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/*
Unix SMB/Netbios implementation.
Version 3.0
tdb based replacement for gettext
Copyright (C) Andrew Tridgell 2001
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
static TDB_CONTEXT *tdb;
/* load a po file into the tdb */
static BOOL load_po(const char *po_file)
{
char **lines;
int num_lines, i;
char *msgid, *msgstr;
TDB_DATA key, data;
lines = file_lines_load(po_file, &num_lines);
if (!lines) {
return False;
}
if (tdb_lockall(tdb) != 0) return False;
/* wipe the db */
tdb_traverse(tdb, (tdb_traverse_func) tdb_delete, NULL);
for (i=0;i<num_lines;i++) {
if (strncmp(lines[i], "msgid \"", 7) == 0) {
msgid = lines[i] + 7;
}
if (strncmp(lines[i], "msgstr \"", 8) == 0) {
msgstr = lines[i] + 8;
trim_string(msgid, NULL, "\"");
trim_string(msgstr, NULL, "\"");
if (*msgstr == 0) {
msgstr = msgid;
}
key.dptr = msgid;
key.dsize = strlen(msgid)+1;
data.dptr = msgstr;
data.dsize = strlen(msgstr)+1;
tdb_store(tdb, key, data, 0);
}
}
file_lines_free(lines);
tdb_unlockall(tdb);
return True;
}
/* work out what language to use from locale variables */
static char *get_lang(void)
{
char *vars[] = {"LANGUAGE", "LC_ALL", "LC_LANG", "LANG", NULL};
int i;
char *p;
for (i=0; vars[i]; i++) {
if ((p = getenv(vars[i]))) {
return p;
}
}
return NULL;
}
/* initialise the message translation subsystem */
void lang_tdb_init(void)
{
char *lang;
char *path = NULL;
struct stat st;
static int initialised;
time_t loadtime;
/* we only want to init once per process */
if (initialised) return;
initialised = 1;
lang = get_lang();
/* if no lang then we don't translate */
if (!lang) return;
asprintf(&path, "%s%s.tdb", lock_path("lang_"), lang);
tdb = tdb_open_log(path, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
if (!tdb) {
tdb = tdb_open_log(path, 0, TDB_DEFAULT, O_RDONLY, 0);
free(path);
return;
}
free(path);
asprintf(&path, "%s.po", lock_path(lang));
loadtime = tdb_fetch_int(tdb, "/LOADTIME/");
if (stat(path, &st) == 0 && (loadtime == -1 || loadtime < st.st_mtime)) {
load_po(path);
tdb_store_int(tdb, "/LOADTIME/", (int)time(NULL));
}
free(path);
}
/* translate a msgid to a message string in the current language
returns a string that must be freed by calling lang_msg_free()
*/
const char *lang_msg(const char *msgid)
{
TDB_DATA key, data;
lang_tdb_init();
if (!tdb) return msgid;
key.dptr = (char *)msgid;
key.dsize = strlen(msgid)+1;
data = tdb_fetch(tdb, key);
/* if the message isn't found then we still need to return a pointer
that can be freed. Pity. */
if (!data.dptr) return strdup(msgid);
return (const char *)data.dptr;
}
/* free up a string from lang_msg() */
void lang_msg_free(const char *msgstr)
{
if (!tdb) return;
free((void *)msgstr);
}
/*
when the _() translation macro is used there is no obvious place to free
the resulting string and there is no easy way to give a static pointer.
All we can do is rotate between some static buffers and hope a single d_printf()
doesn't have more calls to _() than the number of buffers
*/
const char *lang_msg_rotate(const char *msgid)
{
#define NUM_LANG_BUFS 4
char *msgstr;
static pstring bufs[NUM_LANG_BUFS];
static int next;
msgstr = lang_msg(msgid);
if (!msgstr) return msgid;
pstrcpy(bufs[next], msgstr);
msgstr = bufs[next];
next = (next+1) % NUM_LANG_BUFS;
return msgstr;
}
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