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-rw-r--r--helix-vcs/src/git.rs55
-rw-r--r--helix-vcs/src/git/test.rs12
-rw-r--r--helix-vcs/src/lib.rs31
3 files changed, 63 insertions, 35 deletions
diff --git a/helix-vcs/src/git.rs b/helix-vcs/src/git.rs
index 1732bdd0..00a2c596 100644
--- a/helix-vcs/src/git.rs
+++ b/helix-vcs/src/git.rs
@@ -1,3 +1,4 @@
+use anyhow::{bail, Context, Result};
use arc_swap::ArcSwap;
use std::path::Path;
use std::sync::Arc;
@@ -14,7 +15,7 @@ mod test;
pub struct Git;
impl Git {
- fn open_repo(path: &Path, ceiling_dir: Option<&Path>) -> Option<ThreadSafeRepository> {
+ fn open_repo(path: &Path, ceiling_dir: Option<&Path>) -> Result<ThreadSafeRepository> {
// custom open options
let mut git_open_opts_map = gix::sec::trust::Mapping::<gix::open::Options>::default();
@@ -45,26 +46,31 @@ impl Git {
open_options.ceiling_dirs = vec![ceiling_dir.to_owned()];
}
- ThreadSafeRepository::discover_with_environment_overrides_opts(
+ let res = ThreadSafeRepository::discover_with_environment_overrides_opts(
path,
open_options,
git_open_opts_map,
- )
- .ok()
+ )?;
+
+ Ok(res)
}
}
impl DiffProvider for Git {
- fn get_diff_base(&self, file: &Path) -> Option<Vec<u8>> {
+ fn get_diff_base(&self, file: &Path) -> Result<Vec<u8>> {
debug_assert!(!file.exists() || file.is_file());
debug_assert!(file.is_absolute());
// TODO cache repository lookup
- let repo = Git::open_repo(file.parent()?, None)?.to_thread_local();
- let head = repo.head_commit().ok()?;
+
+ let repo_dir = file.parent().context("file has no parent directory")?;
+ let repo = Git::open_repo(repo_dir, None)
+ .context("failed to open git repo")?
+ .to_thread_local();
+ let head = repo.head_commit()?;
let file_oid = find_file_in_commit(&repo, &head, file)?;
- let file_object = repo.find_object(file_oid).ok()?;
+ let file_object = repo.find_object(file_oid)?;
let mut data = file_object.detach().data;
// convert LF to CRLF if configured to avoid showing every line as changed
if repo
@@ -87,35 +93,42 @@ impl DiffProvider for Git {
}
data = normalized_file
}
- Some(data)
+ Ok(data)
}
- fn get_current_head_name(&self, file: &Path) -> Option<Arc<ArcSwap<Box<str>>>> {
+ fn get_current_head_name(&self, file: &Path) -> Result<Arc<ArcSwap<Box<str>>>> {
debug_assert!(!file.exists() || file.is_file());
debug_assert!(file.is_absolute());
- let repo = Git::open_repo(file.parent()?, None)?.to_thread_local();
- let head_ref = repo.head_ref().ok()?;
- let head_commit = repo.head_commit().ok()?;
+ let repo_dir = file.parent().context("file has no parent directory")?;
+ let repo = Git::open_repo(repo_dir, None)
+ .context("failed to open git repo")?
+ .to_thread_local();
+ let head_ref = repo.head_ref()?;
+ let head_commit = repo.head_commit()?;
let name = match head_ref {
Some(reference) => reference.name().shorten().to_string(),
None => head_commit.id.to_hex_with_len(8).to_string(),
};
- Some(Arc::new(ArcSwap::from_pointee(name.into_boxed_str())))
+ Ok(Arc::new(ArcSwap::from_pointee(name.into_boxed_str())))
}
}
/// Finds the object that contains the contents of a file at a specific commit.
-fn find_file_in_commit(repo: &Repository, commit: &Commit, file: &Path) -> Option<ObjectId> {
- let repo_dir = repo.work_dir()?;
- let rel_path = file.strip_prefix(repo_dir).ok()?;
- let tree = commit.tree().ok()?;
- let tree_entry = tree.lookup_entry_by_path(rel_path).ok()??;
+fn find_file_in_commit(repo: &Repository, commit: &Commit, file: &Path) -> Result<ObjectId> {
+ let repo_dir = repo.work_dir().context("repo has no worktree")?;
+ let rel_path = file.strip_prefix(repo_dir)?;
+ let tree = commit.tree()?;
+ let tree_entry = tree
+ .lookup_entry_by_path(rel_path)?
