corrected return values for `UNDEF` macros

Making space for a more general base window class with support for wide
characters.

.vscode/c_cpp_properties.json

@@ -0,0 +1,17 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${default}"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "gnu17",
+            "cppStandard": "gnu++14",
+            "intelliSenseMode": "linux-gcc-x64",
+            "configurationProvider": "ms-vscode.cmake-tools"
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -55,5 +55,8 @@
         "typeinfo": "cpp",
         "pointers": "cpp"
     },
-    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools"
+    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools",
+    "C_Cpp.default.includePath": [
+        "${workspaceFolder}/include"
+    ]
 }

App.cpp

@@ -4,11 +4,12 @@
 
 #include "App.hpp"
 #include "Debug.hpp"
-#include <NCursesPtyWindow/Window.hpp>
+#include <NCursesPtyWindow/PtyWindow.hpp>
 
 #include <unistd.h>
 #include <utmp.h>
 #include <cstdlib>
+#include <mutex>
 
 namespace krikkel::NCursesPtyWindow
 {
@@ -21,7 +22,7 @@ namespace krikkel::NCursesPtyWindow
     {
         std::mutex writeMutex;
 
-        Window *ptyWindow = new Window(&writeMutex
+        PtyWindow *ptyWindow = new PtyWindow(&writeMutex
               , Root_Window->lines()
               , Root_Window->cols()
               , 0

CMakeLists.txt

@@ -13,7 +13,7 @@ set(CMAKE_CXX_STANDARD 17)
 include(CTest)
 enable_testing()
 
-add_library(NCursesPtyWindow Window.cpp SingleUserInput.cpp Debug.cpp)
+add_library(NCursesPtyWindow Window.cpp PtyWindow.cpp SingleUserInput.cpp Debug.cpp)
 
