nl_types.h(0P) POSIX Programmer's Manual nl_types.h(0P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAMEnl_types.h — data types
SYNOPSIS
#include <nl_types.h>
DESCRIPTION
The <nl_types.h> header shall define at least the following types:
nl_catd Used by the message catalog functions catopen(), cat‐
gets(), and catclose() to identify a catalog descriptor.
nl_item Used by nl_langinfo() to identify items of langinfo data.
Values of objects of type nl_item are defined in <lang‐
info.h>.
The <nl_types.h> header shall define at least the following symbolic
constants:
NL_SETD Used by gencat when no $set directive is specified in a
message text source file. This constant can be passed as
the value of set_id on subsequent calls to catgets()
(that is, to retrieve messages from the default message
set). The value of NL_SETD is implementation-defined.
NL_CAT_LOCALE Value that must be passed as the oflag argument to
catopen() to ensure that message catalog selection
depends on the LC_MESSAGES locale category, rather than
directly on the LANG environment variable.
The following shall be declared as functions and may also be defined as
macros. Function prototypes shall be provided.
int catclose(nl_catd);
char *catgets(nl_catd, int, int, const char *);
nl_catd catopen(const char *, int);
The following sections are informative.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
<langinfo.h>
The System Interfaces volume of POSIX.1‐2008, catclose(), catgets(),
catopen(), nl_langinfo()
The Shell and Utilities volume of POSIX.1‐2008, gencat
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the source
files to man page format. To report such errors, see https://www.ker‐
nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 nl_types.h(0P)