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: 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: 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: 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 status_blocking(&self, path_prefixes: &[RepoPath]) -> Result<GitStatus> {
183 let workdir_path = self.dot_git_path.parent().unwrap();
184
185 // Load gitignores
186 let ignores = workdir_path
187 .ancestors()
188 .filter_map(|dir| {
189 let ignore_path = dir.join(".gitignore");
190 let content = self.fs.read_file_sync(ignore_path).ok()?;
191 let content = String::from_utf8(content).ok()?;
192 let mut builder = GitignoreBuilder::new(dir);
193 for line in content.lines() {
194 builder.add_line(Some(dir.into()), line).ok()?;
195 }
196 builder.build().ok()
197 })
198 .collect::<Vec<_>>();
199
200 // Load working copy files.
201 let git_files: HashMap<RepoPath, (String, bool)> = self
202 .fs
203 .files()
204 .iter()
205 .filter_map(|path| {
206 let repo_path = path.strip_prefix(workdir_path).ok()?;
207 let mut is_ignored = false;
208 for ignore in &ignores {
209 match ignore.matched_path_or_any_parents(path, false) {
210 ignore::Match::None => {}
211 ignore::Match::Ignore(_) => is_ignored = true,
212 ignore::Match::Whitelist(_) => break,
213 }
214 }
215 let content = self
216 .fs
217 .read_file_sync(path)
218 .ok()
219 .map(|content| String::from_utf8(content).unwrap())?;
220 Some((repo_path.into(), (content, is_ignored)))
221 })
222 .collect();
223
224 self.fs.with_git_state(&self.dot_git_path, false, |state| {
225 let mut entries = Vec::new();
226 let paths = state
227 .head_contents
228 .keys()
229 .chain(state.index_contents.keys())
230 .chain(git_files.keys())
231 .collect::<HashSet<_>>();
232 for path in paths {
233 if !path_prefixes.iter().any(|prefix| path.starts_with(prefix)) {
234 continue;
235 }
236
237 let head = state.head_contents.get(path);
238 let index = state.index_contents.get(path);
239 let unmerged = state.unmerged_paths.get(path);
240 let fs = git_files.get(path);
241 let status = match (unmerged, head, index, fs) {
242 (Some(unmerged), _, _, _) => FileStatus::Unmerged(*unmerged),
243 (_, Some(head), Some(index), Some((fs, _))) => {
244 FileStatus::Tracked(TrackedStatus {
245 index_status: if head == index {
246 StatusCode::Unmodified
247 } else {
248 StatusCode::Modified
249 },
250 worktree_status: if fs == index {
251 StatusCode::Unmodified
252 } else {
253 StatusCode::Modified
254 },
255 })
256 }
257 (_, Some(head), Some(index), None) => FileStatus::Tracked(TrackedStatus {
258 index_status: if head == index {
259 StatusCode::Unmodified
260 } else {
261 StatusCode::Modified
262 },
263 worktree_status: StatusCode::Deleted,
264 }),
265 (_, Some(_), None, Some(_)) => FileStatus::Tracked(TrackedStatus {
266 index_status: StatusCode::Deleted,
267 worktree_status: StatusCode::Added,
268 }),
269 (_, Some(_), None, None) => FileStatus::Tracked(TrackedStatus {
270 index_status: StatusCode::Deleted,
271 worktree_status: StatusCode::Deleted,
272 }),
273 (_, None, Some(index), Some((fs, _))) => FileStatus::Tracked(TrackedStatus {
274 index_status: StatusCode::Added,
275 worktree_status: if fs == index {
276 StatusCode::Unmodified
277 } else {
278 StatusCode::Modified
279 },
280 }),
281 (_, None, Some(_), None) => FileStatus::Tracked(TrackedStatus {
282 index_status: StatusCode::Added,
283 worktree_status: StatusCode::Deleted,
284 }),
285 (_, None, None, Some((_, is_ignored))) => {
286 if *is_ignored {
287 continue;
288 }
289 FileStatus::Untracked
290 }
291 (_, None, None, None) => {
292 unreachable!();
293 }
294 };
295 if status
296 != FileStatus::Tracked(TrackedStatus {
297 index_status: StatusCode::Unmodified,
298 worktree_status: StatusCode::Unmodified,
299 })
300 {
301 entries.push((path.clone(), status));
302 }
303 }
304 entries.sort_by(|a, b| a.0.cmp(&b.0));
305 Ok(GitStatus {
306 entries: entries.into(),
307 })
308 })?
