/// <summary>
/// build the entire 5250 query response stream. Starting from data stream header
/// and concluding with IAC EOR.
/// </summary>
/// <returns></returns>
public static byte[] BuildQuery5250Response()
{
var ra = new ByteArrayBuilder();
// data stream header.
{
var buf = DataStreamHeader.Build(50, DataStreamOpcode.Noop, 0, 0);
ra.Append(buf);
}
// response header. send the special AID code - 0x88.
{
var buf = ResponseHeader.Build(0, 0, AidKey.Query5250Reply);
ra.Append(buf);
}
// build the 5250 query response.
{
byte byteZero = 0x00;
ra.AppendBigEndianShort(58); // LL. total length of structured field.
ra.Append(new byte[] { 0xd9, 0x70, 0x80 }); // 5250 query response
ra.Append(new byte[] { 0x06, 0x00 }); // control unit code.
ra.Append(new byte[] { 0x01, 0x03, 0x00 }); // code release level.
ra.Append(byteZero.Repeat(16)); // 16 bytes of null
ra.Append(0x01); // 01 - display station
ra.Append("3180002".ToEbcdicBytes()); // machine type and model.
ra.Append(0x02); // keyboard id
ra.Append(0x00); // extended keyboard id
ra.Append(0x00); // reserve
ra.Append(new byte[] { 0x00, 0x61, 0x50, 0x00 }); // device serial number.
ra.AppendBigEndianShort(256); // max number input fields.
ra.Append(0x00); // control unit customization
ra.Append(new byte[] { 0x00, 0x00 }); // reserved
ra.Append(new byte[] { 0x18, 0x11, 0x00, 0x00, 0x00 }); //
ra.Append(byteZero.Repeat(7)); // 7 bytes of null.
}
// update length of response data stream.
{
var wk = new ByteArrayBuilder();
wk.AppendBigEndianShort((short)ra.Length);
ra.CopyToBuffer(wk.ToByteArray(), 0);
}
// IAC EOR
{
ra.Append(EOR_Command.Build());
}
return(ra.ToByteArray());
}
public static byte[] BuildReadScreenResponse(ScreenContent ScreenContent)
{
var ra = new ByteArrayBuilder();
// data stream header.
{
var buf = DataStreamHeader.Build(50, TerminalOpcode.ReadScreen, 0, 0);
ra.Append(buf);
}
// screen regeneration buffer. each byte on the screen.
{
var buf = ScreenContent.GetRegenerationBuffer();
ra.Append(buf);
}
// update length of response data stream.
{
var wk = new ByteArrayBuilder();
wk.AppendBigEndianShort((short)ra.Length);
ra.CopyToBuffer(wk.ToByteArray(), 0);
}
// IAC EOR
{
ra.Append(EOR_Command.Build());
}
return(ra.ToByteArray());
}
public override byte[] ToBytes()
{
var ba = new ByteArrayBuilder();
ba.Append((byte)this.OrderCode.Value);
ba.AppendBigEndianShort(this.MajorLength);
ba.Append(this.ClassByte);
ba.Append(this.TypeByte);
return(ba.ToByteArray());
}
public static byte[] BuildSaveScreenResponse(ScreenContent ScreenContent)
{
var ra = new ByteArrayBuilder();
// data stream header.
{
var buf = DataStreamHeader.Build(50, TerminalOpcode.SaveScreen, 0, 0);
ra.Append(buf);
}
// restore screen workstation command.
{
var cmd = new RestoreScreenCommand();
ra.Append(cmd.ToBytes());
}
// clear unit command.
if (ScreenContent.ScreenDim.GetIsWideScreen( ) == true)
{
var cmd = new ClearUnitAlternateCommand(0x00);
ra.Append(cmd.ToBytes());
}
else
{
var cmd = new ClearUnitCommand();
ra.Append(cmd.ToBytes());
}
// WTD command.
{
var ordersByteStream = ScreenContent.BuildOrderStream( );
var buf = WriteToDisplayCommand.Build(0x00, 0x18, ordersByteStream);
ra.Append(buf);
}
// update length of response data stream.
{
var wk = new ByteArrayBuilder();
wk.AppendBigEndianShort((short)ra.Length);
ra.CopyToBuffer(wk.ToByteArray(), 0);
}
// IAC EOR
{
ra.Append(EOR_Command.Build());
}
return(ra.ToByteArray());
}
public override byte[] ToBytes()
{
var ba = new ByteArrayBuilder();
ba.Append((byte)this.OrderCode.Value);
ba.Append(this.FFW_Bytes);
if (this.FCW_Bytes != null)
{
ba.Append(this.FCW_Bytes);
}
ba.Append(this.AttrByte);
ba.AppendBigEndianShort(this.LL_Length);
return(ba.ToByteArray());
}
/// <summary>
/// build a data stream header. Return byte array containing the header bytes.