 ### path to own system includes
 include_directories(SYSTEM "${CMAKE_SOURCE_DIR}/include")

PtyWindow.cpp

@@ -0,0 +1,328 @@
+/**
+ * @author Christian Burger (christian@krikkel.de)
+ */
+
+#include <NCursesPtyWindow/PtyWindow.hpp>
+#include "Debug.hpp"
+
+#include <cstdio>
+#include <unistd.h>
+#include <sys/select.h>
+#include <gsl/gsl>
+#include <cctype>
+#include <termios.h>
+#include <fcntl.h>
+
+namespace krikkel::NCursesPtyWindow
+{
+    using gsl::narrow;
+    using std::lock_guard;
+
+    PtyWindow::PtyWindow(std::mutex *writeToNCursesMutex, int lines, int columns, int y, int x)
+            : writeToNCursesMutex(writeToNCursesMutex), Window(lines, columns, y, x)
+    {
+        // to get the original terminal we need to shutdown ncurses for a moment
+        /// @todo maybe try `reset_prog_mode()` and `reset_shell_mode()` instead
+        ::endwin();
+        tcgetattr(STDIN_FILENO, &terminalParameters);
+        ::refresh();
+
+        winsize windowSize =
+        {
+            .ws_row = narrow<short unsigned int>(this->height())
+          , .ws_col = narrow<short unsigned int>(this->width())
+        };
+        openpty(&fdPtyHost, &fdPtyClient, NULL, &terminalParameters, &windowSize);
+
+        pseudoTerminal = vterm_new(windowSize.ws_row, windowSize.ws_col);
+        vterm_set_utf8(pseudoTerminal, true);
+        pseudoTerminalScreen = vterm_obtain_screen(pseudoTerminal);
+        vterm_screen_reset(pseudoTerminalScreen, true);
+        vterm_screen_set_callbacks(pseudoTerminalScreen, &screenCallbacks, this);
+        vterm_output_set_callback(pseudoTerminal, &staticHandlerOutput, this);
+        vterm_screen_enable_altscreen(pseudoTerminalScreen, true);
+
+        //raw(); //— cbreak might suffice
+        //noecho(); — already set
+        //nodelay(true); — @todo needs some reprogramming
+        keypad(true);
+        nonl();
+
+        /// @todo block all signals, this thread does not handle any
+        readPtyClientThread =
+            std::thread(&PtyWindow::readFromPtyClientThreadMethod, this);
+    }
+
+    PtyWindow::~PtyWindow()
+    {
+        close(fdPtyHost);
+        close(fdPtyClient);
+        vterm_free(pseudoTerminal);
+    }
+
+    int PtyWindow::getFdPtyClient() const
+    {
+        return fdPtyClient;
+    }
+
+    void PtyWindow::writeToClient(const char *output, size_t length)
+    {
+        lock_guard writeLock(writeToPseudoTerminalMutex);
+        write(fdPtyHost, output, length);
+        __debug_log("written to PTY client: '" + __debug_make_bytes_printable(std::string(output, length)) + '\'');
+    }
+
+    void PtyWindow::writeUnicodeCharToClient(wint_t character)
+    {
+        vterm_keyboard_unichar(pseudoTerminal, character, VTERM_MOD_NONE);
+    }
+
+    void PtyWindow::writeKeyToClient(VTermKey key)
+    {
+        __debug_log("writing key: " + std::to_string(key));
+        vterm_keyboard_key(pseudoTerminal, key, VTERM_MOD_NONE);
+    }
+
+    void PtyWindow::readFromPtyClientThreadMethod()
+    {
+        /// @todo in theory, there is no need for a timeout or select …
+        ///       file descriptor is blocking
+        while(1)
+        {
+            readFromPtyClient();
+            struct timeval timeout = { .tv_sec = 0, .tv_usec = 200000 };
+            fd_set readFds;
+
+            FD_ZERO(&readFds);
+            FD_SET(fdPtyHost, &readFds);
+            if(select(fdPtyHost + 1, &readFds, NULL, NULL, &timeout) < 0)
+                break;
+        }
+    }
+
+    void PtyWindow::readFromPtyClient()
+    {
+        size_t bytesRead = read(fdPtyHost, ptyClientOutputBuffer, PTY_CLIENT_OUTPUT_BUFFER_SIZE);
+        if(bytesRead != -1 && bytesRead != 0)
+        {
+            lock_guard writeLock(writeToPseudoTerminalMutex);
+            vterm_input_write(pseudoTerminal, ptyClientOutputBuffer, bytesRead);
+        }
+        __debug_log("read from PTY client: '" + __debug_make_bytes_printable(std::string(ptyClientOutputBuffer, bytesRead)) + '\'');
+    }
+
+    VTermScreenCallbacks PtyWindow::screenCallbacks =
+    {
+        .damage = staticHandlerDamage,
+        .moverect = staticHandlerMoveRect,
+        .movecursor = staticHandlerMoveCursor,
+        .settermprop = staticHandlerSetTermProp,
+        .bell = staticHandlerBell,
+        .resize = staticHandlerResize,
+        .sb_pushline = staticHandlerPushLine,
+        .sb_popline = staticHandlerPopLine,
+    };
+
+    int PtyWindow::handlerDamage(VTermRect rect)
+    {
+        for(int x = rect.start_col; x < rect.end_col; ++x)
+            for(int y = rect.start_row; y < rect.end_row; ++y)
+                copyPtyCellToNCursesWindow(x, y);
+
+        refresh();
+
+        return 0;
+    }
+
+    int PtyWindow::handlerMoveRect(VTermRect dest, VTermRect src)
+    {
+        __debug_log("(unimplemented) move content in rectangle from ("
+              + std::to_string(src.start_col) + ", "
+              + std::to_string(src.start_row) + ", "
+              + std::to_string(src.end_col) + ", "
+              + std::to_string(src.end_row) + ") "
+              + "size: " + std::to_string((src.start_col - src.end_col) * (src.start_row - src.end_row))
+              + " to ("
+              + std::to_string(dest.start_col) + ", "
+              + std::to_string(dest.start_row) + ", "
+              + std::to_string(dest.end_col) + ", "
+              + std::to_string(dest.end_row) + ") "
+              + "size: " + std::to_string((dest.start_col - dest.end_col) * (dest.start_row - dest.end_row)));
+        return 0;
+    }
+
