2018-12-18 10:29:14 +01:00
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use std::{
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fs,
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path::{Path, PathBuf},
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thread::JoinHandle,
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};
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2018-12-18 11:35:05 +01:00
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use walkdir::{DirEntry, WalkDir};
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2018-12-18 10:29:14 +01:00
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use crossbeam_channel::{Sender, Receiver};
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2018-12-18 11:35:05 +01:00
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use thread_worker::{WorkerHandle};
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use crate::VfsRoot;
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pub(crate) enum Task {
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ScanRoot {
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root: VfsRoot,
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path: PathBuf,
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filter: Box<FnMut(&DirEntry) -> bool + Send>,
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},
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}
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2018-12-18 10:29:14 +01:00
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2018-12-18 11:18:55 +01:00
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#[derive(Debug)]
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2018-12-18 11:35:05 +01:00
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pub(crate) struct FileEvent {
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pub(crate) path: PathBuf,
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pub(crate) kind: FileEventKind,
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2018-12-18 11:18:55 +01:00
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}
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2018-12-18 10:29:14 +01:00
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2018-12-18 11:18:55 +01:00
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#[derive(Debug)]
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2018-12-18 11:35:05 +01:00
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pub(crate) enum FileEventKind {
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2018-12-18 11:18:55 +01:00
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Add(String),
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}
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2018-12-18 10:29:14 +01:00
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2018-12-18 11:35:05 +01:00
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pub(crate) type Worker = thread_worker::Worker<Task, (PathBuf, Vec<FileEvent>)>;
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pub(crate) fn start() -> (Worker, WorkerHandle) {
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thread_worker::spawn("vfs", 128, |input_receiver, output_sender| {
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input_receiver
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.map(handle_task)
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.for_each(|it| output_sender.send(it))
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})
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}
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2018-12-18 11:23:23 +01:00
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2018-12-18 11:35:05 +01:00
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fn handle_task(task: Task) -> (PathBuf, Vec<FileEvent>) {
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let Task::ScanRoot { path, .. } = task;
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log::debug!("loading {} ...", path.as_path().display());
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let events = load_root(path.as_path());
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log::debug!("... loaded {}", path.as_path().display());
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(path, events)
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2018-12-18 11:18:55 +01:00
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}
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2018-12-18 10:29:14 +01:00
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2018-12-18 11:18:55 +01:00
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fn load_root(path: &Path) -> Vec<FileEvent> {
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let mut res = Vec::new();
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for entry in WalkDir::new(path) {
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let entry = match entry {
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Ok(entry) => entry,
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Err(e) => {
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log::warn!("watcher error: {}", e);
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continue;
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}
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};
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if !entry.file_type().is_file() {
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continue;
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}
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let path = entry.path();
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if path.extension().and_then(|os| os.to_str()) != Some("rs") {
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continue;
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}
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let text = match fs::read_to_string(path) {
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Ok(text) => text,
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Err(e) => {
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log::warn!("watcher error: {}", e);
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continue;
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}
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};
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res.push(FileEvent {
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path: path.to_owned(),
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kind: FileEventKind::Add(text),
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})
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}
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res
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}
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