anyhow_std/fs/
readdir.rs

1use crate::fs::DirEntry;
2use anyhow::Context;
3use std::path::{Path, PathBuf};
4
5/// Wraps [std::fs::ReadDir] to provide the directory as error context
6#[derive(Debug, derive_more::From, derive_more::Into)]
7pub struct ReadDir {
8    rd: std::fs::ReadDir,
9    path: PathBuf,
10}
11
12impl ReadDir {
13    pub(crate) fn from_path(p: &Path) -> std::io::Result<Self> {
14        p.read_dir().map(|rd| ReadDir {
15            rd,
16            path: p.to_path_buf(),
17        })
18    }
19}
20
21impl Iterator for ReadDir {
22    type Item = anyhow::Result<DirEntry>;
23
24    fn next(&mut self) -> Option<Self::Item> {
25        wrap_read_dir_item(&self.path, self.rd.next())
26    }
27}
28
29fn wrap_read_dir_item(
30    path: &Path,
31    item: Option<std::io::Result<std::fs::DirEntry>>,
32) -> Option<anyhow::Result<DirEntry>> {
33    item.map(|stditem| {
34        stditem
35            .map(DirEntry::from)
36            .with_context(|| format!("while reading directory {:?}", path.display()))
37    })
38}
39
40#[cfg(test)]
41mod tests;
anyhow_std/fs/readdir.rs

anyhow_std/fs/
readdir.rs
