/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").

Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#include "../idlib/precompiled.h"
#pragma hdrstop

idCVar* idCVar::staticVars = NULL;

extern idCVar net_allowCheats;

/*
===============================================================================

	idInternalCVar

===============================================================================
*/

class idInternalCVar : public idCVar
{
	friend class idCVarSystemLocal;
public:
	idInternalCVar();
	idInternalCVar( const char* newName, const char* newValue, int newFlags );
	idInternalCVar( const idCVar* cvar );
	virtual					~idInternalCVar();
	
	const char** 			CopyValueStrings( const char** strings );
	void					Update( const idCVar* cvar );
	void					UpdateValue();
	void					UpdateCheat();
	void					Set( const char* newValue, bool force, bool fromServer );
	void					Reset();
	
private:
	idStr					nameString;				// name
	idStr					resetString;			// resetting will change to this value
	idStr					valueString;			// value
	idStr					descriptionString;		// description
	
	virtual const char* 	InternalGetResetString() const;
	
	virtual void			InternalSetString( const char* newValue );
	virtual void			InternalServerSetString( const char* newValue );
	virtual void			InternalSetBool( const bool newValue );
	virtual void			InternalSetInteger( const int newValue );
	virtual void			InternalSetFloat( const float newValue );
};

/*
============
idInternalCVar::idInternalCVar
============
*/
idInternalCVar::idInternalCVar()
{
}

/*
============
idInternalCVar::idInternalCVar
============
*/
idInternalCVar::idInternalCVar( const char* newName, const char* newValue, int newFlags )
{
	nameString = newName;
	name = nameString.c_str();
	valueString = newValue;
	value = valueString.c_str();
	resetString = newValue;
	descriptionString = "";
	description = descriptionString.c_str();
	flags = ( newFlags & ~CVAR_STATIC ) | CVAR_MODIFIED;
	valueMin = 1;
	valueMax = -1;
	valueStrings = NULL;
	valueCompletion = 0;
	UpdateValue();
	UpdateCheat();
	internalVar = this;
}

/*
============
idInternalCVar::idInternalCVar
============
*/
idInternalCVar::idInternalCVar( const idCVar* cvar )
{
	nameString = cvar->GetName();
	name = nameString.c_str();
	valueString = cvar->GetString();
	value = valueString.c_str();
	resetString = cvar->GetString();
	descriptionString = cvar->GetDescription();
	description = descriptionString.c_str();
	flags = cvar->GetFlags() | CVAR_MODIFIED;
	valueMin = cvar->GetMinValue();
	valueMax = cvar->GetMaxValue();
	valueStrings = CopyValueStrings( cvar->GetValueStrings() );
	valueCompletion = cvar->GetValueCompletion();
	UpdateValue();
	UpdateCheat();
	internalVar = this;
}

/*
============
idInternalCVar::~idInternalCVar
============
*/
idInternalCVar::~idInternalCVar()
{
	Mem_Free( valueStrings );
	valueStrings = NULL;
}


/*
============
idInternalCVar::CopyValueStrings
============
*/
const char** idInternalCVar::CopyValueStrings( const char** strings )
{
	int i, totalLength;
	const char** ptr;
	char* str;
	
	if( !strings )
	{
		return NULL;
	}
	
	totalLength = 0;
	for( i = 0; strings[i] != NULL; i++ )
	{
		totalLength += idStr::Length( strings[i] ) + 1;
	}
	
	ptr = ( const char** ) Mem_Alloc( ( i + 1 ) * sizeof( char* ) + totalLength, TAG_CVAR );
	str = ( char* )( ( ( byte* )ptr ) + ( i + 1 ) * sizeof( char* ) );
	
	for( i = 0; strings[i] != NULL; i++ )
	{
		ptr[i] = str;
		strcpy( str, strings[i] );
		str += idStr::Length( strings[i] ) + 1;
	}
	ptr[i] = NULL;
	
	return ptr;
}

/*
============
idInternalCVar::Update
============
*/
void idInternalCVar::Update( const idCVar* cvar )
{

	// if this is a statically declared variable
	if( cvar->GetFlags() & CVAR_STATIC )
	{
	
		if( flags & CVAR_STATIC )
		{
		
			// the code has more than one static declaration of the same variable, make sure they have the same properties
			if( resetString.Icmp( cvar->GetString() ) != 0 )
			{
				common->Warning( "CVar '%s' declared multiple times with different initial value", nameString.c_str() );
			}
			if( ( flags & ( CVAR_BOOL | CVAR_INTEGER | CVAR_FLOAT ) ) != ( cvar->GetFlags() & ( CVAR_BOOL | CVAR_INTEGER | CVAR_FLOAT ) ) )
			{
				common->Warning( "CVar '%s' declared multiple times with different type", nameString.c_str() );
			}
			if( valueMin != cvar->GetMinValue() || valueMax != cvar->GetMaxValue() )
			{
				common->Warning( "CVar '%s' declared multiple times with different minimum/maximum", nameString.c_str() );
			}
			
