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use {ErrorKind, Result, ResultExt};
use std::env;
use std::fs;
use std::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> {
let dir = get_cache_dir()?;
fs::create_dir_all(&dir).chain_err(|| ErrorKind::CreateDirFailed(dir.clone()))?;
Ok(dir)
}
fn get_cache_dir() -> Result<PathBuf> {
match env::var_os("MULLVAD_CACHE_DIR") {
Some(path) => Ok(PathBuf::from(path)),
None => get_default_cache_dir(),
}
}
#[cfg(target_os = "linux")]
fn get_default_cache_dir() -> Result<PathBuf> {
Ok(PathBuf::from("/var/cache/mullvad-daemon"))
}
#[cfg(any(target_os = "macos", windows))]
fn get_default_cache_dir() -> Result<PathBuf> {
Ok(::app_dirs::get_app_root(
::app_dirs::AppDataType::UserCache,
&::metadata::APP_INFO,
)?)
}
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