1use crate::FakeFs;
2use anyhow::{Context as _, Result, anyhow};
3use collections::{HashMap, HashSet};
4use futures::future::{self, BoxFuture};
5use git::{
6 blame::Blame,
7 repository::{
8 AskPassDelegate, Branch, CommitDetails, GitRepository, GitRepositoryCheckpoint,
9 PushOptions, Remote, RepoPath, ResetMode,
10 },
11 status::{FileStatus, GitStatus, StatusCode, TrackedStatus, UnmergedStatus},
12};
13use gpui::{AsyncApp, BackgroundExecutor};
14use ignore::gitignore::GitignoreBuilder;
15use rope::Rope;
16use smol::future::FutureExt as _;
17use std::{path::PathBuf, sync::Arc};
18
19#[derive(Clone)]
20pub struct FakeGitRepository {
21 pub(crate) fs: Arc<FakeFs>,
22 pub(crate) executor: BackgroundExecutor,
23 pub(crate) dot_git_path: PathBuf,
24}
25
26#[derive(Debug, Clone)]
27pub struct FakeGitRepositoryState {
28 pub path: PathBuf,
29 pub event_emitter: smol::channel::Sender<PathBuf>,
30 pub unmerged_paths: HashMap<RepoPath, UnmergedStatus>,
31 pub head_contents: HashMap<RepoPath, String>,
32 pub index_contents: HashMap<RepoPath, String>,
33 pub blames: HashMap<RepoPath, Blame>,
34 pub current_branch_name: Option<String>,
35 pub branches: HashSet<String>,
36 pub simulated_index_write_error_message: Option<String>,
37}
38
39impl FakeGitRepositoryState {
40 pub fn new(path: PathBuf, event_emitter: smol::channel::Sender<PathBuf>) -> Self {
41 FakeGitRepositoryState {
42 path,
43 event_emitter,
44 head_contents: Default::default(),
45 index_contents: Default::default(),
46 unmerged_paths: Default::default(),
47 blames: Default::default(),
48 current_branch_name: Default::default(),
49 branches: Default::default(),
50 simulated_index_write_error_message: Default::default(),
51 }
52 }
53}
54
55impl FakeGitRepository {
56 fn with_state<F, T>(&self, f: F) -> T
57 where
58 F: FnOnce(&mut FakeGitRepositoryState) -> T,
59 {
60 self.fs
61 .with_git_state(&self.dot_git_path, false, f)
62 .unwrap()
63 }
64
65 fn with_state_async<F, T>(&self, write: bool, f: F) -> BoxFuture<'static, Result<T>>
66 where
67 F: 'static + Send + FnOnce(&mut FakeGitRepositoryState) -> Result<T>,
68 T: Send,
69 {
70 let fs = self.fs.clone();
71 let executor = self.executor.clone();
72 let dot_git_path = self.dot_git_path.clone();
73 async move {
74 executor.simulate_random_delay().await;
75 fs.with_git_state(&dot_git_path, write, f)?
76 }
77 .boxed()
78 }
79}
80
81impl GitRepository for FakeGitRepository {
82 fn reload_index(&self) {}
83
84 fn load_index_text(&self, path: RepoPath) -> BoxFuture<Option<String>> {
85 async {
86 self.with_state_async(false, move |state| {
87 state
88 .index_contents
89 .get(path.as_ref())
90 .ok_or_else(|| anyhow!("not present in index"))
91 .cloned()
92 })
93 .await
94 .ok()
95 }
96 .boxed()
97 }
98
99 fn load_committed_text(&self, path: RepoPath) -> BoxFuture<Option<String>> {
100 async {
101 self.with_state_async(false, move |state| {
102 state
103 .head_contents
104 .get(path.as_ref())
105 .ok_or_else(|| anyhow!("not present in HEAD"))
106 .cloned()
107 })
108 .await
109 .ok()
110 }
111 .boxed()
112 }
113
114 fn load_commit(
115 &self,
116 _commit: String,
117 _cx: AsyncApp,
118 ) -> BoxFuture<Result<git::repository::CommitDiff>> {
119 unimplemented!()
120 }
121
122 fn set_index_text(
123 &self,
124 path: RepoPath,
125 content: Option<String>,
126 _env: Arc<HashMap<String, String>>,
127 ) -> BoxFuture<anyhow::Result<()>> {
128 self.with_state_async(true, move |state| {
129 if let Some(message) = state.simulated_index_write_error_message.clone() {
130 return Err(anyhow!("{}", message));
131 } else if let Some(content) = content {
132 state.index_contents.insert(path, content);
133 } else {
134 state.index_contents.remove(&path);
135 }
136 Ok(())
137 })
138 }
139
140 fn remote_url(&self, _name: &str) -> Option<String> {
141 None
142 }
143
144 fn head_sha(&self) -> Option<String> {
145 None
146 }
147
148 fn merge_head_shas(&self) -> Vec<String> {
149 vec![]
150 }
151
152 fn show(&self, _commit: String) -> BoxFuture<Result<CommitDetails>> {
