/* Copyright (c) 2007-2010, Dirk Krause All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above opyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the Dirk Krause nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @file dksdbdb.c Simple database API for Berkeley DB. */ #include "dk.h" #if DK_HAVE_STRING_H #include #endif #if DK_HAVE_FCNTL_H #include #endif #if DK_HAVE_IO_H #include #endif #include "dkmem.h" #include "dkstr.h" /** Inside the dksdbdb module. */ #define DKSDBI_BDB 1 #include "dksdbi.h" #include "dksdbii.h" $(trace-include) #if DK_HAVE_DB_H #include int dksdbi_bdb_close DK_P1(dk_sdbi_db *,p) { int back = 0; DB *db; $? "+ dksdbi_bdb_close" db = (DB *)(p->dbptr); if(db) { db->close(db, 0); p->dbptr = NULL; back = 1; } $? "- dksdbi_bdb_close %d", back return back; } int dksdbi_bdb_open DK_P1(dk_sdbi_db *,p) { int back = 0, ret = 0; DB *db; u_int32_t flags = 0; $? "+ dksdbi_bdb_open" flags = DB_CREATE; if((p->acc) & DK_SDBI_MODE_WRITE) { $? ". write database" if((p->acc) & DK_SDBI_MODE_TRUNCATE) { $? ". truncate database" flags |= DB_TRUNCATE; } } else { $? ". read database" flags |= DB_RDONLY; } db = NULL; if(db_create(&db, NULL, 0) == 0) { $? ". db created" ret = db->open( db, NULL, p->fn, NULL, DB_BTREE, flags, p->tfm ); if(ret == 0) { $? ". db opened" back = 1; p->dbptr = (void *)db; } else { $? "! failed to open db" db->close(db, 0); db = NULL; } } else { $? "! failed to create db" } $? "- dksdbi_bdb_open %d", back return back; } int dksdbi_bdb_store DK_P6(dk_sdbi_db *,p, void *,kp, size_t,kl, void *,vp, size_t,vl, int,insm) { int back = 0; DB *db; $? "+ dksdbi_bdb_store" db = (DB *)(p->dbptr); if(db) { DBT k, v; int ret; u_int32_t flags; DK_MEMRES(&k,sizeof(DBT)) ; DK_MEMRES(&v,sizeof(DBT)) ; flags = 0; if(insm & DK_SDBI_INSMOD_NO_REPLACE) { flags = DB_NOOVERWRITE; } else { k.data = kp; k.size = kl; db->del(db, NULL, &k, 0); DK_MEMRES(&k,sizeof(DBT)) ; } k.data = kp; k.size = kl; v.data = vp; v.size = vl; ret = db->put(db, NULL, &k, &v, flags); if(ret == 0) { back = 1; } } $? "- dksdbi_bdb_store %d", back return back; } int dksdbi_bdb_delete DK_P3(dk_sdbi_db *,p, char *,kp, size_t,kl) { int back = 0; DB *db; DBT k; int ret; $? "+ dksdbi_bdb_delete" db = (DB *)(p->dbptr); if(db) { DK_MEMRES(&k,sizeof(DBT)) ; k.data = kp; k.size = kl; ret = db->del(db, NULL, &k, 0); if(ret == 0) { back = 1; } } $? "- dksdbi_bdb_delete %d", back return back; } int dksdbi_bdb_fetch DK_P5(dk_sdbi_db *,p, void *,kp, size_t,kl, void *,vp, size_t *,vl) { int back = 0; DB *db; DBT k, v; int ret; $? "+ dksdbi_bdb_fetch" db = (DB *)(p->dbptr); if(db) { DK_MEMRES(&k,sizeof(DBT)) ; DK_MEMRES(&v,sizeof(DBT)) ; k.data = kp; k.size = kl; ret = db->get(db, NULL, &k, &v, 0); if(ret == 0) { if(v.size <= (*vl)) { DK_MEMCPY(vp,v.data,v.size) ; *vl = v.size; back = 1; } else { DK_MEMCPY(vp,v.data,(*vl)) ; back = -1; } } else { } } $? "- dksdbi_bdb_fetch %d", back return back; } int dksdbi_bdb_string_fetch DK_P4(dk_sdbi_db *,p, char *,kp, char *,vp, size_t,s) { int back = 0; DB *db; DBT k, v; int ret; $? "+ dksdbi_bdb_string_fetch" db = (DB *)(p->dbptr); if(db) { DK_MEMRES(&k,sizeof(DBT)) ; DK_MEMRES(&v,sizeof(DBT)) ; k.data = kp; k.size = (1+strlen(kp)); ret = db->get(db, NULL, &k, &v, 0); if(ret == 0) { if(v.size < s ) { DK_MEMCPY(vp,v.data,v.size) ; vp[v.size] = '\0'; back = 1; } else { DK_MEMCPY(vp,v.data,(s-1)) ; vp[s-1] = '\0'; back = -1; } } else { $? "! get failed" } } $? "- dksdbi_bdb_string_fetch %d", back return back; } int dksdbi_bdb_traverse DK_P3(dk_sdbi_db *,p, void *,d, dk_sdbi_fct_t *,f) { int back = 0; DB *db; DBT k, v; int ret; DBC *cursorp = NULL; int cc = 0; $? "+ dksdbi_bdb_traverse" db = (DB *)(p->dbptr); if(db) { DK_MEMRES(&k,sizeof(DBT)) ; DK_MEMRES(&v,sizeof(DBT)) ; ret = db->cursor(db, NULL, &cursorp, 0); if(ret == 0) { if(cursorp) { ret = cursorp->c_get(cursorp, &k, &v, DB_FIRST); if(ret == 0) { switch((*f)(d, k.data, k.size, v.data, v.size)) { case 0: case 1: { cc = 1; back = 1; } break; default: { cc = 0; } break; } while(cc) { DK_MEMRES(&k,sizeof(DBT)) ; DK_MEMRES(&v,sizeof(DBT)) ; ret = cursorp->c_get(cursorp, &k, &v, DB_NEXT); if(ret == 0) { switch((*f)(d, k.data, k.size, v.data, v.size)) { case -1: { cc = 0; } break; } } else { cc = 0; if(ret != DB_NOTFOUND) { back = 0; } } } } else { } } } else { } if(cursorp) { cursorp->c_close(cursorp); cursorp = NULL; } } $? "- dksdbi_bdb_traverse %d", back return back; } int dksdbi_bdb_sync DK_P1(dk_sdbi_db *,p) { int back = 0, ret = 0; DB *db; $? "+ dksdbi_bdb_sync" db = (DB *)(p->dbptr); if(db) { ret = db->sync(db, 0); if(ret == 0) { back = 1; } } $? "- dksdbi_bdb_sync %d", back return back; } #endif