Hook up the dispatch framework for the DECRQTSR query.

src/terminal/adapter/ITermDispatch.hpp

@@ -171,6 +171,7 @@ class Microsoft::Console::VirtualTerminal::ITermDispatch
                                       const DispatchTypes::MacroEncoding encoding) = 0; // DECDMAC
     virtual bool InvokeMacro(const VTInt macroId) = 0; // DECINVM
 
+    virtual bool RequestTerminalStateReport(const DispatchTypes::ReportFormat format, const VTParameter formatOption) = 0; // DECRQTSR
     virtual StringHandler RestoreTerminalState(const DispatchTypes::ReportFormat format) = 0; // DECRSTS
 
     virtual StringHandler RequestSetting() = 0; // DECRQSS

src/terminal/adapter/adaptDispatch.cpp

@@ -4166,6 +4166,27 @@ bool AdaptDispatch::InvokeMacro(const VTInt macroId)
     return true;
 }
 
+// Routine Description:
+// - DECRQTSR - Queries the state of the terminal. This can either be a terminal
+//   state report, generally covering all settable state in the terminal (with
+//   the exception of large data items), or a color table report.
+// Arguments:
+// - format - the format of the report being requested.
+// - formatOption - a format-specific option.
+// Return Value:
+// - True if handled successfully. False otherwise.
+bool AdaptDispatch::RequestTerminalStateReport(const DispatchTypes::ReportFormat format, const VTParameter formatOption)
+{
+    switch (format)
+    {
+    case DispatchTypes::ReportFormat::ColorTableReport:
+        _ReportColorTable(formatOption);
+        return true;
+    default:
+        return false;
+    }
+}
+
 // Method Description:
 // - DECRSTS - Restores the terminal state from a stream of data previously
 //   saved with a DECRQTSR query.
@@ -4184,6 +4205,16 @@ ITermDispatch::StringHandler AdaptDispatch::RestoreTerminalState(const DispatchT
     }
 }
 
+// Method Description:
+// - DECCTR - Returns the Color Table Report in response to a DECRQTSR query.
+// Arguments:
+// - colorModel - the color model to use in the report (1 = HLS, 2 = RGB).
+// Return Value:
+// - None
+void AdaptDispatch::_ReportColorTable(const DispatchTypes::ColorModel /*colorModel*/) const
+{
+}
+
 // Method Description:
 // - DECCTR - This is a parser for the Color Table Report received via DECRSTS.
 //   The report contains a list of color definitions separated with a slash

src/terminal/adapter/adaptDispatch.hpp

@@ -174,6 +174,7 @@ namespace Microsoft::Console::VirtualTerminal
                                   const DispatchTypes::MacroEncoding encoding) override; // DECDMAC
         bool InvokeMacro(const VTInt macroId) override; // DECINVM
 
+        bool RequestTerminalStateReport(const DispatchTypes::ReportFormat format, const VTParameter formatOption) override; // DECRQTSR
         StringHandler RestoreTerminalState(const DispatchTypes::ReportFormat format) override; // DECRSTS
 
         StringHandler RequestSetting() override; // DECRQSS
@@ -272,6 +273,7 @@ namespace Microsoft::Console::VirtualTerminal
         void _ClearAllTabStops() noexcept;
         void _InitTabStopsForWidth(const VTInt width);
 
+        void _ReportColorTable(const DispatchTypes::ColorModel colorModel) const;
         StringHandler _RestoreColorTable();
 
         void _ReportSGRSetting() const;

src/terminal/adapter/termDispatch.hpp

@@ -164,6 +164,7 @@ class Microsoft::Console::VirtualTerminal::TermDispatch : public Microsoft::Cons
                               const DispatchTypes::MacroEncoding /*encoding*/) override { return nullptr; } // DECDMAC
     bool InvokeMacro(const VTInt /*macroId*/) override { return false; } // DECINVM
 
+    bool RequestTerminalStateReport(const DispatchTypes::ReportFormat /*format*/, const VTParameter /*formatOption*/) override { return false; } // DECRQTSR
     StringHandler RestoreTerminalState(const DispatchTypes::ReportFormat /*format*/) override { return nullptr; }; // DECRSTS
 
     StringHandler RequestSetting() override { return nullptr; }; // DECRQSS

src/terminal/parser/OutputStateMachineEngine.cpp

@@ -626,6 +626,9 @@ bool OutputStateMachineEngine::ActionCsiDispatch(const VTID id, const VTParamete
     case CsiActionCodes::DECCRA_CopyRectangularArea:
         success = _dispatch->CopyRectangularArea(parameters.at(0), parameters.at(1), parameters.at(2).value_or(0), parameters.at(3).value_or(0), parameters.at(4), parameters.at(5), parameters.at(6), parameters.at(7));
         break;
+    case CsiActionCodes::DECRQTSR_RequestTerminalStateReport:
+        success = _dispatch->RequestTerminalStateReport(parameters.at(0), parameters.at(1));
+        break;
     case CsiActionCodes::DECRQPSR_RequestPresentationStateReport:
         success = _dispatch->RequestPresentationStateReport(parameters.at(0));
         break;

src/terminal/parser/OutputStateMachineEngine.hpp

@@ -154,6 +154,7 @@ namespace Microsoft::Console::VirtualTerminal
             DECRQM_PrivateRequestMode = VTID("?$p"),
             DECCARA_ChangeAttributesRectangularArea = VTID("$r"),
             DECRARA_ReverseAttributesRectangularArea = VTID("$t"),
+            DECRQTSR_RequestTerminalStateReport = VTID("$u"),
             DECCRA_CopyRectangularArea = VTID("$v"),
             DECRQPSR_RequestPresentationStateReport = VTID("$w"),
             DECFRA_FillRectangularArea = VTID("$x"),