1#[cfg(target_os = "macos")]
2mod mac_watcher;
3
4#[cfg(not(target_os = "macos"))]
5pub mod fs_watcher;
6
7use anyhow::{Context as _, Result, anyhow};
8#[cfg(any(target_os = "linux", target_os = "freebsd"))]
9use ashpd::desktop::trash;
10use futures::stream::iter;
11use gpui::App;
12use gpui::BackgroundExecutor;
13use gpui::Global;
14use gpui::ReadGlobal as _;
15use std::borrow::Cow;
16use util::command::new_smol_command;
17
18#[cfg(unix)]
19use std::os::fd::{AsFd, AsRawFd};
20
21#[cfg(unix)]
22use std::os::unix::fs::{FileTypeExt, MetadataExt};
23
24#[cfg(any(target_os = "macos", target_os = "freebsd"))]
25use std::mem::MaybeUninit;
26
27use async_tar::Archive;
28use futures::{AsyncRead, Stream, StreamExt, future::BoxFuture};
29use git::repository::{GitRepository, RealGitRepository};
30use rope::Rope;
31use serde::{Deserialize, Serialize};
32use smol::io::AsyncWriteExt;
33use std::{
34 io::{self, Write},
35 path::{Component, Path, PathBuf},
36 pin::Pin,
37 sync::Arc,
38 time::{Duration, SystemTime, UNIX_EPOCH},
39};
40use tempfile::TempDir;
41use text::LineEnding;
42
43#[cfg(any(test, feature = "test-support"))]
44mod fake_git_repo;
45#[cfg(any(test, feature = "test-support"))]
46use collections::{BTreeMap, btree_map};
47#[cfg(any(test, feature = "test-support"))]
48use fake_git_repo::FakeGitRepositoryState;
49#[cfg(any(test, feature = "test-support"))]
50use git::{
51 repository::{RepoPath, repo_path},
52 status::{FileStatus, StatusCode, TrackedStatus, UnmergedStatus},
53};
54#[cfg(any(test, feature = "test-support"))]
55use parking_lot::Mutex;
56#[cfg(any(test, feature = "test-support"))]
57use smol::io::AsyncReadExt;
58#[cfg(any(test, feature = "test-support"))]
59use std::ffi::OsStr;
60
61#[cfg(any(test, feature = "test-support"))]
62pub use fake_git_repo::{LOAD_HEAD_TEXT_TASK, LOAD_INDEX_TEXT_TASK};
63
64pub trait Watcher: Send + Sync {
65 fn add(&self, path: &Path) -> Result<()>;
66 fn remove(&self, path: &Path) -> Result<()>;
67}
68
69#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
70pub enum PathEventKind {
71 Removed,
72 Created,
73 Changed,
74}
75
76#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
77pub struct PathEvent {
78 pub path: PathBuf,
79 pub kind: Option<PathEventKind>,
80}
81
82impl From<PathEvent> for PathBuf {
83 fn from(event: PathEvent) -> Self {
84 event.path
85 }
86}
87
88#[async_trait::async_trait]
89pub trait Fs: Send + Sync {
90 async fn create_dir(&self, path: &Path) -> Result<()>;
91 async fn create_symlink(&self, path: &Path, target: PathBuf) -> Result<()>;
92 async fn create_file(&self, path: &Path, options: CreateOptions) -> Result<()>;
93 async fn create_file_with(
94 &self,
95 path: &Path,
96 content: Pin<&mut (dyn AsyncRead + Send)>,
97 ) -> Result<()>;
98 async fn extract_tar_file(
99 &self,
100 path: &Path,
101 content: Archive<Pin<&mut (dyn AsyncRead + Send)>>,
102 ) -> Result<()>;
103 async fn copy_file(&self, source: &Path, target: &Path, options: CopyOptions) -> Result<()>;
104 async fn rename(&self, source: &Path, target: &Path, options: RenameOptions) -> Result<()>;
105 async fn remove_dir(&self, path: &Path, options: RemoveOptions) -> Result<()>;
106 async fn trash_dir(&self, path: &Path, options: RemoveOptions) -> Result<()> {
107 self.remove_dir(path, options).await
108 }
109 async fn remove_file(&self, path: &Path, options: RemoveOptions) -> Result<()>;
110 async fn trash_file(&self, path: &Path, options: RemoveOptions) -> Result<()> {
111 self.remove_file(path, options).await
112 }
113 async fn open_handle(&self, path: &Path) -> Result<Arc<dyn FileHandle>>;
114 async fn open_sync(&self, path: &Path) -> Result<Box<dyn io::Read + Send + Sync>>;
115 async fn load(&self, path: &Path) -> Result<String> {
116 Ok(String::from_utf8(self.load_bytes(path).await?)?)
117 }
118 async fn load_bytes(&self, path: &Path) -> Result<Vec<u8>>;
119 async fn atomic_write(&self, path: PathBuf, text: String) -> Result<()>;
120 async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()>;
121 async fn write(&self, path: &Path, content: &[u8]) -> Result<()>;
122 async fn canonicalize(&self, path: &Path) -> Result<PathBuf>;
123 async fn is_file(&self, path: &Path) -> bool;
124 async fn is_dir(&self, path: &Path) -> bool;
125 async fn metadata(&self, path: &Path) -> Result<Option<Metadata>>;
126 async fn read_link(&self, path: &Path) -> Result<PathBuf>;
127 async fn read_dir(
128 &self,
129 path: &Path,
130 ) -> Result<Pin<Box<dyn Send + Stream<Item = Result<PathBuf>>>>>;
131
132 async fn watch(
133 &self,
134 path: &Path,
135 latency: Duration,
136 ) -> (
137 Pin<Box<dyn Send + Stream<Item = Vec<PathEvent>>>>,
138 Arc<dyn Watcher>,
139 );
140
141 fn open_repo(
142 &self,
143 abs_dot_git: &Path,
144 system_git_binary_path: Option<&Path>,
145 ) -> Option<Arc<dyn GitRepository>>;
146 async fn git_init(&self, abs_work_directory: &Path, fallback_branch_name: String)
147 -> Result<()>;
148 async fn git_clone(&self, repo_url: &str, abs_work_directory: &Path) -> Result<()>;
149 fn is_fake(&self) -> bool;
150 async fn is_case_sensitive(&self) -> Result<bool>;
151
152 #[cfg(any(test, feature = "test-support"))]
153 fn as_fake(&self) -> Arc<FakeFs> {
154 panic!("called as_fake on a real fs");
155 }
156}
157
158struct GlobalFs(Arc<dyn Fs>);
159
160impl Global for GlobalFs {}
161
162impl dyn Fs {
163 /// Returns the global [`Fs`].
164 pub fn global(cx: &App) -> Arc<Self> {
165 GlobalFs::global(cx).0.clone()
166 }
167
168 /// Sets the global [`Fs`].
169 pub fn set_global(fs: Arc<Self>, cx: &mut App) {
170 cx.set_global(GlobalFs(fs));
171 }
172}
173
174#[derive(Copy, Clone, Default)]
175pub struct CreateOptions {
176 pub overwrite: bool,
177 pub ignore_if_exists: bool,
178}
179
180#[derive(Copy, Clone, Default)]
181pub struct CopyOptions {
182 pub overwrite: bool,
183 pub ignore_if_exists: bool,
184}
185
186#[derive(Copy, Clone, Default)]
187pub struct RenameOptions {
188 pub overwrite: bool,
189 pub ignore_if_exists: bool,
190}
191
192#[derive(Copy, Clone, Default)]
193pub struct RemoveOptions {
194 pub recursive: bool,
195 pub ignore_if_not_exists: bool,
196}
197
198#[derive(Copy, Clone, Debug)]
199pub struct Metadata {
200 pub inode: u64,
201 pub mtime: MTime,
202 pub is_symlink: bool,
203 pub is_dir: bool,
204 pub len: u64,
205 pub is_fifo: bool,
206}
207
208/// Filesystem modification time. The purpose of this newtype is to discourage use of operations
209/// that do not make sense for mtimes. In particular, it is not always valid to compare mtimes using
210/// `<` or `>`, as there are many things that can cause the mtime of a file to be earlier than it
211/// was. See ["mtime comparison considered harmful" - apenwarr](https://apenwarr.ca/log/20181113).
212///
213/// Do not derive Ord, PartialOrd, or arithmetic operation traits.
214#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Deserialize, Serialize)]
215#[serde(transparent)]
216pub struct MTime(SystemTime);
217
218impl MTime {
219 /// Conversion intended for persistence and testing.
220 pub fn from_seconds_and_nanos(secs: u64, nanos: u32) -> Self {
221 MTime(UNIX_EPOCH + Duration::new(secs, nanos))
222 }
223
224 /// Conversion intended for persistence.
225 pub fn to_seconds_and_nanos_for_persistence(self) -> Option<(u64, u32)> {
226 self.0
227 .duration_since(UNIX_EPOCH)
228 .ok()
229 .map(|duration| (duration.as_secs(), duration.subsec_nanos()))
230 }
231
232 /// Returns the value wrapped by this `MTime`, for presentation to the user. The name including
233 /// "_for_user" is to discourage misuse - this method should not be used when making decisions
234 /// about file dirtiness.
235 pub fn timestamp_for_user(self) -> SystemTime {
236 self.0
237 }
238
239 /// Temporary method to split out the behavior changes from introduction of this newtype.
240 pub fn bad_is_greater_than(self, other: MTime) -> bool {
241 self.0 > other.0
242 }
243}
244
245impl From<proto::Timestamp> for MTime {
246 fn from(timestamp: proto::Timestamp) -> Self {
247 MTime(timestamp.into())
248 }
249}
250
251impl From<MTime> for proto::Timestamp {
252 fn from(mtime: MTime) -> Self {
253 mtime.0.into()
254 }
255}
256
257pub struct RealFs {
258 bundled_git_binary_path: Option<PathBuf>,
259 executor: BackgroundExecutor,
260}
261
262pub trait FileHandle: Send + Sync + std::fmt::Debug {
263 fn current_path(&self, fs: &Arc<dyn Fs>) -> Result<PathBuf>;
264}
265
266impl FileHandle for std::fs::File {
267 #[cfg(target_os = "macos")]
268 fn current_path(&self, _: &Arc<dyn Fs>) -> Result<PathBuf> {
269 use std::{
270 ffi::{CStr, OsStr},
271 os::unix::ffi::OsStrExt,
272 };
273
274 let fd = self.as_fd();
275 let mut path_buf = MaybeUninit::<[u8; libc::PATH_MAX as usize]>::uninit();
276
277 let result = unsafe { libc::fcntl(fd.as_raw_fd(), libc::F_GETPATH, path_buf.as_mut_ptr()) };
278 if result == -1 {
279 anyhow::bail!("fcntl returned -1".to_string());
280 }
281
282 // SAFETY: `fcntl` will initialize the path buffer.
283 let c_str = unsafe { CStr::from_ptr(path_buf.as_ptr().cast()) };
284 let path = PathBuf::from(OsStr::from_bytes(c_str.to_bytes()));
285 Ok(path)
286 }
287
288 #[cfg(target_os = "linux")]
289 fn current_path(&self, _: &Arc<dyn Fs>) -> Result<PathBuf> {
290 let fd = self.as_fd();
291 let fd_path = format!("/proc/self/fd/{}", fd.as_raw_fd());
292 let new_path = std::fs::read_link(fd_path)?;
293 if new_path
294 .file_name()
295 .is_some_and(|f| f.to_string_lossy().ends_with(" (deleted)"))
296 {
297 anyhow::bail!("file was deleted")
298 };
299
300 Ok(new_path)
301 }
302
303 #[cfg(target_os = "freebsd")]
304 fn current_path(&self, _: &Arc<dyn Fs>) -> Result<PathBuf> {
305 use std::{
306 ffi::{CStr, OsStr},
307 os::unix::ffi::OsStrExt,
308 };
309
310 let fd = self.as_fd();
311 let mut kif = MaybeUninit::<libc::kinfo_file>::uninit();
312 kif.kf_structsize = libc::KINFO_FILE_SIZE;
313
314 let result = unsafe { libc::fcntl(fd.as_raw_fd(), libc::F_KINFO, kif.as_mut_ptr()) };
315 if result == -1 {
316 anyhow::bail!("fcntl returned -1".to_string());
317 }
318
319 // SAFETY: `fcntl` will initialize the kif.
320 let c_str = unsafe { CStr::from_ptr(kif.assume_init().kf_path.as_ptr()) };
321 let path = PathBuf::from(OsStr::from_bytes(c_str.to_bytes()));
322 Ok(path)
323 }
324
325 #[cfg(target_os = "windows")]
326 fn current_path(&self, _: &Arc<dyn Fs>) -> Result<PathBuf> {
327 use std::ffi::OsString;
328 use std::os::windows::ffi::OsStringExt;
329 use std::os::windows::io::AsRawHandle;
330
331 use windows::Win32::Foundation::HANDLE;
332 use windows::Win32::Storage::FileSystem::{
333 FILE_NAME_NORMALIZED, GetFinalPathNameByHandleW,
334 };
335
336 let handle = HANDLE(self.as_raw_handle() as _);
337
338 // Query required buffer size (in wide chars)
339 let required_len =
340 unsafe { GetFinalPathNameByHandleW(handle, &mut [], FILE_NAME_NORMALIZED) };
341 if required_len == 0 {
342 anyhow::bail!("GetFinalPathNameByHandleW returned 0 length");
343 }
344
345 // Allocate buffer and retrieve the path
346 let mut buf: Vec<u16> = vec![0u16; required_len as usize + 1];
347 let written = unsafe { GetFinalPathNameByHandleW(handle, &mut buf, FILE_NAME_NORMALIZED) };
348 if written == 0 {
349 anyhow::bail!("GetFinalPathNameByHandleW failed to write path");
350 }
351
352 let os_str: OsString = OsString::from_wide(&buf[..written as usize]);
353 Ok(PathBuf::from(os_str))
354 }
355}
356
357pub struct RealWatcher {}
358
359impl RealFs {
360 pub fn new(git_binary_path: Option<PathBuf>, executor: BackgroundExecutor) -> Self {
361 Self {
362 bundled_git_binary_path: git_binary_path,
363 executor,
364 }
365 }
366}
367
368#[async_trait::async_trait]
369impl Fs for RealFs {
370 async fn create_dir(&self, path: &Path) -> Result<()> {
371 Ok(smol::fs::create_dir_all(path).await?)
372 }
373
374 async fn create_symlink(&self, path: &Path, target: PathBuf) -> Result<()> {
375 #[cfg(unix)]
376 smol::fs::unix::symlink(target, path).await?;
377
378 #[cfg(windows)]
379 if smol::fs::metadata(&target).await?.is_dir() {
380 let status = new_smol_command("cmd")
381 .args(["/C", "mklink", "/J"])
382 .args([path, target.as_path()])
383 .status()
384 .await?;
385
386 if !status.success() {
387 return Err(anyhow::anyhow!(
388 "Failed to create junction from {:?} to {:?}",
389 path,
390 target
391 ));
392 }
393 } else {
394 smol::fs::windows::symlink_file(target, path).await?
