2 * cdb, cdb-wr - Tcl bindings for tinycdb and a journalling write extension
3 * Copyright 2006-2012 Ian Jackson
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this library; if not, see <http://www.gnu.org/licenses/>.
19 #include "chiark_tcl_cdb.h"
21 int cht_cdb_donesomelookup(Tcl_Interp *ip, void *db_v,
22 Tcl_Obj *def, Tcl_Obj **result,
23 const Byte *data, int dlen,
24 int (*storeanswer)(Tcl_Interp *ip, Tcl_Obj **result,
25 const Byte *data, int len)) {
26 if (dlen>0) return storeanswer(ip, result, data, dlen);
27 if (def) { *result= def; return TCL_OK; }
28 return cht_staticerr(ip, "cdbwr lookup key not found", "CDB NOTFOUND");
31 int cht_cdb_storeanswer_string(Tcl_Interp *ip, Tcl_Obj **result,
32 const Byte *data, int len) {
33 *result= Tcl_NewStringObj(data, len);
34 if (!*result) return cht_staticerr(ip, "Tcl_NewStringObj failed for"
35 " lookup (utf-8 encoding problem?)", "CDB BADSTRING");
39 int cht_cdb_storeanswer_hb(Tcl_Interp *ip, Tcl_Obj **result,
40 const Byte *data, int len) {
42 cht_hb_array(&val, data, len);
43 *result= cht_ret_hb(ip, val);
47 int cht_cdb_lookup_cdb(Tcl_Interp *ip, struct cdb *cdb,
48 const Byte *key, int klen,
49 const Byte **data_r, int *len_r) {
52 r= cdb_find(cdb, key, klen);
53 if (!r) { *data_r= 0; *len_r= -1; return TCL_OK; }
54 if (r<0) return cht_posixerr(ip, errno, "cdb_find failed");
56 *len_r= cdb_datalen(cdb);
58 *data_r= cdb_getdata(cdb);
59 if (!*data_r) return cht_posixerr(ip, errno, "cdb_getdata failed");
65 CHTI_COMMANDS(cht_cdbtoplevel_entries))