tdlight/tddb/td/db/detail/RawSqliteDb.h

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//
2021-01-01 13:57:46 +01:00
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/utils/optional.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/Status.h"
struct sqlite3;
namespace td {
namespace detail {
class RawSqliteDb {
public:
RawSqliteDb(sqlite3 *db, std::string path) : db_(db), path_(std::move(path)) {
}
RawSqliteDb(const RawSqliteDb &) = delete;
RawSqliteDb(RawSqliteDb &&) = delete;
RawSqliteDb &operator=(const RawSqliteDb &) = delete;
RawSqliteDb &operator=(RawSqliteDb &&) = delete;
~RawSqliteDb();
template <class F>
static void with_db_path(Slice main_path, F &&f) {
f(PSLICE() << main_path);
f(PSLICE() << main_path << "-journal");
f(PSLICE() << main_path << "-wal");
f(PSLICE() << main_path << "-shm");
}
static Status destroy(Slice path) TD_WARN_UNUSED_RESULT;
sqlite3 *db() {
return db_;
}
CSlice path() const {
return path_;
}
Status last_error();
static Status last_error(sqlite3 *db, CSlice path);
bool on_begin() {
begin_cnt_++;
return begin_cnt_ == 1;
}
Result<bool> on_commit() {
if (begin_cnt_ == 0) {
return Status::Error("No matching begin for commit");
}
begin_cnt_--;
return begin_cnt_ == 0;
}
void set_cipher_version(int32 cipher_version) {
cipher_version_ = cipher_version;
}
optional<int32> get_cipher_version() const {
return cipher_version_.copy();
}
private:
sqlite3 *db_;
std::string path_;
size_t begin_cnt_{0};
optional<int32> cipher_version_;
};
} // namespace detail
} // namespace td