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use log::trace;
use std::path::{Path, PathBuf};
use walkdir::WalkDir;
#[derive(Debug, thiserror::Error)]
pub enum SourceDirError {
#[error("failed to list files in source directory: {0}")]
WalkDir(PathBuf, #[source] walkdir::Error),
}
pub struct SourceDir {
path: PathBuf,
files: Vec<PathBuf>,
artificial: bool,
}
impl SourceDir {
pub fn new(path: &Path) -> Self {
Self {
path: path.into(),
files: vec![],
artificial: false,
}
}
pub fn insert_for_tests<P>(&mut self, path: P)
where
P: AsRef<Path>,
{
self.artificial = true;
self.insert(path.as_ref());
}
pub fn insert(&mut self, path: &Path) {
trace!("Source Dir::insert: path={}", path.display());
self.files.push(path.into());
}
pub fn scan(&mut self) -> Result<(), SourceDirError> {
if self.artificial {
trace!("SourceDir::scan: artificial mode, not actually scanning");
} else {
trace!("SourceDir::scan: find files in {}", self.path.display());
for e in WalkDir::new(&self.path) {
let e = e.map_err(|err| SourceDirError::WalkDir(self.path.clone(), err))?;
let path = e.path();
trace!("SourceDir::scan: found {}", path.display());
self.insert(path);
}
}
Ok(())
}
pub fn files(&self) -> &[PathBuf] {
&self.files
}
}
#[derive(Default)]
pub struct PathFilter {
excluded_substrings: Vec<&'static str>,
excluded_suffixes: Vec<&'static str>,
}
impl PathFilter {
pub fn new(subs: &[&'static str], suffixes: &[&'static str]) -> Self {
Self {
excluded_substrings: subs.to_vec(),
excluded_suffixes: suffixes.to_vec(),
}
}
pub fn exclude_substring(&mut self, s: &'static str) {
self.excluded_substrings.push(s);
}
pub fn exclude_suffix(&mut self, s: &'static str) {
self.excluded_suffixes.push(s);
}
pub fn is_included<P>(&self, path: P) -> bool
where
P: AsRef<Path>,
{
let path = path.as_ref();
let include = {
let path = path.to_string_lossy();
for pat in self.excluded_suffixes.iter() {
if path.ends_with(pat) {
return false;
}
}
for pat in self.excluded_substrings.iter() {
if path.contains(pat) {
return false;
}
}
true
};
if include {
trace!("include {}", path.display());
} else {
trace!("exclude {}", path.display());
}
include
}
}
#[cfg(test)]
mod test {
use super::PathFilter;
#[test]
fn includes_dotgit_by_default() {
let filter = PathFilter::default();
assert!(filter.is_included(".git"));
}
#[test]
fn excludes_dotgit_if_requested() {
let mut filter = PathFilter::default();
filter.exclude_substring(".git");
assert!(!filter.is_included(".git"));
}
#[test]
fn includes_footilde_by_default() {
let filter = PathFilter::default();
assert!(filter.is_included("foo~"));
}
#[test]
fn includes_footildebar_if_tilde_suffix_is_excluded() {
let mut filter = PathFilter::default();
filter.exclude_suffix("~");
assert!(filter.is_included("foo~bar"));
}
#[test]
fn excludes_footilde_if_tilde_suffix_is_excluded() {
let mut filter = PathFilter::default();
filter.exclude_suffix("~");
assert!(!filter.is_included("foo~"));
}
}
|
