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use crate::fsentry::{FilesystemEntry, FsEntryError};
use log::{debug, error};
use std::path::Path;
use walkdir::{DirEntry, IntoIter, WalkDir};
/// Iterator over file system entries in a directory tree.
pub struct FsIterator {
iter: IntoIter,
}
#[derive(Debug, thiserror::Error)]
pub enum FsIterError {
#[error(transparent)]
WalkError(#[from] walkdir::Error),
#[error(transparent)]
IoError(#[from] std::io::Error),
#[error(transparent)]
FsEntryError(#[from] FsEntryError),
}
pub type FsIterResult<T> = Result<T, FsIterError>;
impl FsIterator {
pub fn new(root: &Path) -> Self {
Self {
iter: WalkDir::new(root).into_iter(),
}
}
}
impl Iterator for FsIterator {
type Item = FsIterResult<FilesystemEntry>;
fn next(&mut self) -> Option<Self::Item> {
let next = self.iter.next();
debug!("walkdir found: {:?}", next);
match next {
None => None,
Some(Ok(entry)) => Some(new_entry(&entry)),
Some(Err(err)) => Some(Err(err.into())),
}
}
}
fn new_entry(e: &DirEntry) -> FsIterResult<FilesystemEntry> {
let path = e.path();
let meta = std::fs::metadata(path);
debug!("metadata for {:?}: {:?}", path, meta);
let meta = match meta {
Ok(meta) => meta,
Err(err) => {
error!("failed to get metadata: {}", err);
return Err(err.into());
}
};
let entry = FilesystemEntry::from_metadata(path, &meta)?;
debug!("FileSystemEntry for {:?}: {:?}", path, entry);
Ok(entry)
}
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