vsscanf.c

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00001 /*
00002  * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  */
00033 
00034 /*
00035  * $Log: vsscanf.c,v $
00036  * Revision 1.4  2006/05/05 15:43:07  freckle
00037  * Fixes for bugs #1477658 and #1477676
00038  *
00039  * Revision 1.3  2004/03/16 16:48:27  haraldkipp
00040  * Added Jan Dubiec's H8/300 port.
00041  *
00042  * Revision 1.2  2003/07/20 16:53:02  haraldkipp
00043  * Bugfix: sscanf is now working.
00044  *
00045  * Revision 1.1.1.1  2003/05/09 14:40:35  haraldkipp
00046  * Initial using 3.2.1
00047  *
00048  * Revision 1.1  2003/02/04 17:49:09  harald
00049  * *** empty log message ***
00050  *
00051  */
00052 
00053 #include "nut_io.h"
00054 
00055 #include <string.h>
00056 #include <io.h>
00057 
00062 
00063 static int _sgetb(int fd, void *buffer, size_t count)
00064 {
00065     char **spp = (char **) ((uptr_t) fd);
00066     char  *dst = (char*) buffer;
00067     size_t result = 0;
00068     
00069     while( count > 0 && **spp != 0) {
00070         *dst++ = *(*spp)++;  // increment not spp but *spp
00071         count--;
00072         result++;
00073     }
00074     
00075     return result;
00076 }
00077 
00091 int vsscanf(CONST char *string, CONST char *fmt, va_list ap)
00092 {
00093     /* Bugfix kindly provided by Tomasz Niewegowski. */
00094     CONST char *ptr = string;
00095 
00096     return _getf(_sgetb, (int) ((uptr_t) &ptr), fmt, ap);
00097 }
00098 

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