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clntxres.h：源码内容
							/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 
#ifndef _clntxres_h
#define _clntres_h
#include "hxtypes.h"
#include "chxdataf.h"
#include "hxpeff.h"
#include "hxunicod.h"
#include "hxxres.h"
#include "hxplugn.h"
#include "hxcomm.h"
#include "hxstring.h"
#include "hxslist.h"
#include "baseobj.h"
/* CONSTANTS */
#define kDefaultCacheLimit      1024*8          // 8KB
/* STRUCTURES */
/* RESOURCE STRUCTURES  */
/* INTERNAL STRUCTURES */
typedef struct  _HX_IMAGE_RESOURCE_DIRECTORY
{
	ULONG32         Characteristics;
	ULONG32         TimeDateStamp;
	UINT16          MajorVersion;
	UINT16          MinorVersion;
	UINT16          NumberOfNamedEntries;
	UINT16          NumberOfIdEntries;
} HX_IMAGE_RESOURCE_DIRECTORY, *PHX_IMAGE_RESOURCE_DIRECTORY;
typedef struct _HX_IMAGE_RESOURCE_DIRECTORY_ENTRY
{
	ULONG32         Name;
	ULONG32         OffsetToData;
} HX_IMAGE_RESOURCE_DIRECTORY_ENTRY, *PHX_IMAGE_RESOURCE_DIRECTORY_ENTRY;
typedef struct  _HX_IMAGE_RESOURCE_DATA_ENTRY
{
	ULONG32         OffsetToData;
	ULONG32         Size;
	ULONG32         CodePage;
	ULONG32         Reserved;
} HX_IMAGE_RESOURCE_DATA_ENTRY, *PHX_IMAGE_RESOURCE_DATA_ENTRY;
/*
This structure is used to create a map of all the resources, id's and their location in the file.
*/
typedef struct tagXResCacheEntry
{
	ULONG32 type;                   // Resource type;
	ULONG32 id;                             // Resource ID;
	ULONG32 location;               // Location in file from, offset from the beginning of the file.
	ULONG32 language;               // Language of the data.
	ULONG32 size;                   // size of the data. 
	BOOL    cached;                 // Is the resource already cached in memory?
	UCHAR*  cached_data;    // Data of the resource when cached in memory.
} XResCacheEntry;
class   CHXSimpleList;
class   CHXXResource;
class   CHXXResFile : public IHXPlugin,
		      public IHXXResFile, 
		      public CHXPeff, 
		      public CHXUnicode,
		      public CHXBaseCountingObject
{
public:
	// IUnknown methods...
	STDMETHOD(QueryInterface) (THIS_ REFIID riid, void **ppvObj);
	STDMETHOD_(ULONG32, AddRef) (THIS);
	STDMETHOD_(ULONG32, Release) (THIS);
	// IHXPlugin methods...
	STDMETHOD(GetPluginInfo)    (THIS_
				    REF(BOOL)	 /*OUT*/ bMultipleLoad,
				    REF(const char*) /*OUT*/ pDescription,
				    REF(const char*) /*OUT*/ pCopyright,
				    REF(const char*) /*OUT*/ pMoreInfoURL,
				    REF(ULONG32)	 /*OUT*/ ulVersionNumber);
	STDMETHOD(InitPlugin)	    (THIS_
				    IUnknown*   /*IN*/  pContext);
	//
	//      CHXXResFile Methods
	//
	CHXXResFile();
	STDMETHOD_(HX_RESULT,Open)			(THIS_ const char* path);
	STDMETHOD_(HX_RESULT,Close)			(THIS);
	
	STDMETHOD_(HX_RESULT,SetLanguage)               (THIS_ ULONG32 id);
	STDMETHOD_(HX_RESULT,GetResource)               (THIS_ ULONG32 type, ULONG32 ID, IHXXResource** resource);
			
	STDMETHOD_(IHXXResource*,GetString)            (THIS_ ULONG32 ID);	
	STDMETHOD_(IHXXResource*,GetBitmap)            (THIS_ ULONG32 ID);
	STDMETHOD_(IHXXResource*,GetDialog)            (THIS_ ULONG32 ID);
	STDMETHOD_(IHXXResource*,GetVersionInfo)	(THIS);
	STDMETHOD(GetFirstResourceLanguage)		(THIS_ REF(ULONG32) ulLangID);
	STDMETHOD(GetNextResourceLanguage)		(THIS_ REF(ULONG32) ulLangID);
	STDMETHOD_(BOOL,IncludesShortName)		(THIS_ const char* pShortName);
	
