dirs 1.0.0

A tiny library that provides platform-specific standard locations of directories for config, cache and other data on Linux, Windows and macOS by leveraging the mechanisms defined by the XDG base/user directory specifications on Linux, the Known Folder API on Windows, and the Standard Directory guidelines on macOS.
Documentation 
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#![cfg(target_os = "macos")]

use std::path::PathBuf;

use unix;

pub fn home_dir()       -> Option<PathBuf> { unix::home_dir() }
pub fn cache_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Caches")) }
pub fn config_dir()     -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Preferences")) }
pub fn data_dir()       -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Application Support")) }
pub fn data_local_dir() -> Option<PathBuf> { data_dir() }
pub fn executable_dir() -> Option<PathBuf> { None }
pub fn runtime_dir()    -> Option<PathBuf> { None }
pub fn audio_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Music")) }
pub fn desktop_dir()    -> Option<PathBuf> { home_dir().map(|h| h.join("Desktop")) }
pub fn document_dir()   -> Option<PathBuf> { home_dir().map(|h| h.join("Documents")) }
pub fn download_dir()   -> Option<PathBuf> { home_dir().map(|h| h.join("Downloads")) }
pub fn font_dir()       -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Fonts")) }
pub fn picture_dir()    -> Option<PathBuf> { home_dir().map(|h| h.join("Pictures")) }
pub fn public_dir()     -> Option<PathBuf> { home_dir().map(|h| h.join("Public")) }
pub fn template_dir()   -> Option<PathBuf> { None }
pub fn video_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Movies")) }