eb80c07c85
- Add webdav.rs module: VfsDavFs, VfsDavFile, VfsDavMetaData - Implement DavFileSystem + Clone for GuardedFileSystem blanket impl - Add clone_boxed to VfsBackend trait (required for Sync) - Update CLI webdav.rs to use VFS instead of SQLite - Add bytes dependency - All 155 tests pass
234 lines
7.1 KiB
Rust
234 lines
7.1 KiB
Rust
use super::open_flags::OpenFlags;
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use super::util;
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use super::{VfsBackend, VfsDirEntry, VfsError, VfsFile, VfsStat};
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use std::fs::{self, File, OpenOptions};
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use std::io::{Read, Seek, SeekFrom, Write};
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use std::os::unix::fs::{MetadataExt, PermissionsExt};
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use std::path::{Path, PathBuf};
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/// 本地文件系统实现（直接包装 std::fs，不做路径解析）
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/// 路径解析由上层（SftpHandler）负责
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pub struct LocalFs;
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impl Default for LocalFs {
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fn default() -> Self {
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Self::new()
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}
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}
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impl LocalFs {
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pub fn new() -> Self {
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Self
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}
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}
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struct LocalFile {
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file: File,
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}
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impl VfsFile for LocalFile {
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fn read(&mut self, buf: &mut [u8]) -> Result<usize, VfsError> {
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self.file.read(buf).map_err(|e| VfsError::Io(e.to_string()))
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}
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fn write(&mut self, buf: &[u8]) -> Result<usize, VfsError> {
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self.file
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.write(buf)
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.map_err(|e| VfsError::Io(e.to_string()))
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}
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fn seek(&mut self, pos: SeekFrom) -> Result<u64, VfsError> {
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self.file.seek(pos).map_err(|e| VfsError::Io(e.to_string()))
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}
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fn flush(&mut self) -> Result<(), VfsError> {
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self.file.flush().map_err(|e| VfsError::Io(e.to_string()))
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}
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fn stat(&mut self) -> Result<VfsStat, VfsError> {
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let meta = self
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.file
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.metadata()
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.map_err(|e| VfsError::Io(e.to_string()))?;
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Ok(util::stat_from_metadata(&meta, false))
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}
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fn set_len(&mut self, size: u64) -> Result<(), VfsError> {
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self.file
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.set_len(size)
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.map_err(|e| VfsError::Io(e.to_string()))
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}
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}
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impl VfsBackend for LocalFs {
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fn clone_boxed(&self) -> Box<dyn VfsBackend> {
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Box::new(Self {})
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}
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fn read_dir(&self, path: &Path) -> Result<Vec<VfsDirEntry>, VfsError> {
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let dir = fs::read_dir(path).map_err(|e| util::map_io_error(path, e))?;
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let mut entries = Vec::new();
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for entry in dir {
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let entry = entry.map_err(|e| util::map_io_error(path, e))?;
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let name = entry.file_name().to_string_lossy().to_string();
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let file_type = entry.file_type().map_err(|e| util::map_io_error(path, e))?;
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let meta = entry.metadata().map_err(|e| util::map_io_error(path, e))?;
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let stat = util::stat_from_metadata(&meta, file_type.is_symlink());
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let long_name = util::build_long_name(&stat, &name);
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entries.push(VfsDirEntry {
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name,
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long_name,
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stat,
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});
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}
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entries.sort_by(|a, b| a.name.cmp(&b.name));
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Ok(entries)
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}
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fn open_file(&self, path: &Path, flags: &OpenFlags) -> Result<Box<dyn VfsFile>, VfsError> {
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let mut opts = OpenOptions::new();
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opts.read(flags.read);
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opts.write(flags.write);
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opts.append(flags.append);
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opts.create(flags.create);
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opts.truncate(flags.truncate);
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opts.create_new(flags.exclusive);
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let file = opts.open(path).map_err(|e| util::map_io_error(path, e))?;
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#[cfg(unix)]
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if flags.create && !flags.exclusive {
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if let Ok(meta) = file.metadata() {
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if flags.mode != 0 && meta.permissions().mode() != flags.mode {
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fs::set_permissions(path, std::fs::Permissions::from_mode(flags.mode)).ok();
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}
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}
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}
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Ok(Box::new(LocalFile { file }))
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}
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fn stat(&self, path: &Path) -> Result<VfsStat, VfsError> {
