/// <exception cref="System.IO.IOException"></exception>
/// <exception cref="NGit.Diff.SimilarityIndex.TableFullException"></exception>
private SimilarityIndex Hash(DiffEntry.Side side, DiffEntry ent)
{
SimilarityIndex r = new SimilarityIndex();
r.Hash(reader.Open(side, ent));
r.Sort();
return(r);
}
/// <exception cref="System.IO.IOException"></exception>
private int CalculateModifyScore(ContentSource.Pair reader, DiffEntry d)
{
try
{
SimilarityIndex src = new SimilarityIndex();
src.Hash(reader.Open(DiffEntry.Side.OLD, d));
src.Sort();
SimilarityIndex dst = new SimilarityIndex();
dst.Hash(reader.Open(DiffEntry.Side.NEW, d));
dst.Sort();
return(src.Score(dst, 100));
}
catch (SimilarityIndex.TableFullException)
{
// If either table overflowed while being constructed, don't allow
// the pair to be broken. Returning 1 higher than breakScore will
// ensure its not similar, but not quite dissimilar enough to break.
//
overRenameLimit = true;
return(breakScore + 1);
}
}
/// <exception cref="System.IO.IOException"></exception>
private byte[] Open(DiffEntry.Side side, DiffEntry entry)
{
if (entry.GetMode(side) == FileMode.MISSING)
{
return(EMPTY);
}
if (entry.GetMode(side).GetObjectType() != Constants.OBJ_BLOB)
{
return(EMPTY);
}
if (IsBinary())
{
return(BINARY);
}
AbbreviatedObjectId id = entry.GetId(side);
if (!id.IsComplete)
{
ICollection <ObjectId> ids = reader.Resolve(id);
if (ids.Count == 1)
{
id = AbbreviatedObjectId.FromObjectId(ids.Iterator().Next());
switch (side)
{
case DiffEntry.Side.OLD:
{
entry.oldId = id;
break;
}
case DiffEntry.Side.NEW:
{
entry.newId = id;
break;
}
}
}
else
{
if (ids.Count == 0)
{
throw new MissingObjectException(id, Constants.OBJ_BLOB);
}
else
{
throw new AmbiguousObjectException(id, ids);
}
}
}
try
{
ObjectLoader ldr = source.Open(side, entry);
return(ldr.GetBytes(binaryFileThreshold));
}
catch (LargeObjectException.ExceedsLimit)
{
return(BINARY);
}
catch (LargeObjectException.ExceedsByteArrayLimit)
{
return(BINARY);
}
catch (LargeObjectException.OutOfMemory)
{
return(BINARY);
}
catch (LargeObjectException tooBig)
{
tooBig.SetObjectId(id.ToObjectId());
throw;
}
}
