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ton/terminal/terminal.hpp
2019-09-07 14:33:36 +04:00

101 lines
2.8 KiB
C++

/*
This file is part of TON Blockchain Library.
TON Blockchain Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
TON Blockchain Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2019 Telegram Systems LLP
*/
#pragma once
#include "terminal.h"
#include <iostream>
#include "td/utils/port/FileFd.h"
#include "td/utils/port/StdStreams.h"
#include <queue>
namespace td {
class TerminalLogInterface : public LogInterface {
public:
void append(CSlice slice, int log_level) override;
};
class TerminalIOImpl : public TerminalIO, td::ObserverBase {
public:
void refresh() {
}
void update_prompt(std::string new_prompt) override {
prompt_ = new_prompt;
refresh();
};
void update_callback(std::unique_ptr<Callback> callback) override {
callback_ = std::move(callback);
}
void deactivate_readline();
void reactivate_readline();
void output_line(std::string line) override;
void set_log_interface() override;
//void read_line();
void loop() override;
void start_up() override;
void tear_down() override;
static TerminalIOImpl *instance() {
return instance_;
}
void notify() override {
// NB: Interface will be changed
td::actor::send_closure_later(self_, &TerminalIOImpl::on_net);
}
void on_net() {
loop();
}
TerminalIOImpl(std::string prompt, bool use_readline, std::unique_ptr<Callback> callback)
: prompt_(prompt), use_readline_(use_readline), callback_(std::move(callback)) {
}
int stdin_getc();
void line_cb(std::string line);
static int s_stdin_getc(FILE *);
static void s_line(char *line);
td::Result<td::BufferSlice> process_stdin(td::ChainBufferReader *buffer);
private:
static constexpr td::uint32 buf_size = 1 << 20;
td::BufferedStdin stdin_;
std::string prompt_;
bool use_readline_ = false;
std::unique_ptr<Callback> callback_;
std::mutex out_mutex_;
char buf_[buf_size];
td::uint32 buf_start_ = 0;
td::uint32 buf_end_ = 0;
static TerminalIOImpl *instance_;
td::actor::ActorId<TerminalIOImpl> self_;
std::unique_ptr<TerminalLogInterface> log_interface_;
td::uint32 saved_point_;
std::string saved_line_;
size_t buffer_pos_ = 0;
std::queue<td::BufferSlice> cmd_queue_;
};
} // namespace td