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ef79bbde P |
1 | /* Implementation of the textdomain(3) function. |
2 | Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. | |
3 | Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2, or (at your option) | |
8 | any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software Foundation, | |
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. */ | |
18 | ||
19 | #include "intlconfig.h" | |
20 | ||
21 | #if defined STDC_HEADERS || defined _LIBC | |
22 | # include <stdlib.h> | |
23 | #endif | |
24 | ||
25 | #if defined STDC_HEADERS || defined HAVE_STRING_H || defined _LIBC | |
26 | # include <string.h> | |
27 | #else | |
28 | # include <strings.h> | |
29 | # ifndef memcpy | |
30 | # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) | |
31 | # endif | |
32 | #endif | |
33 | ||
34 | #ifdef _LIBC | |
35 | # include <libintl.h> | |
36 | #else | |
37 | # include "libgettext.h" | |
38 | #endif | |
39 | ||
40 | /* @@ end of prolog @@ */ | |
41 | ||
42 | /* Name of the default text domain. */ | |
43 | extern const char _nl_default_default_domain[]; | |
44 | ||
45 | /* Default text domain in which entries for gettext(3) are to be found. */ | |
46 | extern const char *_nl_current_default_domain; | |
47 | ||
48 | ||
49 | /* Names for the libintl functions are a problem. They must not clash | |
50 | with existing names and they should follow ANSI C. But this source | |
51 | code is also used in GNU C Library where the names have a __ | |
52 | prefix. So we have to make a difference here. */ | |
53 | #ifdef _LIBC | |
54 | # define TEXTDOMAIN __textdomain | |
55 | # ifndef strdup | |
56 | # define strdup(str) __strdup (str) | |
57 | # endif | |
58 | #else | |
59 | # define TEXTDOMAIN textdomain__ | |
60 | #endif | |
61 | ||
62 | /* Set the current default message catalog to DOMAINNAME. | |
63 | If DOMAINNAME is null, return the current default. | |
64 | If DOMAINNAME is "", reset to the default of "messages". */ | |
65 | char * | |
66 | TEXTDOMAIN (domainname) | |
67 | const char *domainname; | |
68 | { | |
69 | char *old; | |
70 | ||
71 | /* A NULL pointer requests the current setting. */ | |
72 | if (domainname == NULL) | |
73 | return (char *) _nl_current_default_domain; | |
74 | ||
75 | old = (char *) _nl_current_default_domain; | |
76 | ||
77 | /* If domain name is the null string set to default domain "messages". */ | |
78 | if (domainname[0] == '\0' | |
79 | || strcmp (domainname, _nl_default_default_domain) == 0) | |
80 | _nl_current_default_domain = _nl_default_default_domain; | |
81 | else | |
82 | { | |
83 | /* If the following malloc fails `_nl_current_default_domain' | |
84 | will be NULL. This value will be returned and so signals we | |
85 | are out of core. */ | |
86 | #if defined _LIBC || defined HAVE_STRDUP | |
87 | _nl_current_default_domain = strdup (domainname); | |
88 | #else | |
89 | size_t len = strlen (domainname) + 1; | |
90 | char *cp = (char *) malloc (len); | |
91 | if (cp != NULL) | |
92 | memcpy (cp, domainname, len); | |
93 | _nl_current_default_domain = cp; | |
94 | #endif | |
95 | } | |
96 | ||
97 | if (old != _nl_default_default_domain) | |
98 | free (old); | |
99 | ||
100 | return (char *) _nl_current_default_domain; | |
101 | } | |
102 | ||
103 | #ifdef _LIBC | |
104 | /* Alias for function name in GNU C Library. */ | |
105 | weak_alias (__textdomain, textdomain); | |
106 | #endif |