395 }
396
397 Ok(())
398 }
399
400 async fn create_file(&self, path: &Path, options: CreateOptions) -> Result<()> {
401 let mut open_options = smol::fs::OpenOptions::new();
402 open_options.write(true).create(true);
403 if options.overwrite {
404 open_options.truncate(true);
405 } else if !options.ignore_if_exists {
406 open_options.create_new(true);
407 }
408 open_options.open(path).await?;
409 Ok(())
410 }
411
412 async fn create_file_with(
413 &self,
414 path: &Path,
415 content: Pin<&mut (dyn AsyncRead + Send)>,
416 ) -> Result<()> {
417 let mut file = smol::fs::File::create(&path).await?;
418 futures::io::copy(content, &mut file).await?;
419 Ok(())
420 }
421
422 async fn extract_tar_file(
423 &self,
424 path: &Path,
425 content: Archive<Pin<&mut (dyn AsyncRead + Send)>>,
426 ) -> Result<()> {
427 content.unpack(path).await?;
428 Ok(())
429 }
430
431 async fn copy_file(&self, source: &Path, target: &Path, options: CopyOptions) -> Result<()> {
432 if !options.overwrite && smol::fs::metadata(target).await.is_ok() {
433 if options.ignore_if_exists {
434 return Ok(());
435 } else {
436 anyhow::bail!("{target:?} already exists");
437 }
438 }
439
440 smol::fs::copy(source, target).await?;
441 Ok(())
442 }
443
444 async fn rename(&self, source: &Path, target: &Path, options: RenameOptions) -> Result<()> {
445 if !options.overwrite && smol::fs::metadata(target).await.is_ok() {
446 if options.ignore_if_exists {
447 return Ok(());
448 } else {
449 anyhow::bail!("{target:?} already exists");
450 }
451 }
452
453 smol::fs::rename(source, target).await?;
454 Ok(())
455 }
456
457 async fn remove_dir(&self, path: &Path, options: RemoveOptions) -> Result<()> {
458 let result = if options.recursive {
459 smol::fs::remove_dir_all(path).await
460 } else {
461 smol::fs::remove_dir(path).await
462 };
463 match result {
464 Ok(()) => Ok(()),
465 Err(err) if err.kind() == io::ErrorKind::NotFound && options.ignore_if_not_exists => {
466 Ok(())
467 }
468 Err(err) => Err(err)?,
469 }
470 }
471
472 async fn remove_file(&self, path: &Path, options: RemoveOptions) -> Result<()> {
473 #[cfg(windows)]
474 if let Ok(Some(metadata)) = self.metadata(path).await
475 && metadata.is_symlink
476 && metadata.is_dir
477 {
478 self.remove_dir(
479 path,
480 RemoveOptions {
481 recursive: false,
482 ignore_if_not_exists: true,
483 },
484 )
485 .await?;
486 return Ok(());
487 }
488
489 match smol::fs::remove_file(path).await {
490 Ok(()) => Ok(()),
491 Err(err) if err.kind() == io::ErrorKind::NotFound && options.ignore_if_not_exists => {
492 Ok(())
493 }
494 Err(err) => Err(err)?,
495 }
496 }
497
498 #[cfg(target_os = "macos")]
499 async fn trash_file(&self, path: &Path, _options: RemoveOptions) -> Result<()> {
500 use cocoa::{
501 base::{id, nil},
502 foundation::{NSAutoreleasePool, NSString},
503 };
504 use objc::{class, msg_send, sel, sel_impl};
505
506 unsafe {
507 unsafe fn ns_string(string: &str) -> id {
508 unsafe { NSString::alloc(nil).init_str(string).autorelease() }
509 }
510
511 let url: id = msg_send![class!(NSURL), fileURLWithPath: ns_string(path.to_string_lossy().as_ref())];
512 let array: id = msg_send![class!(NSArray), arrayWithObject: url];
513 let workspace: id = msg_send![class!(NSWorkspace), sharedWorkspace];
514
515 let _: id = msg_send![workspace, recycleURLs: array completionHandler: nil];
516 }
517 Ok(())
518 }
519
520 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
521 async fn trash_file(&self, path: &Path, _options: RemoveOptions) -> Result<()> {
522 if let Ok(Some(metadata)) = self.metadata(path).await
523 && metadata.is_symlink
524 {
525 // TODO: trash_file does not support trashing symlinks yet - https://github.com/bilelmoussaoui/ashpd/issues/255
526 return self.remove_file(path, RemoveOptions::default()).await;
527 }
528 let file = smol::fs::File::open(path).await?;
529 match trash::trash_file(&file.as_fd()).await {
530 Ok(_) => Ok(()),
531 Err(err) => {
532 log::error!("Failed to trash file: {}", err);
533 // Trashing files can fail if you don't have a trashing dbus service configured.
534 // In that case, delete the file directly instead.
535 return self.remove_file(path, RemoveOptions::default()).await;
536 }
537 }
538 }
539
540 #[cfg(target_os = "windows")]
541 async fn trash_file(&self, path: &Path, _options: RemoveOptions) -> Result<()> {
542 use util::paths::SanitizedPath;
543 use windows::{
544 Storage::{StorageDeleteOption, StorageFile},
545 core::HSTRING,
546 };
547 // todo(windows)
548 // When new version of `windows-rs` release, make this operation `async`
549 let path = path.canonicalize()?;
550 let path = SanitizedPath::new(&path);
551 let path_string = path.to_string();
552 let file = StorageFile::GetFileFromPathAsync(&HSTRING::from(path_string))?.get()?;
553 file.DeleteAsync(StorageDeleteOption::Default)?.get()?;
554 Ok(())
555 }
556
557 #[cfg(target_os = "macos")]
558 async fn trash_dir(&self, path: &Path, options: RemoveOptions) -> Result<()> {
559 self.trash_file(path, options).await
560 }
561
562 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
563 async fn trash_dir(&self, path: &Path, options: RemoveOptions) -> Result<()> {
564 self.trash_file(path, options).await
565 }
566
567 #[cfg(target_os = "windows")]
568 async fn trash_dir(&self, path: &Path, _options: RemoveOptions) -> Result<()> {
569 use util::paths::SanitizedPath;
570 use windows::{
571 Storage::{StorageDeleteOption, StorageFolder},
572 core::HSTRING,
573 };
574
575 // todo(windows)
576 // When new version of `windows-rs` release, make this operation `async`
577 let path = path.canonicalize()?;
578 let path = SanitizedPath::new(&path);
579 let path_string = path.to_string();
580 let folder = StorageFolder::GetFolderFromPathAsync(&HSTRING::from(path_string))?.get()?;
581 folder.DeleteAsync(StorageDeleteOption::Default)?.get()?;
582 Ok(())
583 }
584
585 async fn open_sync(&self, path: &Path) -> Result<Box<dyn io::Read + Send + Sync>> {
586 Ok(Box::new(std::fs::File::open(path)?))
587 }
588
589 async fn open_handle(&self, path: &Path) -> Result<Arc<dyn FileHandle>> {
590 let mut options = std::fs::OpenOptions::new();
591 options.read(true);
592 #[cfg(windows)]
593 {
594 use std::os::windows::fs::OpenOptionsExt;
595 options.custom_flags(windows::Win32::Storage::FileSystem::FILE_FLAG_BACKUP_SEMANTICS.0);
596 }
597 Ok(Arc::new(options.open(path)?))
598 }
599
600 async fn load(&self, path: &Path) -> Result<String> {
601 let path = path.to_path_buf();
602 self.executor
603 .spawn(async move { Ok(std::fs::read_to_string(path)?) })
604 .await
605 }
606
607 async fn load_bytes(&self, path: &Path) -> Result<Vec<u8>> {
608 let path = path.to_path_buf();
609 let bytes = self
610 .executor
611 .spawn(async move { std::fs::read(path) })
612 .await?;
613 Ok(bytes)
614 }
615
616 #[cfg(not(target_os = "windows"))]
617 async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
618 smol::unblock(move || {
619 // Use the directory of the destination as temp dir to avoid
620 // invalid cross-device link error, and XDG_CACHE_DIR for fallback.
621 // See https://github.com/zed-industries/zed/pull/8437 for more details.
622 let mut tmp_file =
623 tempfile::NamedTempFile::new_in(path.parent().unwrap_or(paths::temp_dir()))?;
624 tmp_file.write_all(data.as_bytes())?;
625 tmp_file.persist(path)?;
626 anyhow::Ok(())
627 })
628 .await?;
629
630 Ok(())
631 }
632
633 #[cfg(target_os = "windows")]
634 async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
635 smol::unblock(move || {
636 // If temp dir is set to a different drive than the destination,
637 // we receive error:
638 //
639 // failed to persist temporary file:
640 // The system cannot move the file to a different disk drive. (os error 17)
641 //
642 // This is because `ReplaceFileW` does not support cross volume moves.
643 // See the remark section: "The backup file, replaced file, and replacement file must all reside on the same volume."
644 // https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-replacefilew#remarks
645 //
646 // So we use the directory of the destination as a temp dir to avoid it.
647 // https://github.com/zed-industries/zed/issues/16571
648 let temp_dir = TempDir::new_in(path.parent().unwrap_or(paths::temp_dir()))?;
649 let temp_file = {
650 let temp_file_path = temp_dir.path().join("temp_file");
651 let mut file = std::fs::File::create_new(&temp_file_path)?;
652 file.write_all(data.as_bytes())?;
653 temp_file_path
654 };
655 atomic_replace(path.as_path(), temp_file.as_path())?;
656 anyhow::Ok(())
657 })
658 .await?;
659 Ok(())
660 }
661
662 async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()> {
663 let buffer_size = text.summary().len.min(10 * 1024);
664 if let Some(path) = path.parent() {
665 self.create_dir(path).await?;
666 }
667 let file = smol::fs::File::create(path).await?;
668 let mut writer = smol::io::BufWriter::with_capacity(buffer_size, file);
669 for chunk in chunks(text, line_ending) {
670 writer.write_all(chunk.as_bytes()).await?;
671 }
672 writer.flush().await?;
673 Ok(())
674 }
675
676 async fn write(&self, path: &Path, content: &[u8]) -> Result<()> {
677 if let Some(path) = path.parent() {
678 self.create_dir(path).await?;
679 }
680 let path = path.to_owned();
681 let contents = content.to_owned();
682 self.executor
683 .spawn(async move {
684 std::fs::write(path, contents)?;
685 Ok(())
686 })
687 .await
688 }
689
690 async fn canonicalize(&self, path: &Path) -> Result<PathBuf> {
691 let path = path.to_owned();
692 self.executor
693 .spawn(async move {
694 std::fs::canonicalize(&path).with_context(|| format!("canonicalizing {path:?}"))
695 })
696 .await
697 }
698
699 async fn is_file(&self, path: &Path) -> bool {
700 let path = path.to_owned();
701 self.executor
702 .spawn(async move { std::fs::metadata(path).is_ok_and(|metadata| metadata.is_file()) })
703 .await
704 }
705
706 async fn is_dir(&self, path: &Path) -> bool {
707 let path = path.to_owned();
708 self.executor
709 .spawn(async move { std::fs::metadata(path).is_ok_and(|metadata| metadata.is_dir()) })
710 .await
711 }
712
713 async fn metadata(&self, path: &Path) -> Result<Option<Metadata>> {
714 let path_buf = path.to_owned();
715 let symlink_metadata = match self
716 .executor
717 .spawn(async move { std::fs::symlink_metadata(&path_buf) })
718 .await
719 {
720 Ok(metadata) => metadata,
721 Err(err) => {
722 return match (err.kind(), err.raw_os_error()) {
723 (io::ErrorKind::NotFound, _) => Ok(None),
724 (io::ErrorKind::Other, Some(libc::ENOTDIR)) => Ok(None),
725 _ => Err(anyhow::Error::new(err)),
726 };
727 }
728 };
729
730 let is_symlink = symlink_metadata.file_type().is_symlink();
731 let metadata = if is_symlink {
732 let path_buf = path.to_path_buf();
733 let path_exists = self
734 .executor
735 .spawn(async move {
736 path_buf
737 .try_exists()
738 .with_context(|| format!("checking existence for path {path_buf:?}"))
739 })
740 .await?;
741 if path_exists {
742 let path_buf = path.to_path_buf();
743 self.executor
744 .spawn(async move { std::fs::metadata(path_buf) })
745 .await
746 .with_context(|| "accessing symlink for path {path}")?
