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CATOPEN(3) FreeBSD Library Functions Manual CATOPEN(3)
NAME catopen - open message catalog
LIBRARY Standard C Library (libc, -lc)
SYNOPSIS #include <nl_types.h>
nl_catd catopen(const char *name, int oflag);
DESCRIPTION The catopen() function opens the message catalog specified by name and returns a message catalog descriptor. If name contains a `/' then name specifies the full pathname for the message catalog, otherwise the value of the environment variable NLSPATH is used with the following substitutions:
%N The value of the name argument.
%L The value of the LANG environment variable or the LC_MESSAGES category (see below).
%l The language element from the LANG environment variable or from the LC_MESSAGES category.
%t The territory element from the LANG environment variable or from the LC_MESSAGES category.
%c The codeset element from the LANG environment variable or from the LC_MESSAGES category.
%% A single % character.
An empty string is substituted for undefined values.
Path names templates defined in NLSPATH are separated by colons (`:'). A leading or two adjacent colons is equivalent to specifying %N.
If the oflag argument is set to the NL_CAT_LOCALE constant, LC_MESSAGES locale category used to open the message catalog; using NL_CAT_LOCALE conforms to the X/Open Portability Guide Issue 4 ("XPG4") standard. You can specify 0 for compatibility with X/Open Portability Guide Issue 3 ("XPG3"); when oflag is set to 0, the LANG environment variable determines the message catalog locale.
A message catalog descriptor remains valid in a process until that process closes it, or until a successful call to one of the exec(3) function.
RETURN VALUES Upon successful completion, catopen() returns a message catalog descriptor. Otherwise, (nl_catd) -1 is returned and errno is set to indicate the error.
ERRORS argument points to an empty string.
[ENOMEM] Insufficient memory is available.
SEE ALSO gencat(1), catclose(3), catgets(3), setlocale(3)
STANDARDS The catopen() function conforms to IEEE Std 1003.1-2001 ("POSIX.1").
FreeBSD 14.0-RELEASE-p6 February 12, 2005 FreeBSD 14.0-RELEASE-p6