lyra-engine/lyra-game/src/resources.rs

use cfg_if::cfg_if;

/// Load bytes from a file.
pub async fn load_bytes(file_name: &str) -> anyhow::Result<Vec<u8>> {
    cfg_if! {
        if #[cfg(target_arch = "wasm32")] {
            let url = format_url(file_name);
            let bytes = reqwest::get(url)
                .await?
                .bytes()
                .await?;
        } else {
            let out_dir = std::env::var("OUT_DIR").unwrap_or_default();
            let path = std::path::Path::new(&out_dir)
                .join("res")
                .join(file_name);
            let bytes = std::fs::read(path)?;
        }
    }

    Ok(bytes)
}

/// Load the string content from a file.
pub async fn load_string(file_name: &str) -> anyhow::Result<String> {
    let bytes = load_bytes(file_name).await?;
    Ok(String::from(std::str::from_utf8(&bytes)?))
}