| # locale-zh.m4 serial 15 |
| dnl Copyright (C) 2003, 2005-2021 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
| |
| dnl From Bruno Haible. |
| |
| dnl Determine the name of a chinese locale with GB18030 encoding. |
| AC_DEFUN([gt_LOCALE_ZH_CN], |
| [ |
| AC_REQUIRE([AC_CANONICAL_HOST]) |
| AC_REQUIRE([AM_LANGINFO_CODESET]) |
| AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [ |
| AC_LANG_CONFTEST([AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <stdlib.h> |
| #include <time.h> |
| #if HAVE_LANGINFO_CODESET |
| # include <langinfo.h> |
| #endif |
| #include <stdlib.h> |
| #include <string.h> |
| struct tm t; |
| char buf[16]; |
| int main () |
| { |
| /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl |
| imitates locale dependent behaviour by looking at the environment |
| variables, and all locales use the UTF-8 encoding. */ |
| #if defined __BEOS__ || defined __HAIKU__ |
| return 1; |
| #else |
| /* Check whether the given locale name is recognized by the system. */ |
| # if defined _WIN32 && !defined __CYGWIN__ |
| /* On native Windows, setlocale(category, "") looks at the system settings, |
| not at the environment variables. Also, when an encoding suffix such |
| as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE |
| category of the locale to "C". */ |
| if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL |
| || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) |
| return 1; |
| # else |
| if (setlocale (LC_ALL, "") == NULL) return 1; |
| # endif |
| /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". |
| On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) |
| is empty, and the behaviour of Tcl 8.4 in this locale is not useful. |
| On OpenBSD 4.0, when an unsupported locale is specified, setlocale() |
| succeeds but then nl_langinfo(CODESET) is "646". In this situation, |
| some unit tests fail. |
| On MirBSD 10, when an unsupported locale is specified, setlocale() |
| succeeds but then nl_langinfo(CODESET) is "UTF-8". */ |
| # if HAVE_LANGINFO_CODESET |
| { |
| const char *cs = nl_langinfo (CODESET); |
| if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 |
| || strcmp (cs, "UTF-8") == 0) |
| return 1; |
| } |
| # endif |
| # ifdef __CYGWIN__ |
| /* On Cygwin, avoid locale names without encoding suffix, because the |
| locale_charset() function relies on the encoding suffix. Note that |
| LC_ALL is set on the command line. */ |
| if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; |
| # endif |
| /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. |
| This excludes the UTF-8 encoding (except on MirBSD). */ |
| { |
| const char *p; |
| t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; |
| if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; |
| for (p = buf; *p != '\0'; p++) |
| if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) |
| return 1; |
| } |
| /* Check whether a typical GB18030 multibyte sequence is recognized as a |
| single wide character. This excludes the GB2312 and GBK encodings. */ |
| if (mblen ("\203\062\332\066", 5) != 4) |
| return 1; |
| return 0; |
| #endif |
| } |
| ]])]) |
| if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then |
| case "$host_os" in |
| # Handle native Windows specially, because there setlocale() interprets |
| # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", |
| # "fr" or "fra" as "French" or "French_France.1252", |
| # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", |
| # "ja" as "Japanese" or "Japanese_Japan.932", |
| # and similar. |
| mingw*) |
| # Test for the hypothetical native Windows locale name. |
| if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then |
| gt_cv_locale_zh_CN=Chinese_China.54936 |
| else |
| # None found. |
| gt_cv_locale_zh_CN=none |
| fi |
| ;; |
| solaris2.8) |
| # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are |
| # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK. |
| # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core. |
| gt_cv_locale_zh_CN=none |
| ;; |
| *) |
| # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because |
| # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the |
| # configure script would override the LC_ALL setting. Likewise for |
| # LC_CTYPE, which is also set at the beginning of the configure script. |
| # Test for the locale name without encoding suffix. |
| if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then |
| gt_cv_locale_zh_CN=zh_CN |
| else |
| # Test for the locale name with explicit encoding suffix. |
| if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then |
| gt_cv_locale_zh_CN=zh_CN.GB18030 |
| else |
| # None found. |
| gt_cv_locale_zh_CN=none |
| fi |
| fi |
| ;; |
| esac |
| else |
| # If there was a link error, due to mblen(), the system is so old that |
| # it certainly doesn't have a chinese locale. |
| gt_cv_locale_zh_CN=none |
| fi |
| rm -fr conftest* |
| ]) |
| LOCALE_ZH_CN=$gt_cv_locale_zh_CN |
| AC_SUBST([LOCALE_ZH_CN]) |
| ]) |