1 /* nl_langinfo() replacement: query locale dependent information.
3 Copyright (C) 2007-2018 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 <https://www.gnu.org/licenses/>. */
25 #if defined _WIN32 && ! defined __CYGWIN__
26 # define WIN32_LEAN_AND_MEAN /* avoid including junk */
31 #if !REPLACE_NL_LANGINFO || GNULIB_defined_CODESET
32 /* Return the codeset of the current locale, if this is easily deducible.
33 Otherwise, return "". */
37 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 __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);
86 #if REPLACE_NL_LANGINFO
88 /* Override nl_langinfo with support for added nl_item values. */
93 rpl_nl_langinfo (nl_item item)
97 # if GNULIB_defined_CODESET
99 return ctype_codeset ();
101 # if GNULIB_defined_T_FMT_AMPM
103 return (char *) "%I:%M:%S %p";
105 # if GNULIB_defined_ALTMON
118 /* We don't ship the appropriate localizations with gnulib. Therefore,
119 treat ALTMON_i like MON_i. */
120 item = item - ALTMON_1 + MON_1;
123 # if GNULIB_defined_ERA
125 /* The format is not standardized. In glibc it is a sequence of strings
126 of the form "direction:offset:start_date:end_date:era_name:era_format"
127 with an empty string at the end. */
130 /* The %Ex conversion in strftime behaves like %x if the locale does not
131 have an alternative time format. */
135 /* The %Ec conversion in strftime behaves like %c if the locale does not
136 have an alternative time format. */
140 /* The %EX conversion in strftime behaves like %X if the locale does not
141 have an alternative time format. */
145 /* The format is not standardized. In glibc it is a sequence of 10
146 strings, appended in memory. */
147 return (char *) "\0\0\0\0\0\0\0\0\0\0";
149 # if GNULIB_defined_YESEXPR || !FUNC_NL_LANGINFO_YESEXPR_WORKS
151 return (char *) "^[yY]";
153 return (char *) "^[nN]";
158 return nl_langinfo (item);
163 /* Provide nl_langinfo from scratch, either for native MS-Windows, or
164 for old Unix platforms without locales, such as Linux libc5 or
170 nl_langinfo (nl_item item)
172 static char nlbuf[100];
173 struct tm tmm = { 0 };
177 /* nl_langinfo items of the LC_CTYPE category */
180 char *codeset = ctype_codeset ();
185 return (char *) "UTF-8";
187 return (char *) "ISO-8859-1";
189 /* nl_langinfo items of the LC_NUMERIC category */
191 return localeconv () ->decimal_point;
193 return localeconv () ->thousands_sep;
196 return localeconv () ->grouping;
198 /* nl_langinfo items of the LC_TIME category.
199 TODO: Really use the locale. */
202 return (char *) "%a %b %e %H:%M:%S %Y";
205 return (char *) "%m/%d/%y";
208 return (char *) "%H:%M:%S";
210 return (char *) "%I:%M:%S %p";
212 if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
213 return (char *) "AM";
217 if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
218 return (char *) "PM";
228 static char const days[][sizeof "Wednesday"] = {
229 "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
232 tmm.tm_wday = item - DAY_1;
233 if (!strftime (nlbuf, sizeof nlbuf, "%A", &tmm))
234 return (char *) days[item - DAY_1];
245 static char const abdays[][sizeof "Sun"] = {
246 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
248 tmm.tm_wday = item - ABDAY_1;
249 if (!strftime (nlbuf, sizeof nlbuf, "%a", &tmm))
250 return (char *) abdays[item - ABDAY_1];
254 static char const months[][sizeof "September"] = {
255 "January", "February", "March", "April", "May", "June", "July",
256 "September", "October", "November", "December"
270 tmm.tm_mon = item - MON_1;
271 if (!strftime (nlbuf, sizeof nlbuf, "%B", &tmm))
272 return (char *) months[item - MON_1];
286 tmm.tm_mon = item - ALTMON_1;
287 /* The platforms without nl_langinfo() don't support strftime with %OB.
288 We don't even need to try. */
290 if (!strftime (nlbuf, sizeof nlbuf, "%OB", &tmm))
292 if (!strftime (nlbuf, sizeof nlbuf, "%B", &tmm))
293 return (char *) months[item - ALTMON_1];
309 static char const abmonths[][sizeof "Jan"] = {
310 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
311 "Sep", "Oct", "Nov", "Dec"
313 tmm.tm_mon = item - ABMON_1;
314 if (!strftime (nlbuf, sizeof nlbuf, "%b", &tmm))
315 return (char *) abmonths[item - ABMON_1];
321 return (char *) "\0\0\0\0\0\0\0\0\0\0";
322 /* nl_langinfo items of the LC_MONETARY category. */
324 return localeconv () ->currency_symbol;
325 # ifdef INT_CURR_SYMBOL
326 case INT_CURR_SYMBOL:
327 return localeconv () ->int_curr_symbol;
328 case MON_DECIMAL_POINT:
329 return localeconv () ->mon_decimal_point;
330 case MON_THOUSANDS_SEP:
331 return localeconv () ->mon_thousands_sep;
333 return localeconv () ->mon_grouping;
335 return localeconv () ->positive_sign;
337 return localeconv () ->negative_sign;
339 return & localeconv () ->frac_digits;
340 case INT_FRAC_DIGITS:
341 return & localeconv () ->int_frac_digits;
343 return & localeconv () ->p_cs_precedes;
345 return & localeconv () ->n_cs_precedes;
347 return & localeconv () ->p_sep_by_space;
349 return & localeconv () ->n_sep_by_space;
351 return & localeconv () ->p_sign_posn;
353 return & localeconv () ->n_sign_posn;
355 /* nl_langinfo items of the LC_MESSAGES category
356 TODO: Really use the locale. */
358 return (char *) "^[yY]";
360 return (char *) "^[nN]";