1 files changed, 44 insertions, 0 deletions
diff --git a/windows/msvc/snprintf.c b/windows/msvc/snprintf.c
new file mode 100644
index 0000000000..d200a4cbc8
--- /dev/null
+++ b/windows/msvc/snprintf.c
@@ -0,0 +1,44 @@
+/*
+* This file is part of the Micro Python project, http://micropython.org/
+*
+* The MIT License (MIT)
+*
+* Copyright (c) 2013, 2014 Damien P. George
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*/
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <malloc.h>
+
+// _snprintf/vsnprintf are fine, except the 'F' specifier is not handled
+int snprintf(char *dest, size_t count, const char *format, ...) {
+    const size_t fmtLen = strlen(format) + 1;
+    char *fixedFmt = alloca(fmtLen);
+    for (size_t i = 0; i < fmtLen; ++i)
+        fixedFmt[i] = format[i] == 'F' ? 'f' : format[i];
+
+    va_list args;
+    va_start(args, format);
+    const int ret = vsnprintf(dest, count, fixedFmt, args);
+    va_end(args);
+
+    return ret;
+}