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/* Test of scanf(): 'h' type modifier.
$Id: sscanf-h.c,v 1.1.2.3 2008/03/20 21:42:34 joerg_wunsch Exp $ */
#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
# define memcmp_P memcmp
#endif
/* Next variables are useful to debug the AVR. */
int vrslt = 1;
struct {
short i[10];
} 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 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 input. */
CHECK (-1, (*(char *)v.i == FILL), "", "%hd", v.i);
CHECK (-1, (*(char *)v.i == FILL), "", " %hd", v.i);
CHECK (-1, (*(char *)v.i == FILL), " ", " %hd", v.i);
CHECK (-1, (*(char *)v.i == FILL), " ", " %hd", v.i);
CHECK (-1, (*(char *)v.i == FILL), "\t\n\v\f\r", " %hd", v.i);
/* All possible conversions. */
CHECK (
8,
v.i[0] == 10 && v.i[1] == 20 && v.i[2] == 030 && v.i[3] == 040
&& v.i[4] == 0x50 && v.i[5] == 0x60 && v.i[6] == 0x70 && v.i[7] == 22
&& v.i[8] == 80,
"10 20 030 40 50 60 70 80",
"%hd %hu %hi %ho %hx %hX %hp %hn %hd",
v.i + 0, v.i + 1, v.i + 2, v.i + 3,
v.i + 4, v.i + 5, v.i + 6, v.i + 7,
v.i + 8);
/* Width field. */
CHECK (
1,
v.i[0] == 12 && *(unsigned char *)(v.i + 1) == FILL,
"123", "%2hd", v.i);
CHECK (
1,
v.i[0] == 98 && *(unsigned char *)(v.i + 1) == FILL,
"00000000009876", "%12hd", v.i);
/* Suppress a writing. */
CHECK (0, (*(unsigned char *)v.i == FILL), "123", "%*hd", v.i);
CHECK (2, (v.i[0] == 1) && (v.i[1] == 3) && (*(char *)(v.i + 2) == FILL),
"1 2 3", "%hd%*hd%hd", v.i, v.i + 1);
return 0;
}
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