1 files changed, 13 insertions, 17 deletions

diff --git a/src/crepe/facade/DB.cpp b/src/crepe/facade/DB.cpp
index 80047a6..ae2d4bc 100644
--- a/src/crepe/facade/DB.cpp
+++ b/src/crepe/facade/DB.cpp
@@ -1,6 +1,5 @@
 #include <cstring>
 
-#include "Exception.h"
 #include "util/Log.h"
 
 #include "DB.h"
@@ -15,19 +14,13 @@ DB::DB(const string & path) {
 	// init database struct
 	libdb::DB * db;
 	if ((ret = libdb::db_create(&db, NULL, 0)) != 0)
-		throw Exception("db_create: {}", libdb::db_strerror(ret));
+		throw runtime_error(format("db_create: {}", libdb::db_strerror(ret)));
 	this->db = {db, [](libdb::DB * db) { db->close(db, 0); }};
 
 	// load or create database file
-	ret = this->db->open(this->db.get(), NULL, path.c_str(), NULL,
-						 libdb::DB_BTREE, DB_CREATE, 0);
-	if (ret != 0) throw Exception("db->open: {}", libdb::db_strerror(ret));
-
-	// create cursor
-	libdb::DBC * cursor;
-	ret = this->db->cursor(this->db.get(), NULL, &cursor, 0);
-	if (ret != 0) throw Exception("db->cursor: {}", libdb::db_strerror(ret));
-	this->cursor = {cursor, [](libdb::DBC * cursor) { cursor->close(cursor); }};
+	const char * file = path.empty() ? NULL : path.c_str();
+	ret = this->db->open(this->db.get(), NULL, file, NULL, libdb::DB_BTREE, DB_CREATE, 0);
+	if (ret != 0) throw runtime_error(format("db->open: {}", libdb::db_strerror(ret)));
 }
 
 libdb::DBT DB::to_thing(const string & thing) const noexcept {
@@ -43,22 +36,25 @@ string DB::get(const string & key) {
 	libdb::DBT db_val;
 	memset(&db_val, 0, sizeof(libdb::DBT));
 
-	int ret = this->cursor->get(this->cursor.get(), &db_key, &db_val, DB_FIRST);
-	if (ret != 0) throw Exception("cursor->get: {}", libdb::db_strerror(ret));
-	return {static_cast<char *>(db_val.data), db_val.size};
+	int ret = this->db->get(this->db.get(), NULL, &db_key, &db_val, 0);
+	if (ret == 0) return {static_cast<char *>(db_val.data), db_val.size};
+
+	string err = format("db->get: {}", libdb::db_strerror(ret));
+	if (ret == DB_NOTFOUND) throw out_of_range(err);
+	else throw runtime_error(err);
 }
 
 void DB::set(const string & key, const string & value) {
 	libdb::DBT db_key = this->to_thing(key);
 	libdb::DBT db_val = this->to_thing(value);
 	int ret = this->db->put(this->db.get(), NULL, &db_key, &db_val, 0);
-	if (ret != 0) throw Exception("cursor->get: {}", libdb::db_strerror(ret));
+	if (ret != 0) throw runtime_error(format("db->get: {}", libdb::db_strerror(ret)));
 }
 
-bool DB::has(const std::string & key) noexcept {
+bool DB::has(const std::string & key) {
 	try {
 		this->get(key);
-	} catch (...) {
+	} catch (std::out_of_range &) {
 		return false;
 	}
 	return true;