		}
		
		// the code is now specifying a variable that the user already set a value for, take the new value as the reset value
		resetString = cvar->GetString();
		descriptionString = cvar->GetDescription();
		description = descriptionString.c_str();
		valueMin = cvar->GetMinValue();
		valueMax = cvar->GetMaxValue();
		Mem_Free( valueStrings );
		valueStrings = CopyValueStrings( cvar->GetValueStrings() );
		valueCompletion = cvar->GetValueCompletion();
		UpdateValue();
		cvarSystem->SetModifiedFlags( cvar->GetFlags() );
	}
	
	flags |= cvar->GetFlags();
	
	UpdateCheat();
	
	// only allow one non-empty reset string without a warning
	if( resetString.Length() == 0 )
	{
		resetString = cvar->GetString();
	}
	else if( cvar->GetString()[0] && resetString.Cmp( cvar->GetString() ) != 0 )
	{
		common->Warning( "cvar \"%s\" given initial values: \"%s\" and \"%s\"\n", nameString.c_str(), resetString.c_str(), cvar->GetString() );
	}
}

/*
============
idInternalCVar::UpdateValue
============
*/
void idInternalCVar::UpdateValue()
{
	bool clamped = false;
	
	if( flags & CVAR_BOOL )
	{
		integerValue = ( atoi( value ) != 0 );
		floatValue = integerValue;
		if( idStr::Icmp( value, "0" ) != 0 && idStr::Icmp( value, "1" ) != 0 )
		{
			valueString = idStr( ( bool )( integerValue != 0 ) );
			value = valueString.c_str();
		}
	}
	else if( flags & CVAR_INTEGER )
	{
		integerValue = ( int )atoi( value );
		if( valueMin < valueMax )
		{
			if( integerValue < valueMin )
			{
				integerValue = ( int )valueMin;
				clamped = true;
			}
			else if( integerValue > valueMax )
			{
				integerValue = ( int )valueMax;
				clamped = true;
			}
		}
		if( clamped || !idStr::IsNumeric( value ) || idStr::FindChar( value, '.' ) )
		{
			valueString = idStr( integerValue );
			value = valueString.c_str();
		}
		floatValue = ( float )integerValue;
	}
	else if( flags & CVAR_FLOAT )
	{
		floatValue = ( float )atof( value );
		if( valueMin < valueMax )
		{
			if( floatValue < valueMin )
			{
				floatValue = valueMin;
				clamped = true;
			}
			else if( floatValue > valueMax )
			{
				floatValue = valueMax;
				clamped = true;
			}
		}
		if( clamped || !idStr::IsNumeric( value ) )
		{
			valueString = idStr( floatValue );
			value = valueString.c_str();
		}
		integerValue = ( int )floatValue;
	}
	else
	{
		if( valueStrings && valueStrings[0] )
		{
			integerValue = 0;
			for( int i = 0; valueStrings[i]; i++ )
			{
				if( valueString.Icmp( valueStrings[i] ) == 0 )
				{
					integerValue = i;
					break;
				}
			}
			valueString = valueStrings[integerValue];
			value = valueString.c_str();
			floatValue = ( float )integerValue;
		}
		else if( valueString.Length() < 32 )
		{
			floatValue = ( float )atof( value );
			integerValue = ( int )floatValue;
		}
		else
		{
			floatValue = 0.0f;
			integerValue = 0;
		}
	}
}

/*
============
idInternalCVar::UpdateCheat
============
*/
void idInternalCVar::UpdateCheat()
{
	// all variables are considered cheats except for a few types
	if( flags & ( CVAR_NOCHEAT | CVAR_INIT | CVAR_ROM | CVAR_ARCHIVE | CVAR_SERVERINFO | CVAR_NETWORKSYNC ) )
	{
		flags &= ~CVAR_CHEAT;
	}
	else
	{
		flags |= CVAR_CHEAT;
	}
}

/*
============
idInternalCVar::Set
============
*/
void idInternalCVar::Set( const char* newValue, bool force, bool fromServer )
{
	if( common->IsMultiplayer() && !fromServer )
	{
#ifndef ID_TYPEINFO
		if( ( flags & CVAR_NETWORKSYNC ) && common->IsClient() )
		{
			common->Printf( "%s is a synced over the network and cannot be changed on a multiplayer client.\n", nameString.c_str() );
			return;
		}
#endif
		if( ( flags & CVAR_CHEAT ) && !net_allowCheats.GetBool() )
		{
			common->Printf( "%s cannot be changed in multiplayer.\n", nameString.c_str() );
			return;
		}
	}
	
	if( !newValue )
	{
		newValue = resetString.c_str();
	}
	
	if( !force )
	{
		if( flags & CVAR_ROM )
		{
			common->Printf( "%s is read only.\n", nameString.c_str() );
			return;
		}
		
		if( flags & CVAR_INIT )
		{
			common->Printf( "%s is write protected.\n", nameString.c_str() );
			return;
		}
	}
	
	if( valueString.Icmp( newValue ) == 0 )
	{
		return;
	}
	
	valueString = newValue;
	value = valueString.c_str();
	UpdateValue();
	