309 }
310
311 fn branches(&self) -> BoxFuture<Result<Vec<Branch>>> {
312 self.with_state_async(false, move |state| {
313 let current_branch = &state.current_branch_name;
314 Ok(state
315 .branches
316 .iter()
317 .map(|branch_name| Branch {
318 is_head: Some(branch_name) == current_branch.as_ref(),
319 name: branch_name.into(),
320 most_recent_commit: None,
321 upstream: None,
322 })
323 .collect())
324 })
325 }
326
327 fn change_branch(&self, name: String) -> BoxFuture<Result<()>> {
328 self.with_state_async(true, |state| {
329 state.current_branch_name = Some(name);
330 Ok(())
331 })
332 }
333
334 fn create_branch(&self, name: String) -> BoxFuture<Result<()>> {
335 self.with_state_async(true, move |state| {
336 state.branches.insert(name.to_owned());
337 Ok(())
338 })
339 }
340
341 fn blame(&self, path: RepoPath, _content: Rope) -> BoxFuture<Result<git::blame::Blame>> {
342 self.with_state_async(false, move |state| {
343 state
344 .blames
345 .get(&path)
346 .with_context(|| format!("failed to get blame for {:?}", path.0))
347 .cloned()
348 })
349 }
350
351 fn stage_paths(
352 &self,
353 _paths: Vec<RepoPath>,
354 _env: HashMap<String, String>,
355 ) -> BoxFuture<Result<()>> {
356 unimplemented!()
357 }
358
359 fn unstage_paths(
360 &self,
361 _paths: Vec<RepoPath>,
362 _env: HashMap<String, String>,
363 ) -> BoxFuture<Result<()>> {
364 unimplemented!()
365 }
366
367 fn commit(
368 &self,
369 _message: gpui::SharedString,
370 _name_and_email: Option<(gpui::SharedString, gpui::SharedString)>,
371 _env: HashMap<String, String>,
372 ) -> BoxFuture<Result<()>> {
373 unimplemented!()
374 }
375
376 fn push(
377 &self,
378 _branch: String,
379 _remote: String,
380 _options: Option<PushOptions>,
381 _askpass: AskPassDelegate,
382 _env: HashMap<String, String>,
383 _cx: AsyncApp,
384 ) -> BoxFuture<Result<git::repository::RemoteCommandOutput>> {
385 unimplemented!()
386 }
387
388 fn pull(
389 &self,
390 _branch: String,
391 _remote: String,
392 _askpass: AskPassDelegate,
393 _env: HashMap<String, String>,
394 _cx: AsyncApp,
395 ) -> BoxFuture<Result<git::repository::RemoteCommandOutput>> {
396 unimplemented!()
397 }
398
399 fn fetch(
400 &self,
401 _askpass: AskPassDelegate,
402 _env: HashMap<String, String>,
403 _cx: AsyncApp,
404 ) -> BoxFuture<Result<git::repository::RemoteCommandOutput>> {
405 unimplemented!()
406 }
407
408 fn get_remotes(&self, _branch: Option<String>) -> BoxFuture<Result<Vec<Remote>>> {
409 unimplemented!()
410 }
411
412 fn check_for_pushed_commit(&self) -> BoxFuture<Result<Vec<gpui::SharedString>>> {
413 future::ready(Ok(Vec::new())).boxed()
414 }
415
416 fn diff(&self, _diff: git::repository::DiffType) -> BoxFuture<Result<String>> {
417 unimplemented!()
418 }
419
420 fn checkpoint(&self) -> BoxFuture<'static, Result<GitRepositoryCheckpoint>> {
421 unimplemented!()
422 }
423
424 fn restore_checkpoint(&self, _checkpoint: GitRepositoryCheckpoint) -> BoxFuture<Result<()>> {
425 unimplemented!()
426 }
427
428 fn compare_checkpoints(
429 &self,
430 _left: GitRepositoryCheckpoint,
431 _right: GitRepositoryCheckpoint,
432 ) -> BoxFuture<Result<bool>> {
433 unimplemented!()
434 }
435
436 fn delete_checkpoint(&self, _checkpoint: GitRepositoryCheckpoint) -> BoxFuture<Result<()>> {
437 unimplemented!()
438 }
439
440 fn diff_checkpoints(
441 &self,
442 _base_checkpoint: GitRepositoryCheckpoint,
443 _target_checkpoint: GitRepositoryCheckpoint,
444 ) -> BoxFuture<Result<String>> {
445 unimplemented!()
446 }
447}