Remembering console commands between sessions

CHANGELOG.md

@@ -45,6 +45,7 @@
     Feature #6995: Localize the "show effect duration" option
     Feature #7058: Implement TestModels (T3D) console command
     Feature #7087: Block resolution change in the Windowed Fullscreen mode
+    Feature #7125: Remembering console commands between sessions
     Feature #7130: Ability to set MyGUI logging verbosity
     Feature #7148: Optimize string literal lookup in mwscript
     Task #7117: Replace boost::scoped_array with std::vector

apps/openmw/engine.cpp

@@ -747,7 +747,7 @@ void OMW::Engine::prepareEngine()
 
     mWindowManager = std::make_unique<MWGui::WindowManager>(mWindow, mViewer, guiRoot, mResourceSystem.get(),
         mWorkQueue.get(), mCfgMgr.getLogPath(), mScriptConsoleMode, mTranslationDataStorage, mEncoding,
-        Version::getOpenmwVersionDescription(mResDir), shadersSupported);
+        Version::getOpenmwVersionDescription(mResDir), shadersSupported, mCfgMgr);
     mEnvironment.setWindowManager(*mWindowManager);
 
     mInputManager = std::make_unique<MWInput::InputManager>(mWindow, mViewer, mScreenCaptureHandler,

apps/openmw/mwgui/console.cpp

@@ -13,6 +13,7 @@
 #include <components/compiler/locals.hpp>
 #include <components/compiler/scanner.hpp>
 #include <components/interpreter/interpreter.hpp>
+#include <components/settings/settings.hpp>
 
 #include "../mwscript/extensions.hpp"
 #include "../mwscript/interpretercontext.hpp"
@@ -133,10 +134,11 @@ namespace MWGui
         }
     }
 
-    Console::Console(int w, int h, bool consoleOnlyScripts)
+    Console::Console(int w, int h, bool consoleOnlyScripts, Files::ConfigurationManager& cfgMgr)
         : WindowBase("openmw_console.layout")
         , mCompilerContext(MWScript::CompilerContext::Type_Console)
         , mConsoleOnlyScripts(consoleOnlyScripts)
+        , mCfgMgr(cfgMgr)
     {
         setCoord(10, 10, w - 10, h / 2);
 
@@ -153,6 +155,15 @@ namespace MWGui
         // compiler
         Compiler::registerExtensions(mExtensions, mConsoleOnlyScripts);
         mCompilerContext.setExtensions(&mExtensions);
+
+        // command history file
+        initConsoleHistory();
+    }
+
+    Console::~Console()
+    {
+        if (mCommandHistoryFile && mCommandHistoryFile.is_open())
+            mCommandHistoryFile.close();
     }
 
     void Console::onOpen()
@@ -341,7 +352,12 @@ namespace MWGui
         // Add the command to the history, and set the current pointer to
         // the end of the list
         if (mCommandHistory.empty() || mCommandHistory.back() != cm)
+        {
             mCommandHistory.push_back(cm);
+
+            if (mCommandHistoryFile && mCommandHistoryFile.good())
+                mCommandHistoryFile << cm << std::endl;
+        }
         mCurrent = mCommandHistory.end();
         mEditString.clear();
         mHistory->setTextCursor(mHistory->getTextLength());
@@ -553,4 +569,43 @@ namespace MWGui
         ReferenceInterface::resetReference();
         setSelectedObject(MWWorld::Ptr());
     }
+
+    void Console::initConsoleHistory()
+    {
+        const auto filePath = mCfgMgr.getUserConfigPath() / "console_history.txt";
+        const size_t retrievalLimit = Settings::Manager::getSize("console history buffer size", "General");
+
+        std::ifstream historyFile(filePath);
+        std::string line;
+
+        // Read the previous session's commands from the file
+        while (std::getline(historyFile, line))
+        {
+            // Truncate the list if it exceeds the retrieval limit
+            if (mCommandHistory.size() >= retrievalLimit)
+                mCommandHistory.pop_front();
+            mCommandHistory.push_back(line);
+        }
+
+        historyFile.close();
+
+        mCurrent = mCommandHistory.end();
+        try
+        {
+            mCommandHistoryFile.exceptions(std::fstream::failbit | std::fstream::badbit);
+            mCommandHistoryFile.open(filePath, std::ios_base::trunc);
+
+            //  Update the history file
+            for (const auto& histObj : mCommandHistory)
+                mCommandHistoryFile << histObj << std::endl;
+            mCommandHistoryFile.close();
+
+            mCommandHistoryFile.open(filePath, std::ios_base::app);
+        }
+        catch (const std::ios_base::failure& e)
+        {
+            Log(Debug::Error) << "Error: Failed to write to console history file " << filePath << " : " << e.what()
+                              << " : " << std::generic_category().message(errno);
+        }
+    }
 }

apps/openmw/mwgui/console.hpp

@@ -8,6 +8,7 @@
 #include <components/compiler/errorhandler.hpp>
 #include <components/compiler/extensions.hpp>
 #include <components/compiler/output.hpp>
+#include <components/files/configurationmanager.hpp>
 
