#include <CommandLine.h>

Public Member Functions
	CommandLine ()=default

	CommandLine (const AZStd::string &commandLine)

void	GetValue (const char paramName, const char defaultValue, AZStd::string *outResult) const

void	GetValue (const char paramName, const char defaultValue, AZStd::string &outResult) const

int32	GetValueAsInt (const char *paramName, int32 defaultValue) const

float	GetValueAsFloat (const char *paramName, float defaultValue) const

bool	GetValueAsBool (const char *paramName, bool defaultValue) const

AZ::Vector3	GetValueAsVector3 (const char *paramName, const AZ::Vector3 &defaultValue) const

AZ::Vector4	GetValueAsVector4 (const char *paramName, const AZ::Vector4 &defaultValue) const

void	GetValue (const char paramName, Command command, AZStd::string *outResult) const

void	GetValue (const char paramName, Command command, AZStd::string &outResult) const

const AZStd::string &	GetValue (const char paramName, Command command) const

AZ::Outcome< AZStd::string >	GetValueIfExists (const char paramName, Command command) const

int32	GetValueAsInt (const char paramName, Command command) const

float	GetValueAsFloat (const char paramName, Command command) const

bool	GetValueAsBool (const char paramName, Command command) const

AZ::Vector3	GetValueAsVector3 (const char paramName, Command command) const

AZ::Vector4	GetValueAsVector4 (const char paramName, Command command) const

size_t	GetNumParameters () const

const AZStd::string &	GetParameterName (size_t nr) const

const AZStd::string &	GetParameterValue (size_t nr) const

size_t	FindParameterIndex (const char *paramName) const

bool	CheckIfHasValue (const char *paramName) const

bool	CheckIfHasParameter (const char *paramName) const

bool	CheckIfHasParameter (const AZStd::string &paramName) const

void	SetCommandLine (const AZStd::string &commandLine)

void	Log (const char *debugName="") const

Detailed Description

A command line parser class. This class makes it very easy to parse values from a command/argument line. An example of a command line would be "-fullscreen true -xres 800 -yres 1024 -threshold 0.145 -culling false". All parameters must have a value. Use the GetValue, GetValueAsInt, GetValueAsFloat and GetValueAsBool methods to quickly extract values for any given parameter in the command line. A parameter here is for example "xres" or "yres". Each parameter can have a value associated with it.

Constructor & Destructor Documentation

◆ CommandLine() [1/2]

MCore::CommandLine::CommandLine ( )

default

The default constructor. This does not yet process any command line. You have to use the SetCommandLine method to specify the command line to parse.

◆ CommandLine() [2/2]

MCore::CommandLine::CommandLine ( const AZStd::string & commandLine )

explicit

The extended constructor.

Parameters

commandLine The command line to parse. This automatically calls the SetCommandLine function.

Member Function Documentation

◆ CheckIfHasParameter()

bool MCore::CommandLine::CheckIfHasParameter ( const char * paramName ) const

Check if the command line contains any parameter with a specified name. The parameter name is not case sensitive.

Parameters

paramName The parameter name to check.

◆ CheckIfHasValue()

bool MCore::CommandLine::CheckIfHasValue ( const char * paramName ) const

Check whether a given parameter has a value specified or not. A value is not specified for parameter that have been defined like "-fullscreen -xres 800 -yres 600". In this example command line, the parameter "fullscreen" has no value. Both "xres" and "yres" parameters have values set. The parameter name is not case sensitive.

Parameters

paramName The parameter name to check.

◆ FindParameterIndex()

size_t MCore::CommandLine::FindParameterIndex ( const char * paramName ) const

Find the parameter index for a parameter with a specific name. The parameter name is not case sensitive.

Parameters

paramName The name of the parameter to search for.

Returns: The index/number of the parameter, or MCORE_INVALIDINDEX32 when no parameter with the specific name has been found.

◆ GetNumParameters()

size_t MCore::CommandLine::GetNumParameters ( ) const

Get the number of parameters that have been detected from the command line string that has been passed to the extended constructor or to the SetCommandLine function.

Returns: The number of parameters that have been detected.

