The command arguments parser base class. More...

#include <murl_util_environment.h>

Detailed Description

The command arguments parser base class.

To create and register command arguments, you must derive from the base class and implement Init() e.g.:

class MyEnvironment : public Util::Environment
{
public:
    const SwitchParameter* mMySwitchParam;
    const StringArrayParameter* mMyFilesParam;
 
protected:
    virtual void Init()
    {
        mMySwitchParam = Register<SwitchParameter>(PARAMETER_TYPE_OPTIONAL, "switch", "s", "Enable My Switch");
        mMyFilesParam = Register<StringArrayParameter>(PARAMETER_TYPE_MANDATORY, "file", "f", "Specify files(s)");
    }
};

To get the command arguments simply call Create(), e.g. assuming an instance mMyEnvironment exists:

if (!mMyEnvironment.Create(argC, argV))
{
    System::Console::Print(mEnvironment.GetUsage());
    return false;
}
if (mMyEnvironment.mMySwitchParam->mValue)
{
    // parameter --switch or -s was specified
}
for (UInt32 i = 0; i < mMyEnvironment.mMyFilesParam->mValue.GetCount(); i++)
{
    // parameter --file or -f was specified, e.g. -f aFile1 -f aFile2 --file aFile3
    mMyEnvironment.mMyFilesParam->mValue[i];    // get the file name string
}

Classes
class	ColorParameter
	The color parameter class. More...

class	DoubleArrayParameter
	The floating point array parameter class. More...

class	DoubleParameter
	The floating point parameter class. More...

class	EnumArrayParameter
	The enumeration array parameter template class. More...

class	EnumParameter
	The enumeration parameter template class. More...

class	Parameter
	The parameter base class. More...

class	SInt32ArrayParameter
	The integer array parameter class. More...

class	SInt32Parameter
	The integer parameter class. More...

class	StringArrayParameter
	The string array parameter class. More...

class	StringListArrayParameter
	The string list array parameter class. More...

class	StringPairArrayParameter
	The string pair array parameter class. More...

class	StringParameter
	The string parameter class. More...

class	SwitchParameter
	The boolean parameter class. More...

Public Member Functions
	Environment ()
	The default constructor.

virtual	~Environment ()
	The destructor.

virtual Bool	Create (SInt32 argC, const char **argV)
	Initialize and parse the command arguments. More...

virtual Bool	Create (SInt32 argC, char **argV)
	Forward to Create(SInt32 argC, const char** argV). More...

virtual Bool	Create (const StringArray &args)
	Initialize and parse the command arguments. More...

const StringArray &	GetFreeParameters () const
	Get the free parameters string array. More...

virtual Bool	Validate ()
	Check if all mandatory parameters are set. More...

virtual String	GetUsage () const
	Get the usage string of all registered parameters. More...

virtual const String &	GetLastError () const
	Get the last error parameter. More...

Protected Types
enum	ParameterType { PARAMETER_TYPE_MANDATORY, PARAMETER_TYPE_OPTIONAL }
	Definition of the parameter types. More...

Protected Member Functions
virtual void	Init ()=0
	Overload to initialize and register parameters.

virtual void	DeInit ()
	Overload to de-initialize, default implementation is empty.

template<class ParamType >
const ParamType *	Register (ParamType *param)
	Register a new allocated parameter object. More...

virtual Bool	ParseParameters (SInt32 argC, const char **argV)
	Parse the command arguments and convert the argument values into the corresponding registered parameter objects. More...

void	SetAcceptFreeParameters (Bool accept, ParameterType type)
	Set the free parameters acceptance. More...

template<class ParamType >
const ParamType *	Register (ParameterType type, const String &longId, const String &shortId, const String &description)
	Create and register a parameter class. More...

template<class ParamType , class DataType >
const ParamType *	Register (ParameterType type, const String &longId, const String &shortId, const String &description, const DataType &defaultValue)
	Create and register a parameter class with a default value. More...

template<class ParamType , class EnumType >
const ParamType *	Register (ParameterType type, const String &longId, const String &shortId, const String &description, const Enum< EnumType > &enumClass)
	Create and register an enumeration parameter class. More...

template<class ParamType , class EnumType >
const ParamType *	Register (ParameterType type, const String &longId, const String &shortId, const String &description, const Enum< EnumType > &enumClass, EnumType defaultValue)
	Create and register an enumeration parameter class with a default value. More...

Protected Attributes
Array< Parameter::AutoPtr >	mParameters
	The registered parameter objects.

Bool	mAcceptFreeParameters
	The accept free parameters, default false.

ParameterType	mFreeParametersType
	The free parameters type, default PARAMETER_TYPE_OPTIONAL.

StringArray	mFreeParameters
	The free parameters.

String	mLastError
	The last error parameter.

Member Enumeration Documentation

◆ ParameterType

enum Murl::Util::Environment::ParameterType

protected

Definition of the parameter types.

Enumerator
PARAMETER_TYPE_MANDATORY	The mandatory parameter type.
PARAMETER_TYPE_OPTIONAL	The optional parameter type.

Member Function Documentation

◆ Create() [1/3]

virtual Bool Murl::Util::Environment::Create	(	SInt32	argC,
		const char **	argV
	)

virtual

Initialize and parse the command arguments.

Calls DeInit(), deletes all registered parameters, calls Init() and ParseParameters().

Parameters

argC	The number of arguments.
argV	The argument string values.

Returns: false if ParseParameters() failed, otherwise the result from IsValid() is returned.