	SetModified();
	cvarSystem->SetModifiedFlags( flags );
}

/*
============
idInternalCVar::Reset
============
*/
void idInternalCVar::Reset()
{
	valueString = resetString;
	value = valueString.c_str();
	UpdateValue();
}

/*
============
idInternalCVar::InternalGetResetString
============
*/
const char* idInternalCVar::InternalGetResetString() const
{
	return resetString;
}

/*
============
idInternalCVar::InternalSetString
============
*/
void idInternalCVar::InternalSetString( const char* newValue )
{
	Set( newValue, true, false );
}

/*
===============
idInternalCVar::InternalServerSetString
===============
*/
void idInternalCVar::InternalServerSetString( const char* newValue )
{
	Set( newValue, true, true );
}

/*
============
idInternalCVar::InternalSetBool
============
*/
void idInternalCVar::InternalSetBool( const bool newValue )
{
	Set( idStr( newValue ), true, false );
}

/*
============
idInternalCVar::InternalSetInteger
============
*/
void idInternalCVar::InternalSetInteger( const int newValue )
{
	Set( idStr( newValue ), true, false );
}

/*
============
idInternalCVar::InternalSetFloat
============
*/
void idInternalCVar::InternalSetFloat( const float newValue )
{
	Set( idStr( newValue ), true, false );
}


/*
===============================================================================

	idCVarSystemLocal

===============================================================================
*/

class idCVarSystemLocal : public idCVarSystem
{
public:
	idCVarSystemLocal();
	
	virtual					~idCVarSystemLocal() {}
	
	virtual void			Init();
	virtual void			Shutdown();
	virtual bool			IsInitialized() const;
	
	virtual void			Register( idCVar* cvar );
	
	virtual idCVar* 		Find( const char* name );
	
	virtual void			SetCVarString( const char* name, const char* value, int flags = 0 );
	virtual void			SetCVarBool( const char* name, const bool value, int flags = 0 );
	virtual void			SetCVarInteger( const char* name, const int value, int flags = 0 );
	virtual void			SetCVarFloat( const char* name, const float value, int flags = 0 );
	
	virtual const char* 	GetCVarString( const char* name ) const;
	virtual bool			GetCVarBool( const char* name ) const;
	virtual int				GetCVarInteger( const char* name ) const;
	virtual float			GetCVarFloat( const char* name ) const;
	
	virtual bool			Command( const idCmdArgs& args );
	
	virtual void			CommandCompletion( void( *callback )( const char* s ) );
	virtual void			ArgCompletion( const char* cmdString, void( *callback )( const char* s ) );
	
	virtual void			SetModifiedFlags( int flags );
	virtual int				GetModifiedFlags() const;
	virtual void			ClearModifiedFlags( int flags );
	
	virtual void			ResetFlaggedVariables( int flags );
	virtual void			RemoveFlaggedAutoCompletion( int flags );
	virtual void			WriteFlaggedVariables( int flags, const char* setCmd, idFile* f ) const;
	
	virtual void			MoveCVarsToDict( int flags, idDict& dict, bool onlyModified ) const;
	virtual void			SetCVarsFromDict( const idDict& dict );
	
	void					RegisterInternal( idCVar* cvar );
	idInternalCVar* 		FindInternal( const char* name ) const;
	void					SetInternal( const char* name, const char* value, int flags );
	
private:
	bool					initialized;
	idList<idInternalCVar*, TAG_CVAR>	cvars;
	idHashIndex				cvarHash;
	int						modifiedFlags;
	
private:
	static void				Toggle_f( const idCmdArgs& args );
	static void				Set_f( const idCmdArgs& args );
	static void				Reset_f( const idCmdArgs& args );
	static void				ListByFlags( const idCmdArgs& args, cvarFlags_t flags );
	static void				List_f( const idCmdArgs& args );
	static void				Restart_f( const idCmdArgs& args );
	static void				CvarAdd_f( const idCmdArgs& args );
};

idCVarSystemLocal			localCVarSystem;
idCVarSystem* 				cvarSystem = &localCVarSystem;

