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sfscanf.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*                  Copyright (c) 1985-2005 AT&T Corp.                  *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                            by AT&T Corp.                             *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#include    "sfhdr.h"

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

#if __STD_C
int sfscanf(Sfio_t* f, const char* form, ...)
#else
int sfscanf(va_alist)
va_dcl
#endif
{
      va_list     args;
      reg int     rv;

#if __STD_C
      va_start(args,form);
#else
      reg Sfio_t* f;
      reg char*   form;
      va_start(args);
      f = va_arg(args,Sfio_t*);
      form = va_arg(args,char*);
#endif

      rv = (f && form) ? sfvscanf(f,form,args) : -1;
      va_end(args);
      return rv;
}

#if __STD_C
int sfvsscanf(const char* s, const char* form, va_list args)
#else
int sfvsscanf(s, form, args)
char* s;
char* form;
va_list     args;
#endif
{
      Sfio_t      f;

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

      /* make a fake stream */
      SFCLEAR(&f,NIL(Vtmutex_t*));
      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);
}

#if __STD_C
int sfsscanf(const char* s, const char* form,...)
#else
int sfsscanf(va_alist)
va_dcl
#endif
{
      va_list           args;
      reg int           rv;
#if __STD_C
      va_start(args,form);
#else
      reg char*   s;
      reg char*   form;
      va_start(args);
      s = va_arg(args,char*);
      form = va_arg(args,char*);
#endif

      rv = (s && form) ? sfvsscanf(s,form,args) : -1;
      va_end(args);
      return rv;
}

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