+    int PtyWindow::handlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible)
+    {
+        /// @todo maybe use `mvcur()` instead?
+        cursorX = pos.col;
+        cursorY = pos.row;
+        refresh();
+        return 0;
+    }
+
+    int PtyWindow::handlerSetTermProp(VTermProp prop, VTermValue *val)
+    {
+        /// @todo maybe use "vterm_get_prop_type() —> bool, number, string"?
+        __debug_stringify_switch_begin(handlerSetTermProp, prop, val);
+            __debug_stringify_switch_case(VTERM_PROP_CURSORVISIBLE);
+            __debug_stringify_switch_case(VTERM_PROP_CURSORBLINK);
+            __debug_stringify_switch_case(VTERM_PROP_ALTSCREEN);
+            __debug_stringify_switch_case(VTERM_PROP_REVERSE);
+                __debug_stringify_switch_case_end_bool(val->boolean);
+            __debug_stringify_switch_case(VTERM_PROP_TITLE);
+            __debug_stringify_switch_case(VTERM_PROP_ICONNAME);
+                __debug_stringify_switch_case_end_string(val->string);
+            __debug_stringify_switch_case(VTERM_PROP_CURSORSHAPE);
+            __debug_stringify_switch_case(VTERM_PROP_MOUSE);
+                __debug_stringify_switch_case_end_number(val->number);
+        __debug_stringify_switch_end(prop);
+
+        __debug_log(std::string("unimplemented handler called: ")
+                  + __debug_stringify_get_string(handlerSetTermProp)
+                   );
+        return 0;
+    }
+
+    int PtyWindow::handlerBell()
+    {
+        beep();
+        return 0;
+    }
+
+    int PtyWindow::handlerResize(int rows, int cols)
+    {
+        __debug_log("unimplemented handler called");
+        return 0;
+    }
+
+    int PtyWindow::handlerPushLine(int cols, const VTermScreenCell *cells)
+    {
+        __debug_log("(unimplemented) push line with " + std::to_string(cols) + " columns");
+        return 0;
+    }
+
+    int PtyWindow::handlerPopLine(int cols, VTermScreenCell *cells)
+    {
+        __debug_log("unimplemented handler called");
+        return 0;
+    }
+
+    attr_t PtyWindow::extractAttributesFromVTermCell(VTermScreenCell vTermCell)
+    {
+        attr_t result = A_NORMAL;
+        //__debug_log("unimplemented method called");
+        return result;
+    }
+
+    short PtyWindow::extractColorFromVTermCell(VTermScreenCell vTermCell)
+    {
+        //__debug_log("unimplemented method called");
+        return 0;
+    }
+
+    void PtyWindow::copyPtyCellToNCursesWindow(int x, int y)
+    {
+        VTermPos cellPosition = {y, x};
+        VTermScreenCell vTermCell;
+        cchar_t converted;
+        attr_t formatting;
+        short colorPair;
+        wchar_t character;
+
+        vterm_screen_get_cell(pseudoTerminalScreen, cellPosition, &vTermCell);
+        formatting = extractAttributesFromVTermCell(vTermCell);
+        colorPair = extractColorFromVTermCell(vTermCell);
+
+        if(vTermCell.chars[0] == 0)
+            character = ' ';
+        else
+            character = *vTermCell.chars;
+
+        {
+            lock_guard nCursesLock(*writeToNCursesMutex);
+            setcchar(&converted, &character, formatting, colorPair, NULL);
+            move(cellPosition.row, cellPosition.col);
+            chgat(1, formatting, colorPair, NULL);
+            add_wch(&converted);
+        }
+    }
+
+    int PtyWindow::refresh()
+    {
+        lock_guard nCursesLock(*writeToNCursesMutex);
+        move(cursorY, cursorX);
+        return NCursesWindow::refresh();
+    }
+
+    /// @todo potential racing condition where drawing into terminal while
+    ///       resizing?
+    int PtyWindow::wresize(int rows, int cols)
+    {
+        lock_guard nCursesLock(*writeToNCursesMutex);
+        lock_guard writeLock(writeToPseudoTerminalMutex);
+        winsize windowSize =
+        {
+            .ws_row = narrow<unsigned short>(rows)
+          , .ws_col = narrow<unsigned short>(cols)
+        };
+        ioctl(fdPtyHost, TIOCSWINSZ, &windowSize);
+      	vterm_set_size(pseudoTerminal, rows, cols);
+
+        return  NCursesWindow::wresize(rows, cols);
+    }
+
+    int PtyWindow::staticHandlerDamage(VTermRect rect, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerDamage(rect);
+    }
+
+    int PtyWindow::staticHandlerMoveRect(VTermRect dest, VTermRect src, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerMoveRect(dest, src);
+    }
+
+    int PtyWindow::staticHandlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerMoveCursor(pos, oldpos, visible);
+    }
+
+    int PtyWindow::staticHandlerSetTermProp(VTermProp prop, VTermValue *val, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerSetTermProp(prop, val);
+    }
+
+    int PtyWindow::staticHandlerBell(void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerBell();
+    }
+
+    int PtyWindow::staticHandlerResize(int rows, int cols, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerResize(rows, cols);
+    }
+
+    int PtyWindow::staticHandlerPushLine(int cols, const VTermScreenCell *cells, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerPushLine(cols, cells);
+    }
+
+    int PtyWindow::staticHandlerPopLine(int cols, VTermScreenCell *cells, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        return instance->handlerPopLine(cols, cells);
+    }
+
+    void PtyWindow::staticHandlerOutput(const char *s, size_t len, void *user)
+    {
+        PtyWindow *instance = static_cast<PtyWindow *>(user);
+        __debug_log("output handler writing to client: '" + __debug_make_bytes_printable(std::string(s, len)) + "'");
+        instance->writeToClient(s, len);
+   }
+}

