bootx.tproj/libclite.subproj/sprintf.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright 1993 NeXT, Inc.
  27  * All rights reserved.
  28  */
  29 /*
  30  *  sprintf.c - sprintf and helper functions.
  31  *
  32  *  Copyright (c) 1998-2002 Apple Computer, Inc.
  33  *
  34  *  DRI: Josh de Cesare
  35  */
  36
  37 #include <libclite.h>
  38
  39 struct putc_info {
  40     char *str;
  41     char *last_str;
  42 };
  43
  44 static void
  45 sputc(
  46     int c,
  47     struct putc_info *pi
  48 )
  49 {
  50     if (pi->last_str)
  51         if (pi->str == pi->last_str) {
  52             *(pi->str) = '\0';
  53             return;
  54         }
  55     *(pi->str)++ = c;
  56 }
  57
  58 /*VARARGS1*/
  59 int sprintf(char *str, const char *fmt, ...)
  60 {
  61     va_list ap;
  62     struct putc_info pi;
  63
  64     va_start(ap, fmt);
  65     pi.str = str;
  66     pi.last_str = 0;
  67     prf(fmt, (unsigned int *)ap, sputc, &pi);
  68     *pi.str = '\0';
  69     va_end(ap);
  70     return 0;
  71 }
  72
  73 /*VARARGS1*/
  74 int slvprintf(char *str, int len, const char *fmt, va_list ap )
  75 {
  76     struct putc_info pi;
  77     pi.str = str;
  78     pi.last_str = str + len - 1;
  79     prf(fmt, (unsigned int *)ap, sputc, &pi);
  80     *pi.str = '\0';
  81     return (pi.str - str);
  82 }