710 lines
22 KiB
C++
710 lines
22 KiB
C++
//===== Copyright © 1996-2005, Valve Corporation, All rights reserved. ======//
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//
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// Purpose:
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//
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// $Workfile: $
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// $Date: $
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//
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//-----------------------------------------------------------------------------
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// $NoKeywords: $
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//===========================================================================//
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#ifndef CONVAR_H
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#define CONVAR_H
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#if _WIN32
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#pragma once
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#endif
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#include "tier0/dbg.h"
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#include "tier1/iconvar.h"
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#include "tier1/utlvector.h"
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#include "tier1/utlstring.h"
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#include "icvar.h"
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#ifdef _WIN32
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#define FORCEINLINE_CVAR FORCEINLINE
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#elif defined _LINUX || defined __APPLE__
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#define FORCEINLINE_CVAR inline
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#else
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#error "implement me"
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#endif
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class ConVar;
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class CCommand;
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class ConCommand;
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class ConCommandBase;
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struct characterset_t;
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//-----------------------------------------------------------------------------
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// Any executable that wants to use ConVars need to implement one of
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// these to hook up access to console variables.
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//-----------------------------------------------------------------------------
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class IConCommandBaseAccessor
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{
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public:
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// Flags is a combination of FCVAR flags in cvar.h.
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// hOut is filled in with a handle to the variable.
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virtual bool RegisterConCommandBase( ConCommandBase *pVar ) = 0;
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};
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//-----------------------------------------------------------------------------
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// Helper method for console development
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//-----------------------------------------------------------------------------
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#if defined( _X360 ) && !defined( _RETAIL )
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void ConVar_PublishToVXConsole();
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#endif
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//-----------------------------------------------------------------------------
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// Called when a ConCommand needs to execute
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//-----------------------------------------------------------------------------
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typedef void ( *FnCommandCallbackV1_t )( void );
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typedef void ( *FnCommandCallback_t )( const CCommand &command );
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#define COMMAND_COMPLETION_MAXITEMS 64
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#define COMMAND_COMPLETION_ITEM_LENGTH 64
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//-----------------------------------------------------------------------------
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// Returns 0 to COMMAND_COMPLETION_MAXITEMS worth of completion strings
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//-----------------------------------------------------------------------------
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typedef int ( *FnCommandCompletionCallback )( const char *partial, char commands[ COMMAND_COMPLETION_MAXITEMS ][ COMMAND_COMPLETION_ITEM_LENGTH ] );
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//-----------------------------------------------------------------------------
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// Interface version
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//-----------------------------------------------------------------------------
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class ICommandCallback
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{
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public:
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virtual void CommandCallback( const CCommand &command ) = 0;
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};
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class ICommandCompletionCallback
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{
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public:
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virtual int CommandCompletionCallback( const char *pPartial, CUtlVector< CUtlString > &commands ) = 0;
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};
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//-----------------------------------------------------------------------------
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// Purpose: The base console invoked command/cvar interface
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//-----------------------------------------------------------------------------
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class ConCommandBase
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{
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friend class CCvar;
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friend class ConVar;
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friend class ConCommand;
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friend void ConVar_Register( int nCVarFlag, IConCommandBaseAccessor *pAccessor );
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friend void ConVar_PublishToVXConsole();
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// FIXME: Remove when ConVar changes are done
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friend class CDefaultCvar;
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public:
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ConCommandBase( void );
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ConCommandBase( const char *pName, const char *pHelpString = 0,
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int flags = 0 );
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virtual ~ConCommandBase( void );
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virtual bool IsCommand( void ) const;
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// Check flag
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virtual bool IsFlagSet( int flag ) const;
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// Set flag
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virtual void AddFlags( int flags );
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// Return name of cvar
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virtual const char *GetName( void ) const;
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// Return help text for cvar
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virtual const char *GetHelpText( void ) const;
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// Deal with next pointer
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const ConCommandBase *GetNext( void ) const;
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ConCommandBase *GetNext( void );
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void SetNext(ConCommandBase *pBase)
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{
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m_pNext = pBase;
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}
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virtual bool IsRegistered( void ) const;
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// Returns the DLL identifier
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virtual CVarDLLIdentifier_t GetDLLIdentifier() const;
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protected:
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virtual void Create( const char *pName, const char *pHelpString = 0,
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int flags = 0 );
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// Used internally by OneTimeInit to initialize/shutdown
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virtual void Init();
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void Shutdown();
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// Internal copy routine ( uses new operator from correct module )
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char *CopyString( const char *from );
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private:
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// Next ConVar in chain
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// Prior to register, it points to the next convar in the DLL.