Window.cpp

@@ -3,84 +3,31 @@
  */
 
 #include <NCursesPtyWindow/Window.hpp>
-#include "Debug.hpp"
-
-#include <cstdio>
-#include <unistd.h>
-#include <sys/select.h>
-#include <gsl/gsl>
-#include <cctype>
-#include <termios.h>
-#include <fcntl.h>
 
 namespace krikkel::NCursesPtyWindow
 {
-    using gsl::narrow;
-    using std::lock_guard;
+    Window::Window(int lines, int columns, int y, int x)
+            : NCursesWindow(lines, columns, y, x)
+    {}
 
-    Window::Window(std::mutex *writeToNCursesMutex, int lines, int columns, int y, int x)
-            : writeToNCursesMutex(writeToNCursesMutex), NCursesWindow(lines, columns, y, x)
+    int Window::addnwstr(const wchar_t *wstr, int n)
     {
-        // to get the original terminal we need to shutdown ncurses for a moment
-        /// @todo maybe try `reset_prog_mode()` and `reset_shell_mode()` instead
-        ::endwin();
-        tcgetattr(STDIN_FILENO, &terminalParameters);
-        ::refresh();
-
-        winsize windowSize =
-        {
-            .ws_row = narrow<short unsigned int>(this->height())
-          , .ws_col = narrow<short unsigned int>(this->width())
-        };
-        openpty(&fdPtyHost, &fdPtyClient, NULL, &terminalParameters, &windowSize);
-
-        pseudoTerminal = vterm_new(windowSize.ws_row, windowSize.ws_col);
-        vterm_set_utf8(pseudoTerminal, true);
-        pseudoTerminalScreen = vterm_obtain_screen(pseudoTerminal);
-        vterm_screen_reset(pseudoTerminalScreen, true);
-        vterm_screen_set_callbacks(pseudoTerminalScreen, &screenCallbacks, this);
-        vterm_output_set_callback(pseudoTerminal, &staticHandlerOutput, this);
-        vterm_screen_enable_altscreen(pseudoTerminalScreen, true);
-
-        //raw(); //— cbreak might suffice
-        //noecho(); — already set
-        //nodelay(true); — @todo needs some reprogramming
-        keypad(true);
-        nonl();
-
-        /// @todo block all signals, this thread does not handle any
-        readPtyClientThread =
-            std::thread(&Window::readFromPtyClientThreadMethod, this);
+        return ::waddnwstr(w, wstr, n);
     }
 
-    Window::~Window()
+    int Window::add_wch(const cchar_t *character)
     {
-        close(fdPtyHost);
-        close(fdPtyClient);
-        vterm_free(pseudoTerminal);
+        return ::wadd_wch(w, character);
     }
 
-    int Window::getFdPtyClient() const
+    int Window::ins_wch(const cchar_t *character)
     {
-        return fdPtyClient;
+        return ::wins_wch(w, character);
     }
 
-    void Window::writeToClient(const char *output, size_t length)
+    int Window::get_wch(wint_t *character)
     {
-        lock_guard writeLock(writeToPseudoTerminalMutex);
-        write(fdPtyHost, output, length);
-        __debug_log("written to PTY client: '" + __debug_make_bytes_printable(std::string(output, length)) + '\'');
-    }
-
-    void Window::writeUnicodeCharToClient(wint_t character)
-    {
-        vterm_keyboard_unichar(pseudoTerminal, character, VTERM_MOD_NONE);
-    }
-
-    void Window::writeKeyToClient(VTermKey key)
-    {
-        __debug_log("writing key: " + std::to_string(key));
-        vterm_keyboard_key(pseudoTerminal, key, VTERM_MOD_NONE);
+        return ::wget_wch(w, character);
     }
 
