Commit | Line | Data |
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f240aacb | 1 | # locale-zh.m4 serial 6 |
61cd9dc9 | 2 | dnl Copyright (C) 2003, 2005-2010 Free Software Foundation, Inc. |
7f8e40b7 NJ |
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]) | |
f240aacb LC |
14 | AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [ |
15 | AC_LANG_CONFTEST([AC_LANG_SOURCE([ | |
7f8e40b7 NJ |
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 (setlocale (LC_ALL, "") == NULL) return 1; | |
32 | /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". | |
33 | On MacOS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) | |
34 | is empty, and the behaviour of Tcl 8.4 in this locale is not useful. | |
35 | On OpenBSD 4.0, when an unsupported locale is specified, setlocale() | |
36 | succeeds but then nl_langinfo(CODESET) is "646". In this situation, | |
37 | some unit tests fail. */ | |
38 | #if HAVE_LANGINFO_CODESET | |
39 | { | |
40 | const char *cs = nl_langinfo (CODESET); | |
41 | if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0) | |
42 | return 1; | |
43 | } | |
44 | #endif | |
45 | #ifdef __CYGWIN__ | |
46 | /* On Cygwin, avoid locale names without encoding suffix, because the | |
47 | locale_charset() function relies on the encoding suffix. Note that | |
48 | LC_ALL is set on the command line. */ | |
49 | if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; | |
50 | #endif | |
51 | /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. | |
52 | This excludes the UTF-8 encoding. */ | |
53 | t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; | |
54 | if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; | |
55 | for (p = buf; *p != '\0'; p++) | |
56 | if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) | |
57 | return 1; | |
58 | /* Check whether a typical GB18030 multibyte sequence is recognized as a | |
59 | single wide character. This excludes the GB2312 and GBK encodings. */ | |
60 | if (mblen ("\203\062\332\066", 5) != 4) | |
61 | return 1; | |
62 | return 0; | |
63 | } | |
64 | changequote([,])dnl | |
f240aacb LC |
65 | ])]) |
66 | if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then | |
67 | # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because | |
68 | # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the | |
69 | # configure script would override the LC_ALL setting. Likewise for | |
70 | # LC_CTYPE, which is also set at the beginning of the configure script. | |
71 | # Test for the locale name without encoding suffix. | |
72 | if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then | |
73 | gt_cv_locale_zh_CN=zh_CN | |
74 | else | |
75 | # Test for the locale name with explicit encoding suffix. | |
76 | if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then | |
77 | gt_cv_locale_zh_CN=zh_CN.GB18030 | |
7f8e40b7 | 78 | else |
f240aacb LC |
79 | # None found. |
80 | gt_cv_locale_zh_CN=none | |
7f8e40b7 | 81 | fi |
7f8e40b7 | 82 | fi |
f240aacb LC |
83 | else |
84 | # If there was a link error, due to mblen(), the system is so old that | |
85 | # it certainly doesn't have a chinese locale. | |
86 | gt_cv_locale_zh_CN=none | |
7f8e40b7 | 87 | fi |
f240aacb | 88 | rm -fr conftest* |
7f8e40b7 NJ |
89 | ]) |
90 | LOCALE_ZH_CN=$gt_cv_locale_zh_CN | |
91 | AC_SUBST([LOCALE_ZH_CN]) | |
92 | ]) |