1 /* nl_langinfo() replacement: query locale dependent information.
3 Copyright (C) 2007-2015 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
26 # define WIN32_LEAN_AND_MEAN /* avoid including junk */
31 /* Return the codeset of the current locale, if this is easily deducible.
32 Otherwise, return "". */
36 static char buf[2 + 10 + 1];
38 char const *locale = setlocale (LC_CTYPE, NULL);
43 if (locale && locale[0])
45 /* If the locale name contains an encoding after the dot, return it. */
46 char *dot = strchr (locale, '.');
50 /* Look for the possible @... trailer and remove it, if any. */
51 char *codeset_start = dot + 1;
52 char const *modifier = strchr (codeset_start, '@');
55 codeset = codeset_start;
58 codesetlen = modifier - codeset_start;
59 if (codesetlen < sizeof buf)
61 codeset = memcpy (buf, codeset_start, codesetlen);
62 codeset[codesetlen] = '\0';
68 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
69 /* If setlocale is successful, it returns the number of the
70 codepage, as a string. Otherwise, fall back on Windows API
71 GetACP, which returns the locale's codepage as a number (although
72 this doesn't change according to what the 'setlocale' call specified).
73 Either way, prepend "CP" to make it a valid codeset name. */
74 codesetlen = strlen (codeset);
75 if (0 < codesetlen && codesetlen < sizeof buf - 2)
76 memmove (buf + 2, codeset, codesetlen + 1);
78 sprintf (buf + 2, "%u", GetACP ());
79 codeset = memcpy (buf, "CP", 2);
85 #if REPLACE_NL_LANGINFO
87 /* Override nl_langinfo with support for added nl_item values. */
92 rpl_nl_langinfo (nl_item item)
96 # if GNULIB_defined_CODESET
98 return ctype_codeset ();
100 # if GNULIB_defined_T_FMT_AMPM
102 return "%I:%M:%S %p";
104 # if GNULIB_defined_ERA
106 /* The format is not standardized. In glibc it is a sequence of strings
107 of the form "direction:offset:start_date:end_date:era_name:era_format"
108 with an empty string at the end. */
111 /* The %Ex conversion in strftime behaves like %x if the locale does not
112 have an alternative time format. */
116 /* The %Ec conversion in strftime behaves like %c if the locale does not
117 have an alternative time format. */
121 /* The %EX conversion in strftime behaves like %X if the locale does not
122 have an alternative time format. */
126 /* The format is not standardized. In glibc it is a sequence of 10
127 strings, appended in memory. */
128 return "\0\0\0\0\0\0\0\0\0\0";
130 # if GNULIB_defined_YESEXPR || !FUNC_NL_LANGINFO_YESEXPR_WORKS
139 return nl_langinfo (item);
144 /* Provide nl_langinfo from scratch, either for native MS-Windows, or
145 for old Unix platforms without locales, such as Linux libc5 or
151 nl_langinfo (nl_item item)
153 static char nlbuf[100];
154 struct tm tmm = { 0 };
158 /* nl_langinfo items of the LC_CTYPE category */
161 char *codeset = ctype_codeset ();
170 /* nl_langinfo items of the LC_NUMERIC category */
172 return localeconv () ->decimal_point;
174 return localeconv () ->thousands_sep;
176 return localeconv () ->grouping;
177 /* nl_langinfo items of the LC_TIME category.
178 TODO: Really use the locale. */
181 return "%a %b %e %H:%M:%S %Y";
189 return "%I:%M:%S %p";
191 if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
196 if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
207 static char const days[][sizeof "Wednesday"] = {
208 "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
211 tmm.tm_wday = item - DAY_1;
212 if (!strftime (nlbuf, sizeof nlbuf, "%A", &tmm))
213 return (char *) days[item - DAY_1];
224 static char const abdays[][sizeof "Sun"] = {
225 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
227 tmm.tm_wday = item - ABDAY_1;
228 if (!strftime (nlbuf, sizeof nlbuf, "%a", &tmm))
229 return (char *) abdays[item - ABDAY_1];
245 static char const months[][sizeof "September"] = {
246 "January", "February", "March", "April", "May", "June", "July",
247 "September", "October", "November", "December"
249 tmm.tm_mon = item - MON_1;
250 if (!strftime (nlbuf, sizeof nlbuf, "%B", &tmm))
251 return (char *) months[item - MON_1];
267 static char const abmonths[][sizeof "Jan"] = {
268 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
269 "Sep", "Oct", "Nov", "Dec"
271 tmm.tm_mon = item - ABMON_1;
272 if (!strftime (nlbuf, sizeof nlbuf, "%b", &tmm))
273 return (char *) abmonths[item - ABMON_1];
279 return "\0\0\0\0\0\0\0\0\0\0";
280 /* nl_langinfo items of the LC_MONETARY category. */
282 return localeconv () ->currency_symbol;
283 case INT_CURR_SYMBOL:
284 return localeconv () ->int_curr_symbol;
285 case MON_DECIMAL_POINT:
286 return localeconv () ->mon_decimal_point;
287 case MON_THOUSANDS_SEP:
288 return localeconv () ->mon_thousands_sep;
290 return localeconv () ->mon_grouping;
292 return localeconv () ->positive_sign;
294 return localeconv () ->negative_sign;
296 return & localeconv () ->frac_digits;
297 case INT_FRAC_DIGITS:
298 return & localeconv () ->int_frac_digits;
300 return & localeconv () ->p_cs_precedes;
302 return & localeconv () ->n_cs_precedes;
304 return & localeconv () ->p_sep_by_space;
306 return & localeconv () ->n_sep_by_space;
308 return & localeconv () ->p_sign_posn;
310 return & localeconv () ->n_sign_posn;
311 /* nl_langinfo items of the LC_MESSAGES category
312 TODO: Really use the locale. */