#define NUM_COLUMNS				77		// 78 - 1
#define NUM_NAME_CHARS			33
#define NUM_DESCRIPTION_CHARS	( NUM_COLUMNS - NUM_NAME_CHARS )
#define FORMAT_STRING			"%-32s "

const char* CreateColumn( const char* text, int columnWidth, const char* indent, idStr& string )
{
	int i, lastLine;
	
	string.Clear();
	for( lastLine = i = 0; text[i] != '\0'; i++ )
	{
		if( i - lastLine >= columnWidth || text[i] == '\n' )
		{
			while( i > 0 && text[i] > ' ' && text[i] != '/' && text[i] != ',' && text[i] != '\\' )
			{
				i--;
			}
			while( lastLine < i )
			{
				string.Append( text[lastLine++] );
			}
			string.Append( indent );
			lastLine++;
		}
	}
	while( lastLine < i )
	{
		string.Append( text[lastLine++] );
	}
	return string.c_str();
}

/*
============
idCVarSystemLocal::FindInternal
============
*/
idInternalCVar* idCVarSystemLocal::FindInternal( const char* name ) const
{
	int hash = cvarHash.GenerateKey( name, false );
	for( int i = cvarHash.First( hash ); i != -1; i = cvarHash.Next( i ) )
	{
		if( cvars[i]->nameString.Icmp( name ) == 0 )
		{
			return cvars[i];
		}
	}
	return NULL;
}

/*
============
idCVarSystemLocal::SetInternal
============
*/
void idCVarSystemLocal::SetInternal( const char* name, const char* value, int flags )
{
	int hash;
	idInternalCVar* internal;
	
	internal = FindInternal( name );
	
	if( internal )
	{
		internal->InternalSetString( value );
		internal->flags |= flags & ~CVAR_STATIC;
		internal->UpdateCheat();
	}
	else
	{
		internal = new( TAG_SYSTEM ) idInternalCVar( name, value, flags );
		hash = cvarHash.GenerateKey( internal->nameString.c_str(), false );
		cvarHash.Add( hash, cvars.Append( internal ) );
	}
}

/*
============
idCVarSystemLocal::idCVarSystemLocal
============
*/
idCVarSystemLocal::idCVarSystemLocal()
{
	initialized = false;
	modifiedFlags = 0;
}

/*
============
idCVarSystemLocal::Init
============
*/
void idCVarSystemLocal::Init()
{

	modifiedFlags = 0;
	
	cmdSystem->AddCommand( "toggle", Toggle_f, CMD_FL_SYSTEM, "toggles a cvar" );
	cmdSystem->AddCommand( "set", Set_f, CMD_FL_SYSTEM, "sets a cvar" );
	cmdSystem->AddCommand( "seta", Set_f, CMD_FL_SYSTEM, "sets a cvar" );
	cmdSystem->AddCommand( "sets", Set_f, CMD_FL_SYSTEM, "sets a cvar" );
	cmdSystem->AddCommand( "sett", Set_f, CMD_FL_SYSTEM, "sets a cvar" );
	cmdSystem->AddCommand( "setu", Set_f, CMD_FL_SYSTEM, "sets a cvar" );
	cmdSystem->AddCommand( "reset", Reset_f, CMD_FL_SYSTEM, "resets a cvar" );
	cmdSystem->AddCommand( "listCvars", List_f, CMD_FL_SYSTEM, "lists cvars" );
	cmdSystem->AddCommand( "cvar_restart", Restart_f, CMD_FL_SYSTEM, "restart the cvar system" );
	cmdSystem->AddCommand( "cvarAdd", CvarAdd_f, CMD_FL_SYSTEM, "adds a value to a numeric cvar" );
	
	initialized = true;
}

/*
============
idCVarSystemLocal::Shutdown
============
*/
void idCVarSystemLocal::Shutdown()
{
	cvars.DeleteContents( true );
	cvarHash.Free();
	initialized = false;
}

/*
============
idCVarSystemLocal::IsInitialized
============
*/
bool idCVarSystemLocal::IsInitialized() const
{
	return initialized;
}

/*
============
idCVarSystemLocal::Register
============
*/
void idCVarSystemLocal::Register( idCVar* cvar )
{
	int hash;
	idInternalCVar* internal;
	
	cvar->SetInternalVar( cvar );
	
	internal = FindInternal( cvar->GetName() );
	
	if( internal )
	{
		internal->Update( cvar );
	}
	else
	{
		internal = new( TAG_SYSTEM ) idInternalCVar( cvar );
		hash = cvarHash.GenerateKey( internal->nameString.c_str(), false );
		cvarHash.Add( hash, cvars.Append( internal ) );
	}
	
	cvar->SetInternalVar( internal );
}

/*
============
idCVarSystemLocal::Find
============
*/
idCVar* idCVarSystemLocal::Find( const char* name )
{
	return FindInternal( name );
}

/*
============
idCVarSystemLocal::SetCVarString
============
*/
void idCVarSystemLocal::SetCVarString( const char* name, const char* value, int flags )
{
	SetInternal( name, value, flags );
}

