1/* $NetBSD: textdomain.c,v 1.1.1.1 2016/01/14 00:11:28 christos Exp $ */ 2 3/* Implementation of the textdomain(3) function. 4 Copyright (C) 1995-1998, 2000-2003 Free Software Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms of the GNU Library General Public License as published 8 by the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Library General Public License for more details. 15 16 You should have received a copy of the GNU Library General Public 17 License along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 19 USA. */ 20 21#ifdef HAVE_CONFIG_H 22# include <config.h> 23#endif 24 25#include <stdlib.h> 26#include <string.h> 27 28#ifdef _LIBC 29# include <libintl.h> 30#else 31# include "libgnuintl.h" 32#endif 33#include "gettextP.h" 34 35#ifdef _LIBC 36/* We have to handle multi-threaded applications. */ 37# include <bits/libc-lock.h> 38#else 39/* Provide dummy implementation if this is outside glibc. */ 40# define __libc_rwlock_define(CLASS, NAME) 41# define __libc_rwlock_wrlock(NAME) 42# define __libc_rwlock_unlock(NAME) 43#endif 44 45/* The internal variables in the standalone libintl.a must have different 46 names than the internal variables in GNU libc, otherwise programs 47 using libintl.a cannot be linked statically. */ 48#if !defined _LIBC 49# define _nl_default_default_domain libintl_nl_default_default_domain 50# define _nl_current_default_domain libintl_nl_current_default_domain 51#endif 52 53/* @@ end of prolog @@ */ 54 55/* Name of the default text domain. */ 56extern const char _nl_default_default_domain[] attribute_hidden; 57 58/* Default text domain in which entries for gettext(3) are to be found. */ 59extern const char *_nl_current_default_domain attribute_hidden; 60 61 62/* Names for the libintl functions are a problem. They must not clash 63 with existing names and they should follow ANSI C. But this source 64 code is also used in GNU C Library where the names have a __ 65 prefix. So we have to make a difference here. */ 66#ifdef _LIBC 67# define TEXTDOMAIN __textdomain 68# ifndef strdup 69# define strdup(str) __strdup (str) 70# endif 71#else 72# define TEXTDOMAIN libintl_textdomain 73#endif 74 75/* Lock variable to protect the global data in the gettext implementation. */ 76__libc_rwlock_define (extern, _nl_state_lock attribute_hidden) 77 78/* Set the current default message catalog to DOMAINNAME. 79 If DOMAINNAME is null, return the current default. 80 If DOMAINNAME is "", reset to the default of "messages". */ 81char * 82TEXTDOMAIN (const char *domainname) 83{ 84 char *new_domain; 85 char *old_domain; 86 87 /* A NULL pointer requests the current setting. */ 88 if (domainname == NULL) 89 return (char *) _nl_current_default_domain; 90 91 __libc_rwlock_wrlock (_nl_state_lock); 92 93 old_domain = (char *) _nl_current_default_domain; 94 95 /* If domain name is the null string set to default domain "messages". */ 96 if (domainname[0] == '\0' 97 || strcmp (domainname, _nl_default_default_domain) == 0) 98 { 99 _nl_current_default_domain = _nl_default_default_domain; 100 new_domain = (char *) _nl_current_default_domain; 101 } 102 else if (strcmp (domainname, old_domain) == 0) 103 /* This can happen and people will use it to signal that some 104 environment variable changed. */ 105 new_domain = old_domain; 106 else 107 { 108 /* If the following malloc fails `_nl_current_default_domain' 109 will be NULL. This value will be returned and so signals we 110 are out of core. */ 111#if defined _LIBC || defined HAVE_STRDUP 112 new_domain = strdup (domainname); 113#else 114 size_t len = strlen (domainname) + 1; 115 new_domain = (char *) malloc (len); 116 if (new_domain != NULL) 117 memcpy (new_domain, domainname, len); 118#endif 119 120 if (new_domain != NULL) 121 _nl_current_default_domain = new_domain; 122 } 123 124 /* We use this possibility to signal a change of the loaded catalogs 125 since this is most likely the case and there is no other easy we 126 to do it. Do it only when the call was successful. */ 127 if (new_domain != NULL) 128 { 129 ++_nl_msg_cat_cntr; 130 131 if (old_domain != new_domain && old_domain != _nl_default_default_domain) 132 free (old_domain); 133 } 134 135 __libc_rwlock_unlock (_nl_state_lock); 136 137 return new_domain; 138} 139 140#ifdef _LIBC 141/* Alias for function name in GNU C Library. */ 142weak_alias (__textdomain, textdomain); 143#endif 144