public override bool Write(ref DirectBuffer directBuf)
{
if (_lexemePos == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(_value.Count);
_lexemePos = 0;
}
for (; _lexemePos < _value.Count; _lexemePos++)
{
if (_writeBuf.WriteSpaceLeft < MaxSingleLexemeBytes)
{
return(false);
}
_writeBuf.WriteString(_value[_lexemePos].Text);
_writeBuf.WriteByte(0);
_writeBuf.WriteInt16(_value[_lexemePos].Count);
for (var i = 0; i < _value[_lexemePos].Count; i++)
{
_writeBuf.WriteInt16(_value[_lexemePos][i]._val);
}
}
return(true);
}
protected override async Task Write(object value, WriteBuffer buf, LengthCache lengthCache, NpgsqlParameter parameter,
bool async, CancellationToken cancellationToken)
{
var vector = (NpgsqlTsVector)value;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(vector.Count);
foreach (var lexeme in vector)
{
if (buf.WriteSpaceLeft < MaxSingleLexemeBytes)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteString(lexeme.Text);
buf.WriteByte(0);
buf.WriteInt16(lexeme.Count);
for (var i = 0; i < lexeme.Count; i++)
{
buf.WriteInt16(lexeme[i].Value);
}
}
}
public override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter)
{
var num = (decimal)(parameter?.ConvertedValue ?? value);
if (num == 0M)
{
buf.WriteInt64(0);
}
else
{
bool negative = num < 0;
if (negative)
{
num = -num;
}
int numGroups, weight, fractionDigits;
GetNumericHeader(num, out numGroups, out weight, out fractionDigits);
buf.WriteInt16(numGroups);
buf.WriteInt16(weight);
buf.WriteInt16(negative ? 0x4000 : 0x0000);
buf.WriteInt16(fractionDigits);
for (int i = 0, pos = weight + 7; i < numGroups; i++, pos--)
{
buf.WriteInt16((ushort)(num / Decimals[pos]));
num %= Decimals[pos];
}
}
}
protected override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter = null)
{
if (parameter?.ConvertedValue != null)
{
value = parameter.ConvertedValue;
}
var bytes = ((Guid)value).ToByteArray();
buf.WriteInt32(BitConverter.ToInt32(bytes, 0));
buf.WriteInt16(BitConverter.ToInt16(bytes, 4));
buf.WriteInt16(BitConverter.ToInt16(bytes, 6));
buf.WriteBytes(bytes, 8, 8);
}
internal void WriteStartup(Dictionary <string, string> parameters)
{
var len = sizeof(int) + // Length
sizeof(int) + // Protocol version
sizeof(byte); // Trailing zero byte
foreach (var kvp in parameters)
{
len += PGUtil.UTF8Encoding.GetByteCount(kvp.Key) + 1 +
PGUtil.UTF8Encoding.GetByteCount(kvp.Value) + 1;
}
// Should really never happen, just in case
if (len > WriteBuffer.Size)
{
throw new Exception("Startup message bigger than buffer");
}
WriteBuffer.WriteInt32(len);
WriteBuffer.WriteInt16(ProtocolVersion.MAJOR);
WriteBuffer.WriteInt16(ProtocolVersion.MINOR);
foreach (var kv in parameters)
{
WriteBuffer.WriteString(kv.Key);
WriteBuffer.WriteByte(0);
WriteBuffer.WriteString(kv.Value);
WriteBuffer.WriteByte(0);
}
WriteBuffer.WriteByte(0);
}
public override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter)
{
if (parameter?.ConvertedValue != null)
{
value = parameter.ConvertedValue;
}
buf.WriteInt16((short)value);
}
internal override async Task Write(WriteBuffer buf, bool async, CancellationToken cancellationToken)
{
Debug.Assert(Statement != null && Statement.All(c => c < 128));
var queryByteLen = _encoding.GetByteCount(Query);
if (buf.WriteSpaceLeft < 1 + 4 + Statement.Length + 1)
{
await buf.Flush(async, cancellationToken);
}
var messageLength =
1 + // Message code
4 + // Length
Statement.Length +
1 + // Null terminator
queryByteLen +
1 + // Null terminator
2 + // Number of parameters
ParameterTypeOIDs.Count * 4;
buf.WriteByte(Code);
buf.WriteInt32(messageLength - 1);
buf.WriteNullTerminatedString(Statement);
await buf.WriteString(Query, queryByteLen, async, cancellationToken);
if (buf.WriteSpaceLeft < 1 + 2)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte(0); // Null terminator for the query
