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// nixos-config - My current NixOS configuration
//
// Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This file is part of my nixos-config.
//
// You should have received a copy of the License along with this program.
// If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
use std::{io::stdout, path::PathBuf};
use anyhow::Result;
use crossterm::{
cursor::{MoveToRow, MoveUp},
event::{
Event, KeyEventKind, KeyModifiers, KeyboardEnhancementFlags, PopKeyboardEnhancementFlags,
PushKeyboardEnhancementFlags, read,
},
execute,
style::Print,
terminal::{self, Clear, ClearType, EnterAlternateScreen, LeaveAlternateScreen},
};
use crate::mapping::map_key::MapKey;
use super::MappingsTrie;
enum Status {
Done(PathBuf),
Stop,
}
impl MappingsTrie {
pub fn interactive_start(&self, home_path: PathBuf) -> Result<()> {
terminal::enable_raw_mode()?;
execute!(
stdout(),
EnterAlternateScreen,
PushKeyboardEnhancementFlags(KeyboardEnhancementFlags::DISAMBIGUATE_ESCAPE_CODES),
MoveToRow(0)
)?;
let output = self.interactive_start_inner(home_path);
execute!(stdout(), LeaveAlternateScreen, PopKeyboardEnhancementFlags)?;
terminal::disable_raw_mode()?;
match output? {
Status::Done(path_buf) => {
println!("{}", path_buf.display())
}
Status::Stop => (),
}
Ok(())
}
fn interactive_start_inner(&self, home_path: PathBuf) -> Result<Status> {
macro_rules! done {
($state:ident, $last_length:ident) => {{
let value = self
.0
.get(&$state)
.expect("Is some")
.value()
.expect("is some");
let path = home_path.join(&value.path);
terminal::disable_raw_mode()?;
execute!(
stdout(),
MoveUp($last_length as u16),
Clear(ClearType::FromCursorDown),
Print(format!("{}\n", path.display()))
)?;
terminal::enable_raw_mode()?;
return Ok(Status::Done(path));
}};
}
let mut state: Vec<MapKey> = vec![];
let mut last_length: usize = 1;
while let (trie, matched) = self.0.try_get(&state)
&& matched == state
{
if trie.value().is_some() {
done!(state, last_length);
} else {
if let Some(last) = state.last_mut()
&& let Some(mlast) = matched.last()
{
last.resolution = mlast.resolution;
mlast.part_path.clone_into(&mut last.part_path);
}
}
{
terminal::disable_raw_mode()?;
let string = trie.to_string();
execute!(
stdout(),
MoveUp(last_length as u16),
Clear(ClearType::FromCursorDown),
Print(format!(
"Current state: {}\n",
self.current_progress(home_path.display().to_string(), &state)
)),
Print(&string)
)?;
last_length = string.lines().count() + 1;
terminal::enable_raw_mode()?;
}
if let Event::Key(event) = read()?
&& event.kind == KeyEventKind::Press
{
match event.code {
crossterm::event::KeyCode::Backspace => {
state.pop();
}
crossterm::event::KeyCode::Enter => done!(state, last_length),
crossterm::event::KeyCode::Esc => break,
crossterm::event::KeyCode::Char(char) => {
if event.modifiers == KeyModifiers::CONTROL && char == 'c' {
break;
} else {
state.push(MapKey {
key: char,
resolution: 0,
part_path: String::new(),
});
}
}
crossterm::event::KeyCode::Left
| crossterm::event::KeyCode::Right
| crossterm::event::KeyCode::Up
| crossterm::event::KeyCode::Down
| crossterm::event::KeyCode::Home
| crossterm::event::KeyCode::End
| crossterm::event::KeyCode::PageUp
| crossterm::event::KeyCode::PageDown
| crossterm::event::KeyCode::Tab
| crossterm::event::KeyCode::BackTab
| crossterm::event::KeyCode::Delete
| crossterm::event::KeyCode::Insert
| crossterm::event::KeyCode::F(_)
| crossterm::event::KeyCode::Null
| crossterm::event::KeyCode::CapsLock
| crossterm::event::KeyCode::ScrollLock
| crossterm::event::KeyCode::NumLock
| crossterm::event::KeyCode::PrintScreen
| crossterm::event::KeyCode::Pause
| crossterm::event::KeyCode::Menu
| crossterm::event::KeyCode::KeypadBegin
| crossterm::event::KeyCode::Media(_)
| crossterm::event::KeyCode::Modifier(_) => (),
}
}
}
Ok(Status::Stop)
}
fn current_progress(&self, home_path: String, state: &[MapKey]) -> String {
state
.iter()
.map(|mk| &mk.part_path)
.fold(home_path, |acc, part| format!("{acc}/{part}"))
}
}
|
