Copyright	2019 Emily Pillmore
License	BSD
Maintainer	Emily Pillmore <emilypi@cohomolo.gy>
Stability	Experimental
Portability	TypeFamilies, Rank2Types
Safe Haskell	None
Language	Haskell2010

System.Process.Lens.ProcessHandler

Contents

Description

Convenient data type with associated optics + isos for working with the output of a createProcess call.

Synopsis

Types

A convenient handler for the output of a createProcess call. This data containes 4 components:

Constructors

ProcessHandler
Fields _hstdin :: Maybe Handle a handle to stdin if it was requested _hstdout :: Maybe Handle a handle to stdout if it was requested _hstderr :: Maybe Handle a handle to stderr if it was requested _hhandle :: ProcessHandle a process handle, containing a pid lock, information regarding ctcl-c delegation, and closed/open handle status info.

Isos

An iso between the ProcessHandler data and its product representation

A lens into the stdin handle if requested

A lens into the stdout handle if requested

A lens into the stderr handle if requested

A lens into the process handle

A default for a CreateProcess