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/* nl_langinfo() replacement: query locale dependent information.
Copyright (C) 2007-2017 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <langinfo.h>
#include <locale.h>
#include <string.h>
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
# define WIN32_LEAN_AND_MEAN /* avoid including junk */
# include <windows.h>
# include <stdio.h>
#endif
/* Return the codeset of the current locale, if this is easily deducible.
Otherwise, return "". */
static char *
ctype_codeset (void)
{
static char buf[2 + 10 + 1];
char const *locale = setlocale (LC_CTYPE, NULL);
char *codeset = buf;
size_t codesetlen;
codeset[0] = '\0';
if (locale && locale[0])
{
/* If the locale name contains an encoding after the dot, return it. */
char *dot = strchr (locale, '.');
if (dot)
{
/* Look for the possible @... trailer and remove it, if any. */
char *codeset_start = dot + 1;
char const *modifier = strchr (codeset_start, '@');
if (! modifier)
codeset = codeset_start;
else
{
codesetlen = modifier - codeset_start;
if (codesetlen < sizeof buf)
{
codeset = memcpy (buf, codeset_start, codesetlen);
codeset[codesetlen] = '\0';
}
}
}
}
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
/* If setlocale is successful, it returns the number of the
codepage, as a string. Otherwise, fall back on Windows API
GetACP, which returns the locale's codepage as a number (although
this doesn't change according to what the 'setlocale' call specified).
Either way, prepend "CP" to make it a valid codeset name. */
codesetlen = strlen (codeset);
if (0 < codesetlen && codesetlen < sizeof buf - 2)
memmove (buf + 2, codeset, codesetlen + 1);
else
sprintf (buf + 2, "%u", GetACP ());
codeset = memcpy (buf, "CP", 2);
#endif
return codeset;
}
#if REPLACE_NL_LANGINFO
/* Override nl_langinfo with support for added nl_item values. */
# undef nl_langinfo
char *
rpl_nl_langinfo (nl_item item)
{
switch (item)
{
# if GNULIB_defined_CODESET
case CODESET:
return ctype_codeset ();
# endif
# if GNULIB_defined_T_FMT_AMPM
case T_FMT_AMPM:
return (char *) "%I:%M:%S %p";
# endif
# if GNULIB_defined_ERA
case ERA:
/* The format is not standardized. In glibc it is a sequence of strings
of the form "direction:offset:start_date:end_date:era_name:era_format"
with an empty string at the end. */
return (char *) "";
case ERA_D_FMT:
/* The %Ex conversion in strftime behaves like %x if the locale does not
have an alternative time format. */
item = D_FMT;
break;
case ERA_D_T_FMT:
/* The %Ec conversion in strftime behaves like %c if the locale does not
have an alternative time format. */
item = D_T_FMT;
break;
case ERA_T_FMT:
/* The %EX conversion in strftime behaves like %X if the locale does not
have an alternative time format. */
item = T_FMT;
break;
case ALT_DIGITS:
/* The format is not standardized. In glibc it is a sequence of 10
strings, appended in memory. */
return (char *) "\0\0\0\0\0\0\0\0\0\0";
# endif
# if GNULIB_defined_YESEXPR || !FUNC_NL_LANGINFO_YESEXPR_WORKS
case YESEXPR:
return (char *) "^[yY]";
case NOEXPR:
return (char *) "^[nN]";
# endif
default:
break;
}
return nl_langinfo (item);
}
#else
/* Provide nl_langinfo from scratch, either for native MS-Windows, or
for old Unix platforms without locales, such as Linux libc5 or
BeOS. */
# include <time.h>
char *
nl_langinfo (nl_item item)
{
static char nlbuf[100];
struct tm tmm = { 0 };
switch (item)
{
/* nl_langinfo items of the LC_CTYPE category */
case CODESET:
{
char *codeset = ctype_codeset ();
if (*codeset)
return codeset;
}
# ifdef __BEOS__
return (char *) "UTF-8";
# else
return (char *) "ISO-8859-1";
# endif
/* nl_langinfo items of the LC_NUMERIC category */
case RADIXCHAR:
return localeconv () ->decimal_point;
case THOUSEP:
return localeconv () ->thousands_sep;
case GROUPING:
return localeconv () ->grouping;
/* nl_langinfo items of the LC_TIME category.