buf.WriteInt16((short)ParameterTypeOIDs.Count);
foreach (var t in ParameterTypeOIDs)
{
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32((int)t);
}
}
internal async Task WriteBind(
List <NpgsqlParameter> parameters,
string portal,
string statement,
bool allResultTypesAreUnknown,
bool[]?unknownResultTypeList,
bool async,
CancellationToken cancellationToken = default)
{
Debug.Assert(statement.All(c => c < 128));
Debug.Assert(portal.All(c => c < 128));
var headerLength =
sizeof(byte) + // Message code
sizeof(int) + // Message length
sizeof(byte) + // Portal is always empty (only a null terminator)
statement.Length + sizeof(byte) + // Statement name plus null terminator
sizeof(ushort); // Number of parameter format codes that follow
if (WriteBuffer.WriteSpaceLeft < headerLength)
{
Debug.Assert(WriteBuffer.Size >= headerLength, "Write buffer too small for Bind header");
await Flush(async, cancellationToken);
}
var formatCodesSum = 0;
var paramsLength = 0;
for (var paramIndex = 0; paramIndex < parameters.Count; paramIndex++)
{
var param = parameters[paramIndex];
formatCodesSum += (int)param.FormatCode;
param.LengthCache?.Rewind();
paramsLength += param.ValidateAndGetLength();
}
var formatCodeListLength = formatCodesSum == 0 ? 0 : formatCodesSum == parameters.Count ? 1 : parameters.Count;
var messageLength = headerLength +
sizeof(short) * formatCodeListLength + // List of format codes
sizeof(short) + // Number of parameters
sizeof(int) * parameters.Count + // Parameter lengths
paramsLength + // Parameter values
sizeof(short) + // Number of result format codes
sizeof(short) * (unknownResultTypeList?.Length ?? 1); // Result format codes
WriteBuffer.WriteByte(FrontendMessageCode.Bind);
WriteBuffer.WriteInt32(messageLength - 1);
Debug.Assert(portal == string.Empty);
WriteBuffer.WriteByte(0); // Portal is always empty
WriteBuffer.WriteNullTerminatedString(statement);
WriteBuffer.WriteInt16(formatCodeListLength);
// 0 length implicitly means all-text, 1 means all-binary, >1 means mix-and-match
if (formatCodeListLength == 1)
{
if (WriteBuffer.WriteSpaceLeft < 2)
{
await Flush(async, cancellationToken);
}
WriteBuffer.WriteInt16((short)FormatCode.Binary);
}
else if (formatCodeListLength > 1)
{
for (var paramIndex = 0; paramIndex < parameters.Count; paramIndex++)
{
if (WriteBuffer.WriteSpaceLeft < 2)
{
await Flush(async, cancellationToken);
}
WriteBuffer.WriteInt16((short)parameters[paramIndex].FormatCode);
}
}
if (WriteBuffer.WriteSpaceLeft < 2)
{
await Flush(async, cancellationToken);
}
WriteBuffer.WriteUInt16((ushort)parameters.Count);
for (var paramIndex = 0; paramIndex < parameters.Count; paramIndex++)
{
var param = parameters[paramIndex];
param.LengthCache?.Rewind();
await param.WriteWithLength(WriteBuffer, async, cancellationToken);
}
if (unknownResultTypeList != null)
{
if (WriteBuffer.WriteSpaceLeft < 2 + unknownResultTypeList.Length * 2)
{
await Flush(async, cancellationToken);
}
WriteBuffer.WriteInt16(unknownResultTypeList.Length);
foreach (var t in unknownResultTypeList)
{
WriteBuffer.WriteInt16(t ? 0 : 1);
}
}
else
{
if (WriteBuffer.WriteSpaceLeft < 4)
{
await Flush(async, cancellationToken);
}
WriteBuffer.WriteInt16(1);
WriteBuffer.WriteInt16(allResultTypesAreUnknown ? 0 : 1);
}
}
internal bool Write(WriteBuffer buf, ref DirectBuffer directBuf)
{
Contract.Requires(Statement != null && Statement.All(c => c < 128));
Contract.Requires(Portal != null && Portal.All(c => c < 128));
switch (_state)
{
case State.Header:
var formatCodesSum = InputParameters.Select(p => p.FormatCode).Sum(c => (int)c);
_formatCodeListLength = formatCodesSum == 0 ? 0 : formatCodesSum == InputParameters.Count ? 1 : InputParameters.Count;
var headerLength =
1 + // Message code
4 + // Message length
Portal.Length + 1 +
Statement.Length + 1 +
