microlens-process-0.2.0.1: Micro-optics for the process library

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

System.Process.Microlens.Optics

Contents

Description

Just the (classy) optics

Synopsis

Traversals

_ShellCommand :: Traversal' CmdSpec String Source #

A Traversal' into the ShellCommand case of a CmdSpec

Examples:

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

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

A Traversal' 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"]

arguments :: Traversal' CmdSpec [String] Source #

Traversal' into the arguments of a command

Examples:

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

Lenses

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

An isomorphism between a ProcessHandler and its tuple representation

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 Traversal' into the raw command of a CmdSpec

Instances
IsRaw CmdSpec Source # 
Instance details

Defined in System.Process.Microlens.CmdSpec

class IsShell a where Source #

Classy Traversal' into the shell command of a CmdSpec

class IsInherit a where Source #

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

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. Any StdStream will have a prism into CreatePipe - it is just an overwrite to CreatePipe

class IsNoStream a where Source #

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.

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