.. _program_listing_file__tmp_ws_src_keyboard_handler_keyboard_handler_include_keyboard_handler_keyboard_handler_unix_impl.hpp:

Program Listing for File keyboard_handler_unix_impl.hpp
=======================================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_keyboard_handler_keyboard_handler_include_keyboard_handler_keyboard_handler_unix_impl.hpp>` (``/tmp/ws/src/keyboard_handler/keyboard_handler/include/keyboard_handler/keyboard_handler_unix_impl.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   // Copyright 2021 Apex.AI, Inc. or its affiliates. All Rights Reserved.
   //
   // Licensed under the Apache License, Version 2.0 (the "License");
   // you may not use this file except in compliance with the License.
   // You may obtain a copy of the License at
   //
   //     http://www.apache.org/licenses/LICENSE-2.0
   //
   // Unless required by applicable law or agreed to in writing, software
   // distributed under the License is distributed on an "AS IS" BASIS,
   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   // See the License for the specific language governing permissions and
   // limitations under the License.
   
   #ifndef KEYBOARD_HANDLER__KEYBOARD_HANDLER_UNIX_IMPL_HPP_
   #define KEYBOARD_HANDLER__KEYBOARD_HANDLER_UNIX_IMPL_HPP_
   
   #ifndef _WIN32
   #include <termios.h>
   #include <string>
   #include <unordered_map>
   #include <atomic>
   #include <thread>
   #include <tuple>
   #include <stdexcept>
   #include "keyboard_handler/visibility_control.hpp"
   #include "keyboard_handler_base.hpp"
   
   class KeyboardHandlerUnixImpl : public KeyboardHandlerBase
   {
   public:
     using isattyFunction = std::function<int (int)>;
     using tcgetattrFunction = std::function<int (int, struct termios *)>;
     using tcsetattrFunction = std::function<int (int, int, const struct termios *)>;
     using readFunction = std::function<ssize_t(int, void *, size_t)>;
     using signal_handler_type = void (*)(int);
   
     KEYBOARD_HANDLER_PUBLIC
     KeyboardHandlerUnixImpl();
   
     KEYBOARD_HANDLER_PUBLIC
     explicit KeyboardHandlerUnixImpl(bool install_signal_handler);
   
     KEYBOARD_HANDLER_PUBLIC
     virtual ~KeyboardHandlerUnixImpl();
   
     KEYBOARD_HANDLER_PUBLIC
     std::string get_terminal_sequence(KeyboardHandlerUnixImpl::KeyCode key_code);
   
     KEYBOARD_HANDLER_PUBLIC
     static bool restore_buffer_mode_for_stdin();
   
     KEYBOARD_HANDLER_PUBLIC
     static signal_handler_type get_old_sigint_handler();
   
   protected:
     KEYBOARD_HANDLER_PUBLIC
     KeyboardHandlerUnixImpl(
       const readFunction & read_fn,
       const isattyFunction & isatty_fn,
       const tcgetattrFunction & tcgetattr_fn,
       const tcsetattrFunction & tcsetattr_fn,
       bool install_signal_handler = true);
   
     std::tuple<KeyCode, KeyModifiers> parse_input(const char * buff, ssize_t read_bytes);
   
     struct KeyMap
     {
       KeyCode inner_code;
       const char * terminal_sequence;
     };
   
     static const KeyMap DEFAULT_STATIC_KEY_MAP[];
   
     static const size_t STATIC_KEY_MAP_LENGTH;
   
   private:
     static void on_signal(int signal_number);
   
     static struct termios old_term_settings_;
     static tcsetattrFunction tcsetattr_fn_;
     static signal_handler_type old_sigint_handler_;
     bool install_signal_handler_ = false;
   
     std::thread key_handler_thread_;
     static std::atomic_bool exit_;
     const int stdin_fd_;
     std::unordered_map<std::string, KeyCode> key_codes_map_;
     std::exception_ptr thread_exception_ptr{nullptr};
   };
   
   #endif  // #ifndef _WIN32
   #endif  // KEYBOARD_HANDLER__KEYBOARD_HANDLER_UNIX_IMPL_HPP_