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