stdio-common/scanf16.c

   1 #include <stdarg.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <wchar.h>
   6
   7 #define FAIL() \
   8   do {                                                  \
   9     result = 1;                                         \
  10     printf ("test at line %d failed\n", __LINE__);      \
  11   } while (0)
  12
  13 static int
  14 xsscanf (const char *str, const char *fmt, ...)
  15 {
  16   va_list ap;
  17   va_start (ap, fmt);
  18   int ret = vsscanf (str, fmt, ap);
  19   va_end (ap);
  20   return ret;
  21 }
  22
  23 static int
  24 xscanf (const char *fmt, ...)
  25 {
  26   va_list ap;
  27   va_start (ap, fmt);
  28   int ret = vscanf (fmt, ap);
  29   va_end (ap);
  30   return ret;
  31 }
  32
  33 static int
  34 xfscanf (FILE *f, const char *fmt, ...)
  35 {
  36   va_list ap;
  37   va_start (ap, fmt);
  38   int ret = vfscanf (f, fmt, ap);
  39   va_end (ap);
  40   return ret;
  41 }
  42
  43 int
  44 main (void)
  45 {
  46   wchar_t *lsp;
  47   char *sp;
  48   float f;
  49   double d;
  50   char c[8];
  51   int result = 0;
  52
  53   if (xsscanf (" 0.25s x", "%e%3c", &f, c) != 2)
  54     FAIL ();
  55   else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
  56     FAIL ();
  57   if (xsscanf (" 1.25s x", "%as%2c", &sp, c) != 2)
  58     FAIL ();
  59   else
  60     {
  61       if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
  62         FAIL ();
  63       memset (sp, 'x', sizeof "1.25s");
  64       free (sp);
  65     }
  66   if (xsscanf (" 2.25s x", "%las%2c", &d, c) != 2)
  67     FAIL ();
  68   else if (d != 2.25 || memcmp (c, " x", 2) != 0)
  69     FAIL ();
  70   if (xsscanf (" 3.25S x", "%4aS%3c", &lsp, c) != 2)
  71     FAIL ();
  72   else
  73     {
  74       if (wcscmp (lsp, L"3.25") != 0 || memcmp (c, "S x", 3) != 0)
  75         FAIL ();
  76       memset (lsp, 'x', sizeof L"3.25");
  77       free (lsp);
  78     }
  79   if (xsscanf ("4.25[0-9.] x", "%a[0-9.]%8c", &sp, c) != 2)
  80     FAIL ();
  81   else
  82     {
  83       if (strcmp (sp, "4.25") != 0 || memcmp (c, "[0-9.] x", 8) != 0)
  84         FAIL ();
  85       memset (sp, 'x', sizeof "4.25");
  86       free (sp);
  87     }
  88   if (xsscanf ("5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2)
  89     FAIL ();
  90   else if (d != 5.25 || memcmp (c, " x", 2) != 0)
  91     FAIL ();
  92
  93   const char *tmpdir = getenv ("TMPDIR");
  94   if (tmpdir == NULL || tmpdir[0] == '\0')
  95     tmpdir = "/tmp";
  96
  97   char fname[strlen (tmpdir) + sizeof "/tst-scanf16.XXXXXX"];
  98   sprintf (fname, "%s/tst-scanf16.XXXXXX", tmpdir);
  99   if (fname == NULL)
 100     FAIL ();
 101
 102   /* Create a temporary file.   */
 103   int fd = mkstemp (fname);
 104   if (fd == -1)
 105     FAIL ();
 106
 107   FILE *fp = fdopen (fd, "w+");
 108   if (fp == NULL)
 109     FAIL ();
 110   else
 111     {
 112       if (fputs (" 1.25s x", fp) == EOF)
 113         FAIL ();
 114       if (fseek (fp, 0, SEEK_SET) != 0)
 115         FAIL ();
 116       if (xfscanf (fp, "%as%2c", &sp, c) != 2)
 117         FAIL ();
 118       else
 119         {
 120           if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
 121             FAIL ();
 122           memset (sp, 'x', sizeof "1.25s");
 123           free (sp);
 124         }
 125
 126       if (freopen (fname, "r", stdin) == NULL)
 127         FAIL ();
 128       else
 129         {
 130           if (xscanf ("%as%2c", &sp, c) != 2)
 131             FAIL ();
 132           else
 133             {
 134               if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
 135                 FAIL ();
 136               memset (sp, 'x', sizeof "1.25s");
 137               free (sp);
 138             }
 139         }
 140
 141       fclose (fp);
 142     }
 143
 144   remove (fname);
 145
 146   return result;
 147 }