Command option extraction for GDB monitor commands

src/DebugServer/CMakeLists.txt

@@ -8,6 +8,7 @@ target_sources(
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/GdbDebugServerConfig.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/Connection.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/DebugSession.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/ResponsePackets/SupportedFeaturesResponse.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/CommandPacket.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/SupportedFeaturesQuery.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/ReadRegisters.cpp
@@ -24,7 +25,6 @@ target_sources(
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/BloomVersionMachine.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/GenerateSvd.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/Detach.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/ResponsePackets/SupportedFeaturesResponse.cpp
 
         # AVR GDB RSP Server
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/AvrGdb/AvrGdbRsp.cpp

src/DebugServer/Gdb/CommandPackets/GenerateSvd.cpp

@@ -23,7 +23,7 @@ namespace Bloom::DebugServer::Gdb::CommandPackets
 
     GenerateSvd::GenerateSvd(Monitor&& monitorPacket)
         : Monitor(std::move(monitorPacket))
-        , sendOutput(this->command.find("--out") != std::string::npos)
+        , sendOutput(this->commandOptions.contains("out"))
     {}
 
     void GenerateSvd::handle(DebugSession& debugSession, TargetControllerConsole&) {

src/DebugServer/Gdb/CommandPackets/Monitor.cpp

@@ -13,18 +13,82 @@ namespace Bloom::DebugServer::Gdb::CommandPackets
     Monitor::Monitor(const RawPacket& rawPacket)
         : CommandPacket(rawPacket)
     {
-        if (this->data.size() > 6) {
-            const auto decodedCommand = Packet::hexToData(
-                std::string(this->data.begin() + 6, this->data.end())
-            );
-
-            this->command = std::string(decodedCommand.begin(), decodedCommand.end());
-            this->command.erase(this->command.find_last_not_of(" ") + 1);
+        if (this->data.size() <= 6) {
+            return;
         }
+
+        const auto decodedCommand = Packet::hexToData(
+            std::string(this->data.begin() + 6, this->data.end())
+        );
+
+        this->command = std::string(decodedCommand.begin(), decodedCommand.end());
+        this->command.erase(this->command.find_last_not_of(" ") + 1);
+
+        this->commandOptions = this->extractCommandOptions(this->command);
     }
 
     void Monitor::handle(DebugSession& debugSession, TargetControllerConsole& targetControllerConsole) {
         Logger::error("Unknown custom GDB command (\"" + this->command + "\") received.");
         debugSession.connection.writePacket(EmptyResponsePacket());
     }
+
+    std::map<std::string, std::optional<std::string>> Monitor::extractCommandOptions(const std::string& command) {
+        auto output = std::map<std::string, std::optional<std::string>>();
+
+        for (std::string::size_type cmdIndex = 1; cmdIndex < command.size(); ++cmdIndex) {
+            const auto cmdChar = command.at(cmdIndex);
+
+            if (cmdChar == '-') {
+                if (command.at(cmdIndex - 1) != '-') {
+                    continue;
+                }
+
+                auto option = std::string();
+                auto optionValue = std::optional<std::string>();
+
+                bool quoted = false;
+
+                auto optIndex = std::string::size_type(0);
+                for (optIndex = cmdIndex + 1; optIndex < command.size(); ++optIndex) {
+                    const auto optChar = command.at(optIndex);
+
+                    if (!option.empty() && ((!quoted && optChar == ' ') || (quoted && optChar == '"'))) {
+                        output.insert(std::pair(option, optionValue));
+
+                        option.clear();
+                        optionValue.reset();
+                        quoted = false;
+
+                        cmdIndex = optIndex;
+                        break;
+                    }
+
+                    if (optionValue.has_value()) {
+                        if (optChar == '"' && !quoted && optionValue->empty()) {
+                            quoted = true;
+                            continue;
+                        }
+
+                        optionValue->push_back(optChar);
+                        continue;
+                    }
+
+                    if (optChar == '=') {
+                        optionValue = std::string();
+                        continue;
+                    }
+
+                    option.push_back(optChar);
+                    continue;
+                }
+
+                if (!option.empty()) {
+                    output.insert(std::pair(option, optionValue));
+                    cmdIndex = optIndex;
+                }
+            }
+        }
+
+        return output;
+    }
 }

src/DebugServer/Gdb/CommandPackets/Monitor.hpp

@@ -1,6 +1,9 @@
 #pragma once
 
 #include <cstdint>
+#include <string>
+#include <map>
+#include <optional>
 
 #include "CommandPacket.hpp"
 
@@ -17,11 +20,29 @@ namespace Bloom::DebugServer::Gdb::CommandPackets
          */
         std::string command;
 
+        /**
+         * A mapping of any command options included in this->command. A command option must begin with "--" and
+         * can optionally have a value.
+         *
+         * The key of this map is the option name. The map value is the option value, or std::nullopt if no value was
+         * provided.
+         */
+        std::map<std::string, std::optional<std::string>> commandOptions;
+
         explicit Monitor(const RawPacket& rawPacket);
 
         void handle(
             DebugSession& debugSession,
             TargetController::TargetControllerConsole& targetControllerConsole
         ) override;
+
+    private:
+        /**
+         * Extracts command options from a command string.
+         *
+         * @param command
+         * @return
+         */
+        std::map<std::string, std::optional<std::string>> extractCommandOptions(const std::string& command);
     };
 }