ccmake: Add Windows support using PDCurses

CMakeLists.txt

@@ -674,10 +674,10 @@ macro (CMAKE_BUILD_UTILITIES)
     if (UNIX)
       include(${CMake_SOURCE_DIR}/Source/Checks/Curses.cmake)
       set(BUILD_CursesDialog_DEFAULT "${CMakeCheckCurses_COMPILED}")
-      option(BUILD_CursesDialog "Build the CMake Curses Dialog ccmake" "${BUILD_CursesDialog_DEFAULT}")
-    else()
-      set(BUILD_CursesDialog 0)
+    elseif(WIN32)
+      set(BUILD_CursesDialog_DEFAULT "OFF")
     endif()
+    option(BUILD_CursesDialog "Build the CMake Curses Dialog ccmake" "${BUILD_CursesDialog_DEFAULT}")
   endif ()
   if(BUILD_CursesDialog)
     if(UNIX)
@@ -690,6 +690,13 @@ macro (CMAKE_BUILD_UTILITIES)
           )
         set(BUILD_CursesDialog 0)
       endif()
+    elseif(WIN32)
+      # FIXME: Add support for system-provided pdcurses.
+      add_subdirectory(Utilities/cmpdcurses)
+      set(CURSES_LIBRARY cmpdcurses)
+      set(CURSES_INCLUDE_PATH "") # cmpdcurses has usage requirements
+      set(CMAKE_USE_SYSTEM_FORM 0)
+      set(HAVE_CURSES_USE_DEFAULT_COLORS 1)
     endif()
   endif()
   if(BUILD_CursesDialog)

Source/CursesDialog/ccmake.cxx

@@ -51,6 +51,7 @@ static const char* cmDocumentationOptions[][2] = {
 
 cmCursesForm* cmCursesForm::CurrentForm = nullptr;
 
+#ifndef _WIN32
 extern "C" {
 
 static void onsig(int /*unused*/)
@@ -61,6 +62,7 @@ static void onsig(int /*unused*/)
   signal(SIGWINCH, onsig);
 }
 }
+#endif // _WIN32
 
 int main(int argc, char const* const* argv)
 {
@@ -126,7 +128,9 @@ int main(int argc, char const* const* argv)
   keypad(stdscr, true); /* Use key symbols as KEY_DOWN */
   cmCursesColor::InitColors();
 
+#ifndef _WIN32
   signal(SIGWINCH, onsig);
+#endif // _WIN32
 
   int x;
   int y;

Source/CursesDialog/cmCursesForm.cxx

@@ -2,7 +2,10 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesForm.h"
 
-#include <unistd.h>
+#include <cstdlib>
+#ifndef _WIN32
+#  include <unistd.h>
+#endif // _WIN32
 
 cmsys::ofstream cmCursesForm::DebugFile;
 bool cmCursesForm::Debug = false;
@@ -51,8 +54,12 @@ void cmCursesForm::HandleResize()
   endwin();
   if (initscr() == nullptr) {
     static const char errmsg[] = "Error: ncurses initialization failed\n";
+#ifdef _WIN32
+    fprintf(stderr, "%s", errmsg);
+#else
     auto r = write(STDERR_FILENO, errmsg, sizeof(errmsg) - 1);
     static_cast<void>(r);
+#endif // _WIN32
     exit(1);
   }
   noecho();             /* Echo off */

Source/CursesDialog/cmCursesLongMessageForm.cxx

@@ -177,6 +177,12 @@ void cmCursesLongMessageForm::HandleInput()
     this->PrintKeys();
     int key = getch();
 
+#ifdef _WIN32
+    if (key == KEY_RESIZE) {
+      HandleResize();
+    }
+#endif // _WIN32
+
     snprintf(debugMessage, sizeof(debugMessage),
              "Message widget handling input, key: %d", key);
     cmCursesForm::LogMessage(debugMessage);

Source/CursesDialog/cmCursesMainForm.cxx

@@ -686,6 +686,12 @@ void cmCursesMainForm::HandleInput()
     }
     int key = getch();
 
+#ifdef _WIN32
+    if (key == KEY_RESIZE) {
+      HandleResize();
+    }
+#endif // _WIN32
+
     getmaxyx(stdscr, y, x);
     // If window too small, handle 'q' only
     if (x < cmCursesMainForm::MIN_WIDTH || y < cmCursesMainForm::MIN_HEIGHT) {