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type t =
{ env : string -> string option
; win32 : bool
; home_dir : string
; mutable cache_dir : string
; mutable config_dir : string
; mutable data_dir : string
; mutable state_dir : string
; mutable runtime_dir : string option
}
let ( / ) = Filename.concat
type known_folder =
| InternetCache
| LocalAppData
external get_known_folder_path
: known_folder
-> string option
= "dune_xdg__get_known_folder_path"
let make t env_var unix_default win32_folder =
let default =
if t.win32
then (
match get_known_folder_path win32_folder with
| None -> ""
| Some s -> s)
else unix_default
in
match t.env env_var with
| None -> default
| Some s when Filename.is_relative s -> default
| Some s -> s
;;
let cache_dir t =
let home = t.home_dir in
make t "XDG_CACHE_HOME" (home / ".cache") InternetCache
;;
let config_dir t =
let home = t.home_dir in
make t "XDG_CONFIG_HOME" (home / ".config") LocalAppData
;;
let data_dir t =
let home = t.home_dir in
make t "XDG_DATA_HOME" (home / ".local" / "share") LocalAppData
;;
let state_dir t =
let home = t.home_dir in
make t "XDG_STATE_HOME" (home / ".local" / "state") LocalAppData
;;
let create ?win32 ~env () =
let win32 =
match win32 with
| None -> Sys.win32
| Some s -> s
in
let home_dir =
let var = if win32 then "USERPROFILE" else "HOME" in
match env var with
| None -> ""
| Some s -> s
in
let t =
{ env
; win32
; home_dir
; cache_dir = ""
; config_dir = ""
; data_dir = ""
; state_dir = ""
; runtime_dir = None
}
in
t.cache_dir <- cache_dir t;
t.config_dir <- config_dir t;
t.data_dir <- data_dir t;
t.state_dir <- state_dir t;
t.runtime_dir <- env "XDG_RUNTIME_DIR";
t
;;
let home_dir t = t.home_dir
let config_dir t = t.config_dir
let data_dir t = t.data_dir
let cache_dir t = t.cache_dir
let state_dir t = t.state_dir
let runtime_dir t = t.runtime_dir