153 unimplemented!()
154 }
155
156 fn reset(
157 &self,
158 _commit: String,
159 _mode: ResetMode,
160 _env: Arc<HashMap<String, String>>,
161 ) -> BoxFuture<Result<()>> {
162 unimplemented!()
163 }
164
165 fn checkout_files(
166 &self,
167 _commit: String,
168 _paths: Vec<RepoPath>,
169 _env: Arc<HashMap<String, String>>,
170 ) -> BoxFuture<Result<()>> {
171 unimplemented!()
172 }
173
174 fn path(&self) -> PathBuf {
175 self.with_state(|state| state.path.clone())
176 }
177
178 fn main_repository_path(&self) -> PathBuf {
179 self.path()
180 }
181
182 fn merge_message(&self) -> BoxFuture<Option<String>> {
183 async move { None }.boxed()
184 }
185
186 fn status(&self, path_prefixes: &[RepoPath]) -> BoxFuture<Result<GitStatus>> {
187 let workdir_path = self.dot_git_path.parent().unwrap();
188
189 // Load gitignores
190 let ignores = workdir_path
191 .ancestors()
192 .filter_map(|dir| {
193 let ignore_path = dir.join(".gitignore");
194 let content = self.fs.read_file_sync(ignore_path).ok()?;
195 let content = String::from_utf8(content).ok()?;
196 let mut builder = GitignoreBuilder::new(dir);
197 for line in content.lines() {
198 builder.add_line(Some(dir.into()), line).ok()?;
199 }
200 builder.build().ok()
201 })
202 .collect::<Vec<_>>();
203
204 // Load working copy files.
205 let git_files: HashMap<RepoPath, (String, bool)> = self
206 .fs
207 .files()
208 .iter()
209 .filter_map(|path| {
210 let repo_path = path.strip_prefix(workdir_path).ok()?;
211 let mut is_ignored = false;
212 for ignore in &ignores {
213 match ignore.matched_path_or_any_parents(path, false) {
214 ignore::Match::None => {}
215 ignore::Match::Ignore(_) => is_ignored = true,
216 ignore::Match::Whitelist(_) => break,
217 }
218 }
219 let content = self
220 .fs
221 .read_file_sync(path)
222 .ok()
223 .map(|content| String::from_utf8(content).unwrap())?;
224 Some((repo_path.into(), (content, is_ignored)))
225 })
226 .collect();
227
228 let result = self.fs.with_git_state(&self.dot_git_path, false, |state| {
229 let mut entries = Vec::new();
230 let paths = state
231 .head_contents
232 .keys()
233 .chain(state.index_contents.keys())
234 .chain(git_files.keys())
235 .collect::<HashSet<_>>();
236 for path in paths {
237 if !path_prefixes.iter().any(|prefix| path.starts_with(prefix)) {
238 continue;
239 }
240
241 let head = state.head_contents.get(path);
242 let index = state.index_contents.get(path);
243 let unmerged = state.unmerged_paths.get(path);
244 let fs = git_files.get(path);
245 let status = match (unmerged, head, index, fs) {
246 (Some(unmerged), _, _, _) => FileStatus::Unmerged(*unmerged),
247 (_, Some(head), Some(index), Some((fs, _))) => {
248 FileStatus::Tracked(TrackedStatus {
249 index_status: if head == index {
250 StatusCode::Unmodified
251 } else {
252 StatusCode::Modified
253 },
254 worktree_status: if fs == index {
255 StatusCode::Unmodified
256 } else {
257 StatusCode::Modified
258 },
259 })
260 }
261 (_, Some(head), Some(index), None) => FileStatus::Tracked(TrackedStatus {
262 index_status: if head == index {
263 StatusCode::Unmodified
264 } else {
265 StatusCode::Modified
266 },
267 worktree_status: StatusCode::Deleted,
268 }),
269 (_, Some(_), None, Some(_)) => FileStatus::Tracked(TrackedStatus {
270 index_status: StatusCode::Deleted,
271 worktree_status: StatusCode::Added,
272 }),
273 (_, Some(_), None, None) => FileStatus::Tracked(TrackedStatus {
274 index_status: StatusCode::Deleted,
275 worktree_status: StatusCode::Deleted,
276 }),
277 (_, None, Some(index), Some((fs, _))) => FileStatus::Tracked(TrackedStatus {
278 index_status: StatusCode::Added,
279 worktree_status: if fs == index {
280 StatusCode::Unmodified
281 } else {
282 StatusCode::Modified
283 },
284 }),
285 (_, None, Some(_), None) => FileStatus::Tracked(TrackedStatus {
286 index_status: StatusCode::Added,
287 worktree_status: StatusCode::Deleted,
288 }),
289 (_, None, None, Some((_, is_ignored))) => {
290 if *is_ignored {
