//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
//
// Purpose: 
//
// $Workfile:     $
// $NoKeywords: $
//=============================================================================//
#ifndef VSTDLIB_ICOMMANDLINE_H
#define VSTDLIB_ICOMMANDLINE_H
#ifdef _WIN32
#pragma once
#endif

#include "vstdlib/vstdlib.h"


//-----------------------------------------------------------------------------
// Purpose: Interface to engine command line
//-----------------------------------------------------------------------------
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;
};


VSTDLIB_INTERFACE ICommandLine *CommandLine();

#endif // VSTDLIB_ICOMMANDLINE_H