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// Once registered, though, m_pNext is reset to point to the next
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// convar in the global list
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ConCommandBase *m_pNext;
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// Has the cvar been added to the global list?
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bool m_bRegistered;
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// Static data
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const char *m_pszName;
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const char *m_pszHelpString;
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// ConVar flags
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int m_nFlags;
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protected:
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// ConVars add themselves to this list for the executable.
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// Then ConVar_Register runs through all the console variables
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// and registers them into a global list stored in vstdlib.dll
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static ConCommandBase *s_pConCommandBases;
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// ConVars in this executable use this 'global' to access values.
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static IConCommandBaseAccessor *s_pAccessor;
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public: // Hackalicous
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inline int GetFlags() const
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{
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return m_nFlags;
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}
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inline void SetFlags(int flags)
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{
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m_nFlags = flags;
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}
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};
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//-----------------------------------------------------------------------------
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// Command tokenizer
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//-----------------------------------------------------------------------------
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class CCommand
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{
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public:
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CCommand();
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CCommand( int nArgC, const char **ppArgV );
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bool Tokenize( const char *pCommand, characterset_t *pBreakSet = NULL );
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void Reset();
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int ArgC() const;
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const char **ArgV() const;
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const char *ArgS() const; // All args that occur after the 0th arg, in string form
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const char *GetCommandString() const; // The entire command in string form, including the 0th arg
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const char *operator[]( int nIndex ) const; // Gets at arguments
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const char *Arg( int nIndex ) const; // Gets at arguments
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// Helper functions to parse arguments to commands.
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const char* FindArg( const char *pName ) const;
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int FindArgInt( const char *pName, int nDefaultVal ) const;
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static int MaxCommandLength();
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static characterset_t* DefaultBreakSet();
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private:
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enum
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{
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COMMAND_MAX_ARGC = 64,
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COMMAND_MAX_LENGTH = 512,
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};
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int m_nArgc;
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int m_nArgv0Size;
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char m_pArgSBuffer[ COMMAND_MAX_LENGTH ];
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char m_pArgvBuffer[ COMMAND_MAX_LENGTH ];
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const char* m_ppArgv[ COMMAND_MAX_ARGC ];
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};
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inline int CCommand::MaxCommandLength()
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{
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return COMMAND_MAX_LENGTH - 1;
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}
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inline int CCommand::ArgC() const
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{
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return m_nArgc;
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}
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inline const char **CCommand::ArgV() const
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{
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return m_nArgc ? (const char**)m_ppArgv : NULL;
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}
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inline const char *CCommand::ArgS() const
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{
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return m_nArgv0Size ? &m_pArgSBuffer[m_nArgv0Size] : "";
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}
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inline const char *CCommand::GetCommandString() const
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{
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return m_nArgc ? m_pArgSBuffer : "";
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}
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inline const char *CCommand::Arg( int nIndex ) const
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{
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// FIXME: Many command handlers appear to not be particularly careful
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// about checking for valid argc range. For now, we're going to
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// do the extra check and return an empty string if it's out of range
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if ( nIndex < 0 || nIndex >= m_nArgc )
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return "";
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return m_ppArgv[nIndex];
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}
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inline const char *CCommand::operator[]( int nIndex ) const
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{
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return Arg( nIndex );
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}
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//-----------------------------------------------------------------------------
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// Purpose: The console invoked command
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//-----------------------------------------------------------------------------
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class ConCommand : public ConCommandBase
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{
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friend class CCvar;
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public:
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typedef ConCommandBase BaseClass;
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ConCommand( const char *pName, FnCommandCallbackV1_t callback,
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const char *pHelpString = 0, int flags = 0, FnCommandCompletionCallback completionFunc = 0 );
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ConCommand( const char *pName, FnCommandCallback_t callback,
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const char *pHelpString = 0, int flags = 0, FnCommandCompletionCallback completionFunc = 0 );
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ConCommand( const char *pName, ICommandCallback *pCallback,
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const char *pHelpString = 0, int flags = 0, ICommandCompletionCallback *pCommandCompletionCallback = 0 );
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virtual ~ConCommand( void );
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virtual bool IsCommand( void ) const;
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virtual int AutoCompleteSuggest( const char *partial, CUtlVector< CUtlString > &commands );
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virtual bool CanAutoComplete( void );
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// Invoke the function
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virtual void Dispatch( const CCommand &command );
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private:
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// NOTE: To maintain backward compat, we have to be very careful:
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// All public virtual methods must appear in the same order always
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// since engine code will be calling into this code, which *does not match*
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// in the mod code; it's using slightly different, but compatible versions
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// of this class. Also: Be very careful about adding new fields to this class.
