-/**/
+/*
+ * cdb, cdb-wr - Tcl bindings for tinycdb and a journalling write extension
+ * Copyright 2006-2012 Ian Jackson
+ *
+ * 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 library; if not, see <http://www.gnu.org/licenses/>.
+ */
#include "chiark_tcl_cdb.h"
-int cht_cdb_dosomelookup(Tcl_Interp *ip, void *db_v,
- const char *key, Tcl_Obj *def,
- Tcl_Obj **result,
- int (*somelookup)(Tcl_Interp *ip, void *db_v,
- const char *key,
- const Byte **data_r, int *len_r),
- int (*storeanswer)(Tcl_Interp *ip, Tcl_Obj **result,
- const Byte *data, int len)) {
- int r, len;
- const Byte *data;
-
- r= somelookup(ip, db_v, key, &data, &len);
- if (r) return r;
- if (len>0) return storeanswer(ip, result, data, len);
+int cht_cdb_donesomelookup(Tcl_Interp *ip, void *db_v,
+ Tcl_Obj *def, Tcl_Obj **result,
+ const Byte *data, int dlen,
+ int (*storeanswer)(Tcl_Interp *ip, Tcl_Obj **result,
+ const Byte *data, int len)) {
+ if (dlen>0) return storeanswer(ip, result, data, dlen);
if (def) { *result= def; return TCL_OK; }
return cht_staticerr(ip, "cdbwr lookup key not found", "CDB NOTFOUND");
}
*result= cht_ret_hb(ip, val);
return TCL_OK;
}
+
+int cht_cdb_lookup_cdb(Tcl_Interp *ip, struct cdb *cdb,
+ const Byte *key, int klen,
+ const Byte **data_r, int *len_r) {
+ int r;
+
+ r= cdb_find(cdb, key, klen);
+ if (!r) { *data_r= 0; *len_r= -1; return TCL_OK; }
+ if (r<0) return cht_posixerr(ip, errno, "cdb_find failed");
+ assert(r==1);
+ *len_r= cdb_datalen(cdb);
+ assert(*len_r > 0);
+ *data_r= cdb_getdata(cdb);
+ if (!*data_r) return cht_posixerr(ip, errno, "cdb_getdata failed");
+ return TCL_OK;
+}
+
+CHT_INIT(cdb,
+ CHTI_OTHER(hbytes),
+ CHTI_COMMANDS(cht_cdbtoplevel_entries))