1 files changed, 70 insertions, 0 deletions
diff --git a/contrib/libc++/src/support/win32/support.cpp b/contrib/libc++/src/support/win32/support.cpp
new file mode 100644
index 0000000..9e85077
--- /dev/null
+++ b/contrib/libc++/src/support/win32/support.cpp
@@ -0,0 +1,70 @@
+// -*- C++ -*-
+//===----------------------- support/win32/support.h ----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <support/win32/support.h>
+#include <stdarg.h> // va_start, va_end
+#include <stddef.h> // size_t
+#include <stdlib.h> // malloc
+#include <stdio.h>  // vsprintf, vsnprintf
+#include <string.h> // strcpy, wcsncpy
+
+int asprintf(char **sptr, const char *__restrict fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    int result = vasprintf(sptr, fmt, ap);
+    va_end(ap);
+    return result;
+}
+int vasprintf( char **sptr, const char *__restrict fmt, va_list ap )
+{
+    *sptr = NULL;
+    int count = vsnprintf( *sptr, 0, fmt, ap );
+    if( (count >= 0) && ((*sptr = (char*)malloc(count+1)) != NULL) )
+    {
+        vsprintf( *sptr, fmt, ap );
+        sptr[count] = '\0';
+    }
+
+    return count;
+}
+
+// FIXME: use wcrtomb and avoid copy
+// use mbsrtowcs which is available, first copy first nwc elements of src
+size_t mbsnrtowcs( wchar_t *__restrict dst, const char **__restrict src,
+                   size_t nmc, size_t len, mbstate_t *__restrict ps )
+{
+    char* local_src = new char[nmc+1];
+    char* nmcsrc = local_src;
+    strncpy( nmcsrc, *src, nmc );
+    nmcsrc[nmc] = '\0';
+    const size_t result = mbsrtowcs( dst, const_cast<const char **>(&nmcsrc), len, ps );
+    // propagate error
+    if( nmcsrc == NULL )
+        *src = NULL;
+    delete[] local_src;
+    return result;
+}
+// FIXME: use wcrtomb and avoid copy
+// use wcsrtombs which is available, first copy first nwc elements of src
+size_t wcsnrtombs( char *__restrict dst, const wchar_t **__restrict src,
+                   size_t nwc, size_t len, mbstate_t *__restrict ps )
+{
+    wchar_t* local_src = new wchar_t[nwc];
+    wchar_t* nwcsrc = local_src;
+    wcsncpy(nwcsrc, *src, nwc);
+    nwcsrc[nwc] = '\0';
+    const size_t result = wcsrtombs( dst, const_cast<const wchar_t **>(&nwcsrc), len, ps );
+    // propogate error
+    if( nwcsrc == NULL )
+        *src = NULL;
+    delete[] nwcsrc;
+    return result;
+}