mirror of
https://github.com/idris-lang/Idris2.git
synced 2024-12-19 17:21:59 +03:00
1576a578a0
* contrib library unused import removal * remove a few unused imports. * another round of unused import removal * another round of unused import deletion. * another round of unused import deletion.
62 lines
1.8 KiB
Idris
62 lines
1.8 KiB
Idris
module System.File.Permissions
|
|
|
|
import public System.File.Error
|
|
import System.File.Support
|
|
import public System.File.Types
|
|
|
|
%default total
|
|
|
|
%foreign support "idris2_chmod"
|
|
"node:support:chmod,support_system_file"
|
|
prim__chmod : String -> Int -> PrimIO Int
|
|
|
|
||| The UNIX file modes.
|
|
namespace FileMode
|
|
public export
|
|
data FileMode = Read | Write | Execute
|
|
|
|
||| The permissions of a file, grouped by the 3 types of owners of a file.
|
|
public export
|
|
record Permissions where
|
|
constructor MkPermissions
|
|
user : List FileMode
|
|
group : List FileMode
|
|
others : List FileMode
|
|
|
|
||| Convert the given `Permissions` to their integer value.
|
|
mkMode : Permissions -> Int
|
|
mkMode p
|
|
= getMs (user p) * 64 + getMs (group p) * 8 + getMs (others p)
|
|
where
|
|
getM : FileMode -> Int
|
|
getM Read = 4
|
|
getM Write = 2
|
|
getM Execute = 1
|
|
|
|
getMs : List FileMode -> Int
|
|
getMs = sum . map getM
|
|
|
|
||| Change the permissions of the file with the specified name to the given
|
|
||| integer representation of some permissions.
|
|
||| You likely want to use `chmod` and `Permissions`, or go via `mkMode`
|
|
||| instead of using this.
|
|
|||
|
|
||| @ fname the name of the file whose permissions to change
|
|
||| @ p the integer representation of the permissions to set
|
|
export
|
|
chmodRaw : HasIO io => (fname : String) -> (p : Int) -> io (Either FileError ())
|
|
chmodRaw fname p
|
|
= do ok <- primIO $ prim__chmod fname p
|
|
if ok == 0
|
|
then pure (Right ())
|
|
else returnError
|
|
|
|
||| Change the permissions of the file with the specified name to the
|
|
||| permissions in the given `Permissions` record.
|
|
|||
|
|
||| @ fname the name of the file whose permissions to change
|
|
||| @ p a `Permissions` record containing the permissions to set
|
|
export
|
|
chmod : HasIO io => (fname : String) -> (p : Permissions) -> io (Either FileError ())
|
|
chmod fname p = chmodRaw fname (mkMode p)
|