     SingleUserInput Window::readSingleUserInput()
@@ -90,256 +37,4 @@ namespace krikkel::NCursesPtyWindow
         return SingleUserInput(result, input);
     }
 
-    void Window::readFromPtyClientThreadMethod()
-    {
-        /// @todo in theory, there is no need for a timeout or select …
-        ///       file descriptor is blocking
-        while(1)
-        {
-            readFromPtyClient();
-            struct timeval timeout = { .tv_sec = 0, .tv_usec = 200000 };
-            fd_set readFds;
-
-            FD_ZERO(&readFds);
-            FD_SET(fdPtyHost, &readFds);
-            if(select(fdPtyHost + 1, &readFds, NULL, NULL, &timeout) < 0)
-                break;
-        }
-    }
-
-    void Window::readFromPtyClient()
-    {
-        size_t bytesRead = read(fdPtyHost, ptyClientOutputBuffer, PTY_CLIENT_OUTPUT_BUFFER_SIZE);
-        if(bytesRead != -1 && bytesRead != 0)
-        {
-            lock_guard writeLock(writeToPseudoTerminalMutex);
-            vterm_input_write(pseudoTerminal, ptyClientOutputBuffer, bytesRead);
-        }
-        __debug_log("read from PTY client: '" + __debug_make_bytes_printable(std::string(ptyClientOutputBuffer, bytesRead)) + '\'');
-    }
-
-    VTermScreenCallbacks Window::screenCallbacks =
-    {
-        .damage = staticHandlerDamage,
-        .moverect = staticHandlerMoveRect,
-        .movecursor = staticHandlerMoveCursor,
-        .settermprop = staticHandlerSetTermProp,
-        .bell = staticHandlerBell,
-        .resize = staticHandlerResize,
-        .sb_pushline = staticHandlerPushLine,
-        .sb_popline = staticHandlerPopLine,
-    };
-
-    int Window::handlerDamage(VTermRect rect)
-    {
-        for(int x = rect.start_col; x < rect.end_col; ++x)
-            for(int y = rect.start_row; y < rect.end_row; ++y)
-                copyPtyCellToNCursesWindow(x, y);
-
-        refresh();
-
-        return 0;
-    }
-
-    int Window::handlerMoveRect(VTermRect dest, VTermRect src)
-    {
-        __debug_log("(unimplemented) move content in rectangle from ("
-              + std::to_string(src.start_col) + ", "
-              + std::to_string(src.start_row) + ", "
-              + std::to_string(src.end_col) + ", "
-              + std::to_string(src.end_row) + ") "
-              + "size: " + std::to_string((src.start_col - src.end_col) * (src.start_row - src.end_row))
-              + " to ("
-              + std::to_string(dest.start_col) + ", "
-              + std::to_string(dest.start_row) + ", "
-              + std::to_string(dest.end_col) + ", "
-              + std::to_string(dest.end_row) + ") "
-              + "size: " + std::to_string((dest.start_col - dest.end_col) * (dest.start_row - dest.end_row)));
-        return 0;
-    }
-
-    int Window::handlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible)
-    {
-        /// @todo maybe use `mvcur()` instead?
-        cursorX = pos.col;
-        cursorY = pos.row;
-        refresh();
-        return 0;
-    }
-
-    int Window::handlerSetTermProp(VTermProp prop, VTermValue *val)
-    {
-        /// @todo maybe use "vterm_get_prop_type() —> bool, number, string"?
-        __debug_stringify_switch_begin(handlerSetTermProp, prop, val);
-            __debug_stringify_switch_case(VTERM_PROP_CURSORVISIBLE);
-            __debug_stringify_switch_case(VTERM_PROP_CURSORBLINK);
-            __debug_stringify_switch_case(VTERM_PROP_ALTSCREEN);
-            __debug_stringify_switch_case(VTERM_PROP_REVERSE);
-                __debug_stringify_switch_case_end_bool(val->boolean);
-            __debug_stringify_switch_case(VTERM_PROP_TITLE);
-            __debug_stringify_switch_case(VTERM_PROP_ICONNAME);
-                __debug_stringify_switch_case_end_string(val->string);
-            __debug_stringify_switch_case(VTERM_PROP_CURSORSHAPE);
-            __debug_stringify_switch_case(VTERM_PROP_MOUSE);
-                __debug_stringify_switch_case_end_number(val->number);
-        __debug_stringify_switch_end(prop);
-
-        __debug_log(std::string("unimplemented handler called: ")
-                  + __debug_stringify_get_string(handlerSetTermProp)
-                   );
-        return 0;
-    }
-
-    int Window::handlerBell()
-    {
-        beep();