/// </summary>
/// <param name="Length"></param>
/// <param name="Opcode"></param>
/// <param name="Flag1"></param>
/// <param name="Flag2"></param>
/// <returns></returns>
public static byte[] Build(
int Length, TerminalOpcode Opcode,
byte Flag1 = 0x00, byte Flag2 = 0x00)
{
var ba = new ByteArrayBuilder();
ba.AppendBigEndianShort((short)Length);
ba.Append(0x12);
ba.Append(0xa0);
ba.Append(new byte[] { 0x00, 0x00 });
ba.Append(0x04);
ba.Append(new byte[] { Flag1, Flag2 });
ba.Append((byte)Opcode);
return(ba.ToByteArray());
}
/// <summary>
/// no longer used. called WorkstationCommandListExt.ProcessAndPaint, which
/// itself is not used.
/// </summary>
/// <param name="VisualItems"></param>
/// <param name="Caret"></param>
/// <returns></returns>
public static byte[] BuildSaveScreenResponse(
ScreenVisualItems VisualItems, CanvasPositionCursor Caret)
{
var ra = new ByteArrayBuilder();
// data stream header.
{
var buf = DataStreamHeader.Build(50, TerminalOpcode.SaveScreen, 0, 0);
ra.Append(buf);
}
// restore screen workstation command.
{
var cmd = new RestoreScreenCommand();
ra.Append(cmd.ToBytes());
}
// clear unit command.
{
var cmd = new ClearUnitCommand();
ra.Append(cmd.ToBytes());
}
// WTD command.
{
var ordersByteStream = VisualItems.BuildOrderStream(Caret);
var buf = WriteToDisplayCommand.Build(0x00, 0x18, ordersByteStream);
ra.Append(buf);
}
// update length of response data stream.
{
var wk = new ByteArrayBuilder();
wk.AppendBigEndianShort((short)ra.Length);
ra.CopyToBuffer(wk.ToByteArray(), 0);
}
// IAC EOR
{
ra.Append(EOR_Command.Build());
}
return(ra.ToByteArray());
}
private byte[] BuildResponseByteStream(
ScreenContent ScreenContent,
AidKey AidKey, OneRowCol CaretRowCol, HowReadScreen?HowRead = null)
{
var ba = new ByteArrayBuilder();
// what to read from the screen.
HowReadScreen howRead = HowReadScreen.ReadAllInput;
if (HowRead != null)
{
howRead = HowRead.Value;
}
{
var buf = DataStreamHeader.Build(99, TerminalOpcode.PutGet);
ba.Append(buf);
}
// location of caret on the canvas.
{
var rowCol = CaretRowCol.ToParentRelative(ScreenContent);
var buf = ResponseHeader.Build(rowCol as OneRowCol, AidKey);
ba.Append(buf);
}
foreach (var dictItem in ScreenContent.FieldDict)
{
ContentField responseField = null;
var contentItem = dictItem.Value;
// process only ContentField.
if (contentItem is ContentField)
{
var contentField = contentItem as ContentField;
responseField = contentField;
}
// only process the first of a continued entry field.
if ((responseField != null) && (responseField is ContinuedContentField))
{
var contContentField = responseField as ContinuedContentField;
if (contContentField.ContinuedFieldSegmentCode != ContinuedFieldSegmentCode.First)
{
responseField = null;
}
}
if ((howRead == HowReadScreen.ReadMdt) &&
(responseField != null) && (responseField.GetModifiedFlag(ScreenContent) == false))
{
responseField = null;
}
if (responseField != null)
{
IRowCol rowCol = responseField.RowCol.ToOneRowCol().AdvanceRight();
{
rowCol = rowCol.ToParentRelative(ScreenContent);
var buf = SetBufferAddressOrder.Build(rowCol as OneRowCol);
ba.Append(buf);
}
{
var buf = TextDataOrder.Build(responseField.GetFieldShowText(ScreenContent));
ba.Append(buf);
}
}
}
// update length of response data stream.
var ra = ba.ToByteArray();
{
var wk = new ByteArrayBuilder();
wk.AppendBigEndianShort((short)ra.Length);
Array.Copy(wk.ToByteArray(), ra, 2);
}
return(ra);
}