2; // Number of parameter format codes that follow
if (buf.WriteSpaceLeft < headerLength)
{
Contract.Assume(buf.Size >= headerLength, "Buffer too small for Bind header");
return(false);
}
foreach (var c in InputParameters.Select(p => p.LengthCache).Where(c => c != null))
{
c.Rewind();
}
var messageLength = headerLength +
2 * _formatCodeListLength + // List of format codes
2 + // Number of parameters
4 * InputParameters.Count + // Parameter lengths
InputParameters.Select(p => p.ValidateAndGetLength()).Sum() + // Parameter values
2 + // Number of result format codes
2 * (UnknownResultTypeList?.Length ?? 1); // Result format codes
buf.WriteByte(Code);
buf.WriteInt32(messageLength - 1);
buf.WriteBytesNullTerminated(Encoding.ASCII.GetBytes(Portal));
buf.WriteBytesNullTerminated(Encoding.ASCII.GetBytes(Statement));
buf.WriteInt16(_formatCodeListLength);
_paramIndex = 0;
_state = State.ParameterFormatCodes;
goto case State.ParameterFormatCodes;
case State.ParameterFormatCodes:
// 0 length implicitly means all-text, 1 means all-binary, >1 means mix-and-match
if (_formatCodeListLength == 1)
{
if (buf.WriteSpaceLeft < 2)
{
return(false);
}
buf.WriteInt16((short)FormatCode.Binary);
}
else if (_formatCodeListLength > 1)
{
for (; _paramIndex < InputParameters.Count; _paramIndex++)
{
if (buf.WriteSpaceLeft < 2)
{
return(false);
}
buf.WriteInt16((short)InputParameters[_paramIndex].FormatCode);
}
}
if (buf.WriteSpaceLeft < 2)
{
return(false);
}
buf.WriteInt16(InputParameters.Count);
_paramIndex = 0;
_state = State.ParameterValues;
goto case State.ParameterValues;
case State.ParameterValues:
if (!WriteParameters(buf, ref directBuf))
{
return(false);
}
_state = State.ResultFormatCodes;
goto case State.ResultFormatCodes;
case State.ResultFormatCodes:
if (UnknownResultTypeList != null)
{
if (buf.WriteSpaceLeft < 2 + UnknownResultTypeList.Length * 2)
{
return(false);
}
buf.WriteInt16(UnknownResultTypeList.Length);
foreach (var t in UnknownResultTypeList)
{
buf.WriteInt16(t ? 0 : 1);
}
}
else
{
if (buf.WriteSpaceLeft < 4)
{
return(false);
}
buf.WriteInt16(1);
buf.WriteInt16(AllResultTypesAreUnknown ? 0 : 1);
}
_state = State.Done;
return(true);
default:
throw PGUtil.ThrowIfReached();
}
}
internal bool Write(WriteBuffer buf, ref DirectBuffer directBuf)
{
Contract.Requires(Statement != null && Statement.All(c => c < 128));
Contract.Requires(Portal != null && Portal.All(c => c < 128));
switch (_state)
{
case State.Header:
var formatCodesSum = InputParameters.Select(p => p.FormatCode).Sum(c => (int)c);
_formatCodeListLength = formatCodesSum == 0 ? 0 : formatCodesSum == InputParameters.Count ? 1 : InputParameters.Count;
var headerLength =
1 + // Message code
4 + // Message length
Portal.Length + 1 +
Statement.Length + 1 +
2; // Number of parameter format codes that follow
if (buf.WriteSpaceLeft < headerLength)
{
Contract.Assume(buf.Size >= headerLength, "Buffer too small for Bind header");
return false;
}
foreach (var c in InputParameters.Select(p => p.LengthCache).Where(c => c != null))
c.Rewind();
var messageLength = headerLength +
2 * _formatCodeListLength + // List of format codes
2 + // Number of parameters
4 * InputParameters.Count + // Parameter lengths
InputParameters.Select(p => p.ValidateAndGetLength()).Sum() + // Parameter values
2 + // Number of result format codes
2 * (UnknownResultTypeList?.Length ?? 1); // Result format codes
buf.WriteByte(Code);
buf.WriteInt32(messageLength-1);
buf.WriteBytesNullTerminated(Encoding.ASCII.GetBytes(Portal));
buf.WriteBytesNullTerminated(Encoding.ASCII.GetBytes(Statement));
buf.WriteInt16(_formatCodeListLength);
_paramIndex = 0;
_state = State.ParameterFormatCodes;
goto case State.ParameterFormatCodes;
case State.ParameterFormatCodes:
// 0 length implicitly means all-text, 1 means all-binary, >1 means mix-and-match