747 } else {
748 symlink_metadata
749 }
750 } else {
751 symlink_metadata
752 };
753
754 #[cfg(unix)]
755 let inode = metadata.ino();
756
757 #[cfg(windows)]
758 let inode = file_id(path).await?;
759
760 #[cfg(windows)]
761 let is_fifo = false;
762
763 #[cfg(unix)]
764 let is_fifo = metadata.file_type().is_fifo();
765
766 Ok(Some(Metadata {
767 inode,
768 mtime: MTime(metadata.modified().unwrap_or(SystemTime::UNIX_EPOCH)),
769 len: metadata.len(),
770 is_symlink,
771 is_dir: metadata.file_type().is_dir(),
772 is_fifo,
773 }))
774 }
775
776 async fn read_link(&self, path: &Path) -> Result<PathBuf> {
777 let path = path.to_owned();
778 let path = self
779 .executor
780 .spawn(async move { std::fs::read_link(&path) })
781 .await?;
782 Ok(path)
783 }
784
785 async fn read_dir(
786 &self,
787 path: &Path,
788 ) -> Result<Pin<Box<dyn Send + Stream<Item = Result<PathBuf>>>>> {
789 let path = path.to_owned();
790 let result = iter(
791 self.executor
792 .spawn(async move { std::fs::read_dir(path) })
793 .await?,
794 )
795 .map(|entry| match entry {
796 Ok(entry) => Ok(entry.path()),
797 Err(error) => Err(anyhow!("failed to read dir entry {error:?}")),
798 });
799 Ok(Box::pin(result))
800 }
801
802 #[cfg(target_os = "macos")]
803 async fn watch(
804 &self,
805 path: &Path,
806 latency: Duration,
807 ) -> (
808 Pin<Box<dyn Send + Stream<Item = Vec<PathEvent>>>>,
809 Arc<dyn Watcher>,
810 ) {
811 use fsevent::StreamFlags;
812
813 let (events_tx, events_rx) = smol::channel::unbounded();
814 let handles = Arc::new(parking_lot::Mutex::new(collections::BTreeMap::default()));
815 let watcher = Arc::new(mac_watcher::MacWatcher::new(
816 events_tx,
817 Arc::downgrade(&handles),
818 latency,
819 ));
820 watcher.add(path).expect("handles can't be dropped");
821
822 (
823 Box::pin(
824 events_rx
825 .map(|events| {
826 events
827 .into_iter()
828 .map(|event| {
829 log::trace!("fs path event: {event:?}");
830 let kind = if event.flags.contains(StreamFlags::ITEM_REMOVED) {
831 Some(PathEventKind::Removed)
832 } else if event.flags.contains(StreamFlags::ITEM_CREATED) {
833 Some(PathEventKind::Created)
834 } else if event.flags.contains(StreamFlags::ITEM_MODIFIED)
835 | event.flags.contains(StreamFlags::ITEM_RENAMED)
836 {
837 Some(PathEventKind::Changed)
838 } else {
839 None
840 };
841 PathEvent {
842 path: event.path,
843 kind,
844 }
845 })
846 .collect()
847 })
848 .chain(futures::stream::once(async move {
849 drop(handles);
850 vec![]
851 })),
852 ),
853 watcher,
854 )
855 }
856
857 #[cfg(not(target_os = "macos"))]
858 async fn watch(
859 &self,
860 path: &Path,
861 latency: Duration,
862 ) -> (
863 Pin<Box<dyn Send + Stream<Item = Vec<PathEvent>>>>,
864 Arc<dyn Watcher>,
865 ) {
866 use parking_lot::Mutex;
867 use util::{ResultExt as _, paths::SanitizedPath};
868
869 let (tx, rx) = smol::channel::unbounded();
870 let pending_paths: Arc<Mutex<Vec<PathEvent>>> = Default::default();
871 let watcher = Arc::new(fs_watcher::FsWatcher::new(tx, pending_paths.clone()));
872
873 // If the path doesn't exist yet (e.g. settings.json), watch the parent dir to learn when it's created.
874 if let Err(e) = watcher.add(path)
875 && let Some(parent) = path.parent()
876 && let Err(parent_e) = watcher.add(parent)
877 {
878 log::warn!(
879 "Failed to watch {} and its parent directory {}:\n{e}\n{parent_e}",
880 path.display(),
881 parent.display()
882 );
883 }
884
885 // Check if path is a symlink and follow the target parent
886 if let Some(mut target) = self.read_link(path).await.ok() {
887 log::trace!("watch symlink {path:?} -> {target:?}");
888 // Check if symlink target is relative path, if so make it absolute
889 if target.is_relative()
890 && let Some(parent) = path.parent()
891 {
892 target = parent.join(target);
893 if let Ok(canonical) = self.canonicalize(&target).await {
894 target = SanitizedPath::new(&canonical).as_path().to_path_buf();
895 }
896 }
897 watcher.add(&target).ok();
898 if let Some(parent) = target.parent() {
899 watcher.add(parent).log_err();
900 }
901 }
902
903 (
904 Box::pin(rx.filter_map({
905 let watcher = watcher.clone();
906 move |_| {
907 let _ = watcher.clone();
908 let pending_paths = pending_paths.clone();
909 async move {
910 smol::Timer::after(latency).await;
911 let paths = std::mem::take(&mut *pending_paths.lock());
912 (!paths.is_empty()).then_some(paths)
913 }
914 }
915 })),
916 watcher,
917 )
918 }
919
920 fn open_repo(
921 &self,
922 dotgit_path: &Path,
923 system_git_binary_path: Option<&Path>,
924 ) -> Option<Arc<dyn GitRepository>> {
925 Some(Arc::new(RealGitRepository::new(
926 dotgit_path,
927 self.bundled_git_binary_path.clone(),
928 system_git_binary_path.map(|path| path.to_path_buf()),
929 self.executor.clone(),
930 )?))
931 }
932
933 async fn git_init(
934 &self,
935 abs_work_directory_path: &Path,
936 fallback_branch_name: String,
937 ) -> Result<()> {
938 let config = new_smol_command("git")
939 .current_dir(abs_work_directory_path)
940 .args(&["config", "--global", "--get", "init.defaultBranch"])
941 .output()
942 .await?;
943
944 let branch_name;
945
946 if config.status.success() && !config.stdout.is_empty() {
947 branch_name = String::from_utf8_lossy(&config.stdout);
948 } else {
949 branch_name = Cow::Borrowed(fallback_branch_name.as_str());
950 }
951
952 new_smol_command("git")
953 .current_dir(abs_work_directory_path)
954 .args(&["init", "-b"])
955 .arg(branch_name.trim())
956 .output()
957 .await?;
958
959 Ok(())
960 }
961
962 async fn git_clone(&self, repo_url: &str, abs_work_directory: &Path) -> Result<()> {
963 let output = new_smol_command("git")
964 .current_dir(abs_work_directory)
965 .args(&["clone", repo_url])
966 .output()
967 .await?;
968
969 if !output.status.success() {
970 anyhow::bail!(
971 "git clone failed: {}",
972 String::from_utf8_lossy(&output.stderr)
973 );
974 }
975
976 Ok(())
977 }
978
979 fn is_fake(&self) -> bool {
980 false
981 }
982
983 /// Checks whether the file system is case sensitive by attempting to create two files
984 /// that have the same name except for the casing.
985 ///
986 /// It creates both files in a temporary directory it removes at the end.
987 async fn is_case_sensitive(&self) -> Result<bool> {
988 let temp_dir = TempDir::new()?;
989 let test_file_1 = temp_dir.path().join("case_sensitivity_test.tmp");
990 let test_file_2 = temp_dir.path().join("CASE_SENSITIVITY_TEST.TMP");
991
992 let create_opts = CreateOptions {
993 overwrite: false,
994 ignore_if_exists: false,
995 };
996
997 // Create file1
998 self.create_file(&test_file_1, create_opts).await?;
999
1000 // Now check whether it's possible to create file2
1001 let case_sensitive = match self.create_file(&test_file_2, create_opts).await {
1002 Ok(_) => Ok(true),
1003 Err(e) => {
1004 if let Some(io_error) = e.downcast_ref::<io::Error>() {
1005 if io_error.kind() == io::ErrorKind::AlreadyExists {
1006 Ok(false)
1007 } else {
1008 Err(e)
1009 }
1010 } else {
1011 Err(e)
1012 }
1013 }
1014 };
1015
1016 temp_dir.close()?;
1017 case_sensitive
1018 }
1019}
1020
1021#[cfg(not(any(target_os = "linux", target_os = "freebsd")))]
1022impl Watcher for RealWatcher {
1023 fn add(&self, _: &Path) -> Result<()> {
1024 Ok(())
1025 }
1026
1027 fn remove(&self, _: &Path) -> Result<()> {
1028 Ok(())
1029 }
1030}
1031
1032#[cfg(any(test, feature = "test-support"))]
1033pub struct FakeFs {
1034 this: std::sync::Weak<Self>,
1035 // Use an unfair lock to ensure tests are deterministic.
1036 state: Arc<Mutex<FakeFsState>>,
1037 executor: gpui::BackgroundExecutor,
1038}
1039
1040#[cfg(any(test, feature = "test-support"))]
1041struct FakeFsState {
1042 root: FakeFsEntry,
1043 next_inode: u64,
1044 next_mtime: SystemTime,
1045 git_event_tx: smol::channel::Sender<PathBuf>,
1046 event_txs: Vec<(PathBuf, smol::channel::Sender<Vec<PathEvent>>)>,
1047 events_paused: bool,
1048 buffered_events: Vec<PathEvent>,
1049 metadata_call_count: usize,
1050 read_dir_call_count: usize,
1051 path_write_counts: std::collections::HashMap<PathBuf, usize>,
1052 moves: std::collections::HashMap<u64, PathBuf>,
1053}
1054
1055#[cfg(any(test, feature = "test-support"))]
1056#[derive(Clone, Debug)]
1057enum FakeFsEntry {
1058 File {
1059 inode: u64,
1060 mtime: MTime,
1061 len: u64,
1062 content: Vec<u8>,
1063 // The path to the repository state directory, if this is a gitfile.
1064 git_dir_path: Option<PathBuf>,
1065 },
1066 Dir {
1067 inode: u64,
1068 mtime: MTime,
1069 len: u64,
1070 entries: BTreeMap<String, FakeFsEntry>,
1071 git_repo_state: Option<Arc<Mutex<FakeGitRepositoryState>>>,
1072 },
1073 Symlink {
1074 target: PathBuf,
1075 },
1076}
1077
1078#[cfg(any(test, feature = "test-support"))]
1079impl PartialEq for FakeFsEntry {
1080 fn eq(&self, other: &Self) -> bool {
1081 match (self, other) {
1082 (
1083 Self::File {
1084 inode: l_inode,
1085 mtime: l_mtime,
1086 len: l_len,
1087 content: l_content,
1088 git_dir_path: l_git_dir_path,
1089 },
1090 Self::File {
1091 inode: r_inode,
1092 mtime: r_mtime,
1093 len: r_len,
1094 content: r_content,
1095 git_dir_path: r_git_dir_path,
1096 },
1097 ) => {
1098 l_inode == r_inode
1099 && l_mtime == r_mtime
1100 && l_len == r_len
1101 && l_content == r_content
1102 && l_git_dir_path == r_git_dir_path
1103 }
1104 (
1105 Self::Dir {
1106 inode: l_inode,
1107 mtime: l_mtime,
1108 len: l_len,
1109 entries: l_entries,
1110 git_repo_state: l_git_repo_state,
1111 },
1112 Self::Dir {
1113 inode: r_inode,
1114 mtime: r_mtime,
1115 len: r_len,
1116 entries: r_entries,
1117 git_repo_state: r_git_repo_state,
1118 },
1119 ) => {
1120 let same_repo_state = match (l_git_repo_state.as_ref(), r_git_repo_state.as_ref()) {
1121 (Some(l), Some(r)) => Arc::ptr_eq(l, r),
1122 (None, None) => true,
1123 _ => false,
1124 };
1125 l_inode == r_inode
1126 && l_mtime == r_mtime
1127 && l_len == r_len
1128 && l_entries == r_entries
1129 && same_repo_state
1130 }
1131 (Self::Symlink { target: l_target }, Self::Symlink { target: r_target }) => {
1132 l_target == r_target
1133 }
1134 _ => false,
1135 }
1136 }
1137}
1138
1139#[cfg(any(test, feature = "test-support"))]
1140impl FakeFsState {
1141 fn get_and_increment_mtime(&mut self) -> MTime {
1142 let mtime = self.next_mtime;
1143 self.next_mtime += FakeFs::SYSTEMTIME_INTERVAL;
1144 MTime(mtime)
1145 }
1146
1147 fn get_and_increment_inode(&mut self) -> u64 {
1148 let inode = self.next_inode;
1149 self.next_inode += 1;
1150 inode
1151 }
1152
1153 fn canonicalize(&self, target: &Path, follow_symlink: bool) -> Option<PathBuf> {
1154 let mut canonical_path = PathBuf::new();
1155 let mut path = target.to_path_buf();
1156 let mut entry_stack = Vec::new();
1157 'outer: loop {
1158 let mut path_components = path.components().peekable();
1159 let mut prefix = None;
1160 while let Some(component) = path_components.next() {
1161 match component {
1162 Component::Prefix(prefix_component) => prefix = Some(prefix_component),
1163 Component::RootDir => {
1164 entry_stack.clear();
1165 entry_stack.push(&self.root);
1166 canonical_path.clear();
1167 match prefix {
1168 Some(prefix_component) => {
1169 canonical_path = PathBuf::from(prefix_component.as_os_str());
1170 // Prefixes like `C:\\` are represented without their trailing slash, so we have to re-add it.
