88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
/**
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/**
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* @file filesystem.h
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* @brief Simulate local file system operations.
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* @Note The initial implementation does actually use standard C++
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* file operations but eventually, there will be another
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* layer that caches and manages file meta data too.
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*
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* $LicenseInfo:firstyear=2002&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_FILESYSTEM_H
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#define LL_FILESYSTEM_H
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#include "lluuid.h"
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#include "llassettype.h"
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#include "lldiskcache.h"
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class LLFileSystem
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{
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public:
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LLFileSystem(const LLUUID &file_id, const LLAssetType::EType file_type, S32 mode = LLFileSystem::READ);
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~LLFileSystem();
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BOOL read(U8 *buffer, S32 bytes, BOOL async = FALSE, F32 priority = 128.f); /* Flawfinder: ignore */
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BOOL isReadComplete();
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S32 getLastBytesRead();
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BOOL eof();
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BOOL write(const U8 *buffer, S32 bytes);
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BOOL seek(S32 offset, S32 origin = -1);
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S32 tell() const;
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S32 getSize();
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S32 getMaxSize();
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BOOL rename(const LLUUID &new_id, const LLAssetType::EType new_type);
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BOOL remove();
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static bool getExists(const LLUUID &file_id, const LLAssetType::EType file_type);
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static bool removeFile(const LLUUID &file_id, const LLAssetType::EType file_type);
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static bool renameFile(const LLUUID &old_file_id, const LLAssetType::EType old_file_type,
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const LLUUID &new_file_id, const LLAssetType::EType new_file_type);
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static S32 getFileSize(const LLUUID &file_id, const LLAssetType::EType file_type);
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static void initClass();
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static void cleanupClass();
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public:
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static const S32 READ;
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static const S32 WRITE;
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static const S32 READ_WRITE;
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static const S32 APPEND;
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protected:
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LLAssetType::EType mFileType;
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BOOL mReadComplete;
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LLUUID mFileID;
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S32 mPosition;
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S32 mMode;
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S32 mBytesRead;
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private:
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static const std::string idToFilepath(const std::string id, LLAssetType::EType at);
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static std::string mCacheDirName;
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static LLDiskCache* mDiskCache;
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};
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#endif // LL_FILESYSTEM_H
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