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// Those fields will not exist in the version of this class that is instanced
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// in mod code.
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// Call this function when executing the command
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union
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{
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FnCommandCallbackV1_t m_fnCommandCallbackV1;
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FnCommandCallback_t m_fnCommandCallback;
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ICommandCallback *m_pCommandCallback;
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};
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union
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{
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FnCommandCompletionCallback m_fnCompletionCallback;
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ICommandCompletionCallback *m_pCommandCompletionCallback;
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};
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bool m_bHasCompletionCallback : 1;
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bool m_bUsingNewCommandCallback : 1;
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bool m_bUsingCommandCallbackInterface : 1;
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public: // Hackalicous
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inline FnCommandCallback_t GetCallback() const
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{
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return m_fnCommandCallback;
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}
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};
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//-----------------------------------------------------------------------------
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// Purpose: A console variable
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//-----------------------------------------------------------------------------
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class ConVar : public ConCommandBase, public IConVar
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{
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friend class CCvar;
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friend class ConVarRef;
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public:
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typedef ConCommandBase BaseClass;
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ConVar( const char *pName, const char *pDefaultValue, int flags = 0);
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ConVar( const char *pName, const char *pDefaultValue, int flags,
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const char *pHelpString );
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ConVar( const char *pName, const char *pDefaultValue, int flags,
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const char *pHelpString, bool bMin, float fMin, bool bMax, float fMax );
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ConVar( const char *pName, const char *pDefaultValue, int flags,
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const char *pHelpString, FnChangeCallback_t callback );
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ConVar( const char *pName, const char *pDefaultValue, int flags,
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const char *pHelpString, bool bMin, float fMin, bool bMax, float fMax,
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FnChangeCallback_t callback );
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virtual ~ConVar( void );
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virtual bool IsFlagSet( int flag ) const;
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virtual const char* GetHelpText( void ) const;
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virtual bool IsRegistered( void ) const;
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virtual const char *GetName( void ) const;
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virtual void AddFlags( int flags );
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virtual bool IsCommand( void ) const;
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// Install a change callback (there shouldn't already be one....)
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void InstallChangeCallback( FnChangeCallback_t callback );
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// Retrieve value
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FORCEINLINE_CVAR float GetFloat( void ) const;
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FORCEINLINE_CVAR int GetInt( void ) const;
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FORCEINLINE_CVAR bool GetBool() const { return !!GetInt(); }
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FORCEINLINE_CVAR char const *GetString( void ) const;
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// Any function that allocates/frees memory needs to be virtual or else you'll have crashes
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// from alloc/free across dll/exe boundaries.
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// These just call into the IConCommandBaseAccessor to check flags and set the var (which ends up calling InternalSetValue).
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virtual void SetValue( const char *value );
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virtual void SetValue( float value );
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virtual void SetValue( int value );
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// Reset to default value
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void Revert( void );
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// True if it has a min/max setting
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bool GetMin( float& minVal ) const;
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bool GetMax( float& maxVal ) const;
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const char *GetDefault( void ) const;
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private:
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// Called by CCvar when the value of a var is changing.
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virtual void InternalSetValue(const char *value);
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// For CVARs marked FCVAR_NEVER_AS_STRING
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virtual void InternalSetFloatValue( float fNewValue );
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virtual void InternalSetIntValue( int nValue );
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virtual bool ClampValue( float& value );
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virtual void ChangeStringValue( const char *tempVal, float flOldValue );
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virtual void Create( const char *pName, const char *pDefaultValue, int flags = 0,
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const char *pHelpString = 0, bool bMin = false, float fMin = 0.0,
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bool bMax = false, float fMax = false, FnChangeCallback_t callback = 0 );
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// Used internally by OneTimeInit to initialize.
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virtual void Init();
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private:
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// This either points to "this" or it points to the original declaration of a ConVar.
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// This allows ConVars to exist in separate modules, and they all use the first one to be declared.
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// m_pParent->m_pParent must equal m_pParent (ie: m_pParent must be the root, or original, ConVar).
