1 files changed, 44 insertions, 0 deletions
diff --git a/src/common/windows/unicode.c b/src/common/windows/unicode.c
new file mode 100644
index 0000000..06008ba
--- /dev/null
+++ b/src/common/windows/unicode.c
@@ -0,0 +1,44 @@
+#include "unicode.h"
+
+#include "common/windows/nt.h"
+
+void ffStrbufSetNWS(FFstrbuf* result, uint32_t length, const wchar_t* source) {
+    if (!length) {
+        ffStrbufClear(result);
+        return;
+    }
+
+    ULONG size_needed = 0;
+    NTSTATUS status = RtlUnicodeToUTF8N(NULL, 0, &size_needed, source, length * sizeof(wchar_t));
+
+    if (size_needed == 0) {
+        ffStrbufSetF(result, "RtlUnicodeToUTF8N failed: %X", (unsigned) status);
+        return;
+    }
+
+    ffStrbufEnsureFixedLengthFree(result, size_needed);
+    RtlUnicodeToUTF8N(result->chars, size_needed, &size_needed, source, length * sizeof(wchar_t));
+
+    result->length = size_needed;
+    result->chars[size_needed] = '\0';
+}
+
+void ffStrbufAppendNWS(FFstrbuf* result, uint32_t length, const wchar_t* source) {
+    if (!length) {
+        return;
+    }
+
+    ULONG size_needed = 0;
+    NTSTATUS status = RtlUnicodeToUTF8N(NULL, 0, &size_needed, source, length * sizeof(wchar_t));
+
+    if (size_needed == 0) {
+        ffStrbufAppendF(result, "RtlUnicodeToUTF8N failed: %X", (unsigned) status);
+        return;
+    }
+
+    ffStrbufEnsureFree(result, size_needed);
+    RtlUnicodeToUTF8N(result->chars + result->length, size_needed, &size_needed, source, length * sizeof(wchar_t));
+
+    result->length += size_needed;
+    result->chars[result->length] = '\0';
+}