◆ Create() [2/3]

virtual Bool Murl::Util::Environment::Create	(	SInt32	argC,
		char **	argV
	)

virtual

Forward to Create(SInt32 argC, const char** argV).

Parameters

argC	The number of arguments.
argV	The argument string values.

Returns: false if ParseParameters() failed, otherwise the result from IsValid() is returned.

◆ Create() [3/3]

virtual Bool Murl::Util::Environment::Create ( const StringArray & args )

virtual

Initialize and parse the command arguments.

See Create(SInt32 argC, const char** argV).

Parameters

args	A string array containing the arguments.

Returns: false if ParseParameters() failed, otherwise the result from IsValid() is returned.

◆ GetFreeParameters()

const StringArray& Murl::Util::Environment::GetFreeParameters ( ) const

Get the free parameters string array.

Free parameters are parameters which have no leading '-' option, e.g. a list of file names. To accept this kind of parameters SetAcceptFreeParameters() must be called before Create() or during Init().

Returns: The free parameters string array.

◆ Validate()

virtual Bool Murl::Util::Environment::Validate ( )

virtual

Check if all mandatory parameters are set.

Returns: true if all mandatory parameters are set.

◆ GetUsage()

virtual String Murl::Util::Environment::GetUsage ( ) const

virtual

Get the usage string of all registered parameters.

Returns: The usage string of all registered parameters.

◆ GetLastError()

virtual const String& Murl::Util::Environment::GetLastError ( ) const

virtual

Get the last error parameter.

Returns: The last error parameter string.

◆ Register() [1/5]

template<class ParamType >

const ParamType* Murl::Util::Environment::Register ( ParamType * param )

inlineprotected

Register a new allocated parameter object.

All registered parameter objects are deleted automatically at environment class destruction or when calling Create().

Parameters

param The new allocated parameter object.

Returns: The registered parameter object.

◆ ParseParameters()

virtual Bool Murl::Util::Environment::ParseParameters	(	SInt32	argC,
		const char **	argV
	)

protectedvirtual

Parse the command arguments and convert the argument values into the corresponding registered parameter objects.

Parameters

argC	The number of arguments.
argV	The argument string values.

Returns: true if successful.

◆ SetAcceptFreeParameters()

void Murl::Util::Environment::SetAcceptFreeParameters	(	Bool	accept,
		ParameterType	type
	)

protected

Set the free parameters acceptance.

Free parameters are parameters which have no leading '-' option, e.g. a list of file names. To accept this kind of parameters this method must be called before Create() or during Init().
Use GetFreeParameters() to read the parameters after parsing.

Parameters

accept	true to accept free parameters.
type	The type of the parameter.

◆ Register() [2/5]

template<class ParamType >

const ParamType* Murl::Util::Environment::Register	(	ParameterType	type,
		const String &	longId,
		const String &	shortId,
		const String &	description
	)

inlineprotected

Create and register a parameter class.

Parameters

type	The type of the parameter.
longId	The long parameter identifier string.
shortId	The short parameter identifier string.
description	The parameter description string.

Template Parameters

ParamType The parameter class type to create.

Returns: The registered parameter object.

◆ Register() [3/5]

template<class ParamType , class DataType >

const ParamType* Murl::Util::Environment::Register	(	ParameterType	type,
		const String &	longId,
		const String &	shortId,
		const String &	description,
		const DataType &	defaultValue
	)

inlineprotected

Create and register a parameter class with a default value.

Parameters

type	The type of the parameter.
longId	The long parameter identifier string.
shortId	The short parameter identifier string.
description	The parameter description string.
defaultValue	The parameter default value.

Template Parameters

ParamType	The parameter class type to create.
DataType	The default value class type.

Returns: The registered parameter object.

◆ Register() [4/5]

template<class ParamType , class EnumType >

const ParamType* Murl::Util::Environment::Register	(	ParameterType	type,
		const String &	longId,
		const String &	shortId,
		const String &	description,
		const Enum< EnumType > &	enumClass
	)

inlineprotected

Create and register an enumeration parameter class.

Parameters

type	The type of the parameter.
longId	The long parameter identifier string.
shortId	The short parameter identifier string.
description	The parameter description string.
enumClass	The enumeration string mapping class.

Template Parameters

ParamType	The parameter class type to create.
EnumType	The enumeration class type.

Returns: The registered parameter object.

◆ Register() [5/5]

template<class ParamType , class EnumType >

const ParamType* Murl::Util::Environment::Register	(	ParameterType	type,
		const String &	longId,
		const String &	shortId,
		const String &	description,
		const Enum< EnumType > &	enumClass,
		EnumType	defaultValue
	)

inlineprotected

Create and register an enumeration parameter class with a default value.

Parameters

type	The type of the parameter.
longId	The long parameter identifier string.
shortId	The short parameter identifier string.
description	The parameter description string.
enumClass	The enumeration string mapping class.
defaultValue	The parameter default value.

Template Parameters

ParamType	The parameter class type to create.
EnumType	The enumeration class type.

Returns: The registered parameter object.

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

murl_util_environment.h

Detailed Description

Classes

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Member Enumeration Documentation

◆ ParameterType

Member Function Documentation

◆ Create() [1/3]

◆ Create() [2/3]

◆ Create() [3/3]

◆ GetFreeParameters()

◆ Validate()

◆ GetUsage()

◆ GetLastError()

◆ Register() [1/5]

◆ ParseParameters()

◆ SetAcceptFreeParameters()

◆ Register() [2/5]

◆ Register() [3/5]

◆ Register() [4/5]

◆ Register() [5/5]