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/*
* Nasty preload hack to allow message catalogs to be read from the build tree.
*
* export LD_PRELOAD=/usr/lib/help2man/bindtextdomain.so
* export TEXTDOMAIN=program
* export LOCALEDIR=${DESTDIR}/usr/share/locale
*
* Copyright (C) 2012 Free Software Foundation, Inc.
*
* Copying and distribution of this file, with or without modification,
* are permitted in any medium without royalty provided the copyright
* notice and this notice are preserved. This file is offered as-is,
* without any warranty.
*
* Written by Brendan O'Dea <bod@debian.org>
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>
#define PRELOAD "bindtextdomain.so"
static void die(char const *msg)
{
fprintf(stderr, PRELOAD ": %s\n", msg);
exit(1);
}
static char *e_textdomain = 0;
static char *e_localedir = 0;
static char *(*r_textdomain)(char const *) = 0;
static char *(*r_bindtextdomain)(char const *, char const *) = 0;
static char *(*r_bind_textdomain_codeset)(char const *, char const *) = 0;
void setup()
{
static int done = 0;
if (done++)
return;
if (!(e_textdomain = getenv("TEXTDOMAIN")))
die("TEXTDOMAIN not set");
if (!(e_localedir = getenv("LOCALEDIR")))
die("LOCALEDIR not set");
if (!(r_textdomain = dlsym(RTLD_NEXT, "textdomain")))
die("can't find symbol \"textdomain\"");
if (!(r_bindtextdomain = dlsym(RTLD_NEXT, "bindtextdomain")))
die("can't find symbol \"bindtextdomain\"");
if (!(r_bind_textdomain_codeset = dlsym(RTLD_NEXT,
"bind_textdomain_codeset")))
die("can't find symbol \"bind_textdomain_codeset\"");
}
char *textdomain(char const *domainname)
{
char *r;
setup();
r = r_textdomain(domainname);
if (domainname && !strcmp(domainname, e_textdomain))
r_bindtextdomain(domainname, e_localedir);
return r;
}
char *bindtextdomain(char const *domainname, char const *dirname)
{
char const *dir = dirname;
setup();
if (domainname && !strcmp(domainname, e_textdomain))
dir = e_localedir;
return r_bindtextdomain(domainname, dir);
}
char *bind_textdomain_codeset(char const *domainname, char const *codeset)
{
char *r;
setup();
r = r_bind_textdomain_codeset(domainname, codeset);
if (domainname && !strcmp(domainname, e_textdomain))
r_bindtextdomain(domainname, e_localedir);
return r;
}
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