| 1 | # locale-zh.m4 serial 12 |
| 2 | dnl Copyright (C) 2003, 2005-2012 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 chinese locale with GB18030 encoding. |
| 10 | AC_DEFUN([gt_LOCALE_ZH_CN], |
| 11 | [ |
| 12 | AC_REQUIRE([AC_CANONICAL_HOST]) |
| 13 | AC_REQUIRE([AM_LANGINFO_CODESET]) |
| 14 | AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [ |
| 15 | AC_LANG_CONFTEST([AC_LANG_SOURCE([ |
| 16 | changequote(,)dnl |
| 17 | #include <locale.h> |
| 18 | #include <stdlib.h> |
| 19 | #include <time.h> |
| 20 | #if HAVE_LANGINFO_CODESET |
| 21 | # include <langinfo.h> |
| 22 | #endif |
| 23 | #include <stdlib.h> |
| 24 | #include <string.h> |
| 25 | struct tm t; |
| 26 | char buf[16]; |
| 27 | int main () |
| 28 | { |
| 29 | const char *p; |
| 30 | /* Check whether the given locale name is recognized by the system. */ |
| 31 | #if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__ |
| 32 | /* On native Windows, setlocale(category, "") looks at the system settings, |
| 33 | not at the environment variables. Also, when an encoding suffix such |
| 34 | as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE |
| 35 | category of the locale to "C". */ |
| 36 | if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL |
| 37 | || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) |
| 38 | return 1; |
| 39 | #else |
| 40 | if (setlocale (LC_ALL, "") == NULL) return 1; |
| 41 | #endif |
| 42 | /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". |
| 43 | On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) |
| 44 | is empty, and the behaviour of Tcl 8.4 in this locale is not useful. |
| 45 | On OpenBSD 4.0, when an unsupported locale is specified, setlocale() |
| 46 | succeeds but then nl_langinfo(CODESET) is "646". In this situation, |
| 47 | some unit tests fail. |
| 48 | On MirBSD 10, when an unsupported locale is specified, setlocale() |
| 49 | succeeds but then nl_langinfo(CODESET) is "UTF-8". */ |
| 50 | #if HAVE_LANGINFO_CODESET |
| 51 | { |
| 52 | const char *cs = nl_langinfo (CODESET); |
| 53 | if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 |
| 54 | || strcmp (cs, "UTF-8") == 0) |
| 55 | return 1; |
| 56 | } |
| 57 | #endif |
| 58 | #ifdef __CYGWIN__ |
| 59 | /* On Cygwin, avoid locale names without encoding suffix, because the |
| 60 | locale_charset() function relies on the encoding suffix. Note that |
| 61 | LC_ALL is set on the command line. */ |
| 62 | if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; |
| 63 | #endif |
| 64 | /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. |
| 65 | This excludes the UTF-8 encoding (except on MirBSD). */ |
| 66 | t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; |
| 67 | if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; |
| 68 | for (p = buf; *p != '\0'; p++) |
| 69 | if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) |
| 70 | return 1; |
| 71 | /* Check whether a typical GB18030 multibyte sequence is recognized as a |
| 72 | single wide character. This excludes the GB2312 and GBK encodings. */ |
| 73 | if (mblen ("\203\062\332\066", 5) != 4) |
| 74 | return 1; |
| 75 | return 0; |
| 76 | } |
| 77 | changequote([,])dnl |
| 78 | ])]) |
| 79 | if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then |
| 80 | case "$host_os" in |
| 81 | # Handle native Windows specially, because there setlocale() interprets |
| 82 | # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", |
| 83 | # "fr" or "fra" as "French" or "French_France.1252", |
| 84 | # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", |
| 85 | # "ja" as "Japanese" or "Japanese_Japan.932", |
| 86 | # and similar. |
| 87 | mingw*) |
| 88 | # Test for the hypothetical native Windows locale name. |
| 89 | if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then |
| 90 | gt_cv_locale_zh_CN=Chinese_China.54936 |
| 91 | else |
| 92 | # None found. |
| 93 | gt_cv_locale_zh_CN=none |
| 94 | fi |
| 95 | ;; |
| 96 | solaris2.8) |
| 97 | # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are |
| 98 | # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK. |
| 99 | # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core. |
| 100 | gt_cv_locale_zh_CN=none |
| 101 | ;; |
| 102 | *) |
| 103 | # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because |
| 104 | # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the |
| 105 | # configure script would override the LC_ALL setting. Likewise for |
| 106 | # LC_CTYPE, which is also set at the beginning of the configure script. |
| 107 | # Test for the locale name without encoding suffix. |
| 108 | if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then |
| 109 | gt_cv_locale_zh_CN=zh_CN |
| 110 | else |
| 111 | # Test for the locale name with explicit encoding suffix. |
| 112 | if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then |
| 113 | gt_cv_locale_zh_CN=zh_CN.GB18030 |
| 114 | else |
| 115 | # None found. |
| 116 | gt_cv_locale_zh_CN=none |
| 117 | fi |
| 118 | fi |
| 119 | ;; |
| 120 | esac |
| 121 | else |
| 122 | # If there was a link error, due to mblen(), the system is so old that |
| 123 | # it certainly doesn't have a chinese locale. |
| 124 | gt_cv_locale_zh_CN=none |
| 125 | fi |
| 126 | rm -fr conftest* |
| 127 | ]) |
| 128 | LOCALE_ZH_CN=$gt_cv_locale_zh_CN |
| 129 | AC_SUBST([LOCALE_ZH_CN]) |
| 130 | ]) |