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use std::collections::{hash_map::Entry, HashMap};
use serde_derive::Deserialize;
use termion::event::Key;
use super::{parse_to_config_file, ConfigStructure, Flattenable};
use crate::commands::{self, CommandKeybind, JoshutoCommand};
use crate::util::key_mapping::str_to_key;
use crate::KEYMAP_FILE;
pub type JoshutoCommandMapping = HashMap<Key, CommandKeybind>;
#[derive(Debug, Deserialize)]
struct JoshutoMapCommand {
pub command: String,
#[serde(default)]
pub args: Vec<String>,
pub keys: Vec<String>,
}
#[derive(Debug, Deserialize)]
struct JoshutoRawCommandMapping {
#[serde(default)]
mapcommand: Vec<JoshutoMapCommand>,
}
impl Flattenable<JoshutoCommandMapping> for JoshutoRawCommandMapping {
fn flatten(self) -> JoshutoCommandMapping {
let mut keymaps = JoshutoCommandMapping::new();
for m in self.mapcommand {
match commands::from_args(m.command, m.args) {
Ok(command) => {
let keycodes: Vec<&str> = m.keys.iter().map(|s| s.as_str()).collect();
let result = insert_keycommand(&mut keymaps, command, &keycodes);
match result {
Ok(_) => {}
Err(e) => eprintln!("{}", e),
}
}
Err(e) => eprintln!("{}", e.cause()),
}
}
keymaps
}
}
impl ConfigStructure for JoshutoCommandMapping {
fn get_config() -> Self {
parse_to_config_file::<JoshutoRawCommandMapping, JoshutoCommandMapping>(KEYMAP_FILE)
.unwrap_or_else(Self::default)
}
}
fn insert_keycommand(
keymap: &mut JoshutoCommandMapping,
keycommand: Box<dyn JoshutoCommand>,
keycodes: &[&str],
) -> Result<(), String> {
let keycode_len = keycodes.len();
if keycode_len == 0 {
return Ok(());
}
let key = match str_to_key(keycodes[0]) {
Some(k) => k,
None => return Err(format!("Unknown keycode: {}", keycodes[0])),
};
if keycode_len == 1 {
match keymap.entry(key) {
Entry::Occupied(_) => {
return Err(format!("Error: Keybindings ambiguous for {}", keycommand))
}
Entry::Vacant(entry) => entry.insert(CommandKeybind::SimpleKeybind(keycommand)),
};
return Ok(());
}
match keymap.entry(key) {
Entry::Occupied(mut entry) => match entry.get_mut() {
CommandKeybind::CompositeKeybind(ref mut m) => {
insert_keycommand(m, keycommand, &keycodes[1..])
}
_ => Err(format!("Error: Keybindings ambiguous for {}", keycommand)),
},
Entry::Vacant(entry) => {
let mut new_map = JoshutoCommandMapping::new();
let result = insert_keycommand(&mut new_map, keycommand, &keycodes[1..]);
if result.is_ok() {
let composite_command = CommandKeybind::CompositeKeybind(new_map);
entry.insert(composite_command);
}
result
}
}
}
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