Function cache_dir

native/shared/src/sdf_cache.rs:109–130

Platform cache root. Returns `None` when the host has no usable cache directory (wasm) or when the env vars used to derive the path aren't set. Resolution order: - macOS / iOS / tvOS / watchOS: `$HOME/Library/Caches/bloom/sdf` - Linux / Android: `${XDG_CACHE_HOME:-$HOME/.cache}/bloom/sdf` - Windows: `%LOCALAPPDATA%\bloom\cache\sdf` - wasm32:

()

///   - Windows:                      `%LOCALAPPDATA%\bloom\cache\sdf`
///   - wasm32:                       `None`
pub fn cache_dir() -> Option<PathBuf> {
    #[cfg(target_arch = "wasm32")]
    { return None; }

    #[cfg(not(target_arch = "wasm32"))]
    {
        let dir = if cfg!(target_vendor = "apple") {
            let home = std::env::var_os("HOME")?;
            PathBuf::from(home).join("Library").join("Caches").join("bloom").join("sdf")
        } else if cfg!(target_os = "windows") {
            let local = std::env::var_os("LOCALAPPDATA")?;
            PathBuf::from(local).join("bloom").join("cache").join("sdf")
        } else {
            // Linux + Android (XDG-style).
            let base = std::env::var_os("XDG_CACHE_HOME")
                .map(PathBuf::from)
                .or_else(|| std::env::var_os("HOME").map(|h| PathBuf::from(h).join(".cache")))?;
            base.join("bloom").join("sdf")
        };
        Some(dir)
    }
}

/// Resolve a hash to its cache file path, creating the cache root if
/// needed. Returns `None` if the cache dir can't be created.