internal static int GetChars(NativeBuffer buffer, int valueOffset, int lengthOffset, MetaType metaType, OracleConnection connection, bool boundAsUCS2, int sourceOffset, char[] destinationBuffer, int destinationOffset, int charCount)
{
bool success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
buffer.DangerousAddRef(ref success);
if (boundAsUCS2)
{
if (!metaType.IsLong)
{
Marshal.Copy(buffer.DangerousGetDataPtrWithBaseOffset(valueOffset + (System.Data.Common.ADP.CharSize * sourceOffset)), destinationBuffer, destinationOffset, charCount);
return(charCount);
}
NativeBuffer_LongColumnData.CopyOutOfLineChars(buffer.ReadIntPtr(valueOffset), sourceOffset, destinationBuffer, destinationOffset, charCount);
return(charCount);
}
string str = MarshalToString(buffer, valueOffset, lengthOffset, metaType, connection, boundAsUCS2, false);
int length = str.Length;
int num = ((sourceOffset + charCount) > length) ? (length - sourceOffset) : charCount;
Buffer.BlockCopy(str.ToCharArray(sourceOffset, num), 0, destinationBuffer, destinationOffset * System.Data.Common.ADP.CharSize, num * System.Data.Common.ADP.CharSize);
charCount = num;
}
finally
{
if (success)
{
buffer.DangerousRelease();
}
}
return(charCount);
}
internal static int GetBytes(NativeBuffer buffer, int valueOffset, MetaType metaType, int sourceOffset, byte[] destinationBuffer, int destinationOffset, int byteCount)
{
if (!metaType.IsLong)
{
buffer.ReadBytes(valueOffset + sourceOffset, destinationBuffer, destinationOffset, byteCount);
return(byteCount);
}
NativeBuffer_LongColumnData.CopyOutOfLineBytes(buffer.ReadIntPtr(valueOffset), sourceOffset, destinationBuffer, destinationOffset, byteCount);
return(byteCount);
}
internal static string MarshalToString(NativeBuffer buffer, int valueOffset, int lengthOffset, MetaType metaType, OracleConnection connection, bool boundAsUCS2, bool outputParameterBinding)
{
string str;
int length = GetLength(buffer, lengthOffset, metaType);
if (boundAsUCS2 && outputParameterBinding)
{
length /= 2;
}
bool flag = metaType.IsLong && !outputParameterBinding;
if (boundAsUCS2)
{
if (flag)
{
byte[] destinationBuffer = new byte[length * System.Data.Common.ADP.CharSize];
NativeBuffer_LongColumnData.CopyOutOfLineBytes(buffer.ReadIntPtr(valueOffset), 0, destinationBuffer, 0, length * System.Data.Common.ADP.CharSize);
str = Encoding.Unicode.GetString(destinationBuffer);
}
else
{
str = buffer.PtrToStringUni(valueOffset, length);
}
}
else
{
byte[] buffer2;
if (flag)
{
buffer2 = new byte[length];
NativeBuffer_LongColumnData.CopyOutOfLineBytes(buffer.ReadIntPtr(valueOffset), 0, buffer2, 0, length);
}
else
{
buffer2 = buffer.ReadBytes(valueOffset, length);
}
str = connection.GetString(buffer2, metaType.UsesNationalCharacterSet);
}
GC.KeepAlive(buffer);
return(str);
}
