refactor: add termios abstraction

1 files changed, 54 insertions, 0 deletions

diff --git a/src/engine/io/terminal.cpp b/src/engine/io/terminal.cpp
new file mode 100644
index 0000000..e6d7d3a
--- /dev/null
+++ b/src/engine/io/terminal.cpp
@@ -0,0 +1,54 @@
+#include "terminal.hpp"
+
+TerminalState::TerminalState(termios term_attrs) noexcept : _term_attrs(term_attrs) {}
+
+void TerminalState::set_input_mode_flag(TerminalInputModeFlag flag, bool is_on) noexcept
+{
+	auto flag_num = static_cast<tcflag_t>(flag);
+
+	_term_attrs.c_iflag &= is_on ? flag_num : ~flag_num;
+}
+
+void TerminalState::set_output_mode_flag(TerminalOutputModeFlag flag, bool is_on) noexcept
+{
+	auto flag_num = static_cast<tcflag_t>(flag);
+
+	_term_attrs.c_oflag &= is_on ? flag_num : ~flag_num;
+}
+
+void TerminalState::set_control_mode_flag(
+	TerminalControlModeFlag flag,
+	bool is_on) noexcept
+{
+	auto flag_num = static_cast<tcflag_t>(flag);
+
+	_term_attrs.c_cflag &= is_on ? flag_num : ~flag_num;
+}
+
+void TerminalState::set_local_mode_flag(TerminalLocalModeFlag flag, bool is_on) noexcept
+{
+	auto flag_num = static_cast<tcflag_t>(flag);
+
+	_term_attrs.c_lflag &= is_on ? flag_num : ~flag_num;
+}
+
+auto TerminalState::get_attributes() noexcept -> termios
+{
+	return _term_attrs;
+}
+
+auto get_terminal_state(int term_fd) noexcept -> TerminalState
+{
+	termios term_attrs{};
+
+	tcgetattr(term_fd, &term_attrs);
+
+	return TerminalState(term_attrs);
+}
+
+void set_terminal_state(int term_fd, TerminalState state) noexcept
+{
+	auto state_attrs = state.get_attributes();
+
+	tcsetattr(term_fd, TCSAFLUSH, &state_attrs);
+}