1 .\" Copyright 1993 Mitchum DSouza <m.dsouza@mrc-applied-psychology.cambridge.ac.uk>
3 .\" Permission is granted to make and distribute verbatim copies of this
4 .\" manual provided the copyright notice and this permission notice are
5 .\" preserved on all copies.
7 .\" Permission is granted to copy and distribute modified versions of this
8 .\" manual under the conditions for verbatim copying, provided that the
9 .\" entire resulting derived work is distributed under the terms of a
10 .\" permission notice identical to this one.
12 .\" Since the Linux kernel and libraries are constantly changing, this
13 .\" manual page may be incorrect or out-of-date. The author(s) assume no
14 .\" responsibility for errors or omissions, or for damages resulting from
15 .\" the use of the information contained herein. The author(s) may not
16 .\" have taken the same level of care in the production of this manual,
17 .\" which is licensed free of charge, as they might when working
20 .\" Formatted or processed versions of this manual, if unaccompanied by
21 .\" the source, must acknowledge the copyright and authors of this work.
23 .\" Modified Thu Dec 13 22:51:19 2001 by Martin Schulze <joey@infodrom.org>
24 .\" Modified 2001-12-14 aeb
26 .TH CATOPEN 3 2001-12-14 "GNU" "Linux Programmer's Manual"
28 catopen, catclose \- open/close a message catalog
30 .B #include <nl_types.h>
32 .BI "nl_catd catopen(const char *" name ", int " flag );
34 .BI "int catclose(nl_catd " catalog );
38 opens a message catalog and returns a catalog descriptor.
39 The descriptor remains valid until
43 If a file descriptor is used to implement catalog descriptors
50 specifies the name of the message catalog to be opened.
53 specifies and absolute path (i.e., contains a \(aq/\(aq),
56 specifies a pathname for the message catalog.
57 Otherwise, the environment variable
65 It is unspecified whether
67 will be used when the process has root privileges.
70 does not exist in the environment,
71 or if a message catalog cannot be opened
72 in any of the paths specified by it,
73 then an implementation defined path is used.
74 This latter default path may depend on the
76 locale setting when the
82 environment variable when the
87 part of the locale may invalidate
88 open catalog descriptors.
94 is used to indicate the source for the language to use.
97 then it will use the current locale setting for
99 Otherwise it will use the
101 environment variable.
105 closes the message catalog identified by
107 It invalidates any subsequent references to the message catalog
113 returns a message catalog descriptor of type
116 On failure, it returns \fI(nl_catd)\ \-1\fP
119 to indicate the error.
120 The possible error values include all
121 possible values for the
127 returns 0 on success, or \-1 on failure.
131 May be the source of the
133 locale setting, and thus
134 determine the language to use if
140 The language to use if
145 .\" In XPG 1987, Vol. 3 it says:
146 .\" .I "The flag argument of catopen is reserved for future use"
147 .\" .IR "and should be set to 0" .
148 It is unclear what the source was for the constants
154 The above is the POSIX.1-2001 description.
161 The default path varies, but usually looks at a number of places below
162 .IR /usr/share/locale .
164 These functions are available for Linux since libc 4.4.4c.
165 In the case of linux libc4 and libc5, the catalog descriptor
169 area of memory and not a file descriptor.
179 The former value indicates that a set from the catalog is to be
180 loaded when needed, whereas the latter causes the initial call to
182 to load the entire catalog into memory.
183 The default search path varies, but usually looks at a number of places below
186 .IR /usr/lib/locale .