stdio-common/tstscanf.c

   1 /* Copyright (C) 1991, 1992, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef  BSD
  20 #include </usr/include/stdio.h>
  21 #else
  22 #include <stdio.h>
  23 #endif
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27
  28 int
  29 main (int argc, char **argv)
  30 {
  31   char buf[BUFSIZ];
  32   FILE *in = stdin, *out = stdout;
  33   int x;
  34
  35   if (sscanf ("0", "%d", &x) != 1)
  36     exit (EXIT_FAILURE);
  37
  38   sscanf ("conversion] Zero flag Ze]ro#\n", "%*[^]] %[^#]\n", buf);
  39   if (strcmp (buf, "] Zero flag Ze]ro") != 0)
  40     {
  41       fputs ("test failed!\n", stderr);
  42       return 1;
  43     }
  44
  45   if (argc == 2 && !strcmp (argv[1], "-opipe"))
  46     {
  47       out = popen ("/bin/cat", "w");
  48       if (out == NULL)
  49         {
  50           perror ("popen: /bin/cat");
  51           exit (EXIT_FAILURE);
  52         }
  53     }
  54   else if (argc == 3 && !strcmp (argv[1], "-ipipe"))
  55     {
  56       sprintf (buf, "/bin/cat %s", argv[2]);
  57       in = popen (buf, "r");
  58     }
  59
  60   {
  61     char name[50];
  62     fprintf (out,
  63              "sscanf (\"thompson\", \"%%s\", name) == %d, name == \"%s\"\n",
  64              sscanf ("thompson", "%s", name),
  65              name);
  66     if (strcmp (name, "thompson") != 0)
  67       return 1;
  68   }
  69
  70   fputs ("Testing scanf (vfscanf)\n", out);
  71
  72   fputs ("Test 1:\n", out);
  73   {
  74     int n, i;
  75     float x;
  76     char name[50];
  77     n = fscanf (in, "%d%f%s", &i, &x, name);
  78     fprintf (out, "n = %d, i = %d, x = %f, name = \"%.50s\"\n",
  79              n, i, x, name);
  80     if (n != 3 || i != 25 || x != 5.432F || strcmp (name, "thompson"))
  81       return 1;
  82   }
  83   fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
  84   if (strcmp (buf, "\n"))
  85     return 1;
  86   fputs ("Test 2:\n", out);
  87   {
  88     int i;
  89     float x;
  90     char name[50];
  91     (void) fscanf (in, "%2d%f%*d %[0123456789]", &i, &x, name);
  92     fprintf (out, "i = %d, x = %f, name = \"%.50s\"\n", i, x, name);
  93     if (i != 56 || x != 789.0F || strcmp(name, "56"))
  94       return 1;
  95   }
  96   fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
  97   if (strcmp (buf, "a72\n"))
  98     return 1;
  99   fputs ("Test 3:\n", out);
 100   {
 101     static struct {
 102       int count;
 103       float quant;
 104       const char *units;
 105       const char *item;
 106     } ok[] = {
 107       { 3, 2.0F, "quarts", "oil" },
 108       { 2, -12.8F, "degrees", "" },
 109       { 0, 0.0F, "", "" },
 110       { 3, 10.0F, "LBS", "fertilizer" },
 111       { 3, 100.0F, "rgs", "energy" },
 112       { -1, 0.0F, "", "" }};
 113     size_t rounds = 0;
 114     float quant;
 115     char units[21], item[21];
 116     while (!feof (in) && !ferror (in))
 117       {
 118         int count;
 119
 120         if (rounds++ >= sizeof (ok) / sizeof (ok[0]))
 121           return 1;
 122
 123         quant = 0.0;
 124         units[0] = item[0] = '\0';
 125         count = fscanf (in, "%f%20s of %20s", &quant, units, item);
 126         (void) fscanf (in, "%*[^\n]");
 127         fprintf (out, "count = %d, quant = %f, item = %.21s, units = %.21s\n",
 128                  count, quant, item, units);
 129         if (count != ok[rounds-1].count || quant != ok[rounds-1].quant
 130             || strcmp (item, ok[rounds-1].item)
 131             || strcmp (units, ok[rounds-1].units))
 132           return 1;
 133       }
 134   }
 135   buf[0] = '\0';
 136   fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
 137   if (strcmp (buf, ""))
 138     return 1;
 139
 140   if (out != stdout)
 141     pclose (out);
 142
 143   fputs ("Test 3:\n", out);
 144   {
 145     int res, val, n;
 146
 147     res = sscanf ("-242", "%3o%n", &val, &n);
 148     printf ("res = %d, val = %d, n = %d\n", res, val, n);
 149     if (res != 1 || val != -20 || n != 3)
 150       return 1;
 151   }
 152
 153   fputs ("Test 4:\n", out);
 154   {
 155     double a = 0, b = 0;
 156     int res, n;
 157
 158     res = sscanf ("1234567", "%3lg%3lg%n", &a, &b, &n);
 159     printf ("res = %d, a = %g, b = %g, n = %d\n", res, a, b, n);
 160
 161     if (res != 2 || a != 123 || b != 456 || n != 6)
 162       return 1;
 163
 164     res = sscanf ("0", "%lg", &a);
 165     printf ("res = %d, a = %g\n", res, a);
 166
 167     if (res != 1 || a != 0)
 168       exit (EXIT_FAILURE);
 169
 170     res = sscanf ("1e3", "%lg%n", &a, &n);
 171     printf ("res = %d, a = %g, n = %d\n", res, a, n);
 172
 173     if (res != 1 || a != 1000 || n != 3)
 174       exit (EXIT_FAILURE);
 175   }
 176
 177   exit(EXIT_SUCCESS);
 178 }