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/*
Unix SMB/CIFS implementation.
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "system/filesys.h"
#include "intl/lang_tdb.h"
static TDB_CONTEXT *tdb;
/* the currently selected language */
static char *current_lang;
/* load a msg file into the tdb */
static bool load_msg(const char *msg_file)
{
char **lines;
int num_lines, i;
char *msgid, *msgstr;
TDB_DATA data;
lines = file_lines_load(msg_file, &num_lines, 0, NULL);
if (!lines) {
return False;
}
if (tdb_lockall(tdb) != 0) {
TALLOC_FREE(lines);
return False;
}
/* wipe the db */
tdb_wipe_all(tdb);
msgid = NULL;
for (i=0;i<num_lines;i++) {
if (strncmp(lines[i], "msgid \"", 7) == 0) {
msgid = lines[i] + 7;
}
if (msgid && strncmp(lines[i], "msgstr \"", 8) == 0) {
msgstr = lines[i] + 8;
trim_char(msgid, '\0', '\"');
trim_char(msgstr, '\0', '\"');
if (*msgstr == 0) {
msgstr = msgid;
}
all_string_sub(msgid, "\\n", "\n", 0);
all_string_sub(msgstr, "\\n", "\n", 0);
data = string_term_tdb_data(msgstr);
tdb_store_bystring(tdb, msgid, data, 0);
msgid = NULL;
}
}
TALLOC_FREE(lines);
tdb_unlockall(tdb);
return True;
}
/* work out what language to use from locale variables */
static const char *get_lang(void)
{
const 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. If the "lang" argument
is NULL then get the language from the normal environment variables */
bool lang_tdb_init(const char *lang)
{
char *path = NULL;
char *msg_path = NULL;
struct stat st;
static int initialised;
time_t loadtime;
bool result = False;
/* we only want to init once per process, unless given
an override */
if (initialised && !lang)
return True;
if (initialised) {
/* we are re-initialising, free up any old init */
if (tdb) {
tdb_close(tdb);
tdb = NULL;
}
SAFE_FREE(current_lang);
}
initialised = 1;
if (!lang) {
/* no lang given, use environment */
lang = get_lang();
}
/* if no lang then we don't translate */
if (!lang)
return True;
if (asprintf(&msg_path, "%s.msg",
data_path((const char *)lang)) == -1) {
DEBUG(0, ("asprintf failed\n"));
goto done;
}
if (stat(msg_path, &st) != 0) {
/* the msg file isn't available */
DEBUG(10, ("lang_tdb_init: %s: %s\n", msg_path,
strerror(errno)));
goto done;
}
if (asprintf(&path, "%s%s.tdb", lock_path("lang_"), lang) == -1) {
DEBUG(0, ("asprintf failed\n"));
goto done;
}
DEBUG(10, ("lang_tdb_init: loading %s\n", path));
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);
if (!tdb) {
DEBUG(10, ("lang_tdb_init: %s: %s\n", path,
strerror(errno)));
goto done;
}
current_lang = SMB_STRDUP(lang);
result = True;
goto done;
}
loadtime = tdb_fetch_int32(tdb, "/LOADTIME/");
if (loadtime == -1 || loadtime < st.st_mtime) {
load_msg(msg_path);
tdb_store_int32(tdb, "/LOADTIME/", (int)time(NULL));
}
current_lang = SMB_STRDUP(lang);
result = True;
done:
SAFE_FREE(msg_path);
SAFE_FREE(path);
return result;
}
/* 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 data;
const char *p;
char *q, *msgid_quoted;
int count;
lang_tdb_init(NULL);
if (!tdb) return msgid;
/* Due to the way quotes in msgids are escaped in the msg file we
must replace " with \" before doing a lookup in the tdb. */
count = 0;
for(p = msgid; *p; p++) {
if (*p == '\"')
count++;
}
if (!(msgid_quoted = (char *)SMB_MALLOC(strlen(msgid) + count + 1)))
return msgid;
/* string_sub() is unsuitable here as it replaces some punctuation
chars with underscores. */
for(p = msgid, q = msgid_quoted; *p; p++) {
if (*p == '\"') {
*q = '\\';
q++;
}
*q = *p;
q++;
}
*q = 0;
data = tdb_fetch_bystring(tdb, msgid_quoted);
free(msgid_quoted);
/* if the message isn't found then we still need to return a pointer
that can be freed. Pity. */
if (!data.dptr)
return SMB_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(discard_const_p(void, msgstr));
}
/*
return the current language - needed for language file mappings
*/
char *lang_tdb_current(void)
{
return current_lang;
}
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