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/* Test of scanf(): 'c' conversion directive.
$Id: sscanf-c1.c,v 1.1.2.3 2008/03/20 21:42:33 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 {
char s[12];
} 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, 1, "", "%c", v.s);
CHECK (-1, 1, "", " %c", v.s);
CHECK (-1, 1, " ", " %c", v.s);
CHECK (-1, 1, " ", " %c", v.s);
CHECK (-1, 1, "\t\n\v\f\r", " %c", v.s);
/* Normal conversion. */
CHECK (1, (v.s[0] == 'a'), "a", "%c", v.s);
CHECK (3, !memcmp_P (v.s, PSTR(" \001\377"), 3),
" \001\377", "%c%c%c", v.s, v.s + 1, v.s + 2);
CHECK (4, !memcmp_P (v.s, PSTR("DCBA"), 4),
"ABCD", "%c%c%c%c", v.s + 3, v.s + 2, v.s + 1, v.s);
/* Input match. */
CHECK (1, (v.s[0] == 'q'), "%The %q", "%%The %%%c", v.s);
/* Suppress a writing. */
CHECK (0, (v.s[0] == FILL), "a", "%*c", v.s);
CHECK (3, !memcmp_P(v.s, PSTR("ACD"), 3),
"ABCD", "%c%*c%c%c", v.s, v.s + 1, v.s + 2);
/* Width field. */
CHECK (1, (v.s[0] == 'A'), "A", "%1c", v.s);
CHECK (1, !memcmp_P(v.s, PSTR("AB"), 2), "AB", "%2c", v.s);
CHECK (1, !memcmp_P(v.s, PSTR("The_quick_br"), 12),
"The_quick_brown_fox", "%12c", v.s);
CHECK (1, !memcmp_P(v.s, PSTR("A\t D"), 4), "A\t D", "%4c", v.s);
CHECK (2, !memcmp_P(v.s, PSTR("3412"), 4),
"1234", "%2c%2c", v.s + 2, v.s);
/* Suppress and width. */
CHECK (0, (v.s[0] == FILL), "A", "%*1c", v.s);
CHECK (0, (v.s[0] == FILL), "AA", "%*2c", v.s);
return 0;
}
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