Section: POSIX Programmer's Manual (0P)
Updated: 2003
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NAME

nl_types.h - data types  

SYNOPSIS

#include <nl_types.h>  

DESCRIPTION

The <nl_types.h> header shall contain definitions of at least the following types:

nl_catd
Used by the message catalog functions catopen(), catgets(), 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 <langinfo.h> .

The <nl_types.h> header shall contain definitions of at least the following constants:

NL_SETD
Used by gencat when no $set directive is specified in a message text source file; see the Internationalization Guide. 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 IEEE Std 1003.1-2001, catclose(), catgets(), catopen(), nl_langinfo(), the Shell and Utilities volume of IEEE Std 1003.1-2001, gencat  

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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.opengroup.org/unix/online.html .