TODO: Really use the locale. */
case D_T_FMT:
case ERA_D_T_FMT:
return (char *) "%a %b %e %H:%M:%S %Y";
case D_FMT:
case ERA_D_FMT:
return (char *) "%m/%d/%y";
case T_FMT:
case ERA_T_FMT:
return (char *) "%H:%M:%S";
case T_FMT_AMPM:
return (char *) "%I:%M:%S %p";
case AM_STR:
if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
return (char *) "AM";
return nlbuf;
case PM_STR:
tmm.tm_hour = 12;
if (!strftime (nlbuf, sizeof nlbuf, "%p", &tmm))
return (char *) "PM";
return nlbuf;
case DAY_1:
case DAY_2:
case DAY_3:
case DAY_4:
case DAY_5:
case DAY_6:
case DAY_7:
{
static char const days[][sizeof "Wednesday"] = {
"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday"
};
tmm.tm_wday = item - DAY_1;
if (!strftime (nlbuf, sizeof nlbuf, "%A", &tmm))
return (char *) days[item - DAY_1];
return nlbuf;
}
case ABDAY_1:
case ABDAY_2:
case ABDAY_3:
case ABDAY_4:
case ABDAY_5:
case ABDAY_6:
case ABDAY_7:
{
static char const abdays[][sizeof "Sun"] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
tmm.tm_wday = item - ABDAY_1;
if (!strftime (nlbuf, sizeof nlbuf, "%a", &tmm))
return (char *) abdays[item - ABDAY_1];
return nlbuf;
}
case MON_1:
case MON_2:
case MON_3:
case MON_4:
case MON_5:
case MON_6:
case MON_7:
case MON_8:
case MON_9:
case MON_10:
case MON_11:
case MON_12:
{
static char const months[][sizeof "September"] = {
"January", "February", "March", "April", "May", "June", "July",
"September", "October", "November", "December"
};
tmm.tm_mon = item - MON_1;
if (!strftime (nlbuf, sizeof nlbuf, "%B", &tmm))
return (char *) months[item - MON_1];
return nlbuf;
}
case ABMON_1:
case ABMON_2:
case ABMON_3:
case ABMON_4:
case ABMON_5:
case ABMON_6:
case ABMON_7:
case ABMON_8:
case ABMON_9:
case ABMON_10:
case ABMON_11:
case ABMON_12:
{
static char const abmonths[][sizeof "Jan"] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
"Sep", "Oct", "Nov", "Dec"
};
tmm.tm_mon = item - ABMON_1;
if (!strftime (nlbuf, sizeof nlbuf, "%b", &tmm))
return (char *) abmonths[item - ABMON_1];
return nlbuf;
}
case ERA:
return (char *) "";
case ALT_DIGITS:
return (char *) "\0\0\0\0\0\0\0\0\0\0";
/* nl_langinfo items of the LC_MONETARY category. */
case CRNCYSTR:
return localeconv () ->currency_symbol;
case INT_CURR_SYMBOL:
return localeconv () ->int_curr_symbol;
case MON_DECIMAL_POINT:
return localeconv () ->mon_decimal_point;
case MON_THOUSANDS_SEP:
return localeconv () ->mon_thousands_sep;
case MON_GROUPING:
return localeconv () ->mon_grouping;
case POSITIVE_SIGN:
return localeconv () ->positive_sign;
case NEGATIVE_SIGN:
return localeconv () ->negative_sign;
case FRAC_DIGITS:
return & localeconv () ->frac_digits;
case INT_FRAC_DIGITS:
return & localeconv () ->int_frac_digits;
case P_CS_PRECEDES:
return & localeconv () ->p_cs_precedes;
case N_CS_PRECEDES:
return & localeconv () ->n_cs_precedes;
case P_SEP_BY_SPACE:
return & localeconv () ->p_sep_by_space;
case N_SEP_BY_SPACE:
return & localeconv () ->n_sep_by_space;
case P_SIGN_POSN:
return & localeconv () ->p_sign_posn;
case N_SIGN_POSN:
return & localeconv () ->n_sign_posn;
/* nl_langinfo items of the LC_MESSAGES category
TODO: Really use the locale. */
case YESEXPR:
return (char *) "^[yY]";
case NOEXPR:
return (char *) "^[nN]";
default:
return (char *) "";
}
}
#endif
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