 #include "../mwbase/windowmanager.hpp"
 
@@ -34,8 +35,10 @@ namespace MWGui
         StringList mCommandHistory;
         StringList::iterator mCurrent;
         std::string mEditString;
+        std::ofstream mCommandHistoryFile;
 
-        Console(int w, int h, bool consoleOnlyScripts);
+        Console(int w, int h, bool consoleOnlyScripts, Files::ConfigurationManager& cfgMgr);
+        ~Console();
 
         void onOpen() override;
 
@@ -82,8 +85,9 @@ namespace MWGui
         Compiler::Extensions mExtensions;
         MWScript::CompilerContext mCompilerContext;
         std::vector<std::string> mNames;
-        bool mConsoleOnlyScripts;
 
+        bool mConsoleOnlyScripts;
+        Files::ConfigurationManager& mCfgMgr;
         bool compile(const std::string& cmd, Compiler::Output& output);
 
         /// Report error to the user.
@@ -97,6 +101,8 @@ namespace MWGui
         /// \note The list may contain duplicates (if a name is a keyword and an identifier at the same
         /// time).
         void listNames();
+
+        void initConsoleHistory();
     };
 }
 #endif

apps/openmw/mwgui/windowmanagerimp.cpp

@@ -122,7 +122,7 @@ namespace MWGui
     WindowManager::WindowManager(SDL_Window* window, osgViewer::Viewer* viewer, osg::Group* guiRoot,
         Resource::ResourceSystem* resourceSystem, SceneUtil::WorkQueue* workQueue, const std::filesystem::path& logpath,
         bool consoleOnlyScripts, Translation::Storage& translationDataStorage, ToUTF8::FromType encoding,
-        const std::string& versionDescription, bool useShaders)
+        const std::string& versionDescription, bool useShaders, Files::ConfigurationManager& cfgMgr)
         : mOldUpdateMask(0)
         , mOldCullMask(0)
         , mStore(nullptr)
@@ -177,6 +177,7 @@ namespace MWGui
         , mEncoding(encoding)
         , mVersionDescription(versionDescription)
         , mWindowVisible(true)
+        , mCfgMgr(cfgMgr)
     {
         int w, h;
         SDL_GetWindowSize(window, &w, &h);
@@ -334,7 +335,7 @@ namespace MWGui
         trackWindow(mTradeWindow, "barter");
         mGuiModeStates[GM_Barter] = GuiModeState({ mInventoryWindow, mTradeWindow });
 
-        auto console = std::make_unique<Console>(w, h, mConsoleOnlyScripts);
+        auto console = std::make_unique<Console>(w, h, mConsoleOnlyScripts, mCfgMgr);
         mConsole = console.get();
         mWindows.push_back(std::move(console));
         trackWindow(mConsole, "console");

apps/openmw/mwgui/windowmanagerimp.hpp

@@ -126,7 +126,8 @@ namespace MWGui
         WindowManager(SDL_Window* window, osgViewer::Viewer* viewer, osg::Group* guiRoot,
             Resource::ResourceSystem* resourceSystem, SceneUtil::WorkQueue* workQueue,
             const std::filesystem::path& logpath, bool consoleOnlyScripts, Translation::Storage& translationDataStorage,
-            ToUTF8::FromType encoding, const std::string& versionDescription, bool useShaders);
+            ToUTF8::FromType encoding, const std::string& versionDescription, bool useShaders,
+            Files::ConfigurationManager& cfgMgr);
         virtual ~WindowManager();
 
         /// Set the ESMStore to use for retrieving of GUI-related strings.
@@ -585,6 +586,8 @@ namespace MWGui
 
         void setCullMask(uint32_t mask) override;
         uint32_t getCullMask() override;
+
+        Files::ConfigurationManager& mCfgMgr;
     };
 }
 

docs/source/reference/modding/settings/general.rst

@@ -100,3 +100,16 @@ Zero disables the log viewer.
 
 This setting can only be configured by editing the settings configuration file.
 
+console history buffer size 
+---------------------------
+
+:Type:		platform dependant unsigned integer
+:Range:		>= 0
+:Default:	4096
+
+Number of console history objects to retrieve from previous session. If the number of history 
+objects in the file exceeds this value, history objects will be erased starting from the oldest. 
+This operation runs on every new session. See :doc:`../paths` for location of the history file.
+
+This setting can only be configured by editing the settings configuration file.
+

files/settings-default.cfg

@@ -396,6 +396,9 @@ preferred locales = en
 # Buffer size for the in-game log viewer (press F10 to toggle). Zero disables the log viewer.
 log buffer size = 65536
 
+# Number of console history objects to retrieve from previous session.
+console history buffer size = 4096
+
 [Shaders]
 
 # Force rendering with shaders. By default, only bump-mapped objects will use shaders.