usr/src/lib/libast/common/sfio/sfscanf.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #include        "sfhdr.h"
  23
  24 /*      Read formated data from a stream
  25 **
  26 **      Written by Kiem-Phong Vo.
  27 */
  28
  29 #if __STD_C
  30 int sfscanf(Sfio_t* f, const char* form, ...)
  31 #else
  32 int sfscanf(va_alist)
  33 va_dcl
  34 #endif
  35 {
  36         va_list args;
  37         reg int rv;
  38
  39 #if __STD_C
  40         va_start(args,form);
  41 #else
  42         reg Sfio_t*     f;
  43         reg char*       form;
  44         va_start(args);
  45         f = va_arg(args,Sfio_t*);
  46         form = va_arg(args,char*);
  47 #endif
  48
  49         rv = (f && form) ? sfvscanf(f,form,args) : -1;
  50         va_end(args);
  51         return rv;
  52 }
  53
  54 #if __STD_C
  55 int sfvsscanf(const char* s, const char* form, va_list args)
  56 #else
  57 int sfvsscanf(s, form, args)
  58 char*   s;
  59 char*   form;
  60 va_list args;
  61 #endif
  62 {
  63         Sfio_t  f;
  64
  65         if(!s || !form)
  66                 return -1;
  67
  68         /* make a fake stream */
  69         SFCLEAR(&f,NIL(Vtmutex_t*));
  70         f.flags = SF_STRING|SF_READ;
  71         f.bits = SF_PRIVATE;
  72         f.mode = SF_READ;
  73         f.size = strlen((char*)s);
  74         f.data = f.next = f.endw = (uchar*)s;
  75         f.endb = f.endr = f.data+f.size;
  76
  77         return sfvscanf(&f,form,args);
  78 }
  79
  80 #if __STD_C
  81 int sfsscanf(const char* s, const char* form,...)
  82 #else
  83 int sfsscanf(va_alist)
  84 va_dcl
  85 #endif
  86 {
  87         va_list         args;
  88         reg int         rv;
  89 #if __STD_C
  90         va_start(args,form);
  91 #else
  92         reg char*       s;
  93         reg char*       form;
  94         va_start(args);
  95         s = va_arg(args,char*);
  96         form = va_arg(args,char*);
  97 #endif
  98
  99         rv = (s && form) ? sfvsscanf(s,form,args) : -1;
 100         va_end(args);
 101         return rv;
 102 }