1# locale-ja.m4 serial 12
2dnl Copyright (C) 2003, 2005-2012 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl From Bruno Haible.
8
9dnl Determine the name of a japanese locale with EUC-JP encoding.
10AC_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([
16changequote(,)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>
24struct tm t;
25char buf[16];
26int main ()
27{
28  const char *p;
29  /* Check whether the given locale name is recognized by the system.  */
30#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
31  /* On native Windows, setlocale(category, "") looks at the system settings,
32     not at the environment variables.  Also, when an encoding suffix such
33     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
34     category of the locale to "C".  */
35  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
36      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
37    return 1;
38#else
39  if (setlocale (LC_ALL, "") == NULL) return 1;
40#endif
41  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
42     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
43     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
44     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
45     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
46     some unit tests fail.
47     On MirBSD 10, when an unsupported locale is specified, setlocale()
48     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
49#if HAVE_LANGINFO_CODESET
50  {
51    const char *cs = nl_langinfo (CODESET);
52    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
53        || strcmp (cs, "UTF-8") == 0)
54      return 1;
55  }
56#endif
57#ifdef __CYGWIN__
58  /* On Cygwin, avoid locale names without encoding suffix, because the
59     locale_charset() function relies on the encoding suffix.  Note that
60     LC_ALL is set on the command line.  */
61  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
62#endif
63  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
64     on Cygwin 1.5.x.  */
65  if (MB_CUR_MAX == 1)
66    return 1;
67  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
68     This excludes the UTF-8 encoding (except on MirBSD).  */
69  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
70  if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
71  for (p = buf; *p != '\0'; p++)
72    if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
73      return 1;
74  return 0;
75}
76changequote([,])dnl
77      ])])
78    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
79      case "$host_os" in
80        # Handle native Windows specially, because there setlocale() interprets
81        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
82        # "fr" or "fra" as "French" or "French_France.1252",
83        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
84        # "ja" as "Japanese" or "Japanese_Japan.932",
85        # and similar.
86        mingw*)
87          # Note that on native Windows, the Japanese locale is
88          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
89          # cannot use it here.
90          gt_cv_locale_ja=none
91          ;;
92        *)
93          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
94          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
95          # configure script would override the LC_ALL setting. Likewise for
96          # LC_CTYPE, which is also set at the beginning of the configure script.
97          # Test for the AIX locale name.
98          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
99            gt_cv_locale_ja=ja_JP
100          else
101            # Test for the locale name with explicit encoding suffix.
102            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
103              gt_cv_locale_ja=ja_JP.EUC-JP
104            else
105              # Test for the HP-UX, OSF/1, NetBSD locale name.
106              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
107                gt_cv_locale_ja=ja_JP.eucJP
108              else
109                # Test for the IRIX, FreeBSD locale name.
110                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
111                  gt_cv_locale_ja=ja_JP.EUC
112                else
113                  # Test for the Solaris 7 locale name.
114                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
115                    gt_cv_locale_ja=ja
116                  else
117                    # Special test for NetBSD 1.6.
118                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
119                      gt_cv_locale_ja=ja_JP.eucJP
120                    else
121                      # None found.
122                      gt_cv_locale_ja=none
123                    fi
124                  fi
125                fi
126              fi
127            fi
128          fi
129          ;;
130      esac
131    fi
132    rm -fr conftest*
133  ])
134  LOCALE_JA=$gt_cv_locale_ja
135  AC_SUBST([LOCALE_JA])
136])
137