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let meta = fs::metadata(path).map_err(|e| util::map_io_error(path, e))?;
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Ok(util::stat_from_metadata(&meta, false))
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}
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fn lstat(&self, path: &Path) -> Result<VfsStat, VfsError> {
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let meta = fs::symlink_metadata(path).map_err(|e| util::map_io_error(path, e))?;
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let is_symlink = path.is_symlink() || meta.file_type().is_symlink();
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Ok(util::stat_from_metadata(&meta, is_symlink))
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}
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fn create_dir(&self, path: &Path, mode: u32) -> Result<(), VfsError> {
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fs::create_dir(path).map_err(|e| util::map_io_error(path, e))?;
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#[cfg(unix)]
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{
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fs::set_permissions(path, std::fs::Permissions::from_mode(mode))
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.map_err(|e| util::map_io_error(path, e))?;
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}
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Ok(())
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}
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fn create_dir_all(&self, path: &Path, mode: u32) -> Result<(), VfsError> {
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fs::create_dir_all(path).map_err(|e| util::map_io_error(path, e))?;
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#[cfg(unix)]
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{
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if mode != 0 {
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fs::set_permissions(path, std::fs::Permissions::from_mode(mode))
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.map_err(|e| util::map_io_error(path, e))?;
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}
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}
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Ok(())
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}
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fn remove_dir(&self, path: &Path) -> Result<(), VfsError> {
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fs::remove_dir(path).map_err(|e| util::map_io_error(path, e))
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}
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fn remove_file(&self, path: &Path) -> Result<(), VfsError> {
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fs::remove_file(path).map_err(|e| util::map_io_error(path, e))
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}
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fn rename(&self, from: &Path, to: &Path) -> Result<(), VfsError> {
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fs::rename(from, to).map_err(|e| util::map_io_error(from, e))
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}
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fn set_stat(&self, path: &Path, stat: &VfsStat) -> Result<(), VfsError> {
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#[cfg(unix)]
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{
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if stat.mode != 0 {
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fs::set_permissions(path, std::fs::Permissions::from_mode(stat.mode))
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.map_err(|e| util::map_io_error(path, e))?;
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}
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}
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if let (Some(atime), Some(mtime)) = (
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stat.atime.duration_since(std::time::UNIX_EPOCH).ok(),
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stat.mtime.duration_since(std::time::UNIX_EPOCH).ok(),
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) {
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filetime::set_file_times(
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path,
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filetime::FileTime::from_unix_time(atime.as_secs() as i64, 0),
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filetime::FileTime::from_unix_time(mtime.as_secs() as i64, 0),
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)
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.map_err(|e| util::map_io_error(path, e))?;
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}
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Ok(())
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}
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fn read_link(&self, path: &Path) -> Result<PathBuf, VfsError> {
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let target = fs::read_link(path).map_err(|e| util::map_io_error(path, e))?;
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Ok(target)
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}
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fn create_symlink(&self, target: &Path, link: &Path) -> Result<(), VfsError> {
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#[cfg(unix)]
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{
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std::os::unix::fs::symlink(target, link).map_err(|e| util::map_io_error(link, e))?;
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}
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#[cfg(not(unix))]
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{
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std::os::windows::fs::symlink_file(target, link)
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.map_err(|e| util::map_io_error(link, e))?;
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}
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Ok(())
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}
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fn real_path(&self, path: &Path) -> Result<PathBuf, VfsError> {
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let canonical = path
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.canonicalize()
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.map_err(|e| util::map_io_error(path, e))?;
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Ok(canonical)
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}
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fn exists(&self, path: &Path) -> bool {
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path.exists()
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}
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fn hard_link(&self, original: &Path, link: &Path) -> Result<(), VfsError> {
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#[cfg(unix)]
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{
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fs::hard_link(original, link).map_err(|e| util::map_io_error(original, e))?;
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}
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#[cfg(not(unix))]
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{
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return Err(VfsError::Unsupported(
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"hard_link not supported on non-Unix systems".to_string(),
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));
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}
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Ok(())
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}
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}
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