void ReadHeader()
{
_leftToReadInDataMsg = _connector.ReadExpecting <CopyDataMessage>().Length;
var headerLen = NpgsqlRawCopyStream.BinarySignature.Length + 4 + 4;
_buf.Ensure(headerLen);
if (NpgsqlRawCopyStream.BinarySignature.Any(t => _buf.ReadByte() != t))
{
throw new Exception("Invalid COPY binary signature at beginning!");
}
var flags = _buf.ReadInt32();
if (flags != 0)
{
throw new NotSupportedException("Unsupported flags in COPY operation (OID inclusion?)");
}
_buf.ReadInt32(); // Header extensions, currently unused
_leftToReadInDataMsg -= headerLen;
}
internal NpgsqlError(NpgsqlBuffer buf) : this()
{
while (true)
{
var code = (ErrorFieldTypeCode)buf.ReadByte();
switch (code)
{
case ErrorFieldTypeCode.Done:
// Null terminator; error message fully consumed.
return;
case ErrorFieldTypeCode.Severity:
Severity = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Code:
Code = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Message:
Message = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Detail:
Detail = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Hint:
Hint = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Position:
Position = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.InternalPosition:
InternalPosition = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.InternalQuery:
InternalQuery = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Where:
Where = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.File:
File = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Line:
Line = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Routine:
Routine = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.SchemaName:
SchemaName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.TableName:
TableName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.ColumnName:
ColumnName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.DataTypeName:
DataTypeName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.ConstraintName:
ConstraintName = buf.ReadNullTerminatedString();
break;
default:
// Unknown error field; consume and discard.
buf.ReadNullTerminatedString();
break;
}
}
}
internal NpgsqlError(NpgsqlBuffer buf) : this()
{
while (true)
{
var code = (ErrorFieldTypeCode)buf.ReadByte();
switch (code)
{
case ErrorFieldTypeCode.Done:
// Null terminator; error message fully consumed.
return;
case ErrorFieldTypeCode.Severity:
Severity = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Code:
Code = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Message:
Message = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Detail:
Detail = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Hint:
Hint = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Position:
Position = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.InternalPosition:
InternalPosition = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.InternalQuery:
InternalQuery = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Where:
Where = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.File:
File = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Line:
Line = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.Routine:
Routine = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.SchemaName:
SchemaName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.TableName:
TableName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.ColumnName:
ColumnName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.DataTypeName:
DataTypeName = buf.ReadNullTerminatedString();
break;
case ErrorFieldTypeCode.ConstraintName:
ConstraintName = buf.ReadNullTerminatedString();
break;
default:
// Unknown error field; consume and discard.
buf.ReadNullTerminatedString();
break;
}
}
}
