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diff --git a/man3/setlocale.3 b/man3/setlocale.3 new file mode 100644 index 0000000..d2b511e --- /dev/null +++ b/man3/setlocale.3 @@ -0,0 +1,249 @@ +'\" t +.\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de) +.\" and Copyright 1999 by Bruno Haible (haible@clisp.cons.org) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" Modified Sat Jul 24 18:20:12 1993 by Rik Faith (faith@cs.unc.edu) +.\" Modified Tue Jul 15 16:49:10 1997 by Andries Brouwer (aeb@cwi.nl) +.\" Modified Sun Jul 4 14:52:16 1999 by Bruno Haible (haible@clisp.cons.org) +.\" Modified Tue Aug 24 17:11:01 1999 by Andries Brouwer (aeb@cwi.nl) +.\" Modified Tue Feb 6 03:31:55 2001 by Andries Brouwer (aeb@cwi.nl) +.\" +.TH setlocale 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +setlocale \- set the current locale +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <locale.h> +.PP +.BI "char *setlocale(int " category ", const char *" locale ); +.fi +.SH DESCRIPTION +The +.BR setlocale () +function is used to set or query the program's current locale. +.PP +If +.I locale +is not NULL, +the program's current locale is modified according to the arguments. +The argument +.I category +determines which parts of the program's current locale should be modified. +.TS +lB lB +lB lx. +Category Governs +LC_ALL All of the locale +LC_ADDRESS T{ +Formatting of addresses and +geography-related items (*) +T} +LC_COLLATE String collation +LC_CTYPE Character classification +LC_IDENTIFICATION T{ +Metadata describing the locale (*) +T} +LC_MEASUREMENT T{ +Settings related to measurements +(metric versus US customary) (*) +T} +LC_MESSAGES T{ +Localizable natural-language messages +T} +LC_MONETARY T{ +Formatting of monetary values +T} +LC_NAME T{ +Formatting of salutations for persons (*) +T} +LC_NUMERIC T{ +Formatting of nonmonetary numeric values +T} +LC_PAPER T{ +Settings related to the standard paper size (*) +T} +LC_TELEPHONE T{ +Formats to be used with telephone services (*) +T} +LC_TIME T{ +Formatting of date and time values +T} +.TE +.PP +The categories marked with an asterisk in the above table +are GNU extensions. +For further information on these locale categories, see +.BR locale (7). +.PP +The argument +.I locale +is a pointer to a character string containing the +required setting of +.IR category . +Such a string is either a well-known constant like "C" or "da_DK" +(see below), or an opaque string that was returned by another call of +.BR setlocale (). +.PP +If +.I locale +is an empty string, +.BR """""" , +each part of the locale that should be modified is set according to the +environment variables. +The details are implementation-dependent. +For glibc, first (regardless of +.IR category ), +the environment variable +.B LC_ALL +is inspected, +next the environment variable with the same name as the category +(see the table above), +and finally the environment variable +.BR LANG . +The first existing environment variable is used. +If its value is not a valid locale specification, the locale +is unchanged, and +.BR setlocale () +returns NULL. +.PP +The locale +.B """C""" +or +.B """POSIX""" +is a portable locale; +it exists on all conforming systems. +.PP +A locale name is typically of the form +.IR language "[_" territory "][." codeset "][@" modifier "]," +where +.I language +is an ISO 639 language code, +.I territory +is an ISO 3166 country code, and +.I codeset +is a character set or encoding identifier like +.B "ISO\-8859\-1" +or +.BR "UTF\-8" . +For a list of all supported locales, try "locale \-a" (see +.BR locale (1)). +.PP +If +.I locale +is NULL, the current locale is only queried, not modified. +.PP +On startup of the main program, the portable +.B """C""" +locale is selected as default. +A program may be made portable to all locales by calling: +.PP +.in +4n +.EX +setlocale(LC_ALL, ""); +.EE +.in +.PP +after program initialization, and then: +.IP \[bu] 3 +using the values returned from a +.BR localeconv (3) +call for locale-dependent information; +.IP \[bu] +using the multibyte and wide character functions for text processing if +.BR "MB_CUR_MAX > 1" ; +.IP \[bu] +using +.BR strcoll (3) +and +.BR strxfrm (3) +to compare strings; and +.IP \[bu] +using +.BR wcscoll (3) +and +.BR wcsxfrm (3) +to compare wide-character strings. +.SH RETURN VALUE +A successful call to +.BR setlocale () +returns an opaque string that corresponds to the locale set. +This string may be allocated in static storage. +The string returned is such that a subsequent call with that string +and its associated category will restore that part of the process's +locale. +The return value is NULL if the request cannot be honored. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR setlocale () +T} Thread safety MT-Unsafe const:locale env +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SS Categories +.TP +.B LC_ALL +.TQ +.B LC_COLLATE +.TQ +.B LC_CTYPE +.TQ +.B LC_MONETARY +.TQ +.B LC_NUMERIC +.TQ +.B LC_TIME +C11, POSIX.1-2008. +.TP +.B LC_MESSAGES +POSIX.1-2008. +.TP +Others: +GNU. +.SH HISTORY +POSIX.1-2001, C89. +.SS Categories +.TP +.B LC_ALL +.TQ +.B LC_COLLATE +.TQ +.B LC_CTYPE +.TQ +.B LC_MONETARY +.TQ +.B LC_NUMERIC +.TQ +.B LC_TIME +C89, POSIX.1-2001. +.TP +.B LC_MESSAGES +POSIX.1-2001. +.TP +Others: +GNU. +.SH SEE ALSO +.BR locale (1), +.BR localedef (1), +.BR isalpha (3), +.BR localeconv (3), +.BR nl_langinfo (3), +.BR rpmatch (3), +.BR strcoll (3), +.BR strftime (3), +.BR charsets (7), +.BR locale (7) |