feat: add async support for init_completion

yazi-core/src/completion/completion.rs

@@ -2,8 +2,9 @@ use crate::{completion::CompletionOpt, Position};
 
 #[derive(Default)]
 pub struct Completion {
-	items:  Vec<String>,
-	cursor: usize,
+	items:          Vec<String>,
+	cursor:         usize,
+	pub identifier: String,
 
 	pub position:   Position,
 	pub column_cnt: u8,
@@ -15,6 +16,13 @@ impl Completion {
 	pub fn show(&mut self, opt: CompletionOpt) {
 		self.close();
 		self.visible = true;
+		self.identifier = format!(
+			"{}",
+			std::time::SystemTime::now()
+				.duration_since(std::time::UNIX_EPOCH)
+				.unwrap_or_default()
+				.as_millis()
+		);
 
 		self.items = opt.items;
 		self.position = opt.position;
@@ -24,6 +32,7 @@ impl Completion {
 
 	pub fn close(&mut self) -> bool {
 		self.cursor = 0;
+		self.identifier = String::new();
 		self.visible = false;
 		true
 	}

yazi-core/src/input/completion.rs

@@ -1,29 +1,43 @@
 use crossterm::event::KeyCode;
-use yazi_config::keymap::Key;
+use yazi_config::keymap::{Exec, Key, KeymapLayer};
 
-use crate::{completion::CompletionOpt, input::Input};
+use crate::{completion::CompletionOpt, emit, input::Input};
 
 impl Input {
 	pub fn complete(&mut self) -> bool {
 		if !self.completion.visible {
-			let current = self.snaps.current().value.as_str();
-			let result = self.init_completion.as_ref().map(|f| f(current)).unwrap_or_default();
-			match result.len() {
-				0 => false,
-				1 => {
-					if let Some(f) = self.finish_completion.as_ref() {
-						self.replace_str(f(current, result.get(0).unwrap()).as_str())
-					} else {
-						false
-					}
-				}
-				_ => {
-					self.completion.show(CompletionOpt::top().with_items(result));
-					true
+			if let Some(f) = self.init_completion.as_ref() {
+				let future = f(self.snaps.current().value.clone());
+				let id = self.completion.identifier.clone();
+				tokio::spawn(async move {
+					let result = future.await;
+					let mut exec = Exec::call("complete", result);
+					exec.named.insert("identifier".to_string(), id);
+					emit!(Call(exec.vec(), KeymapLayer::Input));
+				});
+			}
+		}
+		false
+	}
+
+	pub fn fill_completion(&mut self, exec: &Exec) -> bool {
+		if !exec.named.get("identifier").is_some_and(|id| *id == self.completion.identifier) {
+			return false;
+		};
+		match exec.args.len() {
+			0 => false,
+			1 => {
+				if let Some(f) = self.finish_completion.as_ref() {
+					self
+						.replace_str(f(self.snaps.current().value.as_str(), exec.args.get(0).unwrap()).as_str())
+				} else {
+					false
 				}
 			}
-		} else {
-			false
+			_ => {
+				self.completion.show(CompletionOpt::top().with_items(exec.args.clone()));
+				true
+			}
 		}
 	}
 

yazi-core/src/input/input.rs

@@ -6,7 +6,7 @@ use unicode_width::UnicodeWidthStr;
 use yazi_config::keymap::Key;
 use yazi_shared::{CharKind, InputError};
 
-use super::{mode::InputMode, op::InputOp, InputOpt, InputSnap, InputSnaps};
+use super::{mode::InputMode, op::InputOp, FinishCompletionType, InitCompletionType, InputOpt, InputSnap, InputSnaps};
 use crate::{completion::Completion, external, Position};
 
