1 files changed, 37 insertions, 0 deletions
diff --git a/src/wchar/fgetws.c b/src/wchar/fgetws.c
new file mode 100644
index 00000000..5262a79d
--- /dev/null
+++ b/src/wchar/fgetws.c
@@ -0,0 +1,37 @@
+#include <wchar.h>
+#include "stdio.h"
+#include "nonstd/assert.h"
+
+wchar_t * fgetws(wchar_t * restrict s, int n, FILE * restrict stream)
+{
+	ASSERT_NONNULL(s);
+	ASSERT_NONNULL(stream);
+
+	if (fwide(stream, 1) <= 0) {
+		/* not a wide stream */
+		return NULL;
+	}
+
+	int i;
+	for (i = 0; i < n; i++) {
+		s[i] = fgetwc(stream);
+		if (s[i] == WEOF) {
+			if (feof(stream)) {
+				s[i] = L'\0';
+				return s;
+			}
+			/* read or encoding error */
+			return NULL;
+		}
+		if (s[i] == L'\0') {
+			break;
+		}
+	}
+	s[i] = L'\0';
+
+	return s;
+}
+
+/*
+STDC(199409)
+*/