Sys.CmdSpec

Documentation

data CmdSpec

Constructors

ShellCommand String

A command line to execute using the shell

RawCommand FilePath [String]

The name of an executable with a list of arguments

The FilePath argument names the executable, and is interpreted according to the platform's standard policy for searching for executables. Specifically:

• on Unix systems the execvp(3) semantics is used, where if the executable filename does not contain a slash (/) then the PATH environment variable is searched for the executable.
• on Windows systems the Win32 CreateProcess semantics is used. Briefly: if the filename does not contain a path, then the directory containing the parent executable is searched, followed by the current directory, then some standard locations, and finally the current PATH. An .exe extension is added if the filename does not already have an extension. For full details see the documentation for the Windows SearchPath API.

Instances

Eq CmdSpec

Ord CmdSpec

Show CmdSpec

IsString CmdSpec

(Choice p, Applicative f) => AsRawCommand p f CmdSpec

(Choice p, Applicative f) => AsShellCommand p f CmdSpec

Applicative f => AsExecutableArguments (->) f CmdSpec

Applicative f => AsExecutableName (->) f CmdSpec

AsCmdSpec p f CmdSpec

class AsCmdSpec p f s where

Minimal complete definition

Nothing

Methods

_CmdSpec :: Optic' p f s CmdSpec

Instances

Functor f => AsCmdSpec (->) f CreateProcess

(Profunctor p, Functor f) => AsCmdSpec p f CmdSpec

AsCmdSpec p f CmdSpec

class AsExecutableName p f s where

Minimal complete definition

Nothing

Methods

_ExecutableName :: Optic' p f s FilePath

Instances

Applicative f => AsExecutableName (->) f CmdSpec

Applicative f => AsExecutableName (->) f CreateProcess

AsExecutableName p f FilePath

class AsExecutableArguments p f s where

Minimal complete definition

Nothing

Methods

_ExecutableArguments :: Optic' p f s [String]

Instances

Applicative f => AsExecutableArguments (->) f CmdSpec

Applicative f => AsExecutableArguments (->) f CreateProcess

AsExecutableArguments p f [String]

class AsShellCommand p f s where

Minimal complete definition

Nothing

Methods

_ShellCommand :: Optic' p f s String

Instances

Applicative f => AsShellCommand (->) f CreateProcess

(Choice p, Applicative f) => AsShellCommand p f CmdSpec

AsShellCommand p f String

class AsRawCommand p f s where

Minimal complete definition

Nothing

Methods

_RawCommand :: Optic' p f s (FilePath, [String])

Instances

Applicative f => AsRawCommand (->) f CreateProcess

(Choice p, Applicative f) => AsRawCommand p f CmdSpec

AsRawCommand p f (FilePath, [String])