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/*
* Ricochet - A minimalist CLI web browser for fast, distraction-free navigation.
* Copyright (C) 2026 Richard Qin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ricochet/tui/terminal.hh"
#include <cstdlib>
#include <iostream>
#include <unistd.h>
namespace ricochet::tui {
Terminal::Terminal() {
// get terminal attributes
tcgetattr(STDIN_FILENO, &original_termios_);
struct termios raw = original_termios_;
// close echo, close canonical mode
// close terminal signals (ISIG disable Ctrl+C and Ctrl+Z, let the program handle it)
raw.c_lflag &= ~(ECHO | ICANON | ISIG);
// close software flow control (Ctrl+S, Ctrl+Q)
raw.c_iflag &= ~(IXON | ICRNL);
// apply new terminal attributes
tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw);
}
Terminal::~Terminal() {
// RAII: restore terminal attributes when program exits
tcsetattr(STDIN_FILENO, TCSAFLUSH, &original_termios_);
}
char Terminal::read_key() const { // NOLINT(readability-convert-member-functions-to-static)
char c = '\0';
// read 1 byte
if (read(STDIN_FILENO, &c, 1) == -1) {
return '\0';
}
return c;
}
void Terminal::clear_screen() const { // NOLINT(readability-convert-member-functions-to-static)
// ANSI escape codes: \x1b[2J clear screen, \x1b[H move cursor to (1,1)
std::cout << "\x1b[2J\x1b[H";
}
} // namespace ricochet::tui
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