mullvad-paths/src/cache.rs


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use crate::Result;
use std::{env, path::PathBuf};

/// Creates and returns the cache directory pointed to by `MULLVAD_CACHE_DIR`, or the default
/// one if that variable is unset.
pub fn cache_dir() -> Result<PathBuf> {
    crate::create_and_return(get_cache_dir, None)
}

fn get_cache_dir() -> Result<PathBuf> {
    match env::var_os("MULLVAD_CACHE_DIR") {
        Some(path) => Ok(PathBuf::from(path)),
        None => get_default_cache_dir(),
    }
}

pub fn get_default_cache_dir() -> Result<PathBuf> {
    let dir;
    #[cfg(target_os = "linux")]
    {
        dir = Ok(PathBuf::from("/var/cache"))
    }
    #[cfg(any(target_os = "macos", windows))]
    {
        dir = dirs::cache_dir().ok_or_else(|| crate::ErrorKind::FindDirError.into())
    }
    dir.map(|dir| dir.join(crate::PRODUCT_NAME))
}