-        return 0;
-    }
-
-    int Window::handlerResize(int rows, int cols)
-    {
-        __debug_log("unimplemented handler called");
-        return 0;
-    }
-
-    int Window::handlerPushLine(int cols, const VTermScreenCell *cells)
-    {
-        __debug_log("(unimplemented) push line with " + std::to_string(cols) + " columns");
-        return 0;
-    }
-
-    int Window::handlerPopLine(int cols, VTermScreenCell *cells)
-    {
-        __debug_log("unimplemented handler called");
-        return 0;
-    }
-
-    attr_t Window::extractAttributesFromVTermCell(VTermScreenCell vTermCell)
-    {
-        attr_t result = A_NORMAL;
-        //__debug_log("unimplemented method called");
-        return result;
-    }
-
-    short Window::extractColorFromVTermCell(VTermScreenCell vTermCell)
-    {
-        //__debug_log("unimplemented method called");
-        return 0;
-    }
-
-    void Window::copyPtyCellToNCursesWindow(int x, int y)
-    {
-        VTermPos cellPosition = {y, x};
-        VTermScreenCell vTermCell;
-        cchar_t converted;
-        attr_t formatting;
-        short colorPair;
-        wchar_t character;
-
-        vterm_screen_get_cell(pseudoTerminalScreen, cellPosition, &vTermCell);
-        formatting = extractAttributesFromVTermCell(vTermCell);
-        colorPair = extractColorFromVTermCell(vTermCell);
-
-        if(vTermCell.chars[0] == 0)
-            character = ' ';
-        else
-            character = *vTermCell.chars;
-
-        {
-            lock_guard nCursesLock(*writeToNCursesMutex);
-            setcchar(&converted, &character, formatting, colorPair, NULL);
-            move(cellPosition.row, cellPosition.col);
-            chgat(1, formatting, colorPair, NULL);
-            add_wch(&converted);
-        }
-    }
-
-    int Window::add_wch(const cchar_t *character)
-    {
-        return ::wadd_wch(w, character);
-    }
-
-    int Window::get_wch(wint_t *character)
-    {
-        return ::wget_wch(w, character);
-    }
-
-    int Window::refresh()
-    {
-        lock_guard nCursesLock(*writeToNCursesMutex);
-        move(cursorY, cursorX);
-        return NCursesWindow::refresh();
-    }
-
-    /// @todo potential racing condition where drawing into terminal while
-    ///       resizing?
-    int Window::wresize(int rows, int cols)
-    {
-        lock_guard nCursesLock(*writeToNCursesMutex);
-        lock_guard writeLock(writeToPseudoTerminalMutex);
-        winsize windowSize =
-        {
-            .ws_row = narrow<unsigned short>(rows)
-          , .ws_col = narrow<unsigned short>(cols)
-        };
-        ioctl(fdPtyHost, TIOCSWINSZ, &windowSize);
-      	vterm_set_size(pseudoTerminal, rows, cols);
-
-        return  NCursesWindow::wresize(rows, cols);
-    }
-
-    int Window::staticHandlerDamage(VTermRect rect, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerDamage(rect);
-    }
-
-    int Window::staticHandlerMoveRect(VTermRect dest, VTermRect src, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerMoveRect(dest, src);
-    }
-
-    int Window::staticHandlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerMoveCursor(pos, oldpos, visible);
-    }
-
-    int Window::staticHandlerSetTermProp(VTermProp prop, VTermValue *val, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerSetTermProp(prop, val);
-    }
-
-    int Window::staticHandlerBell(void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerBell();
-    }
-
-    int Window::staticHandlerResize(int rows, int cols, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerResize(rows, cols);
-    }
-
-    int Window::staticHandlerPushLine(int cols, const VTermScreenCell *cells, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerPushLine(cols, cells);
-    }
-
-    int Window::staticHandlerPopLine(int cols, VTermScreenCell *cells, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        return instance->handlerPopLine(cols, cells);
-    }
-
-    void Window::staticHandlerOutput(const char *s, size_t len, void *user)
-    {
-        Window *instance = static_cast<Window *>(user);
-        __debug_log("output handler writing to client: '" + __debug_make_bytes_printable(std::string(s, len)) + "'");
-        instance->writeToClient(s, len);
-   }
 }

