tests/locale.c

   1 /* Program that prints the names of the categories of the current locale.
   2    Copyright (C) 2019-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
  18
  19 #include <config.h>
  20
  21 #include <locale.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 /* We want to use the system's setlocale() function here, not the gnulib
  26    override.  */
  27 #undef setlocale
  28
  29 /* Specification:
  30    <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/locale.html>
  31    Here we implement only the invocation without any command-line options.  */
  32
  33 static const char *
  34 defaulted_getenv (const char *variable)
  35 {
  36   const char *value = getenv (variable);
  37   return (value != NULL ? value : "");
  38 }
  39
  40 static void
  41 print_category (int category, const char *variable)
  42 {
  43   const char *value = defaulted_getenv (variable);
  44   if (value[0] != '\0' && defaulted_getenv ("LC_ALL")[0] == '\0')
  45     /* The variable is set in the environment and not overridden by LC_ALL.  */
  46     printf ("%s=%s\n", variable, value);
  47   else
  48     printf ("%s=\"%s\"\n", variable, setlocale (category, NULL));
  49 }
  50
  51 int
  52 main ()
  53 {
  54   setlocale (LC_ALL, "");
  55
  56   printf ("LANG=%s\n", defaulted_getenv ("LANG"));
  57   print_category (LC_CTYPE, "LC_CTYPE");
  58   print_category (LC_NUMERIC, "LC_NUMERIC");
  59   print_category (LC_TIME, "LC_TIME");
  60   print_category (LC_COLLATE, "LC_COLLATE");
  61   print_category (LC_MONETARY, "LC_MONETARY");
  62   print_category (LC_MESSAGES, "LC_MESSAGES");
  63 #ifdef LC_PAPER
  64   print_category (LC_PAPER, "LC_PAPER");
  65 #endif
  66 #ifdef LC_NAME
  67   print_category (LC_NAME, "LC_NAME");
  68 #endif
  69 #ifdef LC_ADDRESS
  70   print_category (LC_ADDRESS, "LC_ADDRESS");
  71 #endif
  72 #ifdef LC_TELEPHONE
  73   print_category (LC_TELEPHONE, "LC_TELEPHONE");
  74 #endif
  75 #ifdef LC_MEASUREMENT
  76   print_category (LC_MEASUREMENT, "LC_MEASUREMENT");
  77 #endif
  78 #ifdef LC_IDENTIFICATION
  79   print_category (LC_IDENTIFICATION, "LC_IDENTIFICATION");
  80 #endif
  81
  82   printf ("LC_ALL=%s\n", defaulted_getenv ("LC_ALL"));
  83
  84   return 0;
  85 }