Function normalize_relative_path

src/storage.rs:396–428

(path: &str, what: &str)

}

fn normalize_relative_path(path: &str, what: &str) -> Result<String, String> {
    let trimmed = path.trim();

    if trimmed.is_empty() {
        return Err(format!("{what} cannot be empty"));
    }

    if trimmed.starts_with('/') || trimmed.starts_with('\\') {
        return Err(format!("{what} must be a relative path"));
    }

    let bytes = trimmed.as_bytes();
    if bytes.len() >= 2 && bytes[1] == b':' && bytes[0].is_ascii_alphabetic() {
        return Err(format!("{what} must be a relative path"));
    }

    let mut parts: Vec<&str> = Vec::new();
    for part in trimmed.split(|c| c == '/' || c == '\\') {
        if part.is_empty() || part == "." {
            continue;
        }
        if part == ".." {
            return Err(format!("{what} cannot contain '..'"));
        }
        parts.push(part);
    }

    if parts.is_empty() {
        return Err(format!("{what} is invalid"));
    }

    Ok(parts.join("/"))
}

#[cfg(not(target_arch = "wasm32"))]
fn platform_app_data_dir() -> Result<PathBuf, String> {