/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
*          Copyright (c) 2020-2022 Contributors to ksh 93u+m           *
*                      and is licensed under the                       *
*                 Eclipse Public License, Version 2.0                  *
*                                                                      *
*                A copy of the License is available at                 *
*      https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html      *
*         (with md5 checksum 84283fa8859daf213bdda5a9f8d1be1d)         *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                  Martijn Dekker <martijn@inlv.org>                   *
*                                                                      *
***********************************************************************/
#include	"sfhdr.h"

/*	Read formatted data from a stream
**
**	Written by Kiem-Phong Vo.
*/

int sfscanf(Sfio_t* f, const char* form, ...)
{
	va_list	args;
	reg int	rv;
	va_start(args,form);
	rv = (f && form) ? sfvscanf(f,form,args) : -1;
	va_end(args);
	return rv;
}

int sfvsscanf(const char* s, const char* form, va_list args)
{
	Sfio_t	f;

	if(!s || !form)
		return -1;

	/* make a fake stream */
	SFCLEAR(&f);
	f.flags = SF_STRING|SF_READ;
	f.bits = SF_PRIVATE;
	f.mode = SF_READ;
	f.size = strlen((char*)s);
	f.data = f.next = f.endw = (uchar*)s;
	f.endb = f.endr = f.data+f.size;

	return sfvscanf(&f,form,args);
}

int sfsscanf(const char* s, const char* form,...)
{
	va_list		args;
	reg int		rv;
	va_start(args,form);
	rv = (s && form) ? sfvsscanf(s,form,args) : -1;
	va_end(args);
	return rv;
}