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ConVar *m_pParent;
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// Static data
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const char *m_pszDefaultValue;
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// Value
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// Dynamically allocated
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char *m_pszString;
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int m_StringLength;
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// Values
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float m_fValue;
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int m_nValue;
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// Min/Max values
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bool m_bHasMin;
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float m_fMinVal;
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bool m_bHasMax;
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float m_fMaxVal;
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// Call this function when ConVar changes
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FnChangeCallback_t m_fnChangeCallback;
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public: // Hackalicous
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inline FnChangeCallback_t GetCallback() const
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{
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return m_fnChangeCallback;
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}
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inline void SetMin(bool set, float min=0.0)
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{
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m_bHasMin = set;
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m_fMinVal = min;
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}
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inline void SetMax(bool set, float max=0.0)
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{
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m_bHasMax = set;
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m_fMaxVal = max;
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}
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};
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//-----------------------------------------------------------------------------
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// Purpose: Return ConVar value as a float
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// Output : float
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR float ConVar::GetFloat( void ) const
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{
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return m_pParent->m_fValue;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Return ConVar value as an int
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// Output : int
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR int ConVar::GetInt( void ) const
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{
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return m_pParent->m_nValue;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Return ConVar value as a string, return "" for bogus string pointer, etc.
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// Output : const char *
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR const char *ConVar::GetString( void ) const
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{
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if ( m_nFlags & FCVAR_NEVER_AS_STRING )
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return "FCVAR_NEVER_AS_STRING";
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return ( m_pParent->m_pszString ) ? m_pParent->m_pszString : "";
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}
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//-----------------------------------------------------------------------------
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// Used to read/write convars that already exist (replaces the FindVar method)
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//-----------------------------------------------------------------------------
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class ConVarRef
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{
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public:
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ConVarRef( const char *pName );
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ConVarRef( const char *pName, bool bIgnoreMissing );
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ConVarRef( IConVar *pConVar );
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void Init( const char *pName, bool bIgnoreMissing );
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bool IsValid() const;
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bool IsFlagSet( int nFlags ) const;
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IConVar *GetLinkedConVar();
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// Get/Set value
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float GetFloat( void ) const;
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int GetInt( void ) const;
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bool GetBool() const { return !!GetInt(); }
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const char *GetString( void ) const;
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void SetValue( const char *pValue );
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void SetValue( float flValue );
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void SetValue( int nValue );
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void SetValue( bool bValue );
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const char *GetName() const;
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const char *GetDefault() const;
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private:
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// High-speed method to read convar data
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IConVar *m_pConVar;
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ConVar *m_pConVarState;
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};
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//-----------------------------------------------------------------------------
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// Did we find an existing convar of that name?
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR bool ConVarRef::IsFlagSet( int nFlags ) const
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{
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return ( m_pConVar->IsFlagSet( nFlags ) != 0 );
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}
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FORCEINLINE_CVAR IConVar *ConVarRef::GetLinkedConVar()
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{
