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-rw-r--r--src/pal/src/safecrt/swprintf.cpp120
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diff --git a/src/pal/src/safecrt/swprintf.cpp b/src/pal/src/safecrt/swprintf.cpp
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+++ b/src/pal/src/safecrt/swprintf.cpp
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/***
+*swprintf.c - print formatted to string
+*
+*Purpose:
+* defines _swprintf(), _swprintf_c and _snwprintf() - print formatted data
+* to string
+*
+*******************************************************************************/
+
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include "internal_securecrt.h"
+
+#include "mbusafecrt_internal.h"
+
+/***
+*ifndef _COUNT_
+*int _swprintf(string, format, ...) - print formatted data to string
+*else
+*ifndef _SWPRINTFS_ERROR_RETURN_FIX
+*int _snwprintf(string, cnt, format, ...) - print formatted data to string
+*else
+*int _swprintf_c(string, cnt, format, ...) - print formatted data to string
+*endif
+*endif
+*
+*Purpose:
+* Prints formatted data to the using the format string to
+* format data and getting as many arguments as called for
+* Sets up a FILE so file i/o operations can be used, make
+* string look like a huge buffer to it, but _flsbuf will
+* refuse to flush it if it fills up. Appends '\0' to make
+* it a true string. _output does the real work here
+*
+* Allocate the 'fake' _iob[] entry statically instead of on
+* the stack so that other routines can assume that _iob[]
+* entries are in are in DGROUP and, thus, are near.
+*
+* We alias swprintf to _swprintf
+*
+*ifdef _COUNT_
+*ifndef _SWPRINTFS_ERROR_RETURN_FIX
+* The _snwprintf() flavor takes a count argument that is
+* the max number of wide characters that should be written to the
+* user's buffer.
+* We don't expose this function directly in the headers.
+*else
+* The _swprintf_c() flavor does the same thing as the _snwprintf
+* above, but, it also fixes a issue in the return value in the case
+* when there isn't enough space to write the null terminator
+* We don't fix this issue in _snwprintf because of backward
+* compatibility. In new code, however, _snwprintf is #defined to
+* _swprintf_c so users get the fix.
+*
+*endif
+*
+* Multi-thread: (1) Since there is no stream, this routine must
+* never try to get the stream lock (i.e., there is no stream
+* lock either). (2) Also, since there is only one statically
+* allocated 'fake' iob, we must lock/unlock to prevent collisions.
+*
+*Entry:
+* wchar_t *string - pointer to place to put output
+*ifdef _COUNT_
+* size_t count - max number of wide characters to put in buffer
+*endif
+* wchar_t *format - format string to control data format/number
+* of arguments followed by list of arguments, number and type
+* controlled by format string
+*
+*Exit:
+* returns number of wide characters printed
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+int __cdecl swprintf_s (
+ wchar_t *string,
+ size_t sizeInWords,
+ const wchar_t *format,
+ ...
+ )
+{
+ int ret;
+ va_list arglist;
+
+ va_start(arglist, format);
+
+ ret = vswprintf_s(string, sizeInWords, format, arglist);
+
+ va_end(arglist);
+
+ return ret;
+}
+
+int __cdecl _snwprintf_s (
+ wchar_t *string,
+ size_t sizeInWords,
+ size_t count,
+ const wchar_t *format,
+ ...
+ )
+{
+ int ret;
+ va_list arglist;
+
+ va_start(arglist, format);
+
+ ret = _vsnwprintf_s(string, sizeInWords, count, format, arglist);
+
+ va_end(arglist);
+
+ return ret;
+}