libio/tst_swprintf.c

   1 #include <stdio.h>
   2 #include <wchar.h>
   3 #include <sys/types.h>
   4
   5
   6 static wchar_t buf[100];
   7 #define nbuf (sizeof (buf) / sizeof (buf[0]))
   8 static const struct
   9 {
  10   size_t n;
  11   const char *str;
  12   ssize_t exp;
  13 } tests[] =
  14   {
  15     { nbuf, "hello world", 11 },
  16     { 0, "hello world", -1 },
  17     { 0, "", -1 },
  18     { nbuf, "", 0 }
  19   };
  20
  21 int
  22 main (int argc, char *argv[])
  23 {
  24   size_t n;
  25   int result = 0;
  26
  27   puts ("test 1");
  28   n = swprintf (buf, nbuf, L"Hello %s", "world");
  29   if (n != 11)
  30     {
  31       printf ("incorrect return value: %zd instead of 11\n", n);
  32       result = 1;
  33     }
  34   else if (wcscmp (buf, L"Hello world") != 0)
  35     {
  36       printf ("incorrect string: L\"%ls\" instead of L\"Hello world\"\n", buf);
  37       result = 1;
  38     }
  39
  40   puts ("test 2");
  41   n = swprintf (buf, nbuf, L"Is this >%g< 3.1?", 3.1);
  42   if (n != 18)
  43     {
  44       printf ("incorrect return value: %zd instead of 18\n", n);
  45       result = 1;
  46     }
  47   else if (wcscmp (buf, L"Is this >3.1< 3.1?") != 0)
  48     {
  49       printf ("incorrect string: L\"%ls\" instead of L\"Is this >3.1< 3.1?\"\n",
  50               buf);
  51       result = 1;
  52     }
  53
  54   for (n = 0; n < sizeof (tests) / sizeof (tests[0]); ++n)
  55     {
  56       ssize_t res = swprintf (buf, tests[n].n, L"%s", tests[n].str);
  57
  58       if (tests[n].exp < 0 && res >= 0)
  59         {
  60           printf ("swprintf (buf, %Zu, L\"%%s\", \"%s\") expected to fail\n",
  61                   tests[n].n, tests[n].str);
  62           result = 1;
  63         }
  64       else if (tests[n].exp >= 0 && tests[n].exp != res)
  65         {
  66           printf ("swprintf (buf, %Zu, L\"%%s\", \"%s\") expected to return %Zd, but got %Zd\n",
  67                   tests[n].n, tests[n].str, tests[n].exp, res);
  68           result = 1;
  69         }
  70       else
  71         printf ("swprintf (buf, %Zu, L\"%%s\", \"%s\") OK\n",
  72                 tests[n].n, tests[n].str);
  73     }
  74
  75   if (swprintf (buf, nbuf, L"%.0s", "foo") != 0
  76       || wcslen (buf) != 0)
  77     {
  78       printf ("swprintf (buf, %Zu, L\"%%.0s\", \"foo\") create some output\n",
  79               nbuf);
  80       result = 1;
  81     }
  82
  83   if (swprintf (buf, nbuf, L"%.0ls", L"foo") != 0
  84       || wcslen (buf) != 0)
  85     {
  86       printf ("swprintf (buf, %Zu, L\"%%.0ls\", L\"foo\") create some output\n",
  87               nbuf);
  88       result = 1;
  89     }
  90
  91   return result;
  92 }