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/* Test of scanf(): 's' conversion directive.
$Id: sscanf-s2.c,v 1.1.2.3 2008/03/20 21:42:35 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 c;
char s[8];
} v[6] = { {1, {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 ()
{
/* Width field. */
CHECK (1, !strcmp_P(v[0].s, PSTR("A")), "A", "%1s", v[0].s);
CHECK (1, !strcmp_P(v[0].s, PSTR("A")), "ABCD", "%1s", v[0].s);
CHECK (1, !strcmp_P(v[0].s, PSTR("AB")), "ABCD", "%2s", v[0].s);
CHECK (2, !memcmp_P(v[0].s, PSTR("CD\000AB\000"), 6),
"ABCD", "%2s%2s", v[0].s + 3, v[0].s);
CHECK (1, !strcmp_P(v[0].s, PSTR("The_quick_b")),
"The_quick_brown_fox", "%11s", v[0].s);
/* Suppress and width. */
CHECK (0, (v[0].s[0] == FILL), "A", "%*1s", v[0].s);
CHECK (0, (v[0].s[0] == FILL), "AA", "%*2s", v[0].s);
/* Split long string. */
CHECK (
6,
!strcmp_P (v[0].s, PSTR("ABCDE"))
&& !strcmp_P (v[1].s, PSTR("FGHIJ"))
&& !strcmp_P (v[2].s, PSTR("KLMNO"))
&& !strcmp_P (v[3].s, PSTR("PQRST"))
&& !strcmp_P (v[4].s, PSTR("UVWXY"))
&& !strcmp_P (v[5].s, PSTR("Z")),
"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
"%5s%5s %5s %5s\t%5s\n%5s",
v[0].s, v[1].s, v[2].s, v[3].s, v[4].s, v[5].s);
/* Zero width. */
#ifdef __AVR__
CHECK (0, (v[0].s[0] == FILL), "A", "%0s", v[0].s);
#else
CHECK (1, !strcmp_P(v[0].s, PSTR("A")), "A", "%0s", v[0].s); /* ??? */
#endif
/* Left width digit is 0. */
CHECK (
2,
!strcmp_P(v[0].s, PSTR("A")) && !strcmp_P(v[1].s, PSTR("BC")),
"ABCD",
"%01s %02s", v[0].s, v[1].s);
/* Invalid symbol after '%'. */
CHECK (0, (v[0].s[0] == FILL), "A", "% s", v[0].s);
CHECK (0, (v[0].s[0] == FILL), "A", "%-s", v[0].s);
CHECK (0, (v[0].s[0] == FILL), "A", "%+s", v[0].s);
CHECK (0, (v[0].s[0] == FILL), "A", "%.s", v[0].s);
CHECK (0, (v[0].s[0] == FILL), "A", "%#s", v[0].s);
/* The length modifier. */
CHECK (1, !strcmp_P(v[0].s, PSTR("A")), "A", "%hs", v[0].s);
CHECK (1, !strcmp_P(v[0].s, PSTR("A")), "A", "%ls", v[0].s);
return 0;
}
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