if (_formatCodeListLength == 1)
{
if (buf.WriteSpaceLeft < 2)
return false;
buf.WriteInt16((short)FormatCode.Binary);
}
else if (_formatCodeListLength > 1)
for (; _paramIndex < InputParameters.Count; _paramIndex++)
{
if (buf.WriteSpaceLeft < 2)
return false;
buf.WriteInt16((short)InputParameters[_paramIndex].FormatCode);
}
_state = State.ParameterCount;
goto case State.ParameterCount;
case State.ParameterCount:
if (buf.WriteSpaceLeft < 2)
return false;
buf.WriteInt16(InputParameters.Count);
_paramIndex = 0;
_state = State.ParameterValues;
goto case State.ParameterValues;
case State.ParameterValues:
if (!WriteParameters(buf, ref directBuf))
return false;
_state = State.ResultFormatCodes;
goto case State.ResultFormatCodes;
case State.ResultFormatCodes:
if (UnknownResultTypeList != null)
{
if (buf.WriteSpaceLeft < 2 + UnknownResultTypeList.Length * 2)
return false;
buf.WriteInt16(UnknownResultTypeList.Length);
foreach (var t in UnknownResultTypeList)
buf.WriteInt16(t ? 0 : 1);
}
else
{
if (buf.WriteSpaceLeft < 4)
return false;
buf.WriteInt16(1);
buf.WriteInt16(AllResultTypesAreUnknown ? 0 : 1);
}
_state = State.Done;
return true;
default:
throw PGUtil.ThrowIfReached();
}
}
internal override bool Write(WriteBuffer buf)
{
Contract.Requires(Statement != null);
switch (_state)
{
case State.WroteNothing:
_statementNameBytes = Statement.Length == 0 ? PGUtil.EmptyBuffer : _encoding.GetBytes(Statement);
_queryLen = _encoding.GetByteCount(Query);
if (buf.WriteSpaceLeft < 1 + 4 + _statementNameBytes.Length + 1)
{
return(false);
}
var messageLength =
1 + // Message code
4 + // Length
_statementNameBytes.Length +
1 + // Null terminator
_queryLen +
1 + // Null terminator
2 + // Number of parameters
ParameterTypeOIDs.Count * 4;
buf.WriteByte(Code);
buf.WriteInt32(messageLength - 1);
buf.WriteBytesNullTerminated(_statementNameBytes);
goto case State.WroteHeader;
case State.WroteHeader:
_state = State.WroteHeader;
if (_queryLen <= buf.WriteSpaceLeft)
{
buf.WriteString(Query);
goto case State.WroteQuery;
}
if (_queryLen <= buf.Size)
{
// String can fit entirely in an empty buffer. Flush and retry rather than
// going into the partial writing flow below (which requires ToCharArray())
return(false);
}
_queryChars = Query.ToCharArray();
_charPos = 0;
goto case State.WritingQuery;
case State.WritingQuery:
_state = State.WritingQuery;
int charsUsed;
bool completed;
buf.WriteStringChunked(_queryChars, _charPos, _queryChars.Length - _charPos, true,
out charsUsed, out completed);
if (!completed)
{
_charPos += charsUsed;
return(false);
}
goto case State.WroteQuery;
case State.WroteQuery:
_state = State.WroteQuery;
if (buf.WriteSpaceLeft < 1 + 2)
{
return(false);
}
buf.WriteByte(0); // Null terminator for the query
buf.WriteInt16((short)ParameterTypeOIDs.Count);
goto case State.WritingParameterTypes;
case State.WritingParameterTypes:
_state = State.WritingParameterTypes;
for (; _parameterTypePos < ParameterTypeOIDs.Count; _parameterTypePos++)
{
if (buf.WriteSpaceLeft < 4)
{
return(false);
}
buf.WriteInt32((int)ParameterTypeOIDs[_parameterTypePos]);
}
_state = State.WroteAll;
return(true);
default:
throw PGUtil.ThrowIfReached();
}
}
internal override bool Write(WriteBuffer buf)
{
Contract.Requires(Statement != null);
switch (_state)
{
case State.WroteNothing:
_statementNameBytes = Statement.Length == 0 ? PGUtil.EmptyBuffer : _encoding.GetBytes(Statement);
_queryLen = _encoding.GetByteCount(Query);
if (buf.WriteSpaceLeft < 1 + 4 + _statementNameBytes.Length + 1) {
return false;
}
var messageLength =
1 + // Message code
4 + // Length
_statementNameBytes.Length +
1 + // Null terminator
_queryLen +
1 + // Null terminator
2 + // Number of parameters
ParameterTypeOIDs.Count * 4;
buf.WriteByte(Code);
buf.WriteInt32(messageLength - 1);