291 continue;
292 }
293 FileStatus::Untracked
294 }
295 (_, None, None, None) => {
296 unreachable!();
297 }
298 };
299 if status
300 != FileStatus::Tracked(TrackedStatus {
301 index_status: StatusCode::Unmodified,
302 worktree_status: StatusCode::Unmodified,
303 })
304 {
305 entries.push((path.clone(), status));
306 }
307 }
308 entries.sort_by(|a, b| a.0.cmp(&b.0));
309 anyhow::Ok(GitStatus {
310 entries: entries.into(),
311 })
312 });
313 async move { result? }.boxed()
314 }
315
316 fn branches(&self) -> BoxFuture<Result<Vec<Branch>>> {
317 self.with_state_async(false, move |state| {
318 let current_branch = &state.current_branch_name;
319 Ok(state
320 .branches
321 .iter()
322 .map(|branch_name| Branch {
323 is_head: Some(branch_name) == current_branch.as_ref(),
324 name: branch_name.into(),
325 most_recent_commit: None,
326 upstream: None,
327 })
328 .collect())
329 })
330 }
331
332 fn change_branch(&self, name: String) -> BoxFuture<Result<()>> {
333 self.with_state_async(true, |state| {
334 state.current_branch_name = Some(name);
335 Ok(())
336 })
337 }
338
339 fn create_branch(&self, name: String) -> BoxFuture<Result<()>> {
340 self.with_state_async(true, move |state| {
341 state.branches.insert(name.to_owned());
342 Ok(())
343 })
344 }
345
346 fn blame(&self, path: RepoPath, _content: Rope) -> BoxFuture<Result<git::blame::Blame>> {
347 self.with_state_async(false, move |state| {
348 state
349 .blames
350 .get(&path)
351 .with_context(|| format!("failed to get blame for {:?}", path.0))
352 .cloned()
353 })
354 }
355
356 fn stage_paths(
357 &self,
358 _paths: Vec<RepoPath>,
359 _env: Arc<HashMap<String, String>>,
360 ) -> BoxFuture<Result<()>> {
361 unimplemented!()
362 }
363
364 fn unstage_paths(
365 &self,
366 _paths: Vec<RepoPath>,
367 _env: Arc<HashMap<String, String>>,
368 ) -> BoxFuture<Result<()>> {
369 unimplemented!()
370 }
371
372 fn commit(
373 &self,
374 _message: gpui::SharedString,
375 _name_and_email: Option<(gpui::SharedString, gpui::SharedString)>,
376 _env: Arc<HashMap<String, String>>,
377 ) -> BoxFuture<Result<()>> {
378 unimplemented!()
379 }
380
381 fn push(
382 &self,
383 _branch: String,
384 _remote: String,
385 _options: Option<PushOptions>,
386 _askpass: AskPassDelegate,
387 _env: Arc<HashMap<String, String>>,
388 _cx: AsyncApp,
389 ) -> BoxFuture<Result<git::repository::RemoteCommandOutput>> {
390 unimplemented!()
391 }
392
393 fn pull(
394 &self,
395 _branch: String,
396 _remote: String,
397 _askpass: AskPassDelegate,
398 _env: Arc<HashMap<String, String>>,
399 _cx: AsyncApp,
400 ) -> BoxFuture<Result<git::repository::RemoteCommandOutput>> {
401 unimplemented!()
402 }
403
404 fn fetch(
405 &self,
406 _askpass: AskPassDelegate,
407 _env: Arc<HashMap<String, String>>,
408 _cx: AsyncApp,
409 ) -> BoxFuture<Result<git::repository::RemoteCommandOutput>> {
410 unimplemented!()
411 }
412
413 fn get_remotes(&self, _branch: Option<String>) -> BoxFuture<Result<Vec<Remote>>> {
414 unimplemented!()
415 }
416
417 fn check_for_pushed_commit(&self) -> BoxFuture<Result<Vec<gpui::SharedString>>> {
418 future::ready(Ok(Vec::new())).boxed()
419 }
420
421 fn diff(&self, _diff: git::repository::DiffType) -> BoxFuture<Result<String>> {
422 unimplemented!()
423 }
424
425 fn checkpoint(&self) -> BoxFuture<'static, Result<GitRepositoryCheckpoint>> {
426 unimplemented!()
427 }
428
429 fn restore_checkpoint(&self, _checkpoint: GitRepositoryCheckpoint) -> BoxFuture<Result<()>> {
430 unimplemented!()
431 }
432
433 fn compare_checkpoints(
434 &self,
435 _left: GitRepositoryCheckpoint,
436 _right: GitRepositoryCheckpoint,
437 ) -> BoxFuture<Result<bool>> {
438 unimplemented!()
439 }
440
441 fn delete_checkpoint(&self, _checkpoint: GitRepositoryCheckpoint) -> BoxFuture<Result<()>> {
442 unimplemented!()
443 }
444
445 fn diff_checkpoints(
446 &self,
447 _base_checkpoint: GitRepositoryCheckpoint,
448 _target_checkpoint: GitRepositoryCheckpoint,
449 ) -> BoxFuture<Result<String>> {
450 unimplemented!()
451 }
452}