Function canonicalizes_path

crates/chat-cli/src/util/paths.rs:154–173

Canonicalizes path given by expanding the path given

(os: &Os, path_as_str: &str)

/// Canonicalizes path given by expanding the path given
pub fn canonicalizes_path(os: &Os, path_as_str: &str) -> Result<String> {
    let context = |input: &str| Ok(os.env.get(input).ok());
    let home_dir_fn = || os.env.home().map(|p| p.to_string_lossy().to_string());

    let expanded = shellexpand::full_with_context(path_as_str, home_dir_fn, context)?;
    let path_buf = if !expanded.starts_with("/") {
        let current_dir = os.env.current_dir()?;
        current_dir.join(expanded.as_ref() as &str)
    } else {
        PathBuf::from(expanded.as_ref() as &str)
    };

    match path_buf.canonicalize() {
        Ok(normalized) => Ok(normalized.as_path().to_string_lossy().to_string()),
        Err(_) => {
            let normalized = normalize_path(&path_buf);
            Ok(normalized.to_string_lossy().to_string())
        },
    }
}

/// Manually normalize a path by resolving . and .. components
fn normalize_path(path: &std::path::Path) -> std::path::PathBuf {