/*
============
idCVarSystemLocal::SetCVarBool
============
*/
void idCVarSystemLocal::SetCVarBool( const char* name, const bool value, int flags )
{
	SetInternal( name, idStr( value ), flags );
}

/*
============
idCVarSystemLocal::SetCVarInteger
============
*/
void idCVarSystemLocal::SetCVarInteger( const char* name, const int value, int flags )
{
	SetInternal( name, idStr( value ), flags );
}

/*
============
idCVarSystemLocal::SetCVarFloat
============
*/
void idCVarSystemLocal::SetCVarFloat( const char* name, const float value, int flags )
{
	SetInternal( name, idStr( value ), flags );
}

/*
============
idCVarSystemLocal::GetCVarString
============
*/
const char* idCVarSystemLocal::GetCVarString( const char* name ) const
{
	idInternalCVar* internal = FindInternal( name );
	if( internal )
	{
		return internal->GetString();
	}
	return "";
}

/*
============
idCVarSystemLocal::GetCVarBool
============
*/
bool idCVarSystemLocal::GetCVarBool( const char* name ) const
{
	idInternalCVar* internal = FindInternal( name );
	if( internal )
	{
		return internal->GetBool();
	}
	return false;
}

/*
============
idCVarSystemLocal::GetCVarInteger
============
*/
int idCVarSystemLocal::GetCVarInteger( const char* name ) const
{
	idInternalCVar* internal = FindInternal( name );
	if( internal )
	{
		return internal->GetInteger();
	}
	return 0;
}

/*
============
idCVarSystemLocal::GetCVarFloat
============
*/
float idCVarSystemLocal::GetCVarFloat( const char* name ) const
{
	idInternalCVar* internal = FindInternal( name );
	if( internal )
	{
		return internal->GetFloat();
	}
	return 0.0f;
}

/*
============
idCVarSystemLocal::Command
============
*/
bool idCVarSystemLocal::Command( const idCmdArgs& args )
{
	idInternalCVar* internal;
	
	internal = FindInternal( args.Argv( 0 ) );
	
	if( internal == NULL )
	{
		return false;
	}
	
	if( args.Argc() == 1 )
	{
		// print the variable
		common->Printf( "\"%s\" is:\"%s\"" S_COLOR_WHITE " default:\"%s\"\n",
						internal->nameString.c_str(), internal->valueString.c_str(), internal->resetString.c_str() );
		if( idStr::Length( internal->GetDescription() ) > 0 )
		{
			common->Printf( S_COLOR_WHITE "%s\n", internal->GetDescription() );
		}
	}
	else
	{
		// set the value
		internal->Set( args.Args(), false, false );
	}
	return true;
}

/*
============
idCVarSystemLocal::CommandCompletion
============
*/
void idCVarSystemLocal::CommandCompletion( void( *callback )( const char* s ) )
{
	for( int i = 0; i < cvars.Num(); i++ )
	{
		callback( cvars[i]->GetName() );
	}
}

/*
============
idCVarSystemLocal::ArgCompletion
============
*/
void idCVarSystemLocal::ArgCompletion( const char* cmdString, void( *callback )( const char* s ) )
{
	idCmdArgs args;
	
	args.TokenizeString( cmdString, false );
	
	for( int i = 0; i < cvars.Num(); i++ )
	{
		if( !cvars[i]->valueCompletion )
		{
			continue;
		}
		if( idStr::Icmp( args.Argv( 0 ), cvars[i]->nameString.c_str() ) == 0 )
		{
			cvars[i]->valueCompletion( args, callback );
			break;
		}
	}
}

/*
============
idCVarSystemLocal::SetModifiedFlags
============
*/
void idCVarSystemLocal::SetModifiedFlags( int flags )
{
	modifiedFlags |= flags;
}

/*
============
idCVarSystemLocal::GetModifiedFlags
============
*/
int idCVarSystemLocal::GetModifiedFlags() const
{
	return modifiedFlags;
}

/*
============
idCVarSystemLocal::ClearModifiedFlags
============
*/
void idCVarSystemLocal::ClearModifiedFlags( int flags )
{
	modifiedFlags &= ~flags;
}

/*
============
idCVarSystemLocal::ResetFlaggedVariables
============
*/
void idCVarSystemLocal::ResetFlaggedVariables( int flags )
{
	for( int i = 0; i < cvars.Num(); i++ )
	{
		idInternalCVar* cvar = cvars[i];
		if( cvar->GetFlags() & flags )
		{
			cvar->Set( NULL, true, true );
		}
	}
}

/*
============
idCVarSystemLocal::RemoveFlaggedAutoCompletion
============
*/
void idCVarSystemLocal::RemoveFlaggedAutoCompletion( int flags )
{
	for( int i = 0; i < cvars.Num(); i++ )
	{
		idInternalCVar* cvar = cvars[i];
		if( cvar->GetFlags() & flags )
		{
			cvar->valueCompletion = NULL;
		}
	}
}

