nl_types.h - Man Page

data types


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.


#include <nl_types.h>


The <nl_types.h> header shall define at least the following types:


Used by the message catalog functions catopen(), catgets(), and catclose() to identify a catalog descriptor.


Used by nl_langinfo() to identify items of langinfo data. Values of objects of type nl_item are defined in <langinfo.h>.

The <nl_types.h> header shall define at least the following symbolic constants:


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.


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




Future Directions


See Also


The System Interfaces volume of POSIX.1-2017, catclose(), catgets(), catopen(), nl_langinfo()

The Shell and Utilities volume of POSIX.1-2017, gencat

Referenced By

catclose(3p), catgets(3p), catopen(3p), gencat(1p), langinfo.h(0p), nl_langinfo(3p).

2017 IEEE/The Open Group POSIX Programmer's Manual