61 lines
2.6 KiB
C++
61 lines
2.6 KiB
C++
/*------------------------------------------------------------------------------*
|
|
* Architecture & Implementation of DBMS *
|
|
*------------------------------------------------------------------------------*
|
|
* Copyright 2022 Databases and Information Systems Group TU Dortmund *
|
|
* Visit us at *
|
|
* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
|
|
* *
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
|
|
* OTHER DEALINGS IN THE SOFTWARE. *
|
|
* *
|
|
* Authors: *
|
|
* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
|
|
* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
|
|
* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
|
|
*------------------------------------------------------------------------------*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <linenoise.h>
|
|
#include <optional>
|
|
#include <string>
|
|
|
|
namespace beedb::util
|
|
{
|
|
class CommandLineInterface
|
|
{
|
|
public:
|
|
CommandLineInterface(std::string &&history_file_name, std::string &&prompt_message)
|
|
: _history_file_name(std::move(history_file_name)), _prompt_message(std::move(prompt_message))
|
|
{
|
|
linenoiseHistoryLoad(_history_file_name.c_str());
|
|
}
|
|
|
|
std::optional<std::string> next()
|
|
{
|
|
char *line;
|
|
if ((line = linenoise(_prompt_message.c_str())) != nullptr)
|
|
{
|
|
auto line_as_string = std::string{line};
|
|
std::free(line);
|
|
|
|
linenoiseHistoryAdd(line_as_string.c_str());
|
|
linenoiseHistorySave(_history_file_name.c_str());
|
|
|
|
return std::make_optional(std::move(line_as_string));
|
|
}
|
|
|
|
return std::nullopt;
|
|
}
|
|
|
|
private:
|
|
const std::string _history_file_name;
|
|
const std::string _prompt_message;
|
|
};
|
|
} // namespace beedb::util
|