/*
============
idCVarSystemLocal::WriteFlaggedVariables

Appends lines containing "set variable value" for all variables
with the "flags" flag set to true.
============
*/
void idCVarSystemLocal::WriteFlaggedVariables( int flags, const char* setCmd, idFile* f ) const
{
	for( int i = 0; i < cvars.Num(); i++ )
	{
		idInternalCVar* cvar = cvars[i];
		if( cvar->GetFlags() & flags )
		{
			f->Printf( "%s %s \"%s\"\n", setCmd, cvar->GetName(), cvar->GetString() );
		}
	}
}

/*
============
idCVarSystemLocal::MoveCVarsToDict
============
*/
void idCVarSystemLocal::MoveCVarsToDict( int flags, idDict& dict, bool onlyModified ) const
{
	dict.Clear();
	for( int i = 0; i < cvars.Num(); i++ )
	{
		idCVar* cvar = cvars[i];
		if( cvar->GetFlags() & flags )
		{
			if( onlyModified && idStr::Icmp( cvar->GetString(), cvar->GetDefaultString() ) == 0 )
			{
				continue;
			}
			dict.Set( cvar->GetName(), cvar->GetString() );
		}
	}
}

/*
============
idCVarSystemLocal::SetCVarsFromDict
============
*/
void idCVarSystemLocal::SetCVarsFromDict( const idDict& dict )
{
	idInternalCVar* internal;
	
	for( int i = 0; i < dict.GetNumKeyVals(); i++ )
	{
		const idKeyValue* kv = dict.GetKeyVal( i );
		internal = FindInternal( kv->GetKey() );
		if( internal )
		{
			internal->InternalServerSetString( kv->GetValue() );
		}
	}
}

/*
============
idCVarSystemLocal::Toggle_f
============
*/
void idCVarSystemLocal::Toggle_f( const idCmdArgs& args )
{
	int argc, i;
	float current, set;
	const char* text;
	
	argc = args.Argc();
	if( argc < 2 )
	{
		common->Printf( "usage:\n"
						"   toggle <variable>  - toggles between 0 and 1\n"
						"   toggle <variable> <value> - toggles between 0 and <value>\n"
						"   toggle <variable> [string 1] [string 2]...[string n] - cycles through all strings\n" );
		return;
	}
	
	idInternalCVar* cvar = localCVarSystem.FindInternal( args.Argv( 1 ) );
	
	if( cvar == NULL )
	{
		common->Warning( "Toggle_f: cvar \"%s\" not found", args.Argv( 1 ) );
		return;
	}
	
	if( argc > 3 )
	{
		// cycle through multiple values
		text = cvar->GetString();
		for( i = 2; i < argc; i++ )
		{
			if( !idStr::Icmp( text, args.Argv( i ) ) )
			{
				// point to next value
				i++;
				break;
			}
		}
		if( i >= argc )
		{
			i = 2;
		}
		
		common->Printf( "set %s = %s\n", args.Argv( 1 ), args.Argv( i ) );
		cvar->Set( va( "%s", args.Argv( i ) ), false, false );
	}
	else
	{
		// toggle between 0 and 1
		current = cvar->GetFloat();
		if( argc == 3 )
		{
			set = atof( args.Argv( 2 ) );
		}
		else
		{
			set = 1.0f;
		}
		if( current == 0.0f )
		{
			current = set;
		}
		else
		{
			current = 0.0f;
		}
		common->Printf( "set %s = %f\n", args.Argv( 1 ), current );
		cvar->Set( idStr( current ), false, false );
	}
}

/*
============
idCVarSystemLocal::Set_f
============
*/
void idCVarSystemLocal::Set_f( const idCmdArgs& args )
{
	const char* str;
	
	str = args.Args( 2, args.Argc() - 1 );
	localCVarSystem.SetCVarString( args.Argv( 1 ), str );
}

/*
============
idCVarSystemLocal::Reset_f
============
*/
void idCVarSystemLocal::Reset_f( const idCmdArgs& args )
{
	idInternalCVar* cvar;
	
	if( args.Argc() != 2 )
	{
		common->Printf( "usage: reset <variable>\n" );
		return;
	}
	cvar = localCVarSystem.FindInternal( args.Argv( 1 ) );
	if( !cvar )
	{
		return;
	}
	
	cvar->Reset();
}

/*
============
idCVarSystemLocal::CvarAdd_f
============
*/
void idCVarSystemLocal::CvarAdd_f( const idCmdArgs& args )
{
	if( args.Argc() != 3 )
	{
		common->Printf( "usage: cvarAdd <variable> <value>\n" );
	}
	
