Source code of Windows XP (NT5)
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/***
*fwprintf.c - print formatted data to stream
*
* Copyright (c) 1992-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines fwprintf() - print formatted data to stream
*
*Revision History:
* 05-16-92 KRS Created from fprintf.c.
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
* 02-07-94 CFW POSIXify.
* 09-06-94 CFW Replace MTHREAD with _MT.
* 02-06-94 CFW assert -> _ASSERTE.
* 03-07-95 GJF _[un]lock_str macros now take FILE * arg.
* 03-02-98 GJF Exception-safe locking.
*
*******************************************************************************/
#ifndef _POSIX_
#include <cruntime.h>
#include <stdio.h>
#include <dbgint.h>
#include <stdarg.h>
#include <file2.h>
#include <internal.h>
#include <mtdll.h>
/***
*int fwprintf(stream, format, ...) - print formatted data
*
*Purpose:
* Prints formatted data on the given using the format string to
* format data and getting as many arguments as called for
* _output does the real work here
*
*Entry:
* FILE *stream - stream to print on
* wchar_t *format - format string to control data format/number of arguments
* followed by arguments to print, number and type controlled by
* format string
*
*Exit:
* returns number of wide characters printed
*
*Exceptions:
*
*******************************************************************************/
int __cdecl fwprintf (
FILE *str,
const wchar_t *format,
...
)
/*
* 'F'ile (stream) 'W'char_t 'PRINT', 'F'ormatted
*/
{
va_list(arglist);
REG1 FILE *stream;
REG2 int buffing;
int retval;
// UNDONE: make va_start work with wchar_t format string
va_start(arglist, format);
_ASSERTE(str != NULL);
_ASSERTE(format != NULL);
/* Init stream pointer */
stream = str;
#ifdef _MT
_lock_str(stream);
__try {
#endif
buffing = _stbuf(stream);
retval = _woutput(stream,format,arglist);
_ftbuf(buffing, stream);
#ifdef _MT
}
__finally {
_unlock_str(stream);
}
#endif
return(retval);
}
#endif /* _POSIX_ */