ctype/test_ctype.c

   1 /* Copyright (C) 1991-2024 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <limits.h>
  19 #include <ctype.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22
  23 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
  24 #define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
  25 #define XOR(e,f) (((e) && !(f)) || (!(e) && (f)))
  26
  27 #ifdef  __GNUC__
  28 __inline
  29 #endif
  30 static void
  31 print_char (unsigned char c)
  32 {
  33   printf("%d/", (int) c);
  34   if (isgraph(c))
  35     printf("'%c'", c);
  36   else
  37     printf("'\\%.3o'", c);
  38 }
  39
  40 int
  41 main (int argc, char **argv)
  42 {
  43   unsigned short int c;
  44   int lose = 0;
  45
  46 #define TRYEM do {                                                            \
  47       TRY (isascii);                                                          \
  48       TRY (isalnum);                                                          \
  49       TRY (isalpha);                                                          \
  50       TRY (iscntrl);                                                          \
  51       TRY (isdigit);                                                          \
  52       TRY (isgraph);                                                          \
  53       TRY (islower);                                                          \
  54       TRY (isprint);                                                          \
  55       TRY (ispunct);                                                          \
  56       TRY (isspace);                                                          \
  57       TRY (isupper);                                                          \
  58       TRY (isxdigit);                                                         \
  59       TRY (isblank);                                                          \
  60     } while (0)
  61
  62   for (c = 0; c <= UCHAR_MAX; ++c)
  63     {
  64       print_char (c);
  65
  66       if (XOR (islower (c), ISLOWER (c)) || toupper (c) != TOUPPER (c))
  67         {
  68           fputs (" BOGUS", stdout);
  69           ++lose;
  70         }
  71
  72 #define TRY(isfoo) if (isfoo (c)) fputs (" " #isfoo, stdout)
  73       TRYEM;
  74 #undef TRY
  75
  76       fputs("; lower = ", stdout);
  77       print_char(tolower(c));
  78       fputs("; upper = ", stdout);
  79       print_char(toupper(c));
  80       putchar('\n');
  81     }
  82
  83   fputs ("EOF", stdout);
  84   if (tolower (EOF) != EOF)
  85     {
  86       ++lose;
  87       printf (" tolower BOGUS %d;", tolower (EOF));
  88     }
  89   if (toupper (EOF) != EOF)
  90     {
  91       ++lose;
  92       printf (" toupper BOGUS %d;", toupper (EOF));
  93     }
  94
  95 #define TRY(isfoo) if (isfoo (EOF)) fputs (" " #isfoo, stdout), ++lose
  96   TRYEM;
  97 #undef TRY
  98
  99   return lose ? EXIT_FAILURE : EXIT_SUCCESS;
 100 }