stdio-common/scanf14.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <wchar.h>
   5
   6 #define FAIL() \
   7   do {                                                  \
   8     result = 1;                                         \
   9     printf ("test at line %d failed\n", __LINE__);      \
  10   } while (0)
  11
  12 int
  13 main (void)
  14 {
  15   wchar_t *lsp;
  16   char *sp;
  17   float f;
  18   double d;
  19   char c[8];
  20   int result = 0;
  21
  22   if (sscanf (" 0.25s x", "%e%3c", &f, c) != 2)
  23     FAIL ();
  24   else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
  25     FAIL ();
  26   if (sscanf (" 1.25s x", "%as%2c", &sp, c) != 2)
  27     FAIL ();
  28   else
  29     {
  30       if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
  31         FAIL ();
  32       memset (sp, 'x', sizeof "1.25s");
  33       free (sp);
  34     }
  35   if (sscanf (" 2.25s x", "%las%2c", &d, c) != 2)
  36     FAIL ();
  37   else if (d != 2.25 || memcmp (c, " x", 2) != 0)
  38     FAIL ();
  39   if (sscanf (" 3.25S x", "%4aS%3c", &lsp, c) != 2)
  40     FAIL ();
  41   else
  42     {
  43       if (wcscmp (lsp, L"3.25") != 0 || memcmp (c, "S x", 3) != 0)
  44         FAIL ();
  45       memset (lsp, 'x', sizeof L"3.25");
  46       free (lsp);
  47     }
  48   if (sscanf ("4.25[0-9.] x", "%a[0-9.]%8c", &sp, c) != 2)
  49     FAIL ();
  50   else
  51     {
  52       if (strcmp (sp, "4.25") != 0 || memcmp (c, "[0-9.] x", 8) != 0)
  53         FAIL ();
  54       memset (sp, 'x', sizeof "4.25");
  55       free (sp);
  56     }
  57   if (sscanf ("5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2)
  58     FAIL ();
  59   else if (d != 5.25 || memcmp (c, " x", 2) != 0)
  60     FAIL ();
  61
  62   const char *tmpdir = getenv ("TMPDIR");
  63   if (tmpdir == NULL || tmpdir[0] == '\0')
  64     tmpdir = "/tmp";
  65
  66   char fname[strlen (tmpdir) + sizeof "/tst-scanf14.XXXXXX"];
  67   sprintf (fname, "%s/tst-scanf14.XXXXXX", tmpdir);
  68   if (fname == NULL)
  69     FAIL ();
  70
  71   /* Create a temporary file.   */
  72   int fd = mkstemp (fname);
  73   if (fd == -1)
  74     FAIL ();
  75
  76   FILE *fp = fdopen (fd, "w+");
  77   if (fp == NULL)
  78     FAIL ();
  79   else
  80     {
  81       if (fputs (" 1.25s x", fp) == EOF)
  82         FAIL ();
  83       if (fseek (fp, 0, SEEK_SET) != 0)
  84         FAIL ();
  85       if (fscanf (fp, "%as%2c", &sp, c) != 2)
  86         FAIL ();
  87       else
  88         {
  89           if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
  90             FAIL ();
  91           memset (sp, 'x', sizeof "1.25s");
  92           free (sp);
  93         }
  94
  95       if (freopen (fname, "r", stdin) == NULL)
  96         FAIL ();
  97       else
  98         {
  99           if (scanf ("%as%2c", &sp, c) != 2)
 100             FAIL ();
 101           else
 102             {
 103               if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
 104                 FAIL ();
 105               memset (sp, 'x', sizeof "1.25s");
 106               free (sp);
 107             }
 108         }
 109
 110       fclose (fp);
 111     }
 112
 113   remove (fname);
 114
 115   return result;
 116 }