/// <summary>
/// Try to lookup an object by its <see cref = "ObjectId" /> and <see cref = "GitObjectType" />. If no matching object is found, null will be returned.
/// </summary>
/// <param name = "id">The id to lookup.</param>
/// <param name = "type">The kind of GitObject being looked up</param>
/// <returns>The <see cref = "GitObject" /> or null if it was not found.</returns>
public GitObject Lookup(ObjectId id, GitObjectType type = GitObjectType.Any)
{
Ensure.ArgumentNotNull(id, "id");
GitOid oid = id.Oid;
IntPtr obj;
int res;
if (id is AbbreviatedObjectId)
{
res = NativeMethods.git_object_lookup_prefix(out obj, handle, ref oid, (uint)((AbbreviatedObjectId)id).Length, type);
}
else
{
res = NativeMethods.git_object_lookup(out obj, handle, ref oid, type);
}
if (res == (int)GitErrorCode.GIT_ENOTFOUND || res == (int)GitErrorCode.GIT_EINVALIDTYPE)
{
return(null);
}
Ensure.Success(res);
if (id is AbbreviatedObjectId)
{
id = GitObject.ObjectIdOf(obj);
}
return(GitObject.CreateFromPtr(obj, id, this));
}
internal GitObject LookupInternal(ObjectId id, GitObjectType type, FilePath knownPath)
{
Ensure.ArgumentNotNull(id, "id");
GitOid oid = id.Oid;
GitObjectSafeHandle obj = null;
try
{
int res;
if (id is AbbreviatedObjectId)
{
res = NativeMethods.git_object_lookup_prefix(out obj, handle, ref oid, (uint)((AbbreviatedObjectId)id).Length, type);
}
else
{
res = NativeMethods.git_object_lookup(out obj, handle, ref oid, type);
}
if (res == (int)GitErrorCode.GIT_ENOTFOUND)
{
return(null);
}
Ensure.Success(res);
if (id is AbbreviatedObjectId)
{
id = GitObject.ObjectIdOf(obj);
}
return(GitObject.CreateFromPtr(obj, id, this, knownPath));
}
finally
{
obj.SafeDispose();
}
}
