Add the files

1 files changed, 55 insertions, 0 deletions

diff --git a/src/common/impl/debug_windows.c b/src/common/impl/debug_windows.c
new file mode 100644
index 0000000..fb76a65
--- /dev/null
+++ b/src/common/impl/debug_windows.c
@@ -0,0 +1,55 @@
+#include "common/debug.h"
+#include "common/windows/nt.h"
+
+#include <windows.h>
+
+const char* ffDebugWin32Error(DWORD errorCode) {
+    static char buffer[512];
+
+    wchar_t bufferW[256];
+    ULONG len = FormatMessageW(
+        FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+        NULL,
+        (DWORD) errorCode,
+        0,
+        bufferW,
+        ARRAY_SIZE(bufferW),
+        NULL);
+
+    if (len == 0) {
+        snprintf(buffer, sizeof(buffer), "Unknown error code (%lu)", errorCode);
+    } else {
+        // Remove trailing newline
+        while (len > 0 && (bufferW[len - 1] == '\r' || bufferW[len - 1] == '\n')) {
+            --len;
+        }
+
+        if (NT_SUCCESS(RtlUnicodeToUTF8N(buffer, sizeof(buffer), &len, bufferW, len * sizeof(wchar_t)))) {
+            snprintf(buffer + len, sizeof(buffer) - len, " (%lu)", errorCode);
+        } else {
+            snprintf(buffer, sizeof(buffer), "Unknown error (%lu)", errorCode);
+        }
+    }
+
+    return buffer;
+}
+
+const char* ffDebugNtStatus(NTSTATUS status) {
+    return ffDebugWin32Error(RtlNtStatusToDosError(status));
+}
+
+static inline DWORD HRESULTToWin32Error(HRESULT hr) {
+    if (SUCCEEDED(hr)) {
+        return ERROR_SUCCESS;
+    }
+
+    if (HRESULT_FACILITY(hr) == FACILITY_WIN32) {
+        return HRESULT_CODE(hr);
+    }
+
+    return ERROR_INTERNAL_ERROR;
+}
+
+const char* ffDebugHResult(HRESULT hr) {
+    return ffDebugWin32Error(HRESULTToWin32Error(hr));
+}