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feat(channels): new channel for directories and associated transitions (
#130)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| use crate::channels::{OnAir, TelevisionChannel}; | ||
| use crate::entry::{Entry, PreviewCommand, PreviewType}; | ||
| use devicons::FileIcon; | ||
| use std::collections::HashSet; | ||
| use std::path::PathBuf; | ||
| use television_fuzzy::matcher::{config::Config, injector::Injector, Matcher}; | ||
| use television_utils::files::{walk_builder, DEFAULT_NUM_THREADS}; | ||
|
|
||
| pub struct Channel { | ||
| matcher: Matcher<String>, | ||
| crawl_handle: tokio::task::JoinHandle<()>, | ||
| // PERF: cache results (to make deleting characters smoother) with | ||
| // a shallow stack of sub-patterns as keys (e.g. "a", "ab", "abc") | ||
| } | ||
|
|
||
| impl Channel { | ||
| pub fn new(paths: Vec<PathBuf>) -> Self { | ||
| let matcher = Matcher::new(Config::default().match_paths(true)); | ||
| // start loading files in the background | ||
| let crawl_handle = tokio::spawn(load_dirs(paths, matcher.injector())); | ||
| Channel { | ||
| matcher, | ||
| crawl_handle, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl Default for Channel { | ||
| fn default() -> Self { | ||
| Self::new(vec![std::env::current_dir().unwrap()]) | ||
| } | ||
| } | ||
|
|
||
| impl From<&mut TelevisionChannel> for Channel { | ||
| fn from(value: &mut TelevisionChannel) -> Self { | ||
| match value { | ||
| c @ TelevisionChannel::GitRepos(_) => { | ||
| let entries = c.results(c.result_count(), 0); | ||
| Self::new( | ||
| entries | ||
| .iter() | ||
| .map(|entry| PathBuf::from(entry.name.clone())) | ||
| .collect(), | ||
| ) | ||
| } | ||
| c @ TelevisionChannel::Dirs(_) => { | ||
| let entries = c.results(c.result_count(), 0); | ||
| Self::new( | ||
| entries | ||
| .iter() | ||
| .map(|entry| PathBuf::from(&entry.name)) | ||
| .collect::<HashSet<_>>() | ||
| .into_iter() | ||
| .collect(), | ||
| ) | ||
| } | ||
| _ => unreachable!(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[cfg(unix)] | ||
| const PREVIEW_COMMAND: &str = "ls -la --color=always {}"; | ||
|
|
||
| #[cfg(windows)] | ||
| const PREVIEW_COMMAND: &str = "dir /Q {}"; | ||
|
|
||
| impl OnAir for Channel { | ||
| fn find(&mut self, pattern: &str) { | ||
| self.matcher.find(pattern); | ||
| } | ||
|
|
||
| fn results(&mut self, num_entries: u32, offset: u32) -> Vec<Entry> { | ||
| self.matcher.tick(); | ||
| self.matcher | ||
| .results(num_entries, offset) | ||
| .into_iter() | ||
| .map(|item| { | ||
| let path = item.matched_string; | ||
| Entry::new( | ||
| path.clone(), | ||
| PreviewType::Command(PreviewCommand::new( | ||
| PREVIEW_COMMAND, | ||
| " ", | ||
| )), | ||
| ) | ||
| .with_name_match_ranges(item.match_indices) | ||
| .with_icon(FileIcon::from(&path)) | ||
| }) | ||
| .collect() | ||
| } | ||
|
|
||
| fn get_result(&self, index: u32) -> Option<Entry> { | ||
| self.matcher.get_result(index).map(|item| { | ||
| let path = item.matched_string; | ||
| Entry::new( | ||
| path.clone(), | ||
| PreviewType::Command(PreviewCommand::new( | ||
| PREVIEW_COMMAND, | ||
| " ", | ||
| )), | ||
| ) | ||
| .with_icon(FileIcon::from(&path)) | ||
| }) | ||
| } | ||
|
|
||
| fn result_count(&self) -> u32 { | ||
| self.matcher.matched_item_count | ||
| } | ||
|
|
||
| fn total_count(&self) -> u32 { | ||
| self.matcher.total_item_count | ||
| } | ||
|
|
||
| fn running(&self) -> bool { | ||
| self.matcher.status.running | ||
| } | ||
|
|
||
| fn shutdown(&self) { | ||
| self.crawl_handle.abort(); | ||
| } | ||
| } | ||
|
|
||
| #[allow(clippy::unused_async)] | ||
| async fn load_dirs(paths: Vec<PathBuf>, injector: Injector<String>) { | ||
| if paths.is_empty() { | ||
| return; | ||
| } | ||
| let current_dir = std::env::current_dir().unwrap(); | ||
| let mut builder = | ||
| walk_builder(&paths[0], *DEFAULT_NUM_THREADS, None, None); | ||
| paths[1..].iter().for_each(|path| { | ||
| builder.add(path); | ||
| }); | ||
| let walker = builder.build_parallel(); | ||
|
|
||
| walker.run(|| { | ||
| let injector = injector.clone(); | ||
| let current_dir = current_dir.clone(); | ||
| Box::new(move |result| { | ||
| if let Ok(entry) = result { | ||
| if entry.file_type().unwrap().is_dir() { | ||
| let dir_path = &entry | ||
| .path() | ||
| .strip_prefix(¤t_dir) | ||
| .unwrap_or(entry.path()) | ||
| .to_string_lossy(); | ||
| if dir_path == "" { | ||
| return ignore::WalkState::Continue; | ||
| } | ||
| let () = injector.push(dir_path.to_string(), |e, cols| { | ||
| cols[0] = e.clone().into(); | ||
| }); | ||
| } | ||
| } | ||
| ignore::WalkState::Continue | ||
| }) | ||
| }); | ||
| } |
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