135 lines
3.8 KiB
Rust
135 lines
3.8 KiB
Rust
use std::{
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ffi::OsString,
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path::{Path, PathBuf, MAIN_SEPARATOR},
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sync::Arc,
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};
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use miette::{IntoDiagnostic, Result};
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use tokio::io::{AsyncBufReadExt, BufReader};
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use tracing::{info, trace, trace_span};
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use watchexec::{
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error::RuntimeError,
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event::{
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filekind::{FileEventKind, ModifyKind},
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Event, Priority, Tag,
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},
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filter::Filterer,
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};
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use watchexec_filterer_globset::GlobsetFilterer;
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use crate::args::{Args, FsEvent};
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pub async fn globset(args: &Args) -> Result<Arc<WatchexecFilterer>> {
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let (project_origin, workdir) = super::common::dirs(args).await?;
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let vcs_types = super::common::vcs_types(&project_origin).await;
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let ignore_files = super::common::ignores(args, &vcs_types, &project_origin).await;
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let mut ignores = Vec::new();
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if !args.no_default_ignore {
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ignores.extend([
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(format!("**{MAIN_SEPARATOR}.DS_Store"), None),
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(String::from("watchexec.*.log"), None),
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(String::from("*.py[co]"), None),
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(String::from("#*#"), None),
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(String::from(".#*"), None),
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(String::from(".*.kate-swp"), None),
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(String::from(".*.sw?"), None),
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(String::from(".*.sw?x"), None),
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(format!("**{MAIN_SEPARATOR}.bzr{MAIN_SEPARATOR}**"), None),
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(format!("**{MAIN_SEPARATOR}_darcs{MAIN_SEPARATOR}**"), None),
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(
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format!("**{MAIN_SEPARATOR}.fossil-settings{MAIN_SEPARATOR}**"),
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None,
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),
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(format!("**{MAIN_SEPARATOR}.git{MAIN_SEPARATOR}**"), None),
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(format!("**{MAIN_SEPARATOR}.hg{MAIN_SEPARATOR}**"), None),
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(format!("**{MAIN_SEPARATOR}.pijul{MAIN_SEPARATOR}**"), None),
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(format!("**{MAIN_SEPARATOR}.svn{MAIN_SEPARATOR}**"), None),
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]);
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}
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let mut filters = args
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.filter_patterns
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.iter()
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.map(|f| (f.to_owned(), Some(workdir.clone())))
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.collect::<Vec<_>>();
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for filter_file in &args.filter_files {
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filters.extend(read_filter_file(filter_file).await?);
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}
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ignores.extend(
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args.ignore_patterns
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.iter()
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.map(|f| (f.to_owned(), Some(workdir.clone()))),
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);
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let exts = args
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.filter_extensions
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.iter()
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.map(|e| OsString::from(e.strip_prefix('.').unwrap_or(e)));
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info!("initialising Globset filterer");
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Ok(Arc::new(WatchexecFilterer {
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inner: GlobsetFilterer::new(project_origin, filters, ignores, ignore_files, exts)
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.await
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.into_diagnostic()?,
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fs_events: args.filter_fs_events.clone(),
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}))
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}
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async fn read_filter_file(path: &Path) -> Result<Vec<(String, Option<PathBuf>)>> {
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let _span = trace_span!("loading filter file", ?path).entered();
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let file = tokio::fs::File::open(path).await.into_diagnostic()?;
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let mut filters =
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Vec::with_capacity(file.metadata().await.map(|m| m.len() as usize).unwrap_or(0) / 20);
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let reader = BufReader::new(file);
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let mut lines = reader.lines();
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while let Some(line) = lines.next_line().await.into_diagnostic()? {
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let line = line.trim();
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if line.is_empty() || line.starts_with('#') {
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continue;
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}
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trace!(?line, "adding filter line");
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filters.push((line.to_owned(), Some(path.to_owned())));
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}
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Ok(filters)
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}
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/// A custom filterer that combines the library's Globset filterer and a switch for --no-meta
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#[derive(Debug)]
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pub struct WatchexecFilterer {
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inner: GlobsetFilterer,
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fs_events: Vec<FsEvent>,
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}
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impl Filterer for WatchexecFilterer {
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fn check_event(&self, event: &Event, priority: Priority) -> Result<bool, RuntimeError> {
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for tag in &event.tags {
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if let Tag::FileEventKind(fek) = tag {
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let normalised = match fek {
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FileEventKind::Access(_) => FsEvent::Access,
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FileEventKind::Modify(ModifyKind::Name(_)) => FsEvent::Rename,
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FileEventKind::Modify(ModifyKind::Metadata(_)) => FsEvent::Metadata,
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FileEventKind::Modify(_) => FsEvent::Modify,
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FileEventKind::Create(_) => FsEvent::Create,
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FileEventKind::Remove(_) => FsEvent::Remove,
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_ => continue,
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};
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if !self.fs_events.contains(&normalised) {
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return Ok(false);
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}
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}
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}
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self.inner.check_event(event, priority)
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}
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}
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