kolibrios-gitea/programs/develop/open watcom/trunk/clib/streamio/fprtf_s.c
Sergey Semyonov (Serge) 3be3768ce0 update CLib
git-svn-id: svn://kolibrios.org@614 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-08-28 10:31:46 +00:00

109 lines
3.6 KiB
C

/****************************************************************************
*
* 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 __fprtf_s() - safe formatted output.
*
****************************************************************************/
#include "variety.h"
#include "saferlib.h"
#include "widechar.h"
#include <stdio.h>
#include <stdarg.h>
#include "rtdata.h"
#include "fileacc.h"
#include "printf.h"
#include "fprtf_s.h"
#include "orient.h"
extern void __ioalloc( FILE * );
extern int __flush( FILE * );
/*
* 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_s,__fwprtf_s)( FILE * __restrict stream,
const CHAR_TYPE * __restrict format, va_list arg )
{
int not_buffered;
int amount_written;
unsigned oflag;
const char *msg = NULL; /* doubles as error indicator */
/* Check for runtime-constraints before grabbing file lock */
/* stream not null */
/* format not null */
if( __check_constraint_nullptr_msg( msg, stream ) &&
__check_constraint_nullptr_msg( msg, format ) ) {
_ValidFile( stream, 0 );
_AccessFile( stream );
/*** Deal with stream orientation ***/
ORIENT_STREAM(stream,0);
oflag = stream->_flag & (_SFERR | _EOF);
stream->_flag &= ~(_SFERR | _EOF);
if( _FP_BASE(stream) == NULL ) {
__ioalloc( stream ); /* allocate buffer */
}
not_buffered = 0;
if( stream->_flag & _IONBF ) {
not_buffered = 1;
stream->_flag &= ~_IONBF;
stream->_flag |= _IOFBF;
}
amount_written = __F_NAME(__prtf_s,__wprtf_s)( stream, format, arg, &msg, file_putc );
if( not_buffered ) {
stream->_flag &= ~_IOFBF;
stream->_flag |= _IONBF;
__flush( stream );
}
if( ferror( stream ) )
amount_written = -1;
stream->_flag |= oflag;
_ReleaseFile( stream );
}
if( msg != NULL ) {
/* There was a constraint violation; call the handler */
__rtct_fail( __func__, msg, NULL );
amount_written = -1;
}
return( amount_written );
}