usr/src/lib/libast/common/sfio/sfprintf.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 /*      Print data with a given format
  25 **
  26 **      Written by Kiem-Phong Vo.
  27 */
  28
  29 #if __STD_C
  30 int sfprintf(Sfio_t* f, const char* form, ...)
  31 #else
  32 int sfprintf(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         rv = sfvprintf(f,form,args);
  49
  50         va_end(args);
  51         return rv;
  52 }
  53
  54 #if __STD_C
  55 ssize_t sfvsprintf(char* s, size_t n, const char* form, va_list args)
  56 #else
  57 ssize_t sfvsprintf(s, n, form, args)
  58 char*   s;
  59 size_t  n;
  60 char*   form;
  61 va_list args;
  62 #endif
  63 {
  64         Sfio_t  *f;
  65         ssize_t rv;
  66
  67         /* make a temp stream */
  68         if(!(f = sfnew(NIL(Sfio_t*),NIL(char*),(size_t)SF_UNBOUND,
  69                         -1,SF_WRITE|SF_STRING)) )
  70                 return -1;
  71
  72         if((rv = sfvprintf(f,form,args)) >= 0 )
  73         {       if(s && n > 0)
  74                 {       if((rv+1) >= n)
  75                                 n--;
  76                         else
  77                                 n = rv;
  78                         memcpy(s, f->data, n);
  79                         s[n] = 0;
  80                 }
  81                 _Sfi = rv;
  82         }
  83
  84         sfclose(f);
  85
  86         return rv;
  87 }
  88
  89 #if __STD_C
  90 ssize_t sfsprintf(char* s, size_t n, const char* form, ...)
  91 #else
  92 ssize_t sfsprintf(va_alist)
  93 va_dcl
  94 #endif
  95 {
  96         va_list args;
  97         ssize_t rv;
  98
  99 #if __STD_C
 100         va_start(args,form);
 101 #else
 102         reg char*       s;
 103         reg size_t      n;
 104         reg char*       form;
 105         va_start(args);
 106         s = va_arg(args,char*);
 107         n = va_arg(args,size_t);
 108         form = va_arg(args,char*);
 109 #endif
 110
 111         rv = sfvsprintf(s,n,form,args);
 112         va_end(args);
 113
 114         return rv;
 115 }