 #[derive(Default)]
@@ -25,8 +25,8 @@ pub struct Input {
 	pub(super) highlight: bool,
 
 	pub completion:               Completion,
-	pub(super) init_completion:   Option<Box<dyn Fn(&str) -> Vec<String> + Send>>,
-	pub(super) finish_completion: Option<Box<dyn Fn(&str, &str) -> String + Send>>,
+	pub(super) init_completion:   Option<InitCompletionType>,
+	pub(super) finish_completion: Option<FinishCompletionType>,
 }
 
 impl Input {

yazi-core/src/input/option.rs

@@ -1,15 +1,21 @@
+use std::{future::Future, pin::Pin};
+
 use ratatui::prelude::Rect;
 
 use crate::Position;
 
+pub type InitCompletionType =
+	Box<dyn Fn(String) -> Pin<Box<dyn Future<Output = Vec<String>> + Send>> + Send>;
+pub type FinishCompletionType = Box<dyn Fn(&str, &str) -> String + Send>;
+
 pub struct InputOpt {
 	pub title:             String,
 	pub value:             String,
 	pub position:          Position,
 	pub realtime:          bool,
 	pub highlight:         bool,
-	pub init_completion:   Option<Box<dyn Fn(&str) -> Vec<String> + Send>>,
-	pub finish_completion: Option<Box<dyn Fn(&str, &str) -> String + Send>>,
+	pub init_completion:   Option<InitCompletionType>,
+	pub finish_completion: Option<FinishCompletionType>,
 }
 
 impl InputOpt {
@@ -63,7 +69,7 @@ impl InputOpt {
 
 	#[inline]
 	pub fn with_completion<
-		F1: Fn(&str) -> Vec<String> + Send + 'static,
+		F1: Fn(String) -> Pin<Box<dyn Future<Output = Vec<String>> + Send>> + Send + 'static,
 		F2: Fn(&str, &str) -> String + Send + 'static,
 	>(
 		mut self,

yazi-core/src/tab/commands/cd.rs

@@ -62,30 +62,25 @@ impl Tab {
 			let mut result = emit!(Input(
 				InputOpt::top("Change directory:").with_value(target.to_string_lossy()).with_completion(
 					|prefix| {
-						let mut cmp_prefix = prefix;
-						if prefix.contains('/') {
-							let (old_prefix, old_file_prefix) = prefix.rsplit_once('/').unwrap();
-							cmp_prefix = old_file_prefix;
-							std::fs::read_dir(old_prefix.to_string() + "/")
-						} else {
-							std::fs::read_dir(".")
-						}
-						.ok()
-						.map(|list| {
-							list
-								.filter_map(|file| {
-									file.ok().and_then(|f| {
-										let name = f.file_name().to_string_lossy().to_string();
-										if f.metadata().is_ok_and(|m| m.is_dir()) && name.starts_with(cmp_prefix) {
-											Some(name)
-										} else {
-											None
-										}
-									})
-								})
-								.collect()
+						Box::pin(async move {
+							let mut cmp_prefix = prefix.as_str();
+							let mut result = vec![];
+							if let Ok(mut list) = if prefix.contains('/') {
+								let (old_prefix, old_file_prefix) = prefix.rsplit_once('/').unwrap();
+								cmp_prefix = old_file_prefix;
+								tokio::fs::read_dir(old_prefix.to_string() + "/").await
+							} else {
+								tokio::fs::read_dir(".").await
+							} {
+								while let Ok(Some(f)) = list.next_entry().await {
+									let name = f.file_name().to_string_lossy().to_string();
+									if f.metadata().await.is_ok_and(|m| m.is_dir()) && name.starts_with(cmp_prefix) {
+										result.push(name.clone())
+									}
+								}
+							}
+							result
 						})
-						.unwrap_or_default()
 					},
 					|current, new| {
 						if let Some((prefix, _)) = current.rsplit_once('/') {

yazi-fm/src/executor.rs

@@ -233,6 +233,9 @@ impl Executor {
 				let in_operating = exec.named.contains_key("in-operating");
 				return if in_operating { cx.input.move_in_operating(step) } else { cx.input.move_(step) };
 			}
+
+			// asynchronized completion
+			"complete" => return cx.input.fill_completion(exec),
 			_ => {}
 		}