include/NCursesPtyWindow/PtyWindow.hpp

@@ -0,0 +1,76 @@
+/**
+ * @brief `ncurses` window displaying contents of a pseudo terminal
+ * @author Christian Burger (christian@krikkel.de)
+ */
+
+#ifndef __WINDOW_H__
+#define __WINDOW_H__
+
+#include "SingleUserInput.hpp"
+#include "Window.hpp"
+
+#include <cursesw.h>
+#include <pty.h>
+#include <vterm.h>
+#include <string>
+#include <thread>
+#include <mutex>
+
+namespace krikkel::NCursesPtyWindow
+{
+    class PtyWindow : public Window
+    {
+        public:
+            PtyWindow(std::mutex *writeToNCursesMutex, int lines, int columns, int y, int x);
+            ~PtyWindow();
+
+            int getFdPtyClient() const;
+            void writeToClient(const char * string, size_t length);
+            void writeUnicodeCharToClient(wint_t character);
+            void writeKeyToClient(VTermKey key);
+
+            int refresh() override;
+            int wresize(int rows, int cols);
+
+        private:
+            int fdPtyHost, fdPtyClient;
+            struct termios terminalParameters;
+            VTerm *pseudoTerminal;
+            std::mutex writeToPseudoTerminalMutex;
+            std::mutex *writeToNCursesMutex;
+            VTermScreen *pseudoTerminalScreen;
+            static VTermScreenCallbacks screenCallbacks;
+            /// @todo one line is at most 4096 chars long
+            static const uint16_t PTY_CLIENT_OUTPUT_BUFFER_SIZE = 2 * 4096;
+            char ptyClientOutputBuffer[PTY_CLIENT_OUTPUT_BUFFER_SIZE];
+            uint16_t cursorX, cursorY;
+
+            std::thread readPtyClientThread;
+            void readFromPtyClientThreadMethod();
+            void readFromPtyClient();
+
+            int handlerDamage(VTermRect rect);
+            int handlerMoveRect(VTermRect dest, VTermRect src);
+            int handlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible);
+            int handlerSetTermProp(VTermProp prop, VTermValue *val);
+            int handlerBell();
+            int handlerResize(int rows, int cols);
+            int handlerPushLine(int cols, const VTermScreenCell *cells);
+            int handlerPopLine(int cols, VTermScreenCell *cells);
+
+            attr_t extractAttributesFromVTermCell(VTermScreenCell cell);
+            short extractColorFromVTermCell(VTermScreenCell cell);
+            void copyPtyCellToNCursesWindow(int x, int y);
+
+            static int staticHandlerDamage(VTermRect rect, void *user);
+            static int staticHandlerMoveRect(VTermRect dest, VTermRect src, void *user);
+            static int staticHandlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible, void *user);
+            static int staticHandlerSetTermProp(VTermProp prop, VTermValue *val, void *user);
+            static int staticHandlerBell(void *user);
+            static int staticHandlerResize(int rows, int cols, void *user);
+            static int staticHandlerPushLine(int cols, const VTermScreenCell *cells, void *user);
+            static int staticHandlerPopLine(int cols, VTermScreenCell *cells, void *user);
+            static void staticHandlerOutput(const char *s, size_t len, void *user);
+    };
+}
+#endif // __WINDOW_H__

include/NCursesPtyWindow/Window.hpp

@@ -1,28 +1,35 @@
 /**
- * @brief `ncurses` window displaying contents of a pseudo terminal
+ * @brief Providing wide character methods missing in NCursesWindow.
  * @author Christian Burger (christian@krikkel.de)
  */
 
-#ifndef __WINDOW_H__
-#define __WINDOW_H__
+#ifndef A2C3FDB7_7A85_4527_BC85_366E14149EB8
+#define A2C3FDB7_7A85_4527_BC85_366E14149EB8
 
 #include "SingleUserInput.hpp"
 
