text: /* Copyright (c) 2008  Dmitry Xmelkov
     All rights reserved.
  
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are met:
  
     * Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
     * Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in
       the documentation and/or other materials provided with the
       distribution.
     * Neither the name of the copyright holders nor the names of
       contributors may be used to endorse or promote products derived
       from this software without specific prior written permission.
  
     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.
   */
  
  /* Test of scanf(): none conversion directives.
     $Id: sscanf-1.c 2282 2012-01-05 04:01:28Z dmix $	*/
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include "progmem.h"
  
  #ifdef	__AVR__
  # define ASSERT(expr)			\
      do {				\
  	if (!(expr)) exit(__LINE__);	\
      } while (0)
  # define EXIT(v)	exit (v)
  # if defined(__AVR_ATmega128__)
    /* ATmega128 has enough RAM for sprintf(), print to 0x2000 in XRAM. */
  #  define PRINTF(f...)	sprintf((char *)0x2000, f)
  # else
    /* small AVR */
  #  define PRINTF(f...)
  # endif
  #else
  # include <assert.h>
  # define ASSERT(expr)	assert (expr)
  # define EXIT(v)	exit ((v) < 256 ? (v) : 255)
  # define PRINTF(f...)	printf (f)
  # define sscanf_P	sscanf
  #endif
  
  /* Next variables are useful to debug the AVR.	*/
  int vrslt = 1;
  struct {
      char b;
  } v = { 1 };
  
  void Check (int line, int expval, int rslt)
  {
      vrslt = rslt;
      if (rslt != expval) {
  	PRINTF ("\nLine %d:  expect= %d, rslt= %d\n", line, expval, rslt);
  	EXIT (line);
      }
  }
  
  /* The sscanf() is called 4 times: SRAM and FLASH format, 2 values
     to fill before run.	*/
  #define CHECK(expval, ass_expr, str, fmt, ...)				\
      do {								\
  	PROGMEM static const char fmt_p[] = fmt;			\
  	char str_s[220];						\
  	char fmt_s[40];							\
  	char FILL;							\
  	int i;								\
  	int (* volatile vp)(const char *, const char *, ...);		\
  									\
  	ASSERT (sizeof(str_s) >= sizeof(str));				\
  	ASSERT (sizeof(fmt_s) >= sizeof(fmt_p));			\
  	strcpy_P (str_s, PSTR(str));					\
  	strcpy_P (fmt_s, fmt_p);					\
  									\
  	for (FILL = 0; FILL < 4; FILL++) {				\
  	    memset (&v, FILL, sizeof(v));				\
  	    vp = (FILL & 1) ? sscanf_P : sscanf;			\
  	    i = vp (str_s, (FILL & 1) ? fmt_p : fmt_s, ##__VA_ARGS__);	\
  	    Check (__LINE__, expval, i);				\
      	    ASSERT (ass_expr);						\
  	}								\
      } while (0)
  
  int main ()
  {
      /* Empty format string.	*/
      CHECK (0, 1, "", "");
      CHECK (0, 1, " ", "");
      CHECK (0, 1, "1", "");
      CHECK (0, 1, "a\n", "");
  
      /* Format directive is white-space (i.e. isspace) symbol.	*/
      CHECK (0, 1, "", " ");
      CHECK (0, 1, "", "\t");
      CHECK (0, 1, "", "\n");
      CHECK (0, 1, "", "\r");
      CHECK (0, 1, "", "\f");
      CHECK (0, 1, "", "\v");
      CHECK (0, 1, "", " \t\n\v\f\r");
  
      /* Format directive is ordinary character, no input.	*/
      CHECK (-1, 1, "", "a");
      CHECK (-1, 1, "a", "aa");
      
      /* Format directive is ordinary character, input is match.	*/
      CHECK (0, 1, "a", "a");
      CHECK (0, 1, "\001", "\001");
      CHECK (0, 1, "\377", "\377");
      CHECK (0, 1, "The_quick_brown_fox", "The_quick_brown_fox");
  
      /* Format directive is ordinary character, input is't match.	*/
      CHECK (0, 1, "A", "a");
      CHECK (0, 1, " ", "a");
      CHECK (0, 1, "\001", "a");
      CHECK (0, 1, "\377", "a");
  
      CHECK (0, 1, "aA", "aa");
      CHECK (0, 1, "a ", "aa");
      CHECK (0, 1, "a\001", "AA");
      CHECK (0, 1, "a\377", "AA");
      
      CHECK (0, 1, ".", "aaaaaaaa");
  
      return 0;
  }
  