Source code of Windows XP (NT5)
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/***
*fprintf.c - print formatted data to stream
*
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines fprintf() - print formatted data to stream
*
*Revision History:
* 09-02-83 RN initial version
* 04-13-87 JCR added const to declaration
* 06-24-87 JCR (1) Made declaration conform to ANSI prototype and use
* the va_ macros; (2) removed SS_NE_DS conditionals.
* 11-05-87 JCR Multi-thread support
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 05-27-88 PHG Merged DLL and normal versions
* 06-14-88 JCR Use near pointer to reference _iob[] entries
* 08-25-88 GJF Don't use FP_OFF() macro for the 386
* 08-17-89 GJF Clean up, now specific to OS/2 2.0 (i.e., 386 flat
* model). Also fixed copyright and indents.
* 02-15-90 GJF Fixed copyright
* 03-19-90 GJF Made calling type _CALLTYPE2, added #include
* <cruntime.h> and removed #include <register.h>.
* 07-23-90 SBM Replaced <assertm.h> by <assert.h>
* 10-02-90 GJF New-style function declarator.
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
* 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.
* 02-27-98 GJF Exception-safe locking.
*
*******************************************************************************/
#include <cruntime.h>
#include <stdio.h>
#include <dbgint.h>
#include <stdarg.h>
#include <file2.h>
#include <internal.h>
#include <mtdll.h>
/***
*int fprintf(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
* char *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 characters printed
*
*Exceptions:
*
*******************************************************************************/
int __cdecl fprintf (
FILE *str,
const char *format,
...
)
/*
* 'F'ile (stream) 'PRINT', 'F'ormatted
*/
{
va_list(arglist);
REG1 FILE *stream;
REG2 int buffing;
int retval;
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 = _output(stream,format,arglist);
_ftbuf(buffing, stream);
#ifdef _MT
}
__finally {
_unlock_str(stream);
}
#endif
return(retval);
}