feat(git): add grep to search file in git repo (#2180)

* chore: extract rev_to_commit

* feat(git): add grep to search file in git repo

* [autofix.ci] apply automated fixes

* improve test coverage

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

crates/tabby-git/Cargo.toml

@@ -17,6 +17,11 @@ mime_guess.workspace = true
 futures.workspace = true
 async-stream.workspace = true
 tokio.workspace = true
+tracing.workspace = true
+ignore.workspace = true
+grep = "0.3.1"
+base64-serde = "0.7"
+base64 = "0.22"
 
 [dev-dependencies]
-assert_matches.workspace = true
+assert_matches.workspace = true

crates/tabby-git/src/file_search.rs

@@ -1,9 +1,12 @@
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 
 use async_stream::stream;
 use futures::{Stream, StreamExt};
 use git2::TreeWalkResult;
 
+use super::rev_to_commit;
+use crate::bytes2path;
+
 pub struct GitFileSearch {
     pub r#type: &'static str,
     pub path: String,
@@ -27,13 +30,7 @@ fn walk(
     rev: Option<&str>,
     tx: tokio::sync::mpsc::Sender<(bool, PathBuf)>,
 ) -> anyhow::Result<()> {
-    let commit = if let Some(rev) = rev {
-        let reference = repository.revparse_single(rev)?;
-        reference.peel_to_commit()?
-    } else {
-        repository.head()?.peel_to_commit()?
-    };
-
+    let commit = rev_to_commit(&repository, rev)?;
     let tree = commit.tree()?;
 
     tree.walk(git2::TreeWalkMode::PreOrder, |path, entry| {
@@ -107,17 +104,6 @@ pub async fn search(
     Ok(entries)
 }
 
-#[cfg(unix)]
-pub fn bytes2path(b: &[u8]) -> &Path {
-    use std::os::unix::prelude::*;
-    Path::new(std::ffi::OsStr::from_bytes(b))
-}
-#[cfg(windows)]
-pub fn bytes2path(b: &[u8]) -> &Path {
-    use std::str;
-    Path::new(str::from_utf8(b).unwrap())
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;