1 files changed, 68 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/stdio/sprintf.c b/winsup/mingw/mingwex/stdio/sprintf.c
new file mode 100644
index 000000000..c3381d3ef
--- /dev/null
+++ b/winsup/mingw/mingwex/stdio/sprintf.c
@@ -0,0 +1,68 @@
+/* sprintf.c
+ *
+ * $Id$
+ *
+ * Provides an implementation of the "sprintf" function, conforming
+ * generally to C99 and SUSv3/POSIX specifications, with extensions
+ * to support Microsoft's non-standard format specifications.  This
+ * is included in libmingwex.a, whence it may replace the Microsoft
+ * function of the same name.
+ *
+ * Written by Keith Marshall <keithmarshall@users.sourceforge.net>
+ *
+ * This implementation of "sprintf" will normally be invoked by calling
+ * "__mingw_sprintf()" in preference to a direct reference to "sprintf()"
+ * itself; this leaves the MSVCRT implementation as the default, which
+ * will be deployed when user code invokes "sprint()".  Users who then
+ * wish to use this implementation may either call "__mingw_sprintf()"
+ * directly, or may use conditional preprocessor defines, to redirect
+ * references to "sprintf()" to "__mingw_sprintf()".
+ *
+ * Compiling this module with "-D INSTALL_AS_DEFAULT" will change this
+ * recommended convention, such that references to "sprintf()" in user
+ * code will ALWAYS be redirected to "__mingw_sprintf()"; if this option
+ * is adopted, then users wishing to use the MSVCRT implementation of
+ * "sprintf()" will be forced to use a "back-door" mechanism to do so.
+ * Such a "back-door" mechanism is provided with MinGW, allowing the
+ * MSVCRT implementation to be called as "__msvcrt_sprintf()"; however,
+ * since users may not expect this behaviour, a standard libmingwex.a
+ * installation does not employ this option.
+ *
+ *
+ * This is free software.  You may redistribute and/or modify it as you
+ * see fit, without restriction of copyright.
+ *
+ * This software is provided "as is", in the hope that it may be useful,
+ * but WITHOUT WARRANTY OF ANY KIND, not even any implied warranty of
+ * MERCHANTABILITY, nor of FITNESS FOR ANY PARTICULAR PURPOSE.  At no
+ * time will the author accept any form of liability for any damages,
+ * however caused, resulting from the use of this software.
+ *
+ */
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "pformat.h"
+
+int __cdecl __sprintf (char *, const char *, ...) __MINGW_NOTHROW;
+
+#ifdef INSTALL_AS_DEFAULT
+/*
+ * This implementation is to become the default for calls to sprintf();
+ * establish the alias to make this so, forcing users to use the back-door
+ * __msvcrt_sprintf() reference, to access the original MSVCRT function.
+ */
+int __cdecl __mingw_alias(sprintf) (char *, const char *, ...) __MINGW_NOTHROW;
+
+#endif
+
+int __cdecl __sprintf( char *buf, const char *fmt, ... )
+{
+  register int retval;
+  va_list argv; va_start( argv, fmt );
+  buf[retval = __pformat( PFORMAT_NOLIMIT, buf, 0, fmt, argv )] = '\0';
+  va_end( argv );
+  return retval;
+}
+
+/* $RCSfile$Revision$: end of file */