108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*-
|
|
* Code created by modifying iscanf.c which has following copyright.
|
|
*
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<viscanf>>, <<vfiscanf>>, <<vsiscanf>>---format argument list
|
|
|
|
INDEX
|
|
viscanf
|
|
INDEX
|
|
_viscanf_r
|
|
INDEX
|
|
vfiscanf
|
|
INDEX
|
|
_vfiscanf_r
|
|
INDEX
|
|
vsiscanf
|
|
INDEX
|
|
_vsiscanf_r
|
|
|
|
SYNOPSIS
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
int viscanf(const char *<[fmt]>, va_list <[list]>);
|
|
int vfiscanf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>);
|
|
int vsiscanf(const char *<[str]>, const char *<[fmt]>, va_list <[list]>);
|
|
|
|
int _viscanf_r(struct _reent *<[reent]>, const char *<[fmt]>,
|
|
va_list <[list]>);
|
|
int _vfiscanf_r(struct _reent *<[reent]>, FILE *<[fp]>, const char *<[fmt]>,
|
|
va_list <[list]>);
|
|
int _vsiscanf_r(struct _reent *<[reent]>, const char *<[str]>,
|
|
const char *<[fmt]>, va_list <[list]>);
|
|
|
|
DESCRIPTION
|
|
<<viscanf>>, <<vfiscanf>>, and <<vsiscanf>> are (respectively) variants
|
|
of <<iscanf>>, <<fiscanf>>, and <<siscanf>>. They differ only in
|
|
allowing their caller to pass the variable argument list as a
|
|
<<va_list>> object (initialized by <<va_start>>) rather than
|
|
directly accepting a variable number of arguments.
|
|
|
|
RETURNS
|
|
The return values are consistent with the corresponding functions:
|
|
<<viscanf>> returns the number of input fields successfully scanned,
|
|
converted, and stored; the return value does not include scanned
|
|
fields which were not stored.
|
|
|
|
If <<viscanf>> attempts to read at end-of-file, the return value
|
|
is <<EOF>>.
|
|
|
|
If no fields were stored, the return value is <<0>>.
|
|
|
|
The routines <<_viscanf_r>>, <<_vfiscanf_f>>, and <<_vsiscanf_r>> are
|
|
reentrant versions which take an additional first parameter which points to the
|
|
reentrancy structure.
|
|
|
|
PORTABILITY
|
|
These are newlib extensions.
|
|
|
|
Supporting OS subroutines required:
|
|
*/
|
|
|
|
#include <_ansi.h>
|
|
#include <reent.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include "local.h"
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
int
|
|
viscanf (const char *fmt,
|
|
va_list ap)
|
|
{
|
|
struct _reent *reent = _REENT;
|
|
|
|
_REENT_SMALL_CHECK_INIT (reent);
|
|
return __svfiscanf_r (reent, _stdin_r (reent), fmt, ap);
|
|
}
|
|
|
|
#endif /* !_REENT_ONLY */
|
|
|
|
int
|
|
_viscanf_r (struct _reent *ptr,
|
|
const char *fmt,
|
|
va_list ap)
|
|
{
|
|
_REENT_SMALL_CHECK_INIT (ptr);
|
|
return __svfiscanf_r (ptr, _stdin_r (ptr), fmt, ap);
|
|
}
|
|
|