Subversion Repositories openrisc_2011-10-31

/*-

 * 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

ANSI_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]>);

TRAD_SYNOPSIS

        #include <stdio.h>

        #include <varargs.h>

        int viscanf( <[fmt]>, <[ist]>)

        char *<[fmt]>;

        va_list <[list]>;

        int vfiscanf( <[fp]>, <[fmt]>, <[list]>)

        FILE *<[fp]>;

        char *<[fmt]>;

        va_list <[list]>;

        int vsiscanf( <[str]>, <[fmt]>, <[list]>)

        char *<[str]>;

        char *<[fmt]>;

        va_list <[list]>;

        int _viscanf_r( <[reent]>, <[fmt]>, <[ist]>)

        struct _reent *<[reent]>;

        char *<[fmt]>;

        va_list <[list]>;

        int _vfiscanf_r( <[reent]>, <[fp]>, <[fmt]>, <[list]>)

        struct _reent *<[reent]>;

        FILE *<[fp]>;

        char *<[fmt]>;

        va_list <[list]>;

        int _vsiscanf_r( <[reent]>, <[str]>, <[fmt]>, <[list]>)

        struct _reent *<[reent]>;

        char *<[str]>;

        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>

#ifdef _HAVE_STDC

#include <stdarg.h>

#else

#include <varargs.h>

#endif

#include "local.h"

#ifndef _REENT_ONLY

int

_DEFUN(viscanf, (fmt, ap),

       _CONST char *fmt _AND

       va_list ap)

{

  _REENT_SMALL_CHECK_INIT (_REENT);

  return __svfiscanf_r (_REENT, _stdin_r (_REENT), fmt, ap);

}

#endif /* !_REENT_ONLY */

int

_DEFUN(_viscanf_r, (ptr, fmt, ap),

       struct _reent *ptr _AND

       _CONST char *fmt   _AND

       va_list ap)

{

  _REENT_SMALL_CHECK_INIT (ptr);

  return __svfiscanf_r (ptr, _stdin_r (ptr), fmt, ap);

}