138 lines
5.4 KiB
Plaintext
138 lines
5.4 KiB
Plaintext
# locale-zh.m4 serial 15
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dnl Copyright (C) 2003, 2005-2023 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Bruno Haible.
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dnl Determine the name of a chinese locale with GB18030 encoding.
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AC_DEFUN([gt_LOCALE_ZH_CN],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_REQUIRE([AM_LANGINFO_CODESET])
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AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [
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AC_LANG_CONFTEST([AC_LANG_SOURCE([[
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#include <locale.h>
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#include <stdlib.h>
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#include <time.h>
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#if HAVE_LANGINFO_CODESET
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# include <langinfo.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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struct tm t;
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char buf[16];
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int main ()
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{
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/* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl
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imitates locale dependent behaviour by looking at the environment
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variables, and all locales use the UTF-8 encoding. */
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#if defined __BEOS__ || defined __HAIKU__
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return 1;
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#else
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/* Check whether the given locale name is recognized by the system. */
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# if defined _WIN32 && !defined __CYGWIN__
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/* On native Windows, setlocale(category, "") looks at the system settings,
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not at the environment variables. Also, when an encoding suffix such
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as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
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category of the locale to "C". */
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if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
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|| strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
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return 1;
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# else
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if (setlocale (LC_ALL, "") == NULL) return 1;
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# endif
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/* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
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On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
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is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
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On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
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succeeds but then nl_langinfo(CODESET) is "646". In this situation,
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some unit tests fail.
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On MirBSD 10, when an unsupported locale is specified, setlocale()
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succeeds but then nl_langinfo(CODESET) is "UTF-8". */
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# if HAVE_LANGINFO_CODESET
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{
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const char *cs = nl_langinfo (CODESET);
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if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
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|| strcmp (cs, "UTF-8") == 0)
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return 1;
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}
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# endif
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# ifdef __CYGWIN__
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/* On Cygwin, avoid locale names without encoding suffix, because the
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locale_charset() function relies on the encoding suffix. Note that
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LC_ALL is set on the command line. */
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if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
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# endif
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/* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
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This excludes the UTF-8 encoding (except on MirBSD). */
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{
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const char *p;
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t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
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if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
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for (p = buf; *p != '\0'; p++)
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if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
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return 1;
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}
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/* Check whether a typical GB18030 multibyte sequence is recognized as a
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single wide character. This excludes the GB2312 and GBK encodings. */
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if (mblen ("\203\062\332\066", 5) != 4)
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return 1;
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return 0;
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#endif
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}
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]])])
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if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
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case "$host_os" in
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# Handle native Windows specially, because there setlocale() interprets
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# "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
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# "fr" or "fra" as "French" or "French_France.1252",
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# "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
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# "ja" as "Japanese" or "Japanese_Japan.932",
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# and similar.
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mingw*)
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# Test for the hypothetical native Windows locale name.
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if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=Chinese_China.54936
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else
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# None found.
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gt_cv_locale_zh_CN=none
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fi
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;;
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solaris2.8)
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# On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
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# broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
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# Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
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gt_cv_locale_zh_CN=none
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;;
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*)
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# Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
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# otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
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# configure script would override the LC_ALL setting. Likewise for
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# LC_CTYPE, which is also set at the beginning of the configure script.
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# Test for the locale name without encoding suffix.
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if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=zh_CN
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else
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# Test for the locale name with explicit encoding suffix.
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if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=zh_CN.GB18030
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else
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# None found.
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gt_cv_locale_zh_CN=none
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fi
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fi
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;;
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esac
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else
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# If there was a link error, due to mblen(), the system is so old that
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# it certainly doesn't have a chinese locale.
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gt_cv_locale_zh_CN=none
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fi
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rm -fr conftest*
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])
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LOCALE_ZH_CN=$gt_cv_locale_zh_CN
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AC_SUBST([LOCALE_ZH_CN])
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])
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