1171 canonical_path.push(std::path::MAIN_SEPARATOR_STR);
1172 }
1173 None => canonical_path = PathBuf::from(std::path::MAIN_SEPARATOR_STR),
1174 }
1175 }
1176 Component::CurDir => {}
1177 Component::ParentDir => {
1178 entry_stack.pop()?;
1179 canonical_path.pop();
1180 }
1181 Component::Normal(name) => {
1182 let current_entry = *entry_stack.last()?;
1183 if let FakeFsEntry::Dir { entries, .. } = current_entry {
1184 let entry = entries.get(name.to_str().unwrap())?;
1185 if (path_components.peek().is_some() || follow_symlink)
1186 && let FakeFsEntry::Symlink { target, .. } = entry
1187 {
1188 let mut target = target.clone();
1189 target.extend(path_components);
1190 path = target;
1191 continue 'outer;
1192 }
1193 entry_stack.push(entry);
1194 canonical_path = canonical_path.join(name);
1195 } else {
1196 return None;
1197 }
1198 }
1199 }
1200 }
1201 break;
1202 }
1203
1204 if entry_stack.is_empty() {
1205 None
1206 } else {
1207 Some(canonical_path)
1208 }
1209 }
1210
1211 fn try_entry(
1212 &mut self,
1213 target: &Path,
1214 follow_symlink: bool,
1215 ) -> Option<(&mut FakeFsEntry, PathBuf)> {
1216 let canonical_path = self.canonicalize(target, follow_symlink)?;
1217
1218 let mut components = canonical_path
1219 .components()
1220 .skip_while(|component| matches!(component, Component::Prefix(_)));
1221 let Some(Component::RootDir) = components.next() else {
1222 panic!(
1223 "the path {:?} was not canonicalized properly {:?}",
1224 target, canonical_path
1225 )
1226 };
1227
1228 let mut entry = &mut self.root;
1229 for component in components {
1230 match component {
1231 Component::Normal(name) => {
1232 if let FakeFsEntry::Dir { entries, .. } = entry {
1233 entry = entries.get_mut(name.to_str().unwrap())?;
1234 } else {
1235 return None;
1236 }
1237 }
1238 _ => {
1239 panic!(
1240 "the path {:?} was not canonicalized properly {:?}",
1241 target, canonical_path
1242 )
1243 }
1244 }
1245 }
1246
1247 Some((entry, canonical_path))
1248 }
1249
1250 fn entry(&mut self, target: &Path) -> Result<&mut FakeFsEntry> {
1251 Ok(self
1252 .try_entry(target, true)
1253 .ok_or_else(|| {
1254 anyhow!(io::Error::new(
1255 io::ErrorKind::NotFound,
1256 format!("not found: {target:?}")
1257 ))
1258 })?
1259 .0)
1260 }
1261
1262 fn write_path<Fn, T>(&mut self, path: &Path, callback: Fn) -> Result<T>
1263 where
1264 Fn: FnOnce(btree_map::Entry<String, FakeFsEntry>) -> Result<T>,
1265 {
1266 let path = normalize_path(path);
1267 let filename = path.file_name().context("cannot overwrite the root")?;
1268 let parent_path = path.parent().unwrap();
1269
1270 let parent = self.entry(parent_path)?;
1271 let new_entry = parent
1272 .dir_entries(parent_path)?
1273 .entry(filename.to_str().unwrap().into());
1274 callback(new_entry)
1275 }
1276
1277 fn emit_event<I, T>(&mut self, paths: I)
1278 where
1279 I: IntoIterator<Item = (T, Option<PathEventKind>)>,
1280 T: Into<PathBuf>,
1281 {
1282 self.buffered_events
1283 .extend(paths.into_iter().map(|(path, kind)| PathEvent {
1284 path: path.into(),
1285 kind,
1286 }));
1287
1288 if !self.events_paused {
1289 self.flush_events(self.buffered_events.len());
1290 }
1291 }
1292
1293 fn flush_events(&mut self, mut count: usize) {
1294 count = count.min(self.buffered_events.len());
1295 let events = self.buffered_events.drain(0..count).collect::<Vec<_>>();
1296 self.event_txs.retain(|(_, tx)| {
1297 let _ = tx.try_send(events.clone());
1298 !tx.is_closed()
1299 });
1300 }
1301}
1302
1303#[cfg(any(test, feature = "test-support"))]
1304pub static FS_DOT_GIT: std::sync::LazyLock<&'static OsStr> =
1305 std::sync::LazyLock::new(|| OsStr::new(".git"));
1306
1307#[cfg(any(test, feature = "test-support"))]
1308impl FakeFs {
1309 /// We need to use something large enough for Windows and Unix to consider this a new file.
1310 /// https://doc.rust-lang.org/nightly/std/time/struct.SystemTime.html#platform-specific-behavior
1311 const SYSTEMTIME_INTERVAL: Duration = Duration::from_nanos(100);
1312
1313 pub fn new(executor: gpui::BackgroundExecutor) -> Arc<Self> {
1314 let (tx, rx) = smol::channel::bounded::<PathBuf>(10);
1315
1316 let this = Arc::new_cyclic(|this| Self {
1317 this: this.clone(),
1318 executor: executor.clone(),
1319 state: Arc::new(Mutex::new(FakeFsState {
1320 root: FakeFsEntry::Dir {
1321 inode: 0,
1322 mtime: MTime(UNIX_EPOCH),
1323 len: 0,
1324 entries: Default::default(),
1325 git_repo_state: None,
1326 },
1327 git_event_tx: tx,
1328 next_mtime: UNIX_EPOCH + Self::SYSTEMTIME_INTERVAL,
1329 next_inode: 1,
1330 event_txs: Default::default(),
1331 buffered_events: Vec::new(),
1332 events_paused: false,
1333 read_dir_call_count: 0,
1334 metadata_call_count: 0,
1335 path_write_counts: Default::default(),
1336 moves: Default::default(),
1337 })),
1338 });
1339
1340 executor.spawn({
1341 let this = this.clone();
1342 async move {
1343 while let Ok(git_event) = rx.recv().await {
1344 if let Some(mut state) = this.state.try_lock() {
1345 state.emit_event([(git_event, Some(PathEventKind::Changed))]);
1346 } else {
1347 panic!("Failed to lock file system state, this execution would have caused a test hang");
1348 }
1349 }
1350 }
1351 }).detach();
1352
1353 this
1354 }
1355
1356 pub fn set_next_mtime(&self, next_mtime: SystemTime) {
1357 let mut state = self.state.lock();
1358 state.next_mtime = next_mtime;
1359 }
1360
1361 pub fn get_and_increment_mtime(&self) -> MTime {
1362 let mut state = self.state.lock();
1363 state.get_and_increment_mtime()
1364 }
1365
1366 pub async fn touch_path(&self, path: impl AsRef<Path>) {
1367 let mut state = self.state.lock();
1368 let path = path.as_ref();
1369 let new_mtime = state.get_and_increment_mtime();
1370 let new_inode = state.get_and_increment_inode();
1371 state
1372 .write_path(path, move |entry| {
1373 match entry {
1374 btree_map::Entry::Vacant(e) => {
1375 e.insert(FakeFsEntry::File {
1376 inode: new_inode,
1377 mtime: new_mtime,
1378 content: Vec::new(),
1379 len: 0,
1380 git_dir_path: None,
1381 });
1382 }
1383 btree_map::Entry::Occupied(mut e) => match &mut *e.get_mut() {
1384 FakeFsEntry::File { mtime, .. } => *mtime = new_mtime,
1385 FakeFsEntry::Dir { mtime, .. } => *mtime = new_mtime,
1386 FakeFsEntry::Symlink { .. } => {}
1387 },
1388 }
1389 Ok(())
1390 })
1391 .unwrap();
1392 state.emit_event([(path.to_path_buf(), Some(PathEventKind::Changed))]);
1393 }
1394
1395 pub async fn insert_file(&self, path: impl AsRef<Path>, content: Vec<u8>) {
1396 self.write_file_internal(path, content, true).unwrap()
1397 }
1398
1399 pub async fn insert_symlink(&self, path: impl AsRef<Path>, target: PathBuf) {
1400 let mut state = self.state.lock();
1401 let path = path.as_ref();
1402 let file = FakeFsEntry::Symlink { target };
1403 state
1404 .write_path(path.as_ref(), move |e| match e {
1405 btree_map::Entry::Vacant(e) => {
1406 e.insert(file);
1407 Ok(())
1408 }
1409 btree_map::Entry::Occupied(mut e) => {
1410 *e.get_mut() = file;
1411 Ok(())
1412 }
1413 })
1414 .unwrap();
1415 state.emit_event([(path, Some(PathEventKind::Created))]);
1416 }
1417
1418 fn write_file_internal(
1419 &self,
1420 path: impl AsRef<Path>,
1421 new_content: Vec<u8>,
1422 recreate_inode: bool,
1423 ) -> Result<()> {
1424 let mut state = self.state.lock();
1425 let path_buf = path.as_ref().to_path_buf();
1426 *state.path_write_counts.entry(path_buf).or_insert(0) += 1;
1427 let new_inode = state.get_and_increment_inode();
1428 let new_mtime = state.get_and_increment_mtime();
1429 let new_len = new_content.len() as u64;
1430 let mut kind = None;
1431 state.write_path(path.as_ref(), |entry| {
1432 match entry {
1433 btree_map::Entry::Vacant(e) => {
1434 kind = Some(PathEventKind::Created);
1435 e.insert(FakeFsEntry::File {
1436 inode: new_inode,
1437 mtime: new_mtime,
1438 len: new_len,
1439 content: new_content,
1440 git_dir_path: None,
1441 });
1442 }
1443 btree_map::Entry::Occupied(mut e) => {
1444 kind = Some(PathEventKind::Changed);
1445 if let FakeFsEntry::File {
1446 inode,
1447 mtime,
1448 len,
1449 content,
1450 ..
1451 } = e.get_mut()
1452 {
1453 *mtime = new_mtime;
1454 *content = new_content;
1455 *len = new_len;
1456 if recreate_inode {
1457 *inode = new_inode;
1458 }
1459 } else {
1460 anyhow::bail!("not a file")
1461 }
1462 }
1463 }
1464 Ok(())
1465 })?;
1466 state.emit_event([(path.as_ref(), kind)]);
1467 Ok(())
1468 }
1469
1470 pub fn read_file_sync(&self, path: impl AsRef<Path>) -> Result<Vec<u8>> {
1471 let path = path.as_ref();
1472 let path = normalize_path(path);
1473 let mut state = self.state.lock();
1474 let entry = state.entry(&path)?;
1475 entry.file_content(&path).cloned()
1476 }
1477
1478 async fn load_internal(&self, path: impl AsRef<Path>) -> Result<Vec<u8>> {
1479 let path = path.as_ref();
1480 let path = normalize_path(path);
1481 self.simulate_random_delay().await;
1482 let mut state = self.state.lock();
1483 let entry = state.entry(&path)?;
1484 entry.file_content(&path).cloned()
1485 }
1486
1487 pub fn pause_events(&self) {
1488 self.state.lock().events_paused = true;
1489 }
1490
1491 pub fn unpause_events_and_flush(&self) {
1492 self.state.lock().events_paused = false;
1493 self.flush_events(usize::MAX);
1494 }
1495
1496 pub fn buffered_event_count(&self) -> usize {
1497 self.state.lock().buffered_events.len()
1498 }
1499
1500 pub fn flush_events(&self, count: usize) {
1501 self.state.lock().flush_events(count);
1502 }
1503
1504 pub(crate) fn entry(&self, target: &Path) -> Result<FakeFsEntry> {
1505 self.state.lock().entry(target).cloned()
1506 }
1507
1508 pub(crate) fn insert_entry(&self, target: &Path, new_entry: FakeFsEntry) -> Result<()> {
1509 let mut state = self.state.lock();
1510 state.write_path(target, |entry| {
1511 match entry {
1512 btree_map::Entry::Vacant(vacant_entry) => {
1513 vacant_entry.insert(new_entry);
1514 }
1515 btree_map::Entry::Occupied(mut occupied_entry) => {
1516 occupied_entry.insert(new_entry);
1517 }
1518 }
1519 Ok(())
1520 })
1521 }
1522
1523 #[must_use]
1524 pub fn insert_tree<'a>(
1525 &'a self,
1526 path: impl 'a + AsRef<Path> + Send,
1527 tree: serde_json::Value,
1528 ) -> futures::future::BoxFuture<'a, ()> {
1529 use futures::FutureExt as _;
1530 use serde_json::Value::*;
1531
1532 async move {
1533 let path = path.as_ref();
1534
1535 match tree {
1536 Object(map) => {
1537 self.create_dir(path).await.unwrap();
1538 for (name, contents) in map {
1539 let mut path = PathBuf::from(path);
1540 path.push(name);
1541 self.insert_tree(&path, contents).await;
1542 }
1543 }
1544 Null => {
1545 self.create_dir(path).await.unwrap();
1546 }
1547 String(contents) => {
1548 self.insert_file(&path, contents.into_bytes()).await;
1549 }
1550 _ => {
1551 panic!("JSON object must contain only objects, strings, or null");
1552 }
1553 }
1554 }
1555 .boxed()
1556 }
1557
1558 pub fn insert_tree_from_real_fs<'a>(
1559 &'a self,
1560 path: impl 'a + AsRef<Path> + Send,
1561 src_path: impl 'a + AsRef<Path> + Send,
1562 ) -> futures::future::BoxFuture<'a, ()> {
1563 use futures::FutureExt as _;
1564
1565 async move {
1566 let path = path.as_ref();
1567 if std::fs::metadata(&src_path).unwrap().is_file() {
1568 let contents = std::fs::read(src_path).unwrap();
1569 self.insert_file(path, contents).await;
1570 } else {
1571 self.create_dir(path).await.unwrap();
1572 for entry in std::fs::read_dir(&src_path).unwrap() {
1573 let entry = entry.unwrap();
1574 self.insert_tree_from_real_fs(path.join(entry.file_name()), entry.path())
1575 .await;
1576 }
1577 }
1578 }
1579 .boxed()
1580 }
1581
1582 pub fn with_git_state_and_paths<T, F>(
1583 &self,
1584 dot_git: &Path,
1585 emit_git_event: bool,
1586 f: F,
1587 ) -> Result<T>
1588 where
1589 F: FnOnce(&mut FakeGitRepositoryState, &Path, &Path) -> T,
1590 {
1591 let mut state = self.state.lock();
1592 let git_event_tx = state.git_event_tx.clone();
1593 let entry = state.entry(dot_git).context("open .git")?;
1594
1595 if let FakeFsEntry::Dir { git_repo_state, .. } = entry {
1596 let repo_state = git_repo_state.get_or_insert_with(|| {
1597 log::debug!("insert git state for {dot_git:?}");
1598 Arc::new(Mutex::new(FakeGitRepositoryState::new(git_event_tx)))
1599 });
1600 let mut repo_state = repo_state.lock();
1601
1602 let result = f(&mut repo_state, dot_git, dot_git);
1603
1604 drop(repo_state);
1605 if emit_git_event {
1606 state.emit_event([(dot_git, Some(PathEventKind::Changed))]);
1607 }
1608
1609 Ok(result)
1610 } else if let FakeFsEntry::File {
1611 content,
1612 git_dir_path,
1613 ..
