158 lines
4.1 KiB
Groff
158 lines
4.1 KiB
Groff
.\" Copyright (c) 1994 Winning Strategies, Inc.
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.\" All rights reserved.
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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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Winning Strategies, Inc.
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.Dd February 12, 2005
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.Dt CATOPEN 3
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.Os
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.Sh NAME
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.Nm catopen
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.Nd open message catalog
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In nl_types.h
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.Ft nl_catd
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.Fn catopen "const char *name" "int oflag"
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.Sh DESCRIPTION
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The
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.Fn catopen
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function opens the message catalog specified by
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.Fa name
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and returns a message catalog descriptor.
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If
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.Fa name
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contains a
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.Sq /
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then
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.Fa name
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specifies the full pathname for the message catalog, otherwise the value
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of the environment variable
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.Ev NLSPATH
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is used with
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the following substitutions:
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.Bl -tag -width XXX
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.It \&%N
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The value of the
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.Fa name
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argument.
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.It \&%L
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The value of the
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.Ev LANG
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environment variable or the
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.Dv LC_MESSAGES
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category (see below).
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.It \&%l
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The language element from the
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.Ev LANG
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environment variable or from the
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.Dv LC_MESSAGES
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category.
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.It \&%t
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The territory element from the
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.Ev LANG
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environment variable or from the
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.Dv LC_MESSAGES
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category.
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.It \&%c
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The codeset element from the
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.Ev LANG
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environment variable or from the
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.Dv LC_MESSAGES
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category.
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.It \&%%
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A single % character.
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.El
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.Pp
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An empty string is substituted for undefined values.
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.Pp
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Path names templates defined in
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.Ev NLSPATH
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are separated by colons
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.Pq Sq \&: .
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A leading or two adjacent colons
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is equivalent to specifying %N.
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.Pp
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If the
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.Fa oflag
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argument is set to the
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.Dv NL_CAT_LOCALE
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constant,
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.Dv LC_MESSAGES
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locale category used to open the message catalog; using
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.Dv NL_CAT_LOCALE
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conforms to the
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.St -xpg4
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standard.
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You can specify 0 for compatibility with
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.St -xpg3 ;
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when
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.Fa oflag
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is set to 0, the
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.Ev LANG
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environment variable
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determines the message catalog locale.
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.Pp
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A message catalog descriptor
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remains valid in a process until that process closes it, or
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until a successful call to one of the
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.Xr exec 3
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function.
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn catopen
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returns a message catalog descriptor.
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Otherwise, (nl_catd) -1 is returned and
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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.Bl -tag -width Er
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.It Bq Er EINVAL
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Argument
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.Fa name
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does not point to a valid message catalog, or catalog is corrupt.
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.It Bq Er ENAMETOOLONG
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An entire path to the message catalog exceeded 1024 characters.
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.It Bq Er ENOENT
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The named message catalog does not exists, or the
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.Fa name
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argument points to an empty string.
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.It Bq Er ENOMEM
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Insufficient memory is available.
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.El
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.Sh SEE ALSO
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.Xr gencat 1 ,
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.Xr catclose 3 ,
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.Xr catgets 3 ,
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.Xr setlocale 3
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.Sh STANDARDS
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The
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.Fn catopen
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function conforms to
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.St -p1003.1-2001 .
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