	idInternalCVar* cvar = localCVarSystem.FindInternal( args.Argv( 1 ) );
	if( !cvar )
	{
		return;
	}
	
	const float newValue = cvar->GetFloat() + atof( args.Argv( 2 ) );
	cvar->SetFloat( newValue );
	common->Printf( "%s = %f\n", cvar->GetName(), newValue );
}
//
///*
//================================================
//idSort_CommandDef
//================================================
//*/
//class idSort_InternalCVar : public idSort_Quick< const idInternalCVar *, idSort_InternalCVar > {
//public:
//	int Compare( const idInternalCVar * & a, const idInternalCVar * & b ) const { return idStr::Icmp( a.GetName(), b.GetName() ); }
//};

void idCVarSystemLocal::ListByFlags( const idCmdArgs& args, cvarFlags_t flags )
{
	int i, argNum;
	idStr match, indent, string;
	const idInternalCVar* cvar;
	idList<const idInternalCVar*, TAG_CVAR>cvarList;
	
	enum
	{
		SHOW_VALUE,
		SHOW_DESCRIPTION,
		SHOW_TYPE,
		SHOW_FLAGS
	} show;
	
	argNum = 1;
	show = SHOW_VALUE;
	
	if( idStr::Icmp( args.Argv( argNum ), "-" ) == 0 || idStr::Icmp( args.Argv( argNum ), "/" ) == 0 )
	{
		if( idStr::Icmp( args.Argv( argNum + 1 ), "help" ) == 0 || idStr::Icmp( args.Argv( argNum + 1 ), "?" ) == 0 )
		{
			argNum = 3;
			show = SHOW_DESCRIPTION;
		}
		else if( idStr::Icmp( args.Argv( argNum + 1 ), "type" ) == 0 || idStr::Icmp( args.Argv( argNum + 1 ), "range" ) == 0 )
		{
			argNum = 3;
			show = SHOW_TYPE;
		}
		else if( idStr::Icmp( args.Argv( argNum + 1 ), "flags" ) == 0 )
		{
			argNum = 3;
			show = SHOW_FLAGS;
		}
	}
	
	if( args.Argc() > argNum )
	{
		match = args.Args( argNum, -1 );
		match.Replace( " ", "" );
	}
	else
	{
		match = "";
	}
	
	for( i = 0; i < localCVarSystem.cvars.Num(); i++ )
	{
		cvar = localCVarSystem.cvars[i];
		
		if( !( cvar->GetFlags() & flags ) )
		{
			continue;
		}
		
		if( match.Length() && !cvar->nameString.Filter( match, false ) )
		{
			continue;
		}
		
		cvarList.Append( cvar );
	}
	
	//cvarList.SortWithTemplate( idSort_InternalCVar() );
	
	switch( show )
	{
		case SHOW_VALUE:
		{
			for( i = 0; i < cvarList.Num(); i++ )
			{
				cvar = cvarList[i];
				common->Printf( FORMAT_STRING S_COLOR_WHITE "\"%s\"\n", cvar->nameString.c_str(), cvar->valueString.c_str() );
			}
			break;
		}
		case SHOW_DESCRIPTION:
		{
			indent.Fill( ' ', NUM_NAME_CHARS );
			indent.Insert( "\n", 0 );
			