◆ GetParameterName()

const AZStd::string& MCore::CommandLine::GetParameterName ( size_t nr ) const

Get the name of a given parameter.

Parameters

nr	The parameter number, which must be in range of [0 .. GetNumParameters()-1].

Returns: The name of the parameter.

◆ GetParameterValue()

const AZStd::string& MCore::CommandLine::GetParameterValue ( size_t nr ) const

Get the value for a given parameter.

Parameters

nr	The parameter number, which must be in range of [0 .. GetNumParameters()-1].

Returns: The value of the parameter, or "" (an empty string) when no value has been specified.

◆ GetValue() [1/2]

void MCore::CommandLine::GetValue	(	const char *	paramName,
		Command *	command,
		AZStd::string *	outResult
	)		const

Get the value for a parameter with a specified name. If the parameter with the given name does not exist, the default value is returned. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "XRES".
command	The command to retrieve the default value from (using the command syntax). Returns an empty string if the command syntax can't help.
outResult	The string that will contain the resulting value. This is not allowed to be nullptr.

◆ GetValue() [2/2]

void MCore::CommandLine::GetValue	(	const char *	paramName,
		const char *	defaultValue,
		AZStd::string *	outResult
	)		const

Get the value for a parameter with a specified name. If the parameter with the given name does not exist, the default value is returned. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "XRES".
defaultValue	The default value to return in case there is no such parameter with the given name, or if its value has not been specified.
outResult	The resulting value for the parameter. This is NOT allowed to be nullptr.

Returns: The value for the parameter with the specified name.

◆ GetValueAsBool() [1/2]

bool MCore::CommandLine::GetValueAsBool	(	const char *	paramName,
		bool	defaultValue
	)		const

Get the value for a parameter with a specified name, as a boolean. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, true will be returned! This allows you to make command lines such as "-fullscreen -xres 800 -yres 600", where fullscreen has no value. However, since the parameter fullscreen exists, this most likely means it is a mode that needs to be enabled, so this is why true is being returned in such case. Now you can do things such as:

bool fullScreen = commandLine.GetValueAsBool("FullScreen", false);

Now when "-fullscreen" is not specified, false is returned. But when it has been specified, but without value, true is being used. It is also possible to specify "-fullscreen true" or "-fullscreen 1". The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "XRES".
defaultValue	The default value to return in case there is no such parameter with the given name, or if its value has not been specified.

Returns: The value for the parameter with the specified name.

◆ GetValueAsBool() [2/2]

bool MCore::CommandLine::GetValueAsBool	(	const char *	paramName,
		Command *	command
	)		const

Get the value for a parameter with a specified name, as a boolean. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, true will be returned! This allows you to make command lines such as "-fullscreen -xres 800 -yres 600", where fullscreen has no value. However, since the parameter fullscreen exists, this most likely means it is a mode that needs to be enabled, so this is why true is being returned in such case. Now you can do things such as:

bool fullScreen = commandLine.GetValueAsBool("FullScreen", false);

Now when "-fullscreen" is not specified, false is returned. But when it has been specified, but without value, true is being used. It is also possible to specify "-fullscreen true" or "-fullscreen 1". The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "XRES".
command	The command to retrieve the default value from (using the command syntax). Returns false if the command syntax can't help.

Returns: The value for the parameter with the specified name.

◆ GetValueAsFloat() [1/2]

float MCore::CommandLine::GetValueAsFloat	(	const char *	paramName,
		Command *	command
	)		const

Get the value for a parameter with a specified name, as a floating point value. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "THRESHOLD".
command	The command to retrieve the default value from (using the command syntax). Returns 0.0 if the command syntax can't help.

Returns: The value for the parameter with the specified name.

◆ GetValueAsFloat() [2/2]

float MCore::CommandLine::GetValueAsFloat	(	const char *	paramName,
		float	defaultValue
	)		const

Get the value for a parameter with a specified name, as a floating point value. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "THRESHOLD".
defaultValue	The default value to return in case there is no such parameter with the given name, or if its value has not been specified.

Returns: The value for the parameter with the specified name.

