agent-berth 1.0.1

Monitor and resume coding agents
Documentation 
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use std::path::{Path, PathBuf};

/// Current branch of the repository containing `cwd`, including linked worktrees.
pub fn branch(cwd: &Path) -> Option<String> {
    let git_dir = find_git_dir(cwd)?;
    let head = std::fs::read_to_string(git_dir.join("HEAD")).ok()?;
    let head = head.trim();
    if let Some(reference) = head.strip_prefix("ref: ") {
        let name = reference.strip_prefix("refs/heads/").unwrap_or(reference);
        return Some(name.to_string());
    }
    if head.is_empty() {
        return None;
    }
    Some(head.chars().take(8).collect())
}

fn find_git_dir(cwd: &Path) -> Option<PathBuf> {
    let mut dir = cwd;
    loop {
        let candidate = dir.join(".git");
        if candidate.is_dir() {
            return Some(candidate);
        }
        if candidate.is_file() {
            let text = std::fs::read_to_string(&candidate).ok()?;
            let target = text.trim().strip_prefix("gitdir:")?.trim();
            let target = PathBuf::from(target);
            return Some(if target.is_absolute() {
                target
            } else {
                dir.join(target)
            });
        }
        dir = dir.parent()?;
    }
}

#[cfg(test)]
#[path = "git_tests.rs"]
mod tests;