1614 } = &mut *entry
1615 {
1616 let path = match git_dir_path {
1617 Some(path) => path,
1618 None => {
1619 let path = std::str::from_utf8(content)
1620 .ok()
1621 .and_then(|content| content.strip_prefix("gitdir:"))
1622 .context("not a valid gitfile")?
1623 .trim();
1624 git_dir_path.insert(normalize_path(&dot_git.parent().unwrap().join(path)))
1625 }
1626 }
1627 .clone();
1628 let Some((git_dir_entry, canonical_path)) = state.try_entry(&path, true) else {
1629 anyhow::bail!("pointed-to git dir {path:?} not found")
1630 };
1631 let FakeFsEntry::Dir {
1632 git_repo_state,
1633 entries,
1634 ..
1635 } = git_dir_entry
1636 else {
1637 anyhow::bail!("gitfile points to a non-directory")
1638 };
1639 let common_dir = if let Some(child) = entries.get("commondir") {
1640 Path::new(
1641 std::str::from_utf8(child.file_content("commondir".as_ref())?)
1642 .context("commondir content")?,
1643 )
1644 .to_owned()
1645 } else {
1646 canonical_path.clone()
1647 };
1648 let repo_state = git_repo_state.get_or_insert_with(|| {
1649 Arc::new(Mutex::new(FakeGitRepositoryState::new(git_event_tx)))
1650 });
1651 let mut repo_state = repo_state.lock();
1652
1653 let result = f(&mut repo_state, &canonical_path, &common_dir);
1654
1655 if emit_git_event {
1656 drop(repo_state);
1657 state.emit_event([(canonical_path, Some(PathEventKind::Changed))]);
1658 }
1659
1660 Ok(result)
1661 } else {
1662 anyhow::bail!("not a valid git repository");
1663 }
1664 }
1665
1666 pub fn with_git_state<T, F>(&self, dot_git: &Path, emit_git_event: bool, f: F) -> Result<T>
1667 where
1668 F: FnOnce(&mut FakeGitRepositoryState) -> T,
1669 {
1670 self.with_git_state_and_paths(dot_git, emit_git_event, |state, _, _| f(state))
1671 }
1672
1673 pub fn set_branch_name(&self, dot_git: &Path, branch: Option<impl Into<String>>) {
1674 self.with_git_state(dot_git, true, |state| {
1675 let branch = branch.map(Into::into);
1676 state.branches.extend(branch.clone());
1677 state.current_branch_name = branch
1678 })
1679 .unwrap();
1680 }
1681
1682 pub fn insert_branches(&self, dot_git: &Path, branches: &[&str]) {
1683 self.with_git_state(dot_git, true, |state| {
1684 if let Some(first) = branches.first()
1685 && state.current_branch_name.is_none()
1686 {
1687 state.current_branch_name = Some(first.to_string())
1688 }
1689 state
1690 .branches
1691 .extend(branches.iter().map(ToString::to_string));
1692 })
1693 .unwrap();
1694 }
1695
1696 pub fn set_unmerged_paths_for_repo(
1697 &self,
1698 dot_git: &Path,
1699 unmerged_state: &[(RepoPath, UnmergedStatus)],
1700 ) {
1701 self.with_git_state(dot_git, true, |state| {
1702 state.unmerged_paths.clear();
1703 state.unmerged_paths.extend(
1704 unmerged_state
1705 .iter()
1706 .map(|(path, content)| (path.clone(), *content)),
1707 );
1708 })
1709 .unwrap();
1710 }
1711
1712 pub fn set_index_for_repo(&self, dot_git: &Path, index_state: &[(&str, String)]) {
1713 self.with_git_state(dot_git, true, |state| {
1714 state.index_contents.clear();
1715 state.index_contents.extend(
1716 index_state
1717 .iter()
1718 .map(|(path, content)| (repo_path(path), content.clone())),
1719 );
1720 })
1721 .unwrap();
1722 }
1723
1724 pub fn set_head_for_repo(
1725 &self,
1726 dot_git: &Path,
1727 head_state: &[(&str, String)],
1728 sha: impl Into<String>,
1729 ) {
1730 self.with_git_state(dot_git, true, |state| {
1731 state.head_contents.clear();
1732 state.head_contents.extend(
1733 head_state
1734 .iter()
1735 .map(|(path, content)| (repo_path(path), content.clone())),
1736 );
1737 state.refs.insert("HEAD".into(), sha.into());
1738 })
1739 .unwrap();
1740 }
1741
1742 pub fn set_head_and_index_for_repo(&self, dot_git: &Path, contents_by_path: &[(&str, String)]) {
1743 self.with_git_state(dot_git, true, |state| {
1744 state.head_contents.clear();
1745 state.head_contents.extend(
1746 contents_by_path
1747 .iter()
1748 .map(|(path, contents)| (repo_path(path), contents.clone())),
1749 );
1750 state.index_contents = state.head_contents.clone();
1751 })
1752 .unwrap();
1753 }
1754
1755 pub fn set_merge_base_content_for_repo(
1756 &self,
1757 dot_git: &Path,
1758 contents_by_path: &[(&str, String)],
1759 ) {
1760 self.with_git_state(dot_git, true, |state| {
1761 use git::Oid;
1762
1763 state.merge_base_contents.clear();
1764 let oids = (1..)
1765 .map(|n| n.to_string())
1766 .map(|n| Oid::from_bytes(n.repeat(20).as_bytes()).unwrap());
1767 for ((path, content), oid) in contents_by_path.iter().zip(oids) {
1768 state.merge_base_contents.insert(repo_path(path), oid);
1769 state.oids.insert(oid, content.clone());
1770 }
1771 })
1772 .unwrap();
1773 }
1774
1775 pub fn set_blame_for_repo(&self, dot_git: &Path, blames: Vec<(RepoPath, git::blame::Blame)>) {
1776 self.with_git_state(dot_git, true, |state| {
1777 state.blames.clear();
1778 state.blames.extend(blames);
1779 })
1780 .unwrap();
1781 }
1782
1783 /// Put the given git repository into a state with the given status,
1784 /// by mutating the head, index, and unmerged state.
1785 pub fn set_status_for_repo(&self, dot_git: &Path, statuses: &[(&str, FileStatus)]) {
1786 let workdir_path = dot_git.parent().unwrap();
1787 let workdir_contents = self.files_with_contents(workdir_path);
1788 self.with_git_state(dot_git, true, |state| {
1789 state.index_contents.clear();
1790 state.head_contents.clear();
1791 state.unmerged_paths.clear();
1792 for (path, content) in workdir_contents {
1793 use util::{paths::PathStyle, rel_path::RelPath};
1794
1795 let repo_path: RepoPath = RelPath::new(path.strip_prefix(&workdir_path).unwrap(), PathStyle::local()).unwrap().into();
1796 let status = statuses
1797 .iter()
1798 .find_map(|(p, status)| (*p == repo_path.as_unix_str()).then_some(status));
1799 let mut content = String::from_utf8_lossy(&content).to_string();
1800
1801 let mut index_content = None;
1802 let mut head_content = None;
1803 match status {
1804 None => {
1805 index_content = Some(content.clone());
1806 head_content = Some(content);
1807 }
1808 Some(FileStatus::Untracked | FileStatus::Ignored) => {}
1809 Some(FileStatus::Unmerged(unmerged_status)) => {
1810 state
1811 .unmerged_paths
1812 .insert(repo_path.clone(), *unmerged_status);
1813 content.push_str(" (unmerged)");
1814 index_content = Some(content.clone());
1815 head_content = Some(content);
1816 }
1817 Some(FileStatus::Tracked(TrackedStatus {
1818 index_status,
1819 worktree_status,
1820 })) => {
1821 match worktree_status {
1822 StatusCode::Modified => {
1823 let mut content = content.clone();
1824 content.push_str(" (modified in working copy)");
1825 index_content = Some(content);
1826 }
1827 StatusCode::TypeChanged | StatusCode::Unmodified => {
1828 index_content = Some(content.clone());
1829 }
1830 StatusCode::Added => {}
1831 StatusCode::Deleted | StatusCode::Renamed | StatusCode::Copied => {
1832 panic!("cannot create these statuses for an existing file");
1833 }
1834 };
1835 match index_status {
1836 StatusCode::Modified => {
1837 let mut content = index_content.clone().expect(
1838 "file cannot be both modified in index and created in working copy",
1839 );
1840 content.push_str(" (modified in index)");
1841 head_content = Some(content);
1842 }
1843 StatusCode::TypeChanged | StatusCode::Unmodified => {
1844 head_content = Some(index_content.clone().expect("file cannot be both unmodified in index and created in working copy"));
1845 }
1846 StatusCode::Added => {}
1847 StatusCode::Deleted => {
1848 head_content = Some("".into());
1849 }
1850 StatusCode::Renamed | StatusCode::Copied => {
1851 panic!("cannot create these statuses for an existing file");
1852 }
1853 };
1854 }
1855 };
1856
1857 if let Some(content) = index_content {
1858 state.index_contents.insert(repo_path.clone(), content);
1859 }
1860 if let Some(content) = head_content {
1861 state.head_contents.insert(repo_path.clone(), content);
1862 }
1863 }
1864 }).unwrap();
1865 }
1866
1867 pub fn set_error_message_for_index_write(&self, dot_git: &Path, message: Option<String>) {
1868 self.with_git_state(dot_git, true, |state| {
1869 state.simulated_index_write_error_message = message;
1870 })
1871 .unwrap();
1872 }
1873
1874 pub fn paths(&self, include_dot_git: bool) -> Vec<PathBuf> {
1875 let mut result = Vec::new();
1876 let mut queue = collections::VecDeque::new();
1877 let state = &*self.state.lock();
1878 queue.push_back((PathBuf::from(util::path!("/")), &state.root));
1879 while let Some((path, entry)) = queue.pop_front() {
1880 if let FakeFsEntry::Dir { entries, .. } = entry {
1881 for (name, entry) in entries {
1882 queue.push_back((path.join(name), entry));
1883 }
1884 }
1885 if include_dot_git
1886 || !path
1887 .components()
1888 .any(|component| component.as_os_str() == *FS_DOT_GIT)
1889 {
1890 result.push(path);
1891 }
1892 }
1893 result
1894 }
1895
1896 pub fn directories(&self, include_dot_git: bool) -> Vec<PathBuf> {
1897 let mut result = Vec::new();
1898 let mut queue = collections::VecDeque::new();
1899 let state = &*self.state.lock();
1900 queue.push_back((PathBuf::from(util::path!("/")), &state.root));
1901 while let Some((path, entry)) = queue.pop_front() {
1902 if let FakeFsEntry::Dir { entries, .. } = entry {
1903 for (name, entry) in entries {
1904 queue.push_back((path.join(name), entry));
1905 }
1906 if include_dot_git
1907 || !path
1908 .components()
1909 .any(|component| component.as_os_str() == *FS_DOT_GIT)
1910 {
1911 result.push(path);
1912 }
1913 }
1914 }
1915 result
1916 }
1917
1918 pub fn files(&self) -> Vec<PathBuf> {
1919 let mut result = Vec::new();
1920 let mut queue = collections::VecDeque::new();
1921 let state = &*self.state.lock();
1922 queue.push_back((PathBuf::from(util::path!("/")), &state.root));
1923 while let Some((path, entry)) = queue.pop_front() {
1924 match entry {
1925 FakeFsEntry::File { .. } => result.push(path),
1926 FakeFsEntry::Dir { entries, .. } => {
1927 for (name, entry) in entries {
1928 queue.push_back((path.join(name), entry));
1929 }
1930 }
1931 FakeFsEntry::Symlink { .. } => {}
1932 }
1933 }
1934 result
1935 }
1936
1937 pub fn files_with_contents(&self, prefix: &Path) -> Vec<(PathBuf, Vec<u8>)> {
1938 let mut result = Vec::new();
1939 let mut queue = collections::VecDeque::new();
1940 let state = &*self.state.lock();
1941 queue.push_back((PathBuf::from(util::path!("/")), &state.root));
1942 while let Some((path, entry)) = queue.pop_front() {
1943 match entry {
1944 FakeFsEntry::File { content, .. } => {
1945 if path.starts_with(prefix) {
1946 result.push((path, content.clone()));
1947 }
1948 }
1949 FakeFsEntry::Dir { entries, .. } => {
1950 for (name, entry) in entries {
1951 queue.push_back((path.join(name), entry));
1952 }
1953 }
1954 FakeFsEntry::Symlink { .. } => {}
1955 }
1956 }
1957 result
1958 }
1959
1960 /// How many `read_dir` calls have been issued.
1961 pub fn read_dir_call_count(&self) -> usize {
1962 self.state.lock().read_dir_call_count
1963 }
1964
1965 pub fn watched_paths(&self) -> Vec<PathBuf> {
1966 let state = self.state.lock();
1967 state
1968 .event_txs
1969 .iter()
1970 .filter_map(|(path, tx)| Some(path.clone()).filter(|_| !tx.is_closed()))
1971 .collect()
1972 }
1973
1974 /// How many `metadata` calls have been issued.
1975 pub fn metadata_call_count(&self) -> usize {
1976 self.state.lock().metadata_call_count
1977 }
1978
1979 /// How many write operations have been issued for a specific path.