	STDMETHOD_(HX_RESULT,FlushCache)                (THIS);
	STDMETHOD_(HX_RESULT,SetCacheLimit)             (THIS_ ULONG32 MaxCachedData);
	STDMETHOD(UseResourceFile)			(THIS_
			 				INT16   /*IN*/  nResourceFileRef);
		
private:
	virtual ~CHXXResFile				();
	HX_RESULT       FindInCache			(ULONG32 type,
							ULONG32 ID,  
							XResCacheEntry**  ppEntry);
	HX_RESULT       KillCache			(void);
	HX_RESULT       FindResourceData		(void);
	HX_RESULT       TrimCachedData			(ULONG32 needed);
	HX_RESULT       CacheResourceEntries		(void);
	HX_RESULT       ReadResourceHeader		(void);
	HX_RESULT       ReadInAllResources		(void);
	HX_RESULT       GetResourceEntry		(HX_IMAGE_RESOURCE_DIRECTORY_ENTRY& h);
	HX_RESULT       GetResourceDirEntry		(HX_IMAGE_RESOURCE_DIRECTORY& h);
	BYTE*		GetResInfo			(BYTE* pData, 
							UINT16& ulResInfoLen,
							UINT16& uResInfoType,
							CHXString& key);
	UINT32		GetCodePage			(void);
	IUnknown*				m_pContext;
	IHXCommonClassFactory*			m_pCommonClassFactory;
	ULONG32                                 mResourceDataPosition;          // Start of the Resource data in the file.
	ULONG32                                 mResSectionVirtualAddress;  // Virtual Address of the resource section.
	HX_IMAGE_RESOURCE_DIRECTORY             mResourceHeader;                        // Resource Header.
	ULONG32                                 mLanguageId;                        // Language ID of resources to load.
	ULONG32                                 mMaxCachedData;                         // Total number of bytes allowed to be cached.
	LONG32                                  m_lRefCount;                            // RefCount
	CHXString                               mFilePath;                                      // Path to the file being used.
	BOOL                                    mFileOpen;                                      // Is the file we are using open?
	LISTPOSITION				mCachePos;		    // used in GetFirst/GetNext resource methods
	CHXSimpleList*  mCacheList;     // Used to cache the resources as they are loaded.
	CHXSimpleList*  mLoadedCache; // Items which are loaded into memory.
	static const char* const		zm_pName;
	static const char* const		zm_pDescription;
	static const char* const		zm_pCopyright;
	static const char* const		zm_pMoreInfoURL;
	UINT32					m_nCodePage;
	INT16					m_nResFileRef;
};
class   CHXXResource: public IHXXResource
{
public:
	CHXXResource				(void* data,
						ULONG32 datalength, 
						ULONG32 ID, 
						ULONG32 Type, 
						ULONG32 Language, 
						IHXXResFile*  file);
	~CHXXResource				();
	
	STDMETHOD(QueryInterface)		(THIS_ REFIID riid, void **ppvObj);
	STDMETHOD_(ULONG32, AddRef)		(THIS);
	STDMETHOD_(ULONG32, Release)		(THIS);
	//
	//      Functions for determining information from a loaded resource.
	//
	
	STDMETHOD_(ULONG32,ID)                  (THIS);
	STDMETHOD_(ULONG32,Type)                (THIS); 
	STDMETHOD_(ULONG32,Length)              (THIS);
	STDMETHOD_(ULONG32,Language)		(THIS);
	STDMETHOD_(IHXXResFile*,ResFile)	(THIS);
	
	//
	//      Data accessors
	//
	STDMETHOD_(void*,ResourceData)		(THIS);
private:
	LONG32                  m_lRefCount;
	IHXXResFile*           mResFile;
	void*                   mResData;
	
	ULONG32                 mID;
	ULONG32                 mType;
	ULONG32                 mLength;
	ULONG32			mLanguage;
	
};
#endif // _clntxres_h

						