1 files changed, 45 insertions, 0 deletions
diff --git a/src/detection/terminalsize/terminalsize_windows.c b/src/detection/terminalsize/terminalsize_windows.c
new file mode 100644
index 0000000..05888e7
--- /dev/null
+++ b/src/detection/terminalsize/terminalsize_windows.c
@@ -0,0 +1,45 @@
+#include "terminalsize.h"
+#include "common/io.h"
+
+#include <windows.h>
+
+bool ffDetectTerminalSize(FFTerminalSizeResult* result) {
+    HANDLE hOutput = GetStdHandle(STD_OUTPUT_HANDLE);
+    FF_AUTO_CLOSE_FD HANDLE hConout = INVALID_HANDLE_VALUE;
+    {
+        DWORD outputMode;
+        if (!GetConsoleMode(hOutput, &outputMode)) {
+            hConout = CreateFileW(L"CONOUT$", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, NULL);
+            hOutput = hConout;
+        }
+    }
+    {
+        CONSOLE_SCREEN_BUFFER_INFO csbi;
+        if (GetConsoleScreenBufferInfo(hOutput, &csbi)) {
+            result->columns = (uint16_t) (csbi.srWindow.Right - csbi.srWindow.Left + 1);
+            result->rows = (uint16_t) (csbi.srWindow.Bottom - csbi.srWindow.Top + 1);
+        } else {
+            // Windows Terminal doesn't report `\e` for some reason
+            ffGetTerminalResponse("\e[18t", 2, "%*[^;];%hu;%hut", &result->rows, &result->columns);
+        }
+    }
+
+    if (result->columns == 0 && result->rows == 0) {
+        return false;
+    }
+
+    {
+        CONSOLE_FONT_INFOEX cfi = { .cbSize = sizeof(cfi) };
+        if (GetCurrentConsoleFontEx(hOutput, FALSE, &cfi)) // Only works for ConHost
+        {
+            result->width = result->columns * (uint16_t) cfi.dwFontSize.X;
+            result->height = result->rows * (uint16_t) cfi.dwFontSize.Y;
+        }
+        if (result->width == 0 || result->height == 0) {
+            // Windows Terminal doesn't report `\e` for some reason
+            ffGetTerminalResponse("\e[14t", 2, "%*[^;];%hu;%hut", &result->height, &result->width);
+        }
+    }
+
+    return result->columns > 0 && result->rows > 0;
+}