private unsafe static int ReadPrefix(
out GitOid out_oid,
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid short_oid,
UIntPtr len)
{
out_oid = default(GitOid);
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
if (odbBackend != null)
{
byte[] oid;
Stream dataStream = null;
GitObjectType objectType;
try
{
// The length of short_oid is described in characters (40 per full ID) vs. bytes (20)
// which is what we care about.
byte[] shortOidArray = new byte[(long)len >> 1];
Array.Copy(short_oid.Id, shortOidArray, shortOidArray.Length);
int toReturn = odbBackend.ReadPrefix(shortOidArray, out oid, out dataStream, out objectType);
if (0 == toReturn)
{
// Caller is expected to give us back a stream created with the Allocate() method.
UnmanagedMemoryStream memoryStream = dataStream as UnmanagedMemoryStream;
if (null == memoryStream)
{
return((int)GitErrorCode.Error);
}
out_oid.Id = oid;
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType;
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
return(toReturn);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
}
return((int)GitErrorCode.Error);
}
private unsafe static int ReadPrefix(
out GitOid out_oid,
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid short_oid,
UIntPtr len)
{
out_oid = default(GitOid);
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return((int)GitErrorCode.Error);
}
Stream dataStream = null;
try
{
var shortSha = ObjectId.ToString(short_oid.Id, (int)len);
ObjectId oid;
ObjectType objectType;
int toReturn = odbBackend.ReadPrefix(shortSha, out oid, out dataStream, out objectType);
if (toReturn != 0)
{
return(toReturn);
}
// Caller is expected to give us back a stream created with the Allocate() method.
var memoryStream = dataStream as UnmanagedMemoryStream;
if (memoryStream == null)
{
return((int)GitErrorCode.Error);
}
out_oid.Id = oid.RawId;
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return((int)GitErrorCode.Error);
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
return((int)GitErrorCode.Ok);
}
private unsafe static int ReadPrefix(
out GitOid out_oid,
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid short_oid,
UIntPtr len)
{
out_oid = default(GitOid);
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return((int)GitErrorCode.Error);
}
Stream dataStream = null;
try
{
// The length of short_oid is described in characters (40 per full ID) vs. bytes (20)
// which is what we care about.
var oidLen = (int)len;
// Ensure we allocate enough space to cope with odd-sized prefix
int arraySize = (oidLen + 1) >> 1;
var shortOidArray = new byte[arraySize];
Array.Copy(short_oid.Id, shortOidArray, arraySize);
byte[] oid;
ObjectType objectType;
int toReturn = odbBackend.ReadPrefix(shortOidArray, oidLen, out oid, out dataStream, out objectType);
if (toReturn != 0)
{
return(toReturn);
}
// Caller is expected to give us back a stream created with the Allocate() method.
var memoryStream = dataStream as UnmanagedMemoryStream;
if (memoryStream == null)
{
return((int)GitErrorCode.Error);
}
out_oid.Id = oid;
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return((int)GitErrorCode.Error);
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
return((int)GitErrorCode.Ok);
}