1 /* nl_langinfo() replacement: query locale dependent information.
3 Copyright (C) 2007-2016 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];
37 char const *locale = setlocale (LC_CTYPE, NULL);
42 if (locale && locale[0])
44 /* If the locale name contains an encoding after the dot, return it. */
45 char *dot = strchr (locale, '.');
49 /* Look for the possible @... trailer and remove it, if any. */
50 char *codeset_start = dot + 1;
51 char const *modifier = strchr (codeset_start, '@');
54 codeset = codeset_start;
57 codesetlen = modifier - codeset_start;
58 if (codesetlen < sizeof buf)
60 codeset = memcpy (buf, codeset_start, codesetlen);
61 codeset[codesetlen] = '\0';
67 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
68 /* If setlocale is successful, it returns the number of the
69 codepage, as a string. Otherwise, fall back on Windows API
70 GetACP, which returns the locale's codepage as a number (although
71 this doesn't change according to what the 'setlocale' call specified).
72 Either way, prepend "CP" to make it a valid codeset name. */
73 codesetlen = strlen (codeset);
74 if (0 < codesetlen && codesetlen < sizeof buf - 2)
75 memmove (buf + 2, codeset, codesetlen + 1);
77 sprintf (buf + 2, "%u", GetACP ());
78 codeset = memcpy (buf, "CP", 2);
84 #if REPLACE_NL_LANGINFO
86 /* Override nl_langinfo with support for added nl_item values. */
91 rpl_nl_langinfo (nl_item item)
95 # if GNULIB_defined_CODESET
97 return ctype_codeset ();
99 # if GNULIB_defined_T_FMT_AMPM
101 return (char *) "%I:%M:%S %p";
103 # if GNULIB_defined_ERA
105 /* The format is not standardized. In glibc it is a sequence of strings
106 of the form "direction:offset:start_date:end_date:era_name:era_format"
107 with an empty string at the end. */
110 /* The %Ex conversion in strftime behaves like %x if the locale does not
111 have an alternative time format. */
115 /* The %Ec conversion in strftime behaves like %c if the locale does not
116 have an alternative time format. */
120 /* The %EX conversion in strftime behaves like %X if the locale does not
121 have an alternative time format. */
125 /* The format is not standardized. In glibc it is a sequence of 10
126 strings, appended in memory. */
127 return (char *) "\0\0\0\0\0\0\0\0\0\0";
129 # if GNULIB_defined_YESEXPR || !FUNC_NL_LANGINFO_YESEXPR_WORKS
131 return (char *) "^[yY]";
133 return (char *) "^[nN]";
138 return nl_langinfo (item);
143 /* Provide nl_langinfo from scratch, either for native MS-Windows, or
144 for old Unix platforms without locales, such as Linux libc5 or
150 nl_langinfo (nl_item item)
152 static char nlbuf[100];
153 struct tm tmm = { 0 };
157 /* nl_langinfo items of the LC_CTYPE category */
160 char *codeset = ctype_codeset ();
165 return (char *) "UTF-8";
167 return (char *) "ISO-8859-1";
169 /* nl_langinfo items of the LC_NUMERIC category */
171 return localeconv () ->decimal_point;
173 return localeconv () ->thousands_sep;
175 return localeconv () ->grouping;
176 /* nl_langinfo items of the LC_TIME category.
177 TODO: Really use the locale. */
180 return (char *) "%a %b %e %H:%M:%S %Y";
183 return (char *) "%m/%d/%y";
186 return (char *) "%H:%M:%S";
188 return (char *) "%I:%M:%S %p";
190 if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
191 return (char *) "AM";
195 if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
196 return (char *) "PM";
206 static char const days[][sizeof "Wednesday"] = {
207 "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
210 tmm.tm_wday = item - DAY_1;
211 if (!strftime (nlbuf, sizeof nlbuf, "%A", &tmm))
212 return (char *) days[item - DAY_1];
223 static char const abdays[][sizeof "Sun"] = {
224 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
226 tmm.tm_wday = item - ABDAY_1;
227 if (!strftime (nlbuf, sizeof nlbuf, "%a", &tmm))
228 return (char *) abdays[item - ABDAY_1];
244 static char const months[][sizeof "September"] = {
245 "January", "February", "March", "April", "May", "June", "July",
246 "September", "October", "November", "December"
248 tmm.tm_mon = item - MON_1;
249 if (!strftime (nlbuf, sizeof nlbuf, "%B", &tmm))
250 return (char *) months[item - MON_1];
266 static char const abmonths[][sizeof "Jan"] = {
267 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
268 "Sep", "Oct", "Nov", "Dec"
270 tmm.tm_mon = item - ABMON_1;
271 if (!strftime (nlbuf, sizeof nlbuf, "%b", &tmm))
272 return (char *) abmonths[item - ABMON_1];
278 return (char *) "\0\0\0\0\0\0\0\0\0\0";
279 /* nl_langinfo items of the LC_MONETARY category. */
281 return localeconv () ->currency_symbol;
282 case INT_CURR_SYMBOL:
283 return localeconv () ->int_curr_symbol;
284 case MON_DECIMAL_POINT:
285 return localeconv () ->mon_decimal_point;
286 case MON_THOUSANDS_SEP:
287 return localeconv () ->mon_thousands_sep;
289 return localeconv () ->mon_grouping;
291 return localeconv () ->positive_sign;
293 return localeconv () ->negative_sign;
295 return & localeconv () ->frac_digits;
296 case INT_FRAC_DIGITS:
297 return & localeconv () ->int_frac_digits;
299 return & localeconv () ->p_cs_precedes;
301 return & localeconv () ->n_cs_precedes;
303 return & localeconv () ->p_sep_by_space;
305 return & localeconv () ->n_sep_by_space;
307 return & localeconv () ->p_sign_posn;
309 return & localeconv () ->n_sign_posn;
310 /* nl_langinfo items of the LC_MESSAGES category
311 TODO: Really use the locale. */
313 return (char *) "^[yY]";
315 return (char *) "^[nN]";