-#include <cursesw.h>
-#include <pty.h>
-#include <vterm.h>
-#include <string>
-#include <thread>
-#include <mutex>
+#include <ncursesw/cursesw.h>
+
+#ifdef addnwstr
+inline int UNDEF(addnwstr)(const wchar_t *wstr, int n) { addnwstr(wstr, n); }
+#undef addnwstr
+#define addnwstr UNDEF(addnwstr)
+#endif
 
 #ifdef add_wch
-inline void UNDEF(add_wch)(const cchar_t *character) { add_wch(character); }
+inline int UNDEF(add_wch)(const cchar_t *character) { add_wch(character); }
 #undef add_wch
 #define add_wch UNDEF(add_wch)
 #endif
 
+#ifdef ins_wch
+inline int UNDEF(ins_wch)(cchar_t *character) { ins_wch(character); }
+#undef ins_wch
+#define ins_wch UNDEF(ins_wch)
+#endif
+
 #ifdef get_wch
-inline void UNDEF(get_wch)(wint_t *character) { get_wch(character); }
+inline int UNDEF(get_wch)(wint_t *character) { get_wch(character); }
 #undef get_wch
 #define get_wch UNDEF(get_wch)
 #endif
@@ -32,60 +39,14 @@ namespace krikkel::NCursesPtyWindow
     class Window : public NCursesWindow
     {
         public:
-            Window(std::mutex *writeToNCursesMutex, int lines, int columns, int y, int x);
-            ~Window();
-
-            int getFdPtyClient() const;
-            void writeToClient(const char * string, size_t length);
-            void writeUnicodeCharToClient(wint_t character);
-            void writeKeyToClient(VTermKey key);
+            Window(int lines, int columns, int y, int x);
+            int addnwstr(const wchar_t *wstr, int n);
+            int add_wch(const cchar_t *character);
+            int ins_wch(const cchar_t *character);
+            int get_wch(wint_t *character);
 
             SingleUserInput readSingleUserInput();
-
-            int add_wch(const cchar_t *character);
-            int get_wch(wint_t *character);
-            int refresh() override;
-            int wresize(int rows, int cols);
-
-        private:
-            int fdPtyHost, fdPtyClient;
-            struct termios terminalParameters;
-            VTerm *pseudoTerminal;
-            std::mutex writeToPseudoTerminalMutex;
-            std::mutex *writeToNCursesMutex;
-            VTermScreen *pseudoTerminalScreen;
-            static VTermScreenCallbacks screenCallbacks;
-            /// @todo one line is at most 4096 chars long
-            static const uint16_t PTY_CLIENT_OUTPUT_BUFFER_SIZE = 2 * 4096;
-            char ptyClientOutputBuffer[PTY_CLIENT_OUTPUT_BUFFER_SIZE];
-            uint16_t cursorX, cursorY;
-
-            std::thread readPtyClientThread;
-            void readFromPtyClientThreadMethod();
-            void readFromPtyClient();
-
-            int handlerDamage(VTermRect rect);
-            int handlerMoveRect(VTermRect dest, VTermRect src);
-            int handlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible);
-            int handlerSetTermProp(VTermProp prop, VTermValue *val);
-            int handlerBell();
-            int handlerResize(int rows, int cols);
-            int handlerPushLine(int cols, const VTermScreenCell *cells);
-            int handlerPopLine(int cols, VTermScreenCell *cells);
-
-            attr_t extractAttributesFromVTermCell(VTermScreenCell cell);
-            short extractColorFromVTermCell(VTermScreenCell cell);
-            void copyPtyCellToNCursesWindow(int x, int y);
-
-            static int staticHandlerDamage(VTermRect rect, void *user);
-            static int staticHandlerMoveRect(VTermRect dest, VTermRect src, void *user);
-            static int staticHandlerMoveCursor(VTermPos pos, VTermPos oldpos, int visible, void *user);
-            static int staticHandlerSetTermProp(VTermProp prop, VTermValue *val, void *user);
-            static int staticHandlerBell(void *user);
-            static int staticHandlerResize(int rows, int cols, void *user);
-            static int staticHandlerPushLine(int cols, const VTermScreenCell *cells, void *user);
-            static int staticHandlerPopLine(int cols, VTermScreenCell *cells, void *user);
-            static void staticHandlerOutput(const char *s, size_t len, void *user);
     };
 }
-#endif // __WINDOW_H__
+
+#endif /* A2C3FDB7_7A85_4527_BC85_366E14149EB8 */