catopen, catclose — open/close a message catalog
#include <nl_types.h>
nl_catd
catopen( |
const char *name, |
int flag); |
int
catclose( |
nl_catd catalog); |
The function catopen() opens
a message catalog and returns a catalog descriptor. The
descriptor remains valid until catclose() or execve(2). If a file
descriptor is used to implement catalog descriptors, then the
FD_CLOEXEC flag will be
set.
The argument name
specifies the name of the message catalog to be opened. If
name specifies an
absolute path (i.e., contains a '/'), then name specifies a pathname for
the message catalog. Otherwise, the environment variable
NLSPATH is used with name substituted for %N (see locale(7)). It is
unspecified whether NLSPATH
will be used when the process has root privileges. If
NLSPATH does not exist in the
environment, or if a message catalog cannot be opened in any
of the paths specified by it, then an implementation defined
path is used. This latter default path may depend on the
LC_MESSAGES locale setting when
the flag argument is
NL_CAT_LOCALE and on the
LANG environment variable when
the flag argument is
0. Changing the LC_MESSAGES
part of the locale may invalidate open catalog
descriptors.
The flag argument
to catopen() is used to
indicate the source for the language to use. If it is set to
NL_CAT_LOCALE, then it will use
the current locale setting for LC_MESSAGES. Otherwise, it will use the
LANG environment variable.
The function catclose()
closes the message catalog identified by catalog. It invalidates any
subsequent references to the message catalog defined by
catalog.
The function catopen()
returns a message catalog descriptor of type nl_catd on success. On failure, it returns
(nl_catd) −1 and
sets errno to indicate the
error. The possible error values include all possible values
for the open(2) call.
The function catclose()
returns 0 on success, or −1 on failure.
LC_MESSAGESMay be the source of the LC_MESSAGES locale setting, and thus
determine the language to use if flag is set to
NL_CAT_LOCALE.
LANGThe language to use if flag is 0.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
catopen() |
Thread safety | MT-Safe env |
catclose() |
Thread safety | MT-Safe |
The above is the POSIX.1 description. The glibc value for
NL_CAT_LOCALE is 1. The default
path varies, but usually looks at a number of places below
/usr/share/locale.
This page is part of release 4.07 of the Linux man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
|
Copyright 1993 Mitchum DSouza <m.dsouzamrc-applied-psychology.cambridge.ac.uk> %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END Modified Thu Dec 13 22:51:19 2001 by Martin Schulze <joeyinfodrom.org> Modified 2001-12-14 aeb |