src/Pure/ML-Systems/windows_path.ML

-(*  Title:      Pure/ML-Systems/windows_path.ML
-    Author:     Makarius
-
-Windows file-system paths.
-*)
-
-fun ml_platform_path path =
-  if String.isPrefix "/" path andalso not (String.isPrefix "//" path) then
-    (case String.tokens (fn c => c = #"/") path of
-      "cygdrive" :: drive :: arcs =>
-        let
-          val vol =
-            (case Char.fromString drive of
-              NONE => drive ^ ":"
-            | SOME d => String.str (Char.toUpper d) ^ ":");
-        in String.concatWith "\\" (vol :: arcs) end
-    | arcs =>
-        (case OS.Process.getEnv "CYGWIN_ROOT" of
-          SOME root => OS.Path.concat (root, String.concatWith "\\" arcs)
-        | NONE => raise Fail "Unknown environment variable CYGWIN_ROOT"))
-  else String.translate (fn #"/" => "\\" | c => String.str c) path;
-
-fun ml_standard_path path =
-  let
-    val {vol, arcs, isAbs} = OS.Path.fromString path;
-    val path' = String.translate (fn #"\\" => "/" | c => String.str c) path;
-  in
-    if isAbs then
-      (case String.explode vol of
-        [d, #":"] =>
-          String.concatWith "/" ("/cygdrive" :: String.str (Char.toLower d) :: arcs)
-      | _ => path')
-    else path'
-  end;