gnulib/import/m4/locale-ja.m4

   1 # locale-ja.m4 serial 14
   2 dnl Copyright (C) 2003, 2005-2019 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 dnl From Bruno Haible.
   8
   9 dnl Determine the name of a japanese locale with EUC-JP encoding.
  10 AC_DEFUN([gt_LOCALE_JA],
  11 [
  12   AC_REQUIRE([AC_CANONICAL_HOST])
  13   AC_REQUIRE([AM_LANGINFO_CODESET])
  14   AC_CACHE_CHECK([for a traditional japanese locale], [gt_cv_locale_ja], [
  15     AC_LANG_CONFTEST([AC_LANG_SOURCE([
  16 changequote(,)dnl
  17 #include <locale.h>
  18 #include <time.h>
  19 #if HAVE_LANGINFO_CODESET
  20 # include <langinfo.h>
  21 #endif
  22 #include <stdlib.h>
  23 #include <string.h>
  24 struct tm t;
  25 char buf[16];
  26 int main ()
  27 {
  28   /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
  29      imitates locale dependent behaviour by looking at the environment
  30      variables, and all locales use the UTF-8 encoding.  */
  31 #if defined __BEOS__ || defined __HAIKU__
  32   return 1;
  33 #else
  34   /* Check whether the given locale name is recognized by the system.  */
  35 # if defined _WIN32 && !defined __CYGWIN__
  36   /* On native Windows, setlocale(category, "") looks at the system settings,
  37      not at the environment variables.  Also, when an encoding suffix such
  38      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
  39      category of the locale to "C".  */
  40   if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
  41       || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
  42     return 1;
  43 # else
  44   if (setlocale (LC_ALL, "") == NULL) return 1;
  45 # endif
  46   /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
  47      On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
  48      is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
  49      On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
  50      succeeds but then nl_langinfo(CODESET) is "646". In this situation,
  51      some unit tests fail.
  52      On MirBSD 10, when an unsupported locale is specified, setlocale()
  53      succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
  54 # if HAVE_LANGINFO_CODESET
  55   {
  56     const char *cs = nl_langinfo (CODESET);
  57     if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
  58         || strcmp (cs, "UTF-8") == 0)
  59       return 1;
  60   }
  61 # endif
  62 # ifdef __CYGWIN__
  63   /* On Cygwin, avoid locale names without encoding suffix, because the
  64      locale_charset() function relies on the encoding suffix.  Note that
  65      LC_ALL is set on the command line.  */
  66   if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
  67 # endif
  68   /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
  69      on Cygwin 1.5.x.  */
  70   if (MB_CUR_MAX == 1)
  71     return 1;
  72   /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
  73      This excludes the UTF-8 encoding (except on MirBSD).  */
  74   {
  75     const char *p;
  76     t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
  77     if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
  78     for (p = buf; *p != '\0'; p++)
  79       if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
  80         return 1;
  81   }
  82   return 0;
  83 #endif
  84 }
  85 changequote([,])dnl
  86       ])])
  87     if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
  88       case "$host_os" in
  89         # Handle native Windows specially, because there setlocale() interprets
  90         # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
  91         # "fr" or "fra" as "French" or "French_France.1252",
  92         # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
  93         # "ja" as "Japanese" or "Japanese_Japan.932",
  94         # and similar.
  95         mingw*)
  96           # Note that on native Windows, the Japanese locale is
  97           # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
  98           # cannot use it here.
  99           gt_cv_locale_ja=none
 100           ;;
 101         *)
 102           # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
 103           # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
 104           # configure script would override the LC_ALL setting. Likewise for
 105           # LC_CTYPE, which is also set at the beginning of the configure script.
 106           # Test for the AIX locale name.
 107           if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
 108             gt_cv_locale_ja=ja_JP
 109           else
 110             # Test for the locale name with explicit encoding suffix.
 111             if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
 112               gt_cv_locale_ja=ja_JP.EUC-JP
 113             else
 114               # Test for the HP-UX, OSF/1, NetBSD locale name.
 115               if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
 116                 gt_cv_locale_ja=ja_JP.eucJP
 117               else
 118                 # Test for the IRIX, FreeBSD locale name.
 119                 if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
 120                   gt_cv_locale_ja=ja_JP.EUC
 121                 else
 122                   # Test for the Solaris 7 locale name.
 123                   if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
 124                     gt_cv_locale_ja=ja
 125                   else
 126                     # Special test for NetBSD 1.6.
 127                     if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
 128                       gt_cv_locale_ja=ja_JP.eucJP
 129                     else
 130                       # None found.
 131                       gt_cv_locale_ja=none
 132                     fi
 133                   fi
 134                 fi
 135               fi
 136             fi
 137           fi
 138           ;;
 139       esac
 140     fi
 141     rm -fr conftest*
 142   ])
 143   LOCALE_JA=$gt_cv_locale_ja
 144   AC_SUBST([LOCALE_JA])
 145 ])