+ .context("file is untracked")?;
match tree_entry.mode() {
// not a file, everything is new, do not show diff
- EntryMode::Tree | EntryMode::Commit | EntryMode::Link => None,
+ mode @ (EntryMode::Tree | EntryMode::Commit | EntryMode::Link) => {
+ bail!("entry at {} is not a file but a {mode:?}", file.display())
+ }
// found a file
- EntryMode::Blob | EntryMode::BlobExecutable => Some(tree_entry.object_id()),
+ EntryMode::Blob | EntryMode::BlobExecutable => Ok(tree_entry.object_id()),
}
}
diff --git a/helix-vcs/src/git/test.rs b/helix-vcs/src/git/test.rs
index 6b1aba7f..9c67d2c3 100644
--- a/helix-vcs/src/git/test.rs
+++ b/helix-vcs/src/git/test.rs
@@ -54,7 +54,7 @@ fn missing_file() {
let file = temp_git.path().join("file.txt");
File::create(&file).unwrap().write_all(b"foo").unwrap();
- assert_eq!(Git.get_diff_base(&file), None);
+ assert!(Git.get_diff_base(&file).is_err());
}
#[test]
@@ -64,7 +64,7 @@ fn unmodified_file() {
let contents = b"foo".as_slice();
File::create(&file).unwrap().write_all(contents).unwrap();
create_commit(temp_git.path(), true);
- assert_eq!(Git.get_diff_base(&file), Some(Vec::from(contents)));
+ assert_eq!(Git.get_diff_base(&file).unwrap(), Vec::from(contents));
}
#[test]
@@ -76,7 +76,7 @@ fn modified_file() {
create_commit(temp_git.path(), true);
File::create(&file).unwrap().write_all(b"bar").unwrap();
- assert_eq!(Git.get_diff_base(&file), Some(Vec::from(contents)));
+ assert_eq!(Git.get_diff_base(&file).unwrap(), Vec::from(contents));
}
/// Test that `get_file_head` does not return content for a directory.
@@ -95,7 +95,7 @@ fn directory() {
std::fs::remove_dir_all(&dir).unwrap();
File::create(&dir).unwrap().write_all(b"bar").unwrap();
- assert_eq!(Git.get_diff_base(&dir), None);
+ assert!(Git.get_diff_base(&dir).is_err());
}
/// Test that `get_file_head` does not return content for a symlink.
@@ -116,6 +116,6 @@ fn symlink() {
symlink("file.txt", &file_link).unwrap();
create_commit(temp_git.path(), true);
- assert_eq!(Git.get_diff_base(&file_link), None);
- assert_eq!(Git.get_diff_base(&file), Some(Vec::from(contents)));
+ assert!(Git.get_diff_base(&file_link).is_err());
+ assert_eq!(Git.get_diff_base(&file).unwrap(), Vec::from(contents));
}
diff --git a/helix-vcs/src/lib.rs b/helix-vcs/src/lib.rs
index 6f5e40d0..4d3a3623 100644
--- a/helix-vcs/src/lib.rs
+++ b/helix-vcs/src/lib.rs
@@ -1,3 +1,4 @@
+use anyhow::{bail, Result};
use arc_swap::ArcSwap;
use std::{path::Path, sync::Arc};
@@ -18,19 +19,19 @@ pub trait DiffProvider {
/// if this provider is used.
/// The data is returned as raw byte without any decoding or encoding performed
/// to ensure all file encodings are handled correctly.
- fn get_diff_base(&self, file: &Path) -> Option<Vec<u8>>;
- fn get_current_head_name(&self, file: &Path) -> Option<Arc<ArcSwap<Box<str>>>>;
+ fn get_diff_base(&self, file: &Path) -> Result<Vec<u8>>;
+ fn get_current_head_name(&self, file: &Path) -> Result<Arc<ArcSwap<Box<str>>>>;
}
#[doc(hidden)]
pub struct Dummy;
impl DiffProvider for Dummy {
- fn get_diff_base(&self, _file: &Path) -> Option<Vec<u8>> {
- None
+ fn get_diff_base(&self, _file: &Path) -> Result<Vec<u8>> {
+ bail!("helix was compiled without git support")
}
- fn get_current_head_name(&self, _file: &Path) -> Option<Arc<ArcSwap<Box<str>>>> {
- None
+ fn get_current_head_name(&self, _file: &Path) -> Result<Arc<ArcSwap<Box<str>>>> {
+ bail!("helix was compiled without git support")
}
}
@@ -42,13 +43,27 @@ impl DiffProviderRegistry {
pub fn get_diff_base(&self, file: &Path) -> Option<Vec<u8>> {
self.providers
.iter()
- .find_map(|provider| provider.get_diff_base(file))
+ .find_map(|provider| match provider.get_diff_base(file) {
+ Ok(res) => Some(res),
+ Err(err) => {
+ log::error!("{err:#?}");
+ log::error!("failed to open diff base for {}", file.display());
+ None
+ }
+ })
}
pub fn get_current_head_name(&self, file: &Path) -> Option<Arc<ArcSwap<Box<str>>>> {
self.providers
.iter()
- .find_map(|provider| provider.get_current_head_name(file))
+ .find_map(|provider| match provider.get_current_head_name(file) {
+ Ok(res) => Some(res),
+ Err(err) => {
+ log::error!("{err:#?}");
+ log::error!("failed to obtain current head name for {}", file.display());
+ None
+ }
+ })
}
}