1980 pub fn write_count_for_path(&self, path: impl AsRef<Path>) -> usize {
1981 let path = path.as_ref().to_path_buf();
1982 self.state
1983 .lock()
1984 .path_write_counts
1985 .get(&path)
1986 .copied()
1987 .unwrap_or(0)
1988 }
1989
1990 pub fn emit_fs_event(&self, path: impl Into<PathBuf>, event: Option<PathEventKind>) {
1991 self.state.lock().emit_event(std::iter::once((path, event)));
1992 }
1993
1994 fn simulate_random_delay(&self) -> impl futures::Future<Output = ()> {
1995 self.executor.simulate_random_delay()
1996 }
1997}
1998
1999#[cfg(any(test, feature = "test-support"))]
2000impl FakeFsEntry {
2001 fn is_file(&self) -> bool {
2002 matches!(self, Self::File { .. })
2003 }
2004
2005 fn is_symlink(&self) -> bool {
2006 matches!(self, Self::Symlink { .. })
2007 }
2008
2009 fn file_content(&self, path: &Path) -> Result<&Vec<u8>> {
2010 if let Self::File { content, .. } = self {
2011 Ok(content)
2012 } else {
2013 anyhow::bail!("not a file: {path:?}");
2014 }
2015 }
2016
2017 fn dir_entries(&mut self, path: &Path) -> Result<&mut BTreeMap<String, FakeFsEntry>> {
2018 if let Self::Dir { entries, .. } = self {
2019 Ok(entries)
2020 } else {
2021 anyhow::bail!("not a directory: {path:?}");
2022 }
2023 }
2024}
2025
2026#[cfg(any(test, feature = "test-support"))]
2027struct FakeWatcher {
2028 tx: smol::channel::Sender<Vec<PathEvent>>,
2029 original_path: PathBuf,
2030 fs_state: Arc<Mutex<FakeFsState>>,
2031 prefixes: Mutex<Vec<PathBuf>>,
2032}
2033
2034#[cfg(any(test, feature = "test-support"))]
2035impl Watcher for FakeWatcher {
2036 fn add(&self, path: &Path) -> Result<()> {
2037 if path.starts_with(&self.original_path) {
2038 return Ok(());
2039 }
2040 self.fs_state
2041 .try_lock()
2042 .unwrap()
2043 .event_txs
2044 .push((path.to_owned(), self.tx.clone()));
2045 self.prefixes.lock().push(path.to_owned());
2046 Ok(())
2047 }
2048
2049 fn remove(&self, _: &Path) -> Result<()> {
2050 Ok(())
2051 }
2052}
2053
2054#[cfg(any(test, feature = "test-support"))]
2055#[derive(Debug)]
2056struct FakeHandle {
2057 inode: u64,
2058}
2059
2060#[cfg(any(test, feature = "test-support"))]
2061impl FileHandle for FakeHandle {
2062 fn current_path(&self, fs: &Arc<dyn Fs>) -> Result<PathBuf> {
2063 let fs = fs.as_fake();
2064 let mut state = fs.state.lock();
2065 let Some(target) = state.moves.get(&self.inode).cloned() else {
2066 anyhow::bail!("fake fd not moved")
2067 };
2068
2069 if state.try_entry(&target, false).is_some() {
2070 return Ok(target);
2071 }
2072 anyhow::bail!("fake fd target not found")
2073 }
2074}
2075
2076#[cfg(any(test, feature = "test-support"))]
2077#[async_trait::async_trait]
2078impl Fs for FakeFs {
2079 async fn create_dir(&self, path: &Path) -> Result<()> {
2080 self.simulate_random_delay().await;
2081
2082 let mut created_dirs = Vec::new();
2083 let mut cur_path = PathBuf::new();
2084 for component in path.components() {
2085 let should_skip = matches!(component, Component::Prefix(..) | Component::RootDir);
2086 cur_path.push(component);
2087 if should_skip {
2088 continue;
2089 }
2090 let mut state = self.state.lock();
2091
2092 let inode = state.get_and_increment_inode();
2093 let mtime = state.get_and_increment_mtime();
2094 state.write_path(&cur_path, |entry| {
2095 entry.or_insert_with(|| {
2096 created_dirs.push((cur_path.clone(), Some(PathEventKind::Created)));
2097 FakeFsEntry::Dir {
2098 inode,
2099 mtime,
2100 len: 0,
2101 entries: Default::default(),
2102 git_repo_state: None,
2103 }
2104 });
2105 Ok(())
2106 })?
2107 }
2108
2109 self.state.lock().emit_event(created_dirs);
2110 Ok(())
2111 }
2112
2113 async fn create_file(&self, path: &Path, options: CreateOptions) -> Result<()> {
2114 self.simulate_random_delay().await;
2115 let mut state = self.state.lock();
2116 let inode = state.get_and_increment_inode();
2117 let mtime = state.get_and_increment_mtime();
2118 let file = FakeFsEntry::File {
2119 inode,
2120 mtime,
2121 len: 0,
2122 content: Vec::new(),
2123 git_dir_path: None,
2124 };
2125 let mut kind = Some(PathEventKind::Created);
2126 state.write_path(path, |entry| {
2127 match entry {
2128 btree_map::Entry::Occupied(mut e) => {
2129 if options.overwrite {
2130 kind = Some(PathEventKind::Changed);
2131 *e.get_mut() = file;
2132 } else if !options.ignore_if_exists {
2133 anyhow::bail!("path already exists: {path:?}");
2134 }
2135 }
2136 btree_map::Entry::Vacant(e) => {
2137 e.insert(file);
2138 }
2139 }
2140 Ok(())
2141 })?;
2142 state.emit_event([(path, kind)]);
2143 Ok(())
2144 }
2145
2146 async fn create_symlink(&self, path: &Path, target: PathBuf) -> Result<()> {
2147 let mut state = self.state.lock();
2148 let file = FakeFsEntry::Symlink { target };
2149 state
2150 .write_path(path.as_ref(), move |e| match e {
2151 btree_map::Entry::Vacant(e) => {
2152 e.insert(file);
2153 Ok(())
2154 }
2155 btree_map::Entry::Occupied(mut e) => {
2156 *e.get_mut() = file;
2157 Ok(())
2158 }
2159 })
2160 .unwrap();
2161 state.emit_event([(path, Some(PathEventKind::Created))]);
2162
2163 Ok(())
2164 }
2165
2166 async fn create_file_with(
2167 &self,
2168 path: &Path,
2169 mut content: Pin<&mut (dyn AsyncRead + Send)>,
2170 ) -> Result<()> {
2171 let mut bytes = Vec::new();
2172 content.read_to_end(&mut bytes).await?;
2173 self.write_file_internal(path, bytes, true)?;
2174 Ok(())
2175 }
2176
2177 async fn extract_tar_file(
2178 &self,
2179 path: &Path,
2180 content: Archive<Pin<&mut (dyn AsyncRead + Send)>>,
2181 ) -> Result<()> {
2182 let mut entries = content.entries()?;
2183 while let Some(entry) = entries.next().await {
2184 let mut entry = entry?;
2185 if entry.header().entry_type().is_file() {
2186 let path = path.join(entry.path()?.as_ref());
2187 let mut bytes = Vec::new();
2188 entry.read_to_end(&mut bytes).await?;
2189 self.create_dir(path.parent().unwrap()).await?;
2190 self.write_file_internal(&path, bytes, true)?;
2191 }
2192 }
2193 Ok(())
2194 }
2195
2196 async fn rename(&self, old_path: &Path, new_path: &Path, options: RenameOptions) -> Result<()> {
2197 self.simulate_random_delay().await;
2198
2199 let old_path = normalize_path(old_path);
2200 let new_path = normalize_path(new_path);
2201
2202 let mut state = self.state.lock();
2203 let moved_entry = state.write_path(&old_path, |e| {
2204 if let btree_map::Entry::Occupied(e) = e {
2205 Ok(e.get().clone())
2206 } else {
2207 anyhow::bail!("path does not exist: {old_path:?}")
2208 }
2209 })?;
2210
2211 let inode = match moved_entry {
2212 FakeFsEntry::File { inode, .. } => inode,
2213 FakeFsEntry::Dir { inode, .. } => inode,
2214 _ => 0,
2215 };
2216
2217 state.moves.insert(inode, new_path.clone());
2218
2219 state.write_path(&new_path, |e| {
2220 match e {
2221 btree_map::Entry::Occupied(mut e) => {
2222 if options.overwrite {
2223 *e.get_mut() = moved_entry;
2224 } else if !options.ignore_if_exists {
2225 anyhow::bail!("path already exists: {new_path:?}");
2226 }
2227 }
2228 btree_map::Entry::Vacant(e) => {
2229 e.insert(moved_entry);
2230 }
2231 }
2232 Ok(())
2233 })?;
2234
2235 state
2236 .write_path(&old_path, |e| {
2237 if let btree_map::Entry::Occupied(e) = e {
2238 Ok(e.remove())
2239 } else {
2240 unreachable!()
2241 }
2242 })
2243 .unwrap();
2244
2245 state.emit_event([
2246 (old_path, Some(PathEventKind::Removed)),
2247 (new_path, Some(PathEventKind::Created)),
2248 ]);
2249 Ok(())
2250 }
2251
2252 async fn copy_file(&self, source: &Path, target: &Path, options: CopyOptions) -> Result<()> {
2253 self.simulate_random_delay().await;
2254
2255 let source = normalize_path(source);
2256 let target = normalize_path(target);
2257 let mut state = self.state.lock();
2258 let mtime = state.get_and_increment_mtime();
2259 let inode = state.get_and_increment_inode();
2260 let source_entry = state.entry(&source)?;
2261 let content = source_entry.file_content(&source)?.clone();
2262 let mut kind = Some(PathEventKind::Created);
2263 state.write_path(&target, |e| match e {
2264 btree_map::Entry::Occupied(e) => {
2265 if options.overwrite {
2266 kind = Some(PathEventKind::Changed);
2267 Ok(Some(e.get().clone()))
2268 } else if !options.ignore_if_exists {
2269 anyhow::bail!("{target:?} already exists");
2270 } else {
2271 Ok(None)
2272 }
2273 }
2274 btree_map::Entry::Vacant(e) => Ok(Some(
2275 e.insert(FakeFsEntry::File {
2276 inode,
2277 mtime,
2278 len: content.len() as u64,
2279 content,
2280 git_dir_path: None,
2281 })
2282 .clone(),
2283 )),
2284 })?;
2285 state.emit_event([(target, kind)]);
2286 Ok(())
2287 }
2288
2289 async fn remove_dir(&self, path: &Path, options: RemoveOptions) -> Result<()> {
2290 self.simulate_random_delay().await;
2291
2292 let path = normalize_path(path);
2293 let parent_path = path.parent().context("cannot remove the root")?;
2294 let base_name = path.file_name().context("cannot remove the root")?;
2295
2296 let mut state = self.state.lock();
2297 let parent_entry = state.entry(parent_path)?;
2298 let entry = parent_entry
2299 .dir_entries(parent_path)?
2300 .entry(base_name.to_str().unwrap().into());
2301
2302 match entry {
2303 btree_map::Entry::Vacant(_) => {
2304 if !options.ignore_if_not_exists {
2305 anyhow::bail!("{path:?} does not exist");
2306 }
2307 }
2308 btree_map::Entry::Occupied(mut entry) => {
2309 {
2310 let children = entry.get_mut().dir_entries(&path)?;
2311 if !options.recursive && !children.is_empty() {
2312 anyhow::bail!("{path:?} is not empty");
2313 }
2314 }
2315 entry.remove();
2316 }
2317 }
2318 state.emit_event([(path, Some(PathEventKind::Removed))]);
2319 Ok(())
2320 }
2321
2322 async fn remove_file(&self, path: &Path, options: RemoveOptions) -> Result<()> {
2323 self.simulate_random_delay().await;
2324
2325 let path = normalize_path(path);
2326 let parent_path = path.parent().context("cannot remove the root")?;
2327 let base_name = path.file_name().unwrap();
2328 let mut state = self.state.lock();
2329 let parent_entry = state.entry(parent_path)?;
2330 let entry = parent_entry
2331 .dir_entries(parent_path)?
2332 .entry(base_name.to_str().unwrap().into());
2333 match entry {
2334 btree_map::Entry::Vacant(_) => {
2335 if !options.ignore_if_not_exists {
2336 anyhow::bail!("{path:?} does not exist");
2337 }
2338 }
2339 btree_map::Entry::Occupied(mut entry) => {
2340 entry.get_mut().file_content(&path)?;
2341 entry.remove();
2342 }
2343 }
2344 state.emit_event([(path, Some(PathEventKind::Removed))]);
2345 Ok(())
2346 }
2347
2348 async fn open_sync(&self, path: &Path) -> Result<Box<dyn io::Read + Send + Sync>> {
2349 let bytes = self.load_internal(path).await?;
2350 Ok(Box::new(io::Cursor::new(bytes)))
2351 }
2352
2353 async fn open_handle(&self, path: &Path) -> Result<Arc<dyn FileHandle>> {
2354 self.simulate_random_delay().await;
2355 let mut state = self.state.lock();
2356 let inode = match state.entry(path)? {
2357 FakeFsEntry::File { inode, .. } => *inode,
2358 FakeFsEntry::Dir { inode, .. } => *inode,
2359 _ => unreachable!(),
2360 };
2361 Ok(Arc::new(FakeHandle { inode }))
2362 }
2363
2364 async fn load(&self, path: &Path) -> Result<String> {
2365 let content = self.load_internal(path).await?;
2366 Ok(String::from_utf8(content)?)
2367 }
2368
2369 async fn load_bytes(&self, path: &Path) -> Result<Vec<u8>> {
2370 self.load_internal(path).await
2371 }
2372
2373 async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
2374 self.simulate_random_delay().await;
2375 let path = normalize_path(path.as_path());
2376 if let Some(path) = path.parent() {
2377 self.create_dir(path).await?;
2378 }
2379 self.write_file_internal(path, data.into_bytes(), true)?;
2380 Ok(())
2381 }
2382
2383 async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()> {
2384 self.simulate_random_delay().await;
2385 let path = normalize_path(path);
2386 let content = chunks(text, line_ending).collect::<String>();
2387 if let Some(path) = path.parent() {
2388 self.create_dir(path).await?;
2389 }
2390 self.write_file_internal(path, content.into_bytes(), false)?;
2391 Ok(())
2392 }
2393
2394 async fn write(&self, path: &Path, content: &[u8]) -> Result<()> {
2395 self.simulate_random_delay().await;
2396 let path = normalize_path(path);
2397 if let Some(path) = path.parent() {
2398 self.create_dir(path).await?;
2399 }
2400 self.write_file_internal(path, content.to_vec(), false)?;
2401 Ok(())
2402 }
2403
2404 async fn canonicalize(&self, path: &Path) -> Result<PathBuf> {
2405 let path = normalize_path(path);
2406 self.simulate_random_delay().await;
2407 let state = self.state.lock();
2408 let canonical_path = state
2409 .canonicalize(&path, true)
2410 .with_context(|| format!("path does not exist: {path:?}"))?;
2411 Ok(canonical_path)
2412 }
2413
2414 async fn is_file(&self, path: &Path) -> bool {
2415 let path = normalize_path(path);
2416 self.simulate_random_delay().await;
2417 let mut state = self.state.lock();
2418 if let Some((entry, _)) = state.try_entry(&path, true) {
2419 entry.is_file()
2420 } else {
2421 false
2422 }
2423 }
2424
2425 async fn is_dir(&self, path: &Path) -> bool {
2426 self.metadata(path)
2427 .await
2428 .is_ok_and(|metadata| metadata.is_some_and(|metadata| metadata.is_dir))
2429 }
2430
2431 async fn metadata(&self, path: &Path) -> Result<Option<Metadata>> {
2432 self.simulate_random_delay().await;
2433 let path = normalize_path(path);
2434 let mut state = self.state.lock();
2435 state.metadata_call_count += 1;
2436 if let Some((mut entry, _)) = state.try_entry(&path, false) {
2437 let is_symlink = entry.is_symlink();
2438 if is_symlink {
2439 if let Some(e) = state.try_entry(&path, true).map(|e| e.0) {
2440 entry = e;
2441 } else {
2442 return Ok(None);
2443 }
2444 }
2445
2446 Ok(Some(match &*entry {
2447 FakeFsEntry::File {
2448 inode, mtime, len, ..
