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Detect workspace root using language markers (#1370)

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* Detect workspace root using language markers

* Avoid allocating root_markers

* Update helix-core/src/lib.rs

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

* Update helix-core/src/lib.rs

Co-authored-by: Kirawi <67773714+kirawi@users.noreply.github.com>

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
Co-authored-by: Kirawi <67773714+kirawi@users.noreply.github.com>
This commit is contained in:
Alexis Mousset 2021-12-31 09:06:54 +01:00 • committed by GitHub
parent 8fda87af2b
commit 8a019b423f
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5 changed files with 35 additions and 9 deletions
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32
helix-core/src/lib.rs
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@ -39,8 +39,14 @@ pub fn find_first_non_whitespace_char(line: RopeSlice) -> Option<usize> {
line.chars().position(|ch| !ch.is_whitespace())
}
/// Find `.git` root.
pub fn find_root(root: Option<&str>) -> Option<std::path::PathBuf> {
/// Find project root.
///
/// Order of detection:
/// * Top-most folder containing a root marker in current git repository
/// * Git repostory root if no marker detected
/// * Top-most folder containing a root marker if not git repository detected
/// * Current working directory as fallback
pub fn find_root(root: Option<&str>, root_markers: &[String]) -> Option<std::path::PathBuf> {
let current_dir = std::env::current_dir().expect("unable to determine current directory");
let root = match root {
@ -52,16 +58,30 @@ pub fn find_root(root: Option<&str>) -> Option<std::path::PathBuf> {
current_dir.join(root)
}
}
None => current_dir,
None => current_dir.clone(),
};
let mut top_marker = None;
for ancestor in root.ancestors() {
// TODO: also use defined roots if git isn't found
for marker in root_markers {
if ancestor.join(marker).exists() {
top_marker = Some(ancestor);
break;
}
}
// don't go higher than repo
if ancestor.join(".git").is_dir() {
return Some(ancestor.to_path_buf());
// Use workspace if detected from marker
return Some(top_marker.unwrap_or(ancestor).to_path_buf());
}
}
None
// In absence of git repo, use workspace if detected
if top_marker.is_some() {
top_marker.map(|a| a.to_path_buf())
} else {
Some(current_dir)
}
}
pub fn runtime_dir() -> std::path::PathBuf {