/// <summary>
///
/// </summary>
/// <param name="id">SHA-1 of an object.</param>
/// <returns>
/// A <see cref="ObjectLoader"/> for accessing the data of the named
/// object, or null if the object does not exist.
/// </returns>
public ObjectLoader OpenObject(AnyObjectId id)
{
var wc = new WindowCursor();
try
{
return OpenObject(wc, id);
}
finally
{
wc.Release();
}
}
public override void Materialize(WindowCursor curs)
{
if (CachedBytes != null)
{
return;
}
if (Type != ObjCommit)
{
UnpackedObjectCache.Entry cache = PackFile.readCache(DataOffset);
if (cache != null)
{
curs.Release();
Type = cache.type;
Size = cache.data.Length;
CachedBytes = cache.data;
return;
}
}
try
{
PackedObjectLoader baseLoader = GetBaseLoader(curs);
baseLoader.Materialize(curs);
CachedBytes = BinaryDelta.Apply(baseLoader.CachedBytes, PackFile.decompress(DataOffset, _deltaSize, curs));
curs.Release();
Type = baseLoader.Type;
Size = CachedBytes.Length;
if (Type != ObjCommit)
{
PackFile.saveCache(DataOffset, CachedBytes, Type);
}
}
catch (IOException dfe)
{
throw new CorruptObjectException("object at " + DataOffset + " in "
+ PackFile.File.FullName + " has bad zlib stream", dfe);
}
}
/// <summary>
/// Release the window cursor.
/// </summary>
/// <param name="cursor">cursor to Release; may be null.
/// </param>
/// <returns>always null</returns>
public static WindowCursor Release(WindowCursor cursor)
{
if (cursor != null)
{
cursor.Release();
}
return null;
}
public override void Materialize(WindowCursor curs)
{
if (CachedBytes != null)
{
return;
}
if (Type != ObjCommit)
{
UnpackedObjectCache.Entry cache = PackFile.readCache(DataOffset);
if (cache != null)
{
curs.Release();
CachedBytes = cache.data;
return;
}
}
try
{
CachedBytes = PackFile.decompress(DataOffset, Size, curs);
curs.Release();
if (Type != ObjCommit)
{
PackFile.saveCache(DataOffset, CachedBytes, Type);
}
}
catch (IOException dfe)
{
throw new CorruptObjectException("object at " + DataOffset + " in "
+ PackFile.File.FullName + " has bad zlib stream", dfe);
}
}