			for( i = 0; i < cvarList.Num(); i++ )
			{
				cvar = cvarList[i];
				common->Printf( FORMAT_STRING S_COLOR_WHITE "%s\n", cvar->nameString.c_str(), CreateColumn( cvar->GetDescription(), NUM_DESCRIPTION_CHARS, indent, string ) );
			}
			break;
		}
		case SHOW_TYPE:
		{
			for( i = 0; i < cvarList.Num(); i++ )
			{
				cvar = cvarList[i];
				if( cvar->GetFlags() & CVAR_BOOL )
				{
					common->Printf( FORMAT_STRING S_COLOR_CYAN "bool\n", cvar->GetName() );
				}
				else if( cvar->GetFlags() & CVAR_INTEGER )
				{
					if( cvar->GetMinValue() < cvar->GetMaxValue() )
					{
						common->Printf( FORMAT_STRING S_COLOR_GREEN "int " S_COLOR_WHITE "[%d, %d]\n", cvar->GetName(), ( int ) cvar->GetMinValue(), ( int ) cvar->GetMaxValue() );
					}
					else
					{
						common->Printf( FORMAT_STRING S_COLOR_GREEN "int\n", cvar->GetName() );
					}
				}
				else if( cvar->GetFlags() & CVAR_FLOAT )
				{
					if( cvar->GetMinValue() < cvar->GetMaxValue() )
					{
						common->Printf( FORMAT_STRING S_COLOR_RED "float " S_COLOR_WHITE "[%s, %s]\n", cvar->GetName(), idStr( cvar->GetMinValue() ).c_str(), idStr( cvar->GetMaxValue() ).c_str() );
					}
					else
					{
						common->Printf( FORMAT_STRING S_COLOR_RED "float\n", cvar->GetName() );
					}
				}
				else if( cvar->GetValueStrings() )
				{
					common->Printf( FORMAT_STRING S_COLOR_WHITE "string " S_COLOR_WHITE "[", cvar->GetName() );
					for( int j = 0; cvar->GetValueStrings()[j] != NULL; j++ )
					{
						if( j )
						{
							common->Printf( S_COLOR_WHITE ", %s", cvar->GetValueStrings()[j] );
						}
						else
						{
							common->Printf( S_COLOR_WHITE "%s", cvar->GetValueStrings()[j] );
						}
					}
					common->Printf( S_COLOR_WHITE "]\n" );
				}
				else
				{
					common->Printf( FORMAT_STRING S_COLOR_WHITE "string\n", cvar->GetName() );
				}
			}
			break;
		}
		case SHOW_FLAGS:
		{
			for( i = 0; i < cvarList.Num(); i++ )
			{
				cvar = cvarList[i];
				common->Printf( FORMAT_STRING, cvar->GetName() );
				string = "";
				if( cvar->GetFlags() & CVAR_BOOL )
				{
					string += S_COLOR_CYAN "B ";
				}
				else if( cvar->GetFlags() & CVAR_INTEGER )
				{
					string += S_COLOR_GREEN "I ";
				}
				else if( cvar->GetFlags() & CVAR_FLOAT )
				{
					string += S_COLOR_RED "F ";
				}
				else
				{
					string += S_COLOR_WHITE "S ";
				}
				if( cvar->GetFlags() & CVAR_SYSTEM )
				{
					string += S_COLOR_WHITE "SYS  ";
				}
				else if( cvar->GetFlags() & CVAR_RENDERER )
				{
					string += S_COLOR_WHITE "RNDR ";
				}
				else if( cvar->GetFlags() & CVAR_SOUND )
				{
					string += S_COLOR_WHITE "SND  ";
				}
				else if( cvar->GetFlags() & CVAR_GUI )
				{
					string += S_COLOR_WHITE "GUI  ";
				}
				else if( cvar->GetFlags() & CVAR_GAME )
				{
					string += S_COLOR_WHITE "GAME ";
				}
				else if( cvar->GetFlags() & CVAR_TOOL )
				{
					string += S_COLOR_WHITE "TOOL ";
				}
				else
				{
					string += S_COLOR_WHITE "     ";
				}
				string += ( cvar->GetFlags() & CVAR_SERVERINFO ) ?	"SI "	: "   ";
				string += ( cvar->GetFlags() & CVAR_STATIC ) ?		"ST "	: "   ";
				string += ( cvar->GetFlags() & CVAR_CHEAT ) ?		"CH "	: "   ";
				string += ( cvar->GetFlags() & CVAR_INIT ) ?		"IN "	: "   ";
				string += ( cvar->GetFlags() & CVAR_ROM ) ?			"RO "	: "   ";
				string += ( cvar->GetFlags() & CVAR_ARCHIVE ) ?		"AR "	: "   ";
				string += ( cvar->GetFlags() & CVAR_MODIFIED ) ?	"MO "	: "   ";
				string += "\n";
				common->Printf( string );
			}
			break;
		}
	}
	
	common->Printf( "\n%i cvars listed\n\n", cvarList.Num() );
	common->Printf(	"listCvar [search string]          = list cvar values\n"
					"listCvar -help [search string]    = list cvar descriptions\n"
					"listCvar -type [search string]    = list cvar types\n"
					"listCvar -flags [search string]   = list cvar flags\n" );
}

/*
============
idCVarSystemLocal::List_f
============
*/
void idCVarSystemLocal::List_f( const idCmdArgs& args )
{
	ListByFlags( args, CVAR_ALL );
}

/*
============
idCVarSystemLocal::Restart_f
============
*/
void idCVarSystemLocal::Restart_f( const idCmdArgs& args )
{
	int i, hash;
	idInternalCVar* cvar;
	
	for( i = 0; i < localCVarSystem.cvars.Num(); i++ )
	{
		cvar = localCVarSystem.cvars[i];
		
		// don't mess with rom values
		if( cvar->flags & ( CVAR_ROM | CVAR_INIT ) )
		{
			continue;
		}
		
		// throw out any variables the user created
		if( !( cvar->flags & CVAR_STATIC ) )
		{
			hash = localCVarSystem.cvarHash.GenerateKey( cvar->nameString, false );
			delete cvar;
			localCVarSystem.cvars.RemoveIndex( i );
			localCVarSystem.cvarHash.RemoveIndex( hash, i );
			i--;
			continue;
		}
		
		cvar->Reset();
	}
}