◆ GetValueAsInt() [1/2]

int32 MCore::CommandLine::GetValueAsInt	(	const char *	paramName,
		Command *	command
	)		const

Get the value for a parameter with a specified name, as an integer value. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "XRES".
command	The command to retrieve the default value from (using the command syntax). Returns MCORE_INVALIDINDEX32 if the command syntax can't help.

Returns: The value for the parameter with the specified name.

◆ GetValueAsInt() [2/2]

int32 MCore::CommandLine::GetValueAsInt	(	const char *	paramName,
		int32	defaultValue
	)		const

Get the value for a parameter with a specified name, as an integer value. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "XRES".
defaultValue	The default value to return in case there is no such parameter with the given name, or if its value has not been specified.

Returns: The value for the parameter with the specified name.

◆ GetValueAsVector3() [1/2]

AZ::Vector3 MCore::CommandLine::GetValueAsVector3	(	const char *	paramName,
		Command *	command
	)		const

Get the value for a parameter with a specified name, as a three component vector. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "THRESHOLD".
command	The command to retrieve the default value from (using the command syntax). Returns a zero vector if the command syntax can't help.

Returns: The value for the parameter with the specified name.

◆ GetValueAsVector3() [2/2]

AZ::Vector3 MCore::CommandLine::GetValueAsVector3	(	const char *	paramName,
		const AZ::Vector3 &	defaultValue
	)		const

Get the value for a parameter with a specified name, as a three component vector. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "THRESHOLD".
defaultValue	The default value to return in case there is no such parameter with the given name, or if its value has not been specified.

Returns: The value for the parameter with the specified name.

◆ GetValueAsVector4() [1/2]

AZ::Vector4 MCore::CommandLine::GetValueAsVector4	(	const char *	paramName,
		Command *	command
	)		const

Get the value for a parameter with a specified name, as a four component vector. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "THRESHOLD".
command	The command to retrieve the default value from (using the command syntax). Returns a zero vector if the command syntax can't help.

Returns: The value for the parameter with the specified name.

◆ GetValueAsVector4() [2/2]

AZ::Vector4 MCore::CommandLine::GetValueAsVector4	(	const char *	paramName,
		const AZ::Vector4 &	defaultValue
	)		const

Get the value for a parameter with a specified name, as a four component vector. If the parameter with the given name does not exist, the default value is returned. If the parameter value exists, but the value specified is empty, the default value is returned as well. The parameter name is not case sensitive.

Parameters

paramName	The name of the parameter to get the value for, for example this can be "THRESHOLD".
defaultValue	The default value to return in case there is no such parameter with the given name, or if its value has not been specified.

Returns: The value for the parameter with the specified name.

◆ Log()

void MCore::CommandLine::Log ( const char * debugName = "" ) const

Logs the contents using MCore::LogInfo. This is useful for debugging sometimes.

Parameters

debugName The name of this command line, to make it easier to identify this command line when logging multiple ones.

◆ SetCommandLine()

void MCore::CommandLine::SetCommandLine ( const AZStd::string & commandLine )

Specify the command line string that needs to be parsed. The extended constructor, which takes a command line string as parameter already automatically calls this method. Before you can use any other methods of this class, you should make a call to this function. The command line string can be something like "-fullscreen -xres 800 -yres 1024 -threshold 0.145 -culling false".

Parameters

commandLine The command line string to parse.

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

Gems/EMotionFX/Code/MCore/Source/CommandLine.h

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ CommandLine() [1/2]

◆ CommandLine() [2/2]

Member Function Documentation

◆ CheckIfHasParameter()

◆ CheckIfHasValue()

◆ FindParameterIndex()

◆ GetNumParameters()

◆ GetParameterName()

◆ GetParameterValue()

◆ GetValue() [1/2]

◆ GetValue() [2/2]

◆ GetValueAsBool() [1/2]

◆ GetValueAsBool() [2/2]

◆ GetValueAsFloat() [1/2]

◆ GetValueAsFloat() [2/2]

◆ GetValueAsInt() [1/2]

◆ GetValueAsInt() [2/2]

◆ GetValueAsVector3() [1/2]

◆ GetValueAsVector3() [2/2]

◆ GetValueAsVector4() [1/2]

◆ GetValueAsVector4() [2/2]

◆ Log()

◆ SetCommandLine()