yazi/yazi-core/src/files/files.rs
2023-11-07 08:42:02 +08:00

345 lines
7.5 KiB
Rust

use std::{collections::{BTreeMap, BTreeSet}, mem, ops::Deref, sync::atomic::Ordering};
use anyhow::Result;
use tokio::{fs, select, sync::mpsc::{self, UnboundedReceiver}};
use yazi_config::{manager::SortBy, MANAGER};
use yazi_shared::Url;
use super::{File, FilesSorter, FILES_TICKET};
pub struct Files {
items: Vec<File>,
hidden: Vec<File>,
ticket: u64,
pub(crate) version: u64,
pub sizes: BTreeMap<Url, u64>,
selected: BTreeSet<Url>,
sorter: FilesSorter,
show_hidden: bool,
}
impl Default for Files {
fn default() -> Self {
Self {
items: Default::default(),
hidden: Default::default(),
ticket: Default::default(),
version: Default::default(),
sizes: Default::default(),
selected: Default::default(),
sorter: Default::default(),
show_hidden: MANAGER.show_hidden,
}
}
}
impl Deref for Files {
type Target = Vec<File>;
fn deref(&self) -> &Self::Target { &self.items }
}
impl Files {
pub async fn from_dir(url: &Url) -> Result<UnboundedReceiver<File>> {
let mut it = fs::read_dir(url).await?;
let (tx, rx) = mpsc::unbounded_channel();
tokio::spawn(async move {
while let Ok(Some(item)) = it.next_entry().await {
select! {
_ = tx.closed() => break,
result = item.metadata() => {
if let Ok(meta) = result {
tx.send(File::from_meta(Url::from(item.path()), meta).await).ok();
}
}
}
}
});
Ok(rx)
}
}
impl Files {
#[inline]
pub fn select(&mut self, url: &Url, state: Option<bool>) -> bool {
let old = self.selected.contains(url);
let new = if let Some(new) = state { new } else { !old };
if new == old {
return false;
}
if new {
self.selected.insert(url.to_owned());
} else {
self.selected.remove(url);
}
true
}
pub fn select_all(&mut self, state: Option<bool>) -> bool {
match state {
Some(true) => {
let b = if self.selected.len() < self.items.len() {
true
} else {
self.items.iter().any(|f| !self.selected.contains(&f.url))
};
self.selected = self.iter().map(|f| f.url()).collect();
b
}
Some(false) => {
if self.selected.is_empty() {
return false;
}
let b = self.items.iter().any(|f| self.selected.contains(&f.url));
self.selected.clear();
b
}
None => {
for item in &self.items {
if self.selected.contains(&item.url) {
self.selected.remove(&item.url);
} else {
self.selected.insert(item.url());
}
}
!self.items.is_empty()
}
}
}
pub fn select_index(&mut self, indices: &BTreeSet<usize>, state: Option<bool>) -> bool {
let mut applied = false;
let paths: Vec<_> = self.pick(indices).iter().map(|f| f.url()).collect();
for path in paths {
applied |= self.select(&path, state);
}
applied
}
pub fn update_full(&mut self, mut items: Vec<File>) -> bool {
if !self.show_hidden {
(self.hidden, items) = items.into_iter().partition(|f| f.is_hidden());
}
self.ticket = FILES_TICKET.fetch_add(1, Ordering::Relaxed);
self.sorter.sort(&mut items, &self.sizes);
self.items = items;
self.version += 1;
true
}
pub fn update_part(&mut self, version: u64, items: Vec<File>) -> bool {
if !items.is_empty() {
if version != self.ticket {
return false;
}
if self.show_hidden {
self.items.extend(items);
} else {
let (hidden, items): (Vec<_>, Vec<_>) = items.into_iter().partition(|f| f.is_hidden());
self.items.extend(items);
self.hidden.extend(hidden);
}
self.sorter.sort(&mut self.items, &self.sizes);
self.version += 1;
return true;
}
self.ticket = version;
if self.items.is_empty() && self.hidden.is_empty() {
return false;
}
self.items.clear();
self.hidden.clear();
self.version += 1;
