1 files changed, 74 insertions, 0 deletions
diff --git a/src/workarea.rs b/src/workarea.rs
new file mode 100644
index 0000000..d5d2e13
--- /dev/null
+++ b/src/workarea.rs
@@ -0,0 +1,74 @@
+use std::fs::File;
+use std::io::{BufRead, BufReader};
+use std::ops::Deref;
+use std::path::{Path, PathBuf};
+use std::sync::Arc;
+use std::time::{Instant, SystemTime};
+
+use walkdir::WalkDir;
+
+pub struct IgnoreFile {
+	globs: Arc<[Arc<str>]>,
+}
+
+pub struct WorkFileMetadata {
+	name: Arc<Path>,
+	last_modified: Instant,
+}
+
+fn equal_to_path(a: impl AsRef<Path>, b: impl AsRef<Path>) -> bool {
+	a.as_ref() == b.as_ref()
+}
+pub fn included_files(
+	root: impl AsRef<Path>,
+	ignored_files: Option<&IgnoreFile>,
+	since: Option<SystemTime>,
+) -> std::io::Result<Vec<PathBuf>> {
+	let mut files = Vec::new();
+
+	let walker = WalkDir::new(root).into_iter().filter_entry(|entry| {
+		!equal_to_path(entry.path(), ".pj")
+			&& !equal_to_path(entry.path(), ".ignore")
+			&& entry
+				.metadata()
+				.ok()
+				.is_some_and(|metadata| metadata.is_file())
+			&& ignored_files
+				.is_none_or(|file| !file.should_ignore(entry.path().to_string_lossy().deref()))
+			&& since
+				.zip(entry.metadata().ok())
+				.and_then(|(since, metadata)| {
+					metadata.modified().ok().map(|modified| (since, modified))
+				})
+				.is_none_or(|(since, modified)| since < modified)
+	});
+
+	for entry in walker {
+		files.push(entry?.into_path());
+	}
+
+	Ok(files)
+}
+
+impl IgnoreFile {
+	fn open(root: impl AsRef<Path>) -> std::io::Result<Self> {
+		let mut globs = Vec::new();
+		globs.push(String::from(".pj/"));
+
+		let ignore_file = Path::join(root.as_ref(), ".ignore");
+		let ignore_file = BufReader::new(File::open(ignore_file)?);
+		for line in ignore_file.lines() {
+			globs.push(line?);
+		}
+
+		Ok(Self {
+			globs: globs.iter().map(|s| s.deref().into()).collect(),
+		})
+	}
+
+	fn should_ignore(&self, path: &str) -> bool {
+		self.globs
+			.iter()
+			.any(|glob| fast_glob::glob_match(&**glob, path))
+	}
+}