2449 } => Metadata {
2450 inode: *inode,
2451 mtime: *mtime,
2452 len: *len,
2453 is_dir: false,
2454 is_symlink,
2455 is_fifo: false,
2456 },
2457 FakeFsEntry::Dir {
2458 inode, mtime, len, ..
2459 } => Metadata {
2460 inode: *inode,
2461 mtime: *mtime,
2462 len: *len,
2463 is_dir: true,
2464 is_symlink,
2465 is_fifo: false,
2466 },
2467 FakeFsEntry::Symlink { .. } => unreachable!(),
2468 }))
2469 } else {
2470 Ok(None)
2471 }
2472 }
2473
2474 async fn read_link(&self, path: &Path) -> Result<PathBuf> {
2475 self.simulate_random_delay().await;
2476 let path = normalize_path(path);
2477 let mut state = self.state.lock();
2478 let (entry, _) = state
2479 .try_entry(&path, false)
2480 .with_context(|| format!("path does not exist: {path:?}"))?;
2481 if let FakeFsEntry::Symlink { target } = entry {
2482 Ok(target.clone())
2483 } else {
2484 anyhow::bail!("not a symlink: {path:?}")
2485 }
2486 }
2487
2488 async fn read_dir(
2489 &self,
2490 path: &Path,
2491 ) -> Result<Pin<Box<dyn Send + Stream<Item = Result<PathBuf>>>>> {
2492 self.simulate_random_delay().await;
2493 let path = normalize_path(path);
2494 let mut state = self.state.lock();
2495 state.read_dir_call_count += 1;
2496 let entry = state.entry(&path)?;
2497 let children = entry.dir_entries(&path)?;
2498 let paths = children
2499 .keys()
2500 .map(|file_name| Ok(path.join(file_name)))
2501 .collect::<Vec<_>>();
2502 Ok(Box::pin(futures::stream::iter(paths)))
2503 }
2504
2505 async fn watch(
2506 &self,
2507 path: &Path,
2508 _: Duration,
2509 ) -> (
2510 Pin<Box<dyn Send + Stream<Item = Vec<PathEvent>>>>,
2511 Arc<dyn Watcher>,
2512 ) {
2513 self.simulate_random_delay().await;
2514 let (tx, rx) = smol::channel::unbounded();
2515 let path = path.to_path_buf();
2516 self.state.lock().event_txs.push((path.clone(), tx.clone()));
2517 let executor = self.executor.clone();
2518 let watcher = Arc::new(FakeWatcher {
2519 tx,
2520 original_path: path.to_owned(),
2521 fs_state: self.state.clone(),
2522 prefixes: Mutex::new(vec![path]),
2523 });
2524 (
2525 Box::pin(futures::StreamExt::filter(rx, {
2526 let watcher = watcher.clone();
2527 move |events| {
2528 let result = events.iter().any(|evt_path| {
2529 watcher
2530 .prefixes
2531 .lock()
2532 .iter()
2533 .any(|prefix| evt_path.path.starts_with(prefix))
2534 });
2535 let executor = executor.clone();
2536 async move {
2537 executor.simulate_random_delay().await;
2538 result
2539 }
2540 }
2541 })),
2542 watcher,
2543 )
2544 }
2545
2546 fn open_repo(
2547 &self,
2548 abs_dot_git: &Path,
2549 _system_git_binary: Option<&Path>,
2550 ) -> Option<Arc<dyn GitRepository>> {
2551 use util::ResultExt as _;
2552
2553 self.with_git_state_and_paths(
2554 abs_dot_git,
2555 false,
2556 |_, repository_dir_path, common_dir_path| {
2557 Arc::new(fake_git_repo::FakeGitRepository {
2558 fs: self.this.upgrade().unwrap(),
2559 executor: self.executor.clone(),
2560 dot_git_path: abs_dot_git.to_path_buf(),
2561 repository_dir_path: repository_dir_path.to_owned(),
2562 common_dir_path: common_dir_path.to_owned(),
2563 checkpoints: Arc::default(),
2564 }) as _
2565 },
2566 )
2567 .log_err()
2568 }
2569
2570 async fn git_init(
2571 &self,
2572 abs_work_directory_path: &Path,
2573 _fallback_branch_name: String,
2574 ) -> Result<()> {
2575 self.create_dir(&abs_work_directory_path.join(".git")).await
2576 }
2577
2578 async fn git_clone(&self, _repo_url: &str, _abs_work_directory: &Path) -> Result<()> {
2579 anyhow::bail!("Git clone is not supported in fake Fs")
2580 }
2581
2582 fn is_fake(&self) -> bool {
2583 true
2584 }
2585
2586 async fn is_case_sensitive(&self) -> Result<bool> {
2587 Ok(true)
2588 }
2589
2590 #[cfg(any(test, feature = "test-support"))]
2591 fn as_fake(&self) -> Arc<FakeFs> {
2592 self.this.upgrade().unwrap()
2593 }
2594}
2595
2596fn chunks(rope: &Rope, line_ending: LineEnding) -> impl Iterator<Item = &str> {
2597 rope.chunks().flat_map(move |chunk| {
2598 let mut newline = false;
2599 let end_with_newline = chunk.ends_with('\n').then_some(line_ending.as_str());
2600 chunk
2601 .lines()
2602 .flat_map(move |line| {
2603 let ending = if newline {
2604 Some(line_ending.as_str())
2605 } else {
2606 None
2607 };
2608 newline = true;
2609 ending.into_iter().chain([line])
2610 })
2611 .chain(end_with_newline)
2612 })
2613}
2614
2615pub fn normalize_path(path: &Path) -> PathBuf {
2616 let mut components = path.components().peekable();
2617 let mut ret = if let Some(c @ Component::Prefix(..)) = components.peek().cloned() {
2618 components.next();
2619 PathBuf::from(c.as_os_str())
2620 } else {
2621 PathBuf::new()
2622 };
2623
2624 for component in components {
2625 match component {
2626 Component::Prefix(..) => unreachable!(),
2627 Component::RootDir => {
2628 ret.push(component.as_os_str());
2629 }
2630 Component::CurDir => {}
2631 Component::ParentDir => {
2632 ret.pop();
2633 }
2634 Component::Normal(c) => {
2635 ret.push(c);
2636 }
2637 }
2638 }
2639 ret
2640}
2641
2642pub async fn copy_recursive<'a>(
2643 fs: &'a dyn Fs,
2644 source: &'a Path,
2645 target: &'a Path,
2646 options: CopyOptions,
2647) -> Result<()> {
2648 for (item, is_dir) in read_dir_items(fs, source).await? {
2649 let Ok(item_relative_path) = item.strip_prefix(source) else {
2650 continue;
2651 };
2652 let target_item = if item_relative_path == Path::new("") {
2653 target.to_path_buf()
2654 } else {
2655 target.join(item_relative_path)
2656 };
2657 if is_dir {
2658 if !options.overwrite && fs.metadata(&target_item).await.is_ok_and(|m| m.is_some()) {
2659 if options.ignore_if_exists {
2660 continue;
2661 } else {
2662 anyhow::bail!("{target_item:?} already exists");
2663 }
2664 }
2665 let _ = fs
2666 .remove_dir(
2667 &target_item,
2668 RemoveOptions {
2669 recursive: true,
2670 ignore_if_not_exists: true,
2671 },
2672 )
2673 .await;
2674 fs.create_dir(&target_item).await?;
2675 } else {
2676 fs.copy_file(&item, &target_item, options).await?;
2677 }
2678 }
2679 Ok(())
2680}
2681
2682/// Recursively reads all of the paths in the given directory.
2683///
2684/// Returns a vector of tuples of (path, is_dir).
2685pub async fn read_dir_items<'a>(fs: &'a dyn Fs, source: &'a Path) -> Result<Vec<(PathBuf, bool)>> {
2686 let mut items = Vec::new();
2687 read_recursive(fs, source, &mut items).await?;
2688 Ok(items)
2689}
2690
2691fn read_recursive<'a>(
2692 fs: &'a dyn Fs,
2693 source: &'a Path,
2694 output: &'a mut Vec<(PathBuf, bool)>,
2695) -> BoxFuture<'a, Result<()>> {
2696 use futures::future::FutureExt;
2697
2698 async move {
2699 let metadata = fs
2700 .metadata(source)
2701 .await?
2702 .with_context(|| format!("path does not exist: {source:?}"))?;
2703
2704 if metadata.is_dir {
2705 output.push((source.to_path_buf(), true));
2706 let mut children = fs.read_dir(source).await?;
2707 while let Some(child_path) = children.next().await {
2708 if let Ok(child_path) = child_path {
2709 read_recursive(fs, &child_path, output).await?;
2710 }
2711 }
2712 } else {
2713 output.push((source.to_path_buf(), false));
2714 }
2715 Ok(())
2716 }
2717 .boxed()
2718}
2719
2720// todo(windows)
2721// can we get file id not open the file twice?
2722// https://github.com/rust-lang/rust/issues/63010
2723#[cfg(target_os = "windows")]
2724async fn file_id(path: impl AsRef<Path>) -> Result<u64> {
2725 use std::os::windows::io::AsRawHandle;
2726
2727 use smol::fs::windows::OpenOptionsExt;
2728 use windows::Win32::{
2729 Foundation::HANDLE,
2730 Storage::FileSystem::{
2731 BY_HANDLE_FILE_INFORMATION, FILE_FLAG_BACKUP_SEMANTICS, GetFileInformationByHandle,
2732 },
2733 };
2734
2735 let file = smol::fs::OpenOptions::new()
2736 .read(true)
2737 .custom_flags(FILE_FLAG_BACKUP_SEMANTICS.0)
2738 .open(path)
2739 .await?;
2740
2741 let mut info: BY_HANDLE_FILE_INFORMATION = unsafe { std::mem::zeroed() };
2742 // https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getfileinformationbyhandle
2743 // This function supports Windows XP+
2744 smol::unblock(move || {
2745 unsafe { GetFileInformationByHandle(HANDLE(file.as_raw_handle() as _), &mut info)? };
2746
2747 Ok(((info.nFileIndexHigh as u64) << 32) | (info.nFileIndexLow as u64))
2748 })
2749 .await
2750}
2751
2752#[cfg(target_os = "windows")]
2753fn atomic_replace<P: AsRef<Path>>(
2754 replaced_file: P,
2755 replacement_file: P,
2756) -> windows::core::Result<()> {
2757 use windows::{
2758 Win32::Storage::FileSystem::{REPLACE_FILE_FLAGS, ReplaceFileW},
2759 core::HSTRING,
2760 };
2761
2762 // If the file does not exist, create it.