buf.WriteBytesNullTerminated(_statementNameBytes);
goto case State.WroteHeader;
case State.WroteHeader:
_state = State.WroteHeader;
if (_queryLen <= buf.WriteSpaceLeft) {
buf.WriteString(Query);
goto case State.WroteQuery;
}
if (_queryLen <= buf.Size) {
// String can fit entirely in an empty buffer. Flush and retry rather than
// going into the partial writing flow below (which requires ToCharArray())
return false;
}
_queryChars = Query.ToCharArray();
_charPos = 0;
goto case State.WritingQuery;
case State.WritingQuery:
_state = State.WritingQuery;
int charsUsed;
bool completed;
buf.WriteStringChunked(_queryChars, _charPos, _queryChars.Length - _charPos, true,
out charsUsed, out completed);
if (!completed)
{
_charPos += charsUsed;
return false;
}
goto case State.WroteQuery;
case State.WroteQuery:
_state = State.WroteQuery;
if (buf.WriteSpaceLeft < 1 + 2) {
return false;
}
buf.WriteByte(0); // Null terminator for the query
buf.WriteInt16((short)ParameterTypeOIDs.Count);
goto case State.WritingParameterTypes;
case State.WritingParameterTypes:
_state = State.WritingParameterTypes;
for (; _parameterTypePos < ParameterTypeOIDs.Count; _parameterTypePos++)
{
if (buf.WriteSpaceLeft < 4)
{
return false;
}
buf.WriteInt32((int)ParameterTypeOIDs[_parameterTypePos]);
}
_state = State.WroteAll;
return true;
default:
throw PGUtil.ThrowIfReached();
}
}
internal override async Task Write(WriteBuffer buf, bool async, CancellationToken cancellationToken)
{
Debug.Assert(Statement != null && Statement.All(c => c < 128));
Debug.Assert(Portal != null && Portal.All(c => c < 128));
var headerLength =
1 + // Message code
4 + // Message length
1 + // Portal is always empty (only a null terminator)
Statement.Length + 1 +
2; // Number of parameter format codes that follow
if (buf.WriteSpaceLeft < headerLength)
{
Debug.Assert(buf.Size >= headerLength, "Buffer too small for Bind header");
await buf.Flush(async, cancellationToken);
}
var formatCodesSum = 0;
var paramsLength = 0;
foreach (var p in InputParameters)
{
formatCodesSum += (int)p.FormatCode;
p.LengthCache?.Rewind();
paramsLength += p.ValidateAndGetLength();
}
var formatCodeListLength = formatCodesSum == 0 ? 0 : formatCodesSum == InputParameters.Count ? 1 : InputParameters.Count;
var messageLength = headerLength +
2 * formatCodeListLength + // List of format codes
2 + // Number of parameters
4 * InputParameters.Count + // Parameter lengths
paramsLength + // Parameter values
2 + // Number of result format codes
2 * (UnknownResultTypeList?.Length ?? 1); // Result format codes
buf.WriteByte(Code);
buf.WriteInt32(messageLength - 1);
Debug.Assert(Portal == string.Empty);
buf.WriteByte(0); // Portal is always empty
buf.WriteNullTerminatedString(Statement);
buf.WriteInt16(formatCodeListLength);
// 0 length implicitly means all-text, 1 means all-binary, >1 means mix-and-match
if (formatCodeListLength == 1)
{
if (buf.WriteSpaceLeft < 2)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt16((short)FormatCode.Binary);
}
else if (formatCodeListLength > 1)
{
foreach (NpgsqlParameter p in InputParameters)
{
if (buf.WriteSpaceLeft < 2)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt16((short)p.FormatCode);
}
}
if (buf.WriteSpaceLeft < 2)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt16(InputParameters.Count);
foreach (var param in InputParameters)
{
param.LengthCache?.Rewind();
await param.WriteWithLength(buf, async, cancellationToken);
}
if (UnknownResultTypeList != null)
{
if (buf.WriteSpaceLeft < 2 + UnknownResultTypeList.Length * 2)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt16(UnknownResultTypeList.Length);
foreach (var t in UnknownResultTypeList)
{
buf.WriteInt16(t ? 0 : 1);
}
}
else
{
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt16(1);
buf.WriteInt16(AllResultTypesAreUnknown ? 0 : 1);
}
}