#ifndef _INCLUDE_VALVE_COMMAND_LINE_H_
#define _INCLUDE_VALVE_COMMAND_LINE_H_

class ICommandLine
{
public:
	virtual void		CreateCmdLine( const char *commandline ) = 0;
	virtual void		CreateCmdLine( int argc, char **argv ) = 0;
	virtual const char	*GetCmdLine( void ) const = 0;

	// Check whether a particular parameter exists
	virtual	const char	*CheckParm( const char *psz, const char **ppszValue = 0 ) const = 0;
	virtual void		RemoveParm( const char *parm ) = 0;
	virtual void		AppendParm( const char *pszParm, const char *pszValues ) = 0;

	// Returns the argument after the one specified, or the default if not found
	virtual const char	*ParmValue( const char *psz, const char *pDefaultVal = 0 ) const = 0;
	virtual int			ParmValue( const char *psz, int nDefaultVal ) const = 0;
	virtual float		ParmValue( const char *psz, float flDefaultVal ) const = 0;

	// Gets at particular parameters
	virtual int			ParmCount() const = 0;
	virtual int			FindParm( const char *psz ) const = 0;	// Returns 0 if not found.
	virtual const char* GetParm( int nIndex ) const = 0;
};

#endif /* _INCLUDE_VALVE_COMMAND_LINE_H_ */