kolibrios/programs/develop/open watcom/trunk/clib/streamio/fprtf.c

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/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: Implementation of printf() - formatted output.
*
****************************************************************************/
#include "variety.h"
#include "widechar.h"
#include <stdio.h>
#include <stdarg.h>
#include "rtdata.h"
#include "fileacc.h"
#include "printf.h"
#include "fprtf.h"
#include "orient.h"
#include "flush.h"
#include "streamio.h"
/*
* file_putc -- write a character to a file
*/
static slib_callback_t file_putc; // setup calling convention
static void __SLIB_CALLBACK file_putc( SPECS __SLIB *specs, int op_char )
{
__F_NAME(fputc,fputwc)( op_char, (FILE *)specs->_dest );
specs->_output_count++;
}
int __F_NAME(__fprtf,__fwprtf)( FILE *fp, const CHAR_TYPE *format, va_list arg )
{
int not_buffered;
int amount_written;
unsigned oflag;
slib_callback_t *tmp;
_ValidFile( fp, 0 );
_AccessFile( fp );
/*** Deal with stream orientation ***/
ORIENT_STREAM(fp,0);
oflag = fp->_flag & (_SFERR | _EOF); /* 06-sep-91 */
fp->_flag &= ~(_SFERR | _EOF);
if( _FP_BASE(fp) == NULL ) {
__ioalloc( fp ); /* allocate buffer */
}
not_buffered = 0;
if( fp->_flag & _IONBF ) {
not_buffered = 1;
fp->_flag &= ~_IONBF;
fp->_flag |= _IOFBF;
}
#if defined( __386__ ) && defined( __QNX__ )
/* avoid some segment relocations for 32-bit QNX */
tmp = (void (*)())file_putc;
#else
tmp = file_putc;
#endif
amount_written = __F_NAME(__prtf,__wprtf)( fp, format, arg, tmp );
if( not_buffered ) {
fp->_flag &= ~_IOFBF;
fp->_flag |= _IONBF;
__flush( fp );
}
if( ferror( fp ) )
amount_written = -1; /* 06-sep-91 */
fp->_flag |= oflag;
_ReleaseFile( fp );
return( amount_written );
}