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return m_pConVar;
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}
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FORCEINLINE_CVAR const char *ConVarRef::GetName() const
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{
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return m_pConVar->GetName();
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}
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//-----------------------------------------------------------------------------
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// Purpose: Return ConVar value as a float
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR float ConVarRef::GetFloat( void ) const
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{
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return m_pConVarState->m_fValue;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Return ConVar value as an int
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR int ConVarRef::GetInt( void ) const
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{
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return m_pConVarState->m_nValue;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Return ConVar value as a string, return "" for bogus string pointer, etc.
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//-----------------------------------------------------------------------------
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FORCEINLINE_CVAR const char *ConVarRef::GetString( void ) const
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{
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Assert( !IsFlagSet( FCVAR_NEVER_AS_STRING ) );
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return m_pConVarState->m_pszString;
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}
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FORCEINLINE_CVAR void ConVarRef::SetValue( const char *pValue )
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{
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m_pConVar->SetValue( pValue );
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}
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FORCEINLINE_CVAR void ConVarRef::SetValue( float flValue )
|
|
{
|
|
m_pConVar->SetValue( flValue );
|
|
}
|
|
|
|
FORCEINLINE_CVAR void ConVarRef::SetValue( int nValue )
|
|
{
|
|
m_pConVar->SetValue( nValue );
|
|
}
|
|
|
|
FORCEINLINE_CVAR void ConVarRef::SetValue( bool bValue )
|
|
{
|
|
m_pConVar->SetValue( bValue ? 1 : 0 );
|
|
}
|
|
|
|
FORCEINLINE_CVAR const char *ConVarRef::GetDefault() const
|
|
{
|
|
return m_pConVarState->m_pszDefaultValue;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Called by the framework to register ConCommands with the ICVar
|
|
//-----------------------------------------------------------------------------
|
|
void ConVar_Register( int nCVarFlag = 0, IConCommandBaseAccessor *pAccessor = NULL );
|
|
void ConVar_Unregister( );
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Utility methods
|
|
//-----------------------------------------------------------------------------
|
|
void ConVar_PrintFlags( const ConCommandBase *var );
|
|
void ConVar_PrintDescription( const ConCommandBase *pVar );
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Utility class to quickly allow ConCommands to call member methods
|
|
//-----------------------------------------------------------------------------
|
|
#if defined _MSC_VER
|
|
#pragma warning (disable : 4355 )
|
|
#endif
|
|
|
|
template< class T >
|
|
class CConCommandMemberAccessor : public ConCommand, public ICommandCallback, public ICommandCompletionCallback
|
|
{
|
|
typedef ConCommand BaseClass;
|
|
typedef void ( T::*FnMemberCommandCallback_t )( const CCommand &command );
|
|
typedef int ( T::*FnMemberCommandCompletionCallback_t )( const char *pPartial, CUtlVector< CUtlString > &commands );
|
|
|
|
public:
|
|
CConCommandMemberAccessor( T* pOwner, const char *pName, FnMemberCommandCallback_t callback, const char *pHelpString = 0,
|
|
int flags = 0, FnMemberCommandCompletionCallback_t completionFunc = 0 ) :
|
|
BaseClass( pName, this, pHelpString, flags, ( completionFunc != 0 ) ? this : NULL )
|
|
{
|
|
m_pOwner = pOwner;
|
|
m_Func = callback;
|
|
m_CompletionFunc = completionFunc;
|
|
}
|
|
|
|
~CConCommandMemberAccessor()
|
|
{
|
|
Shutdown();
|
|
}
|
|
|
|
void SetOwner( T* pOwner )
|
|
{
|
|
m_pOwner = pOwner;
|
|
}
|
|
|
|
virtual void CommandCallback( const CCommand &command )
|
|
{
|
|
Assert( m_pOwner && m_Func );
|
|
(m_pOwner->*m_Func)( command );
|
|
}
|
|
|
|
virtual int CommandCompletionCallback( const char *pPartial, CUtlVector< CUtlString > &commands )
|
|
{
|
|
Assert( m_pOwner && m_CompletionFunc );
|
|
return (m_pOwner->*m_CompletionFunc)( pPartial, commands );
|
|
}
|
|
|
|
private:
|
|
T* m_pOwner;
|
|
FnMemberCommandCallback_t m_Func;
|
|
FnMemberCommandCompletionCallback_t m_CompletionFunc;
|
|
};
|
|
|
|
#if defined _MSC_VER
|
|
#pragma warning ( default : 4355 )
|
|
#endif
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Utility macros to quicky generate a simple console command
|
|
//-----------------------------------------------------------------------------
|
|
#define CON_COMMAND( name, description ) \
|
|
static void name( const CCommand &args ); \
|
|
static ConCommand name##_command( #name, name, description ); \
|
|
static void name( const CCommand &args )
|
|
|
|
#define CON_COMMAND_F( name, description, flags ) \
|
|
static void name( const CCommand &args ); \
|
|
static ConCommand name##_command( #name, name, description, flags ); \
|
|
static void name( const CCommand &args )
|
|
|
|
#define CON_COMMAND_F_COMPLETION( name, description, flags, completion ) \
|
|
static void name( const CCommand &args ); \
|
|
static ConCommand name##_command( #name, name, description, flags, completion ); \
|
|
static void name( const CCommand &args )
|
|
|
|
#define CON_COMMAND_EXTERN( name, _funcname, description ) \
|
|
void _funcname( const CCommand &args ); \
|
|
static ConCommand name##_command( #name, _funcname, description ); \
|
|
void _funcname( const CCommand &args )
|
|
|
|
#define CON_COMMAND_EXTERN_F( name, _funcname, description, flags ) \
|
|
void _funcname( const CCommand &args ); \
|
|
static ConCommand name##_command( #name, _funcname, description, flags ); \
|
|
void _funcname( const CCommand &args )
|
|
|
|
#define CON_COMMAND_MEMBER_F( _thisclass, name, _funcname, description, flags ) \
|
|
void _funcname( const CCommand &args ); \
|
|
friend class CCommandMemberInitializer_##_funcname; \
|
|
class CCommandMemberInitializer_##_funcname \
|
|
{ \
|
|
public: \
|
|
CCommandMemberInitializer_##_funcname() : m_ConCommandAccessor( NULL, name, &_thisclass::_funcname, description, flags ) \
|
|
{ \
|
|
m_ConCommandAccessor.SetOwner( GET_OUTER( _thisclass, m_##_funcname##_register ) ); \
|
|
} \
|
|
private: \
|
|
CConCommandMemberAccessor< _thisclass > m_ConCommandAccessor; \
|
|
}; \
|
|
\
|
|
CCommandMemberInitializer_##_funcname m_##_funcname##_register; \
|
|
|
|
|
|
#endif // CONVAR_H
|