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-rw-r--r--helix-core/src/lib.rs24
1 files changed, 24 insertions, 0 deletions
diff --git a/helix-core/src/lib.rs b/helix-core/src/lib.rs
index 4be3e71b..cfe466ed 100644
--- a/helix-core/src/lib.rs
+++ b/helix-core/src/lib.rs
@@ -45,6 +45,30 @@ pub(crate) fn find_first_non_whitespace_char(text: RopeSlice, line_num: usize) -
None
}
+pub fn find_root(root: Option<&str>) -> Option<std::path::PathBuf> {
+ let current_dir = std::env::current_dir().expect("unable to determine current directory");
+
+ let root = match root {
+ Some(root) => {
+ let root = std::path::Path::new(root);
+ if root.is_absolute() {
+ root.to_path_buf()
+ } else {
+ current_dir.join(root)
+ }
+ }
+ None => current_dir,
+ };
+
+ for ancestor in root.ancestors() {
+ // TODO: also use defined roots if git isn't found
+ if ancestor.join(".git").is_dir() {
+ return Some(ancestor.to_path_buf());
+ }
+ }
+ None
+}
+
#[cfg(not(embed_runtime))]
pub fn runtime_dir() -> std::path::PathBuf {
// runtime env var || dir where binary is located