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use std::{
fmt,
fs,
path::{Path, PathBuf},
};
use walkdir::{DirEntry, WalkDir};
use thread_worker::{WorkerHandle};
use relative_path::RelativePathBuf;
use crate::{VfsRoot, has_rs_extension};
pub(crate) struct Task {
pub(crate) root: VfsRoot,
pub(crate) path: PathBuf,
pub(crate) filter: Box<Fn(&DirEntry) -> bool + Send>,
}
pub struct TaskResult {
pub(crate) root: VfsRoot,
pub(crate) files: Vec<(RelativePathBuf, String)>,
}
impl fmt::Debug for TaskResult {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str("TaskResult { ... }")
}
}
pub(crate) type Worker = thread_worker::Worker<Task, TaskResult>;
pub(crate) fn start() -> (Worker, WorkerHandle) {
thread_worker::spawn("vfs", 128, |input_receiver, output_sender| {
input_receiver
.into_iter()
.map(handle_task)
.try_for_each(|it| output_sender.send(it))
.unwrap()
})
}
fn handle_task(task: Task) -> TaskResult {
let Task { root, path, filter } = task;
log::debug!("loading {} ...", path.as_path().display());
let files = load_root(path.as_path(), &*filter);
log::debug!("... loaded {}", path.as_path().display());
TaskResult { root, files }
}
fn load_root(root: &Path, filter: &dyn Fn(&DirEntry) -> bool) -> Vec<(RelativePathBuf, String)> {
let mut res = Vec::new();
for entry in WalkDir::new(root).into_iter().filter_entry(filter) {
let entry = match entry {
Ok(entry) => entry,
Err(e) => {
log::warn!("watcher error: {}", e);
continue;
}
};
if !entry.file_type().is_file() {
continue;
}
let path = entry.path();
if !has_rs_extension(path) {
continue;
}
let text = match fs::read_to_string(path) {
Ok(text) => text,
Err(e) => {
log::warn!("watcher error: {}", e);
continue;
}
};
let path = RelativePathBuf::from_path(path.strip_prefix(root).unwrap()).unwrap();
res.push((path.to_owned(), text))
}
res
}
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