initial commit

terminal/terminal.h

@@ -0,0 +1,88 @@
+/*
+    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 "td/actor/actor.h"
+#include "td/utils/buffer.h"
+
+#include <functional>
+#include <ostream>
+
+namespace td {
+
+class TerminalIOOutputter {
+ public:
+  static const size_t BUFFER_SIZE = 128 * 1024;
+  TerminalIOOutputter()
+      : buffer_(new char[BUFFER_SIZE]), sb_(std::make_unique<StringBuilder>(td::MutableSlice{buffer_, BUFFER_SIZE})) {
+  }
+  TerminalIOOutputter(TerminalIOOutputter &&X) = default;
+
+  template <class T>
+  TerminalIOOutputter &operator<<(const T &other) {
+    *sb_ << other;
+    return *this;
+  }
+  TerminalIOOutputter &operator<<(std::ostream &(*pManip)(std::ostream &)) {
+    *sb_ << '\n';
+    return *this;
+  }
+
+  auto &sb() {
+    return *sb_;
+  }
+
+  MutableCSlice as_cslice() {
+    return sb_->as_cslice();
+  }
+  bool is_error() const {
+    return sb_->is_error();
+  }
+  ~TerminalIOOutputter();
+
+ private:
+  char *buffer_;
+  std::unique_ptr<StringBuilder> sb_;
+};
+
+class TerminalIO : public actor::Actor {
+ public:
+  class Callback {
+   public:
+    virtual ~Callback() = default;
+    virtual void line_cb(td::BufferSlice line) = 0;
+    //virtual std::vector<std::string> autocomplete_cb(std::string line) = 0;
+  };
+
+  virtual ~TerminalIO() = default;
+  virtual void update_prompt(std::string new_prompt) = 0;
+  virtual void update_callback(std::unique_ptr<Callback> callback) = 0;
+  static void output(std::string line);
+  static void output(td::Slice slice);
+  static TerminalIOOutputter out() {
+    return TerminalIOOutputter{};
+  }
+  virtual void output_line(std::string line) = 0;
+  virtual void set_log_interface() = 0;
+
+  static td::actor::ActorOwn<TerminalIO> create(std::string prompt, bool use_readline,
+                                                std::unique_ptr<Callback> callback);
+};
+
+}  // namespace td