fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
174 lines
4.5 KiB
Groff
174 lines
4.5 KiB
Groff
.\" Copyright (c) 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Donn Seeley at BSDI.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)setlocale.3 8.1 (Berkeley) 6/9/93
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.\" $FreeBSD$
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.\"
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.Dd November 21, 2003
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.Dt SETLOCALE 3
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.Os
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.Sh NAME
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.Nm setlocale
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.Nd natural language formatting for C
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In locale.h
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.Ft char *
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.Fn setlocale "int category" "const char *locale"
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.Sh DESCRIPTION
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The
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.Fn setlocale
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function sets the C library's notion
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of natural language formatting style
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for particular sets of routines.
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Each such style is called a
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.Sq locale
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and is invoked using an appropriate name passed as a C string.
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.Pp
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The
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.Fn setlocale
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function recognizes several categories of routines.
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These are the categories and the sets of routines they select:
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.Bl -tag -width LC_MONETARY
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.It Dv LC_ALL
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Set the entire locale generically.
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.It Dv LC_COLLATE
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Set a locale for string collation routines.
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This controls alphabetic ordering in
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.Fn strcoll
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and
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.Fn strxfrm .
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.It Dv LC_CTYPE
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Set a locale for the
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.Xr ctype 3
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and
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.Xr multibyte 3
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functions.
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This controls recognition of upper and lower case,
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alphabetic or non-alphabetic characters,
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and so on.
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.It Dv LC_MESSAGES
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Set a locale for message catalogs, see
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.Xr catopen 3
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function.
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.It Dv LC_MONETARY
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Set a locale for formatting monetary values;
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this affects the
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.Fn localeconv
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function.
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.It Dv LC_NUMERIC
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Set a locale for formatting numbers.
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This controls the formatting of decimal points
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in input and output of floating point numbers
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in functions such as
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.Fn printf
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and
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.Fn scanf ,
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as well as values returned by
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.Fn localeconv .
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.It Dv LC_TIME
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Set a locale for formatting dates and times using the
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.Fn strftime
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function.
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.El
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.Pp
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Only three locales are defined by default,
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the empty string
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.Li \&"\|"
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which denotes the native environment, and the
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.Li \&"C"
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and
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.Li \&"POSIX"
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locales, which denote the C language environment.
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A
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.Fa locale
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argument of
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.Dv NULL
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causes
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.Fn setlocale
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to return the current locale.
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By default, C programs start in the
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.Li \&"C"
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locale.
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The only function in the library that sets the locale is
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.Fn setlocale ;
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the locale is never changed as a side effect of some other routine.
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn setlocale
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returns the string associated with the specified
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.Fa category
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for the requested
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.Fa locale .
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The
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.Fn setlocale
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function returns
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.Dv NULL
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and fails to change the locale
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if the given combination of
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.Fa category
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and
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.Fa locale
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makes no sense.
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.Sh FILES
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.Bl -tag -width /usr/share/locale/locale/category -compact
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.It Pa $PATH_LOCALE/ Ns Em locale/category
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.It Pa /usr/share/locale/ Ns Em locale/category
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locale file for the locale
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.Em locale
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and the category
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.Em category .
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.El
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.Sh ERRORS
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No errors are defined.
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.Sh SEE ALSO
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.Xr colldef 1 ,
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.Xr mklocale 1 ,
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.Xr catopen 3 ,
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.Xr ctype 3 ,
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.Xr localeconv 3 ,
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.Xr multibyte 3 ,
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.Xr strcoll 3 ,
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.Xr strxfrm 3 ,
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.Xr euc 5 ,
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.Xr utf8 5 ,
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.Xr environ 7
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.Sh STANDARDS
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The
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.Fn setlocale
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function conforms to
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.St -isoC-99 .
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.Sh HISTORY
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The
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.Fn setlocale
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function first appeared in
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.Bx 4.4 .
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