntry());
}
}
else
{
// The index contains a folder
Keep(i.GetDirCacheEntry());
}
}
}
}
else
{
// There is no entry in the merge commit. Means: we want to delete
// what's currently in the index and working tree
if (f != null)
{
// There is a file/folder for that path in the working tree
if (walk.IsDirectoryFileConflict())
{
conflicts.AddItem(walk.PathString);
}
else
{
// No file/folder conflict exists. All entries are files or
// all entries are folders
if (i != null)
{
// ... and the working tree contained a file or folder
// -> add it to the removed set and remove it from
// conflicts set
Remove(i.EntryPathString);
conflicts.Remove(i.EntryPathString);
}
}
}
else
{
// untracked file, neither contained in tree to merge
// nor in index
// There is no file/folder for that path in the working tree.
// The only entry we have is the index entry. If that entry is a
// conflict simply remove it. Otherwise keep that entry in the
// index
if (i.GetDirCacheEntry().Stage == 0)
{
Keep(i.GetDirCacheEntry());
}
}
}
}
