intl/intl-compat.c

   1 /* intl-compat.c - Stub functions to call gettext functions from GNU gettext
   2    Library.
   3    Copyright (C) 1995, 2000, 2001 Software Foundation, Inc.
   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
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include "libgnuintl.h"
  24 #include "gettextP.h"
  25
  26 /* @@ end of prolog @@ */
  27
  28 /* This file redirects the gettext functions (without prefix or suffix) to
  29    those defined in the included GNU gettext library (with "__" suffix).
  30    It is compiled into libintl when the included GNU gettext library is
  31    configured --with-included-gettext.
  32
  33    This redirection works also in the case that the system C library or
  34    the system libintl library contain gettext/textdomain/... functions.
  35    If it didn't, we would need to add preprocessor level redirections to
  36    libgnuintl.h of the following form:
  37
  38 #    define gettext gettext__
  39 #    define dgettext dgettext__
  40 #    define dcgettext dcgettext__
  41 #    define ngettext ngettext__
  42 #    define dngettext dngettext__
  43 #    define dcngettext dcngettext__
  44 #    define textdomain textdomain__
  45 #    define bindtextdomain bindtextdomain__
  46 #    define bind_textdomain_codeset bind_textdomain_codeset__
  47
  48    How does this redirection work? There are two cases.
  49    A. When libintl.a is linked into an executable, it works because
  50       functions defined in the executable always override functions in
  51       the shared libraries.
  52    B. When libintl.so is used, it works because
  53       1. those systems defining gettext/textdomain/... in the C library
  54          (namely, Solaris 2.4 and newer, and GNU libc 2.0 and newer) are
  55          ELF systems and define these symbols as weak, thus explicitly
  56          letting other shared libraries override it.
  57       2. those systems defining gettext/textdomain/... in a standalone
  58          libintl.so library (namely, Solaris 2.3 and newer) have this
  59          shared library in /usr/lib, and the linker will search /usr/lib
  60          *after* the directory where the GNU gettext library is installed.
  61
  62    A third case, namely when libintl.a is linked into a shared library
  63    whose name is not libintl.so, is not supported. In this case, on
  64    Solaris, when -lintl precedes the linker option for the shared library
  65    containing GNU gettext, the system's gettext would indeed override
  66    the GNU gettext. Anyone doing this kind of stuff must be clever enough
  67    to 1. compile libintl.a with -fPIC, 2. remove -lintl from his linker
  68    command line.  */
  69
  70
  71 #undef gettext
  72 #undef dgettext
  73 #undef dcgettext
  74 #undef ngettext
  75 #undef dngettext
  76 #undef dcngettext
  77 #undef textdomain
  78 #undef bindtextdomain
  79 #undef bind_textdomain_codeset
  80
  81
  82 char *
  83 gettext (msgid)
  84      const char *msgid;
  85 {
  86   return gettext__ (msgid);
  87 }
  88
  89
  90 char *
  91 dgettext (domainname, msgid)
  92      const char *domainname;
  93      const char *msgid;
  94 {
  95   return dgettext__ (domainname, msgid);
  96 }
  97
  98
  99 char *
 100 dcgettext (domainname, msgid, category)
 101      const char *domainname;
 102      const char *msgid;
 103      int category;
 104 {
 105   return dcgettext__ (domainname, msgid, category);
 106 }
 107
 108
 109 char *
 110 ngettext (msgid1, msgid2, n)
 111      const char *msgid1;
 112      const char *msgid2;
 113      unsigned long int n;
 114 {
 115   return ngettext__ (msgid1, msgid2, n);
 116 }
 117
 118
 119 char *
 120 dngettext (domainname, msgid1, msgid2, n)
 121      const char *domainname;
 122      const char *msgid1;
 123      const char *msgid2;
 124      unsigned long int n;
 125 {
 126   return dngettext__ (domainname, msgid1, msgid2, n);
 127 }
 128
 129
 130 char *
 131 dcngettext (domainname, msgid1, msgid2, n, category)
 132      const char *domainname;
 133      const char *msgid1;
 134      const char *msgid2;
 135      unsigned long int n;
 136      int category;
 137 {
 138   return dcngettext__ (domainname, msgid1, msgid2, n, category);
 139 }
 140
 141
 142 char *
 143 textdomain (domainname)
 144      const char *domainname;
 145 {
 146   return textdomain__ (domainname);
 147 }
 148
 149
 150 char *
 151 bindtextdomain (domainname, dirname)
 152      const char *domainname;
 153      const char *dirname;
 154 {
 155   return bindtextdomain__ (domainname, dirname);
 156 }
 157
 158
 159 char *
 160 bind_textdomain_codeset (domainname, codeset)
 161      const char *domainname;
 162      const char *codeset;
 163 {
 164   return bind_textdomain_codeset__ (domainname, codeset);
 165 }