2763 let _ = std::fs::File::create_new(replaced_file.as_ref());
2764
2765 unsafe {
2766 ReplaceFileW(
2767 &HSTRING::from(replaced_file.as_ref().to_string_lossy().into_owned()),
2768 &HSTRING::from(replacement_file.as_ref().to_string_lossy().into_owned()),
2769 None,
2770 REPLACE_FILE_FLAGS::default(),
2771 None,
2772 None,
2773 )
2774 }
2775}
2776
2777#[cfg(test)]
2778mod tests {
2779 use super::*;
2780 use gpui::BackgroundExecutor;
2781 use serde_json::json;
2782 use util::path;
2783
2784 #[gpui::test]
2785 async fn test_fake_fs(executor: BackgroundExecutor) {
2786 let fs = FakeFs::new(executor.clone());
2787 fs.insert_tree(
2788 path!("/root"),
2789 json!({
2790 "dir1": {
2791 "a": "A",
2792 "b": "B"
2793 },
2794 "dir2": {
2795 "c": "C",
2796 "dir3": {
2797 "d": "D"
2798 }
2799 }
2800 }),
2801 )
2802 .await;
2803
2804 assert_eq!(
2805 fs.files(),
2806 vec![
2807 PathBuf::from(path!("/root/dir1/a")),
2808 PathBuf::from(path!("/root/dir1/b")),
2809 PathBuf::from(path!("/root/dir2/c")),
2810 PathBuf::from(path!("/root/dir2/dir3/d")),
2811 ]
2812 );
2813
2814 fs.create_symlink(path!("/root/dir2/link-to-dir3").as_ref(), "./dir3".into())
2815 .await
2816 .unwrap();
2817
2818 assert_eq!(
2819 fs.canonicalize(path!("/root/dir2/link-to-dir3").as_ref())
2820 .await
2821 .unwrap(),
2822 PathBuf::from(path!("/root/dir2/dir3")),
2823 );
2824 assert_eq!(
2825 fs.canonicalize(path!("/root/dir2/link-to-dir3/d").as_ref())
2826 .await
2827 .unwrap(),
2828 PathBuf::from(path!("/root/dir2/dir3/d")),
2829 );
2830 assert_eq!(
2831 fs.load(path!("/root/dir2/link-to-dir3/d").as_ref())
2832 .await
2833 .unwrap(),
2834 "D",
2835 );
2836 }
2837
2838 #[gpui::test]
2839 async fn test_copy_recursive_with_single_file(executor: BackgroundExecutor) {
2840 let fs = FakeFs::new(executor.clone());
2841 fs.insert_tree(
2842 path!("/outer"),
2843 json!({
2844 "a": "A",
2845 "b": "B",
2846 "inner": {}
2847 }),
2848 )
2849 .await;
2850
2851 assert_eq!(
2852 fs.files(),
2853 vec![
2854 PathBuf::from(path!("/outer/a")),
2855 PathBuf::from(path!("/outer/b")),
2856 ]
2857 );
2858
2859 let source = Path::new(path!("/outer/a"));
2860 let target = Path::new(path!("/outer/a copy"));
2861 copy_recursive(fs.as_ref(), source, target, Default::default())
2862 .await
2863 .unwrap();
2864
2865 assert_eq!(
2866 fs.files(),
2867 vec![
2868 PathBuf::from(path!("/outer/a")),
2869 PathBuf::from(path!("/outer/a copy")),
2870 PathBuf::from(path!("/outer/b")),
2871 ]
2872 );
2873
2874 let source = Path::new(path!("/outer/a"));
2875 let target = Path::new(path!("/outer/inner/a copy"));
2876 copy_recursive(fs.as_ref(), source, target, Default::default())
2877 .await
2878 .unwrap();
2879
2880 assert_eq!(
2881 fs.files(),
2882 vec![
2883 PathBuf::from(path!("/outer/a")),
2884 PathBuf::from(path!("/outer/a copy")),
2885 PathBuf::from(path!("/outer/b")),
2886 PathBuf::from(path!("/outer/inner/a copy")),
2887 ]
2888 );
2889 }
2890
2891 #[gpui::test]
2892 async fn test_copy_recursive_with_single_dir(executor: BackgroundExecutor) {
2893 let fs = FakeFs::new(executor.clone());
2894 fs.insert_tree(
2895 path!("/outer"),
2896 json!({
2897 "a": "A",
2898 "empty": {},
2899 "non-empty": {
2900 "b": "B",
2901 }
2902 }),
2903 )
2904 .await;
2905
2906 assert_eq!(
2907 fs.files(),
2908 vec![
2909 PathBuf::from(path!("/outer/a")),
2910 PathBuf::from(path!("/outer/non-empty/b")),
2911 ]
2912 );
2913 assert_eq!(
2914 fs.directories(false),
2915 vec![
2916 PathBuf::from(path!("/")),
2917 PathBuf::from(path!("/outer")),
2918 PathBuf::from(path!("/outer/empty")),
2919 PathBuf::from(path!("/outer/non-empty")),
2920 ]
2921 );
2922
2923 let source = Path::new(path!("/outer/empty"));
2924 let target = Path::new(path!("/outer/empty copy"));
2925 copy_recursive(fs.as_ref(), source, target, Default::default())
2926 .await
2927 .unwrap();
2928
2929 assert_eq!(
2930 fs.files(),
2931 vec![
2932 PathBuf::from(path!("/outer/a")),
2933 PathBuf::from(path!("/outer/non-empty/b")),
2934 ]
2935 );
2936 assert_eq!(
2937 fs.directories(false),
2938 vec![
2939 PathBuf::from(path!("/")),
2940 PathBuf::from(path!("/outer")),
2941 PathBuf::from(path!("/outer/empty")),
2942 PathBuf::from(path!("/outer/empty copy")),
2943 PathBuf::from(path!("/outer/non-empty")),
2944 ]
2945 );
2946
2947 let source = Path::new(path!("/outer/non-empty"));
2948 let target = Path::new(path!("/outer/non-empty copy"));
2949 copy_recursive(fs.as_ref(), source, target, Default::default())
2950 .await
2951 .unwrap();
2952
2953 assert_eq!(
2954 fs.files(),
2955 vec![
2956 PathBuf::from(path!("/outer/a")),
2957 PathBuf::from(path!("/outer/non-empty/b")),
2958 PathBuf::from(path!("/outer/non-empty copy/b")),
2959 ]
2960 );
2961 assert_eq!(
2962 fs.directories(false),
2963 vec![
2964 PathBuf::from(path!("/")),
2965 PathBuf::from(path!("/outer")),
2966 PathBuf::from(path!("/outer/empty")),
2967 PathBuf::from(path!("/outer/empty copy")),
2968 PathBuf::from(path!("/outer/non-empty")),
2969 PathBuf::from(path!("/outer/non-empty copy")),
2970 ]
2971 );
2972 }
2973
2974 #[gpui::test]
2975 async fn test_copy_recursive(executor: BackgroundExecutor) {
2976 let fs = FakeFs::new(executor.clone());
2977 fs.insert_tree(
2978 path!("/outer"),
2979 json!({
2980 "inner1": {
2981 "a": "A",
2982 "b": "B",
2983 "inner3": {
2984 "d": "D",
2985 },
2986 "inner4": {}
2987 },
2988 "inner2": {
2989 "c": "C",
2990 }
2991 }),
2992 )
2993 .await;
2994
2995 assert_eq!(
2996 fs.files(),
2997 vec![
2998 PathBuf::from(path!("/outer/inner1/a")),
2999 PathBuf::from(path!("/outer/inner1/b")),
3000 PathBuf::from(path!("/outer/inner2/c")),
3001 PathBuf::from(path!("/outer/inner1/inner3/d")),
3002 ]
3003 );
3004 assert_eq!(
3005 fs.directories(false),
3006 vec![
3007 PathBuf::from(path!("/")),
3008 PathBuf::from(path!("/outer")),
3009 PathBuf::from(path!("/outer/inner1")),
3010 PathBuf::from(path!("/outer/inner2")),
3011 PathBuf::from(path!("/outer/inner1/inner3")),
3012 PathBuf::from(path!("/outer/inner1/inner4")),
3013 ]
3014 );
3015
3016 let source = Path::new(path!("/outer"));
3017 let target = Path::new(path!("/outer/inner1/outer"));
3018 copy_recursive(fs.as_ref(), source, target, Default::default())
3019 .await
3020 .unwrap();
3021
3022 assert_eq!(
3023 fs.files(),
3024 vec![
3025 PathBuf::from(path!("/outer/inner1/a")),
3026 PathBuf::from(path!("/outer/inner1/b")),
3027 PathBuf::from(path!("/outer/inner2/c")),
3028 PathBuf::from(path!("/outer/inner1/inner3/d")),
3029 PathBuf::from(path!("/outer/inner1/outer/inner1/a")),
3030 PathBuf::from(path!("/outer/inner1/outer/inner1/b")),
3031 PathBuf::from(path!("/outer/inner1/outer/inner2/c")),
3032 PathBuf::from(path!("/outer/inner1/outer/inner1/inner3/d")),
3033 ]
3034 );
3035 assert_eq!(
3036 fs.directories(false),
3037 vec![
3038 PathBuf::from(path!("/")),
3039 PathBuf::from(path!("/outer")),
3040 PathBuf::from(path!("/outer/inner1")),
3041 PathBuf::from(path!("/outer/inner2")),
3042 PathBuf::from(path!("/outer/inner1/inner3")),
3043 PathBuf::from(path!("/outer/inner1/inner4")),
3044 PathBuf::from(path!("/outer/inner1/outer")),
3045 PathBuf::from(path!("/outer/inner1/outer/inner1")),
3046 PathBuf::from(path!("/outer/inner1/outer/inner2")),
3047 PathBuf::from(path!("/outer/inner1/outer/inner1/inner3")),
3048 PathBuf::from(path!("/outer/inner1/outer/inner1/inner4")),
3049 ]
3050 );
3051 }
3052
3053 #[gpui::test]
3054 async fn test_copy_recursive_with_overwriting(executor: BackgroundExecutor) {
3055 let fs = FakeFs::new(executor.clone());
3056 fs.insert_tree(
3057 path!("/outer"),
3058 json!({
3059 "inner1": {
3060 "a": "A",
3061 "b": "B",
3062 "outer": {
3063 "inner1": {
3064 "a": "B"
3065 }
3066 }
3067 },
3068 "inner2": {
3069 "c": "C",
3070 }
3071 }),
3072 )
3073 .await;
3074
3075 assert_eq!(
3076 fs.files(),
3077 vec![
3078 PathBuf::from(path!("/outer/inner1/a")),
3079 PathBuf::from(path!("/outer/inner1/b")),
3080 PathBuf::from(path!("/outer/inner2/c")),
3081 PathBuf::from(path!("/outer/inner1/outer/inner1/a")),
3082 ]
3083 );
3084 assert_eq!(
3085 fs.load(path!("/outer/inner1/outer/inner1/a").as_ref())
3086 .await
3087 .unwrap(),
3088 "B",
3089 );
3090
3091 let source = Path::new(path!("/outer"));
3092 let target = Path::new(path!("/outer/inner1/outer"));
3093 copy_recursive(
3094 fs.as_ref(),
3095 source,
3096 target,
3097 CopyOptions {
3098 overwrite: true,
3099 ..Default::default()
3100 },
3101 )
3102 .await
3103 .unwrap();
3104
3105 assert_eq!(
3106 fs.files(),
3107 vec![
3108 PathBuf::from(path!("/outer/inner1/a")),
3109 PathBuf::from(path!("/outer/inner1/b")),
3110 PathBuf::from(path!("/outer/inner2/c")),
3111 PathBuf::from(path!("/outer/inner1/outer/inner1/a")),
3112 PathBuf::from(path!("/outer/inner1/outer/inner1/b")),
3113 PathBuf::from(path!("/outer/inner1/outer/inner2/c")),
3114 PathBuf::from(path!("/outer/inner1/outer/inner1/outer/inner1/a")),
3115 ]
3116 );
3117 assert_eq!(
3118 fs.load(path!("/outer/inner1/outer/inner1/a").as_ref())
3119 .await
3120 .unwrap(),
3121 "A"
3122 );
3123 }
3124
3125 #[gpui::test]
3126 async fn test_copy_recursive_with_ignoring(executor: BackgroundExecutor) {
3127 let fs = FakeFs::new(executor.clone());
3128 fs.insert_tree(
3129 path!("/outer"),
3130 json!({
3131 "inner1": {
3132 "a": "A",
3133 "b": "B",
3134 "outer": {
3135 "inner1": {
3136 "a": "B"
3137 }
3138 }
3139 },
3140 "inner2": {
3141 "c": "C",
3142 }
3143 }),
3144 )
3145 .await;
3146
3147 assert_eq!(
3148 fs.files(),
3149 vec![
3150 PathBuf::from(path!("/outer/inner1/a")),
3151 PathBuf::from(path!("/outer/inner1/b")),
3152 PathBuf::from(path!("/outer/inner2/c")),
3153 PathBuf::from(path!("/outer/inner1/outer/inner1/a")),
3154 ]
3155 );
3156 assert_eq!(
3157 fs.load(path!("/outer/inner1/outer/inner1/a").as_ref())
3158 .await
3159 .unwrap(),
3160 "B",
3161 );
3162
3163 let source = Path::new(path!("/outer"));
3164 let target = Path::new(path!("/outer/inner1/outer"));
3165 copy_recursive(
3166 fs.as_ref(),
3167 source,
3168 target,
3169 CopyOptions {
3170 ignore_if_exists: true,
3171 ..Default::default()
3172 },
3173 )
3174 .await
3175 .unwrap();
3176
3177 assert_eq!(
3178 fs.files(),
3179 vec![
3180 PathBuf::from(path!("/outer/inner1/a")),
3181 PathBuf::from(path!("/outer/inner1/b")),
3182 PathBuf::from(path!("/outer/inner2/c")),
3183 PathBuf::from(path!("/outer/inner1/outer/inner1/a")),
3184 PathBuf::from(path!("/outer/inner1/outer/inner1/b")),
3185 PathBuf::from(path!("/outer/inner1/outer/inner2/c")),
3186 PathBuf::from(path!("/outer/inner1/outer/inner1/outer/inner1/a")),
3187 ]
3188 );
3189 assert_eq!(
3190 fs.load(path!("/outer/inner1/outer/inner1/a").as_ref())
3191 .await
3192 .unwrap(),
3193 "B"
3194 );
3195 }
3196
3197 #[gpui::test]
3198 async fn test_realfs_atomic_write(executor: BackgroundExecutor) {
3199 // With the file handle still open, the file should be replaced
3200 // https://github.com/zed-industries/zed/issues/30054
3201 let fs = RealFs {
3202 bundled_git_binary_path: None,
3203 executor,
3204 };
3205 let temp_dir = TempDir::new().unwrap();
3206 let file_to_be_replaced = temp_dir.path().join("file.txt");
3207 let mut file = std::fs::File::create_new(&file_to_be_replaced).unwrap();
3208 file.write_all(b"Hello").unwrap();
3209 // drop(file); // We still hold the file handle here
3210 let content = std::fs::read_to_string(&file_to_be_replaced).unwrap();
3211 assert_eq!(content, "Hello");
3212 smol::block_on(fs.atomic_write(file_to_be_replaced.clone(), "World".into())).unwrap();
3213 let content = std::fs::read_to_string(&file_to_be_replaced).unwrap();
3214 assert_eq!(content, "World");
3215 }
3216
3217 #[gpui::test]
3218 async fn test_realfs_atomic_write_non_existing_file(executor: BackgroundExecutor) {
3219 let fs = RealFs {
3220 bundled_git_binary_path: None,
3221 executor,
3222 };
3223 let temp_dir = TempDir::new().unwrap();
3224 let file_to_be_replaced = temp_dir.path().join("file.txt");
3225 smol::block_on(fs.atomic_write(file_to_be_replaced.clone(), "Hello".into())).unwrap();
3226 let content = std::fs::read_to_string(&file_to_be_replaced).unwrap();
3227 assert_eq!(content, "Hello");
3228 }
3229}