System.Process.Lens.Optics

Just the (classy) optics

Prisms

_ShellCommand :: Prism' CmdSpec String

A prism into the ShellCommand case of a CmdSpec

Examples:

>>> _ShellCommand # "ls -l"
ShellCommand "ls -l"

>>> ShellCommand "ls -l" ^? _ShellCommand
Just "ls -l"

>>> RawCommand "/bin/ls" ["-l"] ^? _ShellCommand
Nothing

_RawCommand :: Prism' CmdSpec (FilePath, [String])

A prism into the RawCommand case of a CmdSpec

Examples:

>>> RawCommand "/bin/ls" ["-l"] ^? _RawCommand
Just ("/bin/ls",["-l"])

>>> RawCommand "/bin/ls" ["-l"] ^? _ShellCommand
Nothing

>>> RawCommand "/bin/ls" ["-l"] ^. _RawCommand . _1
"/bin/ls"

>>> RawCommand "/bin/ls" ["-l"] ^. _RawCommand . _2
["-l"]

_Inherit :: Prism' StdStream ()

A Prism' into the Inherit structure of a StdStream

Examples:

>>> _Inherit # ()
Inherit

_UseHandle :: Prism' StdStream Handle

A Prism' into the UseHandle structure's Handle for a StdStream

Examples:

>>> _UseHandle # System.stdin
UseHandle {handle: <stdin>}

_CreatePipe :: Prism' StdStream ()

A Prism' into the CreatePipe structure of a StdStream

Examples:

>>> _CreatePipe # ()
CreatePipe

_NoStream :: Prism' StdStream ()

A prism into the NoStream structure of a StdStream

Examples:

>>> _NoStream # ()
NoStream

Isos

_Handler :: Iso' ProcessHandler (Maybe Handle, Maybe Handle, Maybe Handle, ProcessHandle)

An iso between the ProcessHandler data and its product representation

Traversals

arguments :: AsRaw a => Traversal' a [String]

Traversal' into the arguments of a command

Examples:

>>> RawCommand "/bin/ls" ["-l"] ^. arguments
["-l"]

Lenses

cmdspec_ :: Lens' CreateProcess CmdSpec

Lens into the cmdspec entry of the CreateProcess record

cwd_ :: Lens' CreateProcess (Maybe FilePath)

Lens into the cwd entry of the CreateProcess record

env_ :: Lens' CreateProcess (Maybe [(String, String)])

Lens into the env entry of the CreateProcess record

stdin_ :: Lens' CreateProcess StdStream

Lens into the std_in entry of the CreateProcess record

stdout_ :: Lens' CreateProcess StdStream

Lens into the std_out entry of the CreateProcess record

stderr_ :: Lens' CreateProcess StdStream

Lens into the std_err entry of the CreateProcess record

closefds :: Lens' CreateProcess Bool

Lens into the close_fds entry of the CreateProcess record

creategroup :: Lens' CreateProcess Bool

Lens into the create_group entry of the CreateProcess record

delegatectlc :: Lens' CreateProcess Bool

Lens into the delegate_ctlc entry of the CreateProcess record

newsession :: Lens' CreateProcess Bool

Lens into the new_session entry of the CreateProcess record

detachconsole :: Lens' CreateProcess Bool

Lens into the detach_console entry of the CreateProcess record

createnewconsole :: Lens' CreateProcess Bool

Lens into the create_new_console entry of the CreateProcess record

childgroup :: Lens' CreateProcess (Maybe CGid)

Lens into the child_group entry of the CreateProcess record

childuser :: Lens' CreateProcess (Maybe CUid)

Lens into the child_user entry of the CreateProcess record

useprocessjobs :: Lens' CreateProcess Bool

Lens into the use_process_jobs entry of the CreateProcess record

hstdin :: Lens' ProcessHandler (Maybe Handle)

A lens into the stdin handle if requested

hstdout :: Lens' ProcessHandler (Maybe Handle)

A lens into the stdout handle if requested

hstderr :: Lens' ProcessHandler (Maybe Handle)

A lens into the stderr handle if requested

hhandle :: Lens' ProcessHandler ProcessHandle

A lens into the process handle

Classy Prisms

class AsRaw a where

Classy prism into the raw command of a CmdSpec

Examples:

>>> f :: AsRaw a => a -> Maybe FilePath; f = preview (_Raw . _1)
>>> f $ _RawCommand # ("/bin/ls", ["ls -l"])
Just "/bin/ls"

Methods

_Raw :: Prism' a (FilePath, [String])

Instances

AsRaw CmdSpec

Defined in System.Process.Lens.CmdSpec

Methods

_Raw :: Prism' CmdSpec (FilePath, [String])

class AsShell a where

Classy prism into the shell command of a CmdSpec

Examples:

>>> f :: AsShell a => a -> Maybe String; f = preview _Shell
>>> f $ _ShellCommand # "ls -l"
Just "ls -l"

Methods

_Shell :: Prism' a String

Instances

AsShell CmdSpec

Defined in System.Process.Lens.CmdSpec

Methods

_Shell :: Prism' CmdSpec String

class AsInherit a where

Class constraint proving a type has a prism into an Inherit structure. Any StdStream will have a prism into Inherit - it is just an overwrite to Inherit

Methods

_Inherits :: Prism' a ()

Instances

AsInherit StdStream

Defined in System.Process.Lens.StdStream

Methods

_Inherits :: Prism' StdStream ()

class AsUseHandle a where

Class constraint proving a type has a prism into a Handle via a UseHandle structure.

Methods

_UsesHandle :: Prism' a Handle

Instances

AsUseHandle StdStream

Defined in System.Process.Lens.StdStream

Methods

_UsesHandle :: Prism' StdStream Handle

class AsCreatePipe a where

Class constraint proving a type has a prism into a Handle via a UseHandle structure. Any StdStream will have a prism into CreatePipe - it is just an overwrite to CreatePipe

Methods

_CreatesPipe :: Prism' a ()

Instances

AsCreatePipe StdStream

Defined in System.Process.Lens.StdStream

Methods

_CreatesPipe :: Prism' StdStream ()

class AsNoStream a where

Class constraint proving a type has a prism into a Handle via a UseHandle structure. Any StdStream will have a prism into NoStream - it is just an overwrite to NoStream.

Methods

_NoStreams :: Prism' a ()

Instances

AsNoStream StdStream

Defined in System.Process.Lens.StdStream

Methods

_NoStreams :: Prism' StdStream ()

Classy Lenses

class HasStdin a where

Classy lens for types with a stdin

Methods

_Stdin :: Lens' a StdStream

Instances

HasStdin CreateProcess

Defined in System.Process.Lens.CreateProcess

Methods

_Stdin :: Lens' CreateProcess StdStream

HasStdin StdStream

Defined in System.Process.Lens.CreateProcess

Methods

_Stdin :: Lens' StdStream StdStream

class HasStdout a where

Classy lens for types with a stdout

Methods

_Stdout :: Lens' a StdStream

Instances

HasStdout CreateProcess

Defined in System.Process.Lens.CreateProcess

Methods

_Stdout :: Lens' CreateProcess StdStream

HasStdout StdStream

Defined in System.Process.Lens.CreateProcess

Methods

_Stdout :: Lens' StdStream StdStream

class HasStderr a where

Classy lens for types with a stderr

Methods

_Stderr :: Lens' a StdStream

Instances

HasStderr CreateProcess

Defined in System.Process.Lens.CreateProcess

Methods

_Stderr :: Lens' CreateProcess StdStream

HasStderr StdStream

Defined in System.Process.Lens.CreateProcess

Methods

_Stderr :: Lens' StdStream StdStream