true
}
pub fn update_size(&mut self, items: BTreeMap<Url, u64>) -> bool {
self.sizes.extend(items);
if self.sorter.by == SortBy::Size {
self.sorter.sort(&mut self.items, &self.sizes);
self.version += 1;
}
true
}
pub fn update_creating(&mut self, mut todo: BTreeMap<Url, File>) -> bool {
if !self.show_hidden {
todo.retain(|_, f| !f.is_hidden());
}
let b = self.update_replacing(&mut todo);
if todo.is_empty() {
return b;
}
self.items.extend(todo.into_values());
self.sorter.sort(&mut self.items, &self.sizes);
self.version += 1;
true
}
pub fn update_deleting(&mut self, mut todo: BTreeSet<Url>) -> bool {
let mut removed = Vec::with_capacity(todo.len());
macro_rules! go {
($name:expr) => {
removed.clear();
for i in 0..$name.len() {
if todo.remove(&$name[i].url) {
removed.push(i);
if todo.is_empty() {
break;
}
}
}
for i in (0..removed.len()).rev() {
$name.remove(removed[i]);
}
};
}
let mut b = false;
if !todo.is_empty() {
go!(self.items);
b |= !removed.is_empty();
}
if !todo.is_empty() {
go!(self.hidden);
b |= !removed.is_empty();
}
b
}
pub fn update_replacing(&mut self, todo: &mut BTreeMap<Url, File>) -> bool {
if todo.is_empty() {
return false;
}
macro_rules! go {
($name:expr) => {
for i in 0..$name.len() {
if let Some(f) = todo.remove(&$name[i].url) {
$name[i] = f;
if todo.is_empty() {
self.version += 1;
return true;
}
}
}
};
}
let old = todo.len();
go!(self.items);
go!(self.hidden);
if old != todo.len() {
self.version += 1;
return true;
}
false
}
}
impl Files {
// --- Items
pub fn pick(&self, indices: &BTreeSet<usize>) -> Vec<&File> {
let mut items = Vec::with_capacity(indices.len());
for (i, item) in self.iter().enumerate() {
if indices.contains(&i) {
items.push(item);
}
}
items
}
#[inline]
pub fn position(&self, url: &Url) -> Option<usize> { self.iter().position(|f| &f.url == url) }
// --- Selected
pub fn selected(&self, pending: &BTreeSet<usize>, unset: bool) -> Vec<&File> {
if self.selected.is_empty() && (unset || pending.is_empty()) {
return Vec::new();
}
let selected: BTreeSet<_> = self.selected.iter().collect();
let pending: BTreeSet<_> =
pending.iter().filter_map(|&i| self.items.get(i)).map(|f| &f.url).collect();
let selected: BTreeSet<_> = if unset {
selected.difference(&pending).cloned().collect()
} else {
selected.union(&pending).cloned().collect()
};
let mut items = Vec::with_capacity(selected.len());
for item in &self.items {
if selected.contains(&item.url) {
items.push(item);
}
if items.len() == selected.len() {
break;
}
}
items
}
#[inline]
pub fn is_selected(&self, url: &Url) -> bool { self.selected.contains(url) }
#[inline]
pub fn has_selected(&self) -> bool {
if self.selected.is_empty() {
return false;
}
self.iter().any(|f| self.selected.contains(&f.url))
}
// --- Sorter
#[inline]
pub fn sorter(&self) -> &FilesSorter { &self.sorter }
pub fn set_sorter(&mut self, sorter: FilesSorter) -> bool {
if self.sorter == sorter {
return false;
}
self.sorter = sorter;
self.version += 1;
self.sorter.sort(&mut self.items, &self.sizes)
}
// --- Show hidden
pub fn set_show_hidden(&mut self, state: bool) -> bool {
if state == self.show_hidden {
return false;
} else if state && self.hidden.is_empty() {
return false;
}
if state {
self.items.append(&mut self.hidden);
self.sorter.sort(&mut self.items, &self.sizes);
} else {
let items = mem::take(&mut self.items);
(self.hidden, self.items) = items.into_iter().partition(|f| f.is_hidden());
}
self.show_hidden = state;
self.version += 1;
true
}
}