lens-process-0.0.5.0: Optics for system processes

Copyright2019 Emily Pillmore
LicenseBSD
MaintainerEmily Pillmore <emilypi@cohomolo.gy>
StabilityExperimental
PortabilityTypeFamilies, Rank2Types
Safe HaskellSafe
LanguageHaskell2010

System.Process.Lens.Optics

Contents

Description

Just the (classy) optics

Synopsis

Prisms

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

A prism into the RawCommand case of a CmdSpec

_Inherit :: Prism' StdStream StdStream Source #

A prism into the Inherit structure of a StdStream

_UseHandle :: Prism' StdStream Handle Source #

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

_CreatePipe :: Prism' StdStream StdStream Source #

A prism into the CreatePipe structure of a StdStream

_NoStream :: Prism' StdStream StdStream Source #

A prism into the NoStream structure of a StdStream

Isos

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

An iso between the ProcessHandler data and its product representation

Lenses

cmdspec_ :: Lens' CreateProcess CmdSpec Source #

Lens into the cmdspec entry of the CreateProcess record

cwd_ :: Lens' CreateProcess (Maybe FilePath) Source #

Lens into the cwd entry of the CreateProcess record

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

Lens into the env entry of the CreateProcess record

stdin :: Lens' CreateProcess StdStream Source #

Lens into the std_in entry of the CreateProcess record

stdout :: Lens' CreateProcess StdStream Source #

Lens into the std_out entry of the CreateProcess record

stderr :: Lens' CreateProcess StdStream Source #

Lens into the std_err entry of the CreateProcess record

closefds :: Lens' CreateProcess Bool Source #

Lens into the close_fds entry of the CreateProcess record

newsession :: Lens' CreateProcess Bool Source #

Lens into the new_session entry of the CreateProcess record

childgroup :: Lens' CreateProcess (Maybe CGid) Source #

Lens into the child_group entry of the CreateProcess record

childuser :: Lens' CreateProcess (Maybe CUid) Source #

Lens into the child_user entry of the CreateProcess record

hstdin :: Lens' ProcessHandler (Maybe Handle) Source #

A lens into the stdin handle if requested

hstdout :: Lens' ProcessHandler (Maybe Handle) Source #

A lens into the stdout handle if requested

hstderr :: Lens' ProcessHandler (Maybe Handle) Source #

A lens into the stderr handle if requested

hhandle :: Lens' ProcessHandler ProcessHandle Source #

A lens into the process handle

Classy Prisms

class IsRaw a where Source #

Classy prism into the shell command of a CmdSpec

Methods

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

Instances
IsRaw CmdSpec Source # 
Instance details

Defined in System.Process.Lens.CommandSpec

class IsShell a where Source #

Classy prism into the shell command of a CmdSpec

Instances
IsShell CmdSpec Source # 
Instance details

Defined in System.Process.Lens.CommandSpec

class IsInherit a where Source #

Class constraint proving a type has a prism into an Inherit structure. In general, this seems redundant, however, this class is a proof on a that a is an Inherit, which is a wonderful thing to prove.

class IsUseHandle a where Source #

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

class IsCreatePipe a where Source #

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

class IsNoStream a where Source #

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

Classy Lenses

class HasStdin a where Source #

Classy lens for types with a stdin

class HasStdout a where Source #

Classy lens for types with a stdout

class HasStderr a where Source #

Classy lens for types with a stderr