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