nix::ExternalCommand Class Reference

#include <args.hh>

Inheritance diagram for nix::ExternalCommand:

Public Member Functions
	ExternalCommand (AsyncIoRoot &aio, std::filesystem::path absoluteBinaryPath)
virtual bool	processFlag (Strings::iterator &pos, Strings::iterator end) override
virtual bool	processArgs (const Strings &args, bool finish) override
virtual void	run () override
virtual std::optional< ExperimentalFeature >	experimentalFeature () override
virtual Category	category () override
virtual AsyncIoRoot &	aio () override
Public Member Functions inherited from nix::Args
virtual std::string	description ()
virtual bool	forceImpureByDefault ()
virtual std::string	doc ()
void	addFlag (Flag &&flag)
void	removeFlag (const std::string &longName)
void	expectArgs (ExpectedArg &&arg)
void	expectArg (const std::string &label, std::string *dest, bool optional=false)
void	expectArgs (const std::string &label, std::vector< std::string > *dest)
virtual JSON	toJSON ()
RootArgs &	getRoot ()

Public Attributes
std::filesystem::path	absoluteBinaryPath
Public Attributes inherited from nix::Args
MultiCommand *	parent = nullptr

Static Public Attributes
static constexpr std::string_view	lixExternalPrefix = "lix-"
Static Public Attributes inherited from nix::Command
static constexpr Category	catDefault = 0
static constexpr Category	catCustom = 1000
Static Public Attributes inherited from nix::Args
static CompleterFun	completePath
static CompleterFun	completeDir

Additional Inherited Members
Public Types inherited from nix::Command
typedef int	Category
Protected Types inherited from nix::Args
typedef void	CompleterFun(AddCompletions &, size_t, std::string_view)
typedef std::function< CompleterFun >	CompleterClosure
Protected Member Functions inherited from nix::Args
virtual Strings::iterator	rewriteArgs (Strings &args, Strings::iterator pos)
virtual void	initialFlagsProcessed ()
virtual std::optional< std::reference_wrapper< RootArgs > >	asRootArgs ()
Protected Attributes inherited from nix::Args
std::map< std::string, Flag::ptr >	longFlags
std::map< char, Flag::ptr >	shortFlags
std::list< ExpectedArg >	expectedArgs
std::list< ExpectedArg >	processedArgs
std::set< std::string >	hiddenCategories
Static Protected Attributes inherited from nix::Args
static const size_t	ArityAny = std::numeric_limits<size_t>::max()

Detailed Description

An external command wrapper which is represented by a external binary. i.e. lix-flakes.

Member Function Documentation

aio()

virtual AsyncIoRoot & nix::ExternalCommand::aio ( )

inlineoverridevirtual

Implements nix::Args.

category()

virtual Category nix::ExternalCommand::category ( )

inlineoverridevirtual

Reimplemented from nix::Command.

experimentalFeature()

virtual std::optional< ExperimentalFeature > nix::ExternalCommand::experimentalFeature ( )

inlineoverridevirtual

Reimplemented from nix::Command.

processArgs()

bool nix::ExternalCommand::processArgs ( const Strings & args, bool finish )

overridevirtual

Process some positional arugments

Parameters

finish

We have parsed everything else, and these are the only arguments left. Used because we accumulate some "pending args" we might have left over.

Returns

true if the passed arguments were fully consumed and no further processing is required, false if the passed arguments should be processed with more context.

Reimplemented from nix::Args.

processFlag()

bool nix::ExternalCommand::processFlag ( Strings::iterator & pos, Strings::iterator end )

overridevirtual

Process a single flag and its arguments, pulling from an iterator of raw CLI args as needed.

Returns

false if the flag is not recognised.

Reimplemented from nix::Args.

run()

void nix::ExternalCommand::run ( )

overridevirtual

Entry point to the command

Implements nix::Command.

---

The documentation for this class was generated from